Methods for Reading Resistive States of Resistive Change Elements

    公开(公告)号:US20240363162A1

    公开(公告)日:2024-10-31

    申请号:US18770397

    申请日:2024-07-11

    Applicant: Nantero, Inc.

    Inventor: Claude L. Bertin

    CPC classification number: G11C13/025 H10K10/50 H10K19/202 H10K85/221

    Abstract: The present disclosure generally relates to multi-switch storage cells (MSSCs), three-dimensional MSSC arrays, and three-dimensional MSSC memory. Multi-switch storage cells include a cell select device, multiple resistive change elements, and an intracell wiring electrically connecting the multiple resistive change elements together and to the cell select device. MSSC arrays are designed (architected) and operated to prevent inter-cell (sneak path) currents between multi-switch storage cells, which prevents stored data disturb from adjacent cells and adjacent cell data pattern sensitivity. Additionally, READ and WRITE operations may be performed on one of the multiple resistive change elements in a multi-switch storage cell without disturbing the stored data in the remaining resistive change elements. However, controlled parasitic currents may flow in the remaining resistive change elements within the cell. Isolating each multi-switch storage cell in a three-dimensional MSSC array, enables in-memory computing for applications such as data processing for machine learning and artificial intelligence.

    Three dimensional (3D) memories with multiple resistive change elements per cell and corresponding architectures for in-memory computing

    公开(公告)号:US12068029B2

    公开(公告)日:2024-08-20

    申请号:US18370541

    申请日:2023-09-20

    Applicant: Nantero, Inc.

    Inventor: Claude L. Bertin

    CPC classification number: G11C13/025 H10K10/50 H10K19/202 H10K85/221

    Abstract: The present disclosure generally relates to multi-switch storage cells (MSSCs), three-dimensional MSSC arrays, and three-dimensional MSSC memory. Multi-switch storage cells include a cell select device, multiple resistive change elements, and an intracell wiring electrically connecting the multiple resistive change elements together and to the cell select device. MSSC arrays are designed (architected) and operated to prevent inter-cell (sneak path) currents between multi-switch storage cells, which prevents stored data disturb from adjacent cells and adjacent cell data pattern sensitivity. Additionally, READ and WRITE operations may be performed on one of the multiple resistive change elements in a multi-switch storage cell without disturbing the stored data in the remaining resistive change elements. However, controlled parasitic currents may flow in the remaining resistive change elements within the cell. Isolating each multi-switch storage cell in a three-dimensional MSSC array, enables in-memory computing for applications such as data processing for machine learning and artificial intelligence.

    Semiconductor memory device
    9.
    发明授权

    公开(公告)号:US12016188B2

    公开(公告)日:2024-06-18

    申请号:US17840213

    申请日:2022-06-14

    Abstract: A semiconductor memory device includes a plurality of semiconductor patterns extending in a first horizontal direction and separated from each other in a second horizontal direction and a vertical direction, each semiconductor pattern including a first source/drain area, a channel area, and a second source/drain area arranged in the first horizontal direction; a plurality of gate insulating layers covering upper surfaces or side surfaces of the channel areas; a plurality of word lines on the upper surfaces or the side surfaces of the channel areas; and a plurality of resistive switch units respectively connected to first sidewalls of the semiconductor patterns, extending in the first horizontal direction, and separated from each other in the second horizontal direction and the vertical direction, each resistive switch unit including a first electrode, a second electrode, and a resistive switch material layer between the first and second electrodes and including carbon nanotubes.

    Nucleic acid-based electrically readable, read-only memory

    公开(公告)号:US11943940B2

    公开(公告)日:2024-03-26

    申请号:US17253088

    申请日:2019-07-11

    CPC classification number: H10K19/202 H10K10/50 H10K85/761

    Abstract: A nanostructured cross-wire memory architecture is provided that can interface with conventional semiconductor technologies and be electrically accessed and read. The architecture links lower and upper sets of generally parallel nanowires oriented crosswise, with a memory element that has a characteristic conductance. Each nanowire end is attached to an electrode. Conductance of the linkages in the gap between the wires encodes the information. The nanowires may be highly-conductive, self-assembled, nucleic acid-based nanowires enhanced with dopants including metal ions, carbon, metal nanoparticles and intercalators. Conductance of the memory elements can be controlled by sequence, length, conformation, doping, and number of pathways between nanowires. A diode can also be connected in series with each of the memory elements. Linkers may also be redox or electroactive switching molecules or nanoparticles where the charge state changes the resistance of the memory element.

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