Printed capacitive sensor
First Claim
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1. A capacitive sensor comprising:
- a first flexible, resilient dielectric layer having a first and second side;
an electrically conductive detector and trace layer on the first side of the first dielectric layer comprising a detector and trace;
a first electrically conductive reference plate layer on a second side of the first dielectric layer comprising at least one hole in the layer wherein at least a portion of the hole overlaps with the detector; and
, a capacitive meter electrically connected to the detector and trace layer and to the first reference plate layer.
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Abstract
The invention relates to a flexible, resilient capacitive sensor suitable for large-scale manufacturing. The sensor comprises a dielectric, an electrically conductive detector and trace layer on the first side of the dielectric layer comprising a detector and trace, an electrically conductive reference layer on a second side of the dielectric layer, and a capacitance meter electrically connected to the trace and to the conductive reference layer to detect changes in capacitance upon interaction with detector. The sensor is shielded to reduce the effects of outside interference.
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Citations
20 Claims
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1. A capacitive sensor comprising:
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a first flexible, resilient dielectric layer having a first and second side;
an electrically conductive detector and trace layer on the first side of the first dielectric layer comprising a detector and trace;
a first electrically conductive reference plate layer on a second side of the first dielectric layer comprising at least one hole in the layer wherein at least a portion of the hole overlaps with the detector; and
,a capacitive meter electrically connected to the detector and trace layer and to the first reference plate layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A capacitive sensor comprising:
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a first flexible, resilient dielectric layer having a first and second side;
an electrically conductive detector and trace layer on the first side of the first dielectric layer comprising a detector and trace;
a first electrically conductive reference plate layer on a second side of the first dielectric layer comprising at least one hole in the layer wherein at least a portion of the hole overlaps with the detector; and
,a second flexible, resilient dielectric layer on the electrically conductive detector and trace layer on the side opposite the first flexible, resilient dielectric layer;
a second electrically conductive reference plate layer on the second flexible, resilient dielectric layer on the side opposite the electrically conductive detector and trace layer; and
,a capacitive meter electrically connected to the detector and trace layer, the first reference plate layer, and the second reference plate layer. - View Dependent Claims (19, 20)
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Specification