Patent ID: 7456372

Claim:
A multilayer printed wiring board manufacturing method comprising: providing a manufacturing apparatus comprising a CO 2 laser source configured to emit a laser pulse beam of 1-50 μsec, a harmonic wave generating apparatus configured to convert the laser pulse beam to a shortened wavelength beam of a second harmonic wave, a scanning head configured to deflect the shortened wavelength beam in X-Y directions, an X-Y table configured to support a multilayer printed wiring board having at least one target mark, and a camera configured to measure a position of the at least one target mark of the multilayer printed wiring board; measuring with the camera the position of the at least one target mark of the multilayer printed wiring board having an interlayer resin insulator placed on the X-Y table; generating drive data for driving at least one of the scanning head and the X-Y table based on the position of the at least one target mark and processing data of the multilayer printed wiring board; controlling at least one of the X-Y table and the scanning head based on the drive data; and applying the shortened wavelength beam of the second harmonic wave transmitted from the harmonic wave generating apparatus to the multilayer printed wiring board to form a hole in the interlayer resin layer of the multilayer printed wiring board.