Patent ID: 11862583
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A method of fabricating flash memory semiconductor dies from a semiconductor wafer, the method comprising:
receiving the semiconductor wafer, the semiconductor wafer having flash memory integrated circuits formed in an active surface of the semiconductor wafer and the semiconductor wafer thinned by the steps of:
forming one or more layers of multiple voids within an interior of the semiconductor wafer parallel to the active surface of the semiconductor wafer by applying a laser to converge at multiple focal points in the one or more layers, and
separating the semiconductor wafer into a first portion and a second portion at the one or more layers of multiple voids, the first portion comprising the active surface; and

dicing the flash memory semiconductor dies from the semiconductor wafer.