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. 22, 2011
Filed:
Oct. 25, 2007
Naotaka Kuroda, Tokyo, JP;
Akio Wakejima, Tokyo, JP;
Masahiro Tanomura, Tokyo, JP;
Hironobu Miyamoto, Tokyo, JP;
Naotaka Kuroda, Tokyo, JP;
Akio Wakejima, Tokyo, JP;
Masahiro Tanomura, Tokyo, JP;
Hironobu Miyamoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A semiconductor device, comprising: a semiconductor elementhaving a rectangular two-dimensional geometry and serving as a heat source; and a heat sink sectionhaving the semiconductor elementmounted thereon, wherein a relation among the directional components of said thermal conductivity is: Kzz≧Kyy>Kxx, where directional components of three-dimensional thermal conductivity of the heat sink sectionin X, Y and Z directions are determined as Kxx, Kyy and Kzz, and where the longer side direction of the semiconductor elementis defined as X direction, the shorter side direction thereof is defined as Y direction and the thickness direction is defined as Z direction.