How to select the dot spacing of LED display? To sum up, there are mainly two factors

　　I. Sight distance of LED display

　　The position of the display screen and the distance people usually stand at are only an important factor in determining the distance between points when selecting LED display screens.

　　Generally, there is a formula that the best visual distance=distance between points/(0.3~0.8), which is an approximate range. For example, for a display screen with a point spacing of 16mm, the best viewing distance is 20~54m. If the distance between the stations is closer than the minimum distance, you can distinguish the pixels of the display screen one by one. The sense of granularity is strong. If you stand far away, the human eye cannot distinguish the characteristics of details. (We aim at normal vision, excluding myopia and hyperopia). In fact, this is also a rough figure.

　　For outdoor LED displays, P6 or P8 is generally used for those close to each other, and P10 or P16 is used for those far away. For indoor displays, P2-P6 is generally available, and P6 or P8 is used for those far away.

　　Second, the total pixel points of LED display.

　　For video, the basic format is VCD, with a resolution of 352 * 288 and a DVD format of 768 * 576. Therefore, for the video screen, we recommend that the minimum resolution should not be less than 352 * 288, so that the display effect is good enough. If it is lower, it can be displayed, but it cannot achieve better results.

　　For the single and double primary color LED display screen mainly displaying text and pictures, the resolution requirement is not high. According to the actual size, the minimum font size of 9 can be determined according to the amount of your text.

　　Indoor LED display screen, the smaller the dot spacing, the better, the higher the resolution, the display will be clear; If it is an outdoor LED display screen, the viewing distance should be considered. If the distance is too small, people in the distance can't see clearly, and if the distance is too large, people in the vicinity can't see clearly, so it should be considered comprehensively. However, factors such as cost and application scope should also be considered.

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