Display substrate, preparation method thereof, and display apparatus

A display apparatus, comprising:

• a display substrate, which comprises a substrate, an array structure layer disposed on the substrate, a plurality of emitting units and a plurality of ultrasonic transducers disposed at intervals on a side of the array structure layer away from the substrate, wherein the ultrasonic transducers are disposed between adjacent emitting units, and the array structure layer comprises a transducer drive circuit connected to the ultrasonic transducers, and the transducer drive circuit is configured to control the ultrasonic transducers to transmit ultrasonic waves and receive voltage signals generated by the ultrasonic transducer receiving ultrasonic echoes;
• further comprising:
• a host, a gesture capture module, a haptic feedback module and a display drive module connected to the host, wherein the display substrate comprises a transducer drive circuit connected to an ultrasonic sensor and a pixel drive circuit connected to an emitting element, and a first power terminal and a second power terminal of the transducer drive circuit are connected to the haptic feedback module;
• a first receiving terminal and a second receiving terminal of the transducer drive circuit are connected to the gesture capture module;
• the pixel drive circuit is connected to the display drive module;
• the display drive module is configured to control the emitting elements of the display substrate to display pictures through the pixel drive circuit, and the gesture capture module is used to capture voltage signals generated by the ultrasonic transducers of the display substrate receiving ultrasonic echoes, generate gesture coordinates and feed back to the host the host is configured to analyze image object attributes corresponding to gesture coordinates, calculate each force focus point parameter and transmit the parameter to the haptic feedback module, and the haptic feedback module is configured to control the ultrasonic transducers to generate acoustic focus points at positions of the gesture coordinates through the transducer drive circuit.