Method for self-aligning polysilicon gates with field isolation and the
resultant structure
    4.
    发明授权
    Method for self-aligning polysilicon gates with field isolation and the resultant structure 失效
    使用场隔离自对准多晶硅栅极的方法及其结果

    公开(公告)号:US6046088A

    公开(公告)日:2000-04-04

    申请号:US985400

    申请日:1997-12-05

    摘要: A method of forming field isolation in a semiconductor substrate, such as shallow oxide trenches, for isolation of FET transistors, including complementary FETs such as CMOS, with selected sections of said trenches extending above the substrate and being coplanar with the upper surface of subsequently formed polysilicon gates. An etch protective layer is used during the formation and the filling of the trench openings so that the top of the trenches are coplanar with upper surface of the etch protective layer. Selected sections of the trenches are masked and protected prior to planarization of the non-masked trenches to the bottom edge of the etch protective layer. After deposition and planarization of the poly, the upper surface of a deposited polysilicon layer for forming polysilicon gates of FET transistors is coplanar and self-aligned with the upwardly extending selected sections of the field isolation trenches.

    摘要翻译: 在诸如浅​​氧化物沟槽的半导体衬底(例如浅氧化物沟槽)中形成场隔离的方法,用于隔离包括互补FET(例如CMOS)的FET晶体管,所述沟槽的选定部分在衬底上延伸并与随后形成的上表面共面 多晶硅门 在沟槽开口的形成和填充期间使用蚀刻保护层,使得沟槽的顶部与蚀刻保护层的上表面共面。 在将非掩蔽沟槽平坦化到蚀刻保护层的底部边缘之前,将沟槽的选定部分进行掩模和保护。 在多晶硅的沉积和平坦化之后,用于形成FET晶体管的多晶硅栅极的沉积多晶硅层的上表面与场隔离沟槽的向上延伸的选定部分是共面的和自对准的。

    Forming minimal size spaces in integrated circuit conductive lines
    5.
    发明授权
    Forming minimal size spaces in integrated circuit conductive lines 失效
    在集成电路导线中形成最小尺寸空间

    公开(公告)号:US5930659A

    公开(公告)日:1999-07-27

    申请号:US986098

    申请日:1997-12-05

    摘要: A method of forming minimal gaps or spaces in a polysilicon conductive lines pattern for increasing the density of integrated circuits by converting an area of the size of the desired gap or space in the polysilicon to silicon oxide, followed by removing the silicon oxide. The preferred method is to selectively ion implant oxygen into the polysilicon and annealing to convert the oxygen implanted polysilicon to silicon oxide. As an alternative method, an opening in an insulating layer overlying the conductive line is first formed by conventional optical lithography, followed by forming sidewalls in the opening to create a reduced opening and using the sidewalls as a mask to blanket implant oxygen through the reduced opening and into the exposed polysilicon conductive line. After annealing, the implanted polysilicon converted to silicon oxide and removed to form a gap or space in the polysilicon conductive line pattern substantially equal in size to the reduced opening. Instead of blanket implanting with oxygen, thermal oxidation can be used to convert the exposed polysilicon to silicon oxide.

    摘要翻译: 通过将多晶硅中期望的间隙或空间的大小的面积转换为氧化硅,然后除去氧化硅,形成多晶硅导电线图形中的最小间隙或间隔的方法,以增加集成电路的密度。 优选的方法是选择性地将氧注入到多晶硅中并进行退火以将氧注入的多晶硅转化为氧化硅。 作为替代方法,首先通过常规光学光刻形成覆盖在导电线上的绝缘层中的开口,随后在开口中形成侧壁以形成减小的开口,并且使用侧壁作为掩模,以通过缩小开口来覆盖氧气注入氧气 并进入暴露的多晶硅导电线。 在退火之后,注入的多晶硅转变成氧化硅并去除,以在多晶硅导电线图案中形成与缩小的开口大致相等的间隙或空间。 代替用氧气进行全面注入,可以使用热氧化来将暴露的多晶硅转化为氧化硅。

    High speed dynamic differential logic circuit employing capacitance
matching devices
    10.
    发明授权
    High speed dynamic differential logic circuit employing capacitance matching devices 失效
    采用电容匹配器件的高速动态差分逻辑电路

    公开(公告)号:US5959467A

    公开(公告)日:1999-09-28

    申请号:US938250

    申请日:1997-09-26

    摘要: The present invention discloses a differential logic circuit and sensing method providing differential sensing with greater speed and higher density than prior art techniques. One or more input signals are provided to a logic array and two output signals are produced from the logic array wherein one output signal of the logic array is a bit-line and one output signal of the logic array is a bit-bar-line as a reference signal, wherein both signals are provided as input signals to a differential sense amplifier having a binary output signal. The bit-line and the bit-bar-line are precharged to the same voltage level and a controlled input source-grounded transistor having less than fill drive strength is coupled to the bit-bar-line. A source-grounded transistor is coupled to each input signal of the logic array and is programmable to the bit-line by coupling the drain of the source-grounded transistor to the bit-line. A corresponding sourceless transistor, having a gate and a drain, but no source, is coupled to each input signal of the logic array and is programmable to the bit-bar-line by coupling the drain of the sourceless transistor to the bit-bar-line. The source-grounded transistors and the corresponding sourceless transistors are programmed identically providing substantially the same capacitance load on the bit-line and the bit-bar-line.

    摘要翻译: 本发明公开了一种差分逻辑电路和感测方法,其提供比现有技术更高的速度和更高密度的差分感测。 将一个或多个输入信号提供给逻辑阵列,并且从逻辑阵列产生两个输出信号,其中逻辑阵列的一个输出信号是位线,逻辑阵列的一个输出信号是位线,如 参考信号,其中两个信号作为输入信号提供给具有二进制输出信号的差分读出放大器。 位线和位线线被预充电到相同的电压电平,并且具有小于填充驱动强度的受控输入源极接地晶体管耦合到位线。 源极接地晶体管耦合到逻辑阵列的每个输入信号,并且通过将源极接地晶体管的漏极耦合到位线而可编程到位线。 具有栅极和漏极但没有源极的相应的无源晶体管被耦合到逻辑阵列的每个输入信号,并且可通过将无源晶体管的漏极耦合到位 - 线。 源极接地晶体管和相应的无源晶体管被编程相同地在位线和位线上提供基本相同的电容负载。