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Oct 15,2021| LED Knowledge
The led display has received widespread attention since its birth. With the continuous advancement of installation technology in recent years, it has been recognized and applied in various industries. The production and maintenance of led displays also require professional knowledge. How to achieve high-definition display? To achieve high-definition display, there must be four factors: one is that the film source requires full high-definition; the second is that the display needs to support full high-definition; the third is to reduce the dot pitch of the led display; the fourth is the combination of the led display and the video processor. At present, the LED full-color display is also moving towards a higher definition display.
1. Improving the contrast of the LED full-color display. Contrast is one of the key factors that affect the visual effect. Generally speaking, the higher the contrast, the clearer the image and the brighter the color. High contrast is very helpful for image clarity, detail performance, and gray level performance. In some text and video displays with large black-and-white contrast, high-contrast full-color LED displays have advantages in black-and-white contrast, clarity, and integrity. Contrast has a greater impact on the dynamic video display effect. Because the light-dark transition in the dynamic image is faster, the higher the contrast, the easier it is for human eyes to distinguish such a conversion process.
In fact, the contrast improvement of LED full-color screen is mainly to increase the brightness of full-color LED display and reduce the reflectivity of the screen surface. However, the brightness is not as high as possible, too high, but it will be counterproductive, not only will affect the LED display Lifespan will also cause light pollution. Light pollution has become a hot topic now, too high brightness will have an impact on the environment and people. Full-color LED display LED panels and LED light-emitting tubes undergo special processing, which can reduce the reflectivity of the LED panel and increase the contrast of the full-color LED display.
2. Increase the gray level of the LED full-color display. Gray level refers to the number of brightness levels that can be distinguished from the darkest to the brightest in the brightness of the single primary color of the LED full-color screen. The gray level of the Yunhai Guangcai full-color LED display High, the richer the color, the brighter the color; on the contrary, the display color is single and the change is simple. The increase of the gray level can greatly increase the color depth, making the display level of the image color increase geometrically. The LED gray scale control level is 14bit~16bit, making the image level resolution details and display effects of high-end display products reach the world's advanced level. With the development of hardware technology, LED gray scale will continue to develop to higher control accuracy.
3. Reducing the dot pitch of the LED full-color display. Reducing the dot pitch of the LED full-color display can improve its clarity. The smaller the dot pitch of the full-color LED display, the more delicate the screen display. However, mature technology must be the core support for this. The input cost is relatively high, and the price of the full-color LED display produced is also high. Fortunately, the market is now moving towards small-pitch LED display.
4. The combination of LED full-color display and video processor. The LED video processor can use advanced algorithms to modify signals with poor image quality, perform a series of processing such as de-interlacing, edge sharpening, motion compensation, etc., to enhance the image quality Details, improve picture quality. The image scaling algorithm of the video processor is used to ensure that the sharpness and gray level of the image are maintained to the greatest extent after the video image is scaled.
In addition, the video processor is also required to have a wealth of image adjustment options and adjustment effects to process image brightness, contrast, and grayscale to ensure that the screen outputs a soft and clear picture.