Offset rejection electrodes
First Claim
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1. A MEMS sensor, comprising:
- a substrate, wherein the substrate is divided by a first and a second axis forming four quadrants on the substrate;
at least one anchor coupled to the substrate;
at least one spring coupled to the at least one anchor;
at least one proof mass coupled to the at least one anchor by the at least one spring, wherein one of the at least one proof mass moves under an external excitation; and
a pattern of sensing elements on the substrate to detect motion of the at least one proof mass relative to the substrate, wherein the pattern of sensing elements comprises at least three sensing elements in each of the four quadrants.
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Abstract
A MEMS sensor that comprises a sensing reference plane, at least one anchor coupled to the sensing reference plane, wherein the sensing reference plane is divided by a first and a second axis forming four quadrants on the sensing reference plane, at least one proof mass coupled to the at least one anchor, wherein one of the at least one proof mass moves under an external excitation, and a pattern of sensing elements on the sensing reference plane to detect motion normal of the at least one proof mass relative to the sensing reference plane, wherein the pattern of sensing elements comprises at least three sensing elements in each of the four quadrants.
39 Citations
17 Claims
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1. A MEMS sensor, comprising:
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a substrate, wherein the substrate is divided by a first and a second axis forming four quadrants on the substrate; at least one anchor coupled to the substrate; at least one spring coupled to the at least one anchor; at least one proof mass coupled to the at least one anchor by the at least one spring, wherein one of the at least one proof mass moves under an external excitation; and a pattern of sensing elements on the substrate to detect motion of the at least one proof mass relative to the substrate, wherein the pattern of sensing elements comprises at least three sensing elements in each of the four quadrants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A MEMS sensor, comprising:
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a substrate, wherein the substrate is divided by a first and a second axis forming four quadrants on the substrate; at least one anchor coupled to the substrate; at least one proof mass coupled to the at least one anchor, wherein one of the at least one proof mass moves under an external excitation; and a pattern of sensing elements on the substrate to detect motion of the at least one proof mass relative to the substrate, wherein the pattern of sensing elements comprises four sensing elements in each of the four quadrants, each of the four quadrants comprising two outside sensing electrodes of a first polarity and two inside sensing electrodes of a second polarity, wherein the two inside sensing electrodes are adjacent. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification