Patents by Inventor Shoichi Uchino
Shoichi Uchino has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8203261Abstract: A flexible display device bendable in a certain direction is realized. R, G, and B pixels are arranged in a mosaic pattern. The display is bendable in a first direction, but is not assumed to be bent in a second direction. A data line extends in the first direction and a select line extends in the second direction. In order to prevent accumulation of distortion in the data line and breakage of the data line when the display is bent in the first direction, the data line is formed into a crank shape. Accordingly, even when the display is bent, an amount of distortion accumulated in the data line corresponds to only a length thereof in the first direction, and therefore, the distortion can be reduced. As a result, breakage of a wire in a flexible display can be prevented.Type: GrantFiled: August 21, 2008Date of Patent: June 19, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Masahiro Tanaka, Hitoshi Azuma, Shoichi Uchino, Tomio Yaguchi, Akiko Iwata
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Patent number: 8144382Abstract: The present invention enhances the repeatability of a low gray scale display of an image display device which uses oil layers. The enhancement of the repeatability of a low gray scale display can be realized by an image display device which includes a first insulation layer, a second insulation layer, a first oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a first insulation layer side, a second oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a second insulation layer side, first electrodes which are arranged outside the first insulation layer, and second electrodes which are arranged outside the second insulation layer.Type: GrantFiled: May 22, 2007Date of Patent: March 27, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Takahiko Muneyoshi, Nobuaki Hayashi, Shoichi Uchino, Tomio Yaguchi, Akiko Iwata
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Patent number: 8089428Abstract: In an image display apparatus using an FED or an organic EL element, image display that is high in illumination uniformity and high in image quality can be performed. A display element with a matrix structure which conducts linear sequential driving which determines the luminance by a current is used, a threshold voltage of a cathode line immediately before one select period has been terminated where a control electrode line is sequentially driven is measured by a threshold voltage measuring section, the measured threshold voltage is recorded for each of the pixels, and a driving signal at the time of selecting the pixel is corrected by using the value of the recorded threshold voltage, to thereby control electric charge that is emitted from a cathode.Type: GrantFiled: October 24, 2006Date of Patent: January 3, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Tomio Yaguchi, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takahiko Muneyoshi, Susumu Sasaki, Shoichi Uchino, Akiko Iwata, Makoto Okai, Tetsuya Yamazaki, Nobuaki Hayashi
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Publication number: 20110199681Abstract: The present invention provides a display device having no less flexibility even in the case where a plate, such as a polarizing plate, is provided to the display cell with the distortion of the image being controllable, and the display device has a display cell DC on which an image can be displayed and a plate (PP1, 2) pasted to at least one side of the above described display cell, wherein the adhesiveness of the display cell to the plate in the direction perpendicular to the surface of the display cell that faces the plate is greater than the adhesiveness in the direction parallel to the facing surface.Type: ApplicationFiled: February 11, 2011Publication date: August 18, 2011Inventors: Tomio YAGUCHI, Yasushi Nakano, Shoichi Uchino, Tetsuya Nagata
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Publication number: 20110199565Abstract: This invention enables forming a photo-alignment film having a large LC anchoring strength in an IPS type liquid crystal display device. An alignment film is adapted to have a two-layer structure including a photo-alignment film and an alignment film with enhanced film strength. The photo-alignment film is formed of a precursor of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane. The alignment film with enhanced film strength is formed of a precursor of polyamide acid. After irradiating the substrate with ultraviolet light for photo-alignment, the substrate is heated. Thus, it is possible to achieve a high LC anchoring strength of the alignment film as the whole for photo-alignment, without degrading the mechanical strength of the alignment film with enhanced film strength.Type: ApplicationFiled: February 16, 2011Publication date: August 18, 2011Inventors: Noboru KUNIMATSU, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka
