Title:
【発明の名称】ワイヤボンダー用ボール形成装置
Document Type and Number:
Japanese Patent JP2904618
Kind Code:
B2
Abstract:
PURPOSE:To provide a ball forming apparatus for use in a wire bonder whereby a stable electrical discharge is ensured in order to form a ball with an optimum diameter. CONSTITUTION:A electrical discharge spark 2 is produced between a discharge electrode 19 and an auxiliary electrode 1, which is positioned in close proximity to the discharge electrode 19. This facilitates electrical discharge, whereby a stable electrical discharge is ensured without the interruption thereof even when there is a drop in the voltage between the discharge electrode 19 and a wire 17.
Inventors:
URA MASANAO
Application Number:
JP20220991A
Publication Date:
June 14, 1999
Filing Date:
July 18, 1991
Export Citation:
Assignee:
KAIJOO KK
International Classes:
H01L21/60; (IPC1-7): H01L21/60
Domestic Patent References:
| JP57102036A | ||||
| JP376238A |
Attorney, Agent or Firm:
Shoji Hagiri