Invention Grant
- Patent Title: Liquid crystal display device
- Patent Title (中): 液晶显示装置
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Application No.: US13120043Application Date: 2010-03-02
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Publication No.: US08488091B2Publication Date: 2013-07-16
- Inventor: Akira Sakai
- Applicant: Akira Sakai
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2009-127933 20090527
- International Application: PCT/JP2010/053351 WO 20100302
- International Announcement: WO2010/137372 WO 20101202
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
The present invention provides an LCD device that can be easily produced and has a high contrast ratio in a wide viewing angle range. The LCD device includes in the following order: a first polarizer; a first birefringent layer (II); a first quarter-wave plate; a liquid crystal cell; a second quarter-wave plate having an Nz coefficient substantially equal to that of the first quarter-wave plate; a second birefringent layer (II) having an Nz coefficient and an in-plane retardation that are substantially equal to an Nz coefficient and an in-plane retardation of the first birefringent layer (II), respectively; and a second polarizer, wherein the device includes at least one birefringent layer (III) disposed at least one of: between the first birefringent layer (I) and the liquid crystal cell; and between the liquid crystal cell and the second birefringent layer (I).
Public/Granted literature
- US20110170041A1 LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2011-07-14
Information query
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