Patent ID: 8247261
Filing Date: 2012-08-21
Classification: H01L,Y02E,Y02P

Abstract:
1. A method comprising: providing a source substrate having a surface; disposing on said source substrate having a surface, a layer comprising a stress layer, said stress layer having a stress layer surface area in contact with and bonded to said surface of said source substrate; operatively associating a handle foil with said stress layer; and applying force to said handle foil to separate said stress layer from said source substrate, and leave on said stress layer surface a portion of said source substrate substantially corresponding to said area in contact with said surface of said source substrate, said portion being less thick than said source layer; wherein said stress layer comprises a stress layer or layers extending from and operatively associated with said source substrate, wherein said stress layer or layers comprise at least one optional adhesion layer that forms an interface with said source substrate comprising at least one of Ti/W, Ti, Cr, or Ni, operatively associated with at least one metal stress layer comprising Ni, Cr, and Fe which is opposite said interface.