Abstract: An electrophoretic device including a display region including a plurality of pixels, each having an electrophoretic dispersion layer, a capacitive element for storing charge for maintaining the electrical polarization of the electrophoresis dispersion, and an organic transistor for causing the capacitive element to store charge when turned on, wherein the electrophoretic dispersion layer has a electrophoresis dispersion. A driver region for optionally choosing pixels in the display region to turn on the transistors of the pixels is provided around the display region of the electrophoretic device. An electronic sheet is achieved by transmitting external signals to the driver region to freely change display contents on the display region.

Abstract: An electrophoretic device 20 is provided which includes a circuit board 1 provided with a plurality of pixel electrodes 3, a transparent electrode (counter electrode) 4 opposed to the individual pixel electrodes 3, an electrophoretic dispersion layer 11 containing an electrophoretic dispersion 11, the electrophoretic dispersion layer 11 being partially interposed between the electrodes, a plurality of thin-film transistors 30 disposed on a surface of the circuit board 1 remote from the electrophoretic dispersion layer 11, and conducting parts 8 extending through the circuit board 1 and electrically connecting the pixel electrodes 3 and the thin-film transistors to each other.

Abstract: An electrophoretic device is composed of a pair of electrodes that are arranged opposite to each other with a prescribed space therebetween, which contains an electrophoretic dispersion liquid containing electrophoretic particles which are dispersed in a liquid phase dispersion medium. At least one ferroelectric substance layer is arranged at a prescribed position within the space between the electrodes, and at least one of the electrodes is made of a transparent material. Applying a drive voltage between the electrodes, the electrophoretic particles are deposited on one electrode while ions of reverse polarity move towards another electrode, thus establishing the polarized state of the electrophoretic dispersion liquid, which is maintained for a long time due to the residual polarization characteristics of the ferroelectric substance layer.

Abstract: An electrophoretic device 20 of the present invention has an electrode 3 formed on a first substrate 1, a transparent electrode 4 formed on a second substrate 2, and microcapsules 40 accommodated between these electrodes 3 and 4, in which the microcapsules 40 enclose an electrophoretic dispersion 10 which contains a liquid-phase dispersion medium 6 and electrophoretic particles 5. In this electrophoretic device 20, wall films of the microcapsules at a viewing side are colored by a printing technique.

Abstract: In applying an application material 7 containing microcapsules 7 dispersed therein on a transparent film 1 on which an ITO electrode 2 is formed, the application is performed under a condition in which a voltage with polarity opposite to the electrophoretic particles in the microcapsules 7a is applied to the ITO electrode 2. Since the electrophoretic particles in the microcapsules 7a and the ITO electrode 2 are attracted to each other, the microcapsules 7a are attracted to the ITO electrode 2. Therefore, the microcapsules 7a in an upper layer of overlapping layers easily enter the spaces between the microcapsules 7a in a lower layer. It is thus possible to avoid overlapping of the microcapsules 7a, and obtain an electrophoretic layer 3 having the microcapsules uniformly arranged therein.

Abstract: In order to form an electrophoretic layer containing microcapsules at a desired region readily and accurately, a region having lyophobicity is formed on a member, and a microcapsule dispersion is then applied onto the member.

Abstract: An electrophoretic display capable of improved contrast. A back substrate 52 provided with a transparent electrode 54 and a transparent substrate 53 provided with transparent electrodes 551 to 553 are arranged at a predetermined distance D. Between the transparent substrate 53 and the back substrate 52 are arranged a large number of microcapsules. In each of the microcapsules 56A is sealed a dispersion comprised of electrophoretic particles 57 dispersed in a dispersion medium 61 in advance by the microcapsulation technique. The plurality of microcapsules 56A are sandwiched between the transparent substrate 53 and the back substrate 52. The display surface side and the back side thereof are flat in shape.

Abstract: The present invention provides: a microcapsule composition for electrophoretic displays; a production process for the microcapsule composition for the electrophoretic displays; a production process for a sheet for the electrophoretic displays; and a handling method for microcapsules for the electrophoretic displays; wherein the microcapsule composition contains microcapsules and, when used for the electrophoretic displays, can make them as excellent as conventional in various performances (e.g. longtime stability of displaying, respondability of displaying, contrast, and number of times of display rewritability) and, particularly above all, can make the electrophoretic displays exhibit a very high performance as to the contrast.

Abstract: An electrophoretic display device 20A includes a first substrate 1 having a first electrode 3, a second substrate 2 having a transparent electrode 4, and a electrophoretic dispersion liquid 10 filled in the space between the electrodes 3 and 4, wherein at least one of the electrodes 3 and 4 has an insulating film 11 thereon. A drive voltage generator 30 generates a drive voltage applied between the electrodes 3 and 4, and the waveform of the generated drive voltage changes with a time constant larger than the time constant of the insulating film 11 after the voltage is interrupted.

