Invention Grant
- Patent Title: Liquid crystal display device
- Patent Title (中): 液晶显示装置
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Application No.: US12864364Application Date: 2008-11-19
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Publication No.: US08237899B2Publication Date: 2012-08-07
- Inventor: Akira Sakai , Masahiro Hasegawa , Ikuo Ninomiya
- Applicant: Akira Sakai , Masahiro Hasegawa , Ikuo Ninomiya
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2008-064102 20080313
- International Application: PCT/JP2008/071037 WO 20081119
- International Announcement: WO2009/113208 WO 20090917
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
The present invention provides a liquid crystal display device having a high contrast ratio and no coloring during black display, over a wide viewing angle range. The liquid crystal display device of the present invention includes a reverse wavelength dispersion-type biaxial retardation film having R0(B)/R0(G) and Rth(B)/Rth(G) not greater than 0.965 and R0(R)/R0(G) and Rth(R)/Rth(G) not smaller than 1.015; and a vertical alignment liquid crystal cell that has a blue, a green, and a red color filter layer and that satisfies Rth_LC(B)/Rth_LC(G)≦1.000 and Rth_LC(R)/Rth_LC(G)≧1.000. R0(B), R0(G) and R0(R) denote the in-plane retardations of the retardation film at wavelengths 450 nm, 550 nm and 650 nm. Rth(B), Rth(G) and Rth(R), and Rth_LC(B), Rth_LC(G) and Rth_LC(R) respectively denote the thickness-direction retardations of the retardation film and the liquid crystal cell at wavelengths 450 nm, 550 nm and 650 nm.
Public/Granted literature
- US20100296037A1 LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2010-11-25
Information query
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