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:
Mar. 11, 2025
Filed:
Sep. 29, 2021
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Shunpei Yamazaki, Setagaya, JP;
Kengo Akimoto, Atsugi, JP;
Shigeki Komori, Isehara, JP;
Hideki Uochi, Atsugi, JP;
Rihito Wada, Atsugi, JP;
Yoko Chiba, Atsugi, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Abstract
A display device includes a pixel portion in which a pixel is arranged in a matrix, the pixel including an inverted staggered thin film transistor having a combination of at least two kinds of oxide semiconductor layers with different amounts of oxygen and having a channel protective layer over a semiconductor layer to be a channel formation region overlapping a gate electrode layer and a pixel electrode layer electrically connected to the inverted staggered thin film transistor. In the periphery of the pixel portion in this display device, a pad portion including a conductive layer made of the same material as the pixel electrode layer is provided. In addition, the conductive layer is electrically connected to a common electrode layer formed on a counter substrate.