NOVEL METHOD FOR FABRICATION OF EUV PHOTOMASK FIDUCIALS

    公开(公告)号:US20200050097A1

    公开(公告)日:2020-02-13

    申请号:US16059527

    申请日:2018-08-09

    Abstract: Embodiments disclosed herein include reticles for extreme ultraviolet (EUV) lithography and methods of forming such reticles. In an embodiment, the reticle may comprise a substrate and a mirror layer over the substrate. In an embodiment, the mirror layer includes alternating layers of a first mirror layer and a second mirror layer. In an embodiment, a fiducial may be formed into the mirror layer. In an embodiment, the fiducial comprises constituents of the first mirror layer and the second mirror layer. In an embodiment, an absorber layer may be formed over the mirror layer.

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