Patents by Inventor Tetsuya Ohshima
Tetsuya Ohshima 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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Publication number: 20150111340Abstract: A wiring which is formed using a conductive film containing copper and whose shape is controlled is provided. A transistor including an electrode which is formed in the same layer as the wiring is provided. Further, a semiconductor device including the transistor and the wiring is provided. A resist mask is formed over a second conductive film stacked over a first conductive film; part of the second conductive film and part of the first conductive film are removed with use of the resist mask as a mask so that the first conductive film has a taper angle greater than or equal to 15° and less than or equal to 45?; and the resist mask is removed. The first conductive film contains copper.Type: ApplicationFiled: January 5, 2015Publication date: April 23, 2015Inventors: Takahiro SATO, Takayuki CHO, Shunsuke KOSHIOKA, Tetsuya OHSHIMA, Naoya SAKAMOTO
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Patent number: 8932903Abstract: A wiring which is formed using a conductive film containing copper and whose shape is controlled is provided. A transistor including an electrode which is formed in the same layer as the wiring is provided. Further, a semiconductor device including the transistor and the wiring is provided. A resist mask is formed over a second conductive film stacked over a first conductive film; part of the second conductive film and part of the first conductive film are removed with use of the resist mask as a mask so that the first conductive film has a taper angle greater than or equal to 15° and less than or equal to 45°; and the resist mask is removed. The first conductive film contains copper.Type: GrantFiled: May 2, 2013Date of Patent: January 13, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takahiro Sato, Takayuki Cho, Shunsuke Koshioka, Tetsuya Ohshima, Naoya Sakamoto
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Publication number: 20130302938Abstract: A wiring which is formed using a conductive film containing copper and whose shape is controlled is provided. A transistor including an electrode which is formed in the same layer as the wiring is provided. Further, a semiconductor device including the transistor and the wiring is provided. A resist mask is formed over a second conductive film stacked over a first conductive film; part of the second conductive film and part of the first conductive film are removed with use of the resist mask as a mask so that the first conductive film has a taper angle greater than or equal to 15° and less than or equal to 45°; and the resist mask is removed. The first conductive film contains copper.Type: ApplicationFiled: May 2, 2013Publication date: November 14, 2013Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Takahiro SATO, Takayuki CHO, Shunsuke KOSHIOKA, Tetsuya OHSHIMA, Naoya SAKAMOTO
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Patent number: 8248562Abstract: Provided is a display panel having a high-performance antireflection layer at a low cost. In a liquid crystal display panel or an organic light-emitting diode display panel constituted by a first transparent substrate, a second transparent substrate and a liquid crystal layer between these two transparent substrates further includes an antireflection layer on a portion which is at least one display area and a visible side (outer surface) by a viewer, and layers made of the same material as the antireflection layer formed on at least the opposite side (inside surface) of the surface of the portion corresponding to the display area and on three edge faces.Type: GrantFiled: August 28, 2006Date of Patent: August 21, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Masaya Adachi, Makiko Sugibayashi, Tetsuya Ohshima, Shinichi Komura
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Patent number: 7986297Abstract: Each of first electrodes has a width smaller than the width of each of second electrodes in one direction on the plane of a display substrate. The second electrodes are applied with a voltage which is modulated independently on a pixel-by-pixel basis to move electrophoretic particles, thereby displaying an image.Type: GrantFiled: July 8, 2004Date of Patent: July 26, 2011Assignee: Hitachi Displays, Ltd.Inventors: Tetsuya Ohshima, Hiroki Kaneko, Tatsuya Sugita
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Patent number: 7742137Abstract: A liquid crystal display device comprising a pair of substrates, a liquid crystal display panel having a liquid crystal layer positioned between the substrates, a transparent protective plate arranged on a front surface side of the display panel, and an optically transparent layer between the display panel and the protective plate, and wherein the protective plate includes fine concavity and convexity configurations on at least a surface thereof toward the display panel.Type: GrantFiled: August 11, 2006Date of Patent: June 22, 2010Assignee: Hitachi, Ltd.Inventors: Masaya Adachi, Makiko Sugibayashi, Tetsuya Ohshima, Katsumi Kondo, Hiroshi Sasaki
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Patent number: 7710515Abstract: In order to solve the problem that sufficient center brightness is not always obtained in a conventional liquid crystal TV and a liquid crystal monitor, a backlight module of the invention includes a plurality of cold cathode fluorescent lamps (CFL) and a diffusing reflector below, the distance between the respective CFLs is arranged so that a central portion is narrow and an end portion is wide, and the backlight module includes a triangular sectional projection structure on at the diffusing reflector only between the CFLs between which the distance is the widest, in the end portion. According to the invention, enhancement of the center brightness without increasing consumption power, reduction in the number of CFLs, and cost reduction accompanying it are achieved.Type: GrantFiled: September 27, 2006Date of Patent: May 4, 2010Assignee: Hitachi Display, Ltd.Inventors: Tetsuya Ohshima, Hitoshi Taniguchi, Takayuki Ota, Fumihiko Hieda, Naotoshi Sumiya
