Patent application number | Description | Published |
20090059349 | Sheet for electrophoretic display devices, process for its production, and its applications - The sheet for electrophoretic display devices according to the present invention includes a data displaying player between electrically conductive layers of two opposite electrode films, the data display layer containing microcapsules for electrophoretic display devices and a binder resin, wherein the binder resin has a weight-average molecular weight of from 40,000 to 300,000 and a glass transition temperature of from −50° C. to 10° C. This sheet can be produced by forming the data display layer on an electrically conductive layer of a first electrode film and putting an electrically conductive layer of a second electrode film on the date displaying layer, followed by lamination. This sheet can be used, as its applications, for electrophoretic display devices using the sheets for electrophoretic display devices, and electronic equipments using the electrophoretic display devices. | 03-05-2009 |
20090061209 | Coating composition for electrophoretic display devices, sheet for electrophoretic display devices, process for its production, and its applications - The coating composition for electrophoretic display devices according to the present invention contains microcapsules for electrophoretic display devices and a binder resin, wherein the binder resin has a glass transition temperature (Tg) in a range of from −85° C. to −10° C. as calculated by FOX formula and has a residual monomer concentration of 500 ppm or lower in a solid content thereof. The sheet for electrophoretic display devices according to the present invention has a microcapsule layer formed from the above-described coating composition for electrophoretic display devices on a base material sheet. The sheet for electrophoretic display devices according to the present invention can be used, as its applications, for electrophoretic display devices using the sheets, and electronic equipments using the electrophoretic display devices. | 03-05-2009 |
20090109521 | Electrophoretic display sheet, electrophoretic display device and electronic apparatus - An electrophoretic display sheet capable of increasing pressure resistance and bleed resistance of microcapsules and constructing an electrophoretic display device stably operable for a long period of time, a highly reliable electrophoretic display device and a highly reliable electronic apparatus are provided. The electrophoretic display sheet includes a base substrate having one major surface, and a microcapsule-containing layer provided on the side of the one major surface of the base substrate and having one major surface, the microcapsule-containing layer including a plurality of microcapsules, each of the microcapsules having a shell and an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles and encapsulated into the shell, wherein the microcapsules exist in a generally spherical shape within the microcapsule-containing layer. | 04-30-2009 |
20090128889 | Display device, method of manufacturing display device and electronic apparatus - A display device capable of easily and reliably obtaining an intermediate tone and reliably maintaining individual colors including the intermediate tone even at stoppage of application of an electrical voltage, a manufacturing method of a display device capable of easily and reliably manufacturing the display device, and an electronic apparatus provided with the display device are provided. The display device has a display surface. The display device includes an adsorption particle-containing layer including a wall portion with an inner surface for defining a space, a plurality of electrically charged adsorption particles provided within the space in an adsorbed state that they are adsorbed to the inner surface of the wall portion, and a substantially transparent medium provided within the space, and a pair of electrodes that, when applied with an electrical voltage, generate electrical fields to act on the adsorption particles, wherein in the case where the electrical voltage is applied to between the electrodes, the adsorption particles are moved along the inner surface of the wall portion while maintaining the adsorbed state. | 05-21-2009 |
20090207477 | Electrophoretic display device, method of manufacturing electrophoretic display device, and electronic device - An electrophoretic display device is provided. The electrophoretic display device comprises a first electrode provided on a surface of a first base member; second electrodes provided on a surface of a second base member so that the second electrodes are placed in a facing relationship with the first electrode; and a plurality of microcapsules provided between the first electrode and the second electrodes, the plurality of microcapsules each having an internal space filled with an electrophoretic dispersion liquid, and the electrophoretic dispersion liquid containing electrophoretic particles. The electrophoretic display device is configured so that spaces are formed between the adjacent microcapsules and between the first electrode and the second electrodes. The electrophoretic display device can exhibit superior display performance and can be driven with a low voltage and reduced electricity consumption. A method of manufacturing an electrophoretic display device and an electronic device are also provided. | 08-20-2009 |
