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    • 4. 发明申请
    • Lithographic apparatus and device manufacturing method
    • 平版印刷设备和器件制造方法
    • US20060109442A1
    • 2006-05-25
    • US10995536
    • 2004-11-24
    • Erik LoopstraPetrus BartrayAntonius Van DijsseldonkPaulus Liebregts
    • Erik LoopstraPetrus BartrayAntonius Van DijsseldonkPaulus Liebregts
    • G03B27/52
    • G03F7/70141G03F7/70091
    • A lithographic apparatus includes an illumination system configured to provide a beam of radiation and projection system configured to project the radiation beam onto a target portion of a substrate. At least one of the illumination system and the projection system includes a focusing element for reflecting or refracting the beam. A plurality of stop discs is provided, each having an aperture therethrough, together with a disc positioner configured to place one of the stop discs adjacent the focusing element to control the numerical aperture (NA) of the projection system or illumination system. The apparatus further includes a disc changer configured to select one of the stop discs and provide the selected stop disc to the disc positioner, the disc changer being external to the projection system or illumination system.
    • 光刻设备包括被配置为提供辐射束和投影系统的照明系统,其配置成将辐射束投影到基板的目标部分上。 照明系统和投影系统中的至少一个包括用于反射或折射光束的聚焦元件。 提供了多个止动盘,每个具有穿过其中的孔,以及配置成将止动盘中的一个邻近聚焦元件放置的盘定位器,以控制投影系统或照明系统的数值孔径(NA)。 该装置还包括一个换盘器,其被配置为选择一个停止盘并将所选择的停止盘提供给盘定位器,换盘器位于投影系统或照明系统的外部。