Semiconductor device
    6.
    发明授权
    Semiconductor device 失效
    半导体器件

    公开(公告)号:US4965656A

    公开(公告)日:1990-10-23

    申请号:US314246

    申请日:1989-02-21

    摘要: This invention provides a semiconductor device having an electrode conductor layer on a semiconductor substrate through the medium of a diffusion barrier layer, comprising the diffusion barrier layer formed of an amorphous material having a higher crystallization temperature than the heat treatment temperature for the semiconductor device. According to this invention, the reaction between the metal conductor and the semiconductor substrate and the diffusion of the conductor material into the semiconductor substrate can be prevented and resultantly a semiconductor device having a high thermal reliability can be obtained.

    摘要翻译: 本发明提供了一种通过扩散阻挡层的介质在半导体衬底上具有电极导体层的半导体器件,该半导体器件包括由具有比半导体器件的热处理温度更高的结晶温度的非晶材料形成的扩散阻挡层。 根据本发明,可以防止金属导体与半导体衬底之间的反应以及导体材料向半导体衬底的扩散,从而可获得具有高热可靠性的半导体器件。

    Method of and apparatus for sputtering, and integrated circuit device
    8.
    发明授权
    Method of and apparatus for sputtering, and integrated circuit device 失效
    溅射方法和装置以及集成电路装置

    公开(公告)号:US5175608A

    公开(公告)日:1992-12-29

    申请号:US574770

    申请日:1990-08-30

    摘要: A thin film forming method and apparatus, wherein a negative voltage is applied alternately to a target and a substrate to perform film formation and reverse sputter alternately. Further, a coil is mounted between the target and the substrate and a high frequency current is made to flow therethrough to generate plasma. A negative base voltage smaller in absolute value than that during sputter may be applied to the substrate to make Ar ions flow into the substrate while it is subjected to reverse sputter. Thus, a film whose step coverage is 0.3 or more is possible. It becomes also possible to maintain a stable discharge and perform reverse sputter in a high vacuum region. The pressure of an Ar atmosphere may be lowered to 10.sup.-3 Torr or less. An aluminum wiring film whose peak value of x-ray diffraction strength at a (111) plane is 150 Kcps or more is possible. Also, a barrier layer having a layered structure of granular and columnar crystals or a mixed structure thereof providing an efficient barrier effect and a large specific resistance is possible.

    摘要翻译: 一种薄膜形成方法和装置,其中负电压交替地施加到靶和基底以进行成膜和交替地反向溅射。 此外,线圈安装在靶和衬底之间,并且使高频电流流过其中以产生等离子体。 绝对值小于溅射时的负基极电压可以施加到衬底上,以使Ar离子在进行反溅射的同时流入衬底。 因此,台阶覆盖度为0.3以上的电影是可能的。 也可以在高真空区域保持稳定的放电并进行反向溅射。 Ar气氛的压力可以降低到10-3乇或更低。 在(111)面的x射线衍射强度的峰值为150Kcps以上的铝配线膜是可能的。 此外,具有粒状和柱状晶体的层叠结构的阻挡层或其提供有效的屏障效应和大电阻率的混合结构是可能的。

    Method of high frequency pulse arc welding and apparatus therefor
    9.
    发明授权
    Method of high frequency pulse arc welding and apparatus therefor 失效
    高频脉冲电弧焊接方法及其设备

    公开(公告)号:US06225598B1

    公开(公告)日:2001-05-01

    申请号:US09112210

    申请日:1998-07-09

    IPC分类号: B23K909

    CPC分类号: B23K9/092

    摘要: In a method for high frequency pulse welding and an apparatus therefor, a highly directive arc can be obtained by eliminating the effect of the inductance of the welding cable, which tends to make the high frequency electromagnetic pinch force large. In a method and an apparatus for high frequency pulse arc welding which is performed by generating an arc between an inconsumable electrode or a consumable electrode arranged near a portion of a base metal to be welded and the base metal with main pulse current, when the main pulse current is shifted from ON to OFF, a reverse pulse current having a polarity opposite to the polarity of the main pulse is supplied between the electrode and the base metal to improve the stiffness (directivity) of the arc by making the rising and falling edges of the pulses steeper. A rail-car and a nuclear power plant obtained by the method are also provided.

    摘要翻译: 在高频脉冲焊接的方法及其装置中,通过消除焊接电缆的电感的影响,可以获得高度指示的电弧,这倾向于使高频电磁夹紧力变大。 在高频脉冲电弧焊接方法和装置中,通过在被焊接的贱金属部分附近设置的不可蚀电极或可消耗电极与主脉冲电流的母材之间产生电弧来进行, 脉冲电流从ON变为OFF,在电极和母材之间提供具有与主脉冲极性相反极性的反向脉冲电流,通过使上升沿和下降沿提高电弧的刚度(方向性) 的脉冲更陡。 还提供了通过该方法获得的轨道车和核电站。