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. 25, 2017
Filed:
Mar. 17, 2014
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Toshiharu Makino, Tsukuba, JP;
Satoshi Yamasaki, Tsukuba, JP;
Hideyo Ookushi, Tsukuba, JP;
Masahiko Ogura, Tsukuba, JP;
Hiromitsu Kato, Tsukuba, JP;
Daisuke Takeuchi, Tsukuba, JP;
Abstract
A white light-emitting device of the present invention includes a substrate (); a diamond semiconductor layer () provided on the substrate (), in which one or a plurality of p-type α layers (), a p-type or n-type γ layer (), and one or a plurality of n-type β layers () are laminated in this order from the substrate (); a first electrode () provided on the α layer () which injects an electric current; a second electrode () provided on the β layer () which injects an electric current; and a fluorescent member () which coats a light emission extraction region of the surface of the diamond semiconductor layer.