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. 03, 2026
Filed:
Dec. 12, 2023
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Inventors:
Yoshiharu Hirakata, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Hisao Ikeda, Kanagawa, JP;
Kazuhiko Fujita, Kanagawa, JP;
Akihiro Kaita, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 23/56 (2023.01); G03B 15/03 (2021.01); G03B 15/05 (2021.01); H04N 23/63 (2023.01); H04N 23/74 (2023.01); H05B 44/00 (2022.01); H10K 50/814 (2023.01); H10K 50/858 (2023.01); H10K 59/12 (2023.01); H10K 59/80 (2023.01); H10K 71/80 (2023.01); H10K 101/00 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
G03B 15/05 (2013.01); G03B 15/03 (2013.01); H04N 23/56 (2023.01); H04N 23/63 (2023.01); H04N 23/74 (2023.01); H05B 44/00 (2022.01); H10K 59/80516 (2023.02); G03B 2215/0567 (2013.01); H10K 59/1201 (2023.02); H10K 59/879 (2023.02); H10K 71/80 (2023.02); H10K 2101/27 (2023.02); H10K 2102/311 (2023.02);
Abstract
A small light-emitting device is provided. A light-emitting device which is less likely to produce a shadow is provided. A structure including a switching circuit for supplying a pulsed constant current and a light-emitting panel supplied with the pulsed constant current has been conceived.