Protective structure and manufacturing method thereof
    24.
    发明专利
    Protective structure and manufacturing method thereof 审中-公开
    保护结构及其制造方法

    公开(公告)号:JP2004056119A

    公开(公告)日:2004-02-19

    申请号:JP2003160554

    申请日:2003-06-05

    CPC classification number: H01L21/76237

    Abstract: PROBLEM TO BE SOLVED: To improve a leakage current characteristic at or below the threshold of a trench discrete type FET element.
    SOLUTION: A slot in a vertical direction is formed in an stacked structure 14 adhered to a silicon substrate 10 covered with an oxide 12, and thereafter a spacer is formed on the sidewall of the slot. Then, a trench is formed in the substrate 10 by etching. A horizontal ledge appears adjacent to the trench, on the exposed surface of the substrate covered with the oxide by removal of the spacer. The conduction of an end in the element is suppressed by injecting a proper impurity into this ledge.
    COPYRIGHT: (C)2004,JPO

    Abstract translation: 要解决的问题:提高等于或低于沟槽离散型FET元件的阈值的漏电流特性。 解决方案:垂直方向的槽形成在粘附到被氧化物12覆盖的硅衬底10上的堆叠结构14中,然后在槽的侧壁上形成间隔件。 然后,通过蚀刻在衬底10中形成沟槽。 水平凸缘出现在沟槽附近,通过移除间隔件,在被氧化物覆盖的基板的暴露表面上。 通过在该凸缘中注入适当的杂质来抑制元件中端部的导通。 版权所有(C)2004,JPO

    ADJUSTMENT OF THRESHOLD VOLTAGE AT CORNER OF MOSFET DEVICE

    公开(公告)号:JPH10214965A

    公开(公告)日:1998-08-11

    申请号:JP855498

    申请日:1998-01-20

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To adjust the threshold voltage at the corner of a device without requiring any additional mask by doping the central part of a channel region at some concentration and doping a channel region adjacent to a corner region at a higher concentration. SOLUTION: N type (arsenic) dopant ions 19 are implanted compensatingly. The compensatory implantation is performed in order to compensate for the threshold voltage implantation at the part of the side wall of STI trench structures 18a-18c contiguous to the corner of a substrate 12 other than the corner region 25 and to suppress the effect of P-type ion implantation 21 in the channel region onto the following stage by means of N type doping ions 19 so that the corner region 25 has a higher doping concentration after boron B doping stage. A spacer 16 prevents the compensatory implantation at the corner of the device except the central channel regions 20a, 20b, 20c and 20d.

    TRANSISTOR DRIVER CIRCUIT
    28.
    发明专利

    公开(公告)号:DE3463332D1

    公开(公告)日:1987-05-27

    申请号:DE3463332

    申请日:1984-05-28

    Applicant: IBM

    Abstract: A driver circuit is provided which includes a field effect transistor having first and second spaced apart semiconductor regions of a given conductivity type and a third semiconductor region of a conductivity type opposite to the given conductivity type interposed between the first and second regions and having a given sustaining voltage serially connected with a capacitor. The circuit further includes means for applying between the first and second spaced apart regions a given supply voltage having a magnitude greater than the magnitude of the sustaining voltage and less than the breakdown voltage of a PN junction formed in the transistor and means including a control voltage applied to the gate electrode of the transistor for initiating current flow between the first and second spaced apart regions when the given supply voltage is applied between the first and second spaced apart regions.

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