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:
Feb. 05, 2013
Filed:
Dec. 16, 2009
Tomoyuki Takei, Ichihara, JP;
Hisayuki Miki, Ichihara, JP;
Tomoyuki Takei, Ichihara, JP;
Hisayuki Miki, Ichihara, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A light-emitting chip () includes: a container () having a concave portion (); first to fourth lead portions () to (), provided to be exposed to the concave portion (); and a first blue LED to a fourth blue LED () mounted on the first to fourth lead portions () to () exposed to the concave portion (). The container () includes a first container portion () covering the region of the concave portion () where the first to fourth lead portions () to () are not exposed, and a second container portion () contacting the first to fourth lead portions () to () without being exposed to the concave portion () and accommodating the first container portion (). The first container portion () is formed of a material having higher light reflectivity than that of the second container portion (), and the second container portion () is formed of a material having higher thermal conductivity than that of the first container portion (). Thus, a decrease in extraction efficiency for light emitted from a light-emitting element can be suppressed, and a rise in the temperature of the light-emitting element in response to the light emission can be suppressed.