Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2011-08-09
2011-08-09
Chen, Wen-Ying P (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S117000
Reexamination Certificate
active
07995175
ABSTRACT:
A liquid crystal display device including first and second substrates sandwiching therebetween a liquid crystal layer, and first and second polarizers. The first polarizer and the second polarizer are disposed such that an optical absorption axis of the first polarizer and an optical absorption axis of the second polarizer cross each other perpendicularly. There is disposed an optically biaxial retardation film having refractive indices nx, nyand nzrespectively in x-, y- and z-directions, wherein the optically biaxial retardation film provides an in-plane retardation having a magnitude defined by |nx-ny| • d, with d representing a thickness of the optically biaxial retardation film, and further wherein the in-plane retardation of the optically biaxial retardation film has a value of 20 nm or more but does not exceed 80 nm.
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Chida Hideo
Koike Yoshio
Ohmuro Katsufumi
Sasaki Takahiro
Tsuda Hideaki
Chen Wen-Ying P
Greer Burns & Crain Ltd.
Sharp Kabushiki Kaisha
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