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:
Jun. 04, 2019
Filed:
Aug. 08, 2017
Applicant:
Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan, Hubei, CN;
Inventors:
Yao-Li Huang, Hubei, CN;
Xinglong He, Hubei, CN;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G09G 3/00 (2006.01); H01L 27/12 (2006.01); G02F 1/1362 (2006.01); G06F 3/047 (2006.01); G02F 1/1333 (2006.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G02F 1/13338 (2013.01); G02F 1/136286 (2013.01); G06F 3/047 (2013.01); G06F 3/0412 (2013.01); H01L 27/124 (2013.01); G02F 2201/123 (2013.01);
Abstract
A test circuit which is configured to test an in-cell touch screen includes a plurality of cascaded scanning circuits. The scanning circuit includes a test signal input terminal, a test signal output terminal connected to the touch electrode correspondingly through a first signal line and configured to input a test signal to the corresponding touch electrode, and a short-circuit feedback terminal connected to the touch electrode which the test signal output terminal of the scanning circuit at a previous stage is connected to.