Patent ID: 9601414
Date: 2017-03-21
CPC Classifications: H01L

Claim:
1. A method for inhibiting or preventing delamination at the interface of the die attach/mold compound and the die pad of a semiconductor device comprising: providing a leadframe having a first surface; applying a first silane on said first surface of said leadframe to form a first coating layer, said first silane includes at least one functional group selected from a sulfur functional group, a nitrogen functional group, and a phosphorus functional group; applying a second silane to said first coating layer to form a second coating layer, said second silane formed of one or more different compounds from said first silane; heating said first and second coating layers to form a porous layer having a porosity of at least 10%; applying a die to said porous layer; at least partially securing said die to said porous layer by a die attaching compound; and applying a mold compound at least partially over the said die and said leadframe.