Protective structure and manufacturing method thereof
    13.
    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

    MEMORY CELL
    15.
    发明专利

    公开(公告)号:JPH11168190A

    公开(公告)日:1999-06-22

    申请号:JP27728998

    申请日:1998-09-30

    Applicant: SIEMENS AG IBM

    Abstract: PROBLEM TO BE SOLVED: To obtain a small trench capacitor having sufficiently low parasitic leakage. SOLUTION: A transistor, which includes a gate and first and second diffused regions are provided. A trench capacitor in a substrate electrically connects a dielectric color part 168 at the upper-side part of a trench, a diffused region embedded in a substrate surrounding the lower part of the trench capacitor, a transitor and the capacitor. A node diffused region is included on a collar part. A third diffused region 269 is provided in a substrate neighboring the color part. In order to decrease the leakage, an adequate concentration of doping agent for enhancing the threshold voltage of the gate of a parasitic transistor, which is formed of the color part, the embedded diffused region and node diffusion, is provided.

    ELECTRON STRUCTURE BODY AND MANUFACTURING METHOD THEREFOR

    公开(公告)号:JP2002270697A

    公开(公告)日:2002-09-20

    申请号:JP2002021072

    申请日:2002-01-30

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide efficient heat radiation which is related to an SOI structure, by forming a semiconductor device located beneath an embedded insulation layer, which is in turn electrically connected to an electrical structure body formed on the SOI structure. SOLUTION: The SOI structure is formed on a bulk semiconductor substrate. A trench, whose one end interfaces with the bulk semiconductor substrate is formed penetrating through the SOI layer. A semiconductor device, comprising a P diffusion region and N diffusion region, is formed on the bulk semiconductor substrate. A conductive plug, which self-matching with the P diffusion region and N diffusion region, while electrically contacting them, is formed in the trench. The semiconductor device formed in the bulk semiconductor substrate can contain an electrostatic discharge(ESD) device. The bulk semiconductor substrate functions as a medium for efficiently radiating heat generated by the (ESD) device, since its thermal conductivity is high.

    ANTI-FUSE STRUCTURE AND ITS FORMING METHOD

    公开(公告)号:JP2001345383A

    公开(公告)日:2001-12-14

    申请号:JP2001160548

    申请日:2001-05-29

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide an anti-fuse structure which can program at a low voltage and current, uses only in an extremely small chip base, and can be formed in a gap between parts which are disposed at intervals of a least lithographic feature size. SOLUTION: An anti-fuse structure is formed on an SOI substrate in combination with a capacitor-like structure which reaches support layer or in the support layer by etching a contact which penetrates an insulator and reaches the support semiconductor layer. This anti-fuse can be programmed by selecting a position forming a conductor or damaging a dielectric of the capacitor-like structure. It is possible to restrict the damages to a desirable position by use of an insulation collar enclosing the conductor or a part of the capacitor-like structure. Thermal influences due to a programming current are isolated into the interior of a bulk silicon layer, whereby a programming during a normal operation of a device is enabled.

    METHOD FOR FORMING SEMICONDUCTOR DEVICE

    公开(公告)号:JP2001007223A

    公开(公告)日:2001-01-12

    申请号:JP2000160941

    申请日:2000-05-30

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a dual work function gate conductor having a self-aligned insulating cap, and a method for forming the dual work function gate conductor. SOLUTION: Two diffusion regions 36 are formed on a substrate 20, and gate stacks 33 and 34 are formed on the substrate 20 between these regions 36. The stacks 33 and 34 have a gate insulating layer 24, and polysilicon layers 26 and 26a on the layer 24, respectively. The layers 26 and 26a are n-type doped and remain intrinsic. A barrier layer 28 is formed on each of the layers 26 and 26a. A dopant source 30 is formed on the layer 28 for both stacks 33 and 34. The layer 28 has a p-type dopant. The stacks 33 and 34 are covered with an insulating cap 32 so that diffusion contacts can be formed on the gates in a borderless manner. When to start activating the source 30 for doping the layers 26 and 26a can be postponed until the desired timing.

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