Patent ID: 6479326
Filing Date: 2002-11-12
Classification: H01L

Abstract:
A method of forming a thermally balanced chip package, comprising:forming a single piece of material with no electrical connection leads into: a die attach structure; an outer structure surrounding said die attach structure, wherein there is at least one opening between said die attach structure and said outer structure, said outer structure having a top side for contacting a packaging material and an opposite bottom side for exposing a surface to, and for emitting heat into, the environment outside said chip package; and at least one downset connecting said die attach structure and said outer structure, wherein said at least one downset has two opposing faces, said at least one downset separates said die attach structure from said outer structure by an offset separation, and said downset, said die attach structure, and said offset separation define a packaging region; disposing a die upon said die attach structure and outside said packaging region; and encapsulating with a packaging material said die, said die attach structure, and said at least one downset, wherein said encapsulating is performed so that said surface is exposed to the environment outside said chip package, said top side of said outer structure is completely covered by said packaging material, at least one of said two opposing faces is completely covered by said packaging material, and said packaging region contains packaging material.