公开(公告)号：US09081231B2

公开(公告)日：2015-07-14

申请号：US13256407

申请日：2010-02-12

申请人： Kentaro Yano ,  Shigeki Oka ,  Ayako Inagaki ,  Yuki Kaneko

发明人： Kentaro Yano ,  Shigeki Oka ,  Ayako Inagaki ,  Yuki Kaneko

IPC分类号： G02F1/13363 ,  G02F1/1337 ,  G02B5/30

CPC分类号： G02F1/133634 ,  G02B5/3083 ,  G02F2001/133637 ,  G02F2001/133742 ,  G02F2202/40 ,  G02F2413/02 ,  G02F2413/12

摘要： A vertical alignment mode liquid crystal display comprising: a liquid crystal cell; a first polarizer; a second polarizer; a first optical film arranged between the first polarizer and the liquid crystal cell; and a second optical film arranged between the liquid crystal cell and the second optical film, wherein the first and the second optical films each are a resin film having an optically biaxial property, the first and the second optical films meet: Formula (1) Ro1>Ro2; Formula (2) Rth1

摘要翻译： 一种垂直取向模式液晶显示器，包括：液晶单元; 第一偏振器; 第二偏振器; 布置在所述第一偏振器和所述液晶单元之间的第一光学膜; 以及布置在所述液晶单元和所述第二光学膜之间的第二光学膜，其中所述第一和第二光学膜各自为具有光学双轴性质的树脂膜，所述第一和第二光学膜满足：式（1）Ro1 > Ro2; 公式（2）Rth1

公开(公告)号：US08652591B2

公开(公告)日：2014-02-18

申请号：US13814881

申请日：2011-06-23

申请人： Takashi Sera ,  Takahiro Takagi ,  Shigeki Oka ,  Ayako Inagaki

发明人： Takashi Sera ,  Takahiro Takagi ,  Shigeki Oka ,  Ayako Inagaki

IPC分类号： G02F1/1335

CPC分类号： G02B5/3083 ,  C08J5/18 ,  C08J2301/12 ,  C08K5/1545 ,  G02B1/04 ,  Y10T428/105 ,  C08L1/08 ,  C08L1/10

摘要： The purpose of the present invention is to provide: a retardation film which uses a low-substituted cellulose ester and has improved retardation after saponification and improved wet heat stability of internal haze; a polarizing plate which uses the retardation film; and a liquid crystal display device. An optical film of the present invention contains a cellulose ester and a compound represented by general formula (1), and is characterized in that the compound has an average degree of substitution within the range of 3.0-6.0 and contains a component having a degree of substitution of 4 or less in an amount of 30-80% by mass (inclusive). (In the formula, R1-R8 each represents a substituted or unsubstituted alkylcarbonyl group or a substituted or unsubstituted allylcarbonyl group, and R1-R8 may be the same as or different from one another.)

摘要翻译： 本发明的目的是提供：使用低取代纤维素酯并且在皂化后具有改善的延迟并改善内部雾度的湿热稳定性的延迟膜; 使用相位差膜的偏振片; 和液晶显示装置。 本发明的光学膜含有纤维素酯和通式（1）表示的化合物，其特征在于，所述化合物的平均取代度在3.0〜6.0的范围内，其含有 以30〜80质量％（以下）的量替代4以下。 （式中，R 1 -R 8各自表示取代或未取代的烷基羰基或取代或未取代的烯丙基羰基，R 1〜R 8可以相同也可以不同。

公开(公告)号：US20130135565A1

公开(公告)日：2013-05-30

申请号：US13814881

申请日：2011-06-23

申请人： Takashi Sera ,  Takahiro Takagi ,  Shigeki Oka ,  Ayako Inagaki

发明人： Takashi Sera ,  Takahiro Takagi ,  Shigeki Oka ,  Ayako Inagaki

IPC分类号： G02B5/30 ,  G02F1/1335

CPC分类号： G02B5/3083 ,  C08J5/18 ,  C08J2301/12 ,  C08K5/1545 ,  G02B1/04 ,  Y10T428/105 ,  C08L1/08 ,  C08L1/10

摘要： The purpose of the present invention is to provide: a retardation film which uses a low-substituted cellulose ester and has improved retardation after saponification and improved wet heat stability of internal haze; a polarizing plate which uses the retardation film; and a liquid crystal display device. An optical film of the present invention contains a cellulose ester and a compound represented by general formula (1), and is characterized in that the compound has an average degree of substitution within the range of 3.0-6.0 and contains a component having a degree of substitution of 4 or less in an amount of 30-80% by mass (inclusive). (In the formula, R1-R8 each represents a substituted or unsubstituted alkylcarbonyl group or a substituted or unsubstituted allylcarbonyl group, and R1-R8 may be the same as or different from one another.)

