Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2005-03-15
2008-12-23
Wood, Kevin S (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C385S065000
Reexamination Certificate
active
07468764
ABSTRACT:
A first optical-path changing layer is provided, on a front-face side of a rear-face side transparent substrate including a light source on one side face thereof. The first optical-path changing layer has a refractive index substantially equal to that of the transparent substrate, and includes predetermined protrusions and predetermined depressions. Further, a low refractive-index layer is provided on a front-face side of the first optical-path changing layer. The low refractive-index layer is in contact with the protrusions and the depressions of the first optical-path changing layer, and has a smaller refractive index than the refractive index of the first optical-path changing layer. Further, a second optical-path changing layer is provided on a rear-face side of the rear-face side transparent substrate. The second optical-path changing layer includes predetermined protrusions and predetermined depressions.
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Partial English translation of JP 2003-057645.
International Search Report issued in the corresponding International Application No. PCT/JP2005/004528, mailed on Jul. 5, 2005.
Fukushima Hiroshi
Takatani Tomoo
Wada Masakazu
Yabuta Koji
Keating & Bennett LLP
Sharp Kabushiki Kaisha
Wood Kevin S
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