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Patent number: 7580181Abstract: A display that has a plurality of charged particles between a pair of substrates and displays images by moving the plurality of charged particles. The display comprises one substrate formed with a pixel electrode; the other substrate that is disposed to face the one surface and is formed with a counter electrode; a plurality of partitions for dividing the gap between the pair of substrates into a plurality of regions; and an insulating layer formed to have an insulating part and openings on the pixel electrode, and displays images by changing the potential difference applied between the pixel electrode and the counter electrode.Type: GrantFiled: January 19, 2007Date of Patent: August 25, 2009Assignee: Hitachi, Ltd.Inventors: Tetsuya Ohshima, Tatsuya Sugita
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Patent number: 7336410Abstract: A display of an electrochromic type, including an active matrix substrate on which a plurality of pixel electrodes corresponding to pixels are arranged in a matrix form; a counter substrate which is provided with a transparent electrode that is common with respect to a plurality of the pixel electrodes; and an electrochromic material which is sandwiched between the active matrix substrate and the counter substrate, and is colored in a boundary either between itself and the pixel electrode or between itself and the transparent electrode; wherein the pixel electrode other than an electrode-exposed part which contacts with the electrochromic material is covered with a transparent protective film; and the electrode-exposed part has a different area from the area of the part onto which a current generated between the transparent electrode and the pixel electrode concentrates, out of the transparent electrode.Type: GrantFiled: July 3, 2006Date of Patent: February 26, 2008Assignee: Hitachi Displays, Ltd.Inventors: Shoichi Hirota, Tetsuya Ohshima, Tatsuya Sugita
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Publication number: 20070211330Abstract: A display that has a plurality of charged particles between a pair of substrates and displays images by moving the plurality of charged particles. The display comprises one substrate formed with a pixel electrode; the other substrate that is disposed to face the one surface and is formed with a counter electrode; a plurality of partitions for dividing the gap between the pair of substrates into a plurality of regions; and an insulating layer formed to have an insulating part and openings on the pixel electrode, and displays images by changing the potential difference applied between the pixel electrode and the counter electrode.Type: ApplicationFiled: January 19, 2007Publication date: September 13, 2007Inventors: Tetsuya Ohshima, Tatsuya Sugita
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Publication number: 20070076142Abstract: In order to solve the problem that sufficient center brightness is not always obtained in a conventional liquid crystal TV and a liquid crystal monitor, a backlight module of the invention includes a plurality of cold cathode fluorescent lamps (CFL) and a diffusing reflector below, the distance between the respective CFLs is arranged so that a central portion is narrow and an end portion is wide, and the backlight module includes a triangular sectional projection structure on at the diffusing reflector only between the CFLs between which the distance is the widest, in the end portion. According to the invention, enhancement of the center brightness without increasing consumption power, reduction in the number of CFLs, and cost reduction accompanying it are achieved.Type: ApplicationFiled: September 27, 2006Publication date: April 5, 2007Inventors: Tetsuya Ohshima, Hitoshi Taniguchi, Takayuki Ota, Fumihiko Hieda, Naotoshi Sumiya
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Publication number: 20070053063Abstract: Provided is a display panel having a high-performance antireflection layer at a low cost. In a liquid crystal display panel or an organic light-emitting diode display panel constituted by a first transparent substrate, a second transparent substrate and a liquid crystal layer between these two transparent substrates further includes an antireflection layer on a portion which is at least one display area and a visible side (outer surface) by a viewer, and layers made of the same material as the antireflection layer formed on at least the opposite side (inside surface) of the surface of the portion corresponding to the display area and on three edge faces.Type: ApplicationFiled: August 28, 2006Publication date: March 8, 2007Inventors: Masaya Adachi, Makiko Sugibayashi, Tetsuya Ohshima, Shinichi Komura
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Publication number: 20070046874Abstract: A liquid crystal display device comprising a pair of substrates, a liquid crystal display panel having a liquid crystal layer positioned between the substrates, a transparent protective plate arranged on a front surface side of the display panel, and an optically transparent layer between the display panel and the protective plate, and wherein the protective plate includes fine concavity and convexity configurations on at least a surface thereof toward the display panel.Type: ApplicationFiled: August 11, 2006Publication date: March 1, 2007Inventors: Masaya Adachi, Makiko Sugibayashi, Tetsuya Ohshima, Katsumi Kondo, Hiroshi Sasaki
