Patent ID: 6523446
Filing Date: 2003-02-25
Classification: H01L,Y10S,Y10T

Abstract:
A method of producing an adhesive tape bearing lead frame, comprisingdetecting a punched hole in a punched adhesive tape for semiconductor, the punched adhesive tape being made from an adhesive tape containing at least one of contaminants and defects at at least one region of the adhesive tape, consisting essentially of said adhesive tape containing at least one of contaminants and defects and which consists essentially of a base film and an adhesive layer provided on one or each side of the base film, and is pierced with at least one punched hole, which is made by punching the adhesive tape, at or in the vicinity of said at least one region where the adhesive tape contains said at least one of the contaminants and defects, skipping over a part of the punched adhesive tape including the punched hole, so as to avoid the at least one of the contaminants and defects, punching the punched adhesive tape for semiconductor, with the part thereof containing the punched hole skipped over, to punch out an adhesive tape piece from the punched adhesive tape for semiconductor, and applying the adhesive tape piece to a lead frame, with one adhesive layer of the adhesive tape piece adhering to the lead frame.