Semiconductor electrostatic discharge protection device

    公开(公告)号:US10242978B1

    公开(公告)日:2019-03-26

    申请号:US15794834

    申请日:2017-10-26

    Abstract: The present disclosure provides a semiconductor ESD protection device. The semiconductor ESD protection device includes a substrate including a first conductivity type, a gate formed on the substrate, a source region and a drain region formed in the substrate, and a body region formed in the substrate. The substrate and the body region include a first conductivity type. The source region and the drain region include a second conductivity type. And the first conductivity type and the second conductivity type are complementary to each other. The body region is electrically connected to the gate.

    Semiconductor structure having word line disposed over portion of an oxide-free dielectric material in the non-active region

    公开(公告)号:US11101273B1

    公开(公告)日:2021-08-24

    申请号:US16799859

    申请日:2020-02-25

    Abstract: A method of manufacturing a semiconductor structure includes: receiving a substrate having an active region and a non-active region adjacent to the active region; forming an etch stop layer over the non-active region of the substrate, in which the etch stop layer is oxide-free; forming an isolation over the etch stop layer; removing a portion of the active region and a portion of the isolation to form a first trench in the active region and a second trench over the etch stop layer, respectively, in which a thickness of the etch stop layer beneath the second trench is greater than a depth difference between the first trench and the second trench; forming a dielectric layer in the first trench; and filling a conductive material on the dielectric layer in the first trench and in the second trench. A semiconductor structure is also provided.

    Method of manufacturing semiconductor structure having word line disposed over portion of an oxide-free dielectric material in the non-active region

    公开(公告)号:US11488964B2

    公开(公告)日:2022-11-01

    申请号:US17371119

    申请日:2021-07-09

    Abstract: A method of manufacturing a semiconductor structure includes: receiving a substrate having an active region and a non-active region adjacent to the active region; forming an etch stop layer over the non-active region of the substrate, in which the etch stop layer is oxide-free; forming an isolation over the etch stop layer; removing a portion of the active region and a portion of the isolation to form a first trench in the active region and a second trench over the etch stop layer, respectively, in which a thickness of the etch stop layer beneath the second trench is greater than a depth difference between the first trench and the second trench; forming a dielectric layer in the first trench; and filling a conductive material on the dielectric layer in the first trench and in the second trench. A semiconductor structure is also provided.

    Method for preparing transistor device

    公开(公告)号:US11482419B2

    公开(公告)日:2022-10-25

    申请号:US17106626

    申请日:2020-11-30

    Abstract: The present disclosure provides a transistor device and a method for preparing the same. The transistor device includes an isolation structure disposed in a substrate, an active region disposed in the substrate and surrounded by the isolation structure, a first upper gate disposed over the active region and a portion of the isolation structure, a source/drain disposed at two sides of the gate, and a pair of first lower gates disposed under the first upper gate and isolated from the active region by the isolation structure. In some embodiments, the pair of first lower gates extend in a first direction, the first upper gate extends in a second direction, and the first direction and the second direction are different.

    Semiconductor device with undercutted-gate and method of fabricating the same

    公开(公告)号:US10825931B2

    公开(公告)日:2020-11-03

    申请号:US15894954

    申请日:2018-02-13

    Abstract: A semiconductor device includes a semiconductor substrate, a dielectric layer, a gate structure, a source semiconductor feature, and a drain semiconductor feature. The semiconductor substrate has an active area and a shallow trench isolation (STI) structure surrounding the active area. The semiconductor substrate includes a protrusion structure in the active area and has an undercut at a periphery of the active area. The dielectric layer overlays the protrusion structure of the semiconductor substrate and fills at least a portion of the undercut of the protrusion structure. The gate structure crosses over the protrusion structure. The source semiconductor feature and the drain semiconductor feature are located in the active area and positioned at opposite sides of the gate structure.

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