Patents by Inventor Yuichi Akiba
Yuichi Akiba 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: 20240079492Abstract: A semiconductor device includes a second deep layer between a first deep layer and first current distribution layer and a base region in an active region and in a part of an inactive region adjacent to the active region. The second deep layer has a second stripe portion including lines connecting to the base region and the first deep layer. The semiconductor device further includes a second current distribution layer between the first current distribution layer and the base region and arranged between the lines of the second stripe portion. The first deep layer has a first stripe portion including a plurality of lines, and each line has an end portion connecting to a frame-shaped portion and an inner portion on an inner side of the end portion. The width of the end portion is equal to or greater than the inner portion.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: Atsuya AKIBA, Yuichi TAKEUCHI, Kazuki ARAKAWA, Yusuke HAYAMA, Yasushi URAKAMI, Shinichiro MIYAHARA, Tomoo MORINO
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Patent number: 8711264Abstract: The invention is directed to the provision of a display panel in which, while providing a sufficient gap between two electrodes, the gap is made not easily visible. The display panel according to the invention includes: a first substrate having a first electrode and a second electrode formed on one and the same side thereof; a second substrate disposed opposite the first substrate; a gap formed between the first electrode and the second electrode; a backup electrode formed on the first substrate so as to overlap the gap; and a wiring electrode electrically connected to the first or second electrode, wherein the wiring electrode is formed in the same plane as the backup electrode.Type: GrantFiled: March 24, 2009Date of Patent: April 29, 2014Assignee: Citizen Holdings Co., Ltd.Inventors: Yuichi Akiba, Kazutoshi Muramatsu
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Publication number: 20110019061Abstract: The invention is directed to the provision of a display panel in which, while providing a sufficient gap between two electrodes, the gap is made not easily visible. The display panel according to the invention includes: a first substrate having a first electrode and a second electrode formed on one and the same side thereof; a second substrate disposed opposite the first substrate; a gap formed between the first electrode and the second electrode; a backup electrode formed on the first substrate so as to overlap the gap; and a wiring electrode electrically connected to the first or second electrode, wherein the wiring electrode is formed in the same plane as the backup electrode.Type: ApplicationFiled: March 24, 2009Publication date: January 27, 2011Applicant: Citizen Holdings Co., Ltd.Inventors: Yuichi Akiba, Kazutoshi Muramatsu
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Patent number: 7859615Abstract: In a display apparatus that has a polymer dispersed liquid crystal material 25 encapsulated in a gap between a completed first substrate 1 and a completed second substrate 11 by using a sealing member 26 and has a display region M and a peripheral region N in a region where the polymer dispersed liquid crystal material 25 is encapsulated, a wiring electrode 19 having light shielding properties is provided in at least a part of the peripheral region N of the completed second substrate 11, and an ultraviolet ray transmitting portion 19a that transmits an ultraviolet ray therethrough is provided in the peripheral region where the wiring electrode 19 is provided. An ultraviolet ray is applied from the substrate side where the ultraviolet ray transmitting portion 19a is provided to polymerize a monomer in the peripheral region N. The ultraviolet ray transmitting portion is formed of, e.g., a plurality of small holes, and the small holes are dispersedly arranged at equal intervals.Type: GrantFiled: March 13, 2007Date of Patent: December 28, 2010Assignee: Citizen Holdings Co., Ltd.Inventors: Koichi Hoshino, Yuichi Akiba, Sachiko Kawada, Takashi Akiyama
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Publication number: 20070216830Abstract: In a display apparatus that has a polymer dispersed liquid crystal material 25 encapsulated in a gap between a completed first substrate 1 and a completed second substrate 11 by using a sealing member 26 and has a display region M and a peripheral region N in a region where the polymer dispersed liquid crystal material 25 is encapsulated, a wiring electrode 19 having light shielding properties is provided in at least a part of the peripheral region N of the completed second substrate 11, and an ultraviolet ray transmitting portion 19a that transmits an ultraviolet ray therethrough is provided in the peripheral region where the wiring electrode 19 is provided. An ultraviolet ray is applied from the substrate side where the ultraviolet ray transmitting portion 19a is provided to polymerize a monomer in the peripheral region N. The ultraviolet ray transmitting portion is formed of, e.g., a plurality of small holes, and the small holes are dispersedly arranged at equal intervals.Type: ApplicationFiled: March 13, 2007Publication date: September 20, 2007Applicant: CITIZEN WATCH CO., LTD.Inventors: Koichi Hoshino, Yuichi Akiba, Sachiko Kawada, Takashi Akiyama
