26th week of 2021 patent applcation highlights part 60 |
Patent application number | Title | Published |
20210201735 | DATA DRIVING CIRCUIT, DRIVING CHIP AND DISPLAY DEVICE - Provided is a data driving circuit, including: a pixel current generation circuit including an input terminal and an output terminal and configured to generate a pixel current based on a data voltage inputted via the input terminal, wherein the output terminal of the pixel current generation circuit is configured to be connected to a pixel circuit; and a first operational amplifier including a first input terminal connected to the output terminal of the pixel current generation circuit, a second input terminal, and an output terminal. A first voltage is inputted via the second input terminal of the first operational amplifier and is positively related to the data voltage, and the output terminal of the first operational amplifier is configured to be connected to the pixel circuit; and wherein the first operational amplifier is configured to generate a bias current based on the first voltage. | 2021-07-01 |
20210201736 | Display Device - The present disclosure relates to display devices, and more specifically, to a display device with a sensor circuit capable of sensing the presence or absence of an abnormality in a signal line located in a bending area. Through these, a display device is provided that enables an accurate check to be performed for the presence or absence of an abnormality, such as a crack, or the like in signal lines located in the bending area, and thus, has a normal bending structure without defects. | 2021-07-01 |
20210201737 | Display Apparatus - A display apparatus is disclosed, which comprises a display panel including pixels formed in a pixel area defined by intersection between gate lines and data lines, a data driver sequentially outing data signals per sub horizontal period in one horizontal period and outputting a selection signal including a transistor on period corresponding to the sub horizontal period, and a distributor comprised of transistors connected to each of the data lines and switched in accordance with the selection signal to output the data signals sequentially output from each of a plurality of source channels to the connected data lines, wherein the transistor on period in the selection signal is different from the sub horizontal period. | 2021-07-01 |
20210201738 | Display Device and Method of Driving the Same - The present disclosure relates to a display device and a method of driving the same, and more specifically, to a display device for preventing a user from recognizing a change in luminance when a frame frequency is changed, and a method of driving the same. A display device of the present disclosure includes a display panel including a plurality of pixel regions, a gate driver configured to sequentially supply light emission control signals to horizontal lines of the display panel, a data driver configured to supply a data signal corrected by a source voltage to the display panel, and a dimming controller configured to control whether to gradually change a frame frequency and gamma correction data according to a duty ratio of the light emission control signal. | 2021-07-01 |
20210201739 | LOW POWER DRIVING SYSTEM AND TIMING CONTROLLER FOR DISPLAY DEVICE - Disclosed are a low power driving system and timing controller for a display device. The low power driving system for a display device may include a timing controller configured to transmit a packet to which one of first option information corresponding to a static pattern or second option information corresponding to a dynamic pattern is applied, and a source driver configured to receive the packet and to perform a low power mode corresponding to the static pattern based on the first option information or adaptive charge sharing corresponding to the dynamic pattern based on the second option information. | 2021-07-01 |
20210201740 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Provided are a display device and a driving method thereof. The display device includes a display panel including a plurality of pixels defined by allowing a plurality of gate lines and a plurality of data lines to intersect each other; a timing controller generating a gate control signal, a data control signal, a MUX clock signal, and image data; a gate driving circuit sequentially providing gate signals to the plurality of gate lines based on the gate control signal; a data driving circuit supplying a data signal to the plurality of data lines based on the image data and the data control signal to drive the pixels; and a MUX circuit receiving the data signal and outputting the data signal in a time division manner to the data lines according to the MUX clock signal. The timing controller includes a slew rate control unit controlling a slew rate of the MUX clock signal. | 2021-07-01 |
20210201741 | DISPLAY DEVICE AND MULTIPLEXER CIRCUIT THEREOF - A multiplexer circuit includes a first switch unit and a second switch unit. The first switch unit is electrically connected to a first data line and a first pixel circuit, and configured to turn on according to a first signal in a first time duration. The second switch unit is electrically connected to the first data line and a second pixel circuit, and configured to turn on according to a second signal in a second time duration. The first time duration and the second time duration substantially start or end at a same time, so that the first time duration and the second time duration have overlap. | 2021-07-01 |
20210201742 | ELECTRONIC DEVICE AND METHOD OF BURN-IN PREVENTION FOR ELECTRONIC DEVICE - An electronic device is provided. The electronic device includes: a display panel and a host. The host is electrically connected to the display panel, and includes a processing unit and a graphics processing unit. The processing unit executes a driver program of the graphics processing unit and a specific program to render a display image of the specific program, wherein the display image includes a user interface. The processing unit obtains position information about a static area of the user interface. In response to the processing unit obtaining the position information about the static area of the user interface, the graphics processing unit performs a burn-in-prevention process on the static area via the driver program to generate an output image, and transmits the output image to the display panel for displaying. | 2021-07-01 |
20210201743 | DISPLAY DEVICE AND RENDERING METHOD THEREOF - The present disclosure relates to a display device and a rendering method thereof which can reduce pattern artifacts by controlling padding data using data of a plurality of pixels neighboring a boundary, and a rendering method of a display device according to an embodiment determines smaller data or luminance values for respective colors between first and second pixel data neighboring a boundary as padding data and renders the padding data and any one of the first and second pixel data immediately neighboring the boundary for the respective colors. | 2021-07-01 |
20210201744 | MURA COMPENSATION CIRCUIT AND DRIVING APPARATUS FOR DISPLAY APPLYING THE SAME - Provided are a mura compensation circuit which prevents a change in color of a pixel upon mura compensations for the pixel and a driving apparatus for a display applying the same. The mura compensation circuit includes a mura memory configured to store mura information including location information of a pixel having mura and compensation values for colors thereof, a gain adjustment unit configured to provide adjustment compensation values generated by applying an adjustment gain having an identical ratio to the compensation values for the colors of the pixel, and a mura compensation unit configured to receive display data of the colors of the pixel and to perform mura compensations on the display data of the colors of the pixel using the adjustment compensation values corresponding to the location information. | 2021-07-01 |
20210201745 | MURA COMPENSATION CIRCUIT AND DRIVING APPARATUS FOR DISPLAY APPLYING THE SAME - Provided are a mura compensation circuit and a driving apparatus for a display applying the same. The mura compensation circuit includes a data remapping unit configured to remap display data of a pixel having mura so that an original gray scale range of the display data has a changed gray scale range and to provide the display data having the gray scale range in which the highest gray scale of the original gray scale range is lowered to a first gray scale of the gray scale range and the lowest gray scale of the original gray scale range is raised to a second gray scale by the remapping, and a mura compensation unit configured to perform mura compensations on the display data having the changed gray scale range and to provide the display data on which the mura compensations have been performed. | 2021-07-01 |
20210201746 | DISPLAY DEVICE, METHOD OF RECEIVING IMAGE DATA AND COMMAND DATA, AND METHOD OF TRANSFERRING IMAGE DATA AND COMMAND DATA - A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded. | 2021-07-01 |
20210201747 | TEXT BOUNDARY PROCESSING METHOD, DISPLAY PANEL, AND COMPUTER-READABLE STORAGE MEDIUM - Disclosed are a text boundary processing method, a display panel and a computer-readable storage medium. The method includes: acquiring a grayscale value of each sub-pixel in a display panel; determining a current sub-pixel is a text boundary according to a grayscale value of the current sub-pixel and grayscale values of sub-pixels adjacent to the current sub-pixel; and interchanging grayscale values of a red sub-pixel and a blue sub-pixel in a sub-pixel group where the current sub-pixel is located, where, the sub-pixel group consists of the current sub-pixel and two sub-pixels adjacent to the current sub-pixel in a same row where the current sub-pixel is located. | 2021-07-01 |
