Patent ID: 6591490
Filing Date: 2003-07-15
Classification: H05K,Y10S,Y10T

Abstract:
A method of constructing a multilayer electric apparatus, comprising the steps of:(a) providing a first dielectric layer; (b) forming a set of conductive features and a plurality of fiducial markings, each having a location, on said first dielectric layer, said conductive features and said plurality of fiducial markings formed in mutual reference to each other so that their relative locations are known to a first tolerance; (c) storing a pattern of information in a computer readable format, said pattern corresponding to a desired photoresist exposure pattern for a second layer of said multilayer electric apparatus; (d) measuring said locations of each said fiducial markings on said first layer to form a set of measured locations; (e) altering said pattern of information in correspondence to said set of measured locations; (f) providing a second dielectric layer bonded to a conductive layer that is covered by a photoresist layer; (g) using said pattern of information to control a laser to selectively expose said photoresist layer; and (h) joining said first and second layers to each other.