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. 04, 2023
Filed:
May. 03, 2021
Samsung Display Co., Ltd., Yongin-si, KR;
Yeonkeon Moon, Yongin-si, KR;
Taesang Kim, Yongin-si, KR;
Joonseok Park, Yongin-si, KR;
Sangwoo Sohn, Yongin-si, KR;
Soyoung Koo, Yongin-si, KR;
SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do, KR;
Abstract
A display apparatus includes a substrate including a display area and a peripheral area outside the display area, a pixel circuit disposed on the substrate in the display area, where the pixel circuit includes a driving thin film transistor and a switching thin film transistor, and a display element connected to the pixel circuit. The driving thin film transistor includes a driving semiconductor layer having a single layer structure, the switching thin film transistor includes a switching semiconductor layer in which a first layer, a second layer, and a third layer, which are oxide semiconductors, are sequentially stacked one on another, and a conductivity of the second layer of the switching semiconductor layer is greater than respective conductivities of the first layer and the third layer of the switching semiconductor layer.