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:
May. 03, 2005
Filed:
Jun. 25, 1999
Yasuki Rai, Ogaki, JP;
Hisao Uehara, Ogaki, JP;
Yasushi Marushita, Gifu, JP;
Makoto Shimizu, Ogaki, JP;
Makoto Kitagawa, Gifu-ken, JP;
Yusuke Tsutsui, Hashima, JP;
Takeo Yoshimura, Gifu-ken, JP;
Yasuki Rai, Ogaki, JP;
Hisao Uehara, Ogaki, JP;
Yasushi Marushita, Gifu, JP;
Makoto Shimizu, Ogaki, JP;
Makoto Kitagawa, Gifu-ken, JP;
Yusuke Tsutsui, Hashima, JP;
Takeo Yoshimura, Gifu-ken, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A liquid crystal display apparatus includes a liquid crystal display panel having preset display characteristics, such as image brightness and contrast. A luminescent unit is optically connected with the display panel and provides light to the display panel in order to form an image on the display panel. The luminescent unit includes a light collector which collects ambient light and a light source, for generating light when the amount of ambient light is insufficient to generate a clear image. A control circuit is electrically connected to the display panel and automatically varies the preset display characteristics in accordance with the amount of ambient light collected by the light collector.