Patent ID: 8243176

Claim:
A solid-state image sensor, comprising: a semiconductor substrate; a plurality of pixels arranged on the semiconductor substrate and respectively including photoelectric conversion regions: and an isolation region electrically isolating the pixels from one another, wherein a first pixel of the pixels includes a first photoelectric conversion region and a first color filter having a peak of its optical transmission in a first wavelength range, a second pixel of the pixels adjacent to the first pixel includes a second photoelectric conversion region and a second color filter having peaks in its optical transmission in the first wavelength range and a second wavelength range including shorter wavelengths than the first wavelength range, a deep portion of the first photoelectric conversion region partially extends across the isolation region to reach a portion under the second photoelectric conversion region, and a portion of the first photoelectric conversion region included in the second pixel has an impurity concentration lower than that in a portion of the first photoelectric conversion region included in the first pixel.