LED displays can be divided into many types, such as: inkjet screen, LED full color display . If the LED display shows that the effect is not clear, it will directly affect the overall effect of the LED display. So how do we make the display of the LED display clearer?
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The gray level, contrast, refresh frequency and other technical indicators of the LED full color display directly affect the display effect of the LED full color display.
1. Gray level gray level refers to the brightness level that can be distinguished from the darkest to the brightest in the single primary color brightness of the led display. The higher the gray level of the led display, the richer the color and the more vivid 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, and the display level of the image color increases geometrically. The LED gray level control level is 14bit~16bit, which makes the image level resolution details and display effects of high-end display products reach the world advanced level. With the development of hardware technology, LED grayscale will continue to develop to higher control accuracy.
2, the improvement of contrast
Contrast is one of the key factors affecting visual effects. Generally speaking, the higher the contrast, the clearer the image and the brighter the color. High contrast is very helpful for image sharpness, detail performance, and gray level performance. In some text and video displays with large contrast between black and white, high-contrast led displays have advantages in black-and-white contrast, sharpness, and integrity. Contrast has a greater impact on the dynamic video display. Because the light and dark transitions in the dynamic image are faster, the higher the contrast, the easier it is for the human eye to distinguish such a conversion process. 
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