Patents by Inventor Shigehiro Minezaki
Shigehiro Minezaki 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: 5191455Abstract: In a driving circuit for a liquid crystal apparatus, a DC offset voltage the level of which changes depending upon the level of input video signals is applied as an input video signal. The DC voltage which appears in the liquid crystal and the level of which changes depending upon the level of input video signals can be completely compensated.Type: GrantFiled: December 21, 1990Date of Patent: March 2, 1993Assignee: Sharp Kabushiki KaishaInventors: Ryuji Hashimoto, Shigeaki Mizushima, Eiichiro Nishimura, Shigehiro Minezaki, Toshio Takemoto
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Patent number: 5151298Abstract: A process for preparing an orientation film for liquid crystals which comprises forming a base layer of a thermoplastic or non-thermoplastic resin to be used for the orientation film, on a substrate for liquid crystal display, and rubbing the base layer under heating at a temperature not lower than 50.degree. C. but below the melting temperature of decomposition temperature of the resin.Type: GrantFiled: May 30, 1989Date of Patent: September 29, 1992Assignee: Sharp Kabushiki KaishaInventors: Akihiro Nammatsu, Mitsuo Ishii, Shigehiro Minezaki
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Patent number: 4690510Abstract: There is disclosed a structure of a matrix display unit having a matrix display panel with mutually perpendicular groups of signal and scaning electrodes and a wiring board mounting thereon a driver circuit having output terminals disposed on two marginal edges of the wiring board. At least one of the marginal edges is bent closely toward the matrix display panel. Terminal electrodes of one of the groups of the matrix electrodes are electrically connected to the bent marginal edge in confronting relation through an electrically conductive anisotropic member, terminal electrodes of the other group of the matrix electrodes are electrically connected to the other marginal edge through a bent electrically conductive anisotropy member or a flexible wiring sheet.Type: GrantFiled: December 2, 1985Date of Patent: September 1, 1987Assignee: Sharp Kabushiki KaishaInventors: Toshiaki Takamatsu, Hiroshi Kuwagaki, Shigehiro Minezaki, Kunihiko Yamamoto, Hiroshi Nakatani, Hisao Kawaguchi
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Patent number: 4528115Abstract: A liquid crystal composition comprising a mixed phase of the six kinds of the compounds such as ##STR1## and a liquid crystal display device of the multiplex drive type such as liquid crystal television device, which uses the above composition.Type: GrantFiled: May 2, 1983Date of Patent: July 9, 1985Assignee: Sharp Kabushiki KaishaInventors: Yutaka Ishii, Shigehiro Minezaki, Shuichi Kozaki, Fumiaki Funada
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Patent number: 4514253Abstract: A thin film transistor is disclosed which has an insulator substrate, a gate electrode, a semiconductor layer and a source/drain electrode disposed on the insulator substrate. The source/drain electrode is patterned through a combination of mask deposition technique and photo-lithography technique.Type: GrantFiled: July 25, 1983Date of Patent: April 30, 1985Assignee: Sharp Kabushiki KaishaInventor: Shigehiro Minezaki
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Patent number: 4478741Abstract: A liquid crystal composition contains a compound of the formula: ##STR1## wherein R and R' are straight chain alkyl groups each having 1 to 7 carbon atoms.Type: GrantFiled: April 29, 1983Date of Patent: October 23, 1984Assignee: Sharp Kabushiki KaishaInventors: Kenichi Nakagawa, Shigehiro Minezaki, Fumiaki Funada
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Patent number: 4426133Abstract: A twisted nematic liquid crystal is characterized in that the direction of longitudinal axes of liquid crystal molecules adjacent each of a pair of polarizers is deviated with respect to the orientation vector of each of the polarizers in order to improve display contrast ratio.Type: GrantFiled: December 23, 1980Date of Patent: January 17, 1984Assignee: Sharp Kabushiki KaishaInventors: Fumiaki Funada, Shigehiro Minezaki, Syuichi Kozaki, Hisashi Uede
