The difference between capacitive touch screen and tradition
2023-05-10 15:34
Capacitive touch screens are widely used in touch display products, so what is the difference between capacitive touch screens and traditional touch screens?
Touch screen manufacturers said that in fact, the implementation principles of touch screens are roughly the same, both of which add a transparent touch panel to an ordinary LCD screen. The types we call resistive and capacitive are divided according to their different working principles. At present, there are four main types of touch screens: resistive, capacitive, infrared, and surface acoustic wave. Capacitive touch screens have replaced resistive touch screens and become a trend.
Touch screen manufacturers said that capacitive touch screens are very different from traditional resistive touch screens. Resistive touch screens can only judge one touch point at a time when working. If there are more than two touch points, it cannot make a correct judgment. Therefore, resistive touch screens are only suitable for judging some simple actions such as clicking and dragging. The multi-touch of capacitive touch screens can decompose the user's touch into two tasks: collecting multi-point signals and judging the meaning of signals, and complete the judgment of complex actions. Using two fingers to stretch and transpose can complete interesting operations such as zooming in and rotating on the screen, which was almost unimaginable before the advent of capacitive touch screens. After the launch of the iPhone, it quickly created a touch-screen trend; soon after, Apple took advantage of the situation and launched the iPod touch (which was actually just a simplified version of the iPhone), which also supported multi-touch and was also well received by users and the media.