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:
Jul. 19, 2016
Filed:
Aug. 19, 2014
Applicant:
Everdisplay Optronics (Shanghai) Limited, Shanghai, CN;
Inventors:
Ying-Hsiang Tseng, Shanghai, CN;
Ching-hung Lee, Shanghai, CN;
Assignee:
EverDisplay Optronics (Shanghai) Limited, Shanghai, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01);
U.S. Cl.
CPC ...
G09G 3/3266 (2013.01); G09G 3/3233 (2013.01); G09G 3/3291 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2320/0238 (2013.01); G09G 2320/043 (2013.01);
Abstract
The present disclosure provides a pixel driving circuit and a display device, the pixel driving circuit includes: a control unit; a capacitor; a first transistor; a second transistor; a third transistor and a fourth transistor. The present disclosure can effectively compensate the variation of the threshold voltage of the drive thin film transistor by controlling the thin film transistors, thus prevent nonuniform brightness of a screen due to nonuniform current, and extend lifespan of the screen.