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公开(公告)号:US20130344667A1
公开(公告)日:2013-12-26
申请号:US13528375
申请日:2012-06-20
申请人: Ganming Qin , Edouard D. de Frésart , Peilin Wang , Pon S. Ku
发明人: Ganming Qin , Edouard D. de Frésart , Peilin Wang , Pon S. Ku
IPC分类号: H01L21/336
CPC分类号: H01L29/7813 , H01L21/26586 , H01L29/66727 , H01L29/66734
摘要: A high voltage vertical field effect transistor device (101) is fabricated in a substrate (102, 104) using angled implantations (116, 120) into trench sidewalls formed above recessed gate poly layers (114) to form self-aligned N+ regions (123) adjacent to the trenches and along an upper region of an elevated substrate. With a trench fill insulator layer (124) formed over the recessed gate poly layers (114), self-aligned P+ body contact regions (128) are implanted into the elevated substrate without counter-doping the self-aligned N+ regions (123), and a subsequent recess etch removes the elevated substrate, leaving self-aligned N+ source regions (135-142) and P+ body contact regions (130-134).
摘要翻译: 使用成角度的注入(116,120)形成在形成自对准N +区域(123)的沟槽侧壁中的衬底(102,104)中来制造高电压垂直场效应晶体管器件(101) )并且沿着升高的基底的上部区域。 利用形成在凹陷多晶硅层(114)上方的沟槽填充绝缘体层(124),将自对准P +体接触区域(128)注入升高的衬底中,而不会反向掺杂自对准的N +区域(123) 并且随后的凹陷蚀刻去除升高的衬底,留下自对准的N +源区(135-142)和P +体接触区(130-134)。
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公开(公告)号:US08895394B2
公开(公告)日:2014-11-25
申请号:US13528375
申请日:2012-06-20
申请人: Ganming Qin , Edouard D. de Frésart , Peilin Wang , Pon S. Ku
发明人: Ganming Qin , Edouard D. de Frésart , Peilin Wang , Pon S. Ku
IPC分类号: H01L21/336 , H01L29/78 , H01L29/66
CPC分类号: H01L29/7813 , H01L21/26586 , H01L29/66727 , H01L29/66734
摘要: A high voltage vertical field effect transistor device (101) is fabricated in a substrate (102, 104) using angled implantations (116, 120) into trench sidewalls formed above recessed gate poly layers (114) to form self-aligned N+ regions (123) adjacent to the trenches and along an upper region of an elevated substrate. With a trench fill insulator layer (124) formed over the recessed gate poly layers (114), self-aligned P+ body contact regions (128) are implanted into the elevated substrate without counter-doping the self-aligned N+ regions (123), and a subsequent recess etch removes the elevated substrate, leaving self-aligned N+ source regions (135-142) and P+ body contact regions (130-134).
摘要翻译: 使用成角度的注入(116,120)形成在形成自对准N +区域(123)的沟槽侧壁中的衬底(102,104)中来制造高电压垂直场效应晶体管器件(101) )并且沿着升高的基底的上部区域。 利用形成在凹陷多晶硅层(114)上方的沟槽填充绝缘体层(124),将自对准P +体接触区域(128)注入升高的衬底中,而不会反向掺杂自对准的N +区域(123) 并且随后的凹陷蚀刻去除升高的衬底,留下自对准的N +源区(135-142)和P +体接触区(130-134)。
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