Schottky barrier diode with perimeter capacitance well junction
    11.
    发明授权
    Schottky barrier diode with perimeter capacitance well junction 有权
    肖特基势垒二极管,具有周边电容阱结

    公开(公告)号:US08421181B2

    公开(公告)日:2013-04-16

    申请号:US12840791

    申请日:2010-07-21

    IPC分类号: H01L29/66

    摘要: A Schottky barrier diode comprises a first-type substrate, a second-type well isolation region on the first-type substrate, and a first-type well region on the second-type well isolation region. With embodiments herein a feature referred to as a perimeter capacitance well junction ring is on the second-type well isolation region. A second-type well region is on the second-type well isolation region. The perimeter capacitance well junction ring is positioned between and separates the first-type well region and the second-type well region. A second-type contact region is on the second-type well region, and a first-type contact region contacts the inner portion of the first-type well region. The inner portion of the first-type well region is positioned within the center of the first-type contact region. Additionally, a first ohmic metallic layer is on the first-type contact region and a second ohmic metallic layer is on the first-type well region. The first ohmic metallic layer contacts the second ohmic metallic layer at a junction that makes up the Schottky barrier of the Schottky barrier diode.

    摘要翻译: 肖特基势垒二极管包括第一类型衬底,第一类型衬底上的第二类型阱隔离区域和第二类型阱隔离区域上的第一类型阱区域。 在这里的实施例中,被称为周边电容阱接合环的特征在第二类型的隔离区域上。 第二类型井区域位于第二类型井隔离区域上。 周边电容阱接合环位于第一类型阱区域和第二类型阱区域之间并分离。 第二类型接触区域位于第二类型阱区域上,并且第一类型接触区域接触第一类型阱区域的内部部分。 第一类型阱区域的内部位于第一类型接触区域的中心内。 此外,第一欧姆金属层位于第一类型接触区域上,第二欧姆金属层位于第一类型阱区域上。 第一欧姆金属层在构成肖特基势垒二极管的肖特基势垒的结处接触第二欧姆金属层。