CHARGE TRAP LAYER IN BACK-GATED THIN-FILM TRANSISTORS

    公开(公告)号:US20200220024A1

    公开(公告)日:2020-07-09

    申请号:US16640469

    申请日:2017-09-29

    Abstract: A back-gated thin-film transistor (TFT) includes a gate electrode, a gate dielectric on the gate electrode, an active layer on the gate dielectric and having source and drain regions and a semiconductor region physically connecting the source and drain regions, a capping layer on the semiconductor region, and a charge trap layer on the capping layer. In an embodiment, a memory cell includes this back-gated TFT and a capacitor, the gate electrode being electrically connected to a wordline and the source region being electrically connected to a bitline, the capacitor having a first terminal electrically connected to the drain region, a second terminal, and a dielectric medium electrically separating the first and second terminals. In another embodiment, an embedded memory includes wordlines extending in a first direction, bitlines extending in a second direction crossing the first direction, and several such memory cells at crossing regions of the wordlines and bitlines.

    MEMORY ARRAYS WITH BACKSIDE COMPONENTS AND ANGLED TRANSISTORS

    公开(公告)号:US20240008255A1

    公开(公告)日:2024-01-04

    申请号:US18325492

    申请日:2023-05-30

    CPC classification number: H10B12/315 H10B12/033 H10B12/05 H10B12/482

    Abstract: Memory arrays with backside components and angled transistors, and related assemblies and methods, are disclosed herein. A transistor is referred to as an “angled transistor” if a longitudinal axis of an elongated semiconductor structure of the transistor (e.g., a fin or a nanoribbon) is neither perpendicular nor parallel to any edges of front or back sides of a support structure (e.g., a die) over which the transistor is implemented. A component is referred to as a “backside component” if it is provided on the side of a semiconductor substrate that is opposite to the side over which the transistors of the memory arrays are provided. Memory arrays with backside components and angled transistors provide a promising way to increasing densities of memory cells on the limited real estate of semiconductor chips and/or decreasing adverse effects associated with continuous scaling of IC components.

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