Front Screen Glass Lens For IphoneX11pro with oca

                                                                                       What is a resistive touch screen

This touchscreen uses pressure sensitivity for control. The main part of the resistive touch screen is a resistive film screen that is very compatible with the display surface. This is a multi-layer composite film. Resistor) conductive layer, covered with a hardened outer surface, smooth and scratch-resistant plastic layer, its inner surface is also coated with a layer of coating, and there are many small (less than 1/1000 inch) transparent between them The isolation point separates and insulates the two conductive layers.

     When a finger touches the screen, the two conductive layers are in contact at the touch point, the resistance changes, and signals are generated in the X and Y directions, and then sent to the touch screen controller. The controller detects this contact and calculates the (X,Y) position, which then behaves like a simulated mouse. This is the most basic principle of resistive technology touch screen.
  A. ITO, indium oxide, is a weak conductor. Its characteristic is that when the thickness drops below 1800 angstroms (angstroms = 10-10 meters), it will suddenly become transparent, and the light transmittance is 80%. If it is thinner, the light transmittance will be reversed. Decrease, and rise to 80% at 300 Angstrom thickness. ITO is the main material used in all resistive technology touch screens and capacitive technology touch screens. In fact, the working surface of resistive and capacitive technology touch screens is ITO coating.
B. Nickel-gold coating. The outer conductive layer of the five-wire resistive touch screen uses nickel-gold coating material with good ductility. Due to frequent touches, the outer conductive layer uses nickel-gold material with good ductility to prolong the service life. , but the process cost is relatively high. Although the nickel-gold conductive layer has good ductility, it can only be used as a transparent conductor. It is not suitable as a working surface of a resistive touch screen because of its high conductivity and the metal is not easy to achieve a very uniform thickness. It is not suitable for a voltage distribution layer and can only be used as a probe. Floor.