Patent ID: 7087467

Claim:
A process of producing a thermally conductive resin sheet member attaching lead frame which comprises a lead frame which is located on and which is integrated with a thermally conductive sheet member formed from a thermally conductive resin mixture comprising an in organic filler and a thermosetting resin composition which member comprises a thermosetting resin in a semi-cured state, the process comprising the steps of: (a) obtaining the thermally conductive resin sheet member from the thermally conductive resin mixture comprising the inorganic filler and the thermally conductive resin composition which comprises the thermosetting resin, (b) thermally treating the thermally conductive resin sheet member so that it has a predetermined gel time, and (c) placing the lead frame on the thermally conductive resin sheet member and pressing them toward each other under a temperature at which curing of the thermally conductive resin does not proceed so as to integrate the lead frame and the sheet member.