Patent ID: 7810695
Filing Date: 2010-10-12
Classification: B23K,H01L

Abstract:
1. A wire bonding machine comprising: a capillary having a bottom tip; a vibration unit; a bonding arm coupled to the capillary and the vibration unit for transmitting ultrasonic waves energy from the vibration unit to the bottom tip of the capillary, wherein the bonding arm moves in a direction of X-Y-Z at a predetermined distance; a grinding film positioned below the capillary, wherein the bottom tip of the capillary moves along a predetermined path of the grinding film by moving of the bonding arm removing particles formed at the bottom tip of the capillary; a clamp block positioned below the lower portions of the capillary and bonding arm and on top of a semiconductor device, the clamp block having an open area for wire bonding the semiconductor device; a clamp positioned on an upper portion of the capillary for securing a wire for wire bonding the semiconductor device; a cleaning die positioned on and removably attached to the clamp block and directly next to the open area for wire bonding the semiconductor device, the grinding film attached to the cleaning die; a vibration unit control circuit coupled to the vibration unit to send control signals to the vibration unit; a clamp control circuit coupled to the clamp for securing and releasing the wire; and a control mechanism coupled to the vibration unit control circuit and the clamp control circuit, the control mechanism providing automated cleaning of the bottom tip by sending a clamp control signal to allow removal of the wire, sending a vibration unit control signal to transmitting ultrasonic waves energy from the vibration unit to the bottom tip of the capillary and for detecting a present location of the bottom tip of the capillary and comparing the present location to a contact position of the cleaning die to have the bottom tip contact the cleaning die.