公开(公告)号：GB2512009A

公开(公告)日：2014-09-17

申请号：GB201412533

申请日：2013-01-10

Applicant: IBM

Inventor： BAO JUNJING ,  BONILLA GRISELDA ,  CHANDA KAUSHIK ,  CHOI SAMUEL S ,  FILIPPI RONALD G ,  GRUNOW STEPHAN ,  LUSTIG NAFTALI E ,  MOY DAN ,  SIMON ANDREW H

IPC: H01L21/768 ,  H01L23/525

Abstract: A BEOL e-fuse is disclosed which reliably blows in the via and can be formed even in the tightest pitch BEOL layers. The BEOL e-fuse can be formed utilizing a line first dual damascene process to create a sub-lithographic via to be the programmable link of the e-fuse. The sub-lithographic via can be patterned using standard lithography and the cross section of the via can be tuned to match the target programming current.