发明名称 |
METHOD FOR PRODUCING SURFACE MICROMECHANICAL STRUCTURES, AND SENSOR |
摘要 |
The invention relates to a method for producing surface micromechanical structures having a high aspect ratio. At least one sacrificial layer (20) is provided between a substrate (30) and a functional layer (10). Trenches (60, 61) are provided in said functional layer (10) by means of a plasma etching process, said trenches uncovering at least some surface areas (21, 22) of the sacrificial layer (20). According to the invention, a further layer (70) is deposited at least partially on the lateral walls of the trenches, but not on the uncovered surface areas (21, 22) of the sacrificial layer (20), in order to increase the aspect ratio of said trenches. The invention also relates to a sensor, especially an acceleration or rotational rate sensor. |
申请公布号 |
WO02062698(A2) |
申请公布日期 |
2002.08.15 |
申请号 |
WO2002DE00397 |
申请日期 |
2002.02.04 |
申请人 |
ROBERT BOSCH GMBH;FISCHER, FRANK;FREY, WILHELM;METZGER, LARS |
发明人 |
FISCHER, FRANK;FREY, WILHELM;METZGER, LARS |
分类号 |
B81B3/00;B81C1/00;G01P15/08;G01P15/125 |
主分类号 |
B81B3/00 |
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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