Patent ID: 7183176

Claim:
A method of separating a through-hole via interconnect wafer from a sacrificial wafer comprising: providing a wafer having through-holes therein to form said through-hole via wafer; providing a substrate of said sacrificial wafer; coating said substrate with a polymer layer with low adhesion to metals such as a lift-off polymer; depositing a conductive layer on said polymer; coating said conductive layer with a photoresist layer; bonding said through-hole via wafer to said sacrificial wafer wherein said photoresist layer provides said bonding; thereafter developing away said photoresist exposed in said through-holes to expose said conductive layer; filling said through-holes with conductive material by electroplating said conductive layer; and stripping said photoresist in a high frequency agitation bath wherein said photoresist separates from said through-hole interconnect wafer and wherein said filled through-holes separate from said polymer layer at an interface between said polymer layer and said conductive layer to complete said separating said through-hole via interconnect wafer from said sacrificial wafer.