Patent ID: 9362439
Filing Date: 2016-06-07
CPC Classification: B26F,H01L,Y02E,Y10T

Claim Text:
1. A method of cleaving a film from a substrate, the method comprising: providing a substrate having a top surface and a bottom surface, both the top surface and the bottom surface extending to edges of the substrate in all directions, the substrate having a top region defined between the top surface and a plane at a depth beneath the top surface, the top region extending to edges of the substrate in all directions; creating a temperature gradient at the depth and a tensile stress in the top region, such that a contrast in stress between the top region and an underlying portion of the substrate causes the top region to initiate cleaving from the underlying portion of the substrate; applying gas pressure to a side of the substrate to further cleave the top region from the underlying portion with movement constrained by a porous plate; and supplying a positive pressure through the porous plate to create an air bearing surface supporting the cleaved top region and allowing relative translation between the substrate and the porous plate.