Invention Grant
- Patent Title: Liquid crystal display device, optical compensatory sheet, and polarizer and liquid crystal display device employing the same
- Patent Title (中): 液晶显示装置,光学补偿片,偏振片及使用其的液晶显示装置
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Application No.: US11794355Application Date: 2005-12-28
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Publication No.: US08049850B2Publication Date: 2011-11-01
- Inventor: Susumu Sugiyama , Eiichiro Aminaka , Hajime Nakayama , Yukito Saitoh
- Applicant: Susumu Sugiyama , Eiichiro Aminaka , Hajime Nakayama , Yukito Saitoh
- Applicant Address: JP Minato-Ku, Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Minato-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2004-378873 20041228; JP2005-012674 20050120; JP2005-035012 20050210
- International Application: PCT/JP2005/024262 WO 20051228
- International Announcement: WO2006/070936 WO 20060706
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
A liquid crystal display device comprising a liquid crystal panel in which liquid crystals having negative dielectric anisotropy are interposed between upper substrate and lower substrate that have been vertically oriented on the surface, the orientation of the liquid crystals being almost vertical with no applied voltage, almost horizontal when a predetermined voltage is applied, and tilted when a smaller voltage than the predetermined voltage is applied; a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel such that the absorption axes of the polarizers are perpendicular to each other; a first retardation film disposed between the liquid crystal panel and the first polarizer; and a second retardation film disposed between the liquid crystal panel and the second polarizer, wherein the polarizer comprises a polarizing film and a pair of protective films having the polarizing film in between, and wherein at least one of the protective films is a cellulose acylate film satisfying: 0≦Re(630)≦10 and |Rth(630)|≦25.
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