Patent ID: 8950459
Filing Date: 2015-02-10
Classification: B32B,H01L,Y10T

Abstract:
1. A system for debonding a device wafer from a carrier wafer, the device wafer temporarily bonded to the carrier wafer, the system comprising: a wafer support structure configured for holding a wafer stack comprising the carrier wafer temporarily bonded to the device wafer by an adhesive layer; a crack initiator configured to initiate a crack in the adhesive layer by introducing a controlled perturbation with a tip of the crack initiator near an edge of the adhesive layer; and a holdback device comprising a wafer contact surface, the wafer contact surface comprising: wherein the first portion of the holdback device applies a controlled force to the first side of the carrier wafer, the controlled force flexing the carrier wafer away from the device wafer, the flexing used to control propagation of the crack during debonding.