Patent ID: 8809191
Filing Date: 2014-08-19
Classification: H01L

Abstract:
1. A method of making a semiconductor device, comprising: providing a semiconductor wafer; forming a plurality of vias through the semiconductor wafer; forming a first insulating layer over sidewalls of the vias; depositing conductive material over the first insulating layer in the vias to form conductive vias; forming a recess in the first insulating layer around the conductive vias; removing a portion of the semiconductor wafer after forming the recess in the first insulating layer so that the conductive vias extend above a surface of the semiconductor wafer; forming a second insulating layer over the surface of the semiconductor wafer and conductive vias; removing a first portion of the second insulating layer while leaving a second portion of the second insulating layer over the surface of the semiconductor wafer around the conductive vias; and forming a bump over the conductive vias.