Patent ID: 9214440
Filing Date: 2015-12-15
Classification: H01L

Abstract:
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 top surface; applying a first silane on said top 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 sol-gel layer having a porosity of at least 10%; applying a die to said sol-gel layer; at least partially securing said die to said sol-gel layer by a die attaching compound; and, applying a mold compound at least partially over the said die and said leadframe.