METHOD FOR DISCHARGING STATIC CHARGES ON RETICLE

    公开(公告)号:US20190155139A1

    公开(公告)日:2019-05-23

    申请号:US15884801

    申请日:2018-01-31

    Abstract: A reticle, a reticle container and a method for discharging static charges accumulated on a reticle are provided. The reticle includes a mask substrate, a reflective multilayer (ML) structure, a capping layer, an absorption structure and a conductive material structure. The mask substrate has a front-side surface and a back-side surface. The reflective ML structure is positioned over the front-side surface of mask substrate. The capping layer is positioned over the reflective ML structure. The absorption structure is positioned over the capping layer. The conductive material structure is positioned over a sidewall surface of the mask substrate and a sidewall surface of the absorption structure.

    APPARATUS AND METHOD FOR GENERATING EXTREME ULTRAVIOLET RADIATION

    公开(公告)号:US20190150262A1

    公开(公告)日:2019-05-16

    申请号:US15906574

    申请日:2018-02-27

    CPC classification number: H05G2/006 H05G2/008

    Abstract: A method of controlling an excitation laser includes detecting, at a droplet generator, a first signal of radiation scattered by a given target droplet irradiated by a first radiation source at a first position. The method of controlling the excitation laser further includes detecting, at the droplet generator, a second signal of radiation scattered by the given target droplet irradiated by a second radiation source at a second position a fixed distance away from the first position, and determining a speed of the given target droplet based on a time lag between the detecting of the first signal and the detecting of the second signal. The method further includes controlling a trigger time for triggering an excitation pulse for heating the given target droplet based on the determined speed of the given target droplet.

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