20090208730 | Method of manufacturing electrophoretic display device, electrophoretic display device and electronic device - A method of manufacturing an electrophoretic display device is provided. The method comprises: preparing a plate-shaped first electrode provided on a first base portion, and the first electrode having a surface; preparing plate-shaped second electrodes provided on a second base portion; forming a first binder layer on the surface of the first electrode; supplying a plurality of microcapsules on the first binder layer, the plurality of microcapsules each having an internal space, the internal space filled with an electrophoretic dispersion liquid, the electrophoretic dispersion liquid containing electrophoretic particles having different colors, and the plurality of microcapsules including properly-sized microcapsules and improperly-sized microcapsules; fixing the properly-sized microcapsules to the surface of the first electrode through the first binder layer to obtain an electrophoretic display sheet; removing the improperly-sized microcapsules which are not brought into contact with the first binder layer from the electrophoretic display sheet; forming a second binder layer on the first binder layer so as to cover the properly-sized microcapsules; and providing the second electrodes on the second binder layer to obtain the electrophoretic display device. The method is capable of efficiently manufacturing the electrophoretic display device having high display performance by arranging microcapsules on electrodes so that the microcapsules are not overlapped with each other. Further, an electrophoretic display device and an electronic device are also provided. | 08-20-2009 |
20090315824 | Electrophoretic display sheet, electrophoretic display apparatus, and electronic device - An electrophoretic display sheet comprising a display layer, a first electrode, and second electrodes. The display layer has a plurality of reservoir portions filled with a dispersion liquid containing particles. Each of the plurality of reservoir portions has predetermined positions. When an electric field having a direction is generated by applying a voltage to between the first electrode and the second electrodes, the particles are locally gathered to the predetermined positions of each of the plurality of reservoir portions so as to make rows of the particles along the direction of the electric field in the dispersion liquid. The electrophoretic display sheet is capable of exhibiting both superior responsiveness (responsibility) and superior color display performance with high contrast in changing a display color. | 12-24-2009 |
20100020385 | MICROCAPSULES FOR ELECTROPHORETIC DISPLAY DEVICES, AND PROCESSES FOR THEIR PRODUCTION, AND THEIR APPLICATIONS - The microcapsules for electrophoretic display devices according to the present invention each enclose a dispersion containing electrophoretic particles and a solvent in a shell having an inner shell made of a mercapto group-containing amino resin and an outer shell made of an epoxy resin. Alternatively, the microcapsules for electrophoretic display devices according to the present invention each have a capsule strength of 0.6 MPa or higher. These microcapsules are produced by dispersing a dispersion containing electrophoretic particles and a solvent as a core substance in a water-based medium, and subsequently forming at least one shell on the surface of the core substance. These microcapsules can be used, as their applications, for sheets for electrophoretic display devices, electrophoretic display devices using the sheets, and electronic equipments using the electrophoretic display devices. | 01-28-2010 |
20100079436 | METHOD OF DRIVING ELECTROPHORETIC SHEET, DISPLAY DEVICE AND ELECTRONIC APPARATUS - A method of driving an electrophoretic display device (a display device) having a first electrode, a second electrode, a microcapsule-containing layer (a display section), a capacitance element, and a voltage application switching element, comprising a first state in which the voltage application switching element is placed in ON state to apply a voltage between the electrodes and to charge an electric charge in the capacitance element, a second state in which the voltage is applied between the electrodes through discharging of the electric charge stored in the capacitance element, and a third state in which the voltage is not applied between the electrodes and the electric charge stored in the capacitance element is discharged. | 04-01-2010 |
