CO2 laser hole drilling methods include direct method and Conformal mask into a hole two. Direct drilling technique is equipment main control system of laser beam passing through the diameter of the beam modulation with a diameter of holes on a printed circuit board by processing the same, without copper foil hole processing directly on the insulator surface. Conformal mask technique is in the printed circuit board surface coated with a layer mask, using conventional methods after exposure/developing/etching to remove surface of copper foil surface Conformal window. Then these holes is greater than the diameter of the laser beam is used, remove exposed layers of resin.
CO2 laser drilling of different processing methods
- Dec 02, 2016-