Patent ID: 7062845
Filing Date: 2006-06-20
Classification: B23K,H05K,Y10T

Abstract:
1. A laser drilling system for drilling blind vias in printed circuit board panels, multichip modules and chipscale packages with top and bottom surfaces and include multiple dielectric polymer and metal layers, the system comprising: a first laser module comprising: a laser with the capability to form at least one via per pulse through one or more polymer layers wherein the vias are circular or non-circular in shape, an articulated arm adapted to move at a speed of about 200 inches per second and at an acceleration of about 5 g's or more, and a beam delivery unit attached to the articulated arm wherein beam delivery unit focuses the laser beam for use in drilling the top surface; a conveyor adapted to move panels at a constant speed with the first laser module positioned to move on a separate track from the conveyor and operable to move at a faster rate than the conveyor to drill the top surface.