Front Screen Glass Lens For IphoneX14pro with OCA

                                                     Which is more advantageous, resistive touch screen or capacitive touch screen

Capacitive touch screens and resistive touch screens of touch screen mobile phones are mainly different in touch sensitivity, precision, cost, multi-touch feasibility, damage resistance, cleaning, and visible effects under sunlight.

Touch sensitivity, 1. Resistive touch screen: it is necessary to use pressure to make contact between the layers of the screen, and you can use fingers (even with gloves), fingernails, stylus, etc. to operate. Supporting the stylus is very important in the Asian market, where gestures and text recognition are valued. 2. Capacitive touch screen: The slightest touch from a charged finger surface can also activate the capacitive sensing system below the screen. Inanimate objects, nails, gloves are void. handwriting recognition is difficult
Accuracy, 1. Resistive touch screen: The accuracy reaches at least a single display pixel, which can be seen when using a stylus. Facilitates handwriting recognition and facilitates navigating the interface using small control elements. 2. Capacitive touch screen: The theoretical accuracy can reach several pixels, but in fact it will be limited by the finger contact area. So that it is difficult for the user to accurately click on a target smaller than 1cm2.

Cost, 1. Resistive touch screen: very cheap. 2. Capacitive touch screen: Capacitive touch screens from different manufacturers are 10% to 50% more expensive than resistive touch screens. That extra cost doesn't matter for flagships, but it could be prohibitive for a mid-priced phone.

Multi-touch feasibility, 1. Resistive touch screen: Impossible, unless the resistive screen is reorganized and connected to the circuit of the machine. 2. Capacitive touch screen: It depends on the implementation method and software, and has been implemented in the technical demonstration of G1 and iPhone. The 1.7T version of G1 can already realize the multi-touch feature of the browser.

Damage resistance, 1. Resistive touch screen: The fundamental characteristics of a resistive screen determine that its top is soft and needs to be able to be pressed down. This makes the screen very prone to scratches. Resistive screens require a protective film and relatively more frequent calibration. On the plus side, resistive touchscreen devices that use a plastic layer are generally less fragile and less likely to break. 2. Capacitive touch screen: the outer layer can use glass. That's not indestructible and has the potential to shatter under severe impact, but the glass handles everyday bumps and smudges better.

Cleaning, 1. Resistive touch screen: Since it can be operated with a stylus or fingernails, it is less likely to leave fingerprints, oil stains and bacteria on the screen. 2. Capacitive touch screen: use the whole finger to touch, but the outer layer of glass is easier to clean.

Environmental adaptability, 1. Resistive touch screen: The specific value is unknown. But there is evidence that the Nokia 5800 with a resistive screen can function in temperatures ranging from -15°C to +45°C, with no requirements for humidity. 2. Capacitive touch screen: The typical operating temperature is between 0° and 35°, and requires at least 5% humidity (limited by working principle).

Visibility in sunlight, 1. Resistive touch screens: Usually bad, the extra screen layer reflects a lot of sunlight. 2. The capacitive touch screen uses the current induction of the human body to work. The capacitive touch screen is a four-layer composite glass screen. The inner surface and the interlayer of the glass screen are coated with a layer of ITO (coated conductive glass), the outermost layer is a thin layer of silica glass protective layer, and the ITO coating is used as the working surface. , four electrodes are drawn from the four corners, and the inner layer of ITO is a shielding layer to ensure a good working environment.

When a finger touches the metal layer, the electric field of the human body, the user and the surface of the touch screen form a coupling capacitor. For high-frequency currents, the capacitor is a direct conductor, so the finger absorbs a small current from the contact point. This current flows out of the electrodes on the four corners of the touch screen respectively, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller obtains the touch point by accurately calculating the four current ratios. location information.

Now, more capacitive screens are used because of its precise points and easier support for multi-touch. But at the same time, it is also relatively delicate, so it needs to be cherished and maintained by everyone.