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Patent number: 7136138Abstract: A timepiece provided with a liquid crystal display panel (9) for displaying thereon at least one of time information (5) and calendar information (4), wherein a solar battery unit (12) is provided to face at least a part of a visual recognition side surface of the liquid crystal display panel (9) or an opposite-side (lower-side) surface thereof, the light being applied to a power generation portion of the solar battery unit (12) through a transmission portion of the liquid crystal display panel (9) to generate electric power or what is displayed on the liquid crystal display panel (9) being visually recognized through a transmission portion of the solar battery unit (12), a timepiece circuit and the liquid crystal display panel (9) being driven by utilizing the electric power generated by the solar battery unit (12).Type: GrantFiled: April 20, 1999Date of Patent: November 14, 2006Assignee: Citizen Watch Co., Ltd.Inventors: Kanetaka Sekiguchi, Katsumi Aota, Kozo Miyoshi, Yuichi Akiba
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Patent number: 6937301Abstract: A watch unit having a time-displaying section, including a reflection-type polarizing film 14 disposed on an upper portion or a lower portion of the time-displaying section or a portion comprising a part of the time-displaying section, an optical modulation section which varies the ratio of a transmission axis to a reflection axis of the reflection-type polarizing film 14, and a shutter function to shield a portion of or all of the watch unit having the time-display section by varying the reflection intensity and the transmission intensity in relation to the light incident direction using the reflection-type polarinzing film 14 and the optical modulation section, to enhance the appearance and to improve the versatility of the watch unit.Type: GrantFiled: April 16, 2002Date of Patent: August 30, 2005Assignee: Citizen Watch Co., Ltd.Inventors: Kanetaka Sekiguchi, Masafumi Ide, Takashi Akiyama, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Koichi Hoshino, Takashi Toida
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Patent number: 6646697Abstract: A liquid crystal display device is structured in such a manner that plural of liquid crystal display panels each comprised of a liquid crystal layer provided between a pair of transparent substrates which have electrodes disposed on each facing inner surface, and a reflection-type polarizing film is disposed at least on the top surface of the plural liquid crystal display panel, or between the liquid crystal display panels, or on the lowest surface of the plural liquid crystal display panel. By controlling a reflection state and a transmission state through the reflection-type polarizing film with electric voltage applied on the liquid crystal layer of the liquid crystal display panel, a display which represents the opening and closing of a metallic shutter is made possible.Type: GrantFiled: March 17, 1999Date of Patent: November 11, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Kanetaka Sekiguchi, Takashi Akiyama, Masafumi Ide, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Koichi Hoshino, Takashi Toida
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Patent number: 6643224Abstract: A timepiece, in which a first liquid crystal display panel and a second liquid crystal display panel, each of which is constituted by sealing a liquid crystal layer in a gap between a pair of substrates formed with electrodes on opposed inner faces thereof respectively, are arranged in a case body having a cover glass with at least portions thereof overlapping, a first polarizing film is provided on an upper substrate of the first liquid crystal display panel on the cover glass side, a second polarizing film is provided between the first liquid crystal display panel and the second liquid crystal display panel, and a third polarizing film is provided on the lower side of a lower substrate of the second liquid crystal display panel respectively, the second polarizing film being a reflection type polarizing film, the first polarizing film, the first liquid crystal display panel, and the second polarizing film constitutes an upper display portion, and the second polarizing film, the second liquid crystal displayType: GrantFiled: November 2, 2000Date of Patent: November 4, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Kanetaka Sekiguchi, Masafumi Ide, Takashi Akiyama, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa
