Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-03-13
2007-03-13
Ton, Toan (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S129000
Reexamination Certificate
active
10351506
ABSTRACT:
The invention provides a thin reflective plate having cholesteric liquid crystal that can prevent or reduce a decrease of reflection efficiency. A reflective plate includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer includes a plurality of regions in which the helical axes of the cholesteric liquid crystal are aligned in different directions in the plane of a substrate, and therefore, the regions can reflect color light components having different wavelengths. Consequently, the cholesteric liquid crystal layer can reflect light formed of light components of different colors (for example, white light) as a whole. When the reflective plate is applied to a reflective liquid crystal display device or the like, it is possible to appropriately reflect white light for display.
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Akihito Shiozawa et al., Optical Properties of Diffusion-Type Cholestric Liquid Crystalline Polymer Film, Mol. Cryst. and Liq. Cryst., 2001, vol. 364, pp. 469-478.
Kamijo Kimitaka
Maeda Tsuyoshi
Ozawa Kinya
Tsuchiya Hitoshi
Oliff & Berridg,e PLC
Seiko Epson Corporation
Ton Toan
LandOfFree
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