Lithographic Method and Apparatus
    21.
    发明申请

    公开(公告)号:US20180088467A1

    公开(公告)日:2018-03-29

    申请号:US15567191

    申请日:2016-04-18

    CPC classification number: G03F7/706 G01M11/0242 G01M11/0257 G03F7/70866

    Abstract: A method comprising illuminating a patterning device (MA′) comprising a plurality of patterned regions (15a-15c) of which each patterns a measurement beam (17a-17c), projecting, with a projection system (PL), the measurement beams onto a sensor apparatus (21) comprising a plurality of detector regions (25a-25c), making a first measurement of radiation when the patterning device and the sensor apparatus are positioned in a first relative configuration, moving at least one of the patterning device and the sensor apparatus so as to change the relative configuration of the patterning device to a second relative configuration, making a second measurement of radiation when the patterning device and the sensor apparatus are positioned in the second relative configuration in which at least some of the plurality of detector regions receive a different measurement beam to the measurement beam which was received at the respective detector region in the first relative configuration and determining aberrations caused by the projection system.

    Lithographic Apparatus and Device Manufacturing Method Utilizing Data Filtering

    公开(公告)号:US20170269483A1

    公开(公告)日:2017-09-21

    申请号:US15614542

    申请日:2017-06-05

    CPC classification number: G03F7/70191 G03F7/70291 G03F7/70433 G03F7/70508

    Abstract: An apparatus and method are used to form patterns on a substrate. The apparatus comprises a projection system, a patterning device, a low-pass filter, and a data manipulation device. The projection system projects a beam of radiation onto the substrate as an array of sub-beams. The patterning device modulates the sub-beams to substantially produce a requested dose pattern on the substrate. The low-pass filter operates on pattern data derived from the requested dose pattern in order to form a frequency-clipped target dose pattern that comprises only spatial frequency components below a selected threshold frequency. The data manipulation device produces a control signal comprising spot exposure intensities to be produced by the patterning device, based on a direct algebraic least-squares fit of the spot exposure intensities to the frequency-clipped target dose pattern. In various examples, filters can also be used.

    IMAGING VIA ZEROTH ORDER SUPPRESSION
    30.
    发明公开

    公开(公告)号:US20240219843A1

    公开(公告)日:2024-07-04

    申请号:US18532977

    申请日:2023-12-07

    CPC classification number: G03F7/70308

    Abstract: Apparatuses and techniques for suppressing a zeroth order portion of a configured radiation beam. In some embodiments, an extreme ultraviolet (EUV) lithographic apparatus for forming an image on a substrate by use of an EUV radiation beam that is configured by a patterning device comprising a pattern of reflective regions and partially reflective regions, wherein the partially reflective regions are configured to suppress and apply a phase shift to a portion of the EUV radiation beam, may include a projection system. The projection system may be configured to suppress a zeroth order portion of a configured EUV radiation beam, and direct an unsuppressed portion of a configured EUV radiation beam towards a substrate to form an image on the substrate.

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