digital signage login

LCD mainly includes TFT, UFB, TFD, STN and other types of LCD. The structure of LCD is to place liquid crystal in two parallel glasses. There are many vertical and horizontal small wires between the two glasses. The direction of rod crystal molecules is controlled by power on, and the light is refracted to produce a picture.   High brightness, The higher the brightness value of the array LCD, the brighter the picture will be without blurring. Advanced display can display clearer and higher brightness product features. We rely on polarization filters and light itself. With the practice of natural light in all corners of the world, a series of liquid crystal filters must be parallel.   The higher the contrast, the more colorful and saturated the color will be, and the higher the plane will be. On the contrary, the color change is low, the color display is poor, the image will be flattened, and the color change value is different, even higher. Compared with CRT imager, LCD dot matrix LCD display has the advantages of zero radiation, low power consumption, small heat dissipation, small volume, accurate image recovery and high character visualization.   The view of “big view” simply means that the view in front of the screen can be seen the larger the sight distance, the easier it will be; As long as the viewer changes the viewing position slightly, the picture may become blurred.

From the demand of the commercial display market, LCD splicing screens are subject to more competition in the fields of education, security, engineering, digital signage, etc. Therefore, while the technology is highlighted, the LCD display is meticulously crafted and can break the small The size of the application is limited, focusing on the LCD splicing display products to achieve a “seamless” display effect in the splicing gap, as well as the further large-scale and diversified size, and the technical experience of high-definition highlight display. The LCD splicing screen is composed of multiple unit screens. Each splicing unit has a long life and low radiation to support its stable performance to support it. Different processing systems can be selected according to the user’s requirements for input signals. Supported by the application of emerging technologies, it can smoothly access massive signal sources and receive remote signals, which is conducive to the free switching of various signals through the control software, splicing into full-screen display, arbitrary combination display, image roaming and superimposing display, etc. , Such as can make it fully cope with the multi-faceted display system application of remote data roaming monitoring in the security field. It is enough to witness that such an ultra-high application solution can create personalized use for users on different occasions, and meet the needs of big data computing in the new era! The application of LCD splicing screen display is based on its excellent advantages in terms of diversified display methods and carrying massive signal reception

[Fault Phenomenon] One LCD touch screen doesn’t work, and there is no response when touching any part.   [Fault Analysis and Treatment] First check whether the connection interface is loose, and then check whether there is conflict between serial ports and interrupt number. If there is conflict, adjust resources to avoid conflict. Then check whether there are cracks on the surface of the touch screen. If there are cracks, replace them in time, Also need to check whether there is dirt on the touch screen surface, if there is, use a soft cloth to remove it. Observe and check whether the indicator light on the control box works normally. When it works normally, the indicator light is green and flashes.   If the above parts are normal, the touch screen can be checked by replacement method, first replace the control box, then replace the touch screen, and finally replace the host.   If it is a resistive touch screen, it can be overhauled as follows: 1）Check whether the connection of the touch screen is right, and whether one of the connections (taking 5V touch screen working voltage from the keyboard port) is connected. Please check the connection. 2）Observe the light condition of the touch screen control box. If it doesn’t light up or the red light is on, the control box is broken. Please replace it. 3）If not, please delete the touch screen driver and restart the computer, re-install the driver, or replace the driver with a newer version. 4）If