| 摘要 |
PROBLEM TO BE SOLVED: To provide a bump-forming method, capable of stably cutting wires. SOLUTION: A wire 12, passing through a hole 11a of a capillary 11, is heated at the top end to form a ball 12a which is then pressed and bonded to a terminal electrode 14. Thereafter, only the capillary 11 is moved up and a current/voltage is applied to a discharge electrode 15 to cause an electric discharge at the top end of a hole 11a. This causes the wire 12 to be cracked and the wire 12 to be cut off at the hole end of the capillary 11. |
