How a capacitive touchscreen worksHow a capacitive touchscreen works In this case, the glass surface of the monitor is covered with a conductive layer, which usually consists of indium tin oxide (ITO). At very low levels, this material is transparent. This layer is connected to electrodes located on the edges of the monitor. In this way, a uniform electric field is created on the surface of the monitor. Or to put it another way: the surface is evenly charged.
When a finger approaches this electric field, some of the charge transfers to the finger. This disturbance is then perceived by the monitor control. In the first capacitive touchscreens, the ITO layer was attached to the outside. It therefore wore out quickly, which limited the lifespan of the product. Nowadays, touch detection algorithms are so advanced that a greater distance between the ITO layer and the finger is possible. The surface of the monitor now only consists of simple glass. So wear and tear is no longer an issue. The main advantage of capacitive touchscreens is the significantly reduced brightness of the monitor. The low thickness of the conductive layer ensures high transparency (over 90%). They also offer excellent resolution. And the control module is particularly compact. However, they are still significantly more expensive than resistive touchscreens.Item condition: Used, is in good optical condition. In this case, the glass surface of the monitor is covered with a conductive layer, which usually consists of indium tin oxide (ITO). Nowadays, touch detection algorithms are so advanced that a greater distance between the ITO layer an.