发明名称 Ballast resistor for super-high-voltage devices
摘要 An integrated circuit (IC) including a well region of the IC having a first doping level and a plurality of semiconductor regions implanted in the well region. Each of the plurality of semiconductor regions has a second doping level. The second doping level is greater than the first doping level. A plurality of polysilicon regions are arranged on the plurality of semiconductor regions. The polysilicon regions are respectively connected to the semiconductor regions. The plurality of semiconductor regions is a drain of a metal-oxide semiconductor field-effect transistor (MOSFET).
申请公布号 US8981484(B2) 申请公布日期 2015.03.17
申请号 US201213467666 申请日期 2012.05.09
申请人 Marvell World Trade Ltd. 发明人 Sutardja Sehat;Krishnamoorthy Ravishanker;Chui Siew Yong
分类号 H01L23/62;H01L29/78;H01L29/66;H01L29/08 主分类号 H01L23/62
代理机构 代理人
主权项 1. An integrated circuit (IC), comprising: a well region of the IC having a first doping level; a plurality of semiconductor regions implanted in the well region, wherein each of the plurality of semiconductor regions has a second doping level, and wherein the second doping level is greater than the first doping level; and a plurality of polysilicon regions arranged on each of the plurality of semiconductor regions, wherein the polysilicon regions are respectively connected directly to the plurality of semiconductor regions, and wherein the plurality of polysilicon regions have a resistance of at least one Ohm, wherein arranging the plurality of polysilicon regions on each of the plurality of semiconductor regions degenerates conductivity and increases resistivity of the plurality of semiconductor regions, wherein the plurality of semiconductor regions forms a drain of a high-voltage metal-oxide semiconductor field-effect transistor (MOSFET), and wherein the high-voltage MOSFET has a higher voltage rating and size than a low-power signal MOSFET.
地址 St. Michael BB