BIPOLAR TRANSISTOR HAVING SINKER DIFFUSION UNDER A TRENCH
    2.
    发明公开
    BIPOLAR TRANSISTOR HAVING SINKER DIFFUSION UNDER A TRENCH 审中-公开
    BIPOLARTRANSISTOR MIT SENKERDIFFUSION UNTER EINEM GRABEN

    公开(公告)号:EP3017477A1

    公开(公告)日:2016-05-11

    申请号:EP14819416.0

    申请日:2014-07-02

    IPC分类号: H01L29/72 H01L21/331

    摘要: In described examples, a bipolar transistor (100) includes: a substrate (105) having a semiconductor surface (106); and first and second trench enclosures (121, 122), both at least lined with a dielectric extending downward from a topside (106a) of the semiconductor surface (106) to a trench depth. The first trench enclosure (121) defines an inner enclosed area. A base (140) and an emitter (150) formed in the base (140) are within the inner enclosed area. A buried layer (126) is below the trench depth, including under the base (140). A sinker diffusion (115) includes a first portion (115a) between the first and second trench enclosures (121, 122), extending from the topside (106a) of the semiconductor surface (106) to the buried layer, and a second portion (115b) within the inner enclosed area. The second portion (115b) does not extend to the topside (106a) of the semiconductor surface (106).

    摘要翻译: 双极晶体管包括具有半导体表面的衬底,第一沟槽外壳和在第一沟槽外壳外部的第二沟槽外壳,其至少内衬有从半导体表面向下延伸到沟槽深度的电介质,其中第一沟槽外壳限定 内封闭区域。 形成在基座中的基座和发射体在内封闭区域内。 掩埋层位于底部下方的沟槽深度之下。 沉降片扩散包括从半导体表面的顶侧延伸到掩埋层的第一和第二沟槽外壳之间的第一部分和内部封闭区域内的第二部分,其中第二部分不延伸到半导体表面的顶侧 。

    SiC-based IGBT and MISFET with vertical channel and corresponding manufacturing method
    4.
    发明授权
    SiC-based IGBT and MISFET with vertical channel and corresponding manufacturing method 失效
    IGBT和SiC基MISFET垂直沟道和相应的生产方法

    公开(公告)号:EP0904603B1

    公开(公告)日:2008-09-10

    申请号:EP97915797.1

    申请日:1997-03-18

    申请人: CREE, INC.

    摘要: An IGBT of SiC comprises superimposed a drain (1), a highly doped p-type substrate layer (2), a highly doped n-type buffer layer (3), a low doped n-type drift layer (4), a highly doped p-type base layer (5), a highly doped n-type source region layer (6) and source (7). The transistor also comprises a vertical trench (8) extending through the source region layer and the base layer and to the drift layer. It also comprises an additional low doped p-type layer (13) arranged laterally to the base layer, connecting it to an insulating layer (11) and extending vertically at least over the extension of the base layer. A gate electrode (12) is applied on the insulating layer for, upon applying a voltage to the gate electrode, forming a conducting inversion channel at the interface between said additional layer (13) and the insulating layer for electron transport from the source to the drain.

    ELECTROSTATIC DISCHARGE PROTECTION OF ISFET SENSORS
    5.
    发明授权
    ELECTROSTATIC DISCHARGE PROTECTION OF ISFET SENSORS 失效
    静电放电保护,在ISFET传感器

    公开(公告)号:EP0749632B1

    公开(公告)日:2006-08-30

    申请号:EP95908032.6

    申请日:1995-01-12

    申请人: HONEYWELL INC.

    摘要: Methods, apparatus and chip fabrication techniques are described which provide electrostatic discharge (ESD) protection to ion-sensitive field effect transistors (ISFET) based device (250) used to selectively measure ions in liquid (299). According to one aspect of the invention, an ESD protection circuit, made up of conventional protective elements (201, 202, 206), is integrated onto the same silicon chip on which ISFET (250) is formed, along with interface (203) that is in contact with liquid (299) being measured and which does not open up paths for D.C. leakage currents between ISFET (250) and liquid (299). According to a preferred embodiment of the invention, a capacitor structure is used as interface (203) between protection circuit (201, 202, 206) and liquid sample (299). Further aspects of the invention are directed to methods per se for providing ESD protection for ISFET sensors utilizing interface means (203) (e.g., capacitor structure) referred to hereinabove, and processes for fabricating the novel interface on a silicone wafer.