FINGERPRINT SENSORS
First Claim
1. A sensor for detecting one or more fingerprints comprising:
- a first substrate and a second substrate;
a two-dimensional array of sensing elements formed at pixel locations on said first substrate; and
a plurality of thin-film transistors for controlling said sensing elements at each of said pixel locations, wherein each of said sensing elements detects one of electrical signals, temperature, or light via one of said first substrate or said second substrate representative of one or more fingerprints.
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Accused Products
Abstract
A sensor for detecting fingerprints is provided having first and second substrates, a two-dimensional array of sensing elements formed on the first substrate, and a plurality of thin-film transistors or TFTs for controlling the sensing elements at pixel location along the array. Each of the sensing elements detects one of electrical signals (e.g., capacitance, resistance, or impedance), temperature, or light via one of the first or second substrates representative of one or more fingerprints. The top of the second substrate or the bottom of the first substrate may provide a platen upon which one or more fingers can be disposed. The sensor may be utilized in a fingerprint scanner having one or more processors driving sensing elements or reading from sensing elements analog signals representative of one or more fingerprints, and generating an image representative of the one or more fingerprints from the analog signals.
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Citations
32 Claims
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1. A sensor for detecting one or more fingerprints comprising:
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a first substrate and a second substrate; a two-dimensional array of sensing elements formed at pixel locations on said first substrate; and a plurality of thin-film transistors for controlling said sensing elements at each of said pixel locations, wherein each of said sensing elements detects one of electrical signals, temperature, or light via one of said first substrate or said second substrate representative of one or more fingerprints. - 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, 24, 25, 26, 27)
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28. A method for detecting one or more fingerprints comprising:
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providing a two-dimensional array of sensing elements at pixel locations on said first substrate, in which each of said sensing elements detects one of electrical signals, temperature, or light via one of said first substrate or a second substrate facing said first surface representative of one or more fingerprints; and a plurality of thin-film transistors for controlling said sensing elements at each of said pixel locations.
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29. A system for detecting one or more fingerprints comprising:
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a first substrate and a second substrate; a two-dimensional array of sensing elements formed at pixel locations on said first substrate; a plurality of thin-film transistors for controlling said sensing elements at each of said pixel locations, wherein each of said sensing elements detects one of electrical signals, temperature, or light via one of said first substrate or said second substrate representative of one or more fingerprints; and one or more processors, each of said thin-film transistors controls said one or more of said sensing elements responsive to said one or more processors to enable said one or more processor to one or more of driving said one or more of said sensing elements or reading from said one or more sensing elements analog signals representative of one or more fingerprints, and generates an image representative of said one or more fingerprints responsive to said analog signals. - View Dependent Claims (30)
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31. A device for capturing an image of an object comprising:
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a first substrate and a second substrate; a two dimensional array of photoreceptors and TFTs in which each photoreceptor is controlled by one of said TFTs, in which one of said first and second substrates provides a platen surface for capturing an image of an object when disposed upon said platen surface and illumination is provide from within said first and second substrates or below said first and second substrates to enable reflected light representing said object to be captured onto said two dimensional array of photoreceptors. - View Dependent Claims (32)
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Specification