SEMICONDUCTOR DEVICES INCLUDING LOWER ELECTRODES INCLUDING INNER PROTECTIVE LAYER AND OUTER PROTECTIVE LAYER

    公开(公告)号:US20220084943A1

    公开(公告)日:2022-03-17

    申请号:US17235369

    申请日:2021-04-20

    Abstract: A semiconductor device includes a landing pad on a substrate, a lower electrode on the landing pad, the lower electrode including an outer protective layer, a conductive layer between opposing sidewalls of the outer protective layer, and an inner protective layer between opposing sidewalls of the conductive layer, a first supporter pattern on a side surface of the lower electrode, the first supporter pattern including a supporter hole, a dielectric layer on a surface of each of the lower electrode and the first supporter pattern, and an upper electrode on the dielectric layer. The outer protective layer includes titanium oxide, the conductive layer includes titanium nitride, and the inner protective layer includes titanium silicon nitride. In a horizontal cross-sectional view, the outer protective layer has an arc shape that extends between the dielectric layer and the conductive layer.

    Semiconductor devices
    32.
    发明授权

    公开(公告)号:US10930654B2

    公开(公告)日:2021-02-23

    申请号:US16441100

    申请日:2019-06-14

    Abstract: Semiconductor devices are provided. The semiconductor devices may include an active pattern on a substrate. The active pattern may include a first source/drain region and a second source/drain region. The semiconductor devices may also include a bit line electrically connected to the first source/drain region, a first connection electrode electrically connected to the second source/drain region, and a capacitor on the first connection electrode. The capacitor may include a first electrode, a second electrode, and a dielectric pattern between the first and second electrodes. A lower portion of the dielectric pattern may overlap a top surface of the first connection electrode, and the first electrode may extend on an upper portion of a sidewall of the first connection electrode.

    Semiconductor device
    33.
    发明授权

    公开(公告)号:US10892345B2

    公开(公告)日:2021-01-12

    申请号:US15995049

    申请日:2018-05-31

    Abstract: Disclosed is a semiconductor device including a bottom electrode, a dielectric layer, and a top electrode that are sequentially disposed on a substrate. The dielectric layer includes a hafnium oxide layer including hafnium oxide having a tetragonal crystal structure, and an oxidation seed layer including an oxidation seed material. The oxidation seed material has a lattice constant having a lattice mismatch of 6% or less with one of a horizontal lattice constant and a vertical lattice constant of the hafnium oxide having the tetragonal crystal structure.

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