ULTRASONIC FINGERPRINT DETECTION DEVICE AND ELECTRONIC DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Dec 12, 2024
filing date -
Dec 12, 2024
priority date (Note) -
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Abstract
An ultrasonic fingerprint detection device and an electronic device are provided, which can reduce the size, circuit complexity and cost of the ultrasonic fingerprint detection device. The ultrasonic fingerprint detection device includes: a signal generation circuit and an ultrasonic fingerprint sensor chip, where the signal generation circuit is composed of discrete devices and the signal generation circuit includes: a control circuit and a resonant circuit, the control circuit is configured to receive a control signal provided by the ultrasonic fingerprint sensor chip and generate an excitation signal under the action of the control signal, and the resonant circuit is configured to receive the excitation signal and form a drive signal under the action of the excitation signal; and the ultrasonic fingerprint sensor chip is configured to receive the drive signal, and generate an ultrasonic signal for fingerprint detection under the action of the drive signal.
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