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    • 6. 发明申请
    • NONVOLATILE MEMORY DEVICES WITH RECESSED WORD LINES
    • 带有残留字线的非易失性存储器件
    • US20090121276A1
    • 2009-05-14
    • US12267679
    • 2008-11-10
    • Tea-Kwang YuJeong-Uk HanYong-Tae Kim
    • Tea-Kwang YuJeong-Uk HanYong-Tae Kim
    • H01L29/788
    • H01L27/115H01L27/11521H01L27/11524
    • A nonvolatile memory device includes a substrate, a device isolation region disposed in the substrate and abutting a sidewall of an active region defined in the substrate, the device isolation region having a recessed portion and a word line crossing the active region and the recessed portion of the device isolation region and conforming to the sidewall adjacent the recessed portion of the device isolation region. The nonvolatile memory device may further include a sense line crossing the active region and the device isolation region parallel to the word line, the sense line overlying a portion of the device isolation region having a top surface at substantially the same level as a top surface of the active region. An edge of the active region adjacent the sidewall may be rounded.
    • 非易失性存储器件包括衬底,器件隔离区域,设置在衬底中并邻接限定在衬底中的有源区域的侧壁,器件隔离区域具有与有源区域交叉的凹陷部分和字线,凹部 器件隔离区域并且与邻近器件隔离区域的凹部的侧壁一致。 非易失性存储器件还可以包括与激活区域和器件隔离区域平行于字线交叉的检测线,覆盖器件隔离区域的一部分的感测线具有与顶表面基本相同的水平的顶表面 活跃区域。 邻近侧壁的有源区域的边缘可以是圆形的。