首页> 外国专利> Termination for superjunction VDMOSFET

Termination for superjunction VDMOSFET

机译:超结VDMOSFET的端接

摘要

A termination for silicon superjunction VDMOSFET comprises heavily doped N-type silicon substrate which also works as drain region; drain metal is disposed on the back surface of the heavily doped N-type silicon substrate; an N-type silicon epitaxial layer is disposed on the heavily doped N-type silicon substrate; P-type silicon columns and N-type silicon columns are formed in the N-type silicon epitaxial layer, alternately arranged; a continuous silicon oxide layer is disposed on a part of silicon surface in the termination; structures that block the drift of mobile ions (several discontinuous silicon oxide layers arranged at intervals) are disposed on the other part of silicon surface in the termination. The structures that block the drift of mobile ions disposed in the termination region are able to effectively prevent movement of the mobile ions and improve the capability of the power device against the contamination induced by the mobile ions.
机译:硅超结VDMOSFET的终端包括重掺杂的N型硅衬底,该衬底也用作漏极区。漏极金属设置在重掺杂的N型硅衬底的背面上。 N型硅外延层设置在重掺杂的N型硅衬底上。在N型硅外延层中形成有交替排列的P型硅柱和N型硅柱。连续氧化硅层设置在终端的硅表面的一部分上。阻止移动离子漂移的结构(间隔排列的多个不连续氧化硅层)位于终端的硅表面的另一部分。阻挡布置在终止区域中的移动离子漂移的结构能够有效地防止移动离子移动,并提高功率器件抵抗移动离子引起的污染的能力。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号