Fingerprint sensing assemblies and methods of making
First Claim
Patent Images
1. A fingerprint sensing module comprising:
- a sensor substrate having a sensing side to receive a finger swipe and a circuit side, opposite the sensing side, having circuitry formed thereon, wherein the sensor substrate isolates the circuitry from the finger swipe;
an image sensor including conductive traces formed on the circuit side of the sensor substrate; and
a sensor circuit including at least one integrated circuit mounted on the circuit side of the sensor substrate and electrically connected to the image sensor.
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Abstract
A fingerprint sensing module includes a sensor substrate having a sensing side and a circuit side, an image sensor including conductive traces on the circuit side of the sensor substrate, and a sensor circuit including at least one integrated circuit mounted on the circuit side of the sensor substrate and electrically connected to the image sensor. The sensor substrate may be a flexible substrate. The module may include a velocity sensor on the sensor substrate or on a separate substrate. The module may further include a rigid substrate, and the sensor substrate may be affixed to the rigid substrate.
333 Citations
31 Claims
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1. A fingerprint sensing module comprising:
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a sensor substrate having a sensing side to receive a finger swipe and a circuit side, opposite the sensing side, having circuitry formed thereon, wherein the sensor substrate isolates the circuitry from the finger swipe; an image sensor including conductive traces formed on the circuit side of the sensor substrate; and a sensor circuit including at least one integrated circuit mounted on the circuit side of the sensor substrate and electrically connected to the image 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, 23)
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24. A fingerprint sensing module comprising:
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a flexible substrate having a sensing side to receive a finger swipe and a circuit side, opposite the sensing side, having circuitry formed thereon, wherein the flexible substrate isolates the circuitry from the finger swipe; an image sensor including conductive traces formed on the circuit side of the flexible substrate; a velocity sensor including conductive traces formed on the circuit side of the flexible substrate; a sensor circuit including at least one integrated circuit mounted on the circuit side of the flexible substrate and electrically connected to the image sensor and the velocity sensor; and a rigid substrate, wherein the circuit side of the flexible substrate is affixed to a surface of the rigid substrate.
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25. A fingerprint sensing module comprising:
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a rigid substrate; an image sensor including conductive traces formed on the substrate, wherein the image sensor comprises a linear array of capacitive sensors for capacitive sensing of ridge peaks and ridge valleys of a fingerprint on a moving finger; a velocity sensor including conductive traces formed on the substrate; and a sensor circuit including at least one integrated circuit mounted on the substrate and electrically connected to the image sensor and the velocity sensor, wherein the image sensor, the velocity sensor and the sensor circuit are mounted on a first surface of the rigid substrate. - View Dependent Claims (26, 27, 28)
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29. A method for making a fingerprint sensing module, comprising:
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providing a flexible substrate having a sensing side to receive a finger swipe and a circuit side, opposite the sensing side, having circuitry formed thereon, wherein the flexible substrate isolates the circuitry from the finger swipe; forming an image sensor including conductive traces on the circuit side of the flexible substrate; forming a velocity sensor including conductive traces on the circuit side of the flexible substrate; mounting a sensor circuit including at least one integrated circuit on the circuit side of the flexible substrate; and affixing the circuit side of the flexible substrate to a surface of a rigid substrate.
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30. A fingerprint sensing module comprising:
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a first flexible substrate having an image sensor including conductive traces formed thereon, and a sensor integrated circuit mounted on the first flexible substrate and electrically connected to the image sensor; a second flexible substrate having a velocity sensor including conductive traces formed thereon; and a base for mounting the first and the second flexible substrates so that the conductive traces of the image sensor and the velocity sensor are substantially coplanar. - View Dependent Claims (31)
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Specification