Patents by Inventor Nobuyuki Haida
Nobuyuki Haida 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: 20180267211Abstract: There is provided a polarizer protective film excellent in both bending resistance and adhesiveness with a polarizer. A polarizer protective film according to an embodiment of the present invention includes: an acrylic resin; and reinforcing particles dispersed in the acrylic resin. The reinforcing particles have flat shapes, and have a length-to-thickness ratio of 7.0 or less.Type: ApplicationFiled: March 12, 2018Publication date: September 20, 2018Applicant: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Shintaro Azuma, Masayuki Okamoto, Tetsuro Ikeda, Daigoro Nakagawa
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Patent number: 9864101Abstract: Provided a polarizing film which comprising a substrate and a PVA-based resin, wherein it has good adhesion between the substrate and the PVA-based resin to allow the PVA-based resin to become less likely to be peeled off from the substrate during stretching and/or conveyance, and exhibits excellent appearance, wherein the polarizing film is obtained by providing a layer of a PVA-based resin on a substrate and stretching the substrate and the PVA-based resin layer together. The PVA-based resin contains a modified PVA, wherein the modified PVA exists in an amount allowing a modification rate with respect to the entire PVA-based resin to be in a range of 0.04 mol % to 1.4 mol %.Type: GrantFiled: July 25, 2016Date of Patent: January 9, 2018Assignee: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Shusaku Goto, Takeharu Kitagawa
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Publication number: 20160370502Abstract: [TECHNICAL PROBLEM] Provided a polarizing film which comprising a substrate and a PVA-based resin, wherein it has good adhesion between the substrate and the PVA-based resin to allow the PVA-based resin to become less likely to be peeled off from the substrate during stretching and/or conveyance, and exhibits excellent appearance. [SOLUTION] The polarizing film is obtained by providing a layer of a PVA-based resin on a substrate and stretching the substrate and the PVA-based resin layer together. The PVA-based resin contains a modified PVA, wherein the modified PVA exists in an amount allowing a modification rate with respect to the entire PVA-based resin to be in a range of 0.04 mol % to 1.4 mol %.Type: ApplicationFiled: July 25, 2016Publication date: December 22, 2016Inventors: Nobuyuki HAIDA, Shusaku GOTO, Takeharu KITAGAWA
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Patent number: 9411081Abstract: The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate (10) that includes a polyester resin base (11) and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of: stretching a laminate that includes a polyvinyl alcohol resin layer (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.Type: GrantFiled: December 1, 2011Date of Patent: August 9, 2016Assignee: NITTO DENKO CORPORATIONInventors: Takashi Shimizu, Takashi Kamijo, Hitoshi Kitagishi, Minoru Miyatake, Shusaku Goto, Takeharu Kitagawa, Tomohiro Mori, Nobuyuki Haida
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Patent number: 9400406Abstract: The present invention provides a liquid crystal panel in which warping is controlled. The liquid crystal panel includes a liquid crystal cell 20, a first polarizing film 31 disposed on a viewer side of the liquid crystal cell 20 and a second polarizing film 32 disposed on a side of the liquid crystal cell 20 opposite to the viewer side. A thickness (d1) of the first polarizing film 31 is smaller than a thickness (d2) of the second polarizing film 32.Type: GrantFiled: September 7, 2011Date of Patent: July 26, 2016Assignee: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Yuusuke Toyama, Takeharu Kitagawa
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Publication number: 20150226894Abstract: A method of manufacturing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate having a resin substrate and a polyvinyl alcohol-based resin layer formed on at least one side of the resin substrate to produce a polarizing film on the resin substrate; laminating an optically functional film on the laminate on a polarizing film side to produce an optically functional film laminate; and peeling the resin substrate from the optically functional film laminate. The peeling is performed so that an angle ? formed between a surface of the optically functional film laminate immediately before the peeling and a peeling direction of the resin substrate is smaller than an angle ? formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.Type: ApplicationFiled: April 24, 2015Publication date: August 13, 2015Applicant: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Yuuki Nakano, Kentaro Ikeshima, Nobuyuki Haida, Minoru Miyatake, Osamu Kaneko
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Patent number: 9046655Abstract: A method of manufacturing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate having a resin substrate and a polyvinyl alcohol-based resin layer formed on at least one side of the resin substrate to produce a polarizing film on the resin substrate; laminating an optically functional film on the laminate on a polarizing film side to produce an optically functional film laminate; and peeling the resin substrate from the optically functional film laminate. The peeling is performed so that an angle ? formed between a surface of the optically functional film laminate immediately before the peeling and a peeling direction of the resin substrate is smaller than an angle ? formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.Type: GrantFiled: October 17, 2013Date of Patent: June 2, 2015Assignee: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Yuuki Nakano, Kentaro Ikeshima, Nobuyuki Haida, Minoru Miyatake, Osamu Kaneko
