3D-FERROELECTRIC RANDOM (3D-FRAM) WITH BURIED TRENCH CAPACITORS

    公开(公告)号:US20220208778A1

    公开(公告)日:2022-06-30

    申请号:US17134281

    申请日:2020-12-26

    Abstract: A memory device comprises a series of alternating plate lines and an insulating material over a substrate. Two or more ferroelectric capacitors are through the series of alternating plate lines and an insulating material such that a first one of the ferroelectric capacitors is coupled to a first one of the plate lines and a second one of the ferroelectric capacitors is coupled to a second one of the plate lines. A plurality of substantially parallel bitlines is along a first direction over the two or more ferroelectric capacitors. A plurality of substantially parallel bitlines is along a first direction over the two or more ferroelectric capacitors. A plurality of substantially parallel wordlines is along a second direction orthogonal to the first direction over the two or more ferroelectric capacitors. An access transistor is located over and controls the two or more ferroelectric capacitors, the access transistor incorporating a first one of the bitlines and a first one of the wordlines. The bitline comprise a first source/drain of a source/drain pair, and a second source/drain is aligned, and in contact, with a top one of the two or more ferroelectric capacitors, and the first wordline forms a gate of the access transistor.

    SYSTEMS, METHODS, AND APPARATUSES FOR IMPLEMENTING BI-LAYER SEMICONDUCTING OXIDES IN SOURCE AND DRAIN FOR LOW ACCESS AND CONTACT RESISTANCE OF THIN FILM TRANSISTORS

    公开(公告)号:US20200066912A1

    公开(公告)日:2020-02-27

    申请号:US16325164

    申请日:2016-09-30

    Abstract: In accordance with disclosed embodiments, there are provided systems, methods, and apparatuses for implementing bi-layer semiconducting oxides in a source/drain for low access and contact resistance of thin film transistors. For instance, there is disclosed in accordance with one embodiment a semiconductor device having therein a substrate; a bi-layer oxides layer formed from a first oxide material and a second oxide material, the first oxide material comprising a semiconducting oxide material and having different material properties from the second oxide material comprising a high mobility oxide material; a channel layer formed atop the substrate, the channel layer formed from the semiconducting oxide material of the bi-layer oxides layer; a high mobility oxide layer formed atop the channel layer, the high conductivity oxide layer formed from the high mobility oxide material of the bi-layer oxides layer; metallic contacts formed atop the high mobility oxide layer; a gate and a gate oxide material formed atop the high mobility oxide layer, the gate oxide material being in direct contact with the high mobility oxide layer; and spacers separating the metallic contacts from the gate and gate oxide material. Other related embodiments are disclosed.

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