20100097685 | Display device, method of manufacturing display device and electronic apparatus - A display device comprises a microcapsule-containing layer including a plurality of microcapsules. A variation of the outer diameters of the microcapsules can be defined by an average value and a CV value. Each of the microcapsules is comprised of: a shell having an inner surface; contact particles electrically charged and provided within the shell in an contact state that the contact particles are in contact with the inner surface of the shell; and a scattering body for scattering light; or a colored particles having a different hue from the hue of the contact particles. The display device further comprises a pair of electrodes that when an electrical voltage is applied to between the pair of electrodes, electrical fields to act on the contact particles are generated. The average value of the outer diameters of the microcapsules is in the range of 20 to 60 μm, and the CV value of the outer diameters of the microcapsules is 20% or less. In a case where the electrical voltage is applied to between the pair of electrodes, the contact particles are moved along the inner surface of the shell while maintaining the contact state with the inner surface of the shell. | 04-22-2010 |
20100097686 | ELECTROPHORETIC SHEET, ELECTROPHORESIS APPARATUS, METHOD FOR MANUFACTURING AN ELECTROPHORESIS APPARATUS AND ELECTRONIC DEVICE - An electrophoretic sheet includes a substrate having one surface and the other surface, a microcapsule-containing layer comprised of a plurality of microcapsules, the microcapsule-containing layer provided on the other surface of the substrate, each of the plurality of microcapsules having a capsule body and an electrophoretic dispersion liquid contained in the capsule body, the electrophoretic dispersion liquid containing a plurality of electrophoretic particles of at least one color, and the capsule body having an inner circumferential surface and an outer circumferential surface, and at least one colored part provided on the external side of the inner circumferential surface of the capsule body of each of the plurality of microcapsules, and wherein each colored part has a color complementary to the color of the plurality of electrophoretic particles. By using the electrophoretic sheet mentioned above, it is possible to provide the increased whiteness in display of the electrophoretic particles. An electrophoresis apparatus provided with such an electophoretic sheet is also provided. By using the electrophoresis apparatus, it is possible to provide a superior contrast ratio. It is also possible to obtain high reliability. A Method for manufacturing such an electrophoresis apparatus is also provided. An electronic device provided with such an electrophoresis apparatus is also provided. | 04-22-2010 |
20100165447 | PROCESS FOR PRODUCING MICROCAPSULES FOR ELECTROPHORETIC DISPLAY DEVICES, AS WELL AS MICROCAPSULES FOR ELECTROPHORETIC DISPLAY DEVICES, OBTAINED BY THIS PROCESS, AND THEIR APPLICATIONS - There is disclosed a process for producing microcapsules for electrophoretic display devices, including classifying microcapsules for electrophoretic display devices from a dispersion containing microcapsules in an aqueous medium, using a specific particle classification apparatus of the particle settling type. The resultant microcapsules for electrophoretic display devices are used, as their applications, for sheets for electrophoretic display devices, electrophoretic display devices, and electronic equipments. | 07-01-2010 |
20100259813 | DISPLAY DEVICE, METHOD OF MANUFACTURING DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device having a display surface, comprises: a contact particle-containing layer including a wall portion with an inner surface for defining a space, contact particles electrically charged and provided within the space in a contact state that the contact particles are in contact with the inner surface of the wall portion, the contact particles having a hue, and a scattering medium for scattering light or a colored medium having a different hue from the hue of the contact particles which is provided within the space; and a pair of electrodes that, when applied with an electrical voltage, generate electrical fields to act on the contact particles, wherein the display device is configured so that when the electrical voltage is applied to between the pair of electrodes, the contact particles are moved along the inner surface of the wall portion while maintaining the contact state. | 10-14-2010 |
20110025583 | SEALING METHOD OF SEALING DISPERSION LIQUID CONTAINING ELECTROPHORETIC PARTICLES, AND ELECTROPHORETIC DISPLAY - A sealing method is applicable to a cell matrix equipped with a plurality of cells spatially divided by a partition for sealing dispersion liquid containing hydrophobic dispersion medium and electrophoretic particles dispersed therein in the cells. The sealing method includes: supplying the dispersion liquid in the cells through an opening section of a space defined by the partition; and forming a sealing layer at an exposed portion of the dispersion liquid in the opening section, using a polymer reaction at an interface with water. | 02-03-2011 |
