1results about How to "Piezoelectric constant" patented technology

The application provides an ultrasonic transducer, a preparation method thereof and an electronic device. The preparation method of the ultrasonic transducer comprises the following steps: coating a piezoelectric polymer solution on a first electrode, drying under the condition that the relative humidity is less than 30%, and forming a piezoelectric film; sequentially performing crystallization and polarization on the piezoelectric film, and forming a piezoelectric layer; and forming a second electrode on the piezoelectric layer, so as to obtain the ultrasonic transducer. Through the preparation process, the transparency and piezoelectric constant of the formed piezoelectric layer can be improved, and the performance of the ultrasonic transducer is optimized.