If the installation is separate for display and touch, the main factor should be considered is the gap between the capacitive touch screen and the display. it is better to control it within gap between 0.5 to 2mm because if it is less than 0. 5mm when the display screen is working, the radiation interference will become larger, which may interfere with the capacitive screen, and also when the gap is too close, If the capacitive screen itself is not strong enough, the deformation of the press may appear after contacting the display screen, which might result in water ripples or Newton ring. However If the gap is higher than 2mm, our eyes will feel the visual deviation between touch and display, the touch feeling will be greatly affected, and with the gap being too large, it is easy to be affected by external dust if the sealing is not particularly good.
