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

Claim 0:
1. A method comprising:
bonding first connectors of a first wafer to second connectors of a second wafer, the first wafer comprising a first seal ring, the second wafer comprising a second seal ring;
forming a third seal ring surrounding the first connectors and the second connectors, the third seal ring spanning an interface between the first wafer and the second wafer, the third seal ring comprising a first seal ring extension extending from the first seal ring and a second seal ring extension extending from the second seal ring;
forming a trench through the second wafer, the trench penetrating the first wafer, the trench surrounding the first connectors and the second connectors;
filling the trench with a seal ring material to form a fourth seal ring; and
singulating the first wafer and the second wafer to singulate a first package therefrom.