发明授权
US08958034B2 Polarizing plate comprising a compensation film having a first retardation value Ro and a second retardation value Rth and liquid crystal display having the same
有权
偏振板包括具有第一延迟值Ro和第二延迟值Rth的补偿膜和具有该补偿膜的液晶显示器
- 专利标题: Polarizing plate comprising a compensation film having a first retardation value Ro and a second retardation value Rth and liquid crystal display having the same
- 专利标题(中): 偏振板包括具有第一延迟值Ro和第二延迟值Rth的补偿膜和具有该补偿膜的液晶显示器
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申请号: US13857347申请日: 2013-04-05
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公开(公告)号: US08958034B2公开(公告)日: 2015-02-17
- 发明人: Min Oh Choi , Hee Wook Do , Kyeongha Kim , Duckjong Suh , Tecksoo Kim , Seungbeom Park , Sang-Gu Lee
- 申请人: Samsung Display Co., Ltd.
- 申请人地址: KR
- 专利权人: Samsung Display Co., Ltd.
- 当前专利权人: Samsung Display Co., Ltd.
- 当前专利权人地址: KR
- 代理机构: Cantor Colburn LLP
- 优先权: KR10-2012-0126008 20121108
- 主分类号: G02F1/1335
- IPC分类号: G02F1/1335
摘要:
A liquid crystal display includes a liquid crystal panel, a polarizing plate on a surface of the liquid crystal panel and having a polarizing axis; and a compensation film between the liquid crystal panel and the polarizing plate, and having an optical axis at which light passes through the compensation film. When a surface of the compensation film is referred to as a x-y plane, a plane passing through an x-axis and vertical to the optical axis of the compensation film is referred to as an x-y′ plane. A first retardation value (Ro′) of the compensation film is (nx−ny′)d, and a second retardation value (Rth′) is [(nx+ny′)/2−nz′]d, and the first and second retardation values (Ro′) and (Rth′) satisfy the following Formula of 0.92≦Rth′/Ro′≦4.75, where ‘n’ denotes a refractive index and ‘d’ denotes a thickness of the compensation film in a z-axis direction.
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