The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2009
Filed:
Mar. 31, 2006
Tsuyoshi Maeda, Ryuo-cho, JP;
Kimitaka Kamijo, Shiojiri, JP;
Kinya Ozawa, Suwa, JP;
Hitoshi Tsuchiya, Suwa, JP;
Tsuyoshi Maeda, Ryuo-cho, JP;
Kimitaka Kamijo, Shiojiri, JP;
Kinya Ozawa, Suwa, JP;
Hitoshi Tsuchiya, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
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.