20210201748 | SHIFT REGISTER, DRIVING METHOD THEREOF, GATE DRIVING CIRCUIT, AND DISPLAY DEVICE - A shift register, a driving method thereof, a gate driving circuit, and a display device. The shift register includes an input sub-circuit, a reset sub-circuit, a node control sub-circuit, a potential maintenance sub-circuit, a first output sub-circuit, and a second output sub-circuit. | 2021-07-01 |
20210201749 | DISPLAY SUBSTRATE, METHOD FOR DRIVING THE SAME AND DISPLAY PANEL - The present disclosure relates to a display substrate, a method for driving the same, and a display panel. The display substrate includes a base substrate as well as gate lines, data lines and a gate driver on the base substrate, the gate line being connected to the gate driver, and electrostatic rings and control components corresponding to at least one gate line are further disposed on the base substrate, each of the gate lines being connected to the electrostatic ring by a corresponding control component. The electrostatic ring is configured to load a control voltage to turn on the corresponding control component after the display panel is turned off, and the corresponding control component is configured to be turned on to change a voltage on the gate line into a turn-on voltage after the display panel is turned off. | 2021-07-01 |
20210201750 | DRIVING CIRCUIT FOR DISPLAY PANEL AND METHOD OF DRIVING SAME - A driving circuit for a display panel and a method of driving the same are provided. The driving circuit includes that, when the time control chip is at an initialized state, the enabling control module controls the logic control module to turn off; and when the time control chip is at a state after the initialized state is finished the enable control module controls the logic control module to turn on to receive the modulating data provided by the time control chip. | 2021-07-01 |
20210201751 | SHIFT REGISTER UNIT AND DRIVING METHOD, GATE DRIVING CIRCUIT, AND DISPLAY DEVICE - A shift register unit, a gate driving circuit, a display device, and a driving method are provided. The shift register unit includes an input circuit, a first control circuit, a blanking control circuit, a first output circuit, and a second output circuit. The input circuit is configured to control a level of a first node in response to an input signal input; the first control circuit is configured to control a level of the second node in response to the input signal and the level of the first node; the blanking control circuit is configured to control the level of the first node and the level of the second node; the first output circuit is configured to output a first output signal at the first output terminal; and the second output circuit is configured to output a second output signal at the second output terminal. | 2021-07-01 |
20210201752 | SHIFT REGISTER UNIT, GATE DRIVE CIRCUIT, DISPLAY PANEL, DISPLAY DEVICE AND DRIVING METHOD - A shift register unit, a gate drive circuit, a display panel, a display device and a driving method. The shift register unit includes a first input circuit, a second input circuit, a first output circuit, a second output circuit, a first reset circuit and a second reset circuit. The first input circuit is configured to control a level of a first node in response to a first input signal. The second input circuit is configured to control the level of the first node in response to a second input signal. The first output circuit is configured to output a first clock signal to a first output terminal under a control of the level of the first node. The second output circuit is configured to output a second clock signal to a second output terminal under the control of the level of the first node. | 2021-07-01 |
20210201753 | SHIFT REGISTER UNIT AND METHOD FOR DRIVING SHIFT REGISTER UNIT, GATE DRIVE CIRCUIT, AND DISPLAY DEVICE - A shift register unit, a method for driving a shift register unit, a gate drive circuit, and a display device are disclosed. A shift register unit includes an input circuit, an output circuit, and a first control circuit. The input circuit controls a level of a first node in response to an input signal. The output circuit outputs at least one clock signal of at least one clock signal terminal to at least one signal output terminal under the control of the level of the first node, and outputs a level of a second node to at least one of the at least one signal output terminal in the case where the first node is at a non-operating potential. The first control circuit controls the level of the second node in response to the level of the first node. | 2021-07-01 |
20210201754 | FOLDABLE DISPLAY DEVICE - A foldable display device includes a display panel. The display panel includes a plurality of display areas divided by at least one or more folding lines. A plurality of data integrated circuits is configured to output a data voltage to the plurality of display areas. Each of the plurality of data integrated circuits includes at least one or more gamma voltage generators that are configured to output a plurality of gamma voltages. The at least one or more gamma voltage generators are connected by an external gamma line, so that boundaries between the display areas may be minimized or reduced. | 2021-07-01 |
20210201755 | Display Device - The embodiments relate to a display device including: a display panel on which multiple pixels are arranged; a first driver IC controlling driving of the pixels arranged in a first area of the display panel, and including a first gamma generator outputting multiple first gamma voltages; and a second driver IC controlling driving of the pixels arranged in a second area of the display panel, and including a second gamma generator outputting multiple second gamma voltages, wherein the first gamma generator and the second gamma generator generate the first gamma voltages and the second gamma voltages, respectively, by using multiple gamma reference voltages output from the first gamma generator. | 2021-07-01 |
20210201756 | DISPLAY DRIVING APPARATUS - A display driving apparatus includes an output control circuit configured to, with one frame being divided into a plurality of blank periods by touch driving, output source signals corresponding to display data during the plurality of blank periods; and a polarity control circuit configured to receive pre-polarity control information for polarity inversion, and control polarities of the source signals outputted from the output control circuit, for polarity inversion by the unit of vertical 2 dots for one frame, wherein polarities for pre dummy lines and active data lines of odd-numbered and even-numbered blank periods are controlled by the pre-polarity control information. | 2021-07-01 |
20210201757 | Display Device - A display device according to an embodiment of the present disclosure includes a display panel configured to display an image using a plurality of pixels, a timing controller configured to generate an embedded clock point-to-point interface (EPI) data signal according to an EPI protocol, a display panel driver configured to write pixel data of an input image onto the plurality of pixels based on the EPI data signal, a wireless signal detection unit configured to detect an electromagnetic wave signal surrounding the display device and convert the detected electromagnetic wave signal into an electric signal, and a detection signal output unit configured to compare the electric signal with a reference signal and output a detection signal according to a comparison result, wherein the timing controller converts a preset signal characteristic of the EPI data signal according to the detection signal and outputs the EPI data signal. | 2021-07-01 |
20210201758 | OPTICAL COMPENSATION SYSTEM AND OPTICAL COMPENSATION METHOD OF DISPLAY DEVICE - Provided is an optical compensation method for a display device including a pixel coupled between first power and second power sources. In the optical compensation method, the first voltage level of the second power source corresponding to a first luminance level is set while measuring the luminance of the display device, the second voltage level of the second power source corresponding to a second luminance level is set while measuring the luminance of the display device, the third voltage levels of the second power source for representative luminance levels including the first and second luminance levels are set based on the first and second voltage levels, and the fourth voltage levels of the second power source for the representative luminance levels according to temperature conditions are set based on the third voltage levels and temperature offsets according to the temperature conditions, under which the display device is driven. | 2021-07-01 |
20210201759 | ELECTROLUMINESCENT DISPLAY DEVICE - An electroluminescent display device has a plurality of pixels and each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, an internal compensator comprising a first capacitor connected between the first node and a second node, and a second capacitor connected between the second node and an input terminal for the high-level source voltage, the internal compensator controlling a threshold voltage of the driving transistor with reference to a first scan signal, a second scan signal opposite to the first scan signal in phase, a third scan signal lagging the first scan signal in phase, a fourth scan signal leading the first scan signal in phase, and an emission signal, and a light emitting element connected between a fifth node to be connected to the fourth node and an input terminal for a low-level source voltage. | 2021-07-01 |
