Patent ID: 11965911
Assignee: KABUSHIKI KAISHA NIHON MICRONICS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. A position adjusting method by which a tip position of a contactor that is brought into electrical contact with an electrode of an object to be inspected is adjusted by a position adjusting unit including the contactor, a position adjusting section that adjusts the tip position of the contactor, and a load detecting section that detects a value of contact load between the contactor and the electrode, comprising steps of:
a position deriving section deriving an initial position of the contactor in a specific direction based on a relationship between an amount of contact displacement of the contactor in the specific direction and the value of contact load between the contactor and the electrode,
the position adjusting section adjusting a two dimensional position of the contactor relative to the electrode,
after adjusting the two dimensional position of the contactor, manually or automatically lowering the contactor towards the electrode until the contactor contacts the electrode, thereby causing displacement of the contactor in the specific direction,
the position deriving section obtaining at least two or more measurement results, including the amount of contact displacement of the contactor in the specific direction and the value of contact load obtained at the time, and deriving the initial position of the contactor in the specific direction using a value of change in load per unit length, which was derived using the two or more measurement results, and
a movement performing section performing a fine adjustment of the tip position of the contactor based on the initial position in the specific direction derived by the position deriving section.