With the rapid development of outdoor LED electronic screens, LED electronic screen manufacturers have also sprung up, so how to choose outdoor LED electronic screen products suitable for your own project? This article focuses on the selection principles from the selection of basic parameters of outdoor LED electronic screens, the selection of composition materials and the selection of manufacturers. How to choose outdoor LED electronic screen?

  Basic parameter selection of outdoor LED electronic screen

  1. Type

  According to the color of the LED used, the outdoor LED electronic screen can be divided into single primary color, dual primary color and full color screen. The single-color LED display can be used as a text display, each pixel uses a single-color LED, most of which are red; the dual-color LED display can be used as a graphic display, each pixel is composed of red and green LED tubes, It can display three colors of red, green and yellow; the LED electronic screen can be used as a video display, each pixel is composed of three LED tubes of red, green and blue, and the display color is delicate.

  2. Point spacing

  When choosing an outdoor LED electronic screen, the point spacing of the display screen should also be selected according to the distance of the audience. The outdoor LED electronic screen is generally divided into P4, P6, P8, P10, P16 and so on according to the point spacing. Generally, it can be estimated according to the simplified formula "best viewing distance = dot spacing/(0.3~0.8)". For example, with a P16 display screen and a dot spacing of 16mm, the best viewing distance is 20-54 meters.

  3. Grayscale

  Grayscale is an important indicator to measure the display effect of outdoor LED electronic screens. Grayscale is determined by the number of analog-to-digital conversion bits when supported by other supporting hardware. The mainstream is 8-bit, 10-bit and 16-bit. The digital conversion corresponds to 256 kinds of brightness changes, that is, 256 levels of grayscale, and there are 256×256×256=16777216 kinds of color changes, which are commonly called 16M colors; 10-bit analog-to-digital conversion corresponds to 1024 kinds of brightness changes, that is, 1024 levels of grayscale , a total of 1024×1024×1024=1073741824 kinds of color changes, that is, 1.07 billion colors commonly referred to. The higher the gray level, the better the display effect.

  4. Drive mode

  The driving method of the outdoor LED electronic screen should be comprehensively determined according to the expected display effect and budget. LED electronic screens are generally driven by constant current, and the driving methods are divided into static scanning and dynamic scanning. In simple terms, static scanning means that a pin of the driver chip controls an LED, and dynamic scanning means that a pin of the driver chip adopts a refresh method. Control several LEDs to light up. 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 scan, 1/4 scan, 1/8 scan and 1/16 scan.