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. 21, 2021

Filed:

Mar. 31, 2020
Applicants:

Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui, CN;

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

Inventors:

Jufeng Yu, Beijing, CN;

Ling Han, Beijing, CN;

Tao Ma, Beijing, CN;

Chengshao Yang, Beijing, CN;

Lin Chen, Beijing, CN;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/786 (2006.01); H01L 29/417 (2006.01); G09G 3/20 (2006.01); H01L 29/66 (2006.01); G11C 19/28 (2006.01); H01L 21/285 (2006.01);
U.S. Cl.
CPC ...
H01L 29/78618 (2013.01); G09G 3/20 (2013.01); G11C 19/28 (2013.01); H01L 21/28506 (2013.01); H01L 29/41733 (2013.01); H01L 29/66742 (2013.01);
Abstract

The present disclosure provides a thin film transistor, including: an active layer, a source and a drain electrically coupled with the active layer, and a plurality of doped layers located between the source and the active layer and between the drain and the active layer, a resistance of one of the plurality of doped layers farthest away from the active layer is smaller than that of any other doped layer. The disclosure further provides a gate driving circuit, a display substrate and a display device. With the present disclosure, current loss of a current passing through the doped layers of the thin film transistor is reduced, on-state current of the thin film transistor is improved and a situation that output signals of the thin film transistor are insufficient is avoided.


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