Considerations and common problems of capacitive touch screen

- Jul 19, 2018-

1. If the user is using a capacitive touch screen, it is recommended that users in the first use, first of all according to the requirements of the relevant instructions to properly install the capacitive touch screen required by the driver, and then click on the Screen "start"/"program"/"Microtouch Touchware"

To run the screen calibration program, after the calibration is completed, the system automatically store the calibrated data in the controller's register, and then restart the system after the screen no longer need to calibrate.

2, if in the middle of the operation Capacitance touch screen, changed the touch screen resolution or display mode, or adjust the touch screen controller refresh frequency, feel the cursor and touch point can not correspond, must be reset to touch screen system operation.

3, in order to ensure the normal operation of touch screen system, in addition to ensuring the proper installation of the system software, it is important to remember not to install two or more touchscreen drivers on a single host, which can easily cause conflicts when the system is running, thus making the touch-screen system unusable. 4, in the use of resistive touch screen, if you find that the cursor is not moving or can only be moved in the local area, the user can see if the touch area of the touchscreen is always pressed by another touch, for example, once the touch screen is pressed by the display shell or cabinet shell, it is equivalent to a point that has been touched,

Then the coordinate position of the feedback to the controller is inaccurate.

5, previously mentioned, once the system in the replacement display resolution, adjust screen size and the first installation will appear click or drift, you need to start the application with the localization program relocation, but in the positioning, it is best to use a relatively thin pen or fingertip positioning, so more accurate.

6, the surface acoustic wave touch screen working environment requirements are high, it must be required to work in a clean, dust-free environment, and also regularly clean the surface of the touch screen dust, otherwise, the dust in the air covering the touch screen around the reflective stripes or transducers, it will affect the correct positioning of the system. 7, do not let the touch screen surface with water droplets or other soft things glued to the surface, otherwise the touch screen is easy to mistakenly think that there is a hand touch caused by the surface acoustic wave screen is not allowed.

In addition to cleaning the surface of the touch screen dirt, users can use a soft cloth or cleaning agent carefully from the center of the screen to wipe out, or with a dry soft cloth dipped in industrial alcohol or glass cleaning liquid clean touch screen surface. 8. If you touch the surface acoustic wave touch screen with your hands or other touch objects, touch screen response is very slow, which means that the touch screen system has been obsolete, the internal clock frequency is too low, or because the touch screen surface with water droplets on the move, in order to allow the touch screen to restore rapid response, you must replace or upgrade the system,

Or use a rag to dry the surface of the touch screen drops. 9, the touch screen generally uses the serial port to carry on the signal transmission, takes the signal from the PS/2 port, and the TPS screen is from the host power source directly to take the electricity. If the LED is not lit, the signal is not taken, the PS/2 line on the control box may be broken. If the light is on, but still does not flash, the control box is broken, so the user must replace the control box. If the replacement of the control box or not, it is possible that the screen is too tight, need to be around the screws a little loose, because the touch screen is made up of special materials, it is not too easy to damage the body. If the serial port is bad or disabled, it will cause the driver to fail to install because the serial port is automatically found when the driver is installed. Even if it can be installed, the mouse will not move or can not be positioned. It is best not to use a serial mouse to judge the quality of the serial port, maybe 9 of the serial port for them to use different ways. If the screen is pressed, or if the ground is not properly connected, it will result in an inability to locate.

If there is some area can not click or slow reaction, it may be dust impact, need to take apart the shell to remove dust. 10, when the finger touch the capacitive touch screen of a certain position, the touch screen does not have any reaction, this is likely to be the touch bit inaccurate, the cursor of course can not be correctly positioned. If the cabinet shell presses the touch area the user can increase the distance between the cabinet and the monitor screen, and if the display shell presses the touch area, the user can try to loosen the screws of the display casing.