7 inch capacitive touch screen hdmi
7 inch capacitive touch screen hdmi can be apply to many current smartphones, tablets and other mobile devices, including Androidphones and Microsoft Surface, as well as Apple’s iPhone, iPad and iPod Touch.
Cover Glass Dimension
Cover Lens VA
Interface of CTP
How do the touch screen work?
When a capacitive panel is touched, a small amount of charge is drawn to the point of contact, which becomes a functional capacitor. The change in the electrostatic field is measured to find the location. In some designs, circuits located at each corner of the panel measure the charge and send the information to the controller for processing. In multi-touchscreens, sensors are arranged in a grid to enable more complex input.
Input to resistive touch screens works through pressure resulting in two conductive layers being pressed together. In comparison, capacitive touch screens are not affected by outside elements, have high clarity and allow for easier functioning with lighter contact and greater accuracy.