Patent ID: 9624597
Date: 2017-04-18
CPC Classifications: C25F,H01L

Claim:
1. A method, comprising: exposing at least a portion of a workpiece to an electrolyte solution, wherein the workpiece comprises a sacrificial layer disposed between a delamination stack and a support substrate, the delamination stack comprises a process piece, the support substrate comprises an electrically insulative material, and the sacrificial layer comprises an electrically conductive material or an electrically semiconductive material; applying an electrical current through the sacrificial layer and the electrolyte solution; selectively removing the electrically conductive material or the electrically semiconductive material from the sacrificial layer during an etching process, wherein the etching process comprises forming an electro-osmotic flow of the electrolyte solution between the delamination stack and the support substrate, wherein the electro-osmotic flow extends from a surface of the electrolyte solution contained within an electrolyte vat to the electrically conductive material or the electrically semiconductive material of the sacrificial layer; and separating the delamination stack and the support substrate one from the other.