Patents by Inventor Kiichi Shimodaira
Kiichi Shimodaira 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: 7773174Abstract: A wide viewing angle compensation polarizing plate of the invention comprises a laminate comprising an optical film (1) that is formed of an obliquely oriented material exhibiting optically-negative uniaxiality, an anisotropic light-scattering film (2) and a polarizer (3). The wide viewing angle compensation polarizing plate can widen viewing angle characteristics both in the lateral and vertical directions with respect to the direction of the normal to the screen when used in liquid crystal displays.Type: GrantFiled: May 24, 2005Date of Patent: August 10, 2010Assignee: Nitto Denko CorporationInventors: Kiichi Shimodaira, Hiroyuki Okada, Tatsuya Oosuka, Yuuichi Nishikouji
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Patent number: 7714976Abstract: An optical resin sheet includes a cured resin layer containing glass fiber, wherein the ratio of the elastic modulus of the glass fiber to the elastic modulus of a cured resin material, which forms the cured resin layer, is 25 or more. With the thus arranged optical resin sheet, stress is applied to the glass fiber, thereby reducing the phenomenon of occurrence of birefringence, and when it is applied to a display device, there is achieved a significantly small light leakage in an oblique direction. The optical resin sheet is capable of achieving excellent display quality of an image display device such as a liquid crystal display device, as well as keeping the coefficient of thermal expansion lower and the mechanical strength higher.Type: GrantFiled: August 31, 2004Date of Patent: May 11, 2010Assignee: Nitto Denko CorporationInventors: Kiichi Shimodaira, Yoshimasa Sakata, Yuuzou Akada, Tadaaki Harada
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Publication number: 20090015781Abstract: An optical resin sheet includes a cured resin layer containing glass fiber, wherein the ratio of the elastic modulus of the glass fiber to the elastic modulus of a cured resin material, which forms the cured resin layer, is 25 or more. With the thus arranged optical resin sheet, stress is applied to the glass fiber, thereby reducing the phenomenon of occurrence of birefringence, and when it is applied to a display device, there is achieved a significantly small light leakage in an oblique direction. The optical resin sheet is capable of achieving excellent display quality of an image display device such as a liquid crystal display device, as well as keeping the coefficient of thermal expansion lower and the mechanical strength higher.Type: ApplicationFiled: August 31, 2004Publication date: January 15, 2009Applicant: NITTO DENKO CORPORATIONInventors: Kiichi Shimodaira, Yoshimasa Sakata, Yuuzou Akada, Tadaaki Harada
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Publication number: 20080303995Abstract: A wide viewing angle compensation polarizing plate of the invention comprises a laminate comprising an optical film (1) that is formed of an obliquely oriented material exhibiting optically-negative uniaxiality, an anisotropic light-scattering film (2) and a polarizer (3). The wide viewing angle compensation polarizing plate can widen viewing angle characteristics both in the lateral and vertical directions with respect to the direction of the normal to the screen when used in liquid crystal displays.Type: ApplicationFiled: May 24, 2005Publication date: December 11, 2008Applicant: NITTO DENKO CORPORATIONInventors: Kiichi Shimodaira, Hiroyuki Okada, Tatsuya Oosuka, Yuuichi Nishikouji
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Patent number: 7081941Abstract: There is provided a liquid-crystal display device has at least a liquid-crystal panel which is constituted by a back side substrate having a colored resin substrate with an electrode, a visual side transparent substrate having a transparent electrode, and a reflection type liquid-crystal layer interposed between the visual side substrate and the back side substrate. There is provided a colored resin substrate formed of at least a mixture of a transparent resin and a pigment.Type: GrantFiled: February 14, 2001Date of Patent: July 25, 2006Assignee: Nitto Denko CorporationInventors: Seiji Umemoto, Kiichi Shimodaira
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Patent number: 6982432Abstract: A touch type liquid-crystal display device has a liquid-crystal display panel having flexibility, a touch panel provided to adhere closely to a back side, opposite to a visual side, of the liquid-crystal display panel, and electrodes disposed to be opposite to each other through a gap. The electrodes are capable of coming into partial contact with each other by a pressing force to thereby detect an input position.Type: GrantFiled: April 17, 2001Date of Patent: January 3, 2006Assignee: Nitto Denko CorporationInventors: Seiji Umemoto, Tomonori Noguchi, Tadayuki Kameyama, Kiichi Shimodaira, Hideo Sugawara, Hidehiko Andou
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Patent number: 6942906Abstract: A resin sheet containing dispersed particles which is thin and lightweight, and has excellent mechanical strength and light-diffusing properties. The resin sheets may be used in liquid crystal displays. A resin sheet having a hard coat layer, an epoxy resin layer containing 100 parts by weight of the resin to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter from 0.2 to 100 ?m, and a thin metal layer as a reflecting layer, wherein the diffuser localizes so as to have a concentration distribution in the direction of the thickness of the epoxy resin layer. A resin sheet having dispersed particles which is obtained by superposing a reflecting layer, an inorganic gas barrier layer, or a color filter layer thereon. A process for producing the resin sheet having a color filter layer.Type: GrantFiled: November 6, 2003Date of Patent: September 13, 2005Assignee: Nitto Denko CorporationInventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
