METHOD FOR ALIGNMENT, PROCESS TOOL AND METHOD FOR WAFER-LEVEL ALIGNMENT

    公开(公告)号:US20200227298A1

    公开(公告)日:2020-07-16

    申请号:US16829248

    申请日:2020-03-25

    Abstract: Various embodiments of the present application are directed towards a method for workpiece-level alignment with low alignment error and high throughput. In some embodiments, the method comprises aligning a first alignment mark on a first workpiece to a field of view (FOV) of an imaging device based on feedback from the imaging device, and further aligning a second alignment mark on a second workpiece to the first alignment mark based on feedback from the imaging device. The second workpiece is outside the FOV during the aligning of the first alignment mark. The aligning of the second alignment mark is performed without moving the first alignment mark out of the FOV. Further, the imaging device views the second alignment mark, and further views the first alignment mark through the second workpiece, during the aligning of the second alignment mark. The imaging device may, for example, perform imaging with reflected infrared radiation.

    BOND ALIGNMENT METHOD FOR HIGH ACCURACY AND HIGH THROUGHPUT

    公开(公告)号:US20190393067A1

    公开(公告)日:2019-12-26

    申请号:US16015507

    申请日:2018-06-22

    Abstract: Various embodiments of the present application are directed towards a method for workpiece-level alignment with low alignment error and high throughput. In some embodiments, the method comprises aligning a first alignment mark on a first workpiece to a field of view (FOV) of an imaging device based on feedback from the imaging device, and further aligning a second alignment mark on a second workpiece to the first alignment mark based on feedback from the imaging device. The second workpiece is outside the FOV during the aligning of the first alignment mark. The aligning of the second alignment mark is performed without moving the first alignment mark out of the FOV. Further, the imaging device views the second alignment mark, and further views the first alignment mark through the second workpiece, during the aligning of the second alignment mark. The imaging device may, for example, perform imaging with reflected infrared radiation.

    NOVEL APPROACH FOR ULTRA THIN-FILM TRANSFER AND HANDLING

    公开(公告)号:US20190094682A1

    公开(公告)日:2019-03-28

    申请号:US16013163

    申请日:2018-06-20

    CPC classification number: G03F1/64 G03F1/62 G03F7/7015

    Abstract: A method for forming a pellicle apparatus involves forming a device substrate by depositing one or more pellicle layers defined over a base device layer, where a release layer is formed thereover. An adhesive layer is formed over a transparent carrier substrate. The adhesive layer is bonded to the release layer, defining a composite substrate comprised of the device and carrier substrates. The base device layer is removed from the composite structure and a pellicle frame is attached to an outermost one of the pellicle layers. A pellicle region is isolated from a remainder of the composite structure, and an ablation of the release layer is performed through the transparent carrier substrate, defining the pellicle apparatus comprising a pellicle film attached to the pellicle frame. The pellicle apparatus is then from a remaining portion of the composite substrate.

    APPARATUS FOR BOND WAVE PROPAGATION CONTROL
    30.
    发明申请

    公开(公告)号:US20200051950A1

    公开(公告)日:2020-02-13

    申请号:US16654377

    申请日:2019-10-16

    Abstract: An apparatus and method is provided for controlling a propagation of a bond wave during semiconductor processing. The apparatus has a first chuck to selectively retain a first workpiece. A second chuck selectively retains a second workpiece. The first and second chucks selectively secure at least a periphery of the respective first workpiece and second workpiece. An air vacuum is circumferentially located in a region between the first chuck and second chuck. The air vacuum is configured to induce a vacuum between the first workpiece and second workpiece to selectively bring the first workpiece and second workpiece together from a propagation point. The air vacuum can be localized air vacuum guns, a vacuum disk, or an air curtain positioned about the periphery of the region between the first chuck and second chuck. The air curtain induces a lower pressure within the region between the first and second chucks.

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