DOUBLE-GATED FERROELECTRIC FIELD-EFFECT TRANSISTOR

    公开(公告)号:US20200176457A1

    公开(公告)日:2020-06-04

    申请号:US16640467

    申请日:2017-09-29

    Abstract: A ferroelectric field-effect transistor (FeFET) includes first and second gate electrodes, source and drain regions, a semiconductor region between and physically connecting the source and drain regions, a first gate dielectric between the semiconductor region and the first gate electrode, and a second gate dielectric between the semiconductor region and the second gate electrode. The first gate dielectric includes a ferroelectric dielectric. In an embodiment, a memory cell includes this FeFET, with the first gate electrode being electrically connected to a wordline and the drain region being electrically connected to a bitline. In another embodiment, a memory array includes wordlines extending in a first direction, bitlines extending in a second direction, and a plurality of such memory cells at crossing regions of the wordlines and the bitlines. In each memory cell, the wordline is a corresponding one of the wordlines and the bitline is a corresponding one of the bitlines.

    THRESHOLD SWITCHING CONTACT IN A FIELD-EFFECT TRANSISTOR AS A SELECTOR

    公开(公告)号:US20190305045A1

    公开(公告)日:2019-10-03

    申请号:US15942115

    申请日:2018-03-30

    Abstract: An integrated circuit structure includes: a field-effect transistor including a semiconductor region including a semiconductor material having a bandgap less than or equal to that of silicon, a semiconductor source and a semiconductor drain, the semiconductor region being between the semiconductor source and the semiconductor drain, a gate electrode, a gate dielectric between the semiconductor region and the gate electrode, a source contact adjacent to the semiconductor source, and a drain contact adjacent to the semiconductor drain; and a resistive switch or a capacitor electrically connected to the drain contact. One of the source contact and the drain contact includes a threshold switching region, to be a selector for the resistive switch or the capacitor. In some embodiments, the threshold switching region includes a threshold switching oxide or a threshold switching chalcogenide, and the resistive switch or the capacitor is part of a resistive memory cell or capacitive memory cell.

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