20210201760 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF, DISPLAY PANEL AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE - A driving method of a pixel circuit, a driving method of a display panel, a pixel circuit, a display panel, and a display device. In the display period, the driving method of the pixel circuit includes: driving, by the current control circuit and the time control circuit according to the display data signal and the light-emitting control signal received by the current control circuit and the time data signal received by the time control circuit, a light-emitting element to emit light in the plurality of consecutive light-emitting phases; and causing the time control circuit to be turned off in the time control turn-off phase according to a time control turn-off data signal received by the time control circuit. | 2021-07-01 |
20210201761 | Pixel Circuit and Driving Method Thereof, and Display Device - The present disclosure provides a pixel circuit and a driving method thereof, and a display device. The pixel circuit includes: a light emitting element including an anode and a cathode electrically connected to a first voltage terminal; a control circuit; a first switching circuit configured to transmit a voltage from a data line; a driving circuit including: a first transistor, of which a control terminal, a first terminal and a second terminal are electrically connected to the first switching circuit, a second voltage terminal, and the control circuit respectively, and a capacitor, of which a first terminal and a second terminal are electrically connected to the second voltage terminal and the first switching circuit respectively; and a second switching circuit configured to be in a conductive state to stabilize a potential of the data line at a first fixed level or a second fixed level. | 2021-07-01 |
20210201762 | DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - Provided is a display device including: a display panel; and a driving chip. The display panel includes: sub-pixels including first sub-pixels and second sub-pixels located, each first sub-pixel including a first pixel circuit and a first light-emitting element, and each second sub-pixel including a second light-emitting element. The driving chip includes: a data signal output module electrically connected to the first pixel circuit and configured to output a first data signal to the first pixel circuit, so that the first pixel circuit outputs, in response to the first data signal, a first driving current signal for driving the first light-emitting element to emit light; and a driving current signal output module electrically connected to the second light-emitting element and configured to output a second driving current signal to the second light-emitting element, so that the second light-emitting element emits light in response to the second driving current signal. | 2021-07-01 |
20210201763 | METHOD FOR ACTUATING DISPLAY DEVICE - A display device that inhibits display deterioration is provided. The display device estimates the amount of deterioration of a pixel included in the display device and corrects a first image signal supplied to the pixel. The display device includes a display panel including a plurality of pixels, a frame memory, and an arithmetic portion. The pixels each include a light-emitting element and a transistor supplying a current to the light-emitting element. The arithmetic portion has a function of performing an arithmetic operation in accordance with a regression model. A forecast error parameter and an output parameter are set in the arithmetic portion. The arithmetic portion updates the forecast error parameter from a first observation signal supplied from the frame memory and a second observation signal supplied from the pixel, in accordance with the regression model, and updates an output parameter by the forecast error parameter in accordance with the regression model. The arithmetic portion corrects the first image signal by the output parameter and generates a second image signal, and the light-emitting element emits light by the second image signal supplied to the transistor included in the pixel. | 2021-07-01 |
20210201764 | DISPLAY DEVICE - A display device may include: pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a first scan signal to the first scan lines in a first period and a second period; a second scan driver to supply a second scan signal to the second scan lines in the first period without supplying the second scan signal to the second scan lines in the second period; an emission driver to supply an emission control signal to the emission control lines in the first period and the second period; a data driver configured to supply data signals to the data lines in the first period without supplying the second scan signal to the second scan lines in the second period; and a power supply to supply a first initialization power source to the pixels through a first initialization and to supply a second initialization power source to the pixels through a second power line. | 2021-07-01 |
20210201765 | Drive Unit for Display Device - The present disclosure relates to a driver for a display device. A driver for a display device according to an embodiment is characterized in generating a voltage supplied as a bias voltage of a source buffer of a data driver in conjunction with a voltage supplied to a display panel. Therefore, the driver for the display device according to the present disclosure has an advantage that the headroom margin of the source buffer can be secured and power consumption of the driver is low at the same time, even when an image data pattern causing a variation in the voltage is input to the display device. | 2021-07-01 |
20210201766 | Pixel Circuit, Light Emitting Display Device, and Driving Method Thereof - A light emitting display device includes a pixel circuit including: a first transistor having a first electrode connected to a first node coupled to a first power supply line, a second electrode connected to a second node, and a gate electrode connected to a third node; a second transistor having a first electrode connected to the first node, a second electrode connected to the third node, and a gate electrode connected to a first gate line; a light emitting diode connected to the first transistor; a first capacitor having a first electrode connected to the third node and a second electrode connected to a conductive line and an anode electrode of the light emitting diode; and a second capacitor having a first electrode connected to the third node and a second electrode connected to a constant voltage source which supplies a DC voltage. | 2021-07-01 |
20210201767 | GATE DRIVING CIRCUIT AND LIGHT EMITTING DISPLAY APPARATUS COMPRISING THE SAME - A gate driving circuit and a light emitting display apparatus comprising the same are discussed, in which a charging characteristic of a control node is improved. The gate driving circuit comprises first to mth stage circuits, wherein each of the first to mth stage circuits includes first to third control nodes, a node control circuit controlling a voltage of each of the first to third control nodes, and an output buffer circuit outputting each of a scan signal, a sense signal and a carry signal in accordance with each of the first to third control nodes, the node control circuit including a node setup circuit charging a first gate high potential voltage in the first control node in response to a first carry signal supplied from a front stage circuit. | 2021-07-01 |
20210201768 | SHIFT REGISTER CIRCUIT AND LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SHIFT REGISTER CIRCUIT - A shift register circuit comprises a shift register, and a signal output circuit including J number of scan signal output circuits (J is an integer of 2 or more) operating by being connected with the shift register to respectively output J number of scan signals. The J number of scan signal output circuits share a first QB node and a second QB node of the shift register, a common output terminal of the shift register, and a first voltage line, operate based on a potential of the first QB node, a potential of the second QB node, a common output signal output through the common output terminal, a first voltage transferred through the first voltage line, and an Ith clock signal transferred through an Ith clock signal line, and output the J number of scan signals through output terminals which are respectively divided. | 2021-07-01 |
20210201769 | MACRO-PIXEL DISPLAY BACKPLANE - A micro-light emitting diode (micro-LED) display backplane includes a plurality of macro-pixels. Each macro-pixel includes: a contiguous two-dimensional (2-D) array of bitcells storing display data bits for driving a set of micro-LEDs of a 2-D array of micro-LEDs; and drive circuits configured to generate, based on the display data bits stored in the contiguous 2-D array of bitcells, pulse-width modulated (PWM) drive signals for driving the set of micro-LEDs of the 2-D array of micro-LEDs. In one example, the plurality of macro-pixels is grouped into a plurality of sub-arrays, where each sub-array of the plurality of sub-arrays includes a set of macro-pixels and a local periphery circuit next to the set of macro-pixels. The local periphery circuit includes, for example, a buffer, a repeater, a clock gating circuit for gating an input clock signal to the sub-array, and/or a sub-array decoder for selecting the sub-array. | 2021-07-01 |
