Patent ID: 7285863

Claim:
A semiconductor device comprising: a pad including an electric connection region; and a protective insulating layer which is formed on the pad and has an aperture exposing the electric connection region; wherein a side surface of the protective insulating layer surrounding the electric connection region includes a tapered surface with an acute angle to a top surface of the pad; wherein the protective insulating layer includes at least a first insulating layer and a second insulating layer, each of which has a side surface exposed to the aperture; wherein the first insulating layer is positioned between the pad and the second insulating layer; and wherein the entire side surface of the first insulating layer is tapered with an acute angle to the top surface of the pad, and the entire side surface of the second insulating layer is tapered with an acute angle to the top surface of the pad, and wherein the acute angle of the entire side surface of the first insulating layer to the top surface is greater than the acute angle of the entire side surface of the second insulating layer to the top surface.