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公开(公告)号：US10088705B2
公开(公告)日：2018-10-02
申请号：US15515885
申请日：2015-09-29
Applicant: NITTO DENKO CORPORATION
Inventor： Emi Miyai , Kentaro Ikeshima , Toshiki Omine , Satoshi Mita , Atsushi Kishi , Tomonori Ueno
IPC: G02F1/1335 , G02B1/11 , C23C16/509 , G02B5/30 , G02F1/13363 , B23B37/00 , B23B27/00
Abstract: A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 μm or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 μm or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor.
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公开(公告)号：US20140139919A1
公开(公告)日：2014-05-22
申请号：US14056178
申请日：2013-10-17
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yuuki Nakano , Kentaro Ikeshima , Nobuyuki Haida , Minoru Miyatake , Osamu Kaneko
CPC classification number: G02B5/3033 , B29D11/00644 , B32B37/24 , B32B38/0012 , B32B38/10 , B32B2037/243 , B32B2038/0028 , B32B2307/42 , B32B2457/202 , B32B2551/00 , G02B1/08 , G02B1/14 , G02B5/30 , G02B5/305
Abstract: 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 α 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 β formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.
Abstract translation: 根据本发明的实施方式的偏光板的制造方法包括：在树脂基板的至少一面形成有树脂基板和聚乙烯醇系树脂层的层压体的拉伸和染色，以在 树脂基板; 在偏振膜侧的层压体上层叠光学功能膜，制作光学功能性膜层叠体; 以及从光学功能膜层压体剥离树脂基板。 进行剥离，使得在剥离之前的光学功能膜层叠体的表面与树脂基板的剥离方向之间形成的角度α小于角度＆bgr; 在剥离前的光学功能性膜层叠体的表面与偏振膜的剥离方向之间形成。
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3.发明授权公开(公告)号：US11204447B2
公开(公告)日：2021-12-21
申请号：US16086751
申请日：2017-03-16
Applicant: NITTO DENKO CORPORATION
Inventor： Tomonori Ueno , Satoshi Mita , Atsushi Kishi , Kentaro Ikeshima , Yusuke Motegi
Abstract: A surface-protective film attached polarizing film is disclosed which includes a polarizing film (A) having a thickness of 100 μm or less, and a surface-protective film (B) provided on at least one surface of the polarizing film (A), wherein the polarizing film (A) comprises a polarizer, and a protective film provided on at least one surface of the polarizer, the polarizer comprises a polyvinyl alcohol-based resin and has a thickness of 10 μm or less, the polarizing film (A) has a width WA, the surface-protective film (B) has a width WB, a difference between the widths WA and WB (WA−WB) is 3 mm or more, and a peel strength of the surface-protective film (B) to the polarizing film (A) is 0.2 N/25-mm or less. The surface-protective film-attached polarizing film allows to be restrained the polarizing film from being broken, when the surface-protective film is peeled from the polarizing film.
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公开(公告)号：US10025013B2
公开(公告)日：2018-07-17
申请号：US13791017
申请日：2013-03-08
Applicant: NITTO DENKO CORPORATION
Inventor： Kentaro Ikeshima , Minoru Miyatake , Yuki Nakano
IPC: G02B5/30 , G02F1/1335 , B29C55/02
CPC classification number: G02B5/3033 , B29C55/026 , G02F1/133528 , G02F2001/133531
Abstract: An optical display device which includes a display panel, and at least one polarizing film including a polyvinyl alcohol-based resin layer disposed on a viewing side with respect to the display panel, and having an optical arrangement forming a cross-Nicol relationship with regard to polarized light entering the polarizing film from the side of the display panel. The polarizing film is produced to have a thickness of 10 μm or less, by a method comprising the steps of: forming a polyvinyl alcohol-based resin layer on a resin substrate; stretching the polyvinyl alcohol-based resin layer integrally with the resin substrate; and dyeing the polyvinyl alcohol-based resin layer using a dichroic material. The polarizing film is disposed in the optical display device in a state in which a surface of the polarizing film as a contact surface with the resin substrate during the production thereof is oriented toward a side opposite to the display panel.
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公开(公告)号：US20170299919A1
公开(公告)日：2017-10-19
申请号：US15515885
申请日：2015-09-29
Applicant: NITTO DENKO CORPORATION
Inventor： Emi Miyai , Kentaro Ikeshima , Toshiki Omine , Satoshi Mita , Atsushi Kishi , Tomonori Ueno
IPC: G02F1/1335 , G02B1/11 , C23C16/509 , G02B5/30 , G02F1/13363
CPC classification number: G02F1/133528 , B23B27/00 , B23B37/00 , B32B27/00 , B32B38/10 , B32B2307/42 , B32B2457/202 , C23C16/509 , G02B1/11 , G02B5/3033 , G02F1/133632 , G02F2413/10
Abstract: A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 μm or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 μm or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor.