20210201770 | GATE DRIVING CIRCUIT AND DISPLAY APPARATUS COMPRISING THE SAME - A gate driving circuit and a display apparatus comprising the same are disclosed, in which a maximum voltage level of a plurality of scan signals output from one stage circuit can be prevented from being deteriorated. The gate driving circuit comprises first to mth stage circuits, wherein each of the first to mth stage circuits includes a logic circuit portion controlling a voltage of each of a first control node and a second control node, a node boosting circuit boosting the voltage of each of the control nodes in accordance with boosting shift clock signals, a scan output circuit outputting each of first to ith scan shift clock signals as first to ith scan signals (i is a natural number of 3 or more) in response to the boosting voltage of the first control node, and a carry output circuit outputting carry shift clock signals as carry signals in response to the boosting voltage of the first control node. | 2021-07-01 |
20210201771 | BACKPLANE ADAPTABLE TO DRIVE EMISSIVE PIXEL ARRAYS OF DIFFERING PITCHES - A backplane suitable to pulse width modulate an array of emissive pixels with a current that is substantially constant over a wide range of temperatures. A current control circuit provides means to provide a constant current to an array of current mirror pixel drive elements. The current control circuit comprises a thermally stable bias resistor and a thermally stable band-gap voltage source to provide thermally stable controls and a large L p-channel reference current FET with an associated large L n-channel bias FET configured to provide a reference current at a required voltage to the gate of a large L p-channel current source FET. The current control circuit and the current mirror pixel drive elements are similar circuits with one current control circuit able to control a substantial number of pixel drive elements. | 2021-07-01 |
20210201772 | DEVICE AND METHOD FOR IMPROVED LED DRIVING - An electronic device comprises a display and a controller. The controller is configured to provide a first frequency refresh rate to the display. The controller is also configured to generate a control signal configured to control emission of a light emitting diode of a display pixel of the display at a second frequency based on whether the first frequency refresh rate of the display is less than a predetermined threshold value. | 2021-07-01 |
20210201773 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF, DISPLAY DEVICE - The present disclosure provides a pixel circuit including: a reset circuit, a threshold compensation circuit, a data writing circuit, a light emitting control circuit and a driving transistor, where the reset circuit, the threshold compensation circuit, the data writing circuit and a control electrode of the driving transistor are coupled to a control node; the reset circuit is configured to write a reset voltage to the control node; the threshold compensation circuit is configured to perform threshold compensation on the driving transistor; the data writing circuit is configured to charge the control node according to a data voltage; the light emitting control circuit is configured to control a second electrode of the driving transistor to be electrically coupled to or decoupled from a first electrode of the light emitting element; the driving transistor is configured to output a corresponding driving current according to a voltage at the control node. | 2021-07-01 |
20210201774 | SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT, DISPLAY DEVICE AND DRIVING METHOD - A shift register unit, a gate driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first sub-circuit, a second sub-circuit, and a leakage prevention circuit. The first sub-circuit comprises a first input circuit and a first output circuit, the first input circuit is configured to control a level of a first node in response to a first input signal. The second sub-circuit comprises a second input circuit and the second output circuit. The leakage prevention circuit is connected to the first node, and is configured to control a level of the leakage prevention node under control of the level of the first node, so that a circuit connected between the first node and the leakage prevention node is turned off, and a circuit connected between the second node and the leakage prevention node is turned off. | 2021-07-01 |
20210201775 | DISPLAY DEVICE AND COMPENSATION METHOD - The present disclosure relates to a display device and a compensation method and more particularly to a method for sensing mobility of a driving TFT of subpixels while an image is being driven by a display device, and a display device performing the method. A sensing method for compensation, which is performed while a display device is being driven, includes charging, in an N | 2021-07-01 |
20210201776 | OLED PIXEL CIRCUIT, AND DRIVING METHOD THEREOF, AND A DISPLAY APPARATUS - The present application discloses a pixel circuit, including a data-input sub-circuit configured to apply a data voltage from the data line to a first node; a reset sub-circuit configured to reset the second node; a driving-control sub-circuit coupled to a first power supply, the first node, and the second node; a power-storage sub-circuit configured to regulate a voltage difference between the first node and the second node; a light-emitting device coupled to the second node and a second power supply; and a sampling sub-circuit coupled to the data line and the second node and being configured to control the data line to connect with the second node for collecting a voltage signal containing information about electrical properties of the driving-control sub-circuit and being used to generating a compensation voltage for compensating any drifts of the electrical properties. | 2021-07-01 |
20210201777 | METHOD, APPARATUS, AND SYSTEM OF COMPENSATING AN OLED IN A DISPLAY PANEL FOR EFFICIENCY DECAY - A method, an apparatus, and a system of compensating an organic light emitting diode (OLED) in a display panel for efficiency decay are disclosed. The method includes acquiring an IV curve of the OLED device according to a drain voltage with grayscales applied to a driven thin-film transistor (TFT) and an output current; comparing the IV curve with an IV curve database model, and determining a target curve and a first match curve; determining a second match curve according to a measuring moment; acquiring a target voltage corresponding to a target luminance; acquiring a target current corresponding to the target voltage; and acquiring, based on a characteristic curve of the driven TFT, a compensated gate voltage through the target voltage, the target current, and the drain voltage. The OLED device can be compensated for efficiency decay. Display effects are improved, causing the display panel to display uniformly. | 2021-07-01 |
20210201778 | PIXEL CIRCUIT FOR CONTROLLING LIGHT-EMITTING ELEMENT - A pixel circuit for controlling driving current for a light-emitting element is disclosed. The pixel circuit includes a driving transistor configured to supply driving current to the light-emitting element, a first switching transistor configured to transmit a data signal corresponding to the driving current, a storage capacitor configured to receive the signal from the first switching transistor and store a voltage to be applied to a gate of the driving transistor, a second switching transistor configured to correct the voltage to be stored to the storage capacitor, and a first capacitor including an electrode connected with a drain of the driving transistor and an electrode to be supplied with a predetermined potential. | 2021-07-01 |
20210201779 | COMPENSATION METHOD OF DISPLAY DEVICE - A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value. | 2021-07-01 |
20210201780 | DISPLAY PANEL INCLUDING SHORT CIRCUIT PROTECTION CIRCUIT - The present disclosure provides a display panel. The display panel includes a short circuit protection circuit, a pixel driving circuit, and an organic light-emitting element. The short circuit protection circuit includes a detection circuit electrically connected to the organic light-emitting element, and a control circuit electrically connected to the detection circuit and the pixel driving circuit. The detection circuit is configured to detect whether the organic light-emitting element is short-circuited. The control circuit is configured to control, in response to a detection result of the detection circuit, whether the pixel driving circuit performs driving. In the present disclosure, the display panel includes a plurality of pixel units arranged in rows and columns. This prevents the pixel driving circuit from burning the organic light-emitting element that is short-circuited or other adjacent organic light-emitting element. | 2021-07-01 |
20210201781 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a net power control circuit configured to analyze a screen load from an input image signal to generate a load signal including a load value corresponding to the screen load; and an overcurrent protection circuit configured to set a set current value at a predetermined ratio with respect to a global current value corresponding to the load value included in the load signal, and to determine whether or not the display device is powered off based on the set current value. | 2021-07-01 |
20210201782 | ELECTROLUMINESCENT DISPLAY DEVICE - An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator controlling voltages of the first to fourth nodes in accordance with operations of a plurality of switching transistors in an initialization period, a data writing period and an emission period, and a refresh transistor configured to apply the high-level source voltage to the second node in accordance with a scan signal in a refresh period preceding an initialization period. | 2021-07-01 |
