Patent application number | Description | Published |
20090052165 | LIGHT-EMITTING DEVICE, ILLUMINATING DEVICE COMPRISING SAME, AND LIQUID CRYSTAL DISPLAY | 02-26-2009 |
20090066634 | LIGHTING DEVICE FOR DISPLAY DEVICE AND CONTROL CIRCUIT THEREOF - In a lighting device for a display device, sensor output determination portions determine whether color sensor output signals are greater than or equal to a predetermined threshold. Variable gain amplifiers amplify the color sensor output signals with a predetermined gain. A color control portion performs color control based on post-amplification signal and obtains luminances of three types of LEDs. Constant current circuits and the PWM circuits drive the three types of LEDs in accordance with control from the color control portion. Gains of the variable gain amplifiers are switched in a stepwise manner so as to become higher as the color sensor output signals become lower. Thus, it is possible to perform color control with high accuracy even when darker light is provided. | 03-12-2009 |
20090067158 | ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY COMPRISING SAME - In a direct backlight, a substrate on which LEDs are provided includes a plurality of module substrates. Each module substrates can be reduced in warping or deformation after a blanking process. In addition, each module substrate can be formed thin since bending due to its own weight is small. Consequently, the substrate as a whole and the backlight can be formed thin. | 03-12-2009 |
20090116222 | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight unit and a liquid crystal display device improve uniformity of a luminance and a color of a display surface. The backlight unit includes a light source device and a circuit board, the light source device including a first board and a plurality of point light sources connected in series, the plurality of point light sources being arranged on the first board, and the circuit board including a second board, a driving circuit for the plurality of point light sources, and a variable resistance device, the driving circuit for the plurality of point light sources and the variable resistance device being arranged on the second board, wherein a resistance adjusting element of the variable resistance device is exposed to an outside, and at least one point light source arranged on an end side among the plurality of point light sources is connected in parallel to the variable resistance device. | 05-07-2009 |
20090116223 | LIGHT SOURCE DEVICE, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE - A light source device, a backlight unit, and a liquid crystal display device are each capable of improving uniformity of a luminance and a color of a display surface. The light source device includes a board; a plurality of point light sources arranged on a surface of the board and connected in series; and a variable resistor, wherein the variable resistor is disposed on the surface on which the plurality of point light sources are arranged of the board; at least one point light source arranged on an end side among the plurality of point light sources is connected in parallel to the variable resistor; and the board has a through-hole in a region where a variable resistor is located. | 05-07-2009 |
20090128732 | LIQUID CRYSTAL DISPLAY - In a liquid crystal display, an opening is formed in a lateral surface of a bezel of an LCD unit, and the opening serves as an LED module insert slot. An LED of an LED module is arranged on a substrate so as to emit light toward a light guide plate provided on the backside of a liquid crystal panel. The LED module is inserted into the LED module insert slot and fixed to a back plate arranged on the backside of the LED unit by using a fixing member such as a screw. | 05-21-2009 |
20090147534 | BACKLIGHT DEVICE AND DISPLAY DEVICE USING THE SAME - In a backlight device, among a plurality of light emitting diodes, light amounts thereof are measured in advance, and they are classified as any one of two or more light amount ranks according to the measurement results. In each of an upper region and a lower region of the light emitting diodes that are set on an upper side and lower side of a light guide plate, respectively, the light emitting diodes that are classified as having the same light amount rank are disposed. | 06-11-2009 |
20090201440 | LIGHT EMITTING ELEMENT, LIGHT EMITTING ELEMENT ARRAY, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE - A light emitting device includes a bump-shaped slug having a support plane at the top of the bump-shaped slug. The slug includes side planes arranged to function as optical action planes arranged to receive and reflect a portion of the light from the light emitting chip. | 08-13-2009 |
20090201669 | BACKLIGHT DEVICE, AND DISPLAY APPARATUS USING THE SAME - In a backlight device, two-channel LED modules including 4-light-emitting diodes connected in series and resistive elements connected in series to the respective LED module are provided. The resistor elements provide voltage drops to the corresponding LED modules, and thereby set output voltages to the respective LED modules in a predetermined voltage range. | 08-13-2009 |
20090231513 | ILLUMINATING DEVICE AND DISPLAY USING THE SAME - An illuminating device achieves higher brightness by improving the utilization efficiency of light from a light source in an illuminating device for emitting plane-shaped light. The backlight device includes a light guide member, and LED units facing side surfaces of the light guide member, and propagates light that is emitted by the LEDs and made incident to the side surfaces in the light guide member so as to emit plane-shaped light from a first main surface of the light guide member. The backlight device includes an insulating reflective member placed outside a second main surface of the light guide member facing the first main surface, and a metal reflective sheet laminated on the insulating reflective sheet on the side opposite to the light guide member. | 09-17-2009 |
20090244439 | LIGHT EMITTING DEVICE, ILLUMINATING APPARATUS HAVING THE SAME, AND LIQUID CRYSTAL DISPLAY APPARATUS - In a light emitting device, a substrate on which LEDs are arranged in line is used as a light source used for the sidelight of an illuminating apparatus serving as a backlight of sidelight type. The frame of the LED includes a first portion, a second portion, and a third portion. The second and third portions are arranged on both sides of the first portion. The length of the longest part of the first portion in a first direction d | 10-01-2009 |