Patent ID: 7795128
Filing Date: 2010-09-14
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: forming an electrode pad to come in contact with a desirable element region or a wiring layer provided on a surface of a semiconductor substrate; forming an insulating layer having a pad opening for exposing at least a portion of a surface of the electrode pad; forming a substantially uniform intermediate layer directly covering the surface of the electrode pad through the pad opening and directly covering a portion of a surface of the insulating layer; forming a resist pattern having a window in a bump formation region; forming a bump through the window of the resist pattern to be in electrical contact with the electrode pad; removing the resist pattern; etching the intermediate layer by using the bump having a straight vertical peripheral edge as a mask to form a straight vertical peripheral edge; applying a resin insulating film on the insulating layer and on the bump, the resin insulating film being applied in two non-continuous sections, a first section of the resin insulating film directly covering the top of the bump and a second section of the resin insulating film directly covering the peripheral edge of the intermediate layer and the interface defined by the bump and the intermediate layer, the first section of the resin insulating film being separated from the second section of the resin insulating film by a portion of the bump, the second section of the resin insulating film preventing exposure of the interface, the second section of the resin insulating film being applied so that the top surface of the second section of the resin insulating film is positioned above the interface between the bump and the intermediate layer and below the top surface of the bump; and removing the first section of the resin insulating film by ashing.