Patent ID: 6803258
Filing Date: 2004-10-12
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising steps of:(a) preparing a lead frame having a framework and a plurality of leads inside said framework, wherein the lead width of tips of said leads are smaller than the lead thickness of the tips of said leads; (b) preparing a heat radiating plate including a main surface and a back surface opposite to said main surface, said plate having a first portion of said main surface and a second portion of said main surface that is at the outer periphery of said first portion; said heat radiating plate having slits penetrating from said main surface to said back surface (c) preparing a semiconductor chip having a semiconductor element and a plurality of electrodes formed on a principal plane; (d) fastening said semiconductor chip on said first portion of said plate; (e) fastening said tips of leads on said second portion of said plate; (f) after the step (e), bonding wires on said tips of said leads and said electrodes of said semiconductor chip to electrically connect to each other; and (g) after the step (f), sealing said tips of said leads, said plate, said semiconductor chip and said bonding wires with a molding member.