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Patent number: 6580479Abstract: A watch unit having a time-displaying section, including a reflection-type polarizing film 14 disposed on an upper portion or a lower portion of the time-displaying section or a portion comprising a part of the time-displaying section, an optical modulation section which varies the ratio of a transmission axis to a reflection axis of the reflection-type polarizing film 14, and a shutter function to shield a portion of or all of the watch unit having the time-display section by varying the reflection intensity and the transmission intensity in relation to the light incident direction using the reflection-type polarinzing film 14 and the optical modulation section, to enhance the appearance and to improve the versatility of the watch unit.Type: GrantFiled: March 15, 1999Date of Patent: June 17, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Kanetaka Sekiguchi, Masafumi Ide, Takashi Akiyama, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Koichi Hoshino, Takashi Toida
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Patent number: 6577360Abstract: The liquid crystal display device comprises a liquid crystal cell with liquid crystals sealed thereinbetween, sandwiched between two transparent substrates having an electrode on each of the inner surfaces thereof facing each other, an absorption-type polarizing film disposed on the visible side of the liquid crystal cell, a reflection-type polarizing film disposed on the side of the liquid crystal cell, opposite from the visible side. The absorption-type polarizing film is a polarizing sheet absorbing a light linearly polarized in the direction orthogonal to the transmission axis thereof while the reflection-type polarizing film is a polarizing sheet reflecting a light linearly polarized in the direction orthogonal to the transmission axis thereof. A light reflection film or a color filter may preferably be disposed under the reflection-type polarizing film. Further, a light diffusing layer or a light diffusing film may preferably be disposed on the visible side of the absorption-type polarizing film.Type: GrantFiled: April 27, 2000Date of Patent: June 10, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Takashi Akiyama, Masafuni Ide, Kanetaka Sekiguchi, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Koichi Hoshino, Takashi Toida
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Publication number: 20020109808Abstract: A watch unit having a time-displaying section, including a reflection-type polarizing film 14 disposed on an upper portion or a lower portion of the time-displaying section or a portion comprising a part of the time-displaying section, an optical modulation section which varies the ratio of a transmission axis to a reflection axis of the reflection-type polarizing film 14, and a shutter function to shield a portion of or all of the watch unit having the time-display section by varying the reflection intensity and the transmission intensity in relation to the light incident direction using the reflection-type polarinzing film 14 and the optical modulation section, to enhance the appearance and to improve the versatility of the watch unit.Type: ApplicationFiled: April 16, 2002Publication date: August 15, 2002Applicant: CITIZEN WATCH CO., LTD.Inventors: Kanetaka Sekiguchi, Masafumi Ide, Takashi Akiyama, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Koichi Hoshino, Takashi Toida
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Patent number: 6351297Abstract: A timepiece according to the invention is provided with a liquid crystal display panel capable of displaying at least either of time information or calendar information, and the liquid crystal display panel comprises a liquid crystal cell with liquid crystals sealed thereinbetween, sandwiched between two transparent substrates having an electrode on each of inner surfaces thereof facing each other, polarizing sheets disposed on the external surface of the respective substrates, and a light absorption film disposed on the side of one of the polarizing sheets opposite from the liquid crystal cell. For each of the polarizing sheets, a sheet reflecting the light linearly polarized in the direction orthogonal to the transmission axis thereof is used so that either of a background or a display segment is displayed in a metallic color while the other is displayed in the color of the light absorption film.Type: GrantFiled: February 25, 1999Date of Patent: February 26, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Masafumi Ide, Takashi Akiyama, Kanetaka Sekiguchi, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Takashi Toida
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Patent number: 6292439Abstract: A timepiece is provided with a liquid crystal display panel (10) capable of displaying at least either of time information and calendar information, and comprising a liquid crystal cell having a liquid crystal layer sealed in between a pair of transparent substrates, having an electrode on each of the inner surfaces thereof, facing each other, an absorption-type polarizing film disposed on the visible side of the liquid crystal cell, for absorbing the light linearly polarized in the direction orthogonal to the transmission axis thereof, a reflection-type polarizing film disposed on the side of the liquid crystal cell opposite from the visible side thereof for reflecting the light linearly polarized in the direction orthogonal to the transmission axis thereof, and a color filter disposed on the visible side of the absorption-type polarizing film, or between the absorption-type polarizing film and the reflection-type polarizing film.Type: GrantFiled: March 26, 1999Date of Patent: September 18, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Yuichi Akiba, Masafumi Ide, Takashi Akiyama, Kanetaka Sekiguchi, Masami Kikuchi, Koji Nakagawa
