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    • 7. 发明授权
    • Local interconnect having increased misalignment tolerance
    • 本地互连具有增加的不对准公差
    • US07879718B2
    • 2011-02-01
    • US11616544
    • 2006-12-27
    • Simon S. Chan
    • Simon S. Chan
    • H01L21/44
    • H01L27/11568H01L21/76895H01L21/76897H01L23/485H01L27/115H01L27/11521H01L27/11524H01L2924/0002H01L2924/00
    • A method is provided for forming an interconnect in a semiconductor memory device. The method includes forming a pair of source select transistors on a substrate. A source region is formed in the substrate between the pair of source select transistors. A first inter-layer dielectric is formed between the pair of source select transistors. A mask layer is deposited over the pair of source select transistors and the inter-layer dielectric, where the mask layer defines a local interconnect area between the pair of source select transistors having a width less than a distance between the pair of source select transistors. The semiconductor memory device is etched to remove a portion of the first inter-layer dielectric in the local interconnect area, thereby exposing the source region. A metal contact is formed in the local interconnect area.
    • 提供一种用于在半导体存储器件中形成互连的方法。 该方法包括在衬底上形成一对源极选择晶体管。 源区域形成在一对源极选择晶体管之间的衬底中。 在所述一对源极选择晶体管之间形成第一层间电介质。 掩模层沉积在一对源极选择晶体管和层间电介质上,其中掩模层限定了一对源极选择晶体管之间的局部互连区域,其宽度小于一对源选择晶体管之间的距离。 蚀刻半导体存储器件以去除局部互连区域中的第一层间电介质的一部分,从而暴露源极区域。 在局部互连区域中形成金属接触。
    • 8. 发明授权
    • Two-bit memory cell having conductive charge storage segments and method for fabricating same
    • 具有导电电荷存储段的二位存储单元及其制造方法
    • US07538383B1
    • 2009-05-26
    • US11416703
    • 2006-05-03
    • Meng DingSimon S. Chan
    • Meng DingSimon S. Chan
    • H01L29/792
    • H01L29/7923H01L27/115H01L27/11568
    • According to one exemplary embodiment, a two-bit memory cell includes a gate stack situated over a substrate, where the gate stack includes a charge-trapping layer. The charge-trapping layer includes first and second conductive segments and a nitride segment, where the nitride segment is situated between the first and second conductive segments. The nitride segment electrically insulates the first conductive segment from the second conductive segment. The first and second conductive segments provide respective first and second data bit storage locations in the two-bit memory cell. The gate stack can further include a lower oxide segment situated between the substrate and the charge-trapping layer. The gate stack can further include an upper oxide segment situated over the charge-trapping layer. The gate stack can be situated between a first dielectric segment and a second dielectric segment, where the first and second dielectric segments are situated over respective first and second bitlines.
    • 根据一个示例性实施例,两比特存储器单元包括位于衬底上方的栅极堆叠,其中栅极堆叠包括电荷捕获层。 电荷捕获层包括第一和第二导电段和氮化物区段,其中氮化物区段位于第一和第二导电区段之间。 氮化物区段将第一导电段与第二导电段电绝缘。 第一和第二导电段在双位存储单元中提供相应的第一和第二数据位存储单元。 栅极堆叠还可以包括位于衬底和电荷俘获层之间的较低氧化物段。 栅极堆叠还可以包括位于电荷捕获层上方的上部氧化物段。 栅极堆叠可以位于第一介电段和第二介电段之间,其中第一和第二介电段位于相应的第一和第二位线之上。
    • 10. 发明授权
    • Method for avoiding fluorine contamination of copper interconnects
    • 避免铜互连的氟污染的方法
    • US06518173B1
    • 2003-02-11
    • US09640081
    • 2000-08-17
    • Simon S. Chan
    • Simon S. Chan
    • H01L214763
    • H01L21/31111H01L21/31116H01L21/76802
    • Corrosion and degradation of tantalum-based adhesion/barrier layers used in multi-level semiconductor devices employing copper-based interconnect metallization systems are avoided or minimized. In embodiments of the present invention, deleterious fluorine-containing contaminants formed on underlying copper-based metal features as a result of etching through-holes in silicon-based interlevel dielectric material layers for via holes is prevented by the use of fluorine-free etching processes. Other embodiments of the present invention include performing a two-step etching sequence comprising a first, fluorine-containing process and a second, fluorine-free process.
    • 避免或最小化了使用铜基互连金属化系统的多级半导体器件中使用的钽基粘合/阻挡层的腐蚀和降解。 在本发明的实施方案中,通过使用无氟蚀刻工艺来防止由于在用于通孔的硅基层间介电材料层中蚀刻通孔而形成在下面的铜基金属特征上的有害的含氟污染物 。 本发明的其它实施方案包括执行包括第一含氟过程和第二无氟方法的两步蚀刻顺序。