发明名称 |
Method of fabricating a bottle trench and a bottle trench capacitor |
摘要 |
A method of fabricating a bottle trench and a bottle trench capacitor. The method including: providing a substrate; forming a trench in the substrate, the trench having sidewalls and a bottom, the trench having an upper region adjacent to a top surface of the substrate and a lower region adjacent to the bottom of the trench; forming an oxidized layer of the substrate in the bottom region of the trench; and removing the oxidized layer of the substrate from the bottom region of the trench, a cross-sectional area of the lower region of the trench greater than a cross-sectional area of the upper region of the trench.
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申请公布号 |
US7670901(B2) |
申请公布日期 |
2010.03.02 |
申请号 |
US20080033984 |
申请日期 |
2008.02.20 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION;INFINEON TECHNOLOGIES NORTH AMERICA CORP.;INFINEON TECHNOLOGIES AG |
发明人 |
KWON OH-JUNG;SETTLEMYER, JR. KENNETH T.;RAMACHANDRAN RAVIKUMAR;KIM MIN-SOO |
分类号 |
H01L21/762 |
主分类号 |
H01L21/762 |
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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