Boundary region for high-k-metal-gate (HKMG) integration technology

    公开(公告)号:US10991693B2

    公开(公告)日:2021-04-27

    申请号:US16732450

    申请日:2020-01-02

    摘要: The present disclosure relates to an integrated circuit (IC) that includes a boundary region defined between a low voltage region, and a method of formation. In some embodiments, the integrated circuit comprises a first gate boundary dielectric layer disposed over a substrate in the low voltage region. A second gate boundary dielectric layer is disposed over the substrate in the high voltage region having a thickness greater than that of the first boundary dielectric layer. The first boundary dielectric layer meets the second boundary dielectric layer at the boundary region. A first polysilicon component is disposed within the boundary region over the first boundary dielectric layer and the second gate boundary layer. A second polysilicon component is disposed within the boundary region over the first polysilicon component. A hard mask component is disposed over the first polysilicon component and laterally neighbored to the second polysilicon component.

    Dishing prevention columns for bipolar junction transistors

    公开(公告)号:US10804093B2

    公开(公告)日:2020-10-13

    申请号:US16587819

    申请日:2019-09-30

    摘要: In some embodiments, a bipolar junction transistor (BJT) is provided. The BJT may include a collector region that is disposed within a semiconductor substrate. A base region that is disposed within the semiconductor substrate and arranged within the collector region. An emitter region that is disposed within the semiconductor substrate and arranged within the base region. A pre-metal dielectric layer that is disposed over an upper surface of the semiconductor substrate and that separates the upper surface of the semiconductor substrate from a lowermost metal interconnect layer. A first plurality of dishing prevention columns that are arranged over the emitter region and within the pre-metal dielectric layer, where the plurality of dishing prevention columns each include a dummy gate that is conductive and electrically floating.