Patent ID: 6130115
Filing Date: 2000-10-10
Classification: H01L

Abstract:
A method of manufacturing a plastic encapsulated semiconductor device, comprising:a first step of forming a lead frame having an outer frame, a plurality of die pad support pins extending from said outer frame, a die pad suspended by said plurality of die pad support pins, and a plurality of leads extending from said outer frame toward said die pad, each of said components being positioned on a substantially equal level;a second step of partially bending each of said die pad support pins to form a stepped portion such that the die pad of said lead frame is positioned higher in level than said leads;a third step of bonding a semiconductor chip onto said die pad;a fourth step of connecting a part of said semiconductor chip to said individual leads by means of thin metal wires;a fifth step of sealing a region containing said semiconductor chip, said die pad, said die pad support pins, said leads, and said thin metal wires with a sealing resin such that respective bottom faces of said leads are exposed and that the sealing resin partially underlies said die pad; anda sixth step of cutting off the leads of said lead frame outside the sealing resin to separate the outer frame of said lead frame.