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. 15, 2025
Filed:
Nov. 29, 2023
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Inventor:
Atsushi Umezaki, Kanagawa, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 19/28 (2006.01); G09G 3/36 (2006.01); G11C 19/18 (2006.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01);
U.S. Cl.
CPC ...
G09G 3/3677 (2013.01); G09G 3/3648 (2013.01); G11C 19/184 (2013.01); G11C 19/28 (2013.01); H10D 86/423 (2025.01); H10D 86/60 (2025.01); G09G 2300/0809 (2013.01); G09G 2310/0286 (2013.01);
Abstract
To suppress malfunctions in a shift register circuit. A shift register having a plurality of flip-flop circuits is provided. The flip-flop circuit includes a transistor, a transistor, a transistor, a transistor, and a transistor. When the transistoror the transistoris turned on in a non-selection period, the potential of a node A is set, so that the node A is prevented from entering into a floating state.