Patent ID: 8096461
Filing Date: 2012-01-17
Classification: B23K,H01L

Abstract:
1. A wire-bonding machine, comprising: a main body; a fixture block provided with a chamber defined therein and a central bore formed at one side wall of the fixture block communicating with the chamber; a mounting block having a fixture member extending upwards for being mounted to the main body and an electrode clamping member extending downwards into the chamber of the fixture block; a gas supply tube connected to the chamber of the fixture block for supplying a protection gas; a cover-gas supply device having a continuous gas passage and an orifice defined therein, wherein the cover-gas supply device is mounted to the fixture block through the central bore with the continuous gas passage communicating with the chamber; a capillary tool mounted to the main body for up and down reciprocating movement within the orifice of the cover-gas supply device with respect to die pads on a chip to he bonded; and an electrode with one end thereof clamped by the electrode clamping member and the other end extending within the continuous gas passage to the orifice; wherein the protection gas flows in a steady flow field around the orifice in the continuous gas passage of the cover-gas supply device.