Patents by Inventor Taku Ishimori
Taku Ishimori 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: 11091623Abstract: A cyclic olefin resin composition film having high toughness with less difference in toughness between length and width directions. The cyclic olefin resin composition film contains a cyclic olefin resin, a styrene elastomer and inorganic oxide fine particles having an average particle diameter of 40 nm or smaller, and has a linear expansion coefficient of 40 ppm/° C. to 60 ppm/° C. This film attains high toughness with less difference in toughness between length and width directions.Type: GrantFiled: November 18, 2015Date of Patent: August 17, 2021Assignee: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kazuki Hirata, Hiroshi Sugata
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Publication number: 20180258273Abstract: A cyclic olefin resin composition film having high toughness with less difference in toughness between length and width directions. The cyclic olefin resin composition film contains a cyclic olefin resin, a styrene elastomer and inorganic oxide fine particles having an average particle diameter of 40 nm or smaller, and has a linear expansion coefficient of 40 ppm/° C. to 60 ppm/° C. This film attains high toughness with less difference in toughness between length and width directions.Type: ApplicationFiled: November 18, 2015Publication date: September 13, 2018Applicant: Dexerials CorporationInventors: Ken HOSOYA, Akihiro HORII, Kei OBATA, Taku ISHIMORI, Kazuki HIRATA, Hiroshi SUGATA
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Patent number: 9670329Abstract: Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0° C. to 100° C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.Type: GrantFiled: December 4, 2014Date of Patent: June 6, 2017Assignee: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
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Publication number: 20170152360Abstract: A cyclic olefin resin composition film having excellent anti-blocking properties and toughness. The cyclic olefin resin composition film containing a cyclic olefin resin and a styrene-based elastomer; the cyclic olefin resin composition film having a first surface layer part having a thickness of from 25 to 45% of total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part; an average value of minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part or the second surface layer part being from 75 to 125% of an average value of minor-axis dispersion diameter of the styrene-based elastomer of the internal part. As result, it is possible to achieve excellent anti-blocking properties and toughness.Type: ApplicationFiled: July 10, 2015Publication date: June 1, 2017Applicant: DEXERIALS CORPORATIONInventors: Kanako HASHIMOTO, Akihiro HORII, Kei OBATA, Ken HOSOYA, Taku ISHIMORI, Kazuki HIRATA
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Publication number: 20170145174Abstract: A cyclic olefin resin composition film has excellent anti-blocking properties and toughness. A cyclic olefin resin composition film containing a cyclic olefin resin and a styrene-based elastomer; the cyclic olefin resin composition film having a first surface layer part having a thickness of from 25 to 45% of a total thickness, a second surface layer part having a thickness of from 25 to 45% of the total thickness, and an internal part having a thickness of from 10 to 50% of the total thickness between the first surface layer part and the second surface layer part; an average value of a minor-axis dispersion diameter of the styrene-based elastomer in the first surface layer part or the second surface layer part being from 75 to 125% of an average value of a minor-axis dispersion diameter of the styrene-based elastomer of the internal part.Type: ApplicationFiled: July 14, 2015Publication date: May 25, 2017Applicant: DEXERIALS CORPORATIONInventors: Taku ISHIMORI, Akihiro HORII, Kei OBATA, Ken HOSOYA
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Publication number: 20160311987Abstract: Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0° C. to 100° C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.Type: ApplicationFiled: December 4, 2014Publication date: October 27, 2016Applicant: DEXERIALS CORPORATIONInventors: Ken Hosoya, Akihiro Horii, Kei Obata, Taku Ishimori, Kanako Hashimoto, Kazuki Hirata
