|Store Name||XMY Store|
|Last Update||Wed, 19 Feb 2020 16:06:26 +0000|
|Brand Name||Wang Hui|
Capacitive touch screen introduction:
How to use the capacitive touch screen: (default direction touch screen cable position is lower)
1. The control card is inserted into the card corresponding to the touch cable (gold finger down. There is a picture reference in the link)
2. Plug the USB cable into the corresponding USB interface of the computer or system board (support 2.0 and 3.0)
3. Fit the touch area of the touch screen with the display area of the liquid crystal display
The capacitive touch screen is a four-layer composite glass screen. The inner surface and the interlayer of the glass screen are coated with a layer of ITO. The outermost layer is a thin layer of bauxite glass protective layer. The interlayer ITO coating is used as the working surface, and the four corners are taken out. Four electrodes, the inner layer of ITO is a shielding layer to ensure a good working environment. When the finger touches the metal layer, the user and the surface of the touch screen form a coupling capacitor due to the electric field of the human body. For high-frequency current, the capacitor is a direct conductor, and the finger sucks a small current from the contact point. This current flows out from the electrodes on the four corners of the touch screen, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the position of the touch point by accurately calculating the ratio of the four currents. .
Basic parameters and description
15.6 inch multi-point capacitive touch for 1920X1080 (16:9 ratio display universal)
Capacitive touch screen linuxWIN7810 and Android system plug and play
Length, width and thickness: 356.2mmX208mmX2.0mm
Android kernel 3.1 system 5.1 or above; linux kernel version 3.5 or above are plug and play.