LCD touch screen display working principle

The working part of LCD touch screen display is generally composed of three parts: there are two layers of transparent resistance conductor layer, the isolation layer between the two layers of conductor and electrode.  Resistive conductor layers are typically made of resistive materials, such as indium tin oxide plated on a substrate, plastic on the upper substrate and glass on the lower substrate.  A spacer is a viscous insulating liquid material, such as a polyester film.  The conductivity of the electrode is about 1000 times that of ITO.  

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