Patent ID: 8383497

Claim:
A method for manufacturing a solid-state image sensor having a plurality of pixels formed on a semiconductor substrate, each pixel including a photoelectric converter, a charge-voltage converter, and a gate for forming a channel for transferring charges generated in the photoelectric converter to the charge-voltage converter, the method comprising: an ion implantation step of implanting ions into target regions of the semiconductor substrate, where the photoelectric converters are to be formed, wherein said ion implantation step is performed N times (N being a natural number equal to 2 or more), in each of said ion implantation steps, the ions are implanted along a direction with an inclined angle with respect to a normal to a surface of the semiconductor substrate, the target regions where the ions are implanted are different in each of said ion implantation steps, and for each of said ion implantation steps, a mask is formed on the semiconductor substrate, having an opening for every N pixels, a plurality of the openings periodically arranged in a direction along an intersection line between the surface of the semiconductor substrate and a plane determined by the normal and the direction with the inclined angle.