Patent ID: 11942451
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method of forming a semiconductor structure, comprising:
forming a plurality of functional dies, a plurality of first dummy dies and a plurality of second dummy dies, wherein the plurality of first dummy dies and the plurality of second dummy dies are disposed at opposite sides of a sawing region, wherein the plurality of second dummy dies surround the plurality of functional dies and the plurality of first dummy dies;
encapsulating the plurality of functional dies, the plurality of first dummy dies and the plurality of second dummy dies by an insulating material;
forming a plurality of pairs of alignment marks, the plurality of pairs of alignment marks comprising a plurality of first alignment marks over the plurality of first dummy dies and a plurality of second alignment marks over the plurality of second dummy dies;
determining a position of a sawing line in the sawing region by identifying the plurality of pairs of alignment marks; and
performing a sawing process along the sawing line.