EXTREME ULTRAVIOLET LIGHT GENERATING DEVICE

    公开(公告)号:US20250081320A1

    公开(公告)日:2025-03-06

    申请号:US18638916

    申请日:2024-04-18

    Abstract: An extreme ultraviolet (EUV) light generating device includes a vessel having an internal space, a droplet generator generating droplets to be supplied to the internal space, a droplet emitter emitting the droplets generated by the droplet generator to the internal space, a laser light source generating a laser beam to generate EUV light by reaction with the droplets, a condensing mirror adjacent to the laser light source to at least partially surround the laser light source and concentrating EUV light on an intermediate focus (IF), and gas lock nozzles around the IF to respectively constitute rows and ejecting a flow control gas to the internal space, wherein a tilted direction of a gas lock nozzle in at least one of the rows is tilted in a direction consistent with a tilted direction of a sidewall of the vessel with respect to a central axis direction of the internal space.

    TARGET DEBRIS COLLECTION DEVICE AND EXTREME ULTRAVIOLET LIGHT SOURCE APPARATUS INCLUDING THE SAME

    公开(公告)号:US20210059035A1

    公开(公告)日:2021-02-25

    申请号:US16835708

    申请日:2020-03-31

    Abstract: A target debris collection device for extreme ultraviolet (EUV) light source apparatus, includes a baffle body extending within an EUV vessel between a collector and an outlet port of the EUV vessel to allow EUV light reflected from the collector to pass through an internal transmissive region thereof, a discharge plate provided in a first end portion of the baffle body adjacent to the collector to collect the target material debris on an inner surface of the baffle body, a guide structure to guide the target material debris collected in the discharge plate to a collection tank, and a first heating member provided in the guide structure to prevent the target material debris from being solidified.

    EXTREME ULTRAVIOLET LIGHT SOURCE DEVICE
    14.
    发明公开

    公开(公告)号:US20240121877A1

    公开(公告)日:2024-04-11

    申请号:US18338789

    申请日:2023-06-21

    CPC classification number: H05G2/003 G03F7/70033 G03F7/70916 H05G2/008 G21K1/06

    Abstract: An extreme ultraviolet light source device includes a chamber having a lower surface on which a condensing mirror is arranged, an intermediate focus, and a side surface between the lower surface and an upper surface a first exhaust port and a second exhaust port on the upper surface and spaced apart from the intermediate focus; a droplet supply adjacent to the side surface of the chamber, and configured to supply a droplet to generate the extreme ultraviolet light into the chamber; a light source configured to generate the extreme ultraviolet light by oscillating a laser; a catch adjacent to the side surface of the chamber, opposite to the droplet supply, and configured to receive the droplet discharged from the droplet supply unit; a first exhaust connected to the first exhaust port; and a second exhaust adjacent to the upper surface of the chamber, and connected to the second exhaust port.

    WAFER CHUCK TABLE AND WAFER CHUCK SYSTEM
    16.
    发明公开

    公开(公告)号:US20230207369A1

    公开(公告)日:2023-06-29

    申请号:US17893659

    申请日:2022-08-23

    CPC classification number: H01L21/6833 H01L21/68742 H01L21/6875

    Abstract: A wafer chuck table includes a center plate having a plurality of first protrusions each having an upper end at least partially defining a first reference plane, segmented plates arranged around the center plate and having a plurality of second protrusions, each having an upper end at least partially defining a second reference plane such that the segmented plates have separate, respective pluralities of second protrusions at least partially defining separate, respective second reference planes, and driving units configured to adjust an inclination angle of the segmented plates with respect to the center plate so that the first reference plane and the separate, respective second reference planes are coplanar.

    APPARATUS AND METHOD FOR CONTROLLING CHUCKING FORCE

    公开(公告)号:US20230191547A1

    公开(公告)日:2023-06-22

    申请号:US17940265

    申请日:2022-09-08

    CPC classification number: B23Q3/15 H01L21/6833

    Abstract: An apparatus includes a chuck having an upper surface configured to support a substrate; a fixing unit configured to generate chucking force to fix the substrate to the chuck in a first perpendicular direction and applying the chucking force to the substrate; and a controller configured to divide the chuck into a plurality of zones on a plane perpendicular to the first direction, based on reference overlay distribution corresponding to a degree of overlay deterioration when the substrate is fixed to the upper surface of the chuck, and individually control respective magnitudes of the chucking force applied to each of the plurality of zones. The controller is configured to reduce a magnitude of chucking force applied to a zone including a region having a high degree of overlay deterioration, among the plurality of zones, in the reference overlay distribution.

    TARGET DEBRIS COLLECTION DEVICE AND EXTREME ULTRAVIOLET LIGHT SOURCE APPARATUS INCLUDING THE SAME

    公开(公告)号:US20220113642A1

    公开(公告)日:2022-04-14

    申请号:US17555985

    申请日:2021-12-20

    Abstract: A target debris collection device for extreme ultraviolet (EUV) light source apparatus, includes a baffle body extending within an EUV vessel between a collector and an outlet port of the EUV vessel to allow EUV light reflected from the collector to pass through an internal transmissive region thereof, a discharge plate provided in a first end portion of the baffle body adjacent to the collector to collect the target material debris on an inner surface of the baffle body, a guide structure to guide the target material debris collected in the discharge plate to a collection tank, and a first heating member provided in the guide structure to prevent the target material debris from being solidified.

    PELLICLE FOR REFLECTIVE MASK
    19.
    发明申请

    公开(公告)号:US20210116802A1

    公开(公告)日:2021-04-22

    申请号:US16922328

    申请日:2020-07-07

    Abstract: A pellicle for a reflective mask includes a pellicle body, a pellicle frame below the pellicle body to support the pellicle body, and a pattern structure in at least a part of a surface of the pellicle body, wherein the pattern structure includes a plurality of patterns.

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