Patent ID: 11915915
Assignee: APPLIED MATERIALS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 14:
15. An apparatus for depositing copper onto a substrate, comprising:
a physical vapor deposition (PVD) chamber with a processing volume that is configured to deposit the copper on the substrate and configured to reflow the copper deposited on the substrate using a radiant energy reflector assembly with an annular shape;
a substrate support that is configured to hold the substrate for processing within the PVD chamber;
the radiant energy reflector assembly surrounds the substrate support and is configured to direct radiant energy towards a bottom surface of the substrate;
one or more of a plurality of permanent magnets each embedded in the radiant energy reflector assembly in a vertical pole orientation that is configured to form magnetic field lines between a south pole and a north pole of each one of the plurality of permanent magnets, the one or more of the plurality of permanent magnets is spaced symmetrically around the radiant energy reflector assembly in respective one or more insertion holes;
an annular recess formed in the radiant energy reflector assembly above and outer of the one or more insertion holes; and
an annular overhang formed above the annular recess of the radiant energy reflector assembly and above a portion of each of the one or more insertion holes, wherein the annular overhang is configured to retain the one or more of the plurality of permanent magnets at a top by limiting upward movement of the one or more of the plurality of permanent magnets.