Patent ID: 9487881
Filing Date: 2016-11-08
CPC Classification: C25D

Claim Text:
1. An apparatus for electroplating inside walls of a plurality of gates of a transfer mold, the transfer mold being for encapsulating semiconductor devices, the apparatus comprising: a plurality of electrodes configured to act as anodes during electroplating, each electrode of the plurality of electrodes comprising: a head portion; and a shaft portion configured to be inserted into a respective interior space of a gate of the transfer mold; a fixture; and a plurality of through-holes in the fixture, each through-hole comprising: a counterbore configured to engage with the head portion of a respective electrode to prevent further entry of the electrode into the through-hole; and a bore for receiving the shaft portion of the respective electrode configured to electroplate the inside wall of the respective gate of the transfer mold, wherein diameters of the bores of the through-holes are smaller than the diameters of the shaft of the electrodes, and the bores of the through-holes receive the shaft of the electrodes in a slide-fit to form a mutual interference fit to thereby secure the electrodes to the fixture, wherein the shaft portions of the electrodes are configured to protrude from the fixture.