Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-08-14
2007-08-14
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S098000, C349S113000, C349S114000, C349S106000
Reexamination Certificate
active
10250650
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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U.S. Appl. No. 09/418,602.
Bass, M., “Handbook of Optics”, vol. 1, Chapter 42, p. 42.3-42.6, Optical Properties of Films and Coatings, Optical Society of America, USA.
Dai Nippon Printing Co. Ltd.
Nelms David
Nguyen (Nancy) Thanh-Nhan P.
Oliff & Berridg,e PLC
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