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Publication number: 20110115999Abstract: Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.Type: ApplicationFiled: November 10, 2010Publication date: May 19, 2011Inventors: Shoichi UCHINO, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Tomio Yaguchi, Toshiki Kaneko, Jun Tanaka
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Publication number: 20110096277Abstract: A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.Type: ApplicationFiled: October 20, 2010Publication date: April 28, 2011Inventors: Shoichi UCHINO, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Masaki Matsumori, Yasushi Tomioka, Jun Tanaka
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Patent number: 7903192Abstract: The invention provides a display device which can reduce breaking of a TFT substrate at the time of connecting a wiring member to the TFT substrate after decreasing a thickness of the TFT substrate and a manufacturing method of the display device. A TFT substrate and a counter substrate are adhered to each other to form a display panel. After connecting a wiring member to a line connection portion of the display panel, a portion of the display panel to be etched is masked. An etching protective film formed of an organic film is applied to the masked display panel by coating. Thereafter, a mask is peeled off together with the etching protective film formed on the mask and the display panel is immersed in an etchant thus polishing an exposed surface of a glass substrate to a predetermined thickness. Thereafter, a chemical polishing protective film formed on a wiring member is removed.Type: GrantFiled: August 12, 2008Date of Patent: March 8, 2011Assignee: Hitachi Displays, Ltd.Inventors: Hitoshi Azuma, Susumu Sasaki, Takao Ebine, Tomio Yaguchi, Shoichi Uchino, Akiko Iwata
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Publication number: 20100073615Abstract: A liquid crystal display device including a first substrate and a second substrate which are arranged to face each other via a liquid crystal layer, the first substrate and the second substrate each being formed of a resin base material, includes: an adhesive layer which is formed on the liquid crystal layer side of the first substrate to fix a liquid crystal drive layer formed with pixels in a matrix to the first substrate; and an under layer which is formed between a light shielding film and a colored filter layer both corresponding to each of the pixels and the second substrate and formed of a thin film material having a thermal expansion coefficient smaller than that of the second substrate.Type: ApplicationFiled: September 21, 2009Publication date: March 25, 2010Inventors: Tomio YAGUCHI, Susumu Sasaki, Shoichi Uchino, Hitoshi Azuma, Yasushi Nakano, Takao Ebine
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Publication number: 20090213314Abstract: A liquid crystal display device includes a first substrate and a second substrate which sandwiches a liquid crystal between itself and the first substrate, wherein the first substrate has thin film transistors and a wiring connection portion in which are formed terminals connected to the thin film transistors, a wiring substrate connected to the terminals is disposed in the wiring connection portion, the second substrate is a plastic substrate, and has an adhesive layer and an inorganic insulating layer formed on top of the adhesive layer, and the adhesive layer covers the wiring connection portion and one portion of the wiring substrate.Type: ApplicationFiled: January 16, 2009Publication date: August 27, 2009Inventors: Hitoshi Azuma, Susumu Sasaki, Tomio Yaguchi, Takao Ebine, Katsuyuu Takahashi, Shoichi Uchino, Akiko Iwata
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Publication number: 20090201443Abstract: A liquid crystal display device preventing a liquid crystal display panel from damage by bending of a light-transmissive substrate and capable of curving a display surface of the panel is provided. The liquid crystal display device comprising: a liquid crystal display panel having a liquid crystal layer sealed between a pair of light-transmissive substrates having pixel formation electrodes on inner surfaces thereof, and formed by assembling positive and negative curved surfaces with respect to one direction; a backlight mounted on a rear surface of the panel along a curved shape of the panel and having at least one light emission device irradiating illumination light toward the rear surface; and a resin member held in a space between peripheral portions where the panel is opposed to the backlight, and fixing and holding a curved state, is provided. Distortion of the light transmissive glass substrates by bending of the panel is eased.Type: ApplicationFiled: August 7, 2008Publication date: August 13, 2009Inventors: Susumu Sasaki, Hitoshi Azuma, Takao Ebine, Tomio Yaguchi, Shoichi Uchino, Akiko Iwata
