Methods and apparatus for high voltage electrostatic chuck protection

    公开(公告)号:US11289357B2

    公开(公告)日:2022-03-29

    申请号:US16550521

    申请日:2019-08-26

    Abstract: Methods and apparatus for increasing voltage breakdown levels of an electrostatic chuck in a process chamber. A soft anodization layer with a thickness of greater than zero and less than approximately 10 microns is formed on an aluminum base of the electrostatic chuck. The soft anodization layer remains thermally elastic in a temperature range of approximately −50 degrees Celsius to approximately 100 degrees Celsius. An alumina spray coating is then applied on the soft anodization layer. The soft anodization layer provides thermal stress relief between the aluminum base and the alumina spray coating to reduce/eliminate cracking caused by the thermal expansion rate differences between the aluminum base and the alumina spray coating.

    HIGH CONDUCTANCE LOWER SHIELD FOR PROCESS CHAMBER

    公开(公告)号:US20210066051A1

    公开(公告)日:2021-03-04

    申请号:US16664155

    申请日:2019-10-25

    Abstract: Embodiments of process kits for use in a process chamber are provided herein. In some embodiments, a process kit for use in a process chamber includes an annular ring configured to surround a substrate support; and an annular lip extending from an upper surface of the annular ring, wherein the annular ring includes a plurality of ring slots extending through the annular ring and disposed at regular intervals along the annular ring, and wherein the annular lip includes a plurality of lip slots extending through the annular lip disposed at regular intervals along the annular lip.

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