Board with cholesteric layer and display having the board
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United States of America Patent
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-
Aug 14, 2007
Grant Date -
Mar 18, 2004
app pub date -
Nov 11, 2002
filing date -
Nov 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In view of the above problems of the prior art, the present invention has been made, and an object of the present invention is to provide a board, which is free from coloring, has high color tone quality, can realize a bright display screen, and imposes no significant restriction on the provision of an electric circuit, and a display device comprising the board, and further provides a liquid crystal display board, which is excellent in color contrast between transmission display and reflection display, and a semi-transmission color liquid crystal display device comprising the liquid crystal display board. A board according to the invention comprises a light transparent substrate and a cholesteric layer provided on the substrate and provided with an optical window of a predetermined pattern.
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