摘要翻译： 本发明的目的是提供：使用低取代纤维素酯并且在皂化后具有改善的延迟并改善内部雾度的湿热稳定性的延迟膜; 使用相位差膜的偏振片; 和液晶显示装置。 本发明的光学膜含有纤维素酯和通式（1）表示的化合物，其特征在于，所述化合物的平均取代度在3.0〜6.0的范围内，其含有 以30〜80质量％（以下）的量替代4以下。 （式中，R 1 -R 8各自表示取代或未取代的烷基羰基或取代或未取代的烯丙基羰基，R 1〜R 8可以相同也可以不同。

公开(公告)号：US09223070B2

公开(公告)日：2015-12-29

申请号：US13978795

申请日：2011-12-26

申请人： Yasuhiro Watanabe ,  Ayako Inagaki

发明人： Yasuhiro Watanabe ,  Ayako Inagaki

IPC分类号： G02F1/13363 ,  G02B5/30 ,  G02B1/04

CPC分类号： G02B5/3083 ,  B32B2457/202 ,  G02B1/04 ,  G02B5/305 ,  G02F1/13363 ,  Y10T428/105 ,  C08L1/10

摘要： Provided is an optical film which does not undergo the deterioration in front contrast or contrast fluctuations even when used in a VA-type liquid crystal display device having high front contrast or as a polarizing plate protection film. The optical film comprises a cellulose ester resin having high stretching adequacy and having an average acetyl group substitution degree of 2.0-2.6, has a phase difference (Ro) of 30-100 nm, a phase difference (Rth) of 70-400 nm and a film thickness of 15-50 μm, and is characterized by fulfilling a requirement represented by formula (I). Formula (I): 0.01

摘要翻译： 提供即使在具有高前方对比度的VA型液晶显示装置或作为偏振片保护膜的情况下也不会发生前方对比度或对比度波动的劣化的光学膜。 光学膜包括具有高拉伸适应性并且平均乙酰基取代度为2.0-2.6的纤维素酯树脂，相位差（Ro）为30-100nm，相位差（Rth）为70-400nm， 膜厚15-50μm，其特征在于满足式（I）所示的要求。 式（I）：0.01

公开(公告)号：US20130293812A1

公开(公告)日：2013-11-07

申请号：US13978795

申请日：2011-12-26

申请人： Yasuhiro Watanabe ,  Ayako Inagaki

发明人： Yasuhiro Watanabe ,  Ayako Inagaki

IPC分类号： G02B5/30 ,  G02F1/13363

CPC分类号： G02B5/3083 ,  B32B2457/202 ,  G02B1/04 ,  G02B5/305 ,  G02F1/13363 ,  Y10T428/105 ,  C08L1/10

摘要： Provided is an optical film which does not undergo the deterioration in front contrast or contrast fluctuations even when used in a VA-type liquid crystal display device having high front contrast or as a polarizing plate protection film. The optical film comprises a cellulose ester resin having high stretching adequacy and having an average acetyl group substitution degree of 2.0-2.6, has a phase difference (Ro) of 30-100 nm, a phase difference (Rth) of 70-400 nm and a film thickness of 15-50 μm, and is characterized by fulfilling a requirement represented by formula (I). Formula (I): 0.01

摘要翻译： 提供即使在具有高前方对比度的VA型液晶显示装置或作为偏振片保护膜的情况下也不会发生前方对比度或对比度波动的劣化的光学膜。 光学膜包括具有高拉伸适应性并且平均乙酰基取代度为2.0-2.6的纤维素酯树脂，相位差（Ro）为30-100nm，相位差（Rth）为70-400nm， 膜厚15-50μm，其特征在于满足式（I）所示的要求。 式（I）：0.01

公开(公告)号：US20120002143A1

公开(公告)日：2012-01-05

申请号：US13256407

申请日：2010-02-12

申请人： Kentaro Yano ,  Shigeki Oka ,  Ayako Inagaki ,  Yuki Kaneko

发明人： Kentaro Yano ,  Shigeki Oka ,  Ayako Inagaki ,  Yuki Kaneko

IPC分类号： G02F1/1335

CPC分类号： G02F1/133634 ,  G02B5/3083 ,  G02F2001/133637 ,  G02F2001/133742 ,  G02F2202/40 ,  G02F2413/02 ,  G02F2413/12

摘要： A vertical alignment mode liquid crystal display comprising: a liquid crystal cell; a first polarizer; a second polarizer; a first optical film arranged between the first polarizer and the liquid crystal cell; and a second optical film arranged between the liquid crystal cell and the second optical film, wherein the first and the second optical films each are a resin film having an optically biaxial property, the first and the second optical films meet: Formula (1) Ro1>Ro2; Formula (2) Rth1

摘要翻译： 一种垂直取向模式液晶显示器，包括：液晶单元; 第一偏振器; 第二偏振器; 布置在所述第一偏振器和所述液晶单元之间的第一光学膜; 以及布置在所述液晶单元和所述第二光学膜之间的第二光学膜，其中所述第一和第二光学膜各自为具有光学双轴性质的树脂膜，所述第一和第二光学膜满足：式（1）Ro1 > Ro2; 公式（2）Rth1