Patent ID: 6192579
Filing Date: 2001-02-27
Classification: H01L,H05K,Y10T

Abstract:
A method of manufacturing a tape carrier comprising:a punching process for punching a tape material, which comprises a tape base material on one side of which adhesive is coated, by a press so as to form openings including a plurality of via holes;a laminate process of forming a metallic layer on the adhesive layer of the tape material after the punching process so as to form a tape of three layers;a photolitography process for forming a metallic wiring including via pads exposed to bottom portions of the via holes by etching the metallic layer of the tape of three layers; anda coining press process for conducting a coining press operation on internal wall surfaces of the via holes of the tape material from the other side of the tape base material so as to form the via holes into tapered holes having opening portions the diameters of which are extended.