Patent ID: 7456448
Filing Date: 2008-11-25
Classification: H01L

Abstract:
1. A semiconductor device, comprising a first MIS-type transistor formed in a first region of a semiconductor region, the first region being of a first conductivity type, the first MIS-type transistor including: a first gate insulating film formed on the first region; a first gate electrode formed on the first gate insulating film; a first extension diffusion layer of a second conductivity type formed in a region of the first region under both sides the first gate electrode; a pocket diffusion layer of a first conductivity type formed in a region of the first region under both sides of the first gate electrode so as to cover a lower side of the first extension diffusion; and a first fluorine diffusion layer formed in a first channel region of the first conductivity type sandwiched between portions of the pocket diffusion layer, wherein portions of the first fluorine diffusion layer extend from each side of the portions of the pocket diffusion layer and overlap together in a region directly under the first gate electrode.