Patent ID: 7481351
Filing Date: 2009-01-27
Classification: B23K,H01L

Abstract:
1. A wire bonding apparatus comprising: a transfer rail accommodating at least one wiring substrate having at least one semiconductor chip; and a wire bonding unit configured to electrically connect the semiconductor chip to the wiring substrate by a wire; the wire bonding unit including: a transducer having a capillary receiving the wire; a wire clamp movable together with the capillary; a wire bonding monitoring system configured to monitor an electric current at the transducer; a controller that closes the wire clamp to clamp a disconnected wire in response to receiving a wire disconnection signal provided by the wire bonding monitoring system; and a pre-bonding stage installed on the transfer rail, the pre-bonding stage at which an end of the disconnected wire is removed from the capillary by bonding the end of the disconnected wire to the pre-bonding stage.