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Laser Generated Conductive Lines

IP.com Disclosure Number: IPCOM000086320D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Banks, RH: AUTHOR [+4]

Abstract

A circuit substrate made of an organic material is proposed in which the circuit lines are generated by use of a laser or other high-energy beam, rather than the processes involving photolithographic techniques.

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Laser Generated Conductive Lines

A circuit substrate made of an organic material is proposed in which the circuit lines are generated by use of a laser or other high-energy beam, rather than the processes involving photolithographic techniques.

The laser is program controlled and focused so as to inscribe predetermined lines on the organic material. These narrow lines have a carbonized surface. This carbonized line has been found to be conductive although highly resistive. Copper has been electroplated onto the lines using standard electroplating processes. Conductive vias through the board were also made using the laser and the copper plating of the carbonized surfaces.

A similar process can be utilized in connection with a ceramic substrate. This type substrate is coated with an organic substance such as parylene. The lines are then inscribed by the laser beam in the parylene and electroplating applied as above.

The above is an economical manufacturing process which requires no masking and uses standard plating techniques. It is obvious that design changes are easily implemented through program changes and that parts can be easily personalized.

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