KELVIN PROBE AND KELVIN INSPECTION UNIT PROVIDED WITH SAME

A Kelvin probe according to one or more embodiments includes first and second probe pins in parallel to each other with a space in between. Each of the first and second probe pins includes: an elastic portion configured to expand and contract along a first line; a first contact on a second line parallel to the first line; and a second contact on the first line. The first and second contacts are directly electrically connected to each other, and supported such that at least one of the first and second contacts is reciprocally movable through an elastic force of the elastic portion. Both of the first contacts of the first and second probe pins are positioned between the first line of the first probe pin and the first line of the second probe pin when viewed on a plane comprising the first and second lines.