Patent ID: 6564451
Filing Date: 2003-05-20
Classification: H05K,Y10T

Abstract:
A hole filling method for a printed wiring board having an interlayer connection hole, comprising the steps of:preparing first and second printed wiring boards each of which has the interlayer connection hole; placing said first printed wiring board on a bottom plate; placing on said first printed wiring board a first hole guide plate having a first guide hole formed at a position corresponding to the interlayer connection hole of said first printed wiring board in such a manner that said first guide hole is coincident with the interlayer connection hole of said first printed wiring board; superposing a hole filling resin on said first hole guide plate; placing on said hole filling resin a second hole guide plate having a second guide hole formed at a position corresponding to the interlayer connection hole of said second printed wiring board; placing on said second hole guide plate said second printed wiring board in such a manner that the interlayer connection hole of said second printed wiring board is coincident with the second guide hole of said second hole guide plate; placing a top plate on said second printed wiring board to form a stacked assembly which comprises said first printed wiring board, said first hole guide plate, said hole filling resin, said second hole guide plate, and said second printed wiring board between said bottom plate and said top plate; and vacuum-pressing said stacked assembly between said bottom plate and said top plate to simultaneously fill the interlayer connection holes of said first and said second printed wiring boards with a part of the hole filling resin.