Localized stress modulation for overlay and EPE

    公开(公告)号:US09748148B2

    公开(公告)日:2017-08-29

    申请号:US14736020

    申请日:2015-06-10

    CPC classification number: H01L22/12 H01L22/20

    Abstract: Embodiments of the disclosure provide apparatus and methods for localized stress modulation for overlay and edge placement error (EPE) using electron or ion implantation. In one embodiment, a process for correcting overlay error on a substrate generally includes performing a measurement process in a metrology tool on a substrate to obtain a substrate distortion or an overlay error map, determining doping parameters to correct overlay error or substrate distortion based on the overlay error map, and providing a doping recipe to a doping apparatus based on the doping parameters determined to correct substrate distortion or overlay error. Embodiments may also provide performing a doping treatment process on the substrate using the determined doping repair recipe, for example, by comparing the overlay error map or substrate distortion with a database library stored in a computing system.

    Overlay error correction
    37.
    发明授权

    公开(公告)号:US10234772B2

    公开(公告)日:2019-03-19

    申请号:US15829809

    申请日:2017-12-01

    Abstract: A calibration curve for a wafer comprising a layer on a substrate is determined. The calibration curve represents a local parameter change as a function of a treatment parameter associated with a wafer exposure to a light. The local parameter of the wafer is measured. An overlay error is determined based on the local parameter of the wafer. A treatment map is computed based on the calibration curve to correct the overlay error for the wafer. The treatment map represents the treatment parameter as a function of a location on the wafer.

    Overlay error correction
    38.
    发明授权

    公开(公告)号:US09864280B2

    公开(公告)日:2018-01-09

    申请号:US14874353

    申请日:2015-10-02

    CPC classification number: G03F7/70633

    Abstract: A calibration curve for a wafer comprising a layer on a substrate is determined. The calibration curve represents a local parameter change as a function of a treatment parameter associated with a wafer exposure to a light. The local parameter of the wafer is measured. An overlay error is determined based on the local parameter of the wafer. A treatment map is computed based on the calibration curve to correct the overlay error for the wafer. The treatment map represents the treatment parameter as a function of a location on the wafer.

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