Patent ID: 8680880

Claim:
A method of conducting an electrical test of an integrated circuit, comprising: a first step for determining at least one selected from a group including whether or not a chuck top for receiving said integrated circuit exists near a probe card for transmitting and receiving electrical signals relative to said integrated circuit, whether or not said integrated circuit is under test, and whether or not said probe card has an adequate temperature; a second step for adjusting power for heating to be supplied to a heating element provided in said probe card according to a determination result in said first step; wherein said probe card includes a probe base plate, the probe base plate having a multilayer ceramic base plate and a flexible multilayer sheet provided on the underside of the ceramic base plate, and said ceramic base plate including a plural of heating layers as said heating element; and wherein said probe card is heated by said heating element so that the thermal expansion rate of said probe card may become approximately the same as the thermal expansion rate of said integrated circuit during testing of the integrated circuit.