Patent ID: 11970639
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B  H | IPC B  C  H

Claim 5:
6. A method for manufacturing a thin wafer, comprising the following steps (a) to (e) using a photocurable silicone resin composition containing a non-functional organopolysiloxane, wherein
the steps (a) and (b) of bonding a wafer to a support via a temporary adhesive layer and curing are performed in either one of the following embodiments, and steps (c) to (e) are common in both the embodiments,
embodiment (1):
(a1) providing a wafer having a circuit-forming surface on a front side and a non-circuit-forming surface on a back side, applying the wafer processing temporary adhesive of claim 1 to the circuit-forming surface of the wafer and/or the wafer-facing surface of the support and bonding them to construct a wafer laminate,
(b1) photocuring the temporary adhesive in the wafer laminate, embodiment (2):
(a2) irradiating light to the wafer processing temporary adhesive composition,
(b2) providing a wafer having a circuit-forming surface on a front side and a non-circuit-forming surface on a back side, applying the irradiated wafer processing temporary adhesive composition from step (a-2) to the circuit-forming surface of the wafer and/or the wafer-facing surface of the support and bonding them to construct a wafer laminate,
(c) grinding or polishing the non-circuit-forming surface of the wafer in the wafer laminate,
(d) processing the non-circuit-forming surface of the wafer, and
(e) peeling the processed wafer from the support.