<p>A chip driver (10) is capable of moving a chip part (42) in the direction of a cell, while holding the chip part formed in the direction of the cell inside the dish (22) at a predetermined angle with respect to a flexible lever part. A first area which at least partially contacts with the cell with a predetermined pressure is formed in a cross-section which includes the tip of the lever part and is formed along the extending direction of the tip of the lever part.</p>
