Patent ID: 6846705

Claim:
A method for fabricating a complementary metal oxide semiconductor (CMOS) image sensor, comprising the steps of: forming a semiconductor substrate structure including a fuse and a pad deposited respectively in a redundancy region and a pad region of a substrate and a passivation layer deposited over the semiconductor substrate structure, wherein the pad is insulated from the fuse by an insulation layer; etching a portion of the passivation layer disposed above the pad to open the pad and simultaneously etching another portion of the passivation layer and a partial portion of the insulation layer disposed above the fuse with use of a photoresist pattern as an etch mask; forming an over coating layer (OCL) pattern on the photoresist, the OCL pattern masking the pad; etching the exposed partial portion of the insulation layer with use of the photoresist pattern as an etch mask to open and then cut the fuse; and removing the OCL pattern and the photoresist pattern.