发明名称 A method of forming low-resistivity connections in non-volatile memories
摘要 <p>The method applies to non-volatile semiconductor memories with cells arranged in rows and in columns, in which each cell has a first terminal (CG), a second terminal (D), and a third terminal (S) connected, respectively, to a row line (WLi), to a column line (BLi), and to a common node by respective connection strips (CG, R). In order to form connections with low resistivity and consequently to save semiconductor area, the method provides for the formation of an oxide layer (I2) which covers the connection strips of the first terminals (CG) and of the third terminals (S), the formation of channels (CH1, CH2) along the connection strips until the surfaces thereof are exposed, and the filling of the channels (CH1, CH2) with a material (W) having a resistivity lower than that of the connection strips. &lt;IMAGE&gt; &lt;IMAGE&gt;</p>
申请公布号 EP1132959(A1) 申请公布日期 2001.09.12
申请号 EP20000830162 申请日期 2000.03.03
申请人 STMICROELECTRONICS S.R.L. 发明人 ATTI, MASSIMO;MAURELLI, ALFONSO;ZATELLI, NICOLA
分类号 H01L21/8247;H01L27/115;(IPC1-7):H01L21/824;H01L21/824 主分类号 H01L21/8247
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