发明名称 |
Differential pressure sensor using dual backside absolute pressure sensing |
摘要 |
A MEMS differential pressure sensing element is provided by two separate silicon dies attached to opposite sides of a silicon or glass spacer, the sides of which are recessed and the recesses formed therein at least partially evacuated. The dies are attached to the spacer using silicon-to-silicon bonding provided in part by silicon oxide layers if a silicon spacer is used. The dies can be also attached to the spacer using anodic bonding if a glass spacer is used. Conductive vias extend through the layers and provide electrical connections between Wheatstone bridge circuits formed from piezoresistors in the silicon dies.
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申请公布号 |
US8171800(B1) |
申请公布日期 |
2012.05.08 |
申请号 |
US201113013237 |
申请日期 |
2011.01.25 |
申请人 |
CONTINENTAL AUTOMOTIVE SYSTEMS, INC. |
发明人 |
CHIOU JEN-HUANG ALBERT |
分类号 |
G01L13/02;G01L9/06 |
主分类号 |
G01L13/02 |
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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