Patent ID: 11933839
Assignee: TOKYO ELECTRON LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An inspection apparatus for inspecting a substrate, comprising:
a placing member on which a substrate is placed;
a holder configured to hold a probe card having probes to be in contact with the substrate;
a plurality of positioning members to be in contact with an upper surface of the placing member or a bottom surface of the holder to define a height of the placing member with respect to the probes;
an adjustment mechanism configured to adjust heights of the positioning members;
a detection device configured to detect the probes, the placing member and the positioning members; and
a controller,
wherein the controller is configured to execute:
acquiring heights of the probes based on a detection result of the probes using the detection device;
acquiring a height of the placing member based on a detection result of the placing member using the detection device;
acquiring a height of the positioning member based on a detection result of the positioning member using the detection device;
positioning the positioning member, using the adjustment mechanism, to a reference height at which an overdrive amount becomes zero, based on the detection results of the probes, the placing member, and the positioning member using the detection device; and
acquiring a height of the positioning member at which a desired overdrive amount is obtained, and raising the placing member while adjusting a driving amount of the adjustment mechanism until the placing member reaches the height of the positioning member at which the desired overdrive amount is obtained.