Touch control device, electronic apparatus and control method of electronic apparatus

An electronic apparatus, comprising a touch control device which comprises:

• a plurality of transceivers disposed in an array and configured to transmit ultrasonic waves and to receive ultrasonic waves that are reflected back, wherein directions in which the plurality of transceivers transmit the ultrasonic waves are parallel to one another;
• and
• a processor connected to each of the transceivers and configured to determine a touch control signal in accordance with at least one of a time difference between a time at which each of the transceivers transmits the ultrasonic waves and a time at which each of the transceivers receives the ultrasonic waves and an intensity difference between the transmitted and received ultrasonic waves, and to control the electronic apparatus in accordance with the touch control signal, wherein the touch control signal comprises at least one of an operation instruction and user fingerprint information,
• wherein each of the transceivers comprises an ultrasonic transducer, a transfer component configured to transfer the ultrasonic waves, and bonding adhesive, and the transfer component is disposed on the side, which transmits the ultrasonic waves, of the ultrasonic transducer through the bonding adhesive,
• wherein the transfer component is silica-based ceramic of which the bottom is secured to a surface of the ultrasonic transducer, a groove for transferring the ultrasonic waves is formed on the top of the silica-based ceramic, and a depth direction of the groove is the same as a transmitting direction of the ultrasonic waves, and
• wherein each of the transceivers further comprises a key and conductive rubber that is disposed in the groove of the silica-based ceramic, an expansion direction of the conductive rubber is the same as the transmitting direction of the ultrasonic waves, and the key is secured to the end, away from the bottom of the silica-based ceramic, of the conductive rubber.