Patent ID: 6017812
Filing Date: 2000-01-25
Classification: H01L

Abstract:
A bump bonding method comprising forming a ball at the tip of a wire that is inserted through a capillary, lowering said capillary while using a displacement detection apparatus to detect the vertical displacement of the capillary, detecting the position of that portion of a semiconductor integrated circuit in which an electrode is formed, based on the displacement of the capillary detected by the displacement detection apparatus when said ball abuts the semiconductor integrated circuit, pressing said ball against said electrode forming portion to form a bump pedestal, elevating said capillary a specified amount while moving it in the horizontal direction a specified amount, setting the height of a position at which the capillary is stopped based on the height of the bump pedestal detected by said displacement detection apparatus, again lowering the capillary down to said stop position height to join said wire to the bump pedestal, again elevating said capillary a specified amount, and then lifting said wire to break the joint between said bump pedestal and the wire to form a bump in the electrode forming portion of the semiconductor integrated circuit.