Abstract: To provide an electrophoretic dispersion, used for electrophoretic devices, containing electrophoretic particles having a density precisely adjusted by a simple method in order to prevent the settlement of the electrophoretic particles. An electrophoretic dispersion includes a liquid dispersion media and electrophoretic particles, dispersed in the liquid dispersion media, including at least coloring means, a resin portion, and a plurality of hollow microcapsules. The electrophoretic particles further include charge control portions according to needs.

Abstract: In order to form an electrophoretic layer containing microcapsules at a desired region readily and accurately, a region having lyophobicity or lyophilicity is formed on a member, and a microcapsule dispersion is then applied onto the member.

Abstract: The prevent invention is a method in which microcapsules are placed at desired locations selectively accurately and easily to produce a high accuracy electrophoretic display panel. In the production method of a display panel of the present invention, the microcapsules (43) are uniformly coated onto a substrate (41), on which electrodes (42) is formed by using an optical hardening resin as a binder material (44). Next, the binder material (44) is hardened by selectively irradiating a light beam to the only locations desired for placing the microcapsules (43) by using a photomask (45). The binder material (44) of portions not hardened is removed by washing in water. Thus, the microcapsules can be selectively and accurately placed at the only desired positions.

Abstract: To provide an electrophoretic display which is capable of improving the contrast. A back substrate 52 provided with a transparent electrode 54 and a transparent substrate 53 provided with transparent electrodes 551, to 553 are arranged at a predetermined distance D. Between the transparent substrate 53 and the back substrate 52 are arranged a large number of microcapsules. In each of the microcapsules 56A is sealed a dispersion comprised of electrophoretic particles 57 dispersed in a dispersion medium 61 in advance by the microcapsulation technique. The plurality of microcapsules 56A are sandwiched between the transparent substrate 53 and the back substrate 52. The display surface side and the back side thereof are flat in shape.

Abstract: The present invention is a method in which microcapsules are placed at desired locations selectively accurately and easily to produce a high accuracy electrophoretic display panel. In the production method of a display panel of the present invention, the microcapsules (43) are uniformly coated onto a substrate (41), on which electrodes (42) is formed by using an optical hardening resin as a binder material (44). Next, the binder material (44) is hardened by selectively irradiating a light beam to the only locations desired for placing the microcapsules (43) by using a photomask (45). The binder material (44) of portions not hardened is removed by washing in water. Thus, the microcapsules can be selectively and accurately placed at the only desired positions.

Abstract: Object

Abstract: An electrophoretic device capable of realizing an improvement in response and long-term maintenance of good contrast, a method of manufacturing an electrophoretic device, an electronic apparatus, a microcapsule, and a method of manufacturing a microcapsule. The inner wall of a microcapsule 3 is coated with a hydrophobic material 8A having a hydrophobic functional group possessed by a surfactant 8.

Abstract: An electrophoretic display device 20A includes a first substrate 1 having a first electrode 3, a second substrate 2 having a transparent electrode 4, and a electrophoretic dispersion liquid 10 filled in the space between the electrodes 3 and 4, wherein at least one of the electrodes 3 and 4 has an insulating film 11 thereon. A drive voltage generator 30 generates a drive voltage applied between the electrodes 3 and 4, and the waveform of the generated drive voltage changes with a time constant larger than the time constant of the insulating film 11 after the voltage is interrupted.

Abstract: An electrophoretic device 20 of the present invention has an electrode 3 formed on a first substrate 1, a transparent electrode 4 formed on a second substrate 2, and microcapsules 40 accommodated between these electrodes 3 and 4, in which the microcapsules 40 enclose an electrophoretic dispersion 10 which contains a liquid-phase dispersion medium 6 and electrophoretic particles 5. In this electrophoretic device 20, wall films of the microcapsules at a viewing side are colored by a printing technique.

Abstract: An electrophoretic display device 20 of the present invention is formed of a first substrate 1, a second substrate 2, and microcapsules which are accommodated between these substrates and which contain an electrophoretic dispersion 10, wherein each of the microcapsules has an opening in at least a part thereof.

Abstract: An electrophoretic device according to the present invention comprises electrophoretic dispersion including a liquid-phase dispersion medium and electrophoretic particles dispersed therein, in which the positions of the electrophoretic particles are controlled in accordance with an electric field applied thereto. In addition, the electrophoretic device further has a first means for applying a first voltage so that a first dispersion state of the electrophoretic particles is changed into a second dispersion state and a second means for applying a second voltage so that the second dispersion state is substantially sustained. The electrophoretic device described above has superior image-sustaining properties.