Patent ID: 8835269
Filing Date: 2014-09-16
Classification: H01L

Abstract:
1. A method of manufacturing a solid-state image sensor in which a plurality of photoelectric conversion elements, each including an accumulation region in which a charge accumulates, and one or more MOS transistors are formed on a semiconductor substrate, the method comprising: forming a resist pattern having an opening and a shielding portion over the semiconductor substrate; and implanting ions in the semiconductor substrate through the opening in the resist pattern, wherein during the step of forming, the resist pattern is formed such that when the semiconductor substrate is viewed from a first direction, an isolation region that is positioned between accumulation regions adjacent to one another is exposed in the opening, and when the semiconductor substrate is viewed from a different direction than the first direction, a channel region of the one or more of the MOS transistors is exposed in the opening, and the isolation region is shielded by the shielding portion, and during the step of implanting, ions irradiated in the first direction are implanted in the semiconductor substrate through the opening in the resist pattern for forming the isolation region, and ions irradiated in the different direction are implanted in the semiconductor substrate through the opening in the resist pattern for forming the channel region of the one or more MOS transistors.