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.

Date of Patent:
Dec. 08, 2020

Filed:

Oct. 03, 2019
Applicant:

AU Optronics Corporation, Hsin-Chu, TW;

Inventors:

Hsiang-Yuan Hsieh, Hsin-Chu, TW;

Min-Yao Lu, Hsin-Chu, TW;

Ming-Chen Hsu, Hsin-Chu, TW;

Chin-Tang Chuang, Hsin-Chu, TW;

Assignee:

AU OPTRONICS CORPORATION, Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/3233 (2016.01); G09G 3/3258 (2016.01); G09G 3/32 (2016.01); G09G 3/00 (2006.01);
U.S. Cl.
CPC ...
G09G 3/32 (2013.01); G09G 3/006 (2013.01); G09G 2300/0809 (2013.01); G09G 2310/0267 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/08 (2013.01);
Abstract

A pixel circuit includes a first lighting circuit, a second lighting circuit, and a compensation circuit. A first light emitting element of the first lighting circuit receives a first driving current when the first transistor switch of the first lighting circuit is turned on. The second light emitting element of the second light emitting circuit receives a second driving current when the second transistor switch of the second light emitting circuit is turned on. When the first light emitting element and the second light emitting element are driven by the first driving current and the second driving current, the compensation circuit provides a compensation current to the first light emitting element or the second light emitting element according to a difference in impedance between the first light emitting circuit and the second light emitting circuit.


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