CONTROL BASED ON PROBABILITY DENSITY FUNCTION OF PARAMETER

    公开(公告)号:WO2019161993A1

    公开(公告)日:2019-08-29

    申请号:PCT/EP2019/050766

    申请日:2019-01-14

    Abstract: Described herein is a method for determining adjustment to a patterning process. The method includes obtaining a probability density function of a parameter related to a feature of a substrate subject to the patterning process based on measurements of the parameter, determining, by a hardware computer system, an asymmetry of the probability density function, and determining, by the hardware computer system, an adjustment to the patterning process based on the asymmetry of the probability density function of the parameter so as to reduce a probability of the feature having a parameter value that falls outside a range between threshold values of the parameter.

    A METHOD OF MONITORING A LITHOGRAPHIC PROCESS

    公开(公告)号:WO2022135890A1

    公开(公告)日:2022-06-30

    申请号:PCT/EP2021/084430

    申请日:2021-12-06

    Abstract: Disclosed is a method of monitoring a semiconductor manufacturing process. The method comprises obtaining at least one first trained model being operable to derive local performance parameter data from high resolution metrology data, wherein said local performance parameter data describes a local component, or one or more local contributors thereto, of a performance metric and high resolution metrology data relating to at least one substrate having been subject to at least a part of said semiconductor manufacturing process. Local performance parameter data is determined from said high resolution metrology data using said first trained model. The first trained model is operable to determine said local performance parameter data as if it had been subject to an etch step on at least the immediately prior exposed layer, based on said high resolution metrology data comprising only metrology data performed prior to any such etch step.

    METHOD OF DETERMINING THE CONTRIBUTION OF A PROCESSING APPARATUS TO A SUBSTRATE PARAMETER

    公开(公告)号:WO2020099010A1

    公开(公告)日:2020-05-22

    申请号:PCT/EP2019/076048

    申请日:2019-09-26

    Inventor: ANUNCIADO, Roy

    Abstract: Disclosed is a method for determining a contribution of a processing apparatus to a fingerprint of a parameter across a first substrate, the method comprising: obtaining a delta image which relates to the difference between a first pupil image associated with inspection of a first feature on the substrate and a second pupil image associated with inspection of a second feature on the substrate, wherein the first and second features have different dose sensitivities; determining a rate of change of the difference in response to a variation of a dose used to form said first and second features; selecting a plurality of pixels comprised within the delta image having a rate of change above a predetermined threshold; and determining the contribution using the determined rate of change and the delta image restricted to the plurality of pixels.

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