Force-sensitive fingerprint sensing input
First Claim
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1. An electronic device, comprising:
- an input device depressible in response to a finger;
a resistive element having a mechanically resistive force, the resistive element disposed to resist depression of the input device;
one or more electrodes disposed to provide a measure of capacitance based on a depression of the input device, the measure of capacitance indicating an amount of force associated with the depression of the input device, and at least one of the one or more electrodes being coupled to the resistive element; and
a fingerprint sensor coupled to the input device and configured to capture a fingerprint image in response to the depression of the input device, wherein;
the resistive element is disposed at least partially around the fingerprint sensor.
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Abstract
An object can depress an input device, such as, for example, a function button in an electronic device. A resistive element having a mechanically resistive force can be disposed to resist the depression or movement of the input device. One or more electrodes can be disposed to provide a measure of capacitance based on the depression of the input device. A shield can be disposed to reduce the parasitic capacitance between the one or more electrodes and the object. The electronic device can include a fingerprint sensor operably connected to at least one of the one or more electrodes.
59 Citations
32 Claims
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1. An electronic device, comprising:
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an input device depressible in response to a finger; a resistive element having a mechanically resistive force, the resistive element disposed to resist depression of the input device; one or more electrodes disposed to provide a measure of capacitance based on a depression of the input device, the measure of capacitance indicating an amount of force associated with the depression of the input device, and at least one of the one or more electrodes being coupled to the resistive element; and a fingerprint sensor coupled to the input device and configured to capture a fingerprint image in response to the depression of the input device, wherein; the resistive element is disposed at least partially around the fingerprint sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An electronic device, comprising:
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an input device depressible in response to an applied force by a finger; a fingerprint sensor coupled to the input device and configured to capture a fingerprint image of the finger; a resistive element having a mechanically resistive force, the resistive element disposed at least partially around the fingerprint sensor and disposed to resist depression of the input device; a drive electrode; a sense electrode disposed below the drive electrode, wherein the drive electrode and the sense electrode provide a measure of capacitance based on a depression of the input device; and a processor configured to determine an amount of the applied force based on the measure of capacitance;
wherein;at least one of the drive electrode or the sense electrode is coupled to the resistive element. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. An electronic device, comprising:
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an input device depressible in response to an applied force by a finger; a fingerprint sensor coupled to the input device and configured to capture a fingerprint image of the finger; a resistive element disposed at least partially around the fingerprint sensor and configured to resist depression of the input device; an electrode configured to provide a measure of capacitance based on a depression of the input device; and a processor configured to determine an amount of the applied force based on the measure of capacitance. - View Dependent Claims (32)
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Specification