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:
Sep. 16, 2025
Filed:
May. 14, 2024
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Inventors:
Hajime Kimura, Atsugi, JP;
Atsushi Umezaki, Isehara, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); G09G 3/00 (2006.01); G09G 3/36 (2006.01); H10D 30/67 (2025.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01); G02F 1/1333 (2006.01); G02F 1/1339 (2006.01); G02F 1/1343 (2006.01); G02F 1/167 (2019.01);
U.S. Cl.
CPC ...
G02F 1/13624 (2013.01); G02F 1/136259 (2013.01); G02F 1/136286 (2013.01); G02F 1/1368 (2013.01); G09G 3/006 (2013.01); G09G 3/3648 (2013.01); H10D 30/6755 (2025.01); H10D 86/423 (2025.01); H10D 86/441 (2025.01); H10D 86/481 (2025.01); H10D 86/60 (2025.01); G02F 1/133302 (2021.01); G02F 1/133345 (2013.01); G02F 1/1339 (2013.01); G02F 1/134309 (2013.01); G02F 1/13439 (2013.01); G02F 1/136254 (2021.01); G02F 1/167 (2013.01); G09G 2230/00 (2013.01); G09G 2310/0251 (2013.01); H10D 30/673 (2025.01);
Abstract
An object is to provide a display device that performs accurate display. A circuit is formed using a transistor that includes an oxide semiconductor and has a low off-state current. A precharge circuit or an inspection circuit is formed in addition to a pixel circuit. The off-state current is low because the oxide semiconductor is used. Thus, it is not likely that a signal or voltage is leaked in the precharge circuit or the inspection circuit to cause defective display. As a result, a display device that performs accurate display can be provided.