Patent ID: 9492986
Filing Date: 2016-11-15
CPC Classification: B32B,H01L,Y10T

Claim Text:
1. A method for separating a supporting member and a silicon wafer from each other which are included in a laminate, the laminate including: the supporting member which is light transmissive; the silicon wafer supported by the supporting member; an adhesive layer provided on a surface of the silicon wafer, wherein said surface faces toward the supporting member; and a release layer which is made of an inorganic material and is provided between the supporting member and the silicon wafer, wherein the release layer has a property that changes so that the release layer has a reduced material strength when it absorbs light coming through the supporting member, wherein the supporting member, the release layer, the adhesive layer, and the silicon wafer are stacked together in this order in the laminate, said method comprising changing the property of the release layer so that the release layer has a reduced material strength by irradiating the release layer with light through the supporting member; and breaking the release layer.