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Publication number: 20150153498Abstract: A phase difference element that can suppress a change in retardation by tilt in a Z-axis direction has an in-plane retardation R0 and a retardation Rth in a thickness direction that satisfy 0.7×R0?Rth?1.3×R0 (R0: |Nx?Ny|×d, Rth: |((Nx+Ny)/2)?Nz|×d, Nx: refractive index in width direction, Ny: refractive index in longitudinal direction, Nz: refractive index in thickness direction, and d: element thickness).Type: ApplicationFiled: August 1, 2013Publication date: June 4, 2015Inventors: Hiroshi Hayashi, Akihiro Horii, Taku Ishimori, Ken Hosoya, Hiroshi Sugata
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Patent number: 8339548Abstract: An optical element covering member includes one or more optical elements, a support medium for supporting the one or more optical elements, and a covering member for covering the one or more optical elements and the support medium. At least one out of the one or more optical elements is a reflective polarizer, and the covering member has at least a region, through which the light inputted from a light source is emitted to a liquid crystal panel, the region having a phase difference lag of not more than 1/50 ? of a measured wavelength, with respect to an optical axis of the reflective polarizer.Type: GrantFiled: April 9, 2008Date of Patent: December 25, 2012Assignee: Sony CorporationInventors: Shigehiro Yamakita, Eiji Ohta, Shogo Shinkai, Taku Ishimori
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Publication number: 20110242141Abstract: An optical sheet laminate body includes: a first optical sheet having a top surface and a bottom surface, of which at least the top surface has asperities including projections and depressions; and a second optical sheet having a top surface and a bottom surface. Summits of the projections on the top surface of the first optical sheet are directly bonded, in a whole region facing the bottom surface of the second optical sheet, to the bottom surface of the second optical sheet without any intermediate material in between.Type: ApplicationFiled: March 21, 2011Publication date: October 6, 2011Applicant: SONY CORPORATIONInventors: Shigehiro Yamakita, Ken Hosoya, Noriyuki Hirai, Taku Ishimori, Hiroshi Hayashi, Yoshiyuki Maekawa, Hiroshi Mizuno, Daisuke Ito
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Patent number: 8016450Abstract: An illuminating apparatus is provided and includes a plurality of point light sources in one plane and a first optical sheet and a second optical sheet overlapped in a region facing the plurality of point light sources. The plurality of point light sources are arranged in a first direction and also arranged in a second direction orthogonal to the first direction. The first optical sheet has a plurality of first three-dimensional structures extending in a direction parallel to the first direction and arranged in a direction parallel to the second direction. The second optical sheet has a plurality of second three-dimensional structures extending in a direction parallel to the second direction and arranged in a direction parallel to the first direction. Each of the second three-dimensional structures has a shape which generates a larger amount of return light from normal incident light as compared with the first three-dimensional structures.Type: GrantFiled: August 11, 2009Date of Patent: September 13, 2011Assignee: Sony CorporationInventors: Shogo Shinkai, Shigehiro Yamakita, Yasuyuki Kudo, Taku Ishimori, Eiji Ohta, Yutaka Muramoto
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Publication number: 20110205734Abstract: An optical sheet stack body includes two optical sheets disposed to overlap a plurality of point light sources arranged in a first direction and arranged in a second direction crossing the first direction. The optical sheets are disposed so that a long-side direction of the optical sheet crosses the first and second directions at an angle other than right angle. A first optical sheet disposed on the point light source side has a plurality of first three-dimensional structures extending in a direction parallel to or almost parallel to the first direction. A second optical sheet disposed on the side opposite to the point light source has a plurality of second three-dimensional structures extending in a direction parallel to or almost parallel to the second direction. The second three-dimensional structure has a shape by which return light is generated from normal incident light more than the first three-dimensional structure.Type: ApplicationFiled: February 17, 2011Publication date: August 25, 2011Applicant: SONY CORPORATIONInventors: Shigehiro Yamakita, Shogo Shinkai, Yasuyuki Kudo, Taku Ishimori, Eiji Ohta, Yutaka Muramoto
