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    • 10. 发明授权
    • Guard ring structures for high voltage CMOS/low voltage CMOS technology using LDMOS (lateral double-diffused metal oxide semiconductor) device fabrication
    • 使用LDMOS(横向双扩散金属氧化物半导体)器件制造的高压CMOS /低电压CMOS技术的保护环结构
    • US07541247B2
    • 2009-06-02
    • US11778414
    • 2007-07-16
    • Steven Howard Voldman
    • Steven Howard Voldman
    • H01L21/336H01L21/761
    • H01L29/7835H01L29/0619H01L29/0692H01L29/1083H01L29/1087H01L29/66659
    • A semiconductor structure and a method for forming the same. The method includes providing a semiconductor structure. The semiconductor structure includes a semiconductor substrate. The method further includes simultaneously forming a first doped transistor region of a first transistor and a first doped guard-ring region of a guard ring on the semiconductor substrate. The first doped transistor region and the first doped guard-ring region comprise dopants of a first doping polarity. The method further includes simultaneously forming a second doped transistor region of the first transistor and a second doped guard-ring region of the guard ring on the semiconductor substrate. The second doped transistor region and the second doped guard-ring region comprise dopants of the first doping polarity. The second doped guard-ring region is in direct physical contact with the first doped guard-ring region. The guard ring forms a closed loop around the first and second doped transistor regions.
    • 一种半导体结构及其形成方法。 该方法包括提供半导体结构。 半导体结构包括半导体衬底。 该方法还包括在半导体衬底上同时形成第一晶体管的第一掺杂晶体管区域和保护环的第一掺杂保护环区域。 第一掺杂晶体管区域和第一掺杂保护环区域包括第一掺杂极性的掺杂剂。 该方法还包括在半导体衬底上同时形成第一晶体管的第二掺杂晶体管区域和保护环的第二掺杂保护环区域。 第二掺杂晶体管区域和第二掺杂保护环区域包括第一掺杂极性的掺杂剂。 第二掺杂保护环区域与第一掺杂保护环区域直接物理接触。 保护环围绕第一和第二掺杂晶体管区域形成闭环。