Single Step Electrolytic Method of Filling Through-Holes in Printed Circuit Boards and Other Substrates
A method of copper electroplating in the manufacture of printed circuit boards. The method is used for filling through-holes and micro-vias with copper. The method includes the steps of: (1) preparing an electronic substrate to receive copper electroplating thereon; (2) forming at least one of one o...
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| creator | Desalvo, Donald Decesare, William J Bellemare, Richard A Blake, Ron Gugliotti, Carmichael |
| description | A method of copper electroplating in the manufacture of printed circuit boards. The method is used for filling through-holes and micro-vias with copper. The method includes the steps of: (1) preparing an electronic substrate to receive copper electroplating thereon; (2) forming at least one of one or more through-holes and/or one or more micro-vias in the electronic substrate; and (3) electroplating copper in the at least one or more through-holes and/or one or more blind micro-vias by contacting the electronic substrate with an acid copper electrolyte. The acid copper electrolyte is used to plate the one or more through-holes and/or the one or more blind micro-vias. A first pulse reverse plating waveform sequence is used to create a copper bridge in the center of the through-holes followed by direct plating until metallization is complete. |
| format | Patent |
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The method is used for filling through-holes and micro-vias with copper. The method includes the steps of: (1) preparing an electronic substrate to receive copper electroplating thereon; (2) forming at least one of one or more through-holes and/or one or more micro-vias in the electronic substrate; and (3) electroplating copper in the at least one or more through-holes and/or one or more blind micro-vias by contacting the electronic substrate with an acid copper electrolyte. The acid copper electrolyte is used to plate the one or more through-holes and/or the one or more blind micro-vias. A first pulse reverse plating waveform sequence is used to create a copper bridge in the center of the through-holes followed by direct plating until metallization is complete.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS THEREFOR CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY PRINTED CIRCUITS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS |
| title | Single Step Electrolytic Method of Filling Through-Holes in Printed Circuit Boards and Other Substrates |
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