Patent ID: 7888771
Filing Date: 2011-02-15
Classification: H01L,Y10S

Abstract:
1. An electronic fuse (“E-fuse”) comprising: a silicon substrate; a well of a first conductivity type formed in the silicon substrate; a first polysilicon structure formed over a first portion of the well; a second polysilicon structure formed over a second portion of the well spaced apart from the first polysilicon structure by a spacing distance so as to form a gap between the first polysilicon structure and the second polysilicon structure; a silicide filament link extending along the gap disposed between the first polysilicon structure and the second polysilicon structure; a first diffusion of a second conductivity type formed in the well; a second diffusion of the first conductivity type formed in the well; and a lightly doped diffusion of the second conductivity type formed in the well between the first diffusion and the second diffusion.