Substrate processing apparatus and substrate alignment method using the same

    公开(公告)号:US12172313B2

    公开(公告)日:2024-12-24

    申请号:US17957967

    申请日:2022-09-30

    Abstract: A method includes performing a substrate processing process by carrying a substrate into a chamber, and disposing the substrate in a loading region of the chamber, capturing an image of a lower surface of the substrate to acquire a first image, identifying particle patterns formed on the lower surface of the substrate in the substrate processing process, and an edge of the substrate, from the first image, calculating a first alignment error value of a deviation between an approximate position value for the center of the loading region calculated from the particle patterns and an approximate position value for a center of the substrate calculated from the edge of the substrate, and determining a point in time for teaching a transfer robot that deposits the substrate into the chamber, based on the first alignment error value.

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