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Patent number: 7553208Abstract: A manufacturing method of organic electroluminescence display device according to the present invention performs (1) a first step for forming a non-affinity region in a surface of an anode provided in each of pixels arranged on a glass substrate by exposing the glass substrate in a saturated vapor pressure of an organic solvent, (2) a second step for forming an affinity region in a central portion of the anode surface spaced from its edges by irradiating the central portion of the anode surface with ultraviolet light, and (3) a third step for forming polymer material layers which constitute an organic electroluminescent element in the each of the pixels in the affinity region by blowing off polymer material solutions onto the affinity region of the anode in the each of the pixels, in this order, to simplify entire steps in, to reduce cost for, and to improve productivity of the manufacturing process of the organic electroluminescence display device thereby.Type: GrantFiled: December 15, 2006Date of Patent: June 30, 2009Assignee: Hitachi Displays, Ltd.Inventors: Akiko Yasukawa, Shoichi Uchino, Emiko Yamada, Nobuaki Hayashi
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Publication number: 20090051640Abstract: A flexible display device bendable in a certain direction is realized. R, G, and B pixels are arranged in a mosaic pattern. The display is bendable in a first direction, but is not assumed to be bent in a second direction. A data line extends in the first direction and a select line extends in the second direction. In order to prevent accumulation of distortion in the data line and breakage of the data line when the display is bent in the first direction, the data line is formed into a crank shape. Accordingly, even when the display is bent, an amount of distortion accumulated in the data line corresponds to only a length thereof in the first direction, and therefore, the distortion can be reduced. As a result, breakage of a wire in a flexible display can be prevented.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Inventors: Masahiro Tanaka, Hitoshi Azuma, Shoichi Uchino, Tomio Yaguchi, Akiko Iwata
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Publication number: 20090045752Abstract: The invention provides a display device which can reduce breaking of a TFT substrate at the time of connecting a wiring member to the TFT substrate after decreasing a thickness of the TFT substrate and a manufacturing method of the display device. A TFT substrate and a counter substrate are adhered to each other to form a display panel. After connecting a wiring member to a line connection portion of the display panel, a portion of the display panel to be etched is masked. An etching protective film formed of an organic film is applied to the masked display panel by coating. Thereafter, a mask is peeled off together with the etching protective film formed on the mask and the display panel is immersed in an etchant thus polishing an exposed surface of a glass substrate to a predetermined thickness. Thereafter, a chemical polishing protective film formed on a wiring member is removed.Type: ApplicationFiled: August 12, 2008Publication date: February 19, 2009Inventors: Hitoshi AZUMA, Susumu SASAKI, Takao EBINE, Tomio YAGUCHI, Shoichi UCHINO, Akiko IWATA
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Publication number: 20070279347Abstract: The present invention enhances the repeatability of a low gray scale display of an image display device which uses oil layers. The enhancement of the repeatability of a low gray scale display can be realized by an image display device which includes a first insulation layer, a second insulation layer, a first oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a first insulation layer side, a second oil layer which is arranged between the first insulation layer and the second insulation layer and, at the same time, is provided on a second insulation layer side, first electrodes which are arranged outside the first insulation layer, and second electrodes which are arranged outside the second insulation layer.Type: ApplicationFiled: May 22, 2007Publication date: December 6, 2007Inventors: Takahiko Muneyoshi, Nobuaki Hayashi, Shoichi Uchino, Tomio Yaguchi, Akiko Iwata
