发明名称 |
Verfahren zum anisotropen Ätzen von Silicium |
摘要 |
The invention concerns a method for the anisotropic etching of features defined by an etching mask, preferably recesses with precisely defined sides in silicon, produced using a plasma etching technique. The invention calls for the etched features to have an extremely high degree of anisotropy while ensuring high mask selectivity. This is achieved by carrying out the anisotropic etching procedure in separate polymerization and etching steps which alternate with each other. |
申请公布号 |
DE4241045(C1) |
申请公布日期 |
1994.05.26 |
申请号 |
DE19924241045 |
申请日期 |
1992.12.05 |
申请人 |
ROBERT BOSCH GMBH, 70469 STUTTGART |
发明人 |
LAERMER, FRANZ, DR., 7000 STUTTGART;SCHILP, ANDREA, 7070 SCHWAEBISCH GMUEND |
分类号 |
H01L21/302;B81C1/00;H01L21/3065;H01L21/308;(IPC1-7):C23F4/00;C30B33/12 |
主分类号 |
H01L21/302 |
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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