Patent ID: 9731370
Date: 2017-08-15
CPC Classifications: B23K,H01L

Claim:
1. A method of forming cooling structures for a semiconductor module, the method comprising: providing a substrate having a metallized side; welding a plurality of cooling structures to the metallized side of the substrate, each of the cooling structures comprising a plurality of distinct weld beads disposed in a stacked arrangement extending away from the substrate, wherein a previously formed weld bead sufficiently solidifies before a successive weld bead is formed thereon, wherein a first end of the stacked arrangement is attached to the metallized side whereas a second end of the stacked arrangement is free standing; and attaching a cooler to a periphery of the metallized side of the substrate, the periphery being free of the cooling structures, wherein the cooling structures extend away from the substrate into a recessed region of the cooler.