60 inch touch screen displays.The four corners of this touch screen are respectively equipped with vertical or horizontal ultrasonic transmitting and receiving transducers, and reflection stripes are also engraved on the four sides to emit ultrasonic signals like reference waveforms. When a finger touches the screen, it will absorb part of the sound wave energy, and the controller calculates the position of the touch point based on the weakened signal. The advantage of this touch screen is that the surface acoustic wave itself has a fast sensing speed, and each place on the screen can accept multiple touches, which is very durable. The disadvantage is that the induction transducer of the surface induction system will be damaged due to the pressure generated by the sound energy under long-term operation. Generally wool or leather gloves will receive some sound waves, which will also affect the accuracy of induction. If the screen surface is scratched, it will affect the sound wave activity, leading to uneven sound waves, which will have a certain impact on the accuracy of the sensing, and if the screen surface or the fingers touching the screen are stained with water, oil, dirt or dust, Will affect its performance and even stop the system. From the perspective of market applications, resistive touch screens are easier to adopt for product (especially consumer electronics) designers.

60 inch touch screen displays.The four corners of this touch screen are respectively equipped with vertical or horizontal ultrasonic transmitting and receiving transducers, and reflection stripes are also engraved on the four sides to emit ultrasonic signals like reference waveforms. When a finger touches the screen, it will absorb part of the sound wave energy, and the controller calculates the position of the touch point based on the weakened signal. The advantage of this touch screen is that the surface acoustic wave itself has a fast sensing speed, and each place on the screen can accept multiple touches, which is very durable. The disadvantage is that the induction transducer of the surface induction system will be damaged due to the pressure generated by the sound energy under long-term operation. Generally wool or leather gloves will receive some sound waves, which will also affect the accuracy of induction. If the screen surface is scratched, it will affect the sound wave activity, leading to uneven sound waves, which will have a certain impact on the accuracy of the sensing, and if the screen surface or the fingers touching the screen are stained with water, oil, dirt or dust, Will affect its performance and even stop the system. From the perspective of market applications, resistive touch screens are easier to adopt for product (especially consumer electronics) designers. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.