Patents by Inventor Seiichi Tsuchida
Seiichi Tsuchida 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: 7781973Abstract: A plasma display panel has plural discharge cells between two opposing first and second substrates. Each of the discharge cells includes at least one pair of electrodes for generating a discharge for display, a discharge gas and a phosphor film for emitting visible light by being excited by ultraviolet rays produced by the discharge of the discharge gas. Laminated members are dispersed in a plane within each of the discharge cells inside the first substrate from which visible light for display is emitted, and each of the laminated members includes a light absorption layer disposed on a side of the first substrate on which ambient light is incident and a light reflection layer disposed on a phosphor-film side of the laminated members. A visible-light-reflection layer is disposed on a surface of the phosphor film on a side thereof opposite from a space in which the discharge is generated.Type: GrantFiled: August 23, 2005Date of Patent: August 24, 2010Assignee: Hitachi, Ltd.Inventors: Tatsuya Miyake, Keizo Suzuki, Masatoshi Shiiki, Choichiro Okazaki, Tsuyoshi Fujita, Seiichi Tsuchida
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Patent number: 7183711Abstract: A plasma display panel includes plural discharge cells and a barrier rib layer which defines the discharge cells. Each discharge cells has two opposing electrodes on front and rear substrates, respectively, for generating discharge therebetween, discharge gas and phosphor films. The barrier rib layer is fabricated as a sheet separate from the substrates, is provided with openings each forming a discharge space, and is sandwiched between the substrates. The following relationships are satisfied: 0.1?S2/S1?0.4; 100 Torr ×mm?pd?400 Torr×mm; and 0.2 mm?d, where S1 is an area of a projection of a space occupied by one discharge cell onto the front substrate, S2 is an area of a portion of the front substrate for projecting light from the discharge cell, p is a pressure of the discharge gas, and d is a distance between the electrodes.Type: GrantFiled: January 27, 2005Date of Patent: February 27, 2007Assignee: Hitachi, Ltd.Inventors: Tatsuya Miyake, Keizo Suzuki, Masatoshi Shiiki, Tsuyoshi Fujita, Seiichi Tsuchida
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Publication number: 20070001602Abstract: A plasma display panel has plural discharge cells between two opposing first and second substrates. Each of the discharge cells includes at least one pair of electrodes for generating a discharge for display, a discharge gas and a phosphor film for emitting visible light by being excited by ultraviolet rays produced by the discharge of the discharge gas. Laminated members are dispersed in a plane within each of the discharge cells inside the first substrate from which visible light for display is emitted, and each of the laminated members includes a light absorption layer disposed on a side of the first substrate on which ambient light is incident and a light reflection layer disposed on a phosphor-film side of the laminated members. A visible-light-reflection layer is disposed on a surface of the phosphor film on a side thereof opposite from a space in which the discharge is generated.Type: ApplicationFiled: August 23, 2005Publication date: January 4, 2007Inventors: Tatsuya Miyake, Keizo Suzuki, Masatoshi Shiiki, Choichiro Okazaki, Tsuyoshi Fujita, Seiichi Tsuchida
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Publication number: 20060049757Abstract: A plasma display panel includes plural discharge cells and a barrier rib layer which defines the discharge cells. Each discharge cells has two opposing electrodes on front and rear substrates, respectively, for generating discharge therebetween, discharge gas and phosphor films. The barrier rib layer is fabricated as a sheet separate from the substrates, is provided with openings each forming a discharge space, and is sandwiched between the substrates. The following relationships are satisfied: 0.1?S2/S1?0.4; 100 Torr×mm?pd?400 Torr×mm; and 0.2 mm?d, where S1 is an area of a projection of a space occupied by one discharge cell onto the front substrate, S2 is an area of a portion of the front substrate for projecting light from the discharge cell, p is a pressure of the discharge gas, and d is a distance between the electrodes.Type: ApplicationFiled: January 27, 2005Publication date: March 9, 2006Inventors: Tatsuya Miyake, Keizo Suzuki, Masatoshi Shiiki, Tsuyoshi Fujita, Seiichi Tsuchida
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Patent number: 6864511Abstract: An optical transmission module with an optical device mounted in a substrate provided with an optical waveguide is provided wherein respective metallic electrodes in pair are symmetrically disposed in each side of an optical device divided by a centerline parallel to an optical axis such that those electrodes have an error of 60 ?m or less and said metallic electrodes are soldered to a metallic electrode as disposed on a substrate, which electrode has a size enough to cover those electrodes as disposed in the optical device.Type: GrantFiled: August 16, 2002Date of Patent: March 8, 2005Assignee: OpNext Japan, Inc.Inventors: Yoshio Oozeki, Kazumi Kawamoto, Seiichi Tsuchida
