Lam Research Corporation

Butsurin Jinnai

Joydeep Guha

Aaron Eppler

Sanket Sant

Jun Hee Han

A system and method of ion milling performed in a plasma etch system including a plasma etch chamber, multiple process gas sources coupled to the plasma etch chamber, a radio frequency bias source and a controller. The plasma etch chamber including a substrate support. The substrate support being a non-pivoting and non-rotating substrate support. The substrate support capable of supporting a substrate to be processed on a top surface of the substrate support without use of a mechanical clamp device. The plasma etch chamber also including an upper electrode disposed opposite from the top surface of the substrate support. The radio frequency bias source is coupled to the substrate support. The controller is coupled to the plasma etch chamber, the multiple process gas sources and the radio frequency bias source. The controller including logic stored on computer readable media for performing an ion milling process in the plasma etch chamber.

System, method and apparatus for ion milling in a plasma etch chamber

A method for reducing contamination in an etch chamber is provided. A substrate with a metal containing layer is placed in the etch chamber. The metal containing layer is etched, producing nonvolatile metal residue deposits on surfaces of the etch chamber, wherein some of the metal residue of the metal residue deposits is in a first state. The substrate is removed from the etch chamber. The chamber is conditioned by converting metal residue in the first state to metal residue in a second state, where metal residue in the second state has stronger adhesion to surfaces of the etch chamber than metal residue in the first state.

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Fremont, CA, United States of America

Butsurin Jinnai