Patent ID: 7682959

Claim:
A method of making a semiconductor device, comprising: providing a substrate; forming a first conductive layer over the substrate; forming a first insulating layer over the substrate and first conductive layer; removing a portion of the first insulating layer to expose the first conductive layer; forming a second conductive layer over the first conductive layer and first insulating layer, the second conductive layer having a surface; forming a second insulating layer over the first insulating layer and second conductive layer, the second insulating layer having a surface; removing a portion of the second insulating layer to expose the surface of the second conductive layer and form a sidewall of the second insulating layer between the surface of the second insulating material and surface of the second conductive layer; forming a protective insulating layer over the second insulating layer and second conductive layer, the protective insulating layer following a contour of the surface and sidewall of the second insulating layer and surface of the second conductive layer; removing a portion of the protective insulating layer to expose a portion of the surface of the second conductive layer; forming a bump over the surface of the second conductive layer and a portion of the protective insulating layer adjacent to the sidewall of the second insulating layer, wherein the protective insulating layer over the sidewall of the second insulating layer protects the second insulating layer from flux solvent during formation of the bump; and removing the protective insulating layer over the surface of the second insulating layer using the bump as a mask.