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Publication number: 20030152119Abstract: An optical transmission module with an optical device mounted in a substrate provided with an optical waveguide is provided wherein respective metallic electrodes in pair are symmetrically disposed in each side of an optical device divided by a centerline parallel to an optical axis such that those electrodes have an error of 60 &mgr;m or less and said metallic electrodes are soldered to a metallic electrode as disposed on a substrate, which electrode has a size enough to cover those electrodes as disposed in the optical device.Type: ApplicationFiled: August 16, 2002Publication date: August 14, 2003Applicant: OpNext Japan, Inc.Inventors: Yoshio Oozeki, Kazumi Kawamoto, Seiichi Tsuchida
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Patent number: 6281863Abstract: A plasma display panel driving system and method for a display panel having a first common electrode and first independent electrodes arranged at a back plate side, a second common electrode and second independent electrodes arranged at a face plate side, an inner partition positioned between the first common and independent electrodes at the back plate side and the second common and independent electrodes at the face plate side and having an aperture therein connecting a space at the back plate side and a space at the face plate side, and a fluorescent layer arranged in the space at the face plate side.Type: GrantFiled: November 6, 1996Date of Patent: August 28, 2001Assignee: Hitachi, Ltd.Inventors: Takashi Sasaki, Masaji Ishigaki, Norio Yatsuda, Yuji Sano, Hiroshi Ohtaka, Nobuyuki Ushifusa, Eiji Matsuzaki, Seiichi Tsuchida
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Patent number: 6199404Abstract: A manufacturing method for a gas discharge type display panel makes it possible to manufacture an environmentally friendly substrate with high accuracy and yet at low cost. According to the manufacturing methods electrodes are formed on a back substrate by photolithography or printing, then a glass paste is printed to a height of approximately 10 &mgr;m-500 &mgr;m by printing. A barrier rib blanks are produced by rolling under pressure the glass paste by using a roller provided with grooves. The roller is heated in advance. The barrier rib blanks are sintered into the barrier ribs.Type: GrantFiled: October 21, 1997Date of Patent: March 13, 2001Assignee: Hitachi, Ltd.Inventors: Michifumi Kawai, Ryohei Satoh, Masahito Ijuin, Tomohiko Murase, Takao Terabayashi, Nobuyuki Ushifusa, Yoshihiro Kato, Shigeaki Suzuki, Seiichi Tsuchida, Yutaka Naito, Seiichi Yasumoto, Osami Kaneto
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Patent number: 5939826Abstract: A plasma display panel for plasma display system provides excellent optical characteristics, including a color purity, contrast, and luminance, of a plasma display system. Barrier ribs forming a cell has wavelength-selective reflective filters for reflecting only a light of wavelength needed for display and absorbing the other lights coated thereon. The wavelength-selective reflective filters have phosphors coated thereon. A color filter is inserted between a first front panel and second front glass panel for feeding out the light in a sandwich state.Type: GrantFiled: October 26, 1995Date of Patent: August 17, 1999Assignee: Hitachi, Ltd.Inventors: Michitaka Ohsawa, Hiroshi Ohtaka, Keirou Shinkawa, Ken Hashimoto, Nobuyuki Ushifusa, Seiichi Tsuchida, Tatsuro Kawamura, Teruo Takai
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Patent number: 5939828Abstract: In order to reduce the address voltage in a gas discharge type display pane, the address electrodes in the display panel are formed on the barrier ribs. Further, a fluorescent layer is coated on the wall surface of the barrier ribs thereby suppressing erroneous light emission or degradation of the fluorescent layer during address discharge.Type: GrantFiled: August 5, 1997Date of Patent: August 17, 1999Assignee: Hitachi, Ltd.Inventors: Eiji Matsuzaki, Nobuyuki Ushifusa, Seiichi Tsuchida, Kazuo Suzuki, Teruo Takai, Kyoko Amemiya, Shiyuki Sakaue, Fusaji Shoji
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Patent number: 5900694Abstract: A gas discharge display panel in which opaque bus electrodes are structured in a frame shape for making each display cell clear as viewed from outside of the front substrate, and the bus electrodes function as a black matrix of the display screen. Hence the integrity of the black display status is improved and the contrast is increased.Type: GrantFiled: January 2, 1997Date of Patent: May 4, 1999Assignee: Hitachi, Ltd.Inventors: Eiji Matsuzaki, Nobuyuki Ushifusa, Seiichi Tsuchida, Teruo Takai
