Patent ID: 7301357

Claim:
A method of inspecting an electrical characteristic of a to-be-inspected object, comprising: bringing pairs of probe pins into contact with respective electrodes of at least one to-be-inspected object; simultaneously applying a voltage to the respective inspection electrodes via the pairs of probe pins by drivers of a tester, the driver being connected to the respective pairs of probe pins, thereby causing a fritting phenomenon, in which a predetermined potential inclination is formed and a current flows to break an oxide film, to occur between tips of each pair included in the pairs of probe pins; and applying an inspection signal from the drivers to the electrodes of the to-be-inspected object via the respective pairs of probe pins, thereby inspecting an electrical characteristic of the to-be-inspected object by a tester, wherein the fritting voltage and the inspection signal are applied via identical signal lines between the drivers of the tester circuit and said first probe pins.