Insulating film for semiconductor device and semiconductor device

摘要

To provide an insulating film having a low dielectric constant and performance sufficient as an interlayer insulating film of a semiconductor device, and a semiconductor device using the insulating film. An insulating film for a semiconductor device used as an interlayer insulating film of a semiconductor device, the insulating film consisting essentially of poly- alpha , alpha -difluoroparaxylylene and having a relative dielectric constant of from 2.1 to 2.7. An insulating film for a semiconductor device used as an interlayer insulating film of a semiconductor device, the insulating film consisting essentially of poly- alpha , alpha -difluoroparaxylylene and exhibiting a step coverage of from 0.4 to 0.9. An insulating film for a semiconductor device capable of being filled in a gap, the insulating film consisting essentially of poly- alpha , alpha -difluoroparaxylylene, having a ratio (D/L) of a depth (D) and an opening width (L) of 1 or more.