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Patent Agency Ranking
公开(公告)号：US20150226894A1
公开(公告)日：2015-08-13
申请号：US14695973
申请日：2015-04-24
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yuuki Nakano , Kentaro Ikeshima , Nobuyuki Haida , Minoru Miyatake , Osamu Kaneko
CPC classification number: G02B5/3033 , B29D11/00644 , B32B37/24 , B32B38/0012 , B32B38/10 , B32B2037/243 , B32B2038/0028 , B32B2307/42 , B32B2457/202 , B32B2551/00 , G02B1/08 , G02B1/14 , G02B5/30 , G02B5/305
Abstract: 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 α 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 β formed between the surface of the optically functional film laminate immediately before the peeling and a peeling direction of the polarizing film.
Abstract translation: 根据本发明的实施方式的偏光板的制造方法包括：在树脂基板的至少一面形成有树脂基板和聚乙烯醇系树脂层的层压体的拉伸染色， 树脂基板; 在偏振膜侧的层压体上层叠光学功能膜，制作光学功能性膜层叠体; 以及从光学功能膜层压体剥离树脂基板。 进行剥离，使得在剥离之前的光学功能膜层叠体的表面与树脂基板的剥离方向之间形成的角度α小于角度＆bgr; 在剥离前的光学功能性膜层叠体的表面与偏振膜的剥离方向之间形成。
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公开(公告)号：US20150192720A1
公开(公告)日：2015-07-09
申请号：US14662843
申请日：2015-03-19
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yoshifumi Yamamoto , Kentaro Ikeshima
CPC classification number: G02B5/305 , B29C55/005 , B29C55/02 , B29D11/00644 , B29D11/00894 , B29K2029/00 , B29K2029/04 , G02B1/04 , G02B1/08 , G02B5/3033
Abstract: There is provided a polarizing film that is excellent in optical characteristics, and is excellent in durability and water resistance. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film having a thickness of 10 μm or less. The polyvinyl alcohol-based resin film has an iodine concentration of 8.5 wt % or more; and the polarizing film has a cross-linking index defined by the below-indicated equation of from 100 to 200. (Cross-linking index)=(Iodine concentration in film)×(Boric acid concentration in film)
Abstract translation: 提供了具有优异的光学特性并且耐久性和耐水性优异的偏振膜。 根据本发明的实施方案的偏振膜包括厚度为10μm以下的聚乙烯醇系树脂膜。 聚乙烯醇类树脂膜的碘浓度为8.5重量％以上; 偏光膜具有由下式表示的交联指数为100〜200（交联指数）=（膜中的碘浓度）×（膜中的硼酸浓度）
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公开(公告)号：US20150131151A1
公开(公告)日：2015-05-14
申请号：US14513380
申请日：2014-10-14
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yoshifumi Yamamoto , Kentaro Ikeshima
CPC classification number: B29D11/00788 , B29D11/00644 , B29K2029/04 , G02B1/04 , G02B5/3033
Abstract: There is provided a polarizing film that is excellent in optical characteristics, and is excellent in durability and water resistance. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film having a thickness of 10 μm or less. The polyvinyl alcohol-based resin film has an iodine concentration of 6.0 wt % or less; and the polarizing film has a cross-linking index defined by the below-indicated equation of from 100 to 200: (Cross-linking index)=(Iodine concentration in film)×(Boric acid concentration in film).
Abstract translation: 提供了具有优异的光学特性并且耐久性和耐水性优异的偏振膜。 根据本发明的实施方案的偏振膜包括厚度为10μm以下的聚乙烯醇系树脂膜。 聚乙烯醇类树脂膜的碘浓度为6.0重量％以下; 并且偏振膜具有由下式表示的交联指数为100〜200：（交联指数）=（膜中的碘浓度）×（膜中的硼酸浓度）。
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公开(公告)号：US10336024B2
公开(公告)日：2019-07-02
申请号：US14513380
申请日：2014-10-14
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yoshifumi Yamamoto , Kentaro Ikeshima
Abstract: There is provided a polarizing film that is excellent in optical characteristics, and is excellent in durability and water resistance. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film having a thickness of 10 μm or less. The polyvinyl alcohol-based resin film has an iodine concentration of 6.0 wt % or less; and the polarizing film has a cross-linking index defined by the below-indicated equation of from 100 to 200: (Cross-linking index)=(Iodine concentration in film)×(Boric acid concentration in film).
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公开(公告)号：US20150132561A1
公开(公告)日：2015-05-14
申请号：US14488738
申请日：2014-09-17
Applicant: NITTO DENKO CORPORATION
Inventor： Shusaku Goto , Yoshifumi Yamamoto , Kentaro Ikeshima
CPC classification number: G02B5/305 , B29C55/005 , B29C55/02 , B29D11/00644 , B29D11/00894 , B29K2029/00 , B29K2029/04 , G02B1/04 , G02B1/08 , G02B5/3033
Abstract: There is provided a polarizing film that is excellent in optical characteristics, and is excellent in durability and water resistance. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film having a thickness of 10 μm or less. The polyvinyl alcohol-based resin film has an iodine concentration of 8.5 wt % or more; and the polarizing film has a cross-linking index defined by the below-indicated equation of from 100 to 200. (Cross-linking index)=(Iodine concentration in film)×(Boric acid concentration in film)
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