20110025681 | ELECTROPHORETIC DISPLAY, ELECTROPHORETIC DISPLAY DEVICE AND ELECTRONIC APPARATUS - An electrophoretic display includes: a plurality of spatially divided cells; and plural types of color substances contained in each of the cells wherein a display color is controlled by controlling electrophoresis of the colored substances within the cells, wherein each of a first cell, a second cell and a third cell included in the plurality of cells includes a first color substance corresponding to a mutually differing one of three primary colors in additive color mixing or subtractive color mixing and a second color substance in a relationship of complementary colors with the first color substance, wherein the first cell is controlled to be in a display state by the first color substance, and the second and third cells are controlled to be in a display state by the second color substance, respectively. | 02-03-2011 |
20110026098 | Electrophoretic Display Element, Electrophoretic Display Device, and Electronic Apparatus - An electrophoretic display element includes: a cell containing first and second electrophoretic particles mutually oppositely charged with positive and negative polarities; and first and second electrode sections disposed opposite to each other across the cell in a viewing direction of the cell, wherein the first electrode section includes first and second electrodes whose application voltages are individually controlled, and the second electrode section includes third and fourth electrodes whose application voltages are individually controlled. | 02-03-2011 |
20110222141 | METHOD FOR ENCLOSING DISPERSION LIQUID CONTAINING ELECTROPHORETIC PARTICLES AND ELECTROPHORETIC DISPLAY UNIT - To prevent the incorporation of gas, such as air (bubbles), into cells during the enclosure of a dispersion liquid containing electrophoretic particles in the cells. | 09-15-2011 |
20110256306 | METHOD FOR MANUFACTURING ELECTROPHORETIC DISPLAY APPARATUS - The following is included: loading cells spatially defined by partitions with a dispersion liquid containing electrophoretically mobile particles and a dispersion medium for dispersing the electrophoretically mobile particles, and covering the exposed surface of the dispersion liquid loaded in the cells with a sealing coating to seal the dispersion liquid in the cells. The dispersion medium is a lipophilic hydrocarbon solvent, and the sealing coating is made from a material containing a water-soluble polymer. | 10-20-2011 |
20110304904 | ELECTROPHORETIC DISPLAY DEVICE - An electrophoretic display includes a substrate, first electrodes arranged on the substrate, an electrophoretic layer arranged on the substrate so as to cover the first electrodes, a partition wall that divides the electrophoretic layer into a plurality of cells, and a second electrode arranged on the electrophoretic layer. The electrophoretic layer has electrophoretic particles and a dispersion medium that disperses the electrophoretic particles. The second electrode protrudes towards the first electrodes at the cell. | 12-15-2011 |
20110317249 | DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device includes a display layer provided with a cell in which first particles, second particles, and third particle with colors different to each other are contained, a front side electrode provided on the front side of the display layer, and a first and second back side electrodes provided corresponding to the cell on the back side of the display layer. The first particles are charged. The second particles have a color in a complementary color relation to that of the first particles, are charged with the opposite polarity to that of the first particles, and have a smaller amount of charge than that of the first particles. In the display device, a part where the first particles and the second particles are disproportionately located is set with the third particles dispersed in the cell, to change a color in the cell viewed from the front side electrode side. | 12-29-2011 |
20120062981 | ELECTRO-OPTICAL DISPLAY DEVICE AND PROCESS FOR MANUFACTURING THE SAME - An electro-optical display device includes a first substrate having an pixel electrode, a light-transmissive second substrate having a light-transmissive counter electrode, an electrophoretic layer interposed between the first substrate and the second substrate and having a liquid dispersion, a partition wall that defines a plurality of reservoirs containing the dispersion and a light-transmissive sealing layer that is provided between the partition wall and the counter electrode so as to seal the dispersion, and a light-transmissive hot melt conductive adhesive layer provided between the sealing layer and the counter electrode. | 03-15-2012 |
