Patent ID: 6569380
Filing Date: 2003-05-27
Classification: B22F,H01L,Y10T

Abstract:
A method to form a combined enclosure and heat sink structure for a semiconductor device comprising:preparing a first feedstock comprising a first mixture of powdered metal materials, lubricants, and binders; preparing a second feedstock comprising a second mixture of powdered metal materials, lubricants, and binders such that the difference between the sintering shrinkage of each said first and second feedstock is less than 1%; pressing said first and second feedstocks to form a first green part having an enclosure shape and a second green part having a heat sink shape; removing said lubricants and said binders from said first and second green parts to form a first powdered skeleton and a second powdered skeleton; and sintering said first and second powdered skeletons to complete said combined enclosure and heat sink structure wherein said first and second powdered skeletons are in intimate contact during said sintering.