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Patent number: 4422730Abstract: A liquid crystal display device comprises a pair of substrates, a first patterned layer formed on a part of one of the substrates, a second layer formed on the remaining part of the one of the substrates, the thickness of the second layer being substantially identical to that of the first patterned layer to provide a layer uniform in thickness, and a third layer formed on the uniform layer to provide orientation of molecules of a liquid crystal layer disposed between the pair of substrates. The uniform layer is manufactured by the steps of forming the first patterned layer on part of the one of the substrates, and forming the second layer on the remaining part of the one of the substrates, using a lift-off method.Type: GrantFiled: October 16, 1980Date of Patent: December 27, 1983Assignee: Sharp Kabushiki KaishaInventors: Shuichi Kozaki, Fumiaki Funada, Shigehiro Minezaki, Hisashi Uede
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Patent number: 4411981Abstract: A method for Te pattern formation in the manufacture of a thin-film transistor having a semiconductor layer of Te. Developing and etching of the substrate having the Te layer and a resist layer overlaying the Te layer are simultaneously carried out by the use of a developing and etching solution after having been exposed to rays of UV-light.Type: GrantFiled: February 25, 1981Date of Patent: October 25, 1983Assignee: Sharp Kabushiki KaishaInventor: Shigehiro Minezaki
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Patent number: 4408837Abstract: A liquid crystal cell comprising a pair of opposing supports one carrying a patterned electrode and the other carrying a counter electrode placed vis-a-vis with the patterned electrode and a liquid crystal material sandwiched between the two electrodes, wherein at least the patterned electrode comprises an In.sub.2 O.sub.3 coating and a remaining portion of the support where the In.sub.2 O.sub.3 coating is not disposed comprises a CeO.sub.2 coating whose refractive index is substantially equal to that of the In.sub.2 O.sub.3 coating.Type: GrantFiled: June 26, 1981Date of Patent: October 11, 1983Assignee: Sharp Kabushiki KaishaInventors: Syuichi Kozaki, Fumiaki Funada, Shigehiro Minezaki
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Patent number: 4326929Abstract: A method is disclosed for forming an electrode pattern which is free of erosion, separation of a wiring pattern from a substrate, etc., through the use of a lift-up method, which comprises the steps of: etching a transparent, electrically conductive film deposited on a major surface of the substrate for the formation of the transparent electrode pattern; overlaying the whole of the major surface of the substrate with a layer of photoresist; removing a portion of said photoresist layer in the metal electrode pattern; coating substantially the entire major surface of the substrate with a layer of metal electrode material; and removing the remaining photoresist layer with the aid of a resist remover thereby forming the metal electrode pattern.Type: GrantFiled: October 3, 1979Date of Patent: April 27, 1982Assignee: Sharp Kabushiki KaishaInventors: Shigehiro Minezaki, Toshiaki Takamatsu, Shuichi Kozaki
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Patent number: 4309814Abstract: A method for making a multi-layered liquid crystal display panel is provided herein. More particularly, the method enables double-sided rubbing on at least one of a plurality of stacked glass supports and avoids possible flaws in a rubbed surface through the utilization of a protective coating covering the rubbed surface, thus providing liquid crystal display panels with excellent image quality. The protective coating is of sufficient mechanical strength and easily removable by means of a remover.Type: GrantFiled: January 18, 1980Date of Patent: January 12, 1982Assignee: Sharp Kabushiki KaishaInventors: Toshiaki Takamatsu, Shigehiro Minezaki, Masataka Matsuura, Hisashi Uede
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Patent number: 4299450Abstract: An elastomer display system comprising a transparent silicon elastomer and electrodes for establishing a nonuniform electric field in the transparent silicon elastomer. Organic fluorescent centers are disposed within the transparent silicon elastomer. The electrodes are shaped in a desired configuration to ensure creation of the frost deformation in the transparent silicon elastomer when a predetermined voltage signal is applied to the electrodes. The frost deformation functions as a scattering center for the fluorescence derived from the organic fluorescent centers, thereby displaying a desired pattern.Type: GrantFiled: August 14, 1979Date of Patent: November 10, 1981Assignee: Sharp Kabushiki KaishaInventors: Fumiaki Funada, Toshiaki Takamatsu, Shigehiro Minezaki