How to do outdoor engineering LED display, how to choose the right one?
Date: 2019-11-18
With the rapid development of outdoor led display, LED display manufacturers have sprung up like mushrooms, how to choose the outdoor led display products suitable for their own projects? Jinghui elaborated the selection principle from the basic parameter selection of outdoor LED display, component material selection and LED display manufacturer selection.
The choice of basic parameters of outdoor led display:
1，Type
According to the color of the outdoor led display, the outdoor led display can be divided into single primary color, dual primary color and full color screen. A single outdoor led display can be used as a text display. Each pixel uses a single color outdoor led display, most of which uses red. The dual-primary LED display can be used as a graphic display. Each pixel consists of red and green, which can display red, green and yellow. A full color led display can be used as a video display. Each pixel consists of three red, green and blue colors, showing a delicate color.
2, gray
Gray scale is an important indicator to measure the display effect of outdoor led display. Gray scale is determined by the number of analog-to-digital conversions in the case of other supporting hardware. The mainstream has 8 bits, 10 bits and 16 bits. The number conversion corresponds to 256 kinds of brightness changes, that is, 256 levels of gray, a total of 256 × 256 × 256 = 16,777,216 color changes, that is, the so-called 16M color; 10-bit analog-to-digital conversion corresponds to 1024 kinds of brightness changes, that is, 1024 gray levels There are 1024 × 1024 × 1024 = 1073741824 color variations, which is commonly known as 1.07 billion colors. The higher the gray level, the better the display.
3，point spacing
When selecting the outdoor led display, the point spacing of the display screen should be selected according to the distance of the audience. The outdoor led display screen generally has P4, P6, P8, P10, P16 and the like according to the point spacing. Generally, it can be estimated according to the simplified formula “best visible distance=point spacing/(0.3~0.8)”. For example, with P16 display screen, the point spacing is 16mm, the best viewing distance is 20-54 meters.
4, outdoor led display is an outdoor terminal that can be used for all-weather display, so the screen brightness requirements are more stringent, the general requirements, in the case of the screen sitting south facing north, the screen brightness should not be lower than 4000cd / m2; when the screen sits When the north is facing south, the screen brightness is required to be no less than 8000 cd/m2 to achieve a better display effect.
English
Follow us