Patents by Inventor Shunsuke Yamanaka
Shunsuke Yamanaka 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: 20160245972Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid-crystal molecules, wherein the first substrate has an orientation-controlling force caused by stretching, and a slow axis of the first substrate is different from a lengthwise direction of the first substrate; an optically anisotropic laminate, a circular polarizing plate, and an organic EL display device having the anisotropic layer; as well as manufacturing method thereof.Type: ApplicationFiled: October 28, 2014Publication date: August 25, 2016Applicant: ZEON CORPORATIONInventors: Shunsuke YAMANAKA, Masakazu SAITO, Hiromasa HASHIMOTO
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Publication number: 20160092005Abstract: Disclosed is a display device with a capacitive touch panel including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate, a first conductive layer, a second conductive layer, and a substrate, in which the substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer, the viewing-side polarizing plate has a polarizing film, and a slow axis of the optical film intersects a transmission axis of the polarizing film at an angle of about 45° as viewed in the stacking direction.Type: ApplicationFiled: April 9, 2014Publication date: March 31, 2016Inventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
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Publication number: 20160085100Abstract: A display device including a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate; a first conductive layer, a dielectric layer and a second conductive layer constituting a capacitive touch sensor; and a substrate, the first conductive layer, dielectric layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate, the first conductive layer is formed on one surface of the substrate, the dielectric layer is formed on a surface of the first conductive layer opposite to the substrate side, the second conductive layer is formed on a surface of the dielectric layer opposite to the first conductive layer side, the substrate has an optical film with a predetermined phase difference, the viewing-side polarizing plate has a polarizing film, a slow axis of optical film intersects a transmission axis of polarizing film at predetermined angle.Type: ApplicationFiled: April 9, 2014Publication date: March 24, 2016Applicant: ZEON CORPORATIONInventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
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Patent number: 9285525Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.Type: GrantFiled: April 17, 2015Date of Patent: March 15, 2016Assignee: ZEON CORPORATIONInventors: Tomokazu Kinohira, Kohei Fujii, Takashi Morita, Shunsuke Yamanaka, Taku Hatano
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Publication number: 20160070383Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a circularly polarizing plate, a first conductive layer, and a second conductive layer. The circularly polarizing plate includes a substrate and a polarizing plate. The first conductive layer, the second conductive layer, and the substrate are positioned closer to the display panel than is the polarizing plate, and the first conductive layer is positioned closer to the cover layer than is the second conductive layer. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of ?/4. The polarizing plate has a polarizing film.Type: ApplicationFiled: April 4, 2014Publication date: March 10, 2016Applicant: ZEON CORPORATIONInventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
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Publication number: 20160070382Abstract: This disclosure provides a display device with a capacitive touch panel (100) including a laminate between a display panel (20) and a cover layer (80), the laminate having a viewing-side polarizing plate (60), a first conductive layer (50), a second conductive layer (30), and a substrate (40). The viewing-side polarization plate (60) has a polarizing film (62). The first conductive layer (50), second conductive layer (30), and substrate (40) are positioned closer to the display panel (20) than is the polarizing film (62) of the viewing-side polarization plate (60). The first conductive layer (50) is positioned closer to the cover layer (80) than is the second conductive layer (30). The first conductive layer (50) and second conductive layer (30) are arranged apart from each other. One of the first conductive layer (50) and the second conductive layer (30) is formed on one surface of the substrate (40).Type: ApplicationFiled: April 4, 2014Publication date: March 10, 2016Applicant: ZEON CORPORATIONInventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
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Publication number: 20160062509Abstract: A display device with a capacitive touch panel includes a laminate between a display panel and a cover layer, the laminate having a viewing-side polarizing plate, a first conductive layer, a second conductive layer, and a substrate. The first conductive layer, second conductive layer, and substrate are positioned closer to the cover layer than is the viewing-side polarizing plate. The first and second conductive layers are arranged apart from each other in a stacking direction so as to form a capacitive touch sensor. One of the first and second conductive layers is formed on one surface of the substrate. The substrate has an optical film with a phase difference of (2n?1)?/4, where n is a positive integer. The viewing-side polarizing plate has a polarizing film. A slow axis of the optical film intersects a transmission axis of the polarizing film at about 45° as viewed in the stacking direction.Type: ApplicationFiled: April 4, 2014Publication date: March 3, 2016Applicant: ZEON CORPORATIONInventors: Tetsuya TOYOSHIMA, Shunsuke YAMANAKA
