SUBSTRATE HOLDER, LITHOGRAPHIC APPARATUS AND METHOD

    公开(公告)号:US20220283505A1

    公开(公告)日:2022-09-08

    申请号:US17636411

    申请日:2020-07-07

    Abstract: A substrate holder for supporting a substrate, a lithographic apparatus having the substrate holder and a method of supporting the substrate. The substrate holder includes a main body, a plurality of supporting pins, and a plate. The plate is positioned between a surface of the main body and a support surface formed by the plurality of supporting pins. The plate is actuatable in a direction along the plurality of supporting pins between the surface of the main body and the support surface. The substrate holder may also include a main body, a flexible member and a fixed member protruding from a surface of the main body. The flexible member defines an enclosed cavity therein and configured to form a seal with the substrate supported on the substrate holder. The substrate holder is configured to reduce pressure in the enclosed cavity of the flexible member.

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