Technology is a powerful driving force for the rapid development of the LED industry, and it is also the enthusiasm and hardship of Chinese LED companies on the world stage. Under the background of technological innovation, LED companies are showing the strength of China's intellectual development to the world. Looking at the top eight LED hotspot technologies, the prospects and "Qian Jing" which is strong? What are the opportunities and challenges of the future?
Small pitch LED: technology continues to refresh, the market is ushered in an outbreak
The small-pitch LED display refers to the indoor LED display with LED dot spacing below P2.5, mainly including P2.5, P2.0, P1.9, P1.8, P1.6, P1.5, P1.2. LED display products such as P1.0 and P0.8. The appearance of small pitches has greatly increased the resolution of traditional LED displays.
Under the strong promotion of the industry, the small-pitch LED display technology in 2015 has achieved great development - the minimum point spacing can reach 0.7mm. Small-pitch LED display products with a dot pitch of 0.9mm have been mass-produced. From a technical point of view, the small-pitch LED display technology has been able to fully meet the needs of market applications, and has even been ahead of market application requirements.
The small-pitch LED has the characteristics of seamless splicing, natural color, ultra-high gradation, especially the fine and realistic color display created by ultra-high gradation, and the brightness can be adjusted to make it suitable for any display environment, plus mature Point-by-point calibration technology is quite convenient for later maintenance. Compared with the traditional LED display, the small-pitch LED display has a smaller dot pitch, a sharper resolution, and a clearer and more detailed display, which lays a good foundation for entering the room.
After two or three years of brewing, small-span LEDs are expected to usher in an explosive period in 2016. Small-pitch LED displays are currently widely used in government projects such as military, broadcasting, command and dispatch, and high-end commercial applications. In the future, when the small spacing is technically perfected and the cost is controlled accordingly, its acceptance and demand in the market will be greatly improved, and the scope of application will become more and more extensive. At that time, it will gradually transition to the civilian sector. .
LED filament lamp: technology is maturing, the market is concentrated in Europe and America
The LED filament lamp is a cross-border product with both energy-saving lighting and decorative features. For a long time, the filament lamp has suffered from heat dissipation, low power and high price, which is also the reason why it has not been favored by the market for a long time. Until the second half of 2015, the bottleneck of LED filament lamp technology was broken with the intervention of linear constant current driver IC, coupled with the gradual maturity matching of chips, packaged devices, phosphors, substrates and other materials and equipment, the development of filament lamps rose to new stage.
For example, Mulinsen has cooperated with Jingdian to develop new technical solutions and find breakthrough methods to make filaments cheaper, such as opening the bulb casing with glass, so that the bulb can achieve full-circumferential performance, and the cost structure can be the cheapest.
Lin Linliang, executive general manager of Mulinsen, is very optimistic about LED filament lamps. He believes that LED filament lamps have four major advantages: 1. Since the packaged device is a full-circumferential illumination type, the optical loss of one LED is small, so the luminous efficacy of the LED filament lamp is higher; The filament of the LED filament lamp is full-circumferential illumination, and the cost of secondary optical distribution is reduced. 3. The LED filament lamp relies on gas to dissipate heat, so the metal plastic structure is changed to glass; 4. The LED filament lamp can be easily realized by the HV line structure. Dimming function.
At present, the demand for LED filament lamps is mainly concentrated in Europe and the United States, mainly used to replace incandescent lamps. In the future, consumers who need “energy-saving, full-angle, retro†performance will account for the majority, which will bring business opportunities to large-scale enterprises. The function of LED filament lamps in decoration will also be more widely concerned, and enterprises need to meet the market demand for R&D and production.
Develop a tentative UV LED into a new blue sea
The market demand is weak, the LED industry presents product homogenization, and the price competition is fierce. The search for high-margin segmentation market has become the only way for LED companies. The UV LED market is one of the blue ocean markets, and the prospects are immeasurable.
French market research company Yole Développement's research report shows that by 2017, the UV LED market will reach US$270 million, which is more than 1/3 of the entire UV light source market. The compound annual growth rate can reach 43% within five years, thus forming UV. The situation of mercury vapor lamps in court.
UV LED is mainly divided into UV-A (320~400nm), UV-B (280~320nm) and UV-C (200~280nm), which are used in curing equipment, money detectors, etc., medical/biological fields. In the field of therapeutic instruments and analytical instruments, sterilization. At present, UV A accounts for 90% of the UV LED market.
The shorter the wavelength, the lower the luminous efficiency of the ultraviolet LED, the higher the preparation difficulty and the more expensive the price. The UV-B and UV-C LEDs emit only 10%-20% of UV-A, and the price is about 10 times that of UV-A LEDs. Due to the high threshold of UV LED technology and the lack of maturity of chip and packaging technology, the industrialization process of UV-B and UV-C is relatively slow.
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