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:
Apr. 13, 2010
Filed:
May. 12, 2005
Tetsuro Hara, Tokyo, JP;
Naoya Kimura, Chiba, JP;
Takayuki Shimizu, Tokyo, JP;
Akira Kondo, Fukuoka, JP;
Haruyo Takayanagi, Chiba, JP;
Shinichi Satoh, Tokyo, JP;
Tetsuro Hara, Tokyo, JP;
Naoya Kimura, Chiba, JP;
Takayuki Shimizu, Tokyo, JP;
Akira Kondo, Fukuoka, JP;
Haruyo Takayanagi, Chiba, JP;
Shinichi Satoh, Tokyo, JP;
Oki Semiconductor Co., Ltd., , JP;
Abstract
A color balancing circuit for a flat panel display such as an electroluminescent display generates a primary current that can be varied to adjust the overall brightness of the display. Three currents related to the primary current by selectable ratios are generated, by current mirror circuits, for example; the ratios can be individually varied to adjust the color balance. Driving currents are generated from the three adjusted currents, by mirroring the adjusted currents, for example, and are used to drive display elements that emit light in the three primary colors. Image brightness and color balance can accordingly be adjusted separately, even though both are adjusted by adjusting the driving current. Circuit size is reduced in that the same primary current is used for all three primary colors.