Patent ID: 7977760

Claim:
A photoelectric conversion device comprising a silicon substrate, a photoelectric conversion element on a principal plane of said silicon substrate, and a transfer MOS transistor on said principal plane of said silicon substrate, for transferring a signal from said photoelectric conversion element, wherein said principal plane forms an off-angle θ with a reference (1 0 0) plane within a range of 3.5°≦θ≦4.5°, wherein two planes opposite to each other and perpendicular to said reference (100) plane form an angle 90°-θ to said principal plane, wherein a semiconductor region constituting said photoelectric conversion element is arranged under a part of a gate electrode of said transfer MOS transistor, and wherein an angle α is formed by a channel length direction of said gate electrode of said MOS transistor, on said reference (1 0 0) plane, and a two-planes direction of said two planes opposite to each other and perpendicular to said reference (1 0 0) plane, wherein said angle α is 45°.