Radiation Source Apparatus
    3.
    发明申请

    公开(公告)号:US20200314990A1

    公开(公告)日:2020-10-01

    申请号:US16365905

    申请日:2019-03-27

    Abstract: A radiation source apparatus includes a vessel, a laser, a collector, a container, and a cone structure. The vessel has an exit aperture. The laser is at one end of the vessel and configured to excite a target material to form a plasma. The collector is in the vessel and configured to collect at least radiation of a desired wavelength emitted by the plasma and to direct the collected radiation to the exit aperture of the vessel. The container is configured to receive a residue of the plasma. The cone structure is between the collector and the exit aperture and located besides the container. The cone structure includes a first inner sidewall, and a second inner sidewall adjoining the first inner sidewall and closer to the container than the first inner sidewall, and a first baffle assembly on the first inner sidewall.

    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 MONITORING REFLECTIVITY OF THE COLLECTOR FOR EXTREME ULTRAVIOLET RADIATION SOURCE

    公开(公告)号:US20200379357A1

    公开(公告)日:2020-12-03

    申请号:US16995759

    申请日:2020-08-17

    Abstract: A method of controlling a feedback system with a data matching module of an extreme ultraviolet (EUV) radiation source is disclosed. The method includes obtaining a slit integrated energy (SLIE) sensor data and diffractive optical elements (DOE) data. The method performs a data match, by the data matching module, of a time difference of the SLIE sensor data and the DOE data to identify a mismatched set of the SLIE sensor data and the DOE data. The method also determines whether the time difference of the SLIE sensor data and the DOE data of the mismatched set is within an acceptable range. Based on the determination, the method automatically validates a configurable data of the mismatched set such that the SLIE sensor data of the mismatched set is valid for a reflectivity calculation.

    METHOD AND APPARATUS FOR LITHOGRAPHY IN SEMICONDUCTOR FABRICATION

    公开(公告)号:US20200350194A1

    公开(公告)日:2020-11-05

    申请号:US16926935

    申请日:2020-07-13

    Abstract: A reticle holding tool is provided. The reticle holding tool includes a housing, a reticle chuck, and a gas delivery assembly. The housing includes an opening, a top housing member, and a lateral housing member extending from the top housing member and terminating at a lower edge which is located on a predetermined plane. The reticle chuck is positioned in the housing and has an effective surface configured to secure a reticle. The effective surface is located between the predetermined plane and the top housing member. The reticle chuck is movable between two boundary lines that are perpendicular to the effective surface. A width of the opening is greater than a distance between the two boundary lines. The gas delivery assembly is positioned within the housing and configured to supply gas into the housing.

    APPARATUS AND METHOD FOR MONITORING REFLECTIVITY OF THE COLLECTOR FOR EXTREME ULTRAVIOLET RADIATION SOURCE

    公开(公告)号:US20200103746A1

    公开(公告)日:2020-04-02

    申请号:US16568044

    申请日:2019-09-11

    Abstract: A method of controlling a feedback system with a data matching module of an extreme ultraviolet (EUV) radiation source is disclosed. The method includes obtaining a slit integrated energy (SLIE) sensor data and diffractive optical elements (DOE) data. The method performs a data match, by the data matching module, of a time difference of the SLIE sensor data and the DOE data to identify a mismatched set of the SLIE sensor data and the DOE data. The method also determines whether the time difference of the SLIE sensor data and the DOE data of the mismatched set is within an acceptable range. Based on the determination, the method automatically validates a configurable data of the mismatched set such that the SLIE sensor data of the mismatched set is valid for a reflectivity calculation.

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