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Hui Huang: Four line / five wire resistive touch screen works

The two layer of the four layers of the wire resistance simulation technology increases the 5V constant voltage at each layer of the work: a vertical direction and a horizontal direction. A total of four cable. High resolution, high speed transmission response. Surface hardness, reduce the abrasion, scratch and prevent chemical treatment. With smooth surface treatment and fog. One time correction, high stability, never drift.

Five wire resistance technology touch screen of the basic level of the two direction of the voltage field through the precision resistor network are added in the glass of the conductive working surface, we can simply understand for the two direction of the voltage field work together in the same working surface, and the outer layer of nickel gold electric conduction layer only used as a pure conductor, a touch of the X axis and Y axis voltage value of the method to measure the position of the touch point. Five wire resistance touch screen inner ITO need four lead, the outer layer is only a conductor, the touch screen is drawn from a total of 5. High resolution, high speed transmission response. High surface hardness, reduce the abrasion, scratch and prevent chemical treatment. With 3000 point contact million times can be used. Conductive glass for the substrate material. One time correction, high stability, never drift. Five wire resistive touch screen with high price and high requirements for the environment. The five wire resistive touch screen is used in the outer layer of the film is a good ductility of nickel coating material, the outer conductive layer due to frequent touch, the use of good ductility of nickel gold material is intended to extend the service life but the process cost is relatively high. Although it is good to have a good ductility, it is not suitable for the working face of the resistive touch screen because it has high electric conductivity, and the metal is not easy to thickness.

Regardless of whether the four line resistance touch screen or the five line resistive touch screen, they are a completely isolated environment, not afraid of dust and water vapor, which can be used in any object to touch, can be used to draw pictures, more suitable for the use of industrial control field and office limited. Resistive touch screen is a common drawback is because the outer layer composite film of plastic materials, do not know too sharp or the use of force touch may scratch the touch screen scrapped as a result. However, within the limits, the scratch will only hurt the outer conductive layer, the outer conductive layer of the scratch for the five wire resistive touch screen is not related, and the four wire resistive touch screen is fatal. The accuracy of resistance touch screen only depends on the accuracy of A/D conversion, so it can be easily reached 4096*4096 - comparison, the four line resistance in the guarantee of the accuracy of the higher resolution, but the cost is high, so the price is relatively high.

On a：Biography IDT developed the world's first single multi touch projection capacitive touch screen technology

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