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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.:

US 11127350 B1

PDFFull Text
Date of Patent:
Sep. 21, 2021

Filed:

Aug. 02, 2017

Pixel circuit, active matrix organic light emitting diode display panel, display apparatus, and method of compensating threshold voltage of driving transistor

Applicant:

Boe Technology Group Co., Ltd., Beijing, CN;

Inventors:

Cuili Gai, Beijing, CN;

Zhongyuan Wu, Beijing, CN;

Baoxia Zhang, Beijing, CN;

Ling Wang, Beijing, CN;

Yicheng Lin, Beijing, CN;

Quanhu Li, Beijing, CN;

Fang Liu, Beijing, CN;

Assignee:

BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;

Attorney:

Intellectual Valley Law, P.C.

Primary Examiner:

Kirk W Hermann

Int. Cl.
CPC ...
G06F 3/038 (2013.01); G09G 5/00 (2006.01); G09G 3/3258 (2016.01); G09G 3/3233 (2016.01); G09G 3/3291 (2016.01);
U.S. Cl.
CPC ...
G09G 3/3258 (2013.01); G09G 3/3233 (2013.01); G09G 3/3291 (2013.01);
Abstract

A pixel circuit includes a first transistor having a bottom gate and a top gate, a drain supplied with a high-level power-supply voltage, and a source coupled to a light-emitting diode (LED). The bottom gate is provided with a first voltage signal and the source is provided with a second voltage signal in a compensation period during which a present value of a threshold voltage of the first transistor is sensed at the source and a third voltage signal is determined based on the present value of the threshold voltage. The top gate is configured to be provided with the third voltage signal in an emission period to reduce the present value of the threshold voltage.

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Gai, Cuili. (2021). Pixel circuit, active matrix organic light emitting diode display panel, display apparatus, and method of compensating threshold voltage of driving transistor (U.S. Patent No. 11127350). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11127350

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