Elevator button
The utility model discloses an elevator button. A touch display screen covers an ultrasonic fingerprint identification sensor; the upper surface of the ultrasonic fingerprint identification sensor isparallel to the upper surface of the touch display screen; the ultrasonic fingerprint identification...
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| Hauptverfasser: | , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses an elevator button. A touch display screen covers an ultrasonic fingerprint identification sensor; the upper surface of the ultrasonic fingerprint identification sensor isparallel to the upper surface of the touch display screen; the ultrasonic fingerprint identification sensor outputs a fingerprint electric signal of each group of identification points according to the time difference between the ultrasonic wave emitted by the ultrasonic emitter in each group of identification points and the ultrasonic wave received by the corresponding ultrasonic receiver; when the touch display screen is touched by a finger, the touch display screen sends a trigger signal to the ultrasonic fingerprint identification sensor; and when the ultrasonic fingerprint identificationsensor receives the trigger signal, each group of identification points of the ultrasonic fingerprint identification sensor emit ultrasonic waves towards the direction of the touch display screen. Theelevator button provided b |
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