Patent ID: 7285482

Claim:
A method for producing a solid-state imaging device in which a plurality of pixels are arranged two-dimensionally so as to form a photosensitive region, each of the pixels including a photodiode that photoelectrically converts incident light to store a signal charge and read-out elements for reading out the signal charge from the photodiode, and a vertical driving circuit for driving the plurality of pixels in the photosensitive region in a row direction, a horizontal driving circuit for driving the same in a column direction and an amplify circuit for amplifying an output signal are formed with metal oxide semiconductor (MOS) transistors, the method comprising: forming an element isolation region with a STI (Shallow Trench Isolation) structure between the plurality of photodiodes and the plurality of MOS transistors; forming a gate oxide film of the MOS transistors to have a thickness of 10 nm or less; implanting ions in source and drain regions of the MOS transistors; and activating the implanted ions with a heat treatment; wherein all of heat treatment processes after formation of gates of the MOS transistors including a heat treatment process for activating the implanted ions are performed at a temperature range that does not exceed 900° C.