Whether at home or abroad, in the outdoor LED display industry, display brightness has been the most eye-catching, but also has been used to evaluate the display effect of the most intuitive indicators. It is commonly believed that the brighter the outdoor LED display, the brighter the image and the clearer it looks in the distance. And many times we hear that our clients said they need the brightness of the LED screen more that 6000nits for outdoor,because there’s direct sunlight outside. But is the brighter of LED displays,the better it is ?
It’s not as if higher brightness is better or lower brightness is better. It’s about choosing the right brightness according to the environment. For indoor LED display,the brightness is actually required to be lower than 800nits,because the internal light is relatively dark, if the led screen is too bright, we will feel dazzling and uncomfortable. So the internal display screen requires low brightness/high gray scale/no shadow. The so-called low brightness means that the brightness must be controlled below 800nits or even lower to meet the indoor sensory requirements. For semi-indoor environments,the brightness should be more than 2000nits. In the choice of outdoor LED display screen,the brightness it is better more than 4000nits. Some businesses in order to attract customers, make high brightness, some even as high as 9000nits above.
But for outdoor LED displays, the blind pursuit of high brightness is meaningless.LED screen adopts spontaneous light technology. As the light source, LED beads will inevitably suffer from brightness attenuation after being used for a period of time. To achieve high brightness, a greater driving current is required,there will be high energy consumption. On the other hand, under high current, the stability of LED beads will be reduced, and the attenuation will be faster. In other words, the pure pursuit of high brightness is actually at the expense of LED screen image quality and life.
Moreover, the problem of light pollution in cities around the world has become very serious now, and many countries have even issued laws and regulations to strictly control the brightness of outdoor lighting and display screens.The outdoor LED screens, as one of the higher brightness of many display technologies, almost dominate the outdoor display. But once at night, too bright screen will become a kind of invisible “pollution”, therefore, the pursuit of brightness and environmental protection of the balance appears more meaningful. The last factor to consider is cost. The mere pursuit of higher brightness is bound to increase the overall cost of the project, which also means that users are likely to buy more performance than they need, resulting in waste.
Of course,the LED display brightness can also be adjusted, there are currently two ways.One is by regulating the current flowing through;The second is the use of pulse modulation to achieve grayscale regulation. But according to the environment to choose the appropriate brightness, will not cause waste or excessive light pollution.
Post time: Aug-17-2020