Brands Quality 4 Wire Resistive Touch Screen Panel Company Price

2019-08-12

4 Wire Resistive Touch Screen Panel

Four-wire touch screen is almost the most basic production specification for touch screen practitioners due to its cost and mature technical level. First, in terms of resistive touch screen technology, four-wire touch screens account for more than 50% of the market. It mainly consists of a piece of ITOFilm conductive Film and a piece of indium tin oxide conductive Glass ITO Glass, ITOFilm and ITO Glass after conducting electricity, all use a voltage of +5V (some manufacturers use a voltage different from that of +5V). However, in the middle part of the two layers of conductive bodies, ITO Film and ITO Glass are separated by Spacer, with the purpose of avoiding the short-circuit caused by no touch and causing misoperation.


Brands 4 Wire Resistive Touch Panel

The main working principle of four-wire touch screen is to regard the lower part and upper part as Y axis and X axis coordinates. Two conducting circuits are added to the edges around ITO Film and ITO Glasss. At the same time, a fixed voltage is set at both ends to make it a uniform electric field.


Quality 4 Wire Resistive Touch Screen

Because there is Dot Spacer between the upper and lower parts, the upper and lower layers are insulated. If you use the pen, finger or other medium panel to touch pressure, it will make the upper and lower two layers of contact resulting in a short circuit, the production of buck.


4 Wire Resistive Touch Screen Panel Company

The main composition mode of the five-wire type is basically the same as that of the four-wire type. ITO Film and ITO Glass are divided into two layers of electric conductivity, and the voltage of +5V is still applied after the conduction. And Spacer is in the middle to separate the two layers. The biggest difference between them is that the upper and lower layers of the four-wire model control two conductive lines on the X and Y axes respectively. In the five-wire scheme, the lower conductive layer controls the X-axis and Y-axis four lines.


4 Wire Resistive Touch Screen Price

The upper layer is responsible for measuring the voltage of the X-axis and Y-axis, which will be transmitted to the controller to obtain the coordinates, and then the digital signal will be transmitted to the host after conversion. Because the upper layer is a uniform electrical conductivity, so any point can be responsible for the transmission of voltage work, compared with the four-wire touch screen, five-wire one in a slightly harsh environment can also maintain a consistent accuracy and sensitivity.


Strict eight wire touch screen is the extension product of 4 wired one,it is designed to avoid the influence of the environment or other peripheral devices which lead to voltage error. In addition to the upper and lower conductive layer, 4 reference wires are added, the purpose is to be able to read more practical voltage value by raising the accuracy of the operation.


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