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:
Aug. 17, 2021
Filed:
Jul. 07, 2020
Applicant:
Lapis Semiconductor Co., Ltd., Yokohama, JP;
Inventor:
Kenichi Shiibayashi, Yokohama, JP;
Assignee:
LAPIS SEMICONDUCTOR CO., LTD., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3614 (2013.01); G09G 3/3666 (2013.01); G09G 3/3685 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/08 (2013.01); G09G 2320/043 (2013.01); G09G 2320/0646 (2013.01);
Abstract
A display driver according to the present invention includes a withstand voltage protection part that precharges an output node of a polarity changeover switch circuit that switches a polarity of a drive signal supplied to a display device from an electric potential of a positive polarity (a first electric potential to a third electric potential) to an electric potential of a negative polarity (the third electric potential to a second electric potential) or vice versa to the third electric potential immediately before the polarity switching.