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:
Apr. 10, 2018
Filed:
Aug. 18, 2014
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Shunpei Yamazaki, Tokyo, JP;
Yoshiharu Hirakata, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Hisao Ikeda, Kanagawa, JP;
Daiki Nakamura, Kanagawa, JP;
Akihiro Kaita, Kanagawa, JP;
Masatoshi Kataniwa, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
A light-emitting device that can switch between two modes: single light emission and intermittent light emission is provided. The light-emitting device includes a driver circuit that can supply a control pulse signal, a constant current power supply that is supplied with the control pulse signal and can supply a constant current pulse, and a light-emitting panel that is supplied with the constant current pulse. The driver circuit includes a start switch circuit that can supply a start signal, a pulse-interval modulation circuit that can supply a pulse-interval modulation signal, and a microcomputer that is supplied with the start signal and the pulse-interval modulation signal and can supply the control pulse signal.