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Publication number: 20070172979Abstract: The present invention relates to a manufacturing method which uses an ink jet method for forming various kinds of thin films in an electronic device such as an organic EL panel or an organic thin film transistor and ink suitably used in the method. The manufacturing method manufactures an electronic device such as an organic layer which forms a pixel portion of a hole injection layer or the like of an organic EL panel or an active layer of an organic thin film transistor using ink composition which is formed by adding tertiary-alcohol into ink which uses water as a main solvent. As the tertiary-alcohol, 3-methyl-1-butyn-3-ol may be used. An addition quantity of alcohol with respect to ink is set to a value which falls within a range from approximately 25wt % to 40wt %.Type: ApplicationFiled: January 19, 2007Publication date: July 26, 2007Inventors: Shoichi Uchino, Akiko Iwata, Yoshihiro Arai, Hitoshi Azuma, Tomio Yaguchi
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Publication number: 20070145902Abstract: In an image display apparatus using an FED or an organic EL element, image display that is high in illumination uniformity and high in image quality can be performed. A display element with a matrix structure which conducts linear sequential driving which determines the luminance by a current is used, a threshold voltage of a cathode line immediately before one select period has been terminated where a control electrode line is sequentially driven is measured by a threshold voltage measuring section, the measured threshold voltage is recorded for each of the pixels, and a driving signal at the time of selecting the pixel is corrected by using the value of the recorded threshold voltage, to thereby control electric charge that is emitted from a cathode.Type: ApplicationFiled: October 24, 2006Publication date: June 28, 2007Inventors: Tomio Yaguchi, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takahiko Muneyoshi, Susumu Sasaki, Shoichi Uchino, Akiko Iwata, Makoto Okai, Tetsuya Yamazaki, Nobuaki Hayashi
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Publication number: 20070087646Abstract: A manufacturing method of organic electroluminescence display device according to the present invention performs (1) a first step for forming a non-affinity region in a surface of an anode provided in each of pixels arranged on a glass substrate by exposing the glass substrate in a saturated vapor pressure of an organic solvent, (2) a second step for forming an affinity region in a central portion of the anode surface spaced from its edges by irradiating the central portion of the anode surface with ultraviolet light, and (3) a third step for forming polymer material layers which constitute an organic electroluminescent element in the each of the pixels in the affinity region by blowing off polymer material solutions onto the affinity region of the anode in the each of the pixels, in this order, to simplify entire steps in, to reduce cost for, and to improve productivity of the manufacturing process of the organic electroluminescence display device thereby.Type: ApplicationFiled: December 15, 2006Publication date: April 19, 2007Inventors: Akiko Yasukawa, Shoichi Uchino, Emiko Yamada, Nobuaki Hayashi
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Publication number: 20060045959Abstract: The present invention provides a method which can form a uniform amorphous film using an organic low molecular weight material which is refined by distillation or sublimation. The viscosity of ink is regulated by mixing two kinds of solvents so as to increase a surface tension of the ink and the solubility of the organic material in a drying step whereby an amorphous film made of an organic material is selectively formed in a recessed region defined by a partition wall layer using an ink jet method.Type: ApplicationFiled: August 22, 2005Publication date: March 2, 2006Inventors: Akiko Yasukawa, Shoichi Uchino, Yoshihiro Arai, Masahiro Tanaka, Masato Ito, Tomio Yaguchi
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Publication number: 20050003567Abstract: A method of manufacture of an organic electroluminescence display device includes (1) a first step of forming a non-affinity region in a surface of an anode provided in each of the pixels arranged on a glass substrate by exposing the glass substrate in a saturated vapor pressure of an organic solvent, (2) a second step of forming an affinity region in a central portion of the anode surface spaced from its edges by irradiating the central portion of the anode surface with ultraviolet light, and (3) a third step of forming polymer material layers which constitute an organic electroluminescent element in each of the pixels in the affinity region by blowing off polymer material solutions onto the affinity region of the anode in the each of the pixels. In this way, it is possible to simplify the steps in, to reduce the cost for, and to improve the productivity of the process of manufacture of the organic electroluminescence display device.Type: ApplicationFiled: May 25, 2004Publication date: January 6, 2005Inventors: Akiko Yasukawa, Shoichi Uchino, Emiko Yamada, Nobuaki Hayashi