Patent ID: 6776329
Filing Date: 2004-08-17
Classification: H01L

Abstract:
Process for producing a heat conducting connection between two workpieces (1, 2), which comprises the steps of:producing a porous sintered layer (3) of heat-conducting material which is located between the two workpieces (1, 2) and is sintered superficially to each workpiece (1, 2), and subsequently compacting the porous sintered layer (3) which has been sintered to the two workpieces (1, 2) by pressing the two workpieces relatively against one another (1, 2), wherein the step for producing the porous sintered layer (3) includes the steps of: applying a paste (5) to at least one workpiece (1; 2), said paste comprising a mixture of a powder of heat-conducting material which sinters at a sintering temperature (T) to each of the two workpieces (1, 2), and a liquid, said powder being selected from a group of precious metals and semiprecious metals, bringing together the two workpieces (1, 2) such that the paste (5) is located between the two workpieces (1, 2) and makes surface contact between the two workpieces (1, 2), drying the paste (5), and sintering the dried powder by heating to the sintering temperature (T).