Patent ID: 6404634
Filing Date: 2002-06-11
Classification: H01L,H05K

Abstract:
A heat sink for transferring heat from a chip, said heat sink comprising a base, core and fin array in the form of a unitary piece, and wherein:(1) the core has a cavity that is partially defined by a cavity wall, (2) the fin array comprises an array of forward fins and an array of backward fins, (3) the array of forward fins extends from an exterior region of the heat sink to the cavity wall, (4) the array of backward fins extends from the exterior region of the heat sink to a portion of the core that lies between the cavity wall and the exterior region of the heat sink, and (5) the array of forward fins and the array of backward fins are arranged along the cavity wall by alternating a fin from the array of forward fins with a fin from the array of backward fins.