Patent ID: 8603892
Filing Date: 2013-12-10
Classification: C23C,H01L

Abstract:
1. A manufacturing method of a semiconductor device comprising: forming groove-like regions on each side of adjacent vertical elements; forming a continuous SiON film that contains more O (oxygen) than N (nitrogen) to continuously cover inner surfaces of the groove-like regions and uppermost surfaces of the adjacent vertical elements extending between adjacent groove-like regions; filling the groove-like regions with polysilazane with the SiON film interposed therebetween with the polysilazane covering an upper surface of the continuous SiON film covering the uppermost surfaces of the adjacent vertical elements extending between the adjacent groove-like regions; and forming an insulating film by reforming the polysilazane by heat treatment, wherein the adjacent vertical elements are adjacent bit lines, and the groove-like regions are regions between the adjacent bit lines.