First of all, we must understand the structure and principle of capacitive touch screen, and then find the reasons for the anti-jamming of capacitive touch screen. What are the general effects? The anti-jamming problems of capacitive touch screen are as follows: screen jumping, slow response, inaccurate touch control, or complete failure. So first determine whether there is the influence of external factors, such as the power supply is not timely, the signal is weak, the antenna signal is not strong, whether there is electromagnetic activity around, these are common, only need to detect whether there are the above phenomenon, adjustment can be.
In order to solve the anti-interference problem in the design of capacitive touch screen, the following adjustments should be made: firstly, add virtual wiring in the blank area on the touch screen panel, that is, fill wiring outside the display area, and make the added virtual wiring connect with each other internally to form a virtual line; Secondly, the virtual circuit is connected with the ground part of the touch chip to form a shielding circuit. This design eliminates the interference caused by temperature, humidity, environmental electric field, reflection and other factors on the capacitive touch screen, and low cost, high efficiency.