Small space LED into the room should solve six technical problems

The tenth Guangzhou International Lighting Exhibition, LED display is undoubtedly the most powerful lineup, while the small spacing LED has become the highlight of the exhibition exhibitors. Because of the small spacing makes the screen resolution to further enhance the display effect comparable to projectors and LCD display, enter the indoor lighting has become a natural move to open up new markets.

So how to enter the small space LED indoor market, in the process of entering the market, what are the problems faced, how to solve?

Should Chinese photoelectric association invited, sustained attention to the progress of LED display technology of the large screen display performance list network general manager Zhang Qiang, held during the exhibition "LED display engineering project bidding and construction specification exchange" detailed interpretation.

Zhang Qiang introduced, at present there are 4 types of indoor display applications, including conference display, video surveillance, command control and information display, statistics show that in 2013 the four display market reached 21 billion yuan, is a very large market space. But to cut into the indoor application market, small spacing LED to meet the technical requirements of the 6 areas.

How to achieve "low brightness and high ash"

Different from the outdoor display requirements of high brightness, refresh rate and energy requirements, indoor display need more the brightness down, the human eye sensitivity test showed that from the point of view, LED (active light source) the brightness is passive light source (projectors and LCD) 2 times, on specific data, LED into small spacing the best indoor brightness in 100 - 300cd/m2. However, to reduce the brightness of the gray level loss need to be completed by technical supplement. This exhibition, large screen display performance of the network released the test samples with small spacing of LED, and gives the test method and standard test shows that at present only a few manufacturers can achieve low high ash light at the same time, most manufacturers need a certain degree of improvement.

How to match the standard resolution of a signal source

Different from the outdoor display, outdoor advertising association according to the screen resolution for broadcast content, indoor display signal source has a certain standard, as manufacturers in terms of not adapt to the request signal source access indoor display resolution, but to adapt to the indoor signal source of demand, design and ensure the corresponding resolution, so as to meet the needs of users. It is gratifying that, after more than a year of indoor display products, as well as the understanding of customer needs, some manufacturers have completed this change and reached the user needs.

How to support the system access and display control of multiple signals and complex signals

With the outdoor display signal compared to show the characteristics of indoor multi signal access and complex signal access, such as video conferencing, remote access signals, local access signals and use access, experiments show that the simple segmentation scheme to realize multi screen through signal access will reduce the standard signal. Therefore, how to solve the problem of multi signal and complex signal access also requires small spacing LED technical support.

How to solve the problem of small space display

Compared with the conventional screen, small spacing will appear afterglow, the first sweep of the dark, low ash red and low ash uneven problem, the need to consider and solve the small pitch LED.

How to realize the seamless splicing and speed correction

The biggest advantage is the small spacing LED seamless, but the higher requirements in the stitching. For liquid crystal, as long as the seam uniform, there is no problem, the joint is not obvious. But LED small spacing not, if the module are pushing too tight, there will be a bright line, leaving the module will appear dark. Really good stitching is not easy. Therefore, the process and the correction technology and the efficiency of the guarantee and good combination of the need to ensure that.

How to reduce the mortality rate, to ensure the stability of the screen

Traditional industry standard is LED dead light rate of 1/10000, but the small spacing is not, in accordance with the traditional standards, if there are ten thousand square meters of dead lights, the screen can not see the 1. In the future, the dead light rate needs to be controlled to 1/100000 or even one millionth of the time to meet the needs of long-term use, otherwise, with a period of time, full screen are dead lights, the user is unacceptable.

In addition to meet the technical requirements of the 6 major issues, Zhang Qiang also pointed out that the outdoor display is to sell products, focusing on how much to sell 1 square meters. But the indoor display is sold as a whole solution. Indoor outdoor display manufacturers to enter the market, companies first need to change the thinking of to ask customers what to buy from the specification and size of the product, to ask customers to show what and how much signal to be displayed on the screen, what is the signal specification? Then according to the needs of the design of the resolution, with the number of points, what system and how to use the user signal access system to meet the needs of users. Therefore, the indoor display is to do the overall solution and optimization, rather than simply screen price competition. Due to the adoption of different solutions to the integration of the chamber, the difference will naturally arise, which can explain why the indoor display market did not appear as outdoor display as the vicious competition.