Methods of manufacturing semiconductor structures using RIE...

Semiconductor device manufacturing: process – Chemical etching – Vapor phase etching

Reexamination Certificate

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C438S714000, C438S729000, C438S742000, C438S744000

Reexamination Certificate

active

07442650

ABSTRACT:
A method for etching on a semiconductors at the back end of line using reactive ion etching. The method comprises reduced pressure atmosphere and a mixture of gases at a specific flow rate ratio during plasma generation and etching. Plasma generation is induced by a source radio frequency and anisotropic etch performance is induced by a second bias radio frequency.

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