Patent ID: 7127812
Filing Date: 2006-10-31
Classification: H05K,Y10S,Y10T

Abstract:
1. A process for producing a multi-layer printed wiring board which comprises: (a) removing a metal film covering a surface of an interlayer insulating resin layer to form openings and a register mark on a board covered with a conductor layer; (b) placing said board covered with the conductor layer with said register mark on a table of an apparatus for producing a multi-layer printed wiring board, said apparatus including an emitter of fabricating laser, a scanning head to deflect direction of a laser beam in X-Y directions, a camera to read said register mark on the board, the table to support the board covered with the conductor layer, an entry part for entrance of processing data for the board covered with the conductor layer, a memory to store the processing data or computed results, and an operation part; entering the processing data into said apparatus; reading a position of the register mark which is formed by removing the metal film on a surface of the board covered with the conductor layer by said camera, measuring the position of the register mark, making data of a result of a measurement, comparing the data of the measurement with previously entered processing data thereby generating real processing data necessary to drive said scanning head and said table, and storing the real processing data in the memory; irradiating the openings which is formed by removing said metal film with a laser beam, with said scanning head and table controlled by a control part which reads the real processing data from the memory, thereby removing said interlayer resin layer to form openings through which via holes are created; and (c) forming via holes and conductor circuits.