Liquid crystal panel and liquid crystal display apparatus

Details Liquid crystal panel and liquid crystal display apparatus Liquid crystal panel and liquid crystal display apparatus

2008-05-01

2009-12-29

Font, Frank G (Department: 2883)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C349S119000

Reexamination Certificate

active

07639329

ABSTRACT:
The liquid crystal panel according to an embodiment of the present invention includes, in the stated order from a viewer side: a first polarizer; a first optical compensation layer; a liquid crystal cell; a second optical compensation layer; and a second polarizer, wherein:the first optical compensation layer has an absolute value of a photoelastic coefficient of 40×10−12(m2/N) or less, has an in-plane retardation Δnd of 90 nm to 200 nm, has relationships of the following Expressions (1) and (2), and functions as a protective layer on a liquid crystal cell side of the first polarizer; andthe second optical compensation layer has relationships of the following Expressions (3) and (4),in-line-formulae description="In-line Formulae" end="lead"?Δnd(380)=Δnd(550)=Δnd(780)  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?nx>ny>nz  (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Rth(380)>Rth(550)>Rth(780)  (3)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?nx=ny>nz  (4).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 2006/0158593 (2006-07-01), Sakai et al.
patent: 2006/0177607 (2006-08-01), Ohmori et al.
patent: 2006/0238681 (2006-10-01), Murakami et al.
patent: 2007/0040963 (2007-02-01), Maruyama et al.
patent: 2008/0204644 (2008-08-01), Toyama et al.
patent: 2008/0273153 (2008-11-01), Takeda et al.
patent: 11-95208 (1999-04-01), None

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