Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-08-29
2006-08-29
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S113000
Reexamination Certificate
active
07098975
ABSTRACT:
In order to reduce an occurrence of a double image, to improve a contrast ratio in transmissive display, and to widen a viewing angle, a light diffusion layer for restricting the occurrence of the double image is placed between a viewing angle compensating plate and a reflective layer. With this configuration, though traveling directions of light emitted from a backlight placed on an outside of the reflective layer are changed in the light diffusion layer, the traveling directions are not changed in the viewing angle compensating plate and a liquid crystal layer once the light is made incident onto the viewing angle compensating plate, and the light travels straight in any of the vertical direction and slanting directions. Thus, the viewing angle compensating plate can exert an original function thereof to compensate a phase difference and can ensure a viewing angle widely.
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Dudek James A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toshiba Matsushita Display Technology Co., Ltd.
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