Patent ID: 7616355

Claim:
A solid-state imaging device of an amplification type, comprising a plurality of picture elements arranged two-dimensionally in a picture-element array area and disposed in a common well, each picture element including a photoelectric conversion element and a transistor for amplification, wherein a semiconductor light-receiving region of a first conductivity type included in each photoelectric conversion element is disposed in the common well, which is composed of a semiconductor of a second conductivity type formed in a semiconductor substrate of the first conductivity type, wherein contacts for supplying a reference voltage to the common well are disposed within the picture-element array area, wherein, for each transistor for amplification, a semiconductor region of the first conductivity type serving as a source or a drain is disposed in the common well, and a gate is arranged to receive an output from the light-receiving region, and wherein, for each picture element, a contact for a power source is disposed for supplying a power-source voltage for driving the transistor for amplification, one of the contacts for supplying the reference voltage and the contact for the power source are connected to a wiring arranged at predetermined intervals in the picture-element array area and another of the contacts for supplying the reference voltage and the contact for the power source are connected to a shielding layer having a light-receiving window formed above the wiring, and the wiring is disposed between two control lines for controlling a semiconductor element included in the picture element and in a layer level lower than that of the shielding layer.