Patent ID: 11935842
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method of manufacturing a semiconductor device, the method comprising:
depositing a plurality of layers over a semiconductor substrate to form a plurality of chips, individual ones of the plurality of chips having a width of about 20 mm;
grinding the semiconductor substrate, wherein during the grinding the plurality of chips is structurally supported with a first film;
before removing the first film, structurally supporting the semiconductor substrate with a second film, the second film being located on an opposite side of the semiconductor substrate from the first film;
modifying the structural support provided by the second film by patterning a trench, the trench having at least one dimension larger than 20 mm; and
removing the first film.