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US 2014/0212009 A1Published application
Biometric sensing
AssigneeIdex Asa
InventorsFred G. BENKLEY, III, David Joseph GEOFFROY
Life of this patent
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Abstract
An novel sensor is provided having a plurality of substantially parallel drive lines configured to transmit a signal into a surface of a proximally located object, and also a plurality of substantially parallel pickup lines oriented proximate the drive lines and electrically separated from the pickup lines to form intrinsic electrode pairs that are impedance sensitive at each of the drive and pickup proximal locations.
Claims23
An impedance sensor, comprising:
- a folded substrate mounted around an edge of a user interface device and having a plurality of drive lines and a plurality of pickup line that are located on opposite sides of the folded substrate;
- a dielectric layer between the plurality of drive lines and the plurality of pickup lines;
- and
- a circuit operatively coupled to the substrate and configured to:
- activate at least one of the drive lines, and
- detect a signal on at least one of the pickup lines.
3 more elements
A user interface device, comprising:
- a display screen;
- and
- a sensor comprising:
- a folded substrate mounted around an edge of the display screen and having a plurality of drive lines and a plurality of pickup lines that are located on opposite sides of the folded substrate;
- a dielectric layer between the plurality of drive lines and the plurality of pickup lines;
- and
- a circuit attached to the substrate and configured to:
- activate at least one of the drive lines, and
- detect a signal on at least one of the pickup lines.
6 more elements
Dependencies are inferred from the claim text.