Point spacing is one of the LED display an important technical indicators, what is the point spacing? How to choose led spot according to the distance display? This is the question of many of my friends, the following Liancheng Fa Technology Group engineers answer this one by one:
What is the point spacing?
Dot spacing is the distance between two pixels to reflect the pixel density, dot spacing and pixel density is the physical properties of the display; information capacity is the unit of pixel density of the one-time display of the information carrying capacity of the number of units. The smaller the dot pitch, the higher the pixel density, the more the information capacity per unit area can be displayed at a time, and the closer the distance suitable for viewing. The greater the distance between dots, the lower the pixel density, the less information capacity can be displayed once per unit area, and the farther the distance is for viewing.
How to choose LED display point spacing?
Choose led display point spacing, and two aspects of the factors:
First, LED display line of sight
Display on the location, usually when people stand in the distance to see, just select the LED display screen to determine the point spacing is an important factor.
Generally have a formula of the best visual distance = point spacing / (0.3 ~ 0.8), which is a rough range. For example, 16mm point spacing display, the best visual distance is 20 ~ 54 meters, the distance between stations than the minimum distance, you can tell the display of a pixel, a sense of grainy, stand far Yet, the human eye can not tell the details of the characteristics. (We target normal vision, excluding myopia and hyperopia). In fact, this is also a figure probably.
For outdoor LED display, the distance from the general use of P10 or P12, a little further with P16 or P20, and for the indoor display, the general P4 ~ P6 can be used for a little P7.62 or P10.
Second, the total number of LED display pixel points.
For video, the basic is VCD format, resolution 352 * 288, DVD format 768 * 576. So for the video screen, we recommend that the minimum resolution of not less than 352 * 288, this display is good enough. If lower, can be displayed, but can not achieve better results.
As for the display of text and pictures based single and double color LED display, the resolution of the request is not high, according to the actual size, minimum display 9 font problems, according to your amount of text to be set.
Therefore, the general choice of LED display, the smaller the better point spacing, the higher the resolution will be high, the display was clear. However, we must also consider the cost and demand, application and other factors.
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