Patent ID: 7045894

Claim:
A semiconductor device, comprising: a first protection film, formed on a semiconductor substrate, the first protection film having an opening section defined therein over an electrode pad; a protrusion electrode, connected to the electrode pad at the opening section defined in the first protection film, wherein only a peripheral portion of the protrusion electrode is formed to overlap said first protection film so that a majority of the protrusion electrode does not overlap the first protection film; a second protection film formed to cover at least a gap at a boundary portion of said first protection film and said protrusion electrode, said second protection film having an opening defined therein over a top area of said protrusion electrode except a portion around the boundary portion of said first protection film and said protrusion electrode so that a majority of a top surface of the protrusion electrode is not covered by the second protection film; a conductive coating layer formed to cover the top surface of said protrusion electrode at the opening of said second protection film so that a majority of the top surface of the protrusion electrode is covered by the conductive coating layer; and wherein a top surface of the conductive layer and a top surface of the second protection film form a smooth continuous transition at an interface therebetween which is located on a sidewall of the protrusion electrode.