20120099181 | ELECTROPHORETIC DISPLAY DEVICE, METHOD OF MANUFACTURING THE SAME, AND ELECTRONIC APPARATUS - An electrophoretic display device includes: a substrate; partition walls which partition a space on the substrate into a plurality of cells; an electrophoretic dispersion liquid with which the plurality of cells on the substrate is filled; a sealing film which is disposed so as to face the substrate with the partition walls interposed therebetween and seals the plurality of cells; and phase separation portions which are partially formed between upper surfaces of the partition walls and the sealing film and in which the electrophoretic dispersion liquid is subjected to phase separation. | 04-26-2012 |
20120113499 | ELECTROPHRETIC DISPLAY AND ELECTRONICS DEVICE - An electrophoretic display includes a first substrate and a second substrate; base portions which are provided in a display area on the first substrate such that any two mutually adjacent ones of the base portions are disposed so as to have an interspace therebetween; reflection plates which are provided on upper surfaces of the base portions, respectively; first electrodes which are overlapped with the reflection plates, respectively; second electrodes which are provided in the interspaces on the first substrate so as to correspond to the first electrodes, respectively; a sealing member which is provided between the first and second substrates so as to enclose the display area; and dispersion liquid which is provided between the first and second substrates, and which includes a dispersion medium, and electrophoretic particles dispersed in the dispersion medium, the electrophoretic particles having a color different from the reflection plate. | 05-10-2012 |
20120182596 | ELECTROPHORETIC DISPLAY DEVICE AND ELECTRONIC APPARATUS - An electrophoretic display device includes a circuit substrate and an opposed substrate arranged to face each other, a dispersion liquid interposed between the circuit substrate and the opposed substrate, a plurality of platforms arranged to be spaced apart from each other with a slit therebetween in a display region on the circuit substrate, a plurality of reflectors respectively formed on top faces of the plurality of platforms, a slit electrode located in each slit, an opposed electrode formed on the opposed substrate, and an electrophoretic layer filled with a dispersion liquid which contains black particles having a different color from that of the reflectors and being dispersed in a dispersion medium. | 07-19-2012 |
20120314274 | ELECTROPHORETIC DISPLAY AND ELECTRONIC DEVICE - An electrophoretic display includes: a first substrate and a second substrate facing each other; a base portion provided on the first substrate; a first concave portion provided such that a surface of the second substrate side of the base portion is recessed, and a second concave portion having a shallower depth than that of the first concave portion; a reflection plate provided on the surface except for the first concave portion and the second concave portion; a first electrode provided in a bottom surface of the first concave portion; a second electrode provided in a bottom surface of the second concave portion; a third electrode provided in the second substrate; and a dispersion liquid filled between the first substrate and the second substrate, in which an electrophoretic particle having a different color from that of the reflection plate is dispersed in a dispersing medium. | 12-13-2012 |
20130265632 | ELECTROPHORETIC PARTICLE, MANUFACTURING METHOD OF ELECTROPHORETIC PARTICLE, ELECTROPHORETIC DISPERSED LIQUID, ELECTROPHORETIC SHEET, ELECTROPHORETIC APPARATUS, AND ELECTRONIC EQUIPMENT - An electrophoretic particle of the invention include: a mother particle; and a covering layer, wherein the covering layer includes a plurality of polymers, each of which includes a polymerization initiator which includes a polymerization initiation group linked to a surface of the mother particle and polymerization parts in which monomers are polymerized from the polymerization initiation group as a starting point, wherein each of the polymer include the polymerization initiator, a first polymerization part, which is coupled to the polymerization initiator, in which first monomers that includes monomers with cross-linking groups are polymerized, and a second polymerization part in which second monomers that does not include monomers with cross-linking groups are polymerized, and the polymers are linked to each other at the cross-linking groups of the first polymerization parts via cross-linking agent. | 10-10-2013 |
20130265633 | ELECTROPHORESIS PARTICLE, METHOD OF MANUFACTURING ELECTROPHORESIS PARTICLE, ELECTROPHORESIS DISPERSION LIQUID, ELECTROPHORESIS SHEET, ELECTROPHORESIS DEVICE AND ELECTRONIC APPARATUS - An electrophoresis particle of the embodiment includes a mother particle and a covering layer which covers at least a part of the mother particle, wherein the covering layer includes a shell which is consisted of an organic polymer and which cellulary engulfs the mother particle and a polymer which is bonded on the surface of the shell and the polymer is one that a monomer has been polymerized using living radical polymerization, setting the polymerization initiating group as the starting point. | 10-10-2013 |