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  APR

  Creative display + outdoor naked eye 3D = popular across the Internet, LED outdoor display large screens become the new city logo?

  In the current urban business circle, the collision point between the large outdoor LED display and the symbiosis of the city seems to be the answer to the naked eye 3D and creative display. The "3788 Asian Light" outdoor large screen on Guanyin Street in Chongqing has become one of the landmark representatives of the urban landscape. It staged a shocking naked-eye 3D show of the future city earlier, and this show has been screened on the short video platform of Moments of Friends. According to statistics, the data spread of the naked-eye 3D project on the whole network exceeded 100 million, and the official media CCTV and Weibo big V have all reported on it. Immediately after this giant screen, a classic scene of "light rail crossing buildings" was reproduced, and the scenes most familiar to Chongqing people were used for creative design, reflecting the unique characteristics of Chongqing. Nowadays, the cool naked-eye 3D big screen can become a new landmark of the local city and rebuild a new image of the city. Under the combination of creative video and LED outdoor large screen, according to the unique cultural characteristics of the city and the combination of naked-eye 3D, to create a unique scene, scene of its urban characteristics, just like Chongqing's "light rail passing through the building" Like this 3D show, it combines the characteristics of its own city to create the city's "IP" and create a new city identity. From the perspective of building new landmarks and culture in the city, Chen Xiaoji, a master of architecture from Tsinghua University, also pointed out in the article "Urban Big Screen: Reshaping Urban Public Space" that the big city screen represented by Times Square in New York can express and Guide the visual cultural orientation of the city, integrate its cultural orientation into the urban landscape, form part of a new cultural tradition, and highly recognizable urban characteristics. T

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• 24

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  How to adjust the clarity of the LED display

  1. gray scale The gray level refers to the brightness level from the darkest to the brightest in the brightness of the single primary color of the LED display. The higher the gray level of the LED display, the richer the color and color; on the contrary, the lower the gray level , indicating that the color is relatively single. Increasing the gray level can increase the color depth to a large extent and better present the color of the image. The gray scale of LED display is 14bit~16bit. With the advancement of technology, LED gray scale will continue to develop towards higher control accuracy. 2. the improvement of contrast One of the key factors affecting the visual effect of LED displays is contrast. Generally speaking, the higher the contrast, the clearer the image and the richer the color. High contrast has an important influence on image clarity, detail performance, and gray level performance. The advantages of high-contrast LED displays are reflected in the black and white contrast, clarity, and integrity. And the contrast will have a greater impact on the dynamic video display effect, because the light-dark transition in the dynamic image will be faster, so the higher the contrast, the easier it is for human eyes to distinguish the conversion process. There are two main ways to improve the contrast of the display: 2.1. Improve the brightness of the LED display. The contrast can be improved by increasing the brightness of the LED display. But pay attention to some occasions, such as indoor LED display brightness is not as high as possible, because the brightness is too high, it will form light pollution, it will cause damage to everyone's eyesight.

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• 23

  APR

  LED display aging test

  The aging test of the LED display screen is a very important step in the production process of the LED display screen. It is also a critical test procedure in the production of the LED display screen. The test is an important guarantee for the product quality of the LED electronic display screen. The performance of the LED display is improved after aging, which is conducive to maintaining a stable state of performance in later use. The LED aging test is a measure applied according to the product's failure rate curve, that is, according to the characteristics of the bathtub curve, so as to improve the reliability of the product. The aging test of the LED display can be divided into 4h white light aging and 48h video aging. The aging method is divided into constant current aging and constant voltage aging. Constant current source means that the current remains constant at any time. Constant current aging is in line with the working characteristics of LED current and is a scientific LED aging method. Manufacturers also use over-current impact aging, which can be adjusted after the frequency of use, can estimate the quality and life of the LED in a short time, and can also find out many hidden dangers that cannot be identified by conventional aging. The following content is the need to pay attention to when the LED display is undergoing aging test: 1. Test content: white screen, red, green, blue monochrome, gray gradient, video effect, text effect; 2. The white screen test time is not less than 24H; 3. Monochrome and grayscale gradient test shall not be less than 24h; 4.

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