Patent ID: 11955339
Assignee: EV GROUP E. THALLNER GMBH
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for bonding substrates comprising:
providing a first substrate having a contact face and a second substrate having a contact face;
holding the first substrate to a first holding surface of a first holding device having a plurality of fixing elements;
holding the second substrate to a second holding surface of a second holding device having a plurality of fixing elements,
wherein the contact face of the first substrate faces the contact face of the second substrate;

bonding the first substrate with the second substrate at the contact faces of the first and second substrates; and
controlling during the bonding a change in a curvature of the contact face of the first substrate and/or controlling a change in a curvature of the contact face of the second substrate, said controlling including
using a plurality of distance sensors distributed along at least one of the first holding surface or the second holding surface to detect curvatures of the first and/or second substrates and/or change in the curvatures of the first and/or second substrates, and
selectively releasing at least one fixing element of the first and/or second holding surfaces based on
i) the detected curvature of the first substrate and/or the detected curvature of the second substrate, respectively, and/or
ii) the detected change in curvature of the first substrate and/or the detected change in curvature of the second substrate, respectively, to achieve a target curvature of the contact face of the first substrate and/or a target curvature of the contact face of the second substrate.