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. 11, 2007
Filed:
Aug. 29, 2003
Jun Koyama, Kanagawa, JP;
Yutaka Shionoiri, Kanagawa, JP;
Hiroyuki Miyake, Kanagawa, JP;
Yasuhiro Hirayama, Osaka, JP;
Buyeol Lee, Nara, JP;
Jun Koyama, Kanagawa, JP;
Yutaka Shionoiri, Kanagawa, JP;
Hiroyuki Miyake, Kanagawa, JP;
Yasuhiro Hirayama, Osaka, JP;
Buyeol Lee, Nara, JP;
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display device having analog buffer circuits, which is reduced in luminance fluctuation is provided. A source signal line driver circuit has a plurality of analog buffer circuits, the plurality of source signal lines and the plurality of analog buffer circuits constitute a circuit group, and source signal lines connected to the analog buffer circuits are switched their connections to different analog buffer circuits each time a new period is started. Therefore, output fluctuation among the analog buffer circuits is averaged and a uniform image can be displayed on the screen.