Patent ID: 8076225
Filing Date: 2011-12-13
Classification: H01L

Abstract:
1. A method for manufacturing a solid-state image capturing device that includes a plurality of light receiving sections for photoelectrically converting incident light into signal electric charge, the signal electric charge is read to an electric charge detection section through transfer sections located under respective reading gate electrodes, each electric charge detection being shared by each of the plurality of light receiving sections, the method comprising the step(s) of: a transfer section impurity region forming step of performing an ion implantation process from a first ion implantation direction, the first ion implantation direction being set so that a location of an edge surface of an impurity region of the transfer section, which is between the impurity region of the transfer section and an electric charge accumulation region of the light receiving section, coincides with a location of an edge surface of the reading gate electrode corresponding to the impurity region at the boundary between them at each reading gate electrode; an electric charge accumulation forming step of performing another ion implantation process from a second ion implantation direction, the second ion implantation direction being set so that a location of an edge surface of the electric charge accumulation region of the light receiving section and a location of an edge surface of the reading gate electrode corresponding to the electric charge accumulation region coincide at the boundary between them; and wherein the electric charge accumulation region forming step performs the second ion implantation process from a direction on the side of the light receiving section with respect to the reading gate electrode such that the electric charge accumulation region is formed so as to extend beyond said edge surface of the reading gate electrode and so as to extend underneath the impurity region of the transfer section located under the reading gate electrode.