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Patent number: 9250372Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.Type: GrantFiled: April 17, 2015Date of Patent: February 2, 2016Assignee: ZEON CORPORATIONInventors: Tomokazu Kinohira, Kohei Fujii, Takashi Morita, Shunsuke Yamanaka, Taku Hatano
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Publication number: 20150234107Abstract: A method for producing a retardation film comprising the steps of: co-extruding or simultaneously casting a thermoplastic resin A and a thermoplastic resin B to obtain a laminated film comprising a layer of the thermoplastic resin A and a layer of the thermoplastic resin B; and uniaxially stretching the laminated film at least twice to cross a molecular orientation axis in the layer of the thermoplastic resin A and a molecular orientation axis in the layer of the thermoplastic resin B each other at almost right angles.Type: ApplicationFiled: May 1, 2015Publication date: August 20, 2015Applicant: ZEON CORPORATIONInventors: Taku HATANO, Kohei ARAKAWA, Shunsuke YAMANAKA
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Publication number: 20150219816Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.Type: ApplicationFiled: April 17, 2015Publication date: August 6, 2015Inventors: Tomokazu KINOHIRA, Kohei FUJII, Takashi MORITA, Shunsuke YAMANAKA, Taku HATANO
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Patent number: 9050763Abstract: A method for producing a retardation film comprising the steps of: co-extruding or simultaneously casting a thermoplastic resin A and a thermoplastic resin B to obtain a laminated film comprising a layer of the thermoplastic resin A and a layer of the thermoplastic resin B; and uniaxially stretching the laminated film at least twice to cross a molecular orientation axis in the layer of the thermoplastic resin A and a molecular orientation axis in the layer of the thermoplastic resin B each other at almost right angles.Type: GrantFiled: February 13, 2009Date of Patent: June 9, 2015Assignee: ZEON CORPORATIONInventors: Taku Hatano, Kohei Arakawa, Shunsuke Yamanaka
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Patent number: 9048457Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.Type: GrantFiled: March 7, 2013Date of Patent: June 2, 2015Assignee: ZEON CORPORATIONInventors: Tomokazu Kinohira, Kohei Fujii, Takashi Morita, Shunsuke Yamanaka, Taku Hatano
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Publication number: 20150062702Abstract: A phase difference film layered body is obtained by stretching a film before stretching, the film before stretching including: a P1 layer formed of a resin p1 containing polyphenylene ether having a positive intrinsic birefringence value and a polystyrene-based polymer having a negative intrinsic birefringence value and having a syndiotactic structure; and a P2 layer disposed in contact with the P1 layer and formed of a resin p2 containing an acrylic resin or an alicyclic structure-containing polymer. In the resin p1, the weight ratio of (the content of the polyphenylene ether)/(the content of the polystyrene-based polymer) is 35/65 to 45/55. A method for producing the phase difference film layered body and a method for producing a phase difference film using the phase difference film layered body are also provided.Type: ApplicationFiled: February 26, 2013Publication date: March 5, 2015Inventors: Takashi Morita, Kohei Fujii, Tomokazu Kinohira, Shunsuke Yamanaka, Taku Hatano
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Publication number: 20150048339Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.Type: ApplicationFiled: March 7, 2013Publication date: February 19, 2015Inventors: Tomokazu Kinohira, Kohei Fujii, Takashi Morita, Shunsuke Yamanaka, Taku Hatano
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Patent number: 8363183Abstract: The present invention is a lengthy-shaped polarizing plate comprising a linearly-polarized light separation element, a linear light polarizing film and a protection film in this order, wherein said linearly-polarized light separation element includes a layer composed of a resin A whose inherent birefringence value is negative and has a linearly-polarized light transmission axis in a crosswise direction.Type: GrantFiled: February 25, 2010Date of Patent: January 29, 2013Assignee: Zeon CorporationInventors: Taku Hatano, Shunsuke Yamanaka, Kouhei Arakawa
