Patent ID: 6383842
Filing Date: 2002-05-07
Classification: H01L

Abstract:
A method of producing a semiconductor device which includes a semiconductor chip and a stage, which supports a bottom surface of the semiconductor chip, encapsulated in a resin material as a package, said stage being smaller in size than the bottom surface of the semiconductor chip, said method comprising the steps of:performing an ultraviolet cleaning process by radiating ultraviolet rays only onto the bottom surface of the semiconductor chip thereby to clean only said bottom surface of said semiconductor chip, to improve the adhesion between the bottom surface and the resin material, and to prevent cracking of the resin material due to thermal stress caused by moisture in the resin material; and molding the package and thereby encapsulating substantially all surfaces of said semiconductor chip and said stage within the package, after said ultraviolet cleaning process, the bottom surface of the semiconductor chip having a first portion covered with the package and a second portion covered with the stage.