Ultrasonic fingerprint recognition circuit, display panel, display device and driving method

A display panel, comprising:

• an ultrasonic fingerprint recognition circuit, wherein ultrasonic fingerprint recognition circuit comprises:
• an ultrasonic fingerprint recognizer, a sampling signal device, an acquisition device, a storage device, and a reading device;
• wherein
• a first end of the ultrasonic fingerprint recognizer is electrically connected to an ultrasonic signal input end of the ultrasonic fingerprint recognition circuit, and a second end of the ultrasonic fingerprint recognizer is electrically connected to a first end of the acquisition device;
• a control end of the sampling signal device is electrically connected to a sampling control end of the ultrasonic fingerprint recognition circuit, a first end of the sampling signal device is electrically connected to a first sampling signal end of the ultrasonic fingerprint recognition circuit, a second end of the sampling signal device is electrically connected to a second sampling signal end of the ultrasonic fingerprint recognition circuit, and a third end of the sampling signal device is electrically connected to a control end of the acquisition device;
• a second end of the acquisition device is electrically connected to a bias voltage end of the ultrasonic fingerprint recognition circuit;
• a first end of the storage device is electrically connected to the second end of the ultrasonic fingerprint recognizer, and a second end of the storage device is electrically connected to a power signal end of the ultrasonic fingerprint recognition circuit;
• and
• a first control end of the reading device is electrically connected to the second end of the ultrasonic fingerprint recognizer, a second control end of the reading device is electrically connected to a scan signal input end of the ultrasonic fingerprint recognition circuit, a first end of the reading device is electrically connected to the power signal end of the ultrasonic fingerprint recognition circuit, and a second end of the reading device is electrically connected to a data signal end of the ultrasonic fingerprint recognition circuit.

A display device, comprises:

• a display panel, wherein the display panel comprises an ultrasonic fingerprint recognition circuit;
• wherein the ultrasonic fingerprint recognition circuit, comprises:
• an ultrasonic fingerprint recognizer, a sampling signal device, an acquisition device, a storage device, and a reading device;
• wherein
• a first end of the ultrasonic fingerprint recognizer is electrically connected to an ultrasonic signal input end of the ultrasonic fingerprint recognition circuit, and a second end of the ultrasonic fingerprint recognizer is electrically connected to a first end of the acquisition device;
• a control end of the sampling signal device is electrically connected to a sampling control end of the ultrasonic fingerprint recognition circuit, a first end of the sampling signal device is electrically connected to a first sampling signal end of the ultrasonic fingerprint recognition circuit, a second end of the sampling signal device is electrically connected to a second sampling signal end of the ultrasonic fingerprint recognition circuit, and a third end of the sampling signal device is electrically connected to a control end of the acquisition device;
• a second end of the acquisition device is electrically connected to a bias voltage end of the ultrasonic fingerprint recognition circuit;
• a first end of the storage device is electrically connected to the second end of the ultrasonic fingerprint recognizer, and a second end of the storage device is electrically connected to a power signal end of the ultrasonic fingerprint recognition circuit;
• and
• a first control end of the reading device is electrically connected to the second end of the ultrasonic fingerprint recognizer, a second control end of the reading device is electrically connected to a scan signal input end of the ultrasonic fingerprint recognition circuit, a first end of the reading device is electrically connected to the power signal end of the ultrasonic fingerprint recognition circuit, and a second end of the reading device is electrically connected to a data signal end of the ultrasonic fingerprint recognition circuit.