Patent ID: 11927626
Assignee: HAMAMATSU PHOTONICS K.K.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A semiconductor sample inspection device:
a reference signal output section connected to an external power supply device in electrical parallel with a semiconductor sample and configured to output a reference signal according to an output of the external power supply device;
a removal processing section configured to, based on the reference signal, perform processing for removing a noise component due to the output of the external power supply device on a test signal output from the semiconductor sample due to application of a voltage from the external power supply device, and to output the test signal on which the removal processing has been performed as a processing signal;
a gain setting section configured to, based on a strength of the processing signal, set a gain of the reference signal output section, the gain with which the reference signal is output according to the output of the external power supply device; and
an electrical characteristic measurement section configured to measure electrical characteristics of the semiconductor sample based on the processing signal, the processing signal being subjected to the removal processing performed based on the reference signal from the reference signal output section for which the gain has been set by the gain setting section,
wherein the semiconductor sample inspection device measures electrical characteristics of the semiconductor sample to which a voltage is being applied by an external power supply device and which is being irradiated and scanned with light, and detects a defective portion of the semiconductor sample based on the electrical characteristics.