20210201783 | Organic Light Emitting Diode Display Device and Method of Driving the Same - An organic light emitting diode display device includes: a display panel including a plurality of pixel regions; and a reference voltage compensating part, wherein the reference voltage compensating part: supplies a first reference voltage to the plurality of pixel regions during an active section where a data enable signal is activated, and supplies a second reference voltage higher than the first reference voltage to the plurality of pixel regions during a blank section where the data enable signal is deactivated. | 2021-07-01 |
20210201784 | LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A light emitting display device includes a display panel, a power supply configured to supply a first potential voltage and a second potential voltage to the display panel, and a switch circuit unit configured to sense the first potential voltage applied to the display panel and to feedback the first potential voltage to the power supply, wherein the power supply compensates for the first potential voltage based on the first potential voltage fed back from the switch circuit unit and to output the compensated first potential voltage. | 2021-07-01 |
20210201785 | DISPLAY DEVICE - Provided are a display device. The display device comprises: a display unit defined by a display area and a non-display area located outside the display area, and including pixels arranged in the display area, first sensing wirings electrically connected to the pixels, and auxiliary voltage wirings electrically separated from the pixels; and a sensing unit electrically connected to the first sensing wirings, wherein the first sensing wirings and the auxiliary voltage wirings extend in a first direction and are sequentially arranged along a second direction perpendicular to the first direction at first intervals, the first sensing wirings are spaced apart from each other along the second direction at second intervals greater than the first intervals and are electrically separated from each other, and the auxiliary voltage wirings are electrically connected to each other. | 2021-07-01 |
20210201786 | DISPLAY PANEL AND DRIVING METHOD - A display panel and a driving method are provided. The pixel driver circuit includes a drive transistor, at least two data write modules, and a light emission control module. The at least two data write modules are configured to provide data signals for the drive transistor in a time-sharing manner, and the light emission control module is connected in series respectively with the drive transistor and the light-emitting element and is configured to control whether a drive current flows through the light-emitting element. | 2021-07-01 |
20210201787 | DISPLAY PANEL, DRIVING METHOD THEREOF, AND DISPLAY DEVICE - A display panel, a display device, and a driving method of the display panel are provided. The display panel includes a plurality of pixel units arranged in an array and data lines and sensing lines connected to the pixel units, and each of the plurality of pixel units includes a plurality of sub-pixels; all sub-pixels in a same column of pixel units are connected to a same data line, each column of pixel units is respectively connected to two of the sensing lines, and any two adjacent columns of pixel units share one of the sensing line. | 2021-07-01 |
20210201788 | Pixel Driving Circuit, Display Device and Driving Method - A pixel driving circuit, a display device and a driving method are disclosed; the pixel driving circuit includes a control sub-circuit, a charging sub-circuit, a driving sub-circuit and a light-emitting sub-circuit the control sub-circuit is used to control the first thin film transistor to charge the charging sub-circuit, and the charging sub-circuit is used to provide a voltage to the driving sub-circuit to drive the light-emitting sub-circuit to emit light. | 2021-07-01 |
20210201789 | A DATA VOLTAGE COMPENSATION METHOD, A DISPLAY DRIVING METHOD, AND A DISPLAY APPARATUS - The present application discloses a method for compensating data voltages in a display apparatus. The method for individually compensating a data voltage to be applied to one of the multiple pixel circuits in the display apparatus. The method includes obtaining a threshold voltage of the driving transistor in the one of the multiple pixel circuits. Additionally, the method includes applying a testing voltage to a gate electrode of the driving transistor for charging the sense line up to a first time period to determine a first monitoring voltage associated with the sense line. The testing voltage is set to be a sum of the threshold voltage and a first setting voltage. Moreover, the method includes compensating a data voltage to be applied to the one of the multiple pixel circuits based on the first monitoring voltage and the threshold voltage. | 2021-07-01 |
20210201790 | PIXEL CIRUIT, ACTIVE MATRIX ORGANIC LIGHT EMITTING DIODE DISPLAY PANEL, DISPLAY APPARATUS, AND METHOD OF COMPENSATING THRESHOLD VOLTAGE OF DRIVING TRANSISTOR - The present application discloses a pixel circuit in an active matrix organic light-emitting diode (AMOLED) display panel. The pixel circuit includes a first transistor having a bottom gate and a top gate, a drain supplied with a high-level power-supply voltage, and a source coupled to a light-emitting diode (LED). The bottom gate is provided with a first voltage signal and the source is provided with a second voltage signal in a compensation period during which a present value of a threshold voltage of the first transistor is sensed at the source and a third voltage signal is determined based on the present value of the threshold voltage. The top gate is configured to be provided with the third voltage signal in an emission period to reduce the present value of the threshold voltage. | 2021-07-01 |
20210201791 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A display device and a method of manufacturing the display device are provided. The display device includes a first display layer disposed on a surface of a display substrate and including a display element, a power supply unit that supplies a power signal to the display element, and a signal controller that supplies an image signal to the display element. The display element includes a base member, a pixel disposed on a surface of the base member, a driving circuit that provides a pixel driving signal to the pixel, a first transreceiver that receives the power signal and transmits the power signal to the driving circuit, and a second transreceiver that receives the image signal and transmits the image signal to the driving circuit. | 2021-07-01 |
20210201792 | POWER MANAGEMENT DRIVER AND DISPLAY DEVICE HAVING THE SAME - A power management driver and a display device having the power management driver are provided, including a first power supply configured to supply a first voltage to a first driving power terminal of a pixel through a power line during a sensing period, and supply a second voltage to the first driving power terminal of the pixel through the power line during a display period; a controller configured to control timing at which the first voltage is output and timing at which the second voltage is output during a transition period between the display period and the sensing period in response to a sensing control signal; and a fault detector configured to detect a fault in the power line based on a current flowing through an output terminal during the sensing period. | 2021-07-01 |
20210201793 | LIGHT EMITTING DIODE DISPLAY AND DRIVING METHOD THEREOF FOR REDUCING BRIGHTNESS CHANGE DUE TO REFRESH RATE VARIATION - A driving method of LED display, configured to be applied to an LED display capable of varying a refresh rate thereof and able to reduce brightness changes due to refresh rate variation, is disclosed in the present disclosure. This driving method includes: controlling an organic light-emitting diode of the LED display by an emission signal having a plurality of frame periods, with each of the frame periods having a PWM part with a duty ratio; detecting whether a change in the refresh rate of the LED display exists; and performing a compensation procedure when the change is detected, with the compensation procedure compensating a brightness difference of the organic light-emitting diode occurring due to the change in the refresh rate by adjusting the duty ratio of the PWM part. Said LED display is also disclosed. | 2021-07-01 |
20210201794 | PIXEL DRIVING CIRCUIT AND DRIVING METHOD - Provided is a pixel driving circuit, including: a driving circuit configured to drive a light-emitting device to emit light; a first data writing circuit configured to write, under control of a control signal inputted to its control terminal, an initial voltage into a control terminal of the driving circuit; a second data writing circuit configured to store, under control of a control signal inputted to its control terminal, a voltage difference between an initial grayscale voltage and the initial voltage, and to couple, under control of the control signal, a display grayscale voltage with the voltage difference, so that a voltage of the control terminal of the driving circuit is coupled to a superposition of the display grayscale voltage and the voltage difference; and a storage circuit configured to store a driving voltage of the driving circuit. | 2021-07-01 |
