Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2011-03-08
2011-03-08
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S114000, C349S117000
Reexamination Certificate
active
07903216
ABSTRACT:
A liquid crystal device is provided in which a liquid crystal layer formed of a liquid crystal having a negative dielectric anisotropy is interposed between a first substrate and a second substrate disposed opposite to each other, the liquid crystal device including: an alignment film controlling the liquid crystal, the alignment film being disposed between the liquid crystal layer and the first substrate and between the liquid crystal layer and the second substrate in a vertical direction; a first wave plate and a first polarizing plate provided on a surface of the first substrate opposite to the liquid crystal layer; and a second wave plate and a second polarizing plate provided on a surface of the second substrate opposite to the liquid crystal layer. Here, an alignment control portion controlling alignment of the liquid crystal of the liquid crystal layer is provided on at least one of the first substrate and the second substrate. In addition, retardation axes of the first wave plate and the second wave plate are approximately perpendicular to each other, and at least one of the retardation axis of the first wave plate and the retardation axis of the second wave plate is arranged approximately parallel to a main alignment direction of the liquid crystal aligned by the alignment control portion.
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K&L Gates LLP
Merlin Jessica M
Nelms David
Sony Corporation
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