Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-02-17
2010-06-08
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S118000, C349S119000
Reexamination Certificate
active
07733449
ABSTRACT:
A liquid crystal display of a vertical alignment (VA) mode using a circular polarization plate is provided which can reduce light leak as observed along an oblique direction and achieve a high contrast ratio. The VA mode uses a liquid crystal layer of vertical alignment in an initial alignment state. A film having generally isotropic optical characteristics in an omnidirection is used as a protective film, on a liquid crystal cell side, of first and second polarization plates disposed outside the liquid crystal cell, and first and fourth retardation films have an Nzcoefficient smaller than 1.
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Adachi Masaya
Hiyama Ikuo
Komura Shinichi
Oka Shinichiro
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Displays Ltd.
Nelms David
Nguyen Thanh-Nhan P
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