Biometric sensor stack structure
First Claim
Patent Images
1. An electronic device, comprising:
- a trim defining an aperture;
a cap disposed in the aperture;
a rigid biometric sensor coupled to a bottom surface of the cap;
a stiffening plate coupled to the trim below the cap, wherein a space is defined between the rigid biometric sensor and the stiffening plate; and
a switch positioned below the stiffening plate;
wherein;
at least the cap, the stiffening plate, and the sensor are configured to move downward when a force is exerted on an outer surface of the cap.
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Abstract
Various structures and methods are disclosed for packaging a biometric sensor, such as a capacitive biometric sensor. Embodiments incorporate various placements of the biometric sensor, structure surrounding a biometric sensor, connection structures (electrical, physical, or both), and techniques for enhanced sensor imaging, sensor retention, and guiding a user'"'"'s finger to a proper location above a biometric sensor. For example, A biometric sensor assembly can include an aperture formed in a trim with a cap disposed in the aperture. A biometric sensor may be positioned below the cap and a switch positioned below the biometric sensor.
188 Citations
16 Claims
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1. An electronic device, comprising:
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a trim defining an aperture; a cap disposed in the aperture; a rigid biometric sensor coupled to a bottom surface of the cap; a stiffening plate coupled to the trim below the cap, wherein a space is defined between the rigid biometric sensor and the stiffening plate; and a switch positioned below the stiffening plate;
wherein;at least the cap, the stiffening plate, and the sensor are configured to move downward when a force is exerted on an outer surface of the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a biometric sensor stack in an electronic device, wherein the biometric sensor stack comprises a structure surrounding a cap, a rigid biometric sensor positioned below the cap, a stiffening plate below the cap and set apart from at least the rigid biometric sensor by a space, and a switch positioned below the biometric sensor, the method comprising:
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capturing biometric data using the biometric sensor when an external object is grounded by at least a portion of the structure surrounding the cap; and signaling an input to the electronic device by activating the switch based on a downward movement of at least the cap, the stiffening plate, and the biometric sensor when a force is exerted on the cap. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification