Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2005-11-28
2010-02-16
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S062000, C362S615000, C362S617000, C385S146000, C385S901000
Reexamination Certificate
active
07663713
ABSTRACT:
A liquid crystal display device includes a liquid crystal panel and an illumination device. The illumination device has a light guide plate and at least one spot light source on at least one side surface of the light guide plate. The light guide plate includes a large number of upper-surface arcuate cross-sectional grooves in a direction orthogonal to the one side surface on a surface thereof which faces the liquid crystal panel, and a large number of light-incident-surface arcuate cross-sectional grooves are formed in a thickness direction of the light guide plate on at least a portion of the one side surface which faces a position at which the spot light source is arranged. A relationship is provided between a contact angle Oa of the upper-surface arcuate cross-sectional grooves and a contact angle Ea of the light-incident-surface arcuate cross-sectional grooves.
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patent: 2004/0114068 (2004-06-01), Yu et al.
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Miyawaki Toshitsugu
Nakamoto Hiroshi
Saito Ken
Shimano Shigeo
Tobe Akiyoshi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Displays Ltd.
Merlin Jessica M
Nelms David
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