DRY ETCH BACK SUBSTRATE INTERCONNECTIONS

DRY ETCH BACK SUBSTRATE INTERCONNECTIONS

A method of forming electrical interconnections comprises patterning a trace on a dielectric layer and then masking the dielectric layer for plating. The dielectric layer is plated to form electrical interconnections. After plating the masking is removed. A laser etch back of the trace is performed...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KANG, Kuiwon, TONG, Jialing, BUOT, Joan Rey Villarba
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROFORMING
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:A method of forming electrical interconnections comprises patterning a trace on a dielectric layer and then masking the dielectric layer for plating. The dielectric layer is plated to form electrical interconnections. After plating the masking is removed. A laser etch back of the trace is performed after removing the masking, in which the laser etch back removes tails on the trace. After the laser etch back, the patterned traces and the dielectric layer are cleaned.