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:
Dec. 12, 2017
Filed:
Apr. 11, 2016
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 ...
G03B 15/03 (2006.01); H04N 5/225 (2006.01); H04N 5/235 (2006.01); H05B 33/08 (2006.01); G03B 15/05 (2006.01); H01L 51/52 (2006.01); H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
H04N 5/2256 (2013.01); G03B 15/03 (2013.01); G03B 15/05 (2013.01); H01L 51/5212 (2013.01); H01L 51/5275 (2013.01); H04N 5/2354 (2013.01); H04N 5/23293 (2013.01); H05B 33/08 (2013.01); H05B 33/0815 (2013.01); G03B 2215/0567 (2013.01); H01L 2227/326 (2013.01); H01L 2251/5338 (2013.01); H01L 2251/5361 (2013.01); H01L 2251/5376 (2013.01);
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.