METROLOGY METHOD FOR MEASURING AN EXPOSED PATTERN AND ASSOCIATED METROLOGY APPARATUS

    公开(公告)号:US20240264081A1

    公开(公告)日:2024-08-08

    申请号:US18640249

    申请日:2024-04-19

    Inventor: Jeroen COTTAAR

    CPC classification number: G01N21/4738 G01N21/9501

    Abstract: Disclosed is a method for performing a measurement of an exposed pattern in photoresist on a substrate and an associated metrology device. The method comprises imparting a beam of measurement radiation on said exposed pattern over a measurement area of a size which prevents or mitigates photoresist damage from the measurement radiation; capturing scattered radiation comprising said measurement radiation subsequent to it having been scattered from said exposed pattern and detecting the scattered radiation on at least one detector. A value for a parameter of interest is determined from the scattered radiation.

    METHOD FOR CONTROLLING A LITHOGRAPHIC APPARATUS

    公开(公告)号:US20220334500A1

    公开(公告)日:2022-10-20

    申请号:US17636452

    申请日:2020-07-22

    Abstract: A method of determining a control setting for a lithographic apparatus. The method includes obtaining a first correction for a current layer on a current substrate based on first metrology data associated with one or more previous substrates, and obtaining a second correction for the current layer on the current substrate. The second correction is based on a residual determined based on second metrology data associated with a previous layer on the current substrate. The method further includes determining the control setting for the lithographic apparatus for patterning the current layer on the current substrate by combining the first correction and the second correction.

    LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD

    公开(公告)号:US20200326637A1

    公开(公告)日:2020-10-15

    申请号:US15779758

    申请日:2016-11-17

    Abstract: Combination of a stage and a level sensor configured to sense a height level at a target location on an object is described, the stage comprising an object table configured to hold the object and a positioning device for displacing the object table relative to the level sensor in a first direction, the level sensor comprising a projection system configured to project a measurement beam onto a measurement area of the object, the measurement area having a measurement area length in the first direction, a detector system configured to receive different portions of the measurement beam after being reflected off different sub-areas within the measurement area, the different sub-areas being arranged in the first direction, and to supply output signals representative of the different portions received, a signal processing system configured to process the output signals from the detector system.

    METROLOGY METHOD FOR MEASURING AN EXPOSED PATTERN AND ASSOCIATED METROLOGY APPARATUS

    公开(公告)号:US20230366815A1

    公开(公告)日:2023-11-16

    申请号:US18021885

    申请日:2021-07-20

    Inventor: Jeroen COTTAAR

    CPC classification number: G01N21/4738 G01N21/9501

    Abstract: Disclosed is a method for performing a measurement of an exposed pattern in photoresist on a substrate and an associated metrology device. The method comprises imparting a beam of measurement radiation on said exposed pattern over a measurement area of a size which prevents or mitigates photoresist damage from the measurement radiation; capturing scattered radiation comprising said measurement radiation subsequent to it having been scattered from said exposed pattern and detecting the scattered radiation on at least one detector. A value for a parameter of interest is determined from the scattered radiation.

    MEASURING METHOD AND MEASURING APPARATUS

    公开(公告)号:US20220397834A1

    公开(公告)日:2022-12-15

    申请号:US17774743

    申请日:2020-10-20

    Abstract: Apparatus and method for measuring one or more parameters of a substrate (300) using source radiation emitted from a radiation source (100) and directed onto the substrate. The apparatus comprises at least one reflecting element (710a) and at least one detector (720, 721). The at least one reflecting element is configured to receive a reflected radiation resulting from reflection of the source radiation from the substrate and further reflect the reflected radiation into a further reflected radiation. The at least one detector is configured for measurement of the further reflected radiation for determination of at least an alignment of the source radiation and/or the substrate

    METHODS FOR CONTROLLING LITHOGRAPHIC APPARATUS, LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD

    公开(公告)号:US20190384188A1

    公开(公告)日:2019-12-19

    申请号:US16479959

    申请日:2017-12-20

    Abstract: A method of controlling a lithographic apparatus to manufacture a plurality of devices, the method including: obtaining a parameter map representing a parameter variation across a substrate by measuring the parameter at a plurality of points on the substrate; decomposing the parameter map into a plurality of components, including a first parameter map component representing parameter variations associated with the device pattern and one or more further parameter map components representing other parameter variations; deriving a scale factor, configured to correct for errors in measurement of the parameter variation, from measurements of a second parameter of a substrate; and controlling the lithographic apparatus using the parameter map and scale factor to apply a device pattern at multiple locations across the substrate.

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