公开(公告)号：US08958034B2

公开(公告)日：2015-02-17

申请号：US13857347

申请日：2013-04-05

Applicant: Samsung Display Co., Ltd.

Inventor： Min Oh Choi ,  Hee Wook Do ,  Kyeongha Kim ,  Duckjong Suh ,  Tecksoo Kim ,  Seungbeom Park ,  Sang-Gu Lee

IPC: G02F1/1335

CPC classification number: G02F1/133528 ,  G02F1/1396 ,  G02F2413/02 ,  G02F2413/11

Abstract: 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.

Abstract translation: 液晶显示器包括液晶面板，在液晶面板的表面上具有偏振轴的偏振片; 以及液晶面板和偏振片之间的补偿膜，并且具有光通过补偿膜的光轴。 当补偿膜的表面被称为x-y平面时，将通过x轴并垂直于补偿膜的光轴的平面称为x-y'平面。 补偿膜的第一延迟值（Ro'）为（nx-ny'）d，第二延迟值（Rth'）为[（nx + ny'）/ 2-nz'] d，第 第二延迟值（Ro'）和（Rth'）满足下式0.92＆nlE; Rth'/ Ro'＆nlE; 4.75，其中“n”表示折射率，“d”表示补偿膜的厚度 z轴方向。