Patent ID: 6960123

Claim:
A cleaning sheet for probe needles, comprising: a substrate detachably fixed onto a stage moved horizontally and vertically relative to holding means for holding a probe card provided with a plurality of probe needles in a protruded form; a surface-roughened first polishing layer provided over the substrate, said first polishing layer causing tips of the probe needles to be pressed thereagainst from a vertical direction and polishing the tips of the probe needles when the tips slide in a horizontal direction; and a second polishing layer provided over the substrate adjacent to the first polishing layer as viewed in the direction of motion of the probe card, said second polishing layer having polishing grains mixed into an elastic member having a thickness greater than that of the first polishing layer and causing the tips of the probe needles to be stuck into the elastic member when the tips are pressed from the vertical direction, thereby polishing side faces of the tips of the probe needles by means of the polishing grains.