Metal fusion bonding – Process – Using high frequency vibratory energy
Patent
1989-08-16
1991-07-16
Heinrich, Sam
Metal fusion bonding
Process
Using high frequency vibratory energy
228111, 228219, 228179, H01L 21607, B23K 2010
Patent
active
050318217
ABSTRACT:
The present invention is characterized in that, in a ball wedge bonding using a fine bonding wire precoated with a thin insulating layer, ultrasonic vibration is applied to a capillary to effect the delivery of the wire smoothly during movement of the capillary to a second bonding point while delivering the wire after ball bonding at a first bonding point.
REFERENCES:
patent: 3912900 (1975-10-01), Arnett
patent: 4040885 (1977-08-01), Hight et al.
patent: 4564734 (1986-01-01), Okikawa
patent: 4580713 (1986-04-01), Sekibata et al.
patent: 4597522 (1986-07-01), Kobayashi
Kaneda Tsuyoshi
Mikino Hiroshi
Okikawa Susumu
Onodera Atsushi
Satou Toshihiro
Heinrich Sam
Hitachi , Ltd.
Hitachi Microcomputer & Engineering, Ltd.
Hitachi Tokyo Electronics Co. Ltd.
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