Patent ID: 6673655
Filing Date: 2004-01-06
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 tips of said leads are divided from each other; (b) preparing a heat radiation plate including a main surface and a back surface opposite to said main surface, said heat radiation plate having a first portion of said main surface, a second portion of said main surface that is at the outer periphery of said first portion and slits penetrating from said main surface to said back surface between said first portion and said second portion; (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 heat radiation plate; (e) fixing said tips of leads on said second portion of said heat radiation plate; (f) after the step (e), bonding wires on said tips of said leads and electrically connecting said leads to said electrodes of said semiconductor chip; and (g) after the step (f) sealing said tips of said leads, said heat radiation plates said semiconductor chip and said bonding wires with a molding member.