Patent ID: 11942332
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A method of removing a metal-containing layer from a substrate, comprising:
generating a first plasma in a process volume of a plasma chamber by providing RF power to an antenna disposed over the substrate support, wherein
a patterned device is disposed on a substrate support in the process volume, the patterned device comprising:
a patterned region and an unpatterned region;
a substrate;
a metal-containing layer formed over the substrate; and
a supporting layer disposed between the metal-containing layer and the substrate;

depositing a first film over the patterned region of the metal-containing layer with the first plasma;
removing portions of the unpatterned region of the metal-containing layer with the first plasma without depositing the first film over the unpatterned region;
changing one or more electrical characteristics of the RF power provided to the antenna disposed over the substrate support to generate a second plasma in the process volume of the plasma chamber after generating the first plasma; and
removing the first film and portions of the patterned region and the unpatterned region of the metal-containing layer with the second plasma, wherein the change in the one or more electrical characteristics of the RF power provided to the antenna causes the removal of the first film and portions of the patterned region and the unpatterned region of the metal-containing layer during the second plasma.