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. 08, 2009
Filed:
Jul. 28, 2005
Applicants:
Shinichi Satoh, Tokyo, JP;
Naoya Kimura, Chiba, JP;
Tetsuro Hara, Tokyo, JP;
Inventors:
Assignee:
Oki Semiconductor Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a drive circuit for a panel display device for driving light-emitting devices arranged at respective intersections between a plurality of data lines and a plurality of scan lines. This drive circuit includes a voltage control circuit for charging the light-emitting devices to a voltage necessary for light emission by connecting the data lines to a predetermined power supply potential in a rising period prior to a period for selectively causing the light-emitting devices to emit light; and a drive control circuit for selectively connecting the data lines to a constant current source after the rising period.