BIPOLAR JUNCTION TRANSISTORS WITH A SELF-ALIGNED EMITTER AND BASE

    公开(公告)号:US20200066885A1

    公开(公告)日:2020-02-27

    申请号:US16106344

    申请日:2018-08-21

    Abstract: Device structures and fabrication methods for a bipolar junction transistor. A trench isolation region surrounds an active region that includes a collector. A base layer is arranged over the active region, and a semiconductor layer is arranged on the base layer. The semiconductor layer includes a stepped profile with a first section having a first width adjacent to the base layer and a second section having a second width that is less than the first width. An emitter is arranged on the second section of the semiconductor layer.

    Heterojunction bipolar transistor with a thickened extrinsic base

    公开(公告)号:US10115810B2

    公开(公告)日:2018-10-30

    申请号:US15437168

    申请日:2017-02-20

    Abstract: Device structures and fabrication methods for a heterojunction bipolar transistor. A collector of the device structure has a top surface and a sidewall that is inclined relative to the top surface. The device structure further includes an emitter, an intrinsic base that has a first thickness, and an extrinsic base coupled with the intrinsic base. The extrinsic base has a lateral arrangement relative to the intrinsic base and relative to the emitter. The intrinsic base has a vertical arrangement between the emitter and the top surface of the collector. The sidewall of the collector extends laterally to undercut the extrinsic base. The extrinsic base has a second thickness that is greater than a first thickness of the intrinsic base.

    Electrical fuse with high off resistance
    6.
    发明授权
    Electrical fuse with high off resistance 有权
    具有高电阻的电气保险丝

    公开(公告)号:US09576899B2

    公开(公告)日:2017-02-21

    申请号:US14746891

    申请日:2015-06-23

    CPC classification number: H01L23/5256 H01L21/7682 H01L23/522 H01L23/5329

    Abstract: Electrical fuses and methods for forming an electrical fuse. A semiconductor substrate is implanted to define a modified region in the semiconductor substrate. Trenches that surround the modified region and that penetrate into the semiconductor substrate to a depth greater than a depth of the modified region are formed in the modified region so as to define a fuse link of the electrical fuse. The substrate is removed from beneath the fuse link with a selective etching process that removes the semiconductor substrate with a first etch rate that is higher than a second etch rate of the modified region.

    Abstract translation: 电熔丝和形成电熔丝的方法。 植入半导体衬底以限定半导体衬底中的改性区域。 围绕改性区域并且穿透到半导体衬底中的深度大于修饰区域的深度的沟槽形成在修改区域中,以便限定电熔丝的熔断体。 通过选择性蚀刻工艺从熔丝链下方去除衬底,其以比修改区域的第二蚀刻速率高的第一蚀刻速率去除半导体衬底。

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