20210201795 | DISPLAY DEVICE - A display device includes a substrate including a display area and a non-display area adjacent to the display area, a pixel disposed in the display area, a first voltage line disposed in the non-display area and supplying a first power supply voltage to the pixel, a second voltage line disposed in the non-display area and supplying a second power supply voltage to the pixel, the second voltage line being apart from the first voltage line, and a metallic pattern disposed between the first voltage line and the second voltage line. A shortest distance between the first voltage line and the second voltage line is greater than a width of the metallic pattern. | 2021-07-01 |
20210201796 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - The present disclosure provides an organic light emitting display device capable of sensing changes in characteristics due to a heat of an analogue-to-digital converting portion to convert sensing voltages corresponding to the threshold values into digital values with the threshold voltages when the threshold voltages of the driving transistors of an organic light emitting display panel are sensed in each horizontal line unit. | 2021-07-01 |
20210201797 | Organic Light Emitting Display Device and Driving Method Thereof - An organic light emitting display device and a driving method thereof are disclosed, wherein the organic light emitting display device comprises a display panel provided with pixels connected to a sensing line; and a sensing unit outputting a sensing voltage of the pixel, which is input through the sensing line, as sensing data in a first sensing mode performed during power-off and a second sensing mode performed in the middle of driving a display mode, wherein the display panel includes a first capacitor connected to the sensing line to store a sensing voltage of the first sensing mode and provide the sensing voltage to the sensing unit, and a second capacitor connected to the sensing line to store a sensing voltage of the second sensing mode and provide the sensing voltage to the sensing unit. | 2021-07-01 |
20210201798 | Organic Light Emitting Display Device and Driving Method Thereof - An organic light emitting display device includes a display panel including a plurality of pixels each including an organic light emitting diode, a gate driver configured to supply a gate driving signal to each of the pixels, a data driver configured to supply a data voltage to each of the pixels, a multiplexer being switched in response to an external control signal to output any one of the data voltage and a voltage supplied from a separate power supply line, and a timing controller configured to control the multiplexer to transfer the data voltage to a data line of each of the pixels in a refresh period in a low-speed driving mode and transfer the voltage from the separate power supply line to the data line of each of the pixels for at least one anode reset period in a hold period in the low-speed driving mode. | 2021-07-01 |
20210201799 | Gate Driver and Organic Light Emitting Display Device Including the Same - A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel. | 2021-07-01 |
20210201800 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed are a display device and a driving method thereof. A reference compensation voltage for compensating for a node voltage of each pixel for an image holding period after a refresh period for which image data is input in a low-speed driving mode is set. Then, the node voltage of each sub-pixel is compensated for using a corresponding reference compensation voltage on at least one frame basis at each start time and each end time of the image holding period, thereby preventing low image quality and reducing power consumption. | 2021-07-01 |
20210201801 | DISPLAY DEVICE - The embodiments relate to a display device that includes an input terminal through which a feedback voltage of a high-potential driving voltage is received from a display panel. An output terminal is included through which a high reference voltage and a low reference voltage generated on the basis of the feedback voltage are output. A flexible printed circuit board (FPCB) includes at least one capacitor connected between the input terminal and the output terminal. | 2021-07-01 |
20210201802 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device and a method of driving the same. The display device may include: a first pixel area including first pixels and first data lines coupled to the first pixels; a second pixel area including second pixels and second data lines coupled to the second pixels; a first non-pixel area disposed on one side of the first pixel area such that the first non-pixel area borders the first and second pixel areas; a data driver configured to output data signals corresponding to the first and second pixels through first and second output lines, respectively; and a switch unit including a first switch unit having a demux configured to alternately couple each of the first output lines to corresponding first data lines, and a second switch unit configured to couple the second output lines to the respective different second data lines. | 2021-07-01 |
20210201803 | SHIFT REGISTER CIRCUITRY, GATE DRIVING CIRCUIT, DISPLAY DEVICE, AND DRIVING METHOD THEREOF - Embodiments of the present disclosure provide a shift register circuitry, a gate driving circuit, a display device, and a driving method. The shift register circuitry includes a blanking input circuit, a display input circuit, an output circuit, and a first control circuit. The blanking input circuit provides a blanking input signal to the pull-up control node and supplies a blanking pull-up signal to the pull-up node. The display input circuit provides a display pull-up signal to the pull-up node in response to the display input signal. The output circuit outputs the output signal to the shift signal output terminal and the pixel signal output terminal under the control of the voltage of the pull-up node. The first control circuit couples the shift signal output terminal to the pixel signal output terminal in response to the display input signal. | 2021-07-01 |
20210201804 | ELECTRONIC PANEL, DISPLAY DEVICE, AND DRIVING METHOD - An electronic panel, a display device, and a driving method are disclosed. In the electronic panel, each sub-pixel unit includes a light emitting unit, a pixel driving circuit for driving the light emitting unit to emit light, and a sensing circuit for sensing the pixel driving circuit; the gate driving circuit includes N+1 output terminals, and is configured to output gate scanning signals that turn on the N rows of the plurality of sub-pixel units row by row; the pixel driving circuits of the sub-pixel units in a j-th row are connected to a j-th output terminal of the gate driving circuit to receive the gate scanning signal as a scanning driving signal, and the sensing circuits of the sub-pixel units in the j-th row are connected to a (j+1)-th output terminal of the gate driving circuit to receive the gate scanning signal as a sensing driving signal. | 2021-07-01 |
20210201805 | ELECTRONIC PANEL, DISPLAY DEVICE AND DRIVING METHOD - An electronic panel, a display device and a driving method are disclosed. In the electronic panel, each row of subpixel units is divided into a plurality of subpixel unit groups, and each subpixel unit group includes a first subpixel unit and a second subpixel unit. The first subpixel unit includes a first light emitter unit, a first pixel driving circuit for driving the first light emitter unit to emit light, and a first sensing circuit for sensing the first pixel driving circuit; the second subpixel unit includes a second light emitter unit, a second pixel driving circuit for driving the second light emitter unit to emit light, and a second sensing circuit for sensing the second pixel driving circuit. | 2021-07-01 |
20210201806 | SHIFT REGISTER UNIT AND DRIVING METHOD THEREOF, GATE DRIVING CIRCUIT, AND DISPLAY DEVICE - A shift register unit and a driving method thereof, a gate driving circuit, and a display device are provided. The shift register unit includes: a first input circuit, a second input circuit, an output circuit, and a compensation circuit, the first input circuit is configured to write a first input signal to the first node in response to a first control signal; the second input circuit is configured to input a second input signal to the second node in response to a detection control signal and configured to transmit a level of the second node to the first node in response to a second control signal; the compensation circuit is connected to the is configured to compensate the level of the second node; and the output circuit is configured to output a composite output signal to the output terminal under control of a level of the first node. | 2021-07-01 |
20210201807 | SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT, DISPLAY DEVICE AND DRIVING METHOD - A shift register unit, a gate driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first sub-unit and a leakage prevention circuit; the first sub-unit includes a first input circuit and a first output circuit. The first input circuit controls a level of a first node in response to a first input signal, the first output circuit provides an output signal at an output terminal under control of the level of the first node, the leakage prevention circuit is connected to the first node and a first voltage terminal, and controls a level of a leakage prevention node under control of the level of the first node, whereby a conductive path is formed between the leakage prevention node and the first voltage terminal, and a circuit connected between the first node and the leakage prevention node is turned off. | 2021-07-01 |
