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:
Jun. 26, 2012
Filed:
Mar. 18, 2010
Akihiro Yamamura, Osaka, JP;
Takahiro Kobayashi, Okayama, JP;
Hideyuki Nakanishi, Okayama, JP;
Toshiki Onishi, Osaka, JP;
Seiji Hamada, Osaka, JP;
Atsushi Nakanishi, Osaka, JP;
Akihiro Yamamura, Osaka, JP;
Takahiro Kobayashi, Okayama, JP;
Hideyuki Nakanishi, Okayama, JP;
Toshiki Onishi, Osaka, JP;
Seiji Hamada, Osaka, JP;
Atsushi Nakanishi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The backlight apparatus allows brightness control with minimum image quality deterioration. This apparatus has: an illuminating section that radiates illumination light on a back of a liquid crystal panel comprising a plurality of image display areas; and a brightness determining section that determines a light emission brightness value of the illuminating section and renews a light emitting state of the illuminating section, based on the determined light emission brightness value. The illuminating section has light emitting areas illuminating each of a plurality of image display areas. The brightness determining section determines light emission brightness values of the image display areas, from values acquired by applying weights to the information based on input image signals of the image display areas, and changes the weights for the information based on luminance of ambient light surrounding the backlight apparatus.