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:
Feb. 25, 2025
Filed:
Aug. 08, 2023
Applicant:
Japan Display Inc., Tokyo, JP;
Inventors:
Hajime Watakabe, Tokyo, JP;
Isao Suzumura, Tokyo, JP;
Akihiro Hanada, Tokyo, JP;
Yohei Yamaguchi, Tokyo, JP;
Assignee:
Japan Display Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/12 (2006.01); H01L 29/24 (2006.01); H01L 29/66 (2006.01); H01L 29/786 (2006.01);
U.S. Cl.
CPC ...
H01L 27/1292 (2013.01); H01L 27/1225 (2013.01); H01L 29/24 (2013.01); H01L 29/66757 (2013.01); H01L 29/66969 (2013.01); H01L 29/78666 (2013.01); H01L 29/7869 (2013.01);
Abstract
A display device including a substrate having thin film transistors (TFT) comprising: the TFT including an oxide semiconductor film, a gate electrode and an insulating film formed between the oxide semiconductor film and the gate electrode, wherein a first aluminum oxide film and a second aluminum oxide film, which is formed on the first aluminum oxide film, are formed between the insulating film and the gate electrode, an oxygen concentration in the first aluminum oxide film is bigger than an oxygen concentration in the second aluminum oxide film.