Patent ID: 11946881
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 17:
18. The inspection apparatus of claim 17, wherein the second probe comprises a second probe tip in which an emitter and a detector are embedded, the emitter being configured to emit a signal having the frequency in the range of 0.1 THz to 10 THz to the wafer and the detector being configured to detect the signal emitted from the emitter and reflected by the wafer,
wherein the emitter comprises:
a third electrode and a fourth electrode; and
a second photo switch connected to the third electrode and the fourth electrode, and

wherein the detector comprises:
a fifth electrode and a sixth electrode; and
a third photo switch connected to the fifth electrode and the sixth electrode.