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Patent number: 6271050Abstract: A method of manufacturing a thin film diode incorporated in a liquid crystal display, comprising a lower electrode connected with a signal electrode, an anodic oxidation film formed on the surface of the lower electrode, and an upper electrode formed so as to overlie the lower electrode via the anodic oxidation film and connected with a pixel electrode.Type: GrantFiled: November 29, 1999Date of Patent: August 7, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Yuichi Akiba, Masafumi Ide
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Patent number: 6271901Abstract: The liquid crystal display device comprises a liquid crystal cell with liquid crystals sealed thereinbetween, sandwiched between two transparent substrates having an electrode on each of the inner surfaces thereof facing each other, a first reflective polarizing film disposed on the visible side of the liquid crystal cell, a second reflective polarizing film disposed on the side of the liquid crystal cell, opposite from the visible side, and a light absorption film disposed on the side of the second reflective polarizing film, opposite from the visible side. The first reflective polarizing film as well as the second reflective polarizing film is a polarizing sheet reflecting a light linearly polarized in the direction orthogonal to the transmission axis thereof. A light absorption film and/or a backlight may preferably be disposed under the second reflective polarizing film.Type: GrantFiled: March 11, 1999Date of Patent: August 7, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Masafumi Ide, Takashi Akiyama, Kanetaka Sekiguchi, Masami Kikuchi, Yuichi Akiba, Koji Nakagawa, Takashi Toida
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Patent number: 6040201Abstract: A method of manufacturing a thin film diode incorporated in a liquid crystal display, comprising a lower electrode connected with a signal electrode, an anodic oxidation film formed on the surface of the lower electrode, and an upper electrode formed so as to overlie the lower electrode via the anodic oxidation film and connected with a pixel electrode.Type: GrantFiled: September 15, 1997Date of Patent: March 21, 2000Assignee: Citizen Watch Co., Ltd.Inventors: Yuichi Akiba, Masafumi Ide
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Patent number: 4673596Abstract: In the production of a decorative sheet, a synthetic resin paste is first applied onto the upper surface of a substrate sheet to form an undercoat layer. Then, one or more pastes, each being of the same material and having approximately the same viscosity as the paste of the undercoat layer, are laterally sprayed so as to drop onto the undercoat layer. The result is a smoothing phenomenon, with the pattern layer cooperating with the undercoat layer to form a smooth patterned surface. Finally, the pattern layer is heated and jelled.Type: GrantFiled: September 13, 1985Date of Patent: June 16, 1987Assignee: Lonseal CorporationInventors: Toru Shoji, Mitsuru Sugiyama, Makoto Takezawa, Yuichi Akiba, Akira Kaneko, Mituo Sato
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Patent number: 4360558Abstract: A method for making a vinyl chloride resin sheet having a raised pattern thereon. The method comprises the steps of providing an open-celled vinyl chloride resin sheet and printing a portion of the sheet with a composition comprising a cross-linkable compound in accordance with the pattern to be formed. The printed sheet is then dried and subsequently heated to a temperature higher than its softening temperature whereby the open-celled unprinted portion of the sheet is depressed and whereby the printed pattern remains open-celled and stands in relief with respect to the depressed portion.Type: GrantFiled: April 13, 1981Date of Patent: November 23, 1982Assignee: Lonseal CorporationInventors: Nobuo Miura, Yuichi Akiba
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Patent number: 4281039Abstract: A method for making a vinyl chloride resin sheet having a raised pattern thereon. The method comprises the steps of providing an open-celled vinyl chloride resin sheet and printing a portion of the sheet with a composition comprising a cross-linkable compound in accordance with the pattern to be formed. The printed sheet is then dried and subsequently heated to a temperature higher than its softening temperature whereby the open-celled unprinted portion of the sheet is depressed and whereby the printed pattern remains open-celled and stands in relief with respect to the depressed portion.Type: GrantFiled: October 4, 1979Date of Patent: July 28, 1981Assignee: Lonseal CorporationInventors: Nobuo Miura, Yuichi Akiba