Patent ID: 7723145
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A method for manufacturing a solid-state imaging device comprising a semiconductor substrate including: a plurality of light-receptive portions that are arranged one-dimensionally or two-dimensionally; a vertical transfer portion that transfers signal electric charge read out from the light-receptive portions in a vertical direction; a horizontal transfer portion that transfers the signal electric charge transferred by the vertical transfer portion in a horizontal direction; a barrier region adjacent to the horizontal transfer portion, the barrier region letting only surplus electric charge of the horizontal transfer portion pass therethough; a drain region adjacent to the barrier region, into which the surplus electric charge passing through the barrier region is discharged; and an insulation film adjacent to the drain region, the method comprising the step of: after forming the insulation film, ion-implanting an impurity at a region sandwiched between a formation region of the barrier region and the insulation film and a portion of the insulation film on a side of the barrier region so as to form the drain region, wherein the ion-implanting is conducted by setting implantation conditions so that the impurity penetrates through the insulation film and the drain region is formed beneath the insulation film.