发明名称 |
DRAM capacitor and method of making the same |
摘要 |
<p>An integrated circuit capacitor includes a first dielectric layer adjacent a substrate and having a trench therein, and a metal plug comprising an upper portion extending upwardly into the trench, and a lower portion disposed in the first dielectric layer. The lower portion has a tapered width which increases in a direction toward the substrate to thereby secure the metal plug in the dielectric layer. Preferably, the upper portion is also tapered. Furthermore, a second dielectric layer is adjacent the metal plug with an upper electrode thereon. <IMAGE></p> |
申请公布号 |
EP1020918(A2) |
申请公布日期 |
2000.07.19 |
申请号 |
EP20000300033 |
申请日期 |
2000.01.06 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
CHAUDHRY, SAMIR;CHETLUR, SUNDAR SRINIVASAN;LAYADI, NACE;ROY, PRADIP KUMAR;VAIDYA, HEM M. |
分类号 |
H01L21/02;H01L21/8242;H01L27/108;(IPC1-7):H01L27/108;H01L21/824 |
主分类号 |
H01L21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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