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. 19, 2017
Filed:
Sep. 03, 2015
Lapis Semiconductor Co., Ltd., Yokohama, JP;
Kenichi Shiibayashi, Yokohama, JP;
Koji Higuchi, Yokohama, JP;
LAPIS SEMICONDUCTOR CO., LTD., Yokohama, JP;
Abstract
A driver circuit driving a display device comprises: a gradation voltage generating circuit for generating m gradation voltages (m is an integer larger than or equal to 2) indicative of m stages of gradation levels; n decoder circuits each configured to select, out of the m gradation voltages, n drive voltages (n is an integer larger than or equal to 2) corresponding to n data pieces on the basis of n input gradation signals; m gradation voltage wirings each for transferring the m gradation voltages to the n decoder circuits, respectively; and a charge supplementing circuit for supplementing each of the m gradation voltage wirings with an amount of electric charge when a voltage drop occurs in the gradation voltage wirings.