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Publication number: 20070002424Abstract: A display of an electrochromic type, including an active matrix substrate on which a plurality of pixel electrodes corresponding to pixels are arranged in a matrix form; a counter substrate which is provided with a transparent electrode that is common with respect to a plurality of the pixel electrodes; and an electrochromic material which is sandwiched between the active matrix substrate and the counter substrate, and is colored in a boundary either between itself and the pixel electrode or between itself and the transparent electrode; wherein the pixel electrode other than an electrode-exposed part which contacts with the electrochromic material is covered with a transparent protective film; and the electrode-exposed part has a different area from the area of the part onto which a current generated between the transparent electrode and the pixel electrode concentrates, out of the transparent electrode.Type: ApplicationFiled: July 3, 2006Publication date: January 4, 2007Inventors: Shoichi Hirota, Tetsuya Ohshima, Tatsuya Sugita
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Publication number: 20050012709Abstract: Each of first electrodes has a width smaller than the width of each of second electrodes in one direction on the plane of a display substrate. The second electrodes are applied with a voltage which is modulated independently on a pixel-by-pixel basis to move electrophoretic particles, thereby displaying an image.Type: ApplicationFiled: July 8, 2004Publication date: January 20, 2005Inventors: Tetsuya Ohshima, Hiroki Kaneko, Tatsuya Sugita
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Patent number: 6705730Abstract: It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. 1, a light valve 103 of a projector is located roughly at the focus point of an illumination lens 102. Further, as shown in FIG. 2, a light source 101 is also located roughly at the focus point of the illumination lens 102. Consequently, it is possible to implement a miniaturized projector.Type: GrantFiled: August 31, 2001Date of Patent: March 16, 2004Assignee: Hitachi, Ltd.Inventors: Tetsuya Ohshima, Hiroki Kaneko, Kazutaka Tsuji, Akira Arimoto, Osamu Ebina, Masahiko Yatsu
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Publication number: 20030020878Abstract: It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. 1, a light valve 103 of a projector is located roughly at the focus point of an illumination lens 102. Further, as shown in FIG. 2, a light source 101 is also located roughly at the focus point of the illumination lens 102. Consequently, it is possible to implement a miniaturized projector.Type: ApplicationFiled: August 31, 2001Publication date: January 30, 2003Inventors: Tetsuya Ohshima, Hiroki Kaneko, Kazutaka Tsuji, Akira Arimoto, Osamu Ebina, Masahiko Yatsu
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Patent number: 6081380Abstract: A directional reflection screen includes a corrugated mirror sheet constituted by a plurality of mirrors, and a lens sheet for diffusing and reflecting rays of light in the direction of ridge lines of the corrugated mirror sheet. The ridge lines of the corrugated mirror sheet intersect the lens lines of said lens sheet at angles other than 90.degree.. The projection display further includes projection means for projecting an image onto the directional reflection screen.Type: GrantFiled: March 5, 1999Date of Patent: June 27, 2000Assignee: Hitachi, Ltd.Inventors: Tetsuya Ohshima, Yoshiyuki Kaneko, Akira Arimoto, Hiroki Kaneko
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Patent number: 5488386Abstract: A photoconductive target having a transparent electrode layer and a photoconductive layer on a transparent substrate is disposed opposite to a group of integrated electron beam emitters having gate electrodes. A number of the electron emitters are activated to apply electron beams to the photoconductive target and the activated ones of the electron beam emitters are temporally changed over by an electron emitter selector circuit and a gate selector circuit. Signal charge generated and stored in the photoconductive layer is read. A time-series electric signal corresponding to a spatial distribution of the incident light is generated. A thin imaging apparatus suitable for a larger area is thus provided.Type: GrantFiled: December 2, 1993Date of Patent: January 30, 1996Assignee: Hitachi, Ltd. & Nippon Hoso KyokaiInventors: Toshio Yamagishi, Masakazu Nanba, Norifumi Egami, Kenkichi Tanioka, Mitsuhiro Kurashige, Kazutaka Tsuji, Yoshiyuki Kaneko, Tatsuo Makishima, Kazuyuki Nagatsuma, Tetsuya Ohshima, Yasushi Nakano
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Patent number: 4656113Abstract: A dye composition prepared by polymerizing an unsaturated monomer in the presence of a quinoneimine dye and an azo initiator in amounts expressed by x.gtoreq.5 and y.gtoreq.0.33x.sup.1.2 wherein x is the amount of the quinoneimine dye in % by weight based on the unsaturated monomer, and y is the amount of the azo initiator in % by weight based on the unsaturated monomer. The composition is useful for preparing toners for developing electrostatic images because of its outstanding charge control effect and also for preparing electrostatic coating powder compositions.Type: GrantFiled: September 19, 1985Date of Patent: April 7, 1987Assignees: Nippon Gosei Kagako Kogyo KK, Orient Chemical Industries, Ltd.Inventors: Tetsuya Ohshima, Hisashi Senshu, Takeshi Matsuyama, Yoji Kawagishi, Takuo Andoh, Takashi Kiryu