Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1996-01-05
1998-11-10
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349121, G02F 11335
Patent
active
058351752
ABSTRACT:
A color STN-LCD having preferable display quality and decreased manufacturing cost uses a liquid crystal display apparatus which includes a liquid crystal layer having a twist angle in a range from 200.degree. and less than 360.degree., a retardation of the liquid crystal layer in a range of 0.80 .mu.m.about.0.90 .mu.m, an azimuth of transmittance axis of the upper polarizer in a range of 30.degree..about.70.degree., an azimuth of the transmittance axis of the lower polarizer in a range of 60.degree..about.90.degree., an azimuth of the slow axis of the upper phase plate in a range of 150.degree..about.190.degree., an azimuth of the slow axis of the lower phase plate in a range of 30.degree..about.80.degree., a retardation of the upper phase plate at a wave length of 550 nm in a range of 200 nm.about.300 nm, and a retardation of the lower phase plate at a wave length of 550 nm in a range of 500 nm.about.620 nm.
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Hirakata Jun-ichi
Itoh Osamu
Kikuchi Naoki
Kondo Katsumi
Nakamura Yoshiaki
Dudek James D.
Hitachi , Ltd.
Hitachi Device Engineering & Co., Ltd.
Sikes William L.
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