Patent ID: 11961749
Assignee: HANGZHOU SIZONE ELECTRONIC TECHNOLOGY INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. The wafer detection device according to claim 1, wherein the wafer detecting unit includes: at least one transmittance laser generator and at least one transmittance laser receiver, and each transmittance laser receiver corresponds to one transmittance laser generator; the transmittance laser receiver is electrically connected to the detection processing unit; the transmittance laser generator emits a wafer detecting laser beam to the work plane, the wafer detecting laser beam is not blocked by the clamping jaw; the transmittance laser receiver receives the wafer detecting laser beam emitted by the corresponding transmittance laser generator and converts the optical signal of such received wafer detecting laser beam into the corresponding second electrical signal; if it can be deduced from the second electrical signal that the transmittance laser receiver can't receive the wafer detecting laser beam emitted by the corresponding transmittance laser generator, then it can be judged that the wafer is clamped by the clamping jaw.