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:
Apr. 20, 2021
Filed:
Jun. 14, 2018
Applicant:
Solomon Systech (Shenzhen) Limited, Shenzhen, CN;
Inventors:
Choi Wing Siu, Hong Kong, HK;
Wing Chun Chan, Hong Kong, HK;
Ho Ming Chan, Hong Kong, HK;
Haojuan Dai, Shenzhen, CN;
Wei Gong, Shenzhen, CN;
Assignee:
Solomon Systech (Shenzhen) Limited, Shenzhen, CN;
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); G01R 31/28 (2006.01); G09G 3/34 (2006.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G01R 31/2825 (2013.01); G09G 3/344 (2013.01); G09G 2310/0267 (2013.01); G09G 2330/12 (2013.01);
Abstract
A method and a display driver apparatus for detecting panel defect on an electronic paper display (EPD) are provided. A sense voltage from the voltage for common (VCOM) electrode of the EPD is obtained and compared with an upper reference voltage and a lower reference voltage. As the sense voltage is proportional to a total capacitance of the plural display electrode capacitors on the EPD, a defective panel with capacitance abnormality or opened circuits can be identified.