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    LAYOUT OF SEMICONDUCTOR MEMORY DEVICE
    1.
    发明公开
    LAYOUT OF SEMICONDUCTOR MEMORY DEVICE 审中-公开

    公开(公告)号：US20230197153A1

    公开(公告)日：2023-06-22

    申请号：US17580591

    申请日：2022-01-20

    Applicant: UNITED MICROELECTRONICS CORP.

    Inventor： Chun-Yen Tseng ,  Yu-Tse Kuo ,  Shu-Ru Wang ,  Chun-Hsien Huang ,  Hsin-Chih Yu ,  Meng-Ping Chuang ,  Li-Ping Huang ,  Yu-Fang Chen

    IPC: G11C15/04

    CPC classification number: G11C15/04

    Abstract: A layout of a semiconductor memory device includes a substrate and a ternary content addressable memory (TCAM). The TCAM is disposed on the substrate and includes a plurality of TCAM bit cells, where at least two of the TCAM bit cells are mirror-symmetrical along an axis of symmetry, and each of the TCAM bit cells includes two storage units electrically connected to two word lines respectively, and a logic circuit electrically connected to the storage units. The logic circuit includes two first reading transistors, and two second reading transistors, where each of the second reading transistors includes a gate and source and drain regions, the source and drain regions of the second reading transistors are electrically connected to two matching lines and the first reading transistors, respectively, where the word lines are disposed parallel to and between the matching lines.

    Layout of semiconductor memory device
    3.
    发明授权
    Layout of semiconductor memory device 有权

    公开(公告)号：US11915755B2

    公开(公告)日：2024-02-27

    申请号：US17580591

    申请日：2022-01-20

    Applicant: UNITED MICROELECTRONICS CORP.

    Inventor： Chun-Yen Tseng ,  Yu-Tse Kuo ,  Shu-Ru Wang ,  Chun-Hsien Huang ,  Hsin-Chih Yu ,  Meng-Ping Chuang ,  Li-Ping Huang ,  Yu-Fang Chen

    IPC: G11C15/04

    CPC classification number: G11C15/04

    Abstract: A layout of a semiconductor memory device includes a substrate and a ternary content addressable memory (TCAM). The TCAM is disposed on the substrate and includes a plurality of TCAM bit cells, where at least two of the TCAM bit cells are mirror-symmetrical along an axis of symmetry, and each of the TCAM bit cells includes two storage units electrically connected to two word lines respectively, and a logic circuit electrically connected to the storage units. The logic circuit includes two first reading transistors, and two second reading transistors, where each of the second reading transistors includes a gate and source and drain regions, the source and drain regions of the second reading transistors are electrically connected to two matching lines and the first reading transistors, respectively, where the word lines are disposed parallel to and between the matching lines.

    Control circuit used for ternary content-addressable memory with two logic units
    5.
    发明授权
    Control circuit used for ternary content-addressable memory with two logic units 有权

    公开(公告)号：US10366756B1

    公开(公告)日：2019-07-30

    申请号：US16104946

    申请日：2018-08-19

    Applicant: UNITED MICROELECTRONICS CORP.

    Inventor： Chun-Yen Tseng ,  Ching-Cheng Lung ,  Yu-Tse Kuo ,  Chun-Hsien Huang ,  Hsin-Chih Yu ,  Shu-Ru Wang

    IPC: G11C15/00 ,  G11C15/04

    Abstract: A control circuit for a ternary content-addressable memory includes a first logic unit and a second logic unit. The first logic unit is coupled to a first storage unit, a second storage unit, a first search line, a second search line, a reference voltage terminal, and a match line. The second logic unit is coupled to the first storage unit, the second storage unit, the first search line, the second search line, a first power supply line and a second power supply line. When voltages at the first search line and the second search line match voltages at the first storage unit and the second storage unit, the second logic unit provides a path for electrically connecting the first power supply line to the second power supply line.

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