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:
Nov. 13, 2012
Filed:
Nov. 20, 2009
Yoshinobu Suehiro, Aichi-ken, JP;
Koji Tasumi, Aichi-ken, JP;
Yoshinobu Suehiro, Aichi-ken, JP;
Koji Tasumi, Aichi-ken, JP;
Toyoda Gosei Co., Ltd., Kiyosu-shi, Aichi-ken, JP;
Abstract
A light emitting device includes a light-emitting portion including a metal part including a metal able to be bonded to a solder material, and a heat dissipation member that includes aluminum, aluminum alloy, magnesium or magnesium alloy and a bonding portion processed to be bonded to the solder material. The metal part of the light-emitting portion is bonded via the solder material to the bonding portion of the heat dissipation member. The solder material includes a material unable to be directly bonded to the heat dissipation member, the metal part of the light-emitting portion is formed by metalizing an insulation of ceramic or semiconductor, and the bonding portion includes a thermal expansion coefficient between that of the heat dissipation member and that of the insulation.