One-time programmable fuse using thin film resistor layer, and related method

    公开(公告)号:US12176048B2

    公开(公告)日:2024-12-24

    申请号:US18145341

    申请日:2022-12-22

    Abstract: A one-time programmable (OTP) fuse includes a fuse link including a thin film resistor (TFR) layer between a first insulator layer and a second insulator layer. A first terminal of the OTP fuse includes a first conductive pillar through one of the first and second insulator layers and in contact with the TFR layer; and a second terminal of the OTP fuse includes a second conductive pillar through one of the first and second insulator layers and in contact with the TFR layer. The second conductive pillar and the TFR layer have a lateral contact interface having a same shape as an outer portion of the second conductive pillar. The second conductive pillar does not simply land on the TFR layer, but extends through it. Application of a current to the OTP fuse results in programming via rupture of the lateral contact interface (not electromigration in the fuse link).

    Reliable pad interconnects
    3.
    发明授权

    公开(公告)号:US10199342B2

    公开(公告)日:2019-02-05

    申请号:US15412067

    申请日:2017-01-23

    Abstract: A device and methods of forming the device are disclosed. A substrate with a circuits component and a dielectric layer with interconnects is provided. A pad level dielectric layer is formed over the dielectric layer. A primary passivation layer is formed over the pad level dielectric layer with pad interconnects. The substrate is subjected to an alloying process. During the alloying process, the primary passivation layer prevents or reduces formation of hillocks on surfaces of the pad interconnects to improve surface smoothness of the pad interconnects. Pad openings are formed in the pad level dielectric layer to expose top surfaces of the pad interconnects. A cap dielectric layer is formed on the substrate and lines the primary passivation layer as well as the exposed top surfaces of the pad interconnects. A final passivation layer is formed on the substrate and covers the cap dielectric layer. The final passivation layer is patterned to form final passivation openings corresponding to the pad openings.

    ONE-TIME PROGRAMMABLE FUSE USING THIN FILM RESISTOR LAYER, AND RELATED METHOD

    公开(公告)号:US20240212770A1

    公开(公告)日:2024-06-27

    申请号:US18145341

    申请日:2022-12-22

    CPC classification number: G11C17/16 G11C17/18 H01C7/006 H01L23/5256

    Abstract: A one-time programmable (OTP) fuse includes a fuse link including a thin film resistor (TFR) layer between a first insulator layer and a second insulator layer. A first terminal of the OTP fuse includes a first conductive pillar through one of the first and second insulator layers and in contact with the TFR layer; and a second terminal of the OTP fuse includes a second conductive pillar through one of the first and second insulator layers and in contact with the TFR layer. The second conductive pillar and the TFR layer have a lateral contact interface having a same shape as an outer portion of the second conductive pillar. The second conductive pillar does not simply land on the TFR layer, but extends through it. Application of a current to the OTP fuse results in programming via rupture of the lateral contact interface (not electromigration in the fuse link).

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