发明名称 Method to remove an oxide seam along gate stack edge, when nitride space formation begins with an oxide liner surrounding gate stack
摘要 An exposed top end of a vertical oxide spacer is removed, and a nitride layer is deposited in an amount sufficient to replace the removed portion prior to exposing a memory device to a self align contact etch process. The nitride layer may be used to prevent a short circuit through the oxide spacer. The present invention also provides memory devices that have a gate stack, a vertical spacer adjacent to the gate stack, in which the vertical spacer has a lower portion comprising an oxide and an upper portion comprising a nitride, and a continuous nitride layer overlaying the vertical spacer and the gate stack. The present invention further provides methods of fabricating the above devices, and processor systems which include the devices.
申请公布号 US7420240(B2) 申请公布日期 2008.09.02
申请号 US20030626620 申请日期 2003.07.25
申请人 MICRON TECHNOLOGY, INC. 发明人 RUDECK PAUL J.
分类号 H01L21/00;H01L21/8247;H01L27/115 主分类号 H01L21/00
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