Biometric image sensing
First Claim
Patent Images
1. An assembly combining a fingerprint sensor with a switch, the assembly comprising:
- a flexible fingerprint sensor comprising;
a flexible dielectric substrate,a plurality of drive lines configured to transmit a signal, anda plurality of pickup lines configured to receive at least a portion of the signal transmitted by the drive lines, wherein the pickup lines are oriented transversely to the drive lines and are physically separated from the drive lines by the flexible dielectric substrate to form a sensing area having a two dimensional array of electrode pairs that are impedance sensitive to detect ridge and valley features of a finger proximally located with respect to at least a portion of the sensing area; and
a sensor switch assembly comprising;
a base having a top surface, wherein the sensing area of the flexible fingerprint sensor is disposed over the top surface of the base, anda switch below the sensing area,wherein the flexible fingerprint sensor and the sensor switch assembly are constructed and arranged to allow a user to contact the switch by placing a finger on the sensing area over the switch.
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Abstract
A 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 drive lines to form intrinsic electrode pairs that are impedance sensitive at each of the drive and pickup proximal locations. A switch is integrated with the sensor.
717 Citations
20 Claims
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1. An assembly combining a fingerprint sensor with a switch, the assembly comprising:
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a flexible fingerprint sensor comprising; a flexible dielectric substrate, a plurality of drive lines configured to transmit a signal, and a plurality of pickup lines configured to receive at least a portion of the signal transmitted by the drive lines, wherein the pickup lines are oriented transversely to the drive lines and are physically separated from the drive lines by the flexible dielectric substrate to form a sensing area having a two dimensional array of electrode pairs that are impedance sensitive to detect ridge and valley features of a finger proximally located with respect to at least a portion of the sensing area; and a sensor switch assembly comprising; a base having a top surface, wherein the sensing area of the flexible fingerprint sensor is disposed over the top surface of the base, and a switch below the sensing area, wherein the flexible fingerprint sensor and the sensor switch assembly are constructed and arranged to allow a user to contact the switch by placing a finger on the sensing area over the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A sensing module, comprising:
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a fingerprint sensor assembly, comprising; a rigid base having a top surface; and a folded flexible sensor covering the top surface of the rigid base and at least partially wrapped around the rigid base to form a sensing surface, and a switch disposed beneath the sensing surface, wherein the fingerprint sensor assembly and the switch are constructed and arranged to enable a finger placed on the sensing surface to activate the switch. - View Dependent Claims (20)
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Specification