Patent ID: 9623449
Date: 2017-04-18
CPC Classifications: B08B

Claim:
1. A dielectric window cleaning apparatus for cleaning a dielectric window of a plasma processing device wherein the dielectric window is used to transmit RF or microwave energy during plasma processing, the dielectric window cleaning apparatus comprising: a window support base comprising a window contacting surface configured to support an underside of the dielectric window; a fluid containing enclosure comprising at least one overflow containment sidewall, wherein the fluid containing enclosure is located at least partially under and at least partially around a portion of the window support base; a window rotating mechanism operatively connected to the window support base, wherein the window rotating mechanism rotates the window support base; a spray arm in fluid communication with a fluid source and comprising a fluid flow channel, wherein the spray arm comprises an operational position and a loading position, wherein when the spray arm is positioned in the operational position the fluid flow channel is at least partially disposed directly above the window support base, and when in the loading position the fluid flow channel is not disposed directly above the window support base; and multiple fluid spraying nozzles that each expel fluid from the fluid flow channel in a window cleansing spray, wherein the window cleansing spray from one of the fluid spraying nozzles overlaps with the window cleansing spray of at least another fluid spraying nozzle, and wherein the window cleansing spray forms a wall of fluid shaped to overlap and spray an upper surface of the dielectric window; wherein the dielectric window cleaning apparatus is configured to clean the upper surface of the dielectric window from contaminants deposited on the dielectric window during plasma processing.