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Patent number: 5883462Abstract: A partition member for a gas discharge display panel having a front substrate with at least one main discharge electrode spaced from a back substrate having at least one auxiliary discharge electrode so as to delimit a gap therebetween. The partition member is adapted to extend substantially parallel to and between the front and back substrates for forming a main discharge space on a front substrate side and an auxiliary discharge space on a back substrate side, the partition member being a metal material member. A gas discharge display panel incorporates the partition member and a system is provided for driving the gas discharge display panel. Also, a manufacturing method is provided for the partition member and gas discharge display panel.Type: GrantFiled: December 30, 1996Date of Patent: March 16, 1999Assignee: Hitachi, Ltd.Inventors: Nobuyuki Ushifusa, Seiichi Tsuchida, Eiji Matsuzaki, Teruo Takai
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Patent number: 5818168Abstract: A gas discharge display panel which provides sufficient contrast and good accuracy and is high in yield. When a voltage is applied to auxiliary discharge electrodes, auxiliary discharge occurs in an auxiliary discharge space and excited charged particles communicate with a main discharge space through a priming path made in a discharge space separation bulkhead. In this state, when an alternating voltage is applied between bus electrodes on a front substrate, main discharge occurs in the main discharge space, causing Xe atoms in the sealed gas to generate ultraviolet rays, causing a phosphor to emit light. However, since the auxiliary discharge is shielded by a bulkhead and a barrier rib, the phosphor does not emit light when only auxiliary discharge occurs.Type: GrantFiled: September 7, 1995Date of Patent: October 6, 1998Assignee: Hitachi, Ltd.Inventors: Nobuyuki Ushifusa, Seiichi Tsuchida, Teruo Takai, Ken Hashimoto, Hiroshi Ohtaka, Michitaka Ohsawa, Eiji Matsuzaki, Masaji Ishigaki, Norio Yatsuda, Takashi Sasaki, Yuji Sano
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Patent number: 4822526Abstract: Disclosed is a process for preparing a liquid rosin ester which is light-colored and highly stable, characterized in that the process comprises subjecting to thermal reaction a rosin and an alcohol in the presence of anthraquinone and at least one alkali metal iodide selected from sodium iodide and potassium iodide.Type: GrantFiled: March 23, 1988Date of Patent: April 18, 1989Assignee: Arakawa Chemical Industries, Ltd.Inventors: Seiichi Tsuchida, Tsukasa Ishimoto
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Patent number: 4622357Abstract: A pressure-sensitive adhesive composition comprising a block rubber, a tackifying resin and a plasticizer as major components, the composition being characterized in that the tackifying resin is partially fumarized and/or partially maleinized, disproportionated rosin ester.Type: GrantFiled: March 8, 1985Date of Patent: November 11, 1986Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Seiichi Tsuchida, Yoshihiro Kodama, Hiroari Hara
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Patent number: 4618640Abstract: A hot-melt adhesive composition containing an ethylene copolymer, wax and a tackifying resin as major components, the composition being characterized in that the tackifying resin is partially fumarinized and/or partially maleinized, disproportionated rosin ester.Type: GrantFiled: March 20, 1985Date of Patent: October 21, 1986Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Seiichi Tsuchida, Yoshihiro Kodama, Hiroari Hara
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Patent number: 4302371Abstract: A process for preparing a stabilized rosin ester having a higher softening point which comprises subjecting a rosin to disproportionation and purification, and esterifying the resulting purified disproportionated rosin with a tri- or more valent polyhydric alcohol to give a rosin ester having a softening point (according to ring and ball method) of 65.degree. to 140.degree. C. The resulting rosin ester has superior heat resistance and aging resistance as well as a high softening point and is suitably employed as a tackifier for pressure-sensitive adhesive compositions and hot-melt compositions.Type: GrantFiled: July 17, 1980Date of Patent: November 24, 1981Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Kohtaro Matsuo, Seiichi Tsuchida
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Patent number: 4248770Abstract: A process for preparing a stabilized rosin ester having a higher softening point which comprises subjecting a rosin to disproportionation and purification, and esterifying the resulting purified disproportionated rosin with a tri- or more valent polyhydric alcohol to give a rosin ester having a softening point (according to ring and ball method) of 65.degree. to 140.degree. C. The resulting rosin ester has superior heat resistance and aging resistance as well as a high softening point and is suitably employed as a tackifier for pressure-sensitive adhesive compositions and hot-melt compositions.Type: GrantFiled: June 11, 1979Date of Patent: February 3, 1981Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Kohtaro Matsuo, Seiichi Tsuchida