Selective capping of copper wiring

Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Of specified configuration

Reexamination Certificate

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C257S758000, C257S762000, C438S669000, C438S652000

Reexamination Certificate

active

11265302

ABSTRACT:
Patterned copper structures are fabricated by selectively capping the copper employing selective etching and/or selective electroplating in the presence of a liner material. Apparatus for addressing the problem of an increased resistive path as electrolyte during electroetching and/or electroplating flows from the wafer edge inwards is provided.

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