METHOD OF CONTROLLING BUMP HEIGHT VARIATION
    5.
    发明申请

    公开(公告)号:US20170229422A1

    公开(公告)日:2017-08-10

    申请号:US15497669

    申请日:2017-04-26

    Abstract: A method of making a semiconductor device includes patterning a photoresist on a substrate to form a plurality of openings in the photoresist. A first opening is near a center of the substrate and has a first width. A second opening is near an edge of the substrate and has a second width smaller than the first width. A third opening is between the first opening and the second opening and has a third width greater than the second width and smaller than the first width. The method further includes plating a conductive material into each opening. Plating the conductive material includes plating the first conductive material in the first opening at a first current density; plating the first conductive material in the second opening at a second current density greater than the first current density; and plating the conductive material in the third opening at a third current density.

    FRONT-TO-BACK BONDING WITH THROUGH-SUBSTRATE VIA (TSV)

    公开(公告)号:US20210043547A1

    公开(公告)日:2021-02-11

    申请号:US17080564

    申请日:2020-10-26

    Inventor: Jing-Cheng LIN

    Abstract: Methods for forming a semiconductor device structure are provided. The method includes forming a conductive feature in a first wafer, and forming a first bonding layer over the conductive feature. The method includes forming a second bonding layer over a second wafer, and bonding the first wafer and the second wafer by bonding the first bonding layer and the second bonding layer. The method also includes forming a second transistor in a front-side of the second wafer, and after forming the second transistor in the front-side of the second wafer, forming a first TSV through the second wafer, wherein the first TSV stops at the conductive feature.

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