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    • 78. 发明申请
    • ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT
    • 静电放电保护电路
    • US20100044834A1
    • 2010-02-25
    • US12536378
    • 2009-08-05
    • Jae-Young ParkJong-Kyu SongSan-Hong Kim
    • Jae-Young ParkJong-Kyu SongSan-Hong Kim
    • H01L27/06H01L21/8222
    • H01L27/0259H01L27/0823
    • An electrostatic discharge (ESD) protection circuit includes a substrate, and a plurality of unit bipolar transistors formed in the substrate. Each of the plurality of unit bipolar transistors may include a first-conductivity-type buried layer formed in the substrate, a first-conductivity-type well formed over the first-conductivity-type buried layer, a second-conductivity-type well formed in the first-conductivity-type well, a first-conductivity-type vertical doping layer vertically formed from the surface of the substrate to the first-conductivity-type buried layer so as to surround the first-conductivity-type well, and a first-conductivity-type doping layer and a second conductivity-type doping layer formed in the second-conductivity-type well. The first-conductivity-type doping layer of any one of the adjacent unit bipolar transistors and the first-conductivity-type vertical doping layer of another one of the adjacent unit bipolar transistors may be connected to each other.
    • 静电放电(ESD)保护电路包括衬底和形成在衬底中的多个单位双极晶体管。 多个单位双极晶体管中的每一个可以包括形成在基板中的第一导电型掩埋层,在第一导电型掩埋层上形成的第一导电型掩埋层,形成在第二导电型掩埋层中的第二导电型阱 所述第一导电型阱,从所述基板的表面到所述第一导电型掩埋层,以包围所述第一导电型阱的方式垂直形成的第一导电型垂直掺杂层, 导电型掺杂层和形成在第二导电型阱中的第二导电型掺杂层。 相邻单位双极晶体管中的任一个的第一导电型掺杂层和另一个相邻单位双极晶体管的第一导电型垂直掺杂层可以彼此连接。