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公开(公告)号:US20090218618A1
公开(公告)日:2009-09-03
申请号:US12041391
申请日:2008-03-03
申请人: Oliver Blank , Uli Hiller , Maximilian Roesch , Walter Rieger
发明人: Oliver Blank , Uli Hiller , Maximilian Roesch , Walter Rieger
IPC分类号: H01L29/78 , H01L21/336
CPC分类号: H01L29/7813 , H01L29/407 , H01L29/41741 , H01L29/4236 , H01L29/42368 , H01L29/42376 , H01L29/4238 , H01L29/66734
摘要: A semiconductor device and method. One embodiments provides a semiconductor substrate having a trench with a sidewall isolation comprising a first isolating material, a field electrode formed in lower portion of the trench, a cover comprising a second material above the field electrode, the second material being selectively etchable to the first isolating material, a gate dielectric on the sidewall in an upper portion of the trench and a gate electrode in the upper portion of the trench.
摘要翻译: 半导体器件和方法。 一个实施例提供了具有沟槽的半导体衬底,侧壁隔离包括第一隔离材料,形成在沟槽下部的场电极,覆盖在场电极上方的第二材料,第二材料可选择性地蚀刻到第一 隔离材料,在沟槽的上部中的侧壁上的栅极电介质和沟槽上部的栅电极。