Liaoning, Heilongjiang and Jilin large-screen display 40-inch 46-inch 55-inch 60-inch LCD splicing screen | touch one machine - Shenzhen De Weiya Technology With increased competition and raise the level of technological processes, LCD manufacturers to improve the standard of raw materials. Strengthen internal quality control of the production and testing, greatly reducing the frequency of occurrence of dead pixels. Detect dead pixels is relatively simple, as long as the brightness and contrast of the LCD screen is transferred to the screen (highlighted) or tune into the smallest (black screen), you will find on the screen the number of highlights and how much a dark spot. As long as the number of dead pixels does not exceed a certain standard, one or more dead pixels is normal, but preferably not less than A-level panel standard. Of course, in addition to the number of the number of dead pixels, B-and C-level panel performance in other areas can not be compared with the A-level panel. Compared with the A-level panel, B-and C-level panel brightness is relatively uniform, the relative lack of color saturation, poor image color reproduction capability, appearance, and even there could be damage. In addition to using professional equipment to determine the level of the liquid crystal panel, consumers can take advantage of the intuitive way to identify to the naked eye. Best known A-level panel contrast, the B-level and C-level panel will immediately show his true colors. In addition, the panel maker also A panel is divided into A + +, A +, A three ladder, optimal quality of the liquid crystal panel suitable for consumers require higher display quality. Liaoning, Heilongjiang and Jilin large-screen display 40-inch 46-inch 55-inch 60-inch LCD splicing screen | touch one machine - Shenzhen of Dewei Ya Technology General case, the number of A-level panel dark spots less than 3, the number of bright spots less than 3 months, and the sum of the highlights and bad points less than 5; A + grade panel dark spots less than three, and the entire screen is not bright spot, the number of dead pixels is less than 3; A + + grade panel neither highlights nor there are dark spots, the number of dead pixels is 0. A small number of liquid crystal display manufacturers claim that their display products are no bright spots, the liquid crystal display used is A + grade panel. In addition, you can also take advantage of the professional testing software to test other indicators of the liquid crystal display. For example, Nokia MONITOR TEST this software is that consumers can carry in the disk test procedures. The software provides a total of 15 options, geometry (geometric), Brightness and Contrast (brightness and contrast), HighVoltage (high voltage) Colors (color), To controlpanel / display (Display Properties control panel), Convergence (convergence), Focus (focus) Resolution (Resolution) the Moire (water ripple), Readability (text definition), jitter (jitter) Sound (noise). For LCD monitors, in addition to can not test the response time, the other main performance parameters at a glance, let alone consumers concerned about dead pixels. If the display of pure color, contrast, brightness, B-class and C-level panel will be nowhere to hide. Ultra Narrow LCD splicing unit the Samsung original industrial DID LCD, using the most advanced LCD intensive light backlight, backlight color reproduction, lifelike images, point-like super-dense, uniform backlight brightness. Using the high-margin electronic components, unique intelligent color correction technology, so that colors are brighter and naturally advanced LCD UV2A crystal arrangement technology: bright field bright, energy-saving, ultra-high energy efficiency, dark field no light leakage ultra-high contrast ratio 6ms response speed, image smoother with energy saving, environmental protection, no radiation, long life, long-term use of uniform brightness, backlight No Glass, safe transport panel attach the cover material sturdy, unbreakable. LCD backlight unit using the most advanced technology, which greatly enhance the the splicing unit's overall display, with outstanding technology. Monitoring center: Liaoning, Heilongjiang and Jilin large-screen display 40-inch 46-inch 55-inch 60-inch LCD splicing screen | touch one machine - Shenzhen of Dewei Ya Technology public security, finance, energy, transportation, mining, government, corporate control and command and control center public: airports, railways, subways, highways and other transportation industries, libraries, museums, zoos, shopping malls and other exhibition spaces business presentations: TV studio, large-scale performances and commercial exhibition, hotel lobby, enterprises and institutions office lobby, conference rooms research Military: scientific research and educational institutions, medical institutions, military operational command, weather Geographical Survey