Patent ID: 9054100
Filing Date: 2015-06-09
Classification: H01L

Abstract:
1. A method of making a semiconductor device, comprising: providing a semiconductor die; forming a plurality of composite bump structures over a surface of the semiconductor die; providing a substrate; forming a patterning layer over the substrate, the patterning layer including a surface opposite the substrate; removing a first portion of the patterning layer to form an opening to expose the substrate and conductive layer; removing a second portion of the patterning layer adjacent to the opening to form a sloped surface in the patterning layer, the sloped surface extending from the surface of the patterning layer down to the substrate; disposing the semiconductor die over the substrate; and depositing an underfill material over the surface of the patterning layer, wherein the underfill material flows down the sloped surface to cover an area between the semiconductor die and substrate around the composite bump structures.