Board with cholesteric layer and display having the board
AssigneeDai Nippon Printing Co., Ltd.
InventorKeiji Kashima
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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.
Claims7
A board, comprising:
- a light transparent substrate;
- and
- a cholesteric layer provided on the substrate;
- wherein the cholesteric layer is provided with an optical window portion of a predetermined pattern where the cholesteric layer is absent, and
- circularly polarized light is reflected on the cholesteric layer, and transmitted in the optical window portion.
Dependencies are inferred from the claim text.