公开(公告)号：EP2313923A4

公开(公告)日：2013-02-20

申请号：EP09808777

申请日：2009-08-19

Applicant: IBM

Inventor： FAROOQ MUKTA G ,  HANNON ROBERT ,  IYER SUBRAMANIAN S ,  KOESTER STEVEN J ,  PORUSHOTHAMAN SAMPATH ,  YU ROY R

IPC: H01L27/06 ,  H01L27/105

CPC classification number: H01L27/105 ,  H01L24/11 ,  H01L27/0688 ,  H01L2224/05008 ,  H01L2224/05009 ,  H01L2224/05024 ,  H01L2224/05147 ,  H01L2224/05184 ,  H01L2224/05568 ,  H01L2224/0557 ,  H01L2924/00014 ,  H01L2924/14 ,  H01L2924/00 ,  H01L2224/05599

Abstract: A method is provided for fabricating a 3D integrated circuit structure. According to the method, a first active circuitry layer wafer is provided. The first active circuitry layer wafer comprises a P+ portion covered by a P− layer, and the P− layer includes active circuitry. The first active circuitry layer wafer is bonded face down to an interface wafer that includes a first wiring layer, and then the P+ portion of the first active circuitry layer wafer is selectively removed with respect to the P− layer of the first active circuitry layer wafer. Next, a wiring layer is fabricated on the backside of the P− layer. Also provided are a tangible computer readable medium encoded with a program for fabricating a 3D integrated circuit structure, and a 3D integrated circuit structure.