Patent ID: 11894319
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method of claim 1, wherein forming the third seal ring comprises:
forming a first trench opening in a first dielectric layer over the first seal ring, the first trench opening and exposing an upper surface of the first seal ring;
depositing a conductive material in the first trench opening to form the first seal ring extension;
forming a second trench opening in a second dielectric layer over the second seal ring, the second trench opening exposing an upper surface of the second seal ring;
depositing the conductive material in the second trench opening to form the second seal ring extension; and
at the same time as bonding the first connectors of the first wafer to the second connectors of the second wafer, bonding the first seal ring extension to the second seal ring extension.