Patent ID: 6427325
Filing Date: 2002-08-06
Classification: G03F,H05K,Y10S,Y10T

Abstract:
A method for filling a selected number of plated through-holes comprising:providing a circuit board or card with a plurality of plated through-holes; providing a layer of a photocurable polymerizable composition onto a carrier; contacting the carrier to the circuit board or card with the layer of the photocurable polymerizable composition onto the plurality of plated through-holes; vacuum laminating said carrier to said printed circuit board or card thereby causing said photocurable polymerizable composition to flow into said plurality of plated through-holes; exposing a portion of said plurality of plated through-holes to actinic radiation through a photomask which polymerizes the photocurable polymerizable composition to provide polymerized filled plated through-holes; and developing said photocurable polymerizable composition with a solvent from those selected in said plurality of plated through-holes that were not exposed to said actinic radiation, thereby removing said composition and forming unfilled plated through-holes.