20210201808 | GATE DRIVING CIRCUIT AND IMAGE DISPLAY DEVICE INCLUDING THE SAME - A gate driving circuit and an image display device including the gate driving circuit are provided. In some embodiments of the present disclosure, the gate driving circuit includes a plurality of stages configured to sequentially and repeatedly output a plurality of scan pulses having different pulse widths in response to a gate control signal applied from a timing controller and the plurality of stages sequentially generate the plurality of scan pulses having different pulse widths and phase-delayed in response to three-phase clock pulses among the gate control signals and sequentially supply the plurality of scan pulses to gate lines of a display panel to selectively adjust a light emission period or a color display period for each red pixel, green pixel, and blue pixel, thereby improving image quality. | 2021-07-01 |
20210201809 | SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT, DISPLAY DEVICE AND DRIVING METHOD - A shift register unit, a gate driving circuit, a display device and a driving method are provided. The shift register unit includes a first input circuit, an output circuit, a first control circuit, a first reset circuit, a second input circuit, a transmission circuit, and a storage circuit. The first input circuit is configured to control a level of a first node, he output circuit is configured to provide an output signal at an output terminal, the first control circuit is configured to control a level of a second node under control of the level of the first node, the first reset circuit is configured to reset the first node and the output terminal under control of the level of the second node, and the storage circuit is electrically connected to the second node, and is configured to stabilize the level of the second node. | 2021-07-01 |
20210201810 | DISPLAY PANEL, DISPLAY DEVICE, AND DRIVE METHOD - A display panel, a display device, and a drive method are provided. The display panel includes a plurality of sub-pixel units ( | 2021-07-01 |
20210201811 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - [Object] It is possible to further improve reliability. | 2021-07-01 |
20210201812 | BENDABLE DISPLAY PANEL, BENDABLE DISPLAY APPARATUS, AND BENDABLE DISPLAY DEVICE - The present disclosure provides a bendable display panel, a bendable display apparatus, and a bendable display device. The bendable display panel includes at least two non-bending areas, and at least one bending area disposed between two adjacent non-bending areas. Opposite sides of the at least one bending area are electrically connected to the adjacent non-bending areas respectively to form an integrated structure, wherein each of the at least two non-bending areas includes a display area provided with a gate array driving circuit, and a non-display area disposed at a periphery of the display area, the non-display area provided with an opening at a position corresponding to the at least one bending area. | 2021-07-01 |
20210201813 | GATE DRIVING CIRCUIT AND FLEXIBLE DISPLAY USING THE SAME - Disclosed herein are a gate driving circuit and a flexible display using the same. In gate driving circuit, a control block including an n | 2021-07-01 |
20210201814 | GATE DRIVING CIRCUIT AND LIGHT EMITTING DISPLAY APPARATUS COMPRISING THE SAME - A gate driving circuit and a light emitting display apparatus including the same are disclosed, in which current leakage of a control node may be avoided. The gate driving circuit includes first to mth stage circuits, wherein each of the first to mth stage circuits includes first to fifth control nodes, a node control circuit controlling a voltage of each of the first to fourth control nodes based on a first front carry signal, a sensing control circuit controlling a voltage of the fifth control node based on a line sensing preparation signal, a second front carry signal and a first reset signal, and a first node reset circuit controlling the voltage of the first control node based on the voltage of the fifth control node and a second reset signal, wherein the first node reset circuit may include a discharge path having two thin film transistors connected between a gate low potential voltage line and the fifth control node. | 2021-07-01 |
20210201815 | Display Device and Method for Controlling Same - Disclosed herein are a display device and a method for controlling the same, and more particularly, to a display device and a method for controlling the same that may compensate degradation of a display panel and may improve image quality. According to the method for controlling the display device of an embodiment, a pattern image is displayed respectively on a plurality of scan blocks set on the display panel. When the pattern image is displayed respectively on the plurality of scan blocks set on the display panel, a current value of each scan block is measured. Then a representative current value is compared with a predetermined reference value, and it is determined whether compensation data of each pixel included in each of the scan blocks is updated. | 2021-07-01 |
20210201816 | GATE DRIVING CIRCUIT AND DISPLAY APPARATUS COMPRISING THE SAME - A gate driving circuit and a display apparatus including the same are disclosed, in which a plurality of gate lines may be driven through one stage circuit. The gate driving circuit includes first to mth stage circuits outputting a plurality of scan signals by dividing the scan signals into a first signal group and a second signal group. The first to mth stage circuits are grouped into k number of stage groups having two adjacent stage circuits, stage circuits of jth stage group (j is a natural number of 1 to k−1) output the scan signals of the first signal group to be earlier than the scan signals of the second signal group, and stage circuits of (j+1)th stage group output the scan signals of the second signal group to be earlier than the scan signals of the first signal group. | 2021-07-01 |
20210201817 | GATE DRIVING CIRCUIT AND ELECTROLUMINESCENT DISPLAY DEVICE USING THE SAME - A gate driving circuit includes a plurality of stages that are dependently connected, wherein an n-th one of the stages (n being a natural number) comprises a node controller for controlling voltages of set and reset nodes, a scan signal generator controlled in accordance with the voltages of the set and reset nodes, thereby outputting a scan signal to a scan line of a display panel, and a reference voltage/high-level supply power output unit controlled in accordance with the voltages of the set and reset nodes, thereby outputting a reference voltage or a high-level supply voltage to a reference voltage line of the display panel. | 2021-07-01 |
20210201818 | DISPLAY APPARATUS AND MULTI-SCREEN DISPLAY APPARATUS INCLUDING THE SAME - A display apparatus and a multi-screen display apparatus including the display apparatus are provided. The display apparatus includes a substrate including a display portion, a plurality of pixels connected to a gate line and a data line disposed in the display portion, and a gate driving circuit disposed in the display portion to drive the gate line. The gate driving circuit includes a stage circuit unit including a plurality of stage circuits respectively disposed in a plurality of division regions defined in the display portion, and a circuit repair portion configured to repair at least one of the plurality of stage circuits. | 2021-07-01 |
20210201819 | DISPLAY DEVICE AND METHOD FOR CONTROLLING DISPLAY DEVICE - According to an embodiment of the present disclosure, a method for controlling a display device includes inputting frame data for each frame input period of a vertical synchronization signal, accumulating stress data for some pixels in predetermined accumulation units based on the frame data for each blank period of the vertical synchronization signal, accumulating an input time of the frame data, calculating a correction gain value for correcting the accumulated stress data based on the input time accumulated when the accumulation of the stress data is completed for all pixels, correcting the accumulated stress data based on the correction gain value, and storing the corrected accumulated stress data. | 2021-07-01 |
20210201820 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND COMPENSATION METHOD THEREFOR - The present disclosure relates to an organic light emitting display device. The device includes, among others, a controller including a data compensator configured to accumulate stress data applied to organic light emitting diodes (OLEDs) on the basis of input image data, to generate accumulated stress data under a condition for recovery of accumulated loss in a loss region, to compress and restore the accumulated stress data in a lossless manner and a loss manner to determine a compensated value and to output the compensated value. Accordingly, it is possible to estimate previous loss data on the basis of new image data to be currently accumulated, recover loss and accumulate data to prevent accumulation of loss and efficiently compensate for afterimage due to deterioration of OLEDs to extend the period of use. | 2021-07-01 |
20210201821 | DISPLAY DEVICE AND COMPENSATION METHOD - A display device and a compensation method of the display device are discussed. A sensing method for compensation, which is performed after a display device is powered off, includes displaying 1 black frame, charging a node M of a shift register A connected to a j | 2021-07-01 |
20210201822 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - In a display device, first to second data lines, first to second data transfer lines, first to fourth capacitance elements, a power supply line to which a fixed voltage is supplied, a first switch provided between the first data transfer line and the second capacitance element, a second switch provided between the power supply line and the second capacitance element, a third switch provided between the second data transfer line and the fourth capacitance element, a fourth switch provided between the power supply line and the fourth capacitance element, a first power supply supplying the fixed voltage to one end of the power supply line, and a second power supply supplying the fixed voltage to another end of the power supply line. | 2021-07-01 |