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Patent number: 6936313Abstract: A resin sheet containing dispersed particles which is thin, lightweight, and has excellent mechanical strength and light-diffusing properties. The resin sheets may be used in liquid crystal displays. A resin sheet having a hard coat layer, an epoxy resin layer containing 100 parts by weight of the resin to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter from 0.2 to 100 ?m, and a thin metal layer as a reflecting layer, wherein the diffuser localizes so as to have a concentration distribution in the direction of the thickness of the epoxy resin layer. A resin sheet having dispersed particles which is obtained by superposing a reflecting layer, an inorganic gas barrier layer, or a color filter layer thereon. A process for producing the resin sheet having a color filter layer.Type: GrantFiled: March 5, 2002Date of Patent: August 30, 2005Assignee: Nitto Denko CorporationInventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
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Patent number: 6891589Abstract: A laminated optical film including an optical film (1) whose three dimensional refractive index is controlled so that an Nz coefficient represented with Nz=(nx1?nz1)/(nx1?ny1) satisfies a relationship of Nz?0.9, when a direction where a refractive index in a film plane gives maximum is defined as X-axis, a direction perpendicular to X-axis as Y-axis, a thickness direction of the film as Z-axis, and refractive indexes in each axial direction are defined as nx1, ny1, and nz1, respectively, and an optical film (2) that is formed with a material showing optically negative uniaxial property, and being tilting aligned. The laminated optical film may suppress coloring of the display, and may display a picture with few tone reversal regions.Type: GrantFiled: December 12, 2003Date of Patent: May 10, 2005Assignee: Nitto Denko CorporationInventors: Masahiro Hata, Hiroyuki Okada, Kiichi Shimodaira
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Patent number: 6818263Abstract: A resin sheet which comprises a base layer containing particles dispersed therein and hence has excellent dimensional stability; a resin sheet which comprises a base layer containing particles dispersed therein and hence has excellent light diffusion properties; resin sheets which comprise either of those resin sheets containing dispersed particles and a reflecting layer, inorganic gas barrier layer, and color filter layer respectively superposed thereon; and a liquid crystal display using any of these resin sheets containing dispersed particles. Some of the resin sheets containing dispersed particles comprise a base layer comprising a thermoplastic resin or thermoset resin and dispersed therein an inorganic oxide having an average particle diameter of 1 to 100 nm, the amount of the inorganic oxide being 0.1 to 23% by weight based on the weight of the base layer.Type: GrantFiled: May 31, 2001Date of Patent: November 16, 2004Assignee: Nitto Denko CorporationInventors: Kiichi Shimodaira, Toshiyuki Umehara, Nobuyoshi Yagi, Yoshimasa Sakata, Yoshihiro Kitamura, Katsuhiro Nakano
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Publication number: 20040119922Abstract: A laminated optical film including an optical film (1) whose three dimensional refractive index is controlled so that an Nz coefficient represented with Nz=(nx1−nz1)/(nx1−ny1) satisfies a relationship of Nz≦0.9, when a direction where a refractive index in a film plane gives maximum is defined as X-axis, a direction perpendicular to X-axis as Y-axis, a thickness direction of the film as Z-axis, and refractive indexes in each axial direction are defined as nx1, ny1, and nz1, respectively, and an optical film (2) that is formed with a material showing optically negative uniaxial property, and being tilting aligned.Type: ApplicationFiled: December 12, 2003Publication date: June 24, 2004Applicant: NITTO DENKO CORPORATIONInventors: Masahiro Hata, Hiroyuki Okada, Kiichi Shimodaira
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Publication number: 20040121087Abstract: A resin sheet which has abase layer containing particles dispersed therein, is thin and lightweight, and has excellent mechanical strength and light-diffusing properties; a resin sheet containing dispersed particles which is obtained by superposing a reflecting layer or an inorganic gas barrier layer on that resin sheet; a resin sheet containing dispersed particles which is obtained by superposing a color filter layer on that resin sheet; processes for producing the resin sheet having a color filer layer; and liquid crystal displays employing those resin sheets. One of those resin sheets has a hard coat layer, an epoxy resin layer containing, per 100 parts by weight of the resin, up to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter of from 0.Type: ApplicationFiled: November 6, 2003Publication date: June 24, 2004Applicant: NITTO DENKO CORPORATIONInventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
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Patent number: 6710840Abstract: A liquid crystal display device having a resin substrate wherein a transparent resin plate has at least a conductive layer via a transparent layer with a lower refractive index than the resin plate, and a liquid crystal display panel including at least a liquid crystal cell with a liquid crystal carried between a visible side substrate and a back side substrate that are disposed with electrodes on their substrates opposed to one another. One or both of the visible side substrate and the back side substrate is or are the resin substrate.Type: GrantFiled: June 20, 2001Date of Patent: March 23, 2004Assignee: Nitto Denko CorporationInventors: Seiji Umemoto, Yoshimasa Sakata, Kiichi Shimodaira, Nobuyoshi Yagi
