Development trend of high-definition LED full-color screen

The development direction of high-definition LED full-color screens, the development of LED full-color screens has made great contributions to society in the past few decades, the most intuitive train number and timetable in the ticket office of the railway station, the number and time display of the waiting platform, bus station, airport, subway , high-speed rail, bank exchange rate, securities hall information announcement, etc. can see the figure of full-color LED screens. Up to now, full-color LED screens in civilian fields such as shopping malls, nightclubs, movie theaters, grocery stores, convenience stores, etc. are delivering promotions. And the latest product information, the current development direction of LED full-color screen is to develop towards high density, that is, the display effect is better and more delicate, and the color is more realistic. The future trend of LED chips for full-color screens The current market share of small-pitch LED full-color screens is about 10%, and it is rapidly increasing. The future trend of the market will be: 1. Commercialization of ultra-high-resolution products Higher-resolution products are attractive to some high-end commercial advertisers, so high-screen 2K full-color LED screens are A high-end model favored by shopping malls.

In the future, if there are 4K LED full-color screens on the market, the related costs will be more mature. Specifications below P0.8 pitch will be new stars in high-end commercial spaces in addition to war room applications, and it will take longer to have a chance to see them. to commercial results. In the direction of future technology development, how small should the size of the LED chip be reduced? Judging from the existing LED packages such as 0505 and 0404, it is already the limit of the package size of the current commercialization. Only the demand for higher screens such as the aforementioned 4K and 8K can be commercialized. In the future, LED manufacturers will be able to overcome the problem that the size is too small and cannot be wired, or even non-traditional LED packages with proper protection for unpackaged products.

2. Smaller size LEDs 1010, 0909, and 0808 are relatively easy to manufacture small-pitch LEDs. With the existing 0808 LED package, LED full-color screen products with small pitch P1.2 can be realized. LED packages with smaller sizes such as 0505 and 0606 are more expensive, and the cost mainly comes from cutting test and picking.

The small-pitch LED market has grown rapidly in just three years. Representatives of Taiwanese manufacturers are Everlight, Hongqi, etc. The main manufacturers in the Chinese market include Leyard, Lianhe Huiye, Absen, Sansi, etc. etc. The achievements of these LED full-color screen manufacturers in the field of global LED full-color screens are obvious to all. The international manufacturers including Barco, Daktronics, etc. are the leaders of LED full-color screens in stadiums, theaters, stages, public and commercial spaces. Manufacturers have also entered the small-pitch LED full-color screen market in recent years, driving a new wave of business opportunities. In 2015, the LED full-color screen market was greatly favored by the market due to its small-pitch and high-definition specifications. The market outlook showed significant growth, and the hottest market was the Chinese market. Other markets include Southeast Asia, Northeast Asia, North America, Europe, the Middle East, and South America where the Olympic Games will be held in Brazil in 2016. The small-pitch LED full-color screen market is also rapidly opening up.

The indoor LED full-color screen market also shows a similar trend-the brightness of the new technology is improved, and the driving current can be reduced. In this field, the mainstream LED packaging specification in the past was 3528, which is now replaced by 2121 and 2020, and the dot pitch is further reduced. Therefore, the number of LED particles used per unit area increases, and the dot distance between each other is less than 2.5mm, which can already achieve P1.9 , P1.6 high specification, and there is no visual defect of stitching seam. If matched with a good driver IC, the color and picture performance can be better.

With the positive impact brought about by the evolution of specifications, the market also likes the high-picture full-color screens made of such small-pitch LEDs. The pictures are clear, and they are more used in indoor commercial spaces such as shopping centers and shopping malls. The size of the LED package used in the outdoor LED full-color screen has been reduced from three 546 in-line sizes to three-in-one specifications such as 3535 and 2727 per pixel, and the pixel pitch has also continued to shrink. In this way, the number of LED particles used in a full-color LED screen with the same area can be greatly increased, which will also promote the growth of LED chip shipments in this field.

Due to the maturity of LED technology and the improvement of luminous efficiency in recent years, the brightness of LED chips is also brighter than before. In the past, outdoor LED full-color screens were driven by 20mA current because the LED chips were not bright enough. Now they only need to use 10mA or even higher. Low current, the overall power saving is as high as half. In the outdoor LED full-color screen market, the main reason why users were unwilling to purchase high-resolution LED full-color screens or larger-sized LED full-color screens was the high power consumption. After calculation, the latest specifications of LED full-color screens consume less power, which can save users a lot of electricity costs. The willingness to purchase and place orders from LED full-color screen manufacturers will increase and bring more orders. .

Director Shi Honghui of Epistar, a Taiwanese LED chip manufacturer, who is in charge of RGB LED full-color screen products, said that LED energy-saving screens can attract more buyers because of their reduced power consumption. For example, in order to help the LED full-color screen dissipate heat, the early products on the market used more electric fans to help dissipate heat, which not only resulted in a thick and heavy appearance, but also consumed more power consumption. Now the new LED full-color screen, due to the use of energy-saving design, has a better heat dissipation effect, which not only greatly reduces the power consumption of the entire screen, but also saves the cost of the entire screen circuit layout. Save transportation and labor installation costs.

Such energy-saving products are also indirectly supported by local government bids, and the benefits generated are affirmed. Complete IP can help LED full-color screens to be exported smoothly. Epistar’s RGB LED and excellent red LED platform have quite strong patent strength, and there are many applicants in the international market who will require patented LED chips. Therefore, Epistar adopts LED full-color screens that are packaged and manufactured by LEDs are more likely to win the favor of traders and buyers. Many customers in the European and American markets have specified that Epistar LEDs should be used for full-color screens.

In other words, if the LED products are exported overseas, Epistar's chips are more suitable than non-patented chips. As long as LED packaging manufacturers match the anti-UV and waterproof functions well, it will be a very competitive product. Consistency evaluation of display effect after LED packaging can satisfy customers in the market. LED full-color screens must have good consistency.

The optoelectronic characteristics and quality of LED require high specifications rather than emphasizing brightness. Under the condition of low current, the brightness and wavelength have consistent changes, which are suitable for use in small-pitch products. In the current RGB LED field, Taiwan-based Everlight is considered to be a fairly good manufacturer. More and more manufacturers in mainland China are going into the field of full-color LEDs, that is, RGB LEDs.

However, because RGB LEDs have a technical threshold for the three colors to be able to match each other, many manufacturers do not perform as well as Taiwanese manufacturers in terms of red LEDs. Epistar's red LED has a leading position in the global red LED field, and has a good red LED platform to match green and blue LEDs. Epistar is currently ahead of its competitors and will continue to push itself to improve R&D energy and output quality.

In terms of overseas markets, in addition to Europe and the United States, LED full-color screens will also grow well in Southeast Asian markets, South Asian markets, and South American markets. More large shopping malls, public spaces, and airports will introduce more high-standard small-pitch LED full-color screens. The market will also more effectively solve the problem of light decay of LED full-color screens, with the Internet of Things, smart control, smart adjustment, etc., to adjust the brightness, grayscale and other parameters of the screen output under different ambient light levels. United Huiye Technology expects that in the global LED full-color screen market, the market size of small-pitch products will double that of 2015, and the business opportunities for related LED driver ICs, LED modules, and heat dissipation components are unlimited.

.