LED screens operate on the principle of light modulation. Each pixel consists of three basic LEDs (red, green, and blue), which can be turned on or off and can also adjust brightness. By mixing the light from these LEDs, the screen can create a variety of colors and display images.
There are two types of LED screen cabinets:
Indoor
Designed for use indoors, they have high resolution and brightness.
Advantages: High image quality and color reproduction, low brightness.
Outdoor
Designed for use outdoors, they have enhanced protection against moisture and dust (IP65 standard and above) and high brightness.
Advantages: Good visibility in sunlight and resistance to weather conditions.
| Brand | Country |
|---|---|
| NovaStar | China |
| Linsn | China |
| Colorlight | China |
| HollyLite | China |
| Dicolor | China |
| Mediacore | China |
| Xunwei | China |
| Vanch | China |
| BrightSign | USA |
| Barco | Belgium |
Types of Pixel Production Technologies
- SMD (Surface-Mounted Device)
LEDs are mounted on the surface of the printed circuit board, providing high pixel density and image clarity.
Application: Used in various types of LED screens, including indoor and outdoor models. - DIP (Dual In-Line Package)
LEDs are housed in plastic packages and placed on the printed circuit board. They are less suitable for high resolutions but are clearly visible from long distances.
Application: Commonly used in advertising billboards and outdoor screens. - COB (Chip on Board)
LEDs are placed directly on the printed circuit board, improving heat dissipation and brightness.
Application: Used in high-quality displays and digital signage. - Mini LED
Utilizes smaller LEDs, allowing for increased pixel density and improved image quality.
Application: Used in premium LED screens and displays for televisions.
USEFUL FORMULAS
How to determine the pixel pitch of a cabinet:
Width (mm) / Number of pixels
500mm / 200px = 2.5mm
Pixel pitch = 2.5mm
How to determine the optimal distance to the screen:
Pixel pitch * 1.5
3mm * 1.5 = 4.5m
Optimal distance to the screen = at least 4.5m