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Publication number: 20110026240Abstract: An optical element laminate is provided which, while an increase in thickness of a liquid crystal display device is suppressed, improves insufficient rigidity of an optical element and, in addition, which does not degrade display characteristics of the liquid crystal display device. The optical element laminate includes a plate-shaped support member having a first primary surface and a second primary surface and an optical element which is laminated on at least one of the first primary surface and the second primary surface of the support member and, in addition, which has a film shape or a sheet shape. The periphery of the laminated optical element is at least bonded to facing two sides of the support member, the optical element and the support member are placed in close contact with each other, and a thickness t of the support member, a length L of the support member, and a tensile force F of the optical element satisfy the relational expression of 0?F?1.Type: ApplicationFiled: September 18, 2009Publication date: February 3, 2011Applicant: SONY CORPORATIONInventors: Hiroshi Hayashi, Eiji Ohta, Ken Hosoya, Yasuyuki Kudo, Shigehiro Yamakita, Masayasu Kakinuma, Taku Ishimori, Shogo Shinkai, Yoshiyuki Maekawa, Masami Miyake, Yohei Kanno, Fumiko Sasaki, Akihiro Horii
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Patent number: 7782420Abstract: An optical element covering member is provided which can suppress degradation in display performance caused by warping and undulation. The optical element covering member includes at least one optical element, a support medium supporting the optical element; and a covering member covering the optical element and the support medium. In the above optical element covering member, the covering member has a Vicat softening point of more than 85° C., and at least one surface of the covering member, which covers the support medium, has a coefficient of thermal expansion in the range of 85% to 160% of the coefficient of thermal expansion of the support medium.Type: GrantFiled: April 8, 2008Date of Patent: August 24, 2010Assignee: Sony CorporationInventors: Eiji Ohta, Toru Abiko, Masayasu Kakinuma, Ken Hosoya, Taku Ishimori, Shigehiro Yamakita, Shogo Shinkai
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Patent number: 7683980Abstract: An optical element covering member includes: at least one optical element; a support medium supporting the at least one optical element; and a shrinkable covering member covering the at least one optical element and the support medium. In the optical element covering member, among sides forming primary surfaces of the support medium, at least one set of sides facing each other is covered with the covering member, and the following equation (1) is satisfied under conditions at a temperature of 70° C., 0?F?1.65×104×t/L ??(1) where t indicates the thickness of the support medium, L indicates the length of the side of the support medium covered with the covering member, F indicates a tensile force of the covering member, which acts in a direction parallel to the side having the length L.Type: GrantFiled: September 17, 2008Date of Patent: March 23, 2010Assignee: Sony CorporationInventors: Eiji Ohta, Ken Hosoya, Yasuyuki Kudo, Shigehiro Yamakita, Masayasu Kakinuma, Taku Ishimori, Shogo Shinkai
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Publication number: 20100039797Abstract: An illuminating apparatus is provided and includes a plurality of point light sources in one plane and a first optical sheet and a second optical sheet overlapped in a region facing the plurality of point light sources. The plurality of point light sources are arranged in a first direction and also arranged in a second direction orthogonal to the first direction. The first optical sheet has a plurality of first three-dimensional structures extending in a direction parallel to the first direction and arranged in a direction parallel to the second direction. The second optical sheet has a plurality of second three-dimensional structures extending in a direction parallel to the second direction and arranged in a direction parallel to the first direction. Each of the second three-dimensional structures has a shape which generates a larger amount of return light from normal incident light as compared with the first three-dimensional structures.Type: ApplicationFiled: August 11, 2009Publication date: February 18, 2010Applicant: SONY CORPORATIONInventors: Shogo Shinkai, Shigehiro Yamakita, Yasuyuki Kudo, Taku Ishimori, Eiji Ohta, Yutaka Muramoto
