Patent ID: 7040388
Filing Date: 2006-05-09
Classification: F28F,H01L,Y10T

Abstract:
1. A heatsink comprising: (a) a column having a heat receiving face, wherein a cross section of said column has one shape selected from trapezoid, triangle, and a shape whose sectional width decreases as it extends away perpendicular to said heat receiving face, said heat receiving face having a protuberant heat conducting plate section at least one part thereon; (b) a plurality of pillar-type protrusions provided on two faces other than the heat receiving face of said column in such a manner that they are at a predetermined oblique angle against the heat receiving face, said plurality of pillar-type protrusions being configured to form at least one uninterrupted fluid flow path between respective pillar-type protrusions in a direction in which the cross-sectional width of said column changes, and (c) a plurality of parallel pillar-type protrusions provided on the two faces in a row that is closer to said heat receiving face than said plurality of pillar type protrusions and are formed parallel to said heat receiving face.