Patent ID: 9557377
Date: 2017-01-31
CPC Classifications: G01N,G01R

Claim:
1. An apparatus for measuring a reaction of a semiconductor device having a wiring extending in two directions orthogonal to each other, the apparatus comprising: a light source configured to output light; a computer configured to set a scan direction which is a direction of scanning an irradiation position of the light in the semiconductor device; a light scanner electrically coupled to the computer and configured to scan the light according to the scan direction; and a detector electrically coupled to the computer and configured to measure the reaction of the semiconductor device irradiated with the light and output a measured value, wherein the computer sets the scan direction such that the scan direction intersects the wiring extending directions at an angle greater than 0° but smaller than 90° and creates a two-dimensional map indicating the reaction of the semiconductor device according to the irradiation position and the measured value by performing a coordinate transformation according to at least an angle of intersection between the scan direction and the wiring extending directions, and the reaction is a change in current value or voltage value.