Patent ID: 8658477

Claim:
A method for manufacturing a semiconductor device including an impurity layer comprising the steps of: applying a resist material on a surface of a semiconductor substrate; exposing the applied resist material using an exposure mask; forming a resist film by developing the exposed resist material; forming the impurity layer by implanting ions into the semiconductor substrate through the resist film; and forming a plurality of transfer electrodes with an insulating film interposed there between after removing the resist film, wherein the exposure mask includes: a first transmission region where a plurality of dots through which a light is shielded or transmitted are arrayed into a matrix form having rows and columns; and a second transmission region where a plurality of dots through which the light is shielded or transmitted are arrayed into a matrix form having rows and columns and is disposed adjacent to the first transmission region, wherein, the plurality of dots arrayed in a row or a column of the first transmission region, which is adjacent to the second transmission region, have an area intermediate between areas of plurality of dots arrayed on both sides of the row or the column, and positions of the first and second transmission regions are corresponded to each of the plurality of transfer electrodes.