Patent ID: 6933619
Filing Date: 2005-08-23
Classification: H01L

Abstract:
1. A heat sink for coupling to a semiconductor chip by a dielectric material, said heat sink comprising: (a) a body having a first bending stiffness; (b) a projecting portion extending from said body along a plane and having a second bending stiffness; (c) a first plurality of holes formed entirely through said projecting portion, wherein each of said first plurality of holes collectively defines a first cross sectional area in said projecting portion through which dielectric material may flow; and (d) a second plurality of holes formed through said body, wherein each of said second plurality of holes collectively defines a second cross sectional area in said body through which dielectric may flow, wherein the total percentage of said first cross sectional area in said projecting portion is greater than the total percent of said second cross sectional area in said body.