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:
Aug. 03, 2010
Filed:
Dec. 27, 2007
Kouichi Takashima, Hyogo, JP;
Kouichi Takashima, Hyogo, JP;
A.L.M.T. Corp., Tokyo, JP;
Abstract
The present invention provides a heat spreaderwhich includes a substratecomposed of a metal-containing material and in which a second-component connection surfaceof the substrateis provided with wettability with a solder and a solder block layeris formed in at least one of respective regions, adjacent to each other, of the second-component connection surfaceand a side surfaceWhen a semiconductor deviceis manufactured by connecting a semiconductor laserto the element connection surfacethrough an element connecting layerand then connecting a heat sinkto the second-component connection surfacethrough a second-component connecting layerhaving a melting point lower than that of the element connecting layerthe semiconductor block layercan inhibit the melted solder from creeping up along the side surfacewhich can prevent defects that the solder that has crept up short-circuits the semiconductor laserand blocks a luminous flux of laser light emitted from an emission surfaceof the semiconductor laser