Patent ID: 7309891
Filing Date: 2007-12-18
Classification: H01L

Abstract:
1. A semiconductor integrated circuit device comprising: a semiconductor substrate; first gate electrodes formed above the semiconductor substrate; second gate electrodes formed above the semiconductor substrate; first diffusion layers each formed in the semiconductor substrate below one of the side surfaces of the first gate electrode; second diffusion layers each formed in a portion of the semiconductor substrate which lies between a portion lying below the other side surface of the first gate electrode and a portion lying below one of the side surfaces of the second gate electrode; contact electrodes electrically connected to the first diffusion layers; a first insulating film which is formed into a shape to have concaves between the first gate electrodes and the second gate electrodes; a second insulating film which is formed on the first insulating film, the second insulating film being formed to fill the concaves and a portion between the first and second gate electrodes having a multi-layered structure containing the first and second insulating films, a hydrogen content in the first insulating film being less than that in the second insulating film; a third insulating film formed on the first diffusion layers, first gate electrodes, second diffusion layers and second gate electrodes with the second insulating film disposed therebetween in at least a partial region, a position of the lowest portion of the third insulating film which lies on the second diffusion layer is set higher than a position of the lowest portion of a portion which is formed in contact with the contact electrode on the first diffusion layer; and an inter-level insulating film formed on the third insulating film and formed of a material different from the third insulating film.