Fingerprint sensor in an electronic device
First Claim
1. An electronic device, comprising:
- a display stack comprising;
a cover sheet disposed over a display layer;
a full panel capacitive fingerprint sensor configured to capture a fingerprint image of a finger positioned on a top surface of the cover sheet, the full panel capacitive fingerprint sensor also functioning as a touch sensing device; and
one or more vias formed through at least a portion of the cover sheet above the full panel capacitive fingerprint sensor to shape an electric field passing through the cover sheet; and
a first remote electronics disposed at an edge of the full panel capacitive fingerprint sensor and operably connected to the full panel capacitive fingerprint sensor;
wherein the cover sheet comprises;
a first cover sheet disposed over the full panel capacitive fingerprint sensor; and
a second cover sheet disposed below the full panel capacitive fingerprint sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
A fingerprint sensor is incorporated in a display stack in an electronic device. A single fingerprint can be captured at one time at a single pre-defined fixed location on a display. Alternatively, a single fingerprint can be acquired at one time at any location on a display. Alternatively, multiple touches on the display can be acquired substantially simultaneously where only one fingerprint is captured at a time or where all of the fingerprints are acquired at the same time. The fingerprint sensor can be implemented as an integrated circuit connected to a bottom surface of a cover sheet, near the bottom surface of the cover sheet, or connected to a top surface of a display. Alternatively, the fingerprint sensor can be implemented as a full panel fingerprint sensor.
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Citations
14 Claims
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1. An electronic device, comprising:
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a display stack comprising; a cover sheet disposed over a display layer; a full panel capacitive fingerprint sensor configured to capture a fingerprint image of a finger positioned on a top surface of the cover sheet, the full panel capacitive fingerprint sensor also functioning as a touch sensing device; and one or more vias formed through at least a portion of the cover sheet above the full panel capacitive fingerprint sensor to shape an electric field passing through the cover sheet; and a first remote electronics disposed at an edge of the full panel capacitive fingerprint sensor and operably connected to the full panel capacitive fingerprint sensor;
wherein the cover sheet comprises;a first cover sheet disposed over the full panel capacitive fingerprint sensor; and a second cover sheet disposed below the full panel capacitive fingerprint sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device, comprising:
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a display stack comprising; a cover sheet disposed over a display layer; a full panel ultrasonic fingerprint sensor positioned below the cover sheet and configured to capture a fingerprint image of a finger positioned on a top surface of the cover sheet; and one or more vias formed through at least a portion of the cover sheet above the fingerprint sensor to shape an electric field passing through the cover sheet;
the full panel ultrasonic fingerprint sensor comprising;an ultrasonic piezoelectric receiver layer attached to an intermediate layer in the display stack, wherein the intermediate layer is positioned between the cover sheet and the display layer; and an ultrasonic piezoelectric transmitter layer below the ultrasonic piezoelectric receiver layer, wherein the display layer is positioned between the ultrasonic piezoelectric receiver layer and the ultrasonic piezoelectric transmitter layer. - View Dependent Claims (12)
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13. A display for an electronic device, the display comprising:
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a cover sheet disposed over a touch sensing layer; a display layer disposed below the touch sensing layer; an ultrasonic receiver layer disposed below the display layer; an ultrasonic transmitter layer disposed below the ultrasonic receiver layer; and a fingerprint sensor positioned between the ultrasonic receiver layer and the ultrasonic transmitter layer. - View Dependent Claims (14)
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Specification