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

2008-04-22

2008-04-22

Tarazano, D. Lawrence (Department: 4174)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001100, C349S118000

Reexamination Certificate

active

11228476

ABSTRACT:
A liquid crystal panel having improved contrast ratio in an oblique direction and good display evenness without causing shift or unevenness in retardation values due to shrinkage stress of a polarizer or heat of backlight is provided.A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a polarizer arranged on both sides of the liquid crystal cell; a first optical element arranged between one polarizer and the liquid crystal cell; and a second optical element arranged between the other polarizer and the liquid crystal cell, wherein: the first optical element comprises a retardation film containing a norbornene-based resin and satisfying the following expressions (1) and (2); and the second optical element has substantially optical isotropy:in-line-formulae description="In-line Formulae" end="lead"?240 nm≦Re[590]≦350 nm  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.20≦Rth[590]/Re[590]≦0.80.  (2)in-line-formulae description="In-line Formulae" end="tail"?

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Chinese Office Action dated Oct. 12, 2007 (mailing date), issued in corresponding Chinese Patent Application No. 2005101080220.

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