Anti-fuse unit and anti-fuse array

    公开(公告)号:US12046552B2

    公开(公告)日:2024-07-23

    申请号:US17386484

    申请日:2021-07-27

    发明人: ChihCheng Liu

    摘要: An anti-fuse unit includes: an anti-fuse device; a first selection transistor electrically connected with the anti-fuse device; and a second selection transistor electrically connected with the first selection transistor. Each of the anti-fuse device, the first selection transistor and the second selection transistor is provided with a gate oxide layer and a gate conductive layer, the gate oxide layer of the anti-fuse device, the gate oxide layer of the first selection transistor and the gate oxide layer of the second selection transistor have a same thickness, and the gate conductive layer of the anti-fuse device, the gate conductive layer of the first selection transistor and the gate conductive layer of the second selection transistor have a same thickness.

    Semiconductor memory devices with dielectric fin structures

    公开(公告)号:US11950411B2

    公开(公告)日:2024-04-02

    申请号:US17473636

    申请日:2021-09-13

    CPC分类号: H10B20/20 H01L29/0665

    摘要: A semiconductor device includes a plurality of first nanostructures extending along a first lateral direction. The semiconductor device includes a first epitaxial structure and second epitaxial structure respectively coupled to ends of each of the plurality of first nanostructures along the first lateral direction. The semiconductor device includes a dielectric fin structure disposed immediately next to a sidewall of each of the plurality of first nanostructures facing a second lateral direction perpendicular to the first lateral direction. The semiconductor device includes a first gate structure wrapping around each of the plurality of first nanostructures except for the sidewalls of the first nanostructures. The semiconductor device includes a metal structure disposed above the first gate structure and coupled to one of the first or second epitaxial structure.

    One-time programmable (OTP) memory device and method of operating an OTP memory device

    公开(公告)号:US11882696B2

    公开(公告)日:2024-01-23

    申请号:US17558884

    申请日:2021-12-22

    摘要: A one-time programmable (OTP) memory device includes an access transistor, a word line, a voltage line, a well, a first filling oxide layer, a first semiconductor layer, and a bit line. The access transistor includes a gate structure on a substrate, and first and second impurity regions at portions of the substrate adjacent to the gate structure. The word line is electrically connected to the gate structure. The voltage line is electrically connected to the first impurity region. The well is formed at an upper portion of the substrate, and is doped with impurities having a first conductivity type. The first filling oxide layer is formed on the well. The first semiconductor layer is formed on the first filling oxide layer, and is doped with impurities having the first conductivity type and electrically connected to the second impurity region. The bit line is electrically connected to the well.