Invention Grant
- Patent Title: Liquid crystal display device with quarter plates and birefringent layers and liquid crystal having substantially vertical alignments in black state
- Patent Title (中): 具有四分之一片和双折射层的液晶显示装置以及在黑色状态下基本垂直排列的液晶
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Application No.: US12936471Application Date: 2009-10-09
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Publication No.: US08194212B2Publication Date: 2012-06-05
- 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: JP2009-015927 20090127
- International Application: PCT/JP2009/067660 WO 20091009
- International Announcement: WO2010/087058 WO 20100805
- Main IPC: G02F1/1335
- IPC: G02F1/1335
Abstract:
The present invention provides a liquid crystal display device that has a higher contrast ratio in a wide viewing angle and that can be easily produced at low cost. The present invention is a liquid crystal display device, including in the following order: a first polarizer; a first quarter-wavelength plate (nx>ny≧nz); a liquid crystal cell; a second quarter-wavelength plate having an Nz coefficient substantially the same as that of the first quarter-wavelength plate; a birefringent layer (II) (nx
Public/Granted literature
- US20110025966A1 LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2011-02-03
Information query
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