Depth analysis of resistive touch screen works TFT Display Module

The use of pressure-sensitive resistive touch screen control. A main part of the resistive touch screen resistive films screen is a very complex piece with the display surface, which is a multi-layered composite film as primary layer of glass or hard plastic plate, the surface coated with a layer of transparent metal oxide (transparent conductive resistance) of the conductive layer, above and then cover with a layer of outer surface hardening treatment, smooth plastic layer anti-rub, and its inner surface is also coated with a layer of coating, between them, have many of the small (less than 1/1000 inch) transparent The isolation point the two conductive layers separated by insulation.TFT LCD Module
Resistive touch screen technology, the basic principle: when a finger touches the screen, the two conductive layers in the touch point position, there is a contact resistance changes in the two directions of X and Y signal is generated, and then sent to the touch screen controller. Control detects this contact, and to calculate the position (X, Y), according to the operation of the simulated mouse.
Resistance class touch screen key material, commonly used transparent conductive coating material:
A, ITO, indium oxide, a weakly conductive body, characteristics when the thickness is reduced to 1800 angstroms (Å = 10-10 m) or less, will suddenly become transparent, the light transmittance was 80%, and then thin down light transmittance but The rise again decreased to a thickness of 300 angstroms to 80%. ITO is all resistive touch screen technology and capacitive touch screen technology are the main materials used, in fact, the resistive and capacitive touch screen technology Face ITO coating.Character LCD Modules
Nickel gold coating, five-wire resistive touch screen of the outer conductive layer is good ductility nickel deposit coating materials, conductive outer layer due to frequent touch, use a good ductility nickel deposit materials in order to extend the life of , but the technology costs more expensive. Nickel deposit conductive layer scalability, but only for transparent conductors, not suitable as the face of the resistive touch screen, because of its high conductivity, and the metal is not easy to do very uniform thickness, suitable for voltage distribution layer, and only as a probe layer.