interactive touch screen india.Of course, it is not comparable to surface acoustic wave screens. Capacitive screens have serious reflections. In addition, the four-layer composite touch screen of capacitive technology has non-uniform transmittance of light at various wavelengths, and there is a problem of color distortion. Due to the reflection of light between the layers, the image characters are blurred. The capacitive screen uses the human body as an electrode of a capacitor element in principle. When a conductor is close to the sandwich ITO working surface and a sufficient amount of capacitance is coupled, the flowing current is sufficient to cause the capacitive screen to malfunction. . We know that although the capacitance value is inversely proportional to the distance between the poles, it is proportional to the relative area, and it is also related to the dielectric coefficient of the dielectric. Therefore, when a large area of ??the palm or a hand-held conductor approaches the capacitive screen instead of touching it, it can cause the capacitive screen to malfunction. The more important disadvantage of the capacitive screen is drift: when the ambient temperature and humidity change, the environmental electric field changes Will cause the capacitive screen to drift and cause inaccuracies. Because there is no origin, the drift of the capacitive screen is cumulative, and calibration is often required at the work site. The outermost silicon protective glass of the capacitive touch screen has good scratch resistance. However, it is afraid that a small hole will hurt the sandwich ITO if it is struck by nails or hard objects. Whether it is the sandwich ITO or the damage during installation and transportation, The inner surface of the IT o layer, the capacitive screen can not work properly.

interactive touch screen india.Of course, it is not comparable to surface acoustic wave screens. Capacitive screens have serious reflections. In addition, the four-layer composite touch screen of capacitive technology has non-uniform transmittance of light at various wavelengths, and there is a problem of color distortion. Due to the reflection of light between the layers, the image characters are blurred. The capacitive screen uses the human body as an electrode of a capacitor element in principle. When a conductor is close to the sandwich ITO working surface and a sufficient amount of capacitance is coupled, the flowing current is sufficient to cause the capacitive screen to malfunction. . We know that although the capacitance value is inversely proportional to the distance between the poles, it is proportional to the relative area, and it is also related to the dielectric coefficient of the dielectric. Therefore, when a large area of ??the palm or a hand-held conductor approaches the capacitive screen instead of touching it, it can cause the capacitive screen to malfunction. The more important disadvantage of the capacitive screen is drift: when the ambient temperature and humidity change, the environmental electric field changes Will cause the capacitive screen to drift and cause inaccuracies. Because there is no origin, the drift of the capacitive screen is cumulative, and calibration is often required at the work site. The outermost silicon protective glass of the capacitive touch screen has good scratch resistance. However, it is afraid that a small hole will hurt the sandwich ITO if it is struck by nails or hard objects. Whether it is the sandwich ITO or the damage during installation and transportation, The inner surface of the IT o layer, the capacitive screen can not work properly. 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.