Basic principles for evaluating the performance of LED display screens

　　Due to the fact that LED display screens are a highly professional product, non professional customers generally do not have the basic knowledge to evaluate the product. Therefore, it is necessary to first establish a widely recognized evaluation standard. The basic function of a large information display terminal such as an LED display screen is to comprehensively and faithfully display the information source to the target audience, including static images, text, dynamic videos, and even audio. Therefore, this standard can be simply put as' looking good ', and what is shown to people is definitely good when they think it's good. By omitting many professional terminology descriptions in this way, it can also help bridge the gap with customers and achieve basic standard consensus.

　　But why do some screens "look good" and some screens "look bad"? This is because there are two key factors that affect the display effect of the display screen:

　　1. Brightness of display screen: To display information correctly in an environment, it is necessary to have sufficient brightness to ensure the actual contrast of the image, especially when used in outdoor LED display screens with harsh environmental conditions. So, according to the different usage environments, the display screen must have corresponding brightness to ensure.

　　After the display screen is put into use, the brightness of the LED tube as the light source begins to decay, so the rate of brightness decay is one of the important performance of LED display screens.

　　2. Consistency of display screen colors: When displaying the primary color, the brightness and chromaticity of each color are consistent, and when displaying white, there is no noise. This is the foundation for ensuring the correct restoration of color information from the information source.

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