Hot concern: small spacing LED into the room what is the problem?

Low bright high gray is the threshold of LED entry

In the field of indoor display, most of the traditional LED display is used in advertising display or information display. With small pitch LED display products gradually mature, the rapid expansion of LED display applications, indoor display covers commercial display, conference display, command and control, scheduling and monitoring are likely to become the market of small spacing LED. The future of the market may be hundreds of billions of dollars a year.

The face of the temptation of the market, LED display manufacturers flocked. The LED display of listed companies have released its small spacing of LED products: Riyadh (300296, shares) of large size LED TV, Chau Ming Technology (300232, shares) of the "LED super TV", the photoelectric (300269, shares) "micro density LED display" and so on, though the different names, but virtually all the small pitch LED display. In addition to these listed companies, good indoor small spacing LED market and ready to test the water company, the industry is not a minority.

However, the current size of the small LED display screen meets the needs of indoor applications? Simple LED display directly from the outside to the indoor it? The application of the product environment has undergone great changes, the heat of the LED screen manufacturers need to think about it, LED display the product itself is also based on the design needs to be changed according to the application environment?

Therefore, if the small pitch LED display will be more than 1200 square meters of the nominal brightness cd/ applied directly to the indoor environment, the only two results: either the high brightness damage the eyes of the user, or reduce the brightness and gray loss loss of quality, both of which is not a user want results.

To solve this problem, it is necessary for us to display manufacturers to upgrade the current small screen display, the development of low brightness high ash, small spacing LED display. The so-called low light high ash, concrete to explain: small pitch LED display brightness in the range of 100 square meters -300 square meters cd/ cd/ interval, showed no loss of gray or gray images, the degree of loss in imperceptible in.

LED display to achieve low brightness and high brightness characteristics, and the display chip, drive, control and other related aspects. Therefore, the display manufacturers need to concentrate on R & D to make the real environment for the application of the display screen. We are delighted to find that the market has been the emergence of low light small pitch LED display high ash. The products we tested, with small pitch products excellent in brightness is 100cd/ square meters, or even less, the naked eye is difficult to distinguish gray scale loss, good quality reduction.

Therefore, the low brightness high gray LED display manufacturers have entered the indoor display applications must cross the threshold. Low brightness and high ash will be one of the key factors to distinguish the small spacing LED display product quality. For small pitch products, LED display will no longer be compared to those who compare the high brightness, but the comparison of their low brightness. Than who is the display can be done to reduce the brightness without loss of gray and quality. In other words, only to achieve a low brightness and high gray LED screen is small enough to meet the requirements of users, with a competitive strength of good products.

Indoor small spacing LED is an emerging market, is bound to face the current lack of industry standards, resulting in a lot of manufacturers blindly launched the product does not meet the actual requirements. The market will follow the rule of survival of the fittest, users must be able to make the right choice. Low brightness and high ash is undoubtedly the first threshold of small spacing LED screen into the room.

One of the most striking differences between indoor and outdoor applications is the change in ambient light. LED display in outdoor applications, the intensity of the sun during the day is very high, so the outdoor LED display brightness need to highlight, then bright, ultra bright! The higher the brightness of the display screen, the higher the technical specifications.

However, after a small pitch LED display into the room, great changes have taken place in the application conditions: the first is the indoor environment brightness is greatly reduced; secondly, compared with the traditional user LED display, small spacing of LED products is rapidly greatly closer to the display and viewing distance between users; another notable feature is the meeting room command and control, and the control room users will continuously for a long time on the screen.

The human eye in the room under the dark environment, close, long time to look at the high brightness of the small spacing LED display, LED unique high brightness often makes people feel dazzling, and even cause eye pain, tears and vision. Therefore, the LED display brightness is too high, will give users in the indoor application of visual fatigue, and even may cause irreparable damage to the human eye! It can be said that the small spacing LED display brightness is not the higher the better, it must be down the brightness.

Grasp the scientific standard to take the first step

First, we refer to the indoor application environment, a variety of indoor display product brightness range. The brightness range TV is 350 cd/ square meters -500 square meters cd/; brightness range DLP splicing wall is 250 cd/ square meters -400 square meters cd/ LCD wall; brightness range is 450 cd/ -700 square meters cd/ square meters.

Because the human eye is relative to the brightness of the perception, so the use of different lighting technology to monitor the brightness of the human eye perception will be different. After a lot of testing us, we believe that the brightness range of LED display control in 100 cd/ -300 square meters cd/ square meters, in the range of brightness,