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    • 37. 发明申请
    • Semiconductor ESD device and method of making same
    • 半导体ESD器件及其制造方法
    • US20080142849A1
    • 2008-06-19
    • US11638067
    • 2006-12-13
    • David AlvarezRichard LindsayManfred EllerCornelius Christian Russ
    • David AlvarezRichard LindsayManfred EllerCornelius Christian Russ
    • H01L29/76
    • H01L21/26513H01L27/027H01L29/0619H01L29/665H01L29/7833
    • An ESD protection device includes a semiconductor body, a gate formed over a channel in the semiconductor body, the channel being doped with a first concentration of dopants of a first conductivity type. A first source/drain region is formed on the surface of the semiconductor body adjacent to a first edge of the gate, wherein the first source/drain region is doped with a dopant of a second conductivity type opposite the first conductivity type, and at least a portion of the first source/drain region is doped with a dopant of the first conductivity type. The concentration of the second conductivity type dopant exceeds the concentration of the first conductivity type dopant, and the concentration of the first conductivity type dopant in the first source/drain exceeds the first concentration. A second source/drain region is also formed at the upper surface of the semiconductor body adjacent to a second edge of the gate, wherein the second source/drain region is doped with a dopant of the second conductivity type.
    • ESD保护器件包括半导体本体,形成在半导体本体中的沟道上的栅极,该沟道掺杂有第一导电类型的掺杂剂的第一浓度。 第一源极/漏极区域形成在与栅极的第一边缘相邻的半导体本体的表面上,其中第一源极/漏极区域掺杂有与第一导电类型相反的第二导电类型的掺杂物,并且至少 第一源/漏区的一部分掺杂有第一导电类型的掺杂剂。 第二导电型掺杂物的浓度超过第一导电型掺杂剂的浓度,并且第一源极/漏极中的第一导电类型掺杂剂的浓度超过第一浓度。 第二源极/漏极区域还形成在与栅极的第二边缘相邻的半导体本体的上表面处,其中第二源极/漏极区域掺杂有第二导电类型的掺杂物。