Patent ID: 8461010
Filing Date: 2013-06-11
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: preparing a semiconductor substrate having a first impurity-diffusing layer of a first conductivity type and a second impurity-diffusing layer of a second conductivity type different from the first conductivity type, both of which are formed in a surface layer; forming an interlayer insulating film on said semiconductor substrate; patterning said interlayer insulating film so that a first opening is formed above said first impurity-diffusing layer and a second opening is formed above a gap region, which is a region between said first impurity-diffusing layer and said second impurity-diffusing layer immediately adjacent to said first impurity-diffusing layer above which said first opening is formed; and injecting an impurity to said semiconductor substrate through said first and said second openings, wherein said first impurity-diffusing layer is formed in a region having said second conductivity type, and said first impurity-diffusing layer and said region constitutes a diode, and wherein said second impurity-diffusing layer functions as a contact layer of said region of said second conductivity type, wherein an impurity injected in said injecting an impurity is selected from a group consisting of fluorine (F), silicon (Si), carbon (C) and Germanium (Ge), and wherein said semiconductor substrate is provided with a polysilicon film in said gap region, and wherein said patterning said interlayer insulating film includes forming said second opening by utilizing said polysilicon film as an etch stop.