Touch control device and electronic equipment for underwater operation

Abstract

This application discloses a touch device and an electronic device for underwater operation. The touch device includes a capacitor layer module, an ultrasonic sensing layer module, and a main control chip. The ultrasonic sensing layer module is attached to the non-touch detection surface of the capacitor layer module. The main control chip is connected to the capacitor layer module and the ultrasonic sensing layer module. The capacitor layer module is used to acquire capacitance detection signals. The ultrasonic sensing layer module is used to acquire ultrasonic detection signals. The main control chip is used to enable the capacitor layer module and / or the ultrasonic sensing layer module according to the touch mode, and to acquire the touch position of the touch device according to the capacitance detection signals and / or the ultrasonic detection signals.

Claims

1. A touch device, improved in that it includes a capacitor layer module, an ultrasonic sensing layer module, and a main control chip, wherein the ultrasonic sensing layer module is attached to a non-touch detection surface of the capacitor layer module, and the main control chip is connected to the capacitor layer module and the ultrasonic sensing layer module; the capacitor layer module is used to acquire a capacitance detection signal; the ultrasonic sensing layer module is used to acquire an ultrasonic detection signal; the main control chip is used to enable the capacitor layer module and / or the ultrasonic sensing layer module according to a touch mode, and to acquire the touch position of the touch device according to the capacitance detection signal and / or the ultrasonic detection signal.

2. The touch device as described in claim 1, wherein, The ultrasonic sensing layer module includes a receiving electrode layer, a piezoelectric layer, and a transmitting electrode layer. The receiving electrode layer is bonded to the capacitor layer module, the piezoelectric layer is bonded to the receiving electrode layer, and the transmitting electrode layer is bonded to the piezoelectric layer. The transmitting electrode layer is used to transmit an excitation signal to cause the piezoelectric layer to generate an ultrasonic signal. The piezoelectric layer is used to receive the echo signal corresponding to the ultrasonic signal and convert the echo signal into an electrical signal. The receiving electrode layer is used to receive the electrical signal and use the electrical signal as the ultrasonic detection signal.

3. The touch device as described in claim 2, wherein, The transmitting electrode layer includes multiple parallel ultrasonic transmitting electrodes, each of which is used to transmit the excitation signal; the receiving electrode layer includes multiple parallel ultrasonic receiving electrodes, which are used to receive the electrical signal and convert the electrical signal into the ultrasonic detection signal; the ultrasonic transmitting electrodes and the ultrasonic receiving electrodes are arranged crosswise.

4. The touch device as described in claim 3, wherein, The transmitting electrode layer further includes a transmitting layer substrate made of a non-conductive material, on which the ultrasonic transmitting electrode made of a conductive material is grown; the receiving electrode layer further includes a receiving layer substrate made of the non-conductive material, on which the ultrasonic receiving electrode made of the conductive material is grown.

5. The touch device as described in claim 4, wherein, A transmission channel switch is provided between adjacent ultrasonic transmitting electrodes, and a receiving channel switch is provided between adjacent ultrasonic receiving electrodes. The main control chip is connected to each of the transmission channel switches and the receiving channel switches. The main control chip is also used to control the connection and disconnection of the transmission channel switches and / or the receiving channel switches according to a touch application, so as to control the density and spacing of the signal transmission channels and / or control the density and spacing of the signal receiving channels.

6. The touch device as described in claim 2, wherein, The piezoelectric layer is laid across the entire surface, covering both the receiving electrode layer and the transmitting electrode layer.

7. The touch device as described in claim 2, wherein, The piezoelectric layer is composed of a piezoelectric polymer.

8. The touch device as described in claim 2, wherein, The main control chip is also used to extract fingerprint information from the ultrasonic detection signal, and the fingerprint information is used to unlock the touch device.

9. The touch device as described in claim 1, wherein, The touch detection surface of the ultrasonic sensing layer module covers the display area of ​​the display panel of the touch device, and the area of ​​the touch detection surface of the ultrasonic sensing layer module is the same as the area of ​​the display area.

10. An electronic device for underwater operations, improved in that it includes a touch device as described in any one of claims 1 to 9.

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