Patent ID: 7972890

Claim:
A method of manufacturing an image sensor, comprising: forming a photoelectric converter in a semiconductor substrate; forming an interlayer insulating film covering a surface of the semiconductor substrate; forming a plurality of metal wires on the interlayer insulating film, the plurality of metal wires having a plurality of inter-metal insulating films, each inter-metal insulating film of the plurality of inter-metal insulating films alternating with each metal wire of the plurality of metal wires; plasma etching a portion of the plurality of inter-metal insulating film and the interlayer insulating film to form an opening above the photoelectric converter; curing a plasma-etched surface of the opening by irradiating the plasma-etched surface of the opening with light, so as to remove damage to the plasma-etched surface by the plasma etching; and filling the opening with a light transmitter.