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公开(公告)号:US06373100B1
公开(公告)日:2002-04-16
申请号:US09033628
申请日:1998-03-04
申请人: Irenee M. Pages , Quang X. Nguyen , Cynthia Trigas , Edouard de Frésart , Hak-Yam Tsoi , Rainer Thoma , Jeffrey Pearse
发明人: Irenee M. Pages , Quang X. Nguyen , Cynthia Trigas , Edouard de Frésart , Hak-Yam Tsoi , Rainer Thoma , Jeffrey Pearse
IPC分类号: H01L2976
CPC分类号: H01L29/7809 , H01L29/41741 , H01L29/41766 , H01L29/41775
摘要: A vertically diffused FET (10) is fabricated on a semiconductor die (11) that includes an N+ substrate (12) and an N− epitaxial layer (14). The FET (10) has a source region (36) and a channel region (38) near a front surface (15) of the epitaxial layer (14), and a drain region in the substrate (12). A trench (22) extends through the epitaxial layer (14) to the substrate (12). A conductive layer (24) fills the trench (22), thereby forming a conductive plug (25) electrically coupled to the substrate (12). The conductive plug (25) forms a top side drain electrode of the FET (10).
摘要翻译: 垂直扩散的FET(10)制造在包括N +衬底(12)和N外延层(14)的半导体管芯(11)上。 FET(10)在外延层(14)的前表面(15)附近具有源极区(36)和沟道区(38),以及衬底(12)中的漏极区。 沟槽(22)延伸穿过外延层(14)到衬底(12)。 导电层(24)填充沟槽(22),由此形成电耦合到衬底(12)的导电插塞(25)。 导电插头(25)形成FET(10)的顶侧漏电极。