Patent ID: 11971364
Assignee: HAMAMATSU PHOTONICS K.K.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A semiconductor device inspection method, comprising:
performing a first inspection irradiation on at least one portion in an area to be inspected of the semiconductor device to which a test signal is being input, the first inspection irradiation being for irradiating the area to be inspected with light while the test signal is being input to the semiconductor device;
outputting first information indicating presence or absence of a defective portion in an entire of the area to be inspected, based on an output signal electrically output from the semiconductor device during performing the first inspection irradiation;
determining, based on the first information, whether or not to perform a second inspection irradiation on the area to be inspected, the second inspection irradiation being for irradiating the area to be inspected with light while the test signal is being input to the semiconductor device;
when it is determined that the second inspection irradiation is to be performed, performing the second inspection irradiation on at least one portion in the area to be inspected of the semiconductor device to which the test signal is being input, the at least one portion where the second inspection irradiation is to be performed being different from the at least one portion where the first inspection irradiation has been performed;
wherein a portion where one of the first inspection irradiation or the second inspection irradiation is performed is located in each of a plurality of regions obtained by equally dividing the area to be inspected of the semiconductor device into four equal parts by a straight line passing through at least one of portions where the other one of the first inspection irradiation or the second inspection irradiation is performed, wherein a center of each of the plurality of regions defines a portion to be irradiated in the first inspection irradiation;
outputting second information indicating presence or absence of a defective portion in the entire of the area to be inspected, based on an output signal output from the semiconductor device during performing the second inspection irradiation; and
inspecting the semiconductor device, based on the first information and the second information.