Patent ID: 7286361
Filing Date: 2007-10-23
Classification: H01L,H05K

Abstract:
1. A heatsink formed of a plurality of metallic planar parts, which is connected to an IC package having a radiation fin, the heatsink comprising: a radiation fin connecting portion which is connected to the radiation fin, and formed such that opposite ends of an elongate rectangular part are bent substantially at a right angle in the same direction, so that the radiation fin connecting portion comprises a horizontal part and a pair of vertical parts; and a planar positioning part extending from a side of the horizontal part of the radiation fin connecting portion from which the vertical parts do not extend, in a direction to get away from the vertical parts; and a pair of heat release wings which are formed such that each of lateral end parts of the positioning part with respect to a direction in which the positioning part extends from the horizontal part, is bent in a direction to get away from the positioning part in a crank-like shape, one of the heat release wings being further bent at its end part substantially at a right angle in the same direction as the vertical parts, to provide a supporting part whose end part is corrugated.