LITHOGRAPHIC APPARATUS, LOCKING DEVICE, AND METHOD

    公开(公告)号:US20240319618A1

    公开(公告)日:2024-09-26

    申请号:US18578151

    申请日:2022-06-28

    CPC classification number: G03F7/70716 G03F7/70825

    Abstract: A lithographic apparatus includes an illumination system to illuminate a pattern of a patterning device, a projection system to project an image of the pattern onto a substrate, a movable stage to support the patterning device or the substrate, a slotted object, and a locking device (700) to prevent a motion of the movable stage. The locking device comprises an actuator (702) and a wheel device (704) comprising a ring feature (708) and coupled to the actuator. The actuator rotates the wheel device about a rotation axis (706). The ring feature has a width (710) defined parallel to the rotation axis. The width is variable with respect to azimuthal direction of the wheel device. The ring feature engages a slot of the slotted object. The rotating adjusts the width of the ring feature within the slot such that a relative motion between the device and the slotted object is prevented.

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