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Publication number: 20140225288Abstract: A method for manufacturing a novel tilt alignment type optical compensation film formed using a non-liquid crystal polymer material, instead of a conventional tilt alignment type optical compensation film using a liquid crystal material. The method for manufacturing including: melting a non-liquid crystal polymer to prepare a molten resin; applying a shear force to the melted non-liquid crystal polymer by a shear force application device, thereby forming a film having an optical axis that tilts with respect to a thickness direction of the film; and stretching the film. The step of forming the film is carried out under conditions where a temperature T3 of the melted non-liquid crystal polymer, a glass transition point Tg of the non-liquid crystal polymer, and a temperature T2 of the shear force application device satisfy relationships represented by the following formulae (A) and (B): T3>Tg+25° C.; and??(A) T3>T2.Type: ApplicationFiled: July 4, 2012Publication date: August 14, 2014Applicants: TOYO KOHAN CO., LTD., NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Hironori Yaginuma, Nao Murakami, Motoko Kawasaki, Kunihiro Seike, Keigo Ehara, Shogo Yamamoto
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Publication number: 20140139919Abstract: A method of manufacturing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate having a resin substrate and a polyvinyl alcohol-based resin layer formed on at least one side of the resin substrate to produce a polarizing film on the resin substrate; laminating an optically functional film on the laminate on a polarizing film side to produce an optically functional film laminate; and peeling the resin substrate from the optically functional film laminate. The peeling is performed so that an angle ? formed between a surface of the optically functional film laminate immediately before the peeling and a peeling direction of the resin substrate is smaller than an angle ? formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.Type: ApplicationFiled: October 17, 2013Publication date: May 22, 2014Applicant: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Yuuki Nakano, Kentaro Ikeshima, Nobuyuki Haida, Minoru Miyatake, Osamu Kaneko
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Publication number: 20130329289Abstract: [TECHNICAL PROBLEM] Provided a polarizing film which comprising a substrate and a PVA-based resin, wherein it has good adhesion between the substrate and the PVA-based resin to allow the PVA-based resin to become less likely to be peeled off from the substrate during stretching and/or conveyance, and exhibits excellent appearance. [SOLUTION] The polarizing film is obtained by providing a layer of a PVA-based resin on a substrate and stretching the substrate and the PVA-based resin layer together. The PVA-based resin contains a modified PVA, wherein the modified PVA exists in an amount allowing a modification rate with respect to the entire PVA-based resin to be in a range of 0.04 mol % to 1.4 mol %.Type: ApplicationFiled: May 31, 2013Publication date: December 12, 2013Inventors: Nobuyuki HAIDA, Shusaku GOTO, Takeharu KITAGAWA
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Publication number: 20130249129Abstract: The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate (10) that includes a polyester resin base (11) and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of; stretching a laminate that includes a polyvinyl alcohol resin layer (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.Type: ApplicationFiled: December 1, 2011Publication date: September 26, 2013Applicant: NITTO DENKO CORPORATIONInventors: Takashi Shimizu, Takashi Kamijo, Hitoshi Kitagishi, Minoru Miyatake, Shusaku Goto, Takeharu Kitagawa, Tomohiro Mori, Nobuyuki Haida
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Publication number: 20130169911Abstract: The present invention provides a liquid crystal panel in which warping is controlled. The liquid crystal panel includes a liquid crystal cell 20, a first polarizing film 31 disposed on a viewer side of the liquid crystal cell 20 and a second polarizing film 32 disposed on a side of the liquid crystal cell 20 opposite to the viewer side. A thickness (d1) of the first polarizing film 31 is smaller than a thickness (d2) of the second polarizing film 32.Type: ApplicationFiled: September 7, 2011Publication date: July 4, 2013Applicant: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Yuusuke Toyama, Takeharu Kitagawa
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Publication number: 20100047484Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of more than 0 wt % and 2 wt % or less with respect to a resin component contained in the resin layer (B1).Type: ApplicationFiled: December 5, 2007Publication date: February 25, 2010Applicant: NITTO DENKO CORPORATIONInventors: Hitoshi Kitagishi, Daisuke Hattori, Nobuyuki Haida, Tsutomu Hani, Hiroyuki Takao
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Publication number: 20100033810Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth)acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing, as a main component, a thermoplastic resin other than a (meth) acrylic resin.Type: ApplicationFiled: December 5, 2007Publication date: February 11, 2010Applicant: NITTO DENKO CORPORATIONInventors: Nobuyuki Haida, Daisuke Hattori, Tsutomu Hani, Hiroyuki Takao, Hitoshi Kitagishi