Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-06-28
2005-06-28
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S119000
Reexamination Certificate
active
06912029
ABSTRACT:
The invention provides an optical film prepared by laminating at least one of a first retardation film (2), having a mean in-plane refractive index of noand refractive index in the thickness direction of newherein ne−no>0, and at least one of a second retardation film (3) having an in-plane refractive index of nxin the direction showing the maximum refractive index, refractive index of nyin the direction perpendicular to the direction described just before, and refractive index in the thickness direction of nzwherein nx>ny≧nz. The light leakage occurred as the observation point is tilted from the front direction to a direction different from the direction of each absorption axis can be reduced when a plolarizing film is arranged so that the absorption axes will be perpendicular to each other.
REFERENCES:
patent: 5859681 (1999-01-01), VanderPloeg et al.
patent: 5923392 (1999-07-01), Akatsuka et al.
patent: 6292242 (2001-09-01), VanderPloeg et al.
patent: 1 045 261 (2000-10-01), None
patent: 11-023843 (1999-01-01), None
patent: 2000-137116 (2000-05-01), None
patent: 2000-227520 (2000-08-01), None
patent: 2001-042121 (2001-02-01), None
patent: 2001-091743 (2001-04-01), None
patent: 3204182 (2001-09-01), None
patent: 98/00475 (1998-01-01), None
SID 98 Digest ; Optimum Film Compensation Modes for TN and VA LCDs; J.Chen et al.; pp. 315-318.
Copy of the International Search Report dated Mar. 26, 2002.
Chinese Communication dated Jun. 18, 2004, together with an English translation.
Dudek James A.
Nields & Lemack
Nippon Kayaku Kabushiki Kaisha
Polatechno Co., Ltd.
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