Appears on the LED screen is how energy efficient, trust more and more people in the industry have a glance, nothing more than that from the bright LED lights, driver IC, switching power supply, commodity consumption portrayed, smart energy saving systems and layout drawing describe these aspects come into force. Of course, how in these areas to find the best balance point, be able to complete the best energy-saving LED screen appeared a role.

But I do not know when, I do not know what the reason is, perhaps unintentionally esteem in some manufacturers, the high energy concept quietly being "high brightness" vague and even replaced: the premise of the same capital, show screen The higher the brightness the more "energy", the more value! And gradually become their feedback to the customer's value "price" advantage.

In fact, it is to reach an outstanding energy-saving policy, the excesses seeking high brightness and energy saving contrary. Below, we analyze what "high brightness" and "high-energy" potential linkages.

Currently more prevalent 12000cd/m2 high brightness LED light base are using large-scale LED chips. This large-scale shopping malls mainstream LED chip as revealed by most LED screen makers have chosen throughout, there is no central skills to speak of. And we all know the time, LED screen brightness and LED drive current is proportional to the lamp. 12000cd/m2 is nothing less than to increase the brightness of the LED lamp drive current. However, the physical characteristics of LED lights will not preventable: High brightness LED lamp must be accompanied by high attenuation, low-stable properties. High attenuation is not conducive to long-term use of LED screens show needs, but also to seek high brightness becomes excesses inherent shortcomings inherent disadvantages which will at all times, the multiplier effect of camel harming the life LED screen show the number and picture effect.

To highlight PH16mm show screen, for example, this high-brightness LED light technical parameters appear: 12000cd/m2 brightness within 1.5-2 years will be in severe attenuation of 8000cd/m2, its annual decay rate of 20% or more. And some irresponsible manufacturers claim aired hours after 2 years still amounted 10000cd/m2 more brightness, and consumers to buy such a screen, two years later, even decay very quickly, but suffer from the implementation of the contract has ended, complained nowhere to turn up. In fact, consumers with a very simple way you can verify that the operation is to look at a few more than 2 years now, and every day use more than 12 hours of the show such a high-brightness screen role. More severe, in the light coming from 12000cd/m2 8000cd/m2 already dropped, the status of its high operating current does not change, the brightness will be more doubling the rate of decay, resulting in acceleration times the late decay rate becomes high attenuation The show screens. And exist in the vicious cycle of light attenuation sideways, foundation not satisfied the needs of long-term use.

To prevent light pollution, fit the needs of environmental regulations, LED show circadian use screen brightness specification is not the same. As we all know, more or less will be lost down the brightness intensity, the greater brightness adjustment, grayscale, the greater the loss. Thus, as the initial LED daytime show screen brightness value is set 12000cd/m2, in the night down to 800cd/m2 brightness, or extreme loss of gray, making the picture quality becomes poor night; either brightness can not be adjusted to night the use of regulatory requirements, and constitute severe light pollution.