The outdoor LED display can be seen everywhere that is no longer strange to us. How to choose the product to suit your needs? Let us share some experience and focus on the basic elements of choosing LED display:
1.Type
Depending on the color of the LEDs used, outdoor LED displays can be divided into single primary colors, dual primary colors, and full color displays. The single-primary LED display can be used as a text display. Each pixel uses a single-color LED, mostly in red. The dual-primary LED display can be used as a graphic display. Each pixel consists of two red and green LED tubes. It can realize three colors of red, green and yellow display; full color LED display can be used as video display, each pixel is composed of red, green and blue. LED tube groups, and the display color is fine.
2.Dot 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 P5, P6, P8, P10, P16 and so on according to the dot spacing.
3. Gray scale
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 supported by 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.
4. The driving method
The driving mode of the outdoor LED display should be determined based on the expected display effect and budget. LED display screens are generally driven by constant current. The driving modes are divided into static scanning and dynamic scanning. In simple terms, static scanning is to control one LED of one chip of the driving chip, and dynamic scanning is to use a refreshing method for one pin of the driving chip to control several LEDs to illuminate. The static scanning display effect is relatively good, the light loss is small but the cost is relatively high, the dynamic scanning display effect is relatively poor, the light loss is large, but the cost can be reduced. Common dynamic scans are 1/2 sweep, 1/4 sweep, 1/8 sweep, and 1/16 sweep.
5.Screen brightness
The outdoor LED display is an outdoor terminal that can be used for all-weather display. Therefore, the screen brightness requirement is strict. Generally, when the screen is when the screen is staying soth to face to north, the screen brightness should not be lower than 4000 cd/m2; When the screen is staying north to face to south, the brightness is required to be no less than 8000 cd/m2, a better display effect can be achieved.
Post time: Aug-12-2020