| 摘要 |
PROBLEM TO BE SOLVED: To obtain an accurate wire loop form by a method wherein, after a ball is bonded to a first bonding point, a capillary is made to ascend while drawing out a wire from the tip, moved in the direction of a second bonding point, and then made to ascend upward. SOLUTION: After a ball formed at a wire tip is bonded to a first bonding point A, a capillary 4 ascends up to a point B while drawing out a wire 3. The capillary 4 moves from the point B to a point C in the direction of a second bonding point G. Next the capillary 4 ascends up to an obliquely upward point D in the direction of a second bonding point G, while drawing out the wire 3. The capillary 4 descends, moves, pulls the wire 3 and gives it tension. A bulge in the lower part of a wire form 34 is absorbed, and a wire form 35 having an ideal wire length is obtained. Thereby an accurate wire loop form of a low wire loop or a short wire loop can be realized. |
