Now our society is developing very rapidly, and all walks of life are developing rapidly. It is very effective to use the LED display to promote a certain product or a certain activity. It can be seen in some street intersections, but how to choose an LED display is a headache. Then let the editor of YONGS LED display tell you how to distinguish the quality of LED display.
1. Maximum brightness
It refers to the brightness of each primary color of the LED display at the highest gray level and the highest brightness under a certain ambient illumination. In short, it is the brightness measured by the light gun in the normal direction when the display is set to white 255 levels using the software. For outdoor LED display screens, depending on the environment in which they are used, there will be different requirements for the maximum brightness, because in the case of strong ambient light, the brightness of the LED display screen is required to be higher, so that the masses can clearly see the content displayed on the screen.
2. Color temperature
When we see on the display that the color of the image is inconsistent or different from the material, our picture is seriously distorted, which is related to the color temperature of the white balance of the LED display. If the human eye directly looks at the display, the white balance The color temperature value is between 6500 and 8000K, and if it is a display screen used by TV stations, the actual color temperature of the screen needs to be adjusted to about 5500K, so that the picture on the display screen is real after being recorded and broadcasted by the camera. .
3. Refresh rate
The refresh rate refers to the number of times the information displayed on the LED display is completely displayed per second. If the refresh rate is too low, the LED display will shake when viewed by the human eye. Usually, we will see scan lines appearing when shooting with the camera. Usually, the requirement of the human eye for the refresh rate is above 300Hz, that is, as long as the refresh rate exceeds 300Hz, there will be no shaking feeling when viewing the LED display with the naked eye. If you use a camera to shoot, according to the different settings of different cameras, the minimum requirement is generally The scan line cannot be captured when the frequency is above 600Hz.
Fourth, the viewing angle of the light-emitting tube
The light-emitting angle of the light-emitting tube refers to the angle formed between the two observation directions of the same plane and the normal direction when the brightness in the observation direction drops to half of the brightness in the normal direction of the LED display. Divided into horizontal viewing angle and vertical viewing angle.