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Patent number: 8270076Abstract: A retardation film composed of a laminated film which comprises a layer A composed of a material having a positive intrinsic birefringence and a layer B composed of a material having a negative intrinsic birefringence; the retardation film has a stretching temperature T? which causes delaying of a phase after the stretching to a phase before the stretching and a stretching temperature T? which causes hastening of a phase after the stretching to a phase before the stretching, in cases of uniaxially stretching in a direction of an X axis by draw ratio of 1.25, in which the phase is of linearly polarized light ?X in relation to linearly polarized light ?Y, the X axis is an uniaxially stretching direction; and the retardation film satisfies 0.92 ?R40/Re ?1.08, wherein Re (nm) and R40 (nm) are retardation values of light having a wavelength of 550 nm.Type: GrantFiled: March 18, 2009Date of Patent: September 18, 2012Assignee: Zeon CorporationInventors: Taku Hatano, Shunsuke Yamanaka
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Patent number: 8223304Abstract: A liquid crystal display device of an in-plane switching mode comprises at least optically anisotropic members (A) and (B) and a liquid crystal cell disposed between a pair of polarizers having absorption axes disposed approximately perpendicularly to each other, wherein nzA>nyA and nxB>nzB (nxA, nxB: refractive indices (n) in the direction of the in-plane slow axis; nyA, nyB: n in the in-plane direction perpendicular to the above direction; nzA, nzB: n in the direction of thickness, each at 550 nm); the in-plane slow axes of (A) and (B) are approximately parallel or perpendicular to each other; and the in-plane slow axis of (A) is approximately parallel or perpendicular to the absorption axis of a polarizer closer to (A). The antireflection property, scratch resistance and durability are excellent, the angle of field is wide, and uniform display of images with great contrast can be achieved at any angle of observation.Type: GrantFiled: February 2, 2012Date of Patent: July 17, 2012Assignee: Zeon CorporationInventors: Motohiro Itadani, Shuhei Okude, Shunsuke Yamanaka, Kohei Arakawa
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Publication number: 20120133866Abstract: A liquid crystal display device of an in-plane switching mode comprises at least optically anisotropic members (A) and (B) and a liquid crystal cell disposed between a pair of polarizers having absorption axes disposed approximately perpendicularly to each other, wherein nzA>nyA and nxB>nzB (nxA, nxB: refractive indices (n) in the direction of the in-plane slow axis; nyA, nyB: n in the in-plane direction perpendicular to the above direction; nzA, nzB: n in the direction of thickness, each at 550 nm); the in-plane slow axes of (A) and (B) are approximately parallel or perpendicular to each other; and the in-plane slow axis of (A) is approximately parallel or perpendicular to the absorption axis of a polarizer closer to (A). The antireflection property, scratch resistance and durability are excellent, the angle of field is wide, and uniform display of images with great contrast can be achieved at any angle of observation.Type: ApplicationFiled: February 2, 2012Publication date: May 31, 2012Inventors: Motohiro Itadani, Shuhei Okude, Shunsuke Yamanaka, Kohei Arakawa
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Patent number: 8134666Abstract: A liquid crystal display device of an in-plane switching mode comprises at least optically anisotropic members (A) and (B) and a liquid crystal cell disposed between a pair of polarizers having absorption axes disposed approximately perpendicularly to each other, wherein nzA>nyA and nxB>nzB (nxA, nxB: refractive indices (n) in the direction of the in-plane slow axis; nyA, nyB: n in the in-plane direction perpendicular to the above direction; nzA, nzB: n in the direction of thickness, each at 550 nm); the in-plane slow axes of (A) and (B) are approximately parallel or perpendicular to each other; and the in-plane slow axis of (A) is approximately parallel or perpendicular to the absorption axis of a polarizer closer to (A). The antireflection property, scratch resistance and durability are excellent, the angle of field is wide, and uniform display of images with great contrast can be achieved at any angle of observation.Type: GrantFiled: September 16, 2009Date of Patent: March 13, 2012Assignee: Zeon CorporationInventors: Motohiro Itadani, Shuhei Okude, Shunsuke Yamanaka, Kohei Arakawa
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Patent number: 7964254Abstract: An optical laminate having layer A having a resin having a negative intrinsic birefringence and at least one layer B having a transparent resin, having substantially no orientation and laminated at least on one face of layer A and satisfies a relation |Re(A)|>|Re(B)|, wherein Re(A) and Re(B) represent in-plane retardations of layer A and layer B, respectively, measured with light having a wavelength of 400 to 700 nm, an optical element having a laminate of the optical laminate and a polarizer plate, and a liquid crystal display device using at least one sheet of the optical laminate. In the liquid crystal display device, optical compensation can be made in accordance with the mode of the liquid crystal display by the three dimensional control of the refractive index, and the liquid crystal display device provides an image display with liquid crystals exhibiting small change in the phase contrast depending on the viewing angle.Type: GrantFiled: March 22, 2005Date of Patent: June 21, 2011Assignee: Zeon CorporationInventors: Shunsuke Yamanaka, Kohei Arakawa