METHOD OF MANUFACTURING A MEMBRANE ASSEMBLY

    公开(公告)号:US20220057708A1

    公开(公告)日:2022-02-24

    申请号:US17413845

    申请日:2019-12-16

    IPC分类号: G03F1/64 G03F7/20

    摘要: A method of manufacturing a membrane assembly for EUV lithography, wherein a layer which forms at least part of a pellicle membrane is provided after one or more etching steps which define a pellicle border holding the pellicle membrane. Also provided is a pellicle substrate, the substrate including: a stack having a front face and back face, wherein one or more layers on the back face of the stack have been selectively removed to define a pellicle border region for holding the pellicle membrane before the layer which forms at least part of a pellicle membrane has been provided.