Patent ID: 7632699

Claim:
A method for manufacturing a complementary metal oxide semiconductor image sensor, comprising: preparing a semiconductor substrate where a device isolation region and an active region are defined; forming a plurality of gate polys on the active region; forming a photodiode in a portion of the semiconductor substrate located at one side of one of the plurality of gate polys; depositing an oxide layer on the semiconductor substrate including the gate polys, and selectively removing the oxide layer to form oxide layer patterns for opening a predetermined portion of the plurality of gate polys; and depositing a polysilicon layer on the oxide layer patterns, and selectively removing the polysilicon layer by performing chemical mechanical polishing to expose the oxide layer patterns while remaining the polysilicon layer in the oxide layer patterns, thereby forming a poly routing line connected to the predetermined portion of the plurality of gate polys and extending over other portions of the semiconductor substrate from the predetermined portion of the plurality of gate polys.