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Publication number: 20090303413Abstract: An optical sheet packaged body in which a wrinkle is not generated is provided. The optical sheet packaged body includes a laminated body in which a plurality of optical sheets such as a light source image segmentation sheet, a diffusion plate, a diffusion sheet, and a luminance enhancement film are layered, and a flexible film that wraps around the laminated body and has one or a plurality of openings to expose at least part of an outer edge of the diffusion plate. An exposed portion exposed from at least one of the openings of the diffusion plate is provided with a shape (supported portion) for positioning to a chassis (bottom chassis and middle chassis) supporting the optical sheet packaged body.Type: ApplicationFiled: February 13, 2008Publication date: December 10, 2009Applicant: SONY CORPORATIONInventors: Eiji Ohta, Toru Abiko, Yasuyuki Kudo, Hirokazu Odagiri, Satoshi Sato, Andrew Chakchung Yu, Hiroshi Hayashi, Yoshiyuki Maekawa, Masayasu Kakinuma, Taro Omura, Taku Ishimori, Shigehiro Yamakita, Yoshihiro Fujimaki, Mitsunari Hoshi
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Publication number: 20090079900Abstract: An optical element covering member includes: at least one optical element; a support medium supporting the at least one optical element; and a shrinkable covering member covering the at least one optical element and the support medium. In the optical element covering member, among sides forming primary surfaces of the support medium, at least one set of sides facing each other is covered with the covering member, and the following equation (1) is satisfied under conditions at a temperature of 70° C., 0?F?1.65×104×t/L ??(1) where t indicates the thickness of the support medium, L indicates the length of the side of the support medium covered with the covering member, F indicates a tensile force of the covering member, which acts in a direction parallel to the side having the length L.Type: ApplicationFiled: September 17, 2008Publication date: March 26, 2009Applicant: SONY CORPORATIONInventors: Eiji Ohta, Ken Hosoya, Yasuyuki Kudo, Shigehiro Yamakita, Masayasu Kakinuma, Taku Ishimori, Shogo Shinkai
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Publication number: 20090079899Abstract: An optical element package includes at least one optical element; a supporting member that supports the at least one optical element; and a packaging component having shrinkability that packages the at least one optical element and the supporting member. The supporting member has two main surfaces having a rectangular shape, and in angle formed between an orientation axis of a main surface portion of the packaging component and a side surface of the supporting member is 8° or less.Type: ApplicationFiled: September 12, 2008Publication date: March 26, 2009Applicant: SONY CORPORATIONInventors: Eiji Ohta, Ken Hosoya, Shigehiro Yamakita, Shogo Shinkai, Masayasu Kakinuma, Taku Ishimori
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Publication number: 20090059122Abstract: A surface emitting device includes a plurality of light sources disposed on an identical plane, an optical element having translucent properties and having formed thereon a luminance distribution-forming layer for suppressing luminance variations of light emitted from the plurality of light sources. A reflective surface is provided. for reflecting a light emitted from the plurality of light sources, the reflective surface being disposed opposite to the optical element by sandwiching the plurality of light sources with an air layer in between the reflective surface and the optical element. A diffuser for diffusing the light emitted from the plurality of light sources is disposed opposite to the plurality of light sources by sandwiching the optical element.Type: ApplicationFiled: August 22, 2008Publication date: March 5, 2009Applicant: SONY CORPORATIONInventors: Shogo Shinkai, Shigehiro Yamakita, Taro Omura, Taku Ishimori, Eiji Ohta
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Publication number: 20080252812Abstract: An optical element covering member is provided which can suppress degradation in display performance caused by warping and undulation. The optical element covering member includes at least one optical element, a support medium supporting the optical element; and a covering member covering the optical element and the support medium. In the above optical element covering member, the covering member has a Vicat softening point of more than 85° C., and at least one surface of the covering member, which covers the support medium, has a coefficient of thermal expansion in the range of 85% to 160% of the coefficient of thermal expansion of the support medium.Type: ApplicationFiled: April 8, 2008Publication date: October 16, 2008Applicant: SONY CORPORATIONInventors: Eiji Ohta, Toru Abiko, Masayasu Kakinuma, Ken Hosoya, Taku Ishimori, Shigehiro Yamakita, Shogo Shinkai