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Publication number: 20020160127Abstract: A resin sheet which has a base layer containing particles dispersed therein, is thin and lightweight, and has excellent mechanical strength and light-diffusing properties; a resin sheet containing dispersed particles which is obtained by superposing a reflecting layer or an inorganic gas barrier layer on that resin sheet; a resin sheet containing dispersed particles which is obtained by superposing a color filter layer on that resin sheet; processes for producing the resin sheet having a color filer layer; and liquid crystal displays employing those resin sheets. One of those resin sheets has a hard coat layer, an epoxy resin layer containing, per 100 parts by weight of the resin, up to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter of from 0.Type: ApplicationFiled: March 5, 2002Publication date: October 31, 2002Inventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
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Publication number: 20020102367Abstract: A resin sheet which comprises a base layer containing particles dispersed therein and hence has excellent dimensional stability; a resin sheet which comprises a base layer containing particles dispersed therein and hence has excellent light diffusion properties; resin sheets which comprise either of those resin sheets containing dispersed particles and a reflecting layer, inorganic gas barrier layer, and color filter layer respectively superposed thereon; and a liquid crystal display using any of these resin sheets containing dispersed particles.Type: ApplicationFiled: May 31, 2001Publication date: August 1, 2002Inventors: Kiichi Shimodaira, Toshiyuki Umehara, Nobuyoshi Yagi, Yoshimasa Sakata, Yoshihiro Kitamura, Katsuhiro Nakano
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Publication number: 20020018864Abstract: A liquid crystal display device having a resin substrate wherein a transparent resin plate has at least a conductive layer via a transparent layer with a lower refractive index than the resin plate, and a liquid crystal display panel including at least a liquid crystal cell with a liquid crystal carried between a visible side substrate and a back side substrate that are disposed with electrodes on their substrates opposed to one another. One or both of the visible side substrate and the back side substrate is or are the resin substrate.Type: ApplicationFiled: June 20, 2001Publication date: February 14, 2002Applicant: NITTO DENKO CORPORATIONInventors: Seiji Umemoto, Yoshimasa Sakata, Kiichi Shimodaira, Nobuyoshi Yagi
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Patent number: 6331882Abstract: An optical member is made from an optical material either one of or each of two surfaces of which is coated with a pressure sensitive adhesion layer having a 1000% elastic modulus in a range of from 3 g/mm2 to 10 g/mm2 at 90° C. The optical member exhibits characteristic in which the quantity of curl is not larger than 3 mm per 12 inches when the optical member adhesively bonded to a resin substrate through the pressure sensitive adhesion layer is heated at 80° C. for 150 hours. A cell substrate comprises a resin substrate having a curl quantity of not larger than 3 mm per 12 inches when an optical member is heated at 80° C. for 150 hours after the optical member is adhesively bonded to the resin substrate through the pressure sensitive adhesion layer. A liquid-crystal display wherein an optical member is adhesively bonded, through a pressure sensitive adhesion layer of the optical member, to either one of or each of two surfaces of a liquid-crystal cell is formed by use of the cell substrate.Type: GrantFiled: November 10, 1999Date of Patent: December 18, 2001Assignee: Nitto Denko CorporationInventors: Kiichi Shimodaira, Masayuki Satake
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Publication number: 20010030724Abstract: There is provided a liquid-crystal display device has at least a liquid-crystal panel which is constituted by a back side substrate having a colored resin substrate with an electrode, a visual side transparent substrate having a transparent electrode, and a reflection type liquid-crystal layer interposed between the visual side substrate and the back side substrate. There is provided a colored resin substrate formed of at least a mixture of a transparent resin and a pigment.Type: ApplicationFiled: February 14, 2001Publication date: October 18, 2001Inventors: Seiji Umemoto, Kiichi Shimodaira
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Publication number: 20010022632Abstract: A touch type liquid-crystal display device has a liquid-crystal display panel having flexibility, a touch panel provided to adhere closely to a back side, opposite to a visual side, of the liquid-crystal display panel, and electrodes disposed to be opposite to each other through a gap. The electrodes are capable of coming into partial contact with each other by a pressing force to thereby detect an input position.Type: ApplicationFiled: April 17, 2001Publication date: September 20, 2001Inventors: Seiji Umemoto, Tomonori Noguchi, Tadayuki Kameyma, Kiichi Shimodaira, Hideo Sugawara, Hidehiko Andou
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Publication number: 20010010857Abstract: A resin substrate for optical use is described, which comprises a multilayer structure (5, 6, 7) having a surface roughness Ra of 0.8 nm or lower on at least one side and having an average thickness of from 100 to 800 &mgr;m.Type: ApplicationFiled: January 26, 2001Publication date: August 2, 2001Inventors: Nobuyoshi Yagi, Minoru Miyatake, Toshiyuki Umehara, Yoshimasa Sakata, Kiichi Shimodaira