20210201823 | Display Device - A display device includes a display panel having a plurality of sub-pixels to display an image; a data driver for supplying image data to the plurality of sub-pixels; a gate driver for supplying a gate signal to the plurality of sub-pixels; a controller configured to convert a driving frequency of each of the data driver and the gate driver in a high frame rate mode; and a gamma voltage generator for generating gamma voltages respectively based on each driving frequency, wherein the controller is configured to generate a horizontal synchronization signal based on the driving frequency in the high frame rate mode. Accordingly, even when the driving frequency conversion occurs, image quality levels corresponding to various driving frequencies respectively may be kept uniform by applying the same operation duration to the various driving frequencies. | 2021-07-01 |
20210201824 | PIXEL CIRCUIT - A pixel circuit includes at least one pixel. The at least one pixel includes a first light emitting diode, a second light emitting diode, and a third light emitting diode. A first terminal of the first light emitting diode is configured to receive a voltage signal. A second terminal of the first light emitting diode is configured to receive a first current signal. A first terminal of the second light emitting diode is configured to receive the voltage signal. A second terminal of the second light emitting diode is configured to receive a second current signal. A first terminal of the third light emitting diode is configured to receive the voltage signal. A second terminal of the third light emitting diode is configured to receive a third current signal. | 2021-07-01 |
20210201825 | DISPLAY DEVICE - One or more embodiments of the present disclosure provides a display device. The display device includes a display panel which includes a plurality of pixels; a threshold voltage sensing circuit which senses a threshold voltage of a light emitting diode included in the plurality of pixels, a data compensating circuit which corrects a data signal in accordance with a variation of the threshold voltage and accumulated data to generate a corrected data signal, and a data driver which generates a data voltage in accordance with the corrected data signal to output the data voltage to the display panel, in which the data compensating circuit periodically corrects the data signal in accordance with a look-up table in which a relationship of the variation of the threshold voltage and the accumulated data is described during an aging period to generate the corrected data signal. The display device according to the present disclosure improves an image quality of the display. | 2021-07-01 |
20210201826 | DISPLAY DEVICE AND DRIVING METHOD OF THE SAME - The display device also includes a threshold voltage sensor configured to sense a threshold voltage of a white light emitting element included in the white sub-pixel, a data compensation unit configured to correct data signal depending on a variation in the threshold voltage and generate compensated data signal and a data driver configured to generate a data voltage according to the compensated data signal and output the data voltage to the display panel. The data compensation unit calculates an initial white gain depending on the variation in the threshold voltage. Therefore, the lifetime of the display device can be improved. | 2021-07-01 |
20210201827 | ELECTROLUMINESCENT DISPLAY DEVICE - An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, to generate pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator including first and second capacitors, and switching transistors, and a kick-back compensation transistor to apply a DC voltage higher than an initialization voltage to the first node in a kick-back compensation period between an initialization period and a data writing period. | 2021-07-01 |
20210201828 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE - An organic light emitting diode (OLED) display device is disclosed. In the OLED display device, a timing controller compares reference voltages output from driving integrated circuits (driving ICs). When a deviation occurs in the reference voltages, the timing controller compensates for the deviation of reference voltages. The OLED display device includes a display panel having reference voltage lines and a plurality of pixels, a data driving circuit having a plurality of driving ICs to generate reference voltages and to supply the reference voltages to the reference voltage lines of the display panel, and a timing controller for comparing reference voltages respectively output from the driving ICs to the display panel, thereby controlling the driving ICs such that the reference voltages respectively output from the driving ICs are equalized. | 2021-07-01 |
20210201829 | DRD Type Display Panel and Organic Light Emitting Display Device Using Same - The present disclosure relates to a DRD type display panel. The display panel includes first to fourth pixels; a first data line through which a data signal is transmitted to the first and second pixels; a second data line through which a data signal is transmitted to the third and fourth pixels; a first gate line through which a scan signal is transmitted to the first and third pixels; a second gate line through which a scan signal is transmitted to the second and fourth pixels; a reference voltage line used to detect deterioration of OLEDs in the first to fourth pixels; a first power line positioned on the left of the first data line and supplying driving power to the first and second pixels; and a second power line positioned on the right of the second data line and supplying driving power to the first and second pixels. | 2021-07-01 |
20210201830 | Organic Light-Emitting Diode Display Device and Driving Method Thereof - Disclosed is an organic light-emitting diode display device including: a display panel in which pixels adjacent to each other are paired and arranged to share a single data line in pixel areas defined by gate and data lines; a gate driver configured to drive the plurality of gate lines; a data driver configured to output a data voltage to data voltage output channels on the basis of an arrangement of pixels; a data switcher configured to alternately select a data line and to electrically connect the data line with the data voltage output channel of the data driver; and a timing controller configured to control the data switcher and the gate and data drivers, thereby making it possible to drive a data driving circuit at high driving frequency and to reduce a deterioration of image quality and image distortion even in a simplified structure of the data driving circuit. | 2021-07-01 |
20210201831 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed are a display device and a driving method thereof. A pixel circuit of the display device may be driven in a data sampling phase and a light emitting phase. A electric current flows in a first effective channel of a driving element in the data sampling phase and a electric current flows in a second effective channel of the driving element in the light-emitting phase. | 2021-07-01 |
20210201832 | GATE DRIVING CIRCUIT AND DISPLAY DEVICE USING THE SAME - A gate driving circuit includes a Q node controller generating a voltage of a Q node by using a first clock, a second clock, a third clock, and a start signal; a QB node controller generating a voltage of a QB node by using the second clock and the third clock; and an output part including a pull-up TFT and a pull-down TFT and generating an output signal including a first pulse interval, of a gate-on voltage, synchronized with a part of the first clock according to the voltages of the Q node and the QB node. | 2021-07-01 |
20210201833 | DISPLAY DRIVING METHOD, DISPLAY DRIVE DEVICE, DISPLAY DEVICE, AND STORAGE MEDIUM - A display drive method of a display device, a display drive device, a display device, and a storage medium are provided. The display device includes a display panel and a backlight module configured to provide backlight to the display panel, the display drive method includes: determining a first pixel unit area corresponding to a light-emitting area of the backlight module and a second pixel unit area corresponding to a non-light-emitting area of the backlight module in the display panel; for the first pixel unit area and the second pixel unit area, respectively generating a first clock signal and a second clock signal. | 2021-07-01 |
20210201834 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device comprising a backlight and a pixel portion including first to 2n-th scan lines, wherein, in a first case of expressing a color image, first pixels controlled by the first to n-th scan lines are configured to express a first image using at least one of first to third hues supplied in a first rotating order, and second pixels controlled by the (n+1)-th to 2n-th scan lines are configured to express a second image using at least one of the first to third hues supplied in a second rotating order, wherein, in a second case of expressing a monochrome image, the first and second pixels controlled by the first to 2n-th scan lines are configured to express the monochrome image by external light reflected by the reflective pixel electrode, and wherein the first rotating order is different from the second rotating order. | 2021-07-01 |