Patent ID: 7883923

Claim:
A method, comprising: forming a semiconductor substrate including a pixel part and a peripheral part; forming an interlayer dielectric film including a metal wire in the pixel part and a metal wire in the peripheral part over the semiconductor substrate; forming a photo diode pattern over the interlayer dielectric film connected to the metal wire in the pixel part; forming a device isolation dielectric layer over the interlayer dielectric film and the photo diode pattern; forming a first via hole over the device isolation dielectric layer to partially expose the photo diode pattern; and forming a second via hole over the device isolation dielectric layer to expose the metal wire in the peripheral part, wherein said forming a photo diode pattern comprises: forming a photo diode by performing an ion implantation over a crystalline semiconductor substrate; bonding the crystalline semiconductor substrate onto the semiconductor substrate; forming hard masks over the photo diode corresponding to locations of each of the metal wires in the pixel part; and forming a device isolation trench, which selectively exposes the interlayer dielectric film, by etching the photo diode using the hard masks as an etching mask.