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:
Nov. 06, 2007
Filed:
Aug. 15, 2003
Takumi Seki, Nagano-ken, JP;
Eiji Okamoto, Nagano-ken, JP;
Keiji Takizawa, Nagano-ken, JP;
Seiko Epson Corporation, JPX, unknown;
Abstract
In a dark environment, light emitted by a fluorescent tubeenters a liquid crystal panel by a light guide plate, is transmitted through a transflective electrodeafter passing through a polarizerand a retardation plate, and is introduced into a liquid crystal layerfollowing coloration of light by a color filter. The light introduced into the liquid crystal layeris emitted at an observation side of the liquid crystal panel through the retardation plateand the polarizersequentially. On the other hand, in a bright environment, light from the observation side passes through the polarizerand the liquid crystal layer, and is reflected at the transflective electrodefollowing coloration of light by the color filter, whereby the light is emitted at the observation side.