Patent ID: 6338196
Filing Date: 2002-01-15
Classification: H01L,Y10T

Abstract:
A method of forming a plurality of anodized heat sinks comprising:providing a strip of metallic material having a length dimension, a width dimension and a first thickness dimension; stamping a plurality of apertures in said strip of metallic material to form a plurality of heat sinks disposed adjacent at least one rail member, each of said plurality of heat sinks comprising a member having at least a partially planar front surface, a partially planar rear surface and a perimeter surface joining said front surface with said rear surface, said front and rear surfaces defining a second thickness dimension proximal said perimeter surface, each of said plurality of heat sinks being attached to said at least one rail member by a bridge member having a front and a rear surface, said front and rear surfaces of said bridge member facing substantially parallel to said front and rear surfaces of a proximal one of said plurality of heat sinks, said bridge member comprising a region of reduced thickness relative to said second thickness dimension; immersing said plurality of heat sinks in a solvent bath; exposing said plurality of heat sinks to an electric current while in said solvent bath to form an anodic film on said plurality of heat sinks, said anodic film penetrating said front and rear surfaces of said plurality of heat sinks and said front and rear surfaces of said bridge member by a predetermined amount; and thereafter detaching at least one of said plurality of heat sinks from said at least one rail member by separating said bridge member.