Patent ID: 7510619

Claim:
A method for filling vias in a greensheet comprising: securing and positioning a product greensheet having circuit patterns and one or more vias to be filled on a product greensheet vacuum plate having a central opening with vacuum ports at the periphery of the plate to hold the product greensheet, the product greensheet having vias to be filled so that the vias and the circuit pattern of the product greensheet are within the central opening of the vacuum plate; determining the position of the via to be filled in the product greensheet; positioning a backing filler die under the via to be filled, the backing filler die having a solid flat surface so that the solid flat surface of the backing filler die is under and flush to the via to be filled; positioning a transfer greensheet having a fixed array of filled vias over the via to be filled, with one of the filled vias being positioned over the via to be filled in the product greensheet; positioning a punch head over the via to be filled and the filled via of the transfer greensheet; activating the punch head to punch the transfer greensheet via to fill or partially fill the product greensheet via; and repeating the above steps for all the vias to be filled in the product greensheet.