Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-11-21
2006-11-21
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S129000, C349S130000
Reexamination Certificate
active
07139052
ABSTRACT:
The invention provides a liquid crystal display device capable of displaying images with a wide angle in both of transmissive display and reflective display. In the liquid crystal display device, a liquid crystal layer can be interposed between a pair of substrates, and a transmissive display region and a reflective display region can be provided in one dot region. The liquid crystal layer is made of liquid crystal whose dielectric anisotropy showing that liquid crystal molecules are vertically aligned at an initial stage is negative. A liquid crystal layer thickness controlling layer for making the thickness of the liquid crystal layer in the reflective display region different from the thickness of the liquid crystal layer in the transmissive display region can be provided between the substrate and the liquid crystal layer. In the transmissive display region and the reflective display region, protrusions that protrude from the internal surface of the substrate to the inside of the liquid crystal layer are further provided. Therefore, the height of the convex portions formed in the transmissive display region is larger than the height of the convex portions formed in the reflective display region.
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Dudek James A.
Oliff & Berridg,e PLC
Seiko Epson Corporation
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