Mobile Phone LCD Screen Quality Control Expert

touch screen

by:Kimeery     2021-08-20
With the development of science and technology, the LCD industry is also constantly advancing. Our mobile phones have moved from buttons and pen touches to finger touches. Touch screens are added to the surface of the LCD LCD screento function as a touch display. The touch screen uses human body current induction to work. Touch screens are divided into capacitive touch screens and resistive touch screens. Capacitive touch screens are used directly with fingers, such as mobile phones; resistive touch screens must be directly touched with a stylus, and a certain amount of pressure is required, because it works by making the upper and lower layers of ITO current sense through pressure. We are now using more capacitive touch screens, because: 1. Capacitive touch screens only need touch, not pressure to generate signals. 2. The capacitive touch screen only needs one time or no calibration at all after production, while the resistance technology requires regular calibration. 3. Capacitive screens have a long use time, because the components in the capacitive LCD screen do not need any movement; in the resistive LCD screen, the upper ITO film needs to be thin enough to be flexible, so that it can bend downward to contact the lower ITO film. 4. Capacitance technology is superior to resistance technology in terms of light loss and system power consumption. 5. Capacitive technology is wear-resistant, long life, and low maintenance cost when used by users. However, capacitive screens also have certain shortcomings. When the ambient temperature and humidity change, and there is magnetic field interference in the environment, it will cause the capacitive screen to drift and cause the touch to fail. Resistive screens are better than touch screens in terms of anti-interference performance, and the price cost is lower than that of capacitive screens. The choice of capacitive screen or resistive screen depends on how the screen is used and the environment. If it is used with a finger touch, not in a multiple magnetic field environment, a capacitive LCD screen is a better choice. If you need to use brush strokes, and the anti-interference requirements are high, in this case, it is better to use a resistive touch screen.
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