Front Screen Glass lens for iphone 13promax

                                                                                      Touch Screen Performance Comparison
     The resistive touch screen works in an environment completely isolated from the outside world. It is not afraid of dust, water vapor and oil, and can be touched by any object. It is more suitable for use in the field of industrial control. The disadvantage is that because the outer layer of the composite film is made of plastic, it may scratch the touch screen if you touch it too hard or use a sharp object.
     Capacitive touch screens have high resolution and good light transmittance, which can well meet the requirements of various aspects. This kind of touch screen is common in public places. However, the capacitive touch screen uses the human body as an electrode of the capacitor. When a conductor approaches and couples a large enough capacitance with the interlayer ITO working surface, the flowing current will cause the capacitive touch screen to malfunction; in addition , There will be no response when wearing gloves or holding an insulating object, because the insulating medium is added.

     The infrared touch screen determines the touch position by measuring the on and off of infrared rays, which has nothing to do with the material of the transparent baffle selected by the touch screen (some do not use any baffle at all). Therefore, a good visual effect can be obtained by choosing a baffle with good light transmission performance and anti-reflection treatment. However, limited by the volume of the infrared emitting tube, it is impossible to emit high-density infrared rays, so the resolution of this touch screen is not high. In addition, since the infrared touch screen relies on infrared sensing to work, changes in external light, such as sunlight or indoor lights, will affect its accuracy.
     The surface acoustic wave technology is very stable, and the controller of the surface acoustic wave touch screen calculates the touch position by measuring the position of the decay moment on the time axis, so its accuracy is very high. The surface acoustic wave touch screen also has a third axis (z-axis), that is, the pressure axis-by calculating the attenuation of the received signal attenuation, the force of the user touching the screen can be obtained, which can be divided into 256 levels of force at most. The greater the force, the wider and deeper the attenuation gap on the received signal waveform. Among all touch screens, only the surface acoustic wave touch screen has the performance of sensing touch pressure.