Method and coating material for applying electrically conductive printed patterns to insulating substrates

US4853252A · kind A · utility

Assignees

• Siemens Aktiengesellschaft · DE
• Michael Huber GmbH · DE

Inventors

• Juergen Frankel · Baldham, DE
• Antoon Mattelin · Beernem, BE
• Pol Pecceu · Brugge, BE
• Ferdinand Quella · Munich, DE
• Hans-Fr. Schmidt · Eurasburg, DE
• Luc Boone · Beernem, BE
• Sybille Von Tomkewitsch · Pöcking, DE
• Marc De Vogelaere · Berlin, DE

Key dates

• Filing date: Dec 3, 1987
• Grant date: Aug 1, 1989
• Expiry date: Dec 3, 2007

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2203/107
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method and coating material for applying electrically conductive printed patterns to insulating substrates is provided. The coating material includes a non-metallic, grainy carrier substance having metal of the oxidation degree 0 applied thereto. An energy radiation source, particularly of a deflectable laser beam, is used to secure anchoring of the carrier substance to the substrate in the region of the desired printed pattern. As a consequence of a three-dimensional arrangement of the metal, a three-dimensional nuclei distribution is produced that leads to a reliable and fast metallization of the printed pattern on the basis of chemical metal deposition. The method of the invention is especially suited for laser pattern transfer for the manufacture of printed circuit boards.