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    • 7. 发明申请
    • NAND ARRAY SOURCE/DRAIN DOPING SCHEME
    • NAND阵列源/排水计划
    • US20110221006A1
    • 2011-09-15
    • US12722014
    • 2010-03-11
    • Chun ChenShenqing Fang
    • Chun ChenShenqing Fang
    • H01L27/088H01L21/8239
    • H01L27/11524H01L27/11521
    • An electronic device includes a substrate having isolation features defining active regions coextending over a surface of the substrate. The device also includes coextending line patterns crossing over the active regions, including string and ground selection lines and word lines between the string and ground selection lines. The device further includes first implant regions of a first conductivity type in the active regions between the word lines and having a first carrier concentration. The device further includes second implant regions of the first conductivity type in the active regions between edge ones of the word lines and an adjacent one of the string selection line and the ground selection line. In the device, the second implant region includes a low doping portion abutting the edge word lines and a high doping portion spaced from the edge word line by the low doping portion and having a second carrier concentration greater than the first carrier concentration.
    • 电子器件包括具有限定在衬底的表面上共同延伸的有源区的隔离特征的衬底。 该装置还包括跨越有源区域的共同延伸的线图案,包括串和地选择线以及串和地选择线之间的字线。 该器件还包括位于字线之间的有源区中的第一导电类型的第一注入区,并具有第一载流子浓度。 该器件还包括第一导电类型的第二注入区域,位于字线的边缘之间的有源区和串选择线和地选择线中相邻的一个之间。 在器件中,第二注入区域包括邻接边缘字线的低掺杂部分和通过低掺杂部分与边缘字线间隔开的高掺杂部分,并且具有大于第一载流子浓度的第二载流子浓度。