发明名称 Semiconductor devices having gradual slope contacts
摘要 The present invention is directed to a method for forming semiconductor devices and semiconductor device precursors having gradual slope contacts. The method for forming a semiconductor precursor includes the steps of: forming a layer of conductive material in a first layer; forming a layer of a hard mask material onto at least a portion of the first layer; etching the layer of hard mask material to expose a portion of the first layer; forming facets on the layer of hard mask material; and forming a via in the first layer such that the via extends through the first layer to expose at least a portion of the layer of conductive material.
申请公布号 US2002130420(A1) 申请公布日期 2002.09.19
申请号 US20020078831 申请日期 2002.02.18
申请人 TANG SANH DANG 发明人 TANG SANH DANG
分类号 H01L21/768;H01L23/522;(IPC1-7):H01L23/48 主分类号 H01L21/768
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