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. 19, 2007
Filed:
Aug. 22, 2002
Satoshi Takehara, Machida, JP;
Yoshirou Yamaha, Hadano, JP;
Satoshi Takehara, Machida, JP;
Yoshirou Yamaha, Hadano, JP;
Asahi Kasei Microsystems Co., Ltd., Tokyo, JP;
Abstract
To reduce degradation of image quality when constructing anode line drive circuits in a display panel drive circuit from a plurality of IC chips. Dummy drive output and proper drive output of an adjoining IC chip are switched in predetermined cycles and supplied to an anode line. This makes it possible to reduce variation in adjacent output currents among IC chips. Thus, it is possible to reduce luminance differences in display areas caused by differences in current driving capacity among IC chips and reduce degradation of image quality when an anode line drive circuit is constructed from a plurality of IC chips.