Patent ID: 6340792
Filing Date: 2002-01-22
Classification: H01L

Abstract:
A semiconductor device mold package comprising:a mold cap having a recess defined by an inner wall surface and surrounded by a mouth portion, a height from the mouth portion to a top of an outer wall surface being defined as â€œaâ€ , the mouth portion forming a right angle with the outer wall surface, a height from the mouth portion to a top of the inner wall surface being defined as â€œbâ€ , and a thickness of the mold cap at the mouth portion being defined as â€œtâ€ , the mold cap being constructed to fulfill a relation of a-b&gE;t and a-ba mold case joined to the mold cap to form a hollow closed space that encapsulates a gas therein; and a lead frame supporting a semiconductor chip that is contained in the closed space, wherein the lead frame extends through a wall of the mold case.