公开(公告)号：JP2000195860A

公开(公告)日：2000-07-14

申请号：JP37512499

申请日：1999-12-28

Applicant: INFINEON TECHNOLOGIES CORP ,  IBM

Inventor： SCHNABEL RAINER FLORIAN ,  RONALD PHILLIPI ,  HOINKIS MARK ,  WEBER STEFAN ,  ROY IGARUDEN ,  WEIGAND PETER ,  LAWRENCE CLEVENGER

IPC: H01L23/52 ,  H01L21/285 ,  H01L21/3205 ,  H01L21/768 ,  H01L21/82

Abstract: PROBLEM TO BE SOLVED: To increase the electromigration lifetime of a semiconductor device by stacking a liner by an ionizing metal plasma physical deposition method, thereby reducing the mass carriage by electromigration. SOLUTION: A dielectric layer is made on a substrate. The dielectric layer is patterned, and a contact hole 26 is made, and conductive material is stacked on a dielectric layer so as to fill the contact hole 26 and cover the dielectric layer. Next, excess material is removed by polishing from the surface 29 so as to make a flat surface for an additional layer. Next, a liner 40 is stacked on the dielectric layer 29. This liner consists of a material having high electromigration resistance. For example, titanium(Ti) and its alloy tantalum(Ta) and its alloy, or TiN or Tan is included as such a liner material. This liner 40 is stacked, using an ionizing metal plasma physical deposition method.