Patent ID: 9573804
Date: 2017-02-21
CPC Classifications: B81B,B81C,C23F,H01L,Y10T

Claim:
1. A method for bonding at least two substrates using an intermediate metal film for providing the bonding, said method comprising the following steps of: a) providing said two substrates, wherein at least one substrate comprises glass, silicon, ceramic or a combination thereof; b) depositing said metal film on at least a part of a surface of a first substrate of the two substrates; c) bringing a surface of the second substrate into contact with said metal film on said surface of the first substrate such that an initial bonding between the second substrate and the metal film on the first substrate is provided; and d) at least locally strengthening the bonding between the second substrate and the metal film on the first substrate; wherein the method further comprises a step of cleaning the first substrate and/or the second substrate at least previous to step (b) and/or step (c) in order to enhance the strength of said initial bond between the second substrate and the metal film on the first substrate.