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:
Jun. 01, 2021
Filed:
Apr. 30, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kazuhiko Yamanaka, Osaka, JP;
Kenichi Matsumoto, Osaka, JP;
Hideo Yamaguchi, Fukuoka, JP;
Wakahiko Okazaki, Osaka, JP;
Yasuhiko Enami, Osaka, JP;
Taku Kobayashi, Kyoto, JP;
Kazuki Adachi, Shiga, JP;
Hirotaka Ueno, Osaka, JP;
PANASONIC SEMICONDUCTOR SOLUTIONS CO., LTD., Kyoto, JP;
Abstract
A light source device includes a mounted substrate which is a multi-layered substrate, a semiconductor light-emitting device which emits a laser beam, a wavelength-converting member which radiates fluorescence by being irradiated with the laser beam emitted from the semiconductor light-emitting device as an excitation light, a state detection circuit, an electric field effect type transistor which adjusts an electric current amount applied to the semiconductor light-emitting device upon receipt of an output from the state detection circuit, and an external connecting member, and the semiconductor light-emitting device, the state detection circuit, the transistor, and the external connecting member are mounted on the single mounted substrate.