LCD Encyclopedia

4 Classifications of Resistive Touch Screens

Views : 89
Author : China Touchscreen supplier
Update time : 2021-11-26 14:19:20
When working, the resistive touch screen can only judge one touch point at a time, and if there are more than two touch points, it can not make a correct judgment, so the resistive touch screen is only suitable for the judgment of some simple actions such as clicking and dragging. There are four different types of resistive screens.

1. Four-wire resistance screen:

When the two transparent metal layers of the four-wire resistance analog technology work, the constant voltage of each layer is increased by 5V: one vertical direction and one horizontal direction. A total of four cables are required.

Four-wire resistive screen features: high resolution, high-speed transmission response. Surface hardness treatment, reduce scratches, scratches and anti-chemical treatment. With smooth surface and fog surface treatment. Once correction, high stability, never drift.

2. Five-wire resistance screen:

The base of the five-wire resistance technology touch screen adds the voltage fields of both directions to the conductive working face of the glass through the precision resistance network, we can simply understand that the voltage fields of the two directions are time-sharing work on the same working face, while the outer nickel-gold conductive layer is only used as a pure conductor. The position of the touch point is measured by time-sharing detection of the X-axis and Y-axis voltage of the inner ITO contact point after touch. The inner ITO of the five-wire resistance touch screen needs four leads, the outer layer only acts as a conductor, and there are five leads for the touch screen.

The characteristics of five-wire resistance screen: high resolution, high-speed transmission response. High surface hardness, reduce scratches, scratches and anti-chemical treatment. It can still be used for 30 million times of contact with the same point. A medium in which conductive glass is used as a substrate. Once correction, high stability, never drift.

3. Seven-wire touch screen.

The implementation method of the seven-wire touch screen is the same as that of the five-wire touch screen, except that a line is added in the upper left corner and the lower right corner. When performing a screen measurement, connect one line in the upper left corner to the VREF and the other to the positive reference end of the SAR ADC. At the same time, one line in the lower right corner is connected to 0V, and the other is connected to the negative reference end of SAR ADC. The conductive layer is still used to measure the voltage of the voltage divider.

4. Eight-wire touch screen.

Except for adding a wire to each bus, the implementation method of the eight-wire touch screen is the same as that of the four-wire touch screen. For the VREF bus, one line is used to connect the VREF, and the other is used as the positive reference input of the digital-to-analog converter of the SAR ADC. For the 0V bus, one line is used to connect the 0V, and the other is used as the negative reference input of the SAR ADC digital-to-analog converter. Any of the four wires on the unbiased layer can be used to measure the voltage of the voltage divider.
Related News
Read More >>
12 Tips For Using Capacitive Touchscreens 12 Tips For Using Capacitive Touchscreens
Dec .09.2021
Compared with the resistive touch screen, the capacitive touchscreen is more accurate and easier to support multi-touch. But good things are generally more delicate, so the use and maintenance has also become a problem. The following is a summary of 12 capacitive touchscreens using tips.
4 Characteristics of Resistive Touch Screen 4 Characteristics of Resistive Touch Screen
Nov .17.2021
Resistive screen is through the touch screen, change the size of the resistance, so that the internal chip feel the change in the size of the resistance, the formation of feedback, the response is relatively slow compared with the capacitive screen. Here
Temperature: Closely Related to the Life of LCD Screen Temperature: Closely Related to the Life of LCD Screen
Sep .17.2021
In general, the temperature of the LCD module is divided into two parts, one is the working temperature, the other is the storage temperature.
How to Choose the Brightness of LCD Screen? How to Choose the Brightness of LCD Screen?
Sep .10.2021
The brightness of LCD screen is the main parameter that affects the price of LCD, so when selecting TFT LCD screen, we don't directly choose high brightness LCD screen, but choose the LCD screen with appropriate brightness according to the use environment
Know more about LCD technology?