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:
Dec. 15, 2009
Filed:
Nov. 17, 2004
Naruhiko Kasai, Yokohama, JP;
Hiroki Awakura, Yokohama, JP;
Toshihiro Satou, Mobara, JP;
Hajime Akimoto, Kokubunji, JP;
Naruhiko Kasai, Yokohama, JP;
Hiroki Awakura, Yokohama, JP;
Toshihiro Satou, Mobara, JP;
Hajime Akimoto, Kokubunji, JP;
Hitachi Displays, Ltd., Chiba-ken, JP;
Abstract
A display control circuit and a display unit are provided. The display control circuit generates a sweep signal that is at a fixed voltage level for an arbitrary period. The display unit compares the magnitude of a signal voltage that is written by a data line drive circuit in accordance with display data and the magnitude of the sweep signal generated by the display control circuit, and exercises illumination/nonillumination control in accordance with the comparison result.