Must know! 8 major trends of LED technology +23 new material technology development

According to the China Electronics News reported that China's semiconductor lighting industry in recent years in terms of output, output value and technical indicators have made breakthrough development. 2014, China's semiconductor lighting source, lamp output value of 95 billion yuan, an increase of 43.9%. Among them, LED lighting products exports $9 billion, an increase of 50%, LED lighting penetration rate of 20%. In the first half of 2015, LED lighting products grew by about 23% year on year, from 1 to May exports of $4 billion 80 million, compared with the same period last year.

From the latest developments in the global semiconductor lighting, the global LED device light efficiency laboratory level has exceeded 300lm/w, the level of industrialization reached more than 150lm/w, LED lighting efficiency of the laboratory level of 200lm/w. U.S. SSL plan to adjust the device to achieve the level of optical fiber efficiency of 250lm/w, LED lighting efficiency level of industrialization of 200lm/w. In short, there is a big gap between the theoretical value and the target value of LED lighting products, such as the penetration rate, light efficiency, and so on.

LED lighting technology presents eight trends

LED lighting technology involves a wide range of multidisciplinary technology and modern information technology, the development of eight major technical trends.

The first is to improve the efficiency of the whole LED lighting lamp: LED the whole lamp energy efficiency is composed of six parts: internal quantum efficiency, chip light efficiency, packaging efficiency, phosphor excitation efficiency, lamp efficiency and power efficiency. Under certain boundary conditions, the theoretical value is 58%, the current good lighting efficiency is only more than 30%, there is a lot of room for improvement, these six are to reach more than 90%, the need for technical breakthroughs.

The two is to improve the quality of color LED light and color characterization value: improve the quality of LED light source, using RGB multi spectral combination, namely multi chip combination or phosphor combination, achieve LED spectrum distribution of SPD is reasonable, but also control the color of the main parameters, such as color tolerance, glare, photoelectric flashing. LED light source color characterization is a long debated topic, flexible combination LED light source can realize multi spectral color, characterized by any kind of parameters, are defective, the ultimate characterization may be based on the spectral form. Some experts have proposed the use of color gamut index (GAT) and CRI together to characterize the color of light reduction.

Three is the innovative technology LED lighting: LED light source, lamps at present is the priority among priorities of the LED lighting industry, to speed up the lamp and control function of the technical innovation, in particular, the size of the creative lamp appearance shape flexible, light, light and flexible regulation according to the need change, installation position at.

Four is to carry out the development and application of intelligent lighting: intelligent lighting technology features include open, distributed, remote control telemetry, compatibility, interactivity, etc., is the depth of lighting technology and information technology integration. Covering a wide range of technology, the key technology is the interface between the light emitting module and the drive power integration, etc., there is an urgent need to have a unified basic standards, according to the actual needs of research and development and application.

The five is to expand the application field of LED lighting: widely applied in non visual lighting system, such as health care, ecological agriculture, LED visible light communication and infrared and ultraviolet LED LED application, which is rich in content, is the rapid development of application technology. LED display application technology focus on the development of high-definition small screen and high-definition display technology, high-definition LED TV and high-definition folding, wearable display device.

The six is the study of narrow spectrum of LED devices: the combination of LED spectra of single LED flexible narrow spectrum, can achieve greater color gamut space in LED display, is a large field of applications, to achieve a narrow spectrum of LED devices to achieve a breakthrough in materials technology extension.

Seven is the white LED devices will gradually shift the RGB combination: with higher luminous efficiency white RGB combination theory, and convenient lamp dimming, color, tone color, technology to focus on improving the green LED light effect, RGB may become the mainstream general lighting.

Eight is the natural lighting will be the ultimate goal: with the development of LED multi spectrum lighting, people will pay more attention to energy conservation and ecological and health lighting lighting, using similar solar lighting will be the best choice, namely, natural lighting, the use of LED technology can be achieved, but to solve many technical problems.

LED lighting technology has great room for development, but also need to further improve the efficiency of the whole lamp and light quality. Actively promote the lighting innovation at the same time in the application, to expand the application fields, such as intelligent lighting and non lighting and visual HD display; in technology to achieve the ultimate goal, namely, natural lighting, lighting energy saving, healthy and comfortable environment for people.

Development trend of new luminescent materials

At the present stage, the technical development trends of the three kinds of nanometer luminescent materials may be the light source of the future.

Quantum dot luminescence

In recent years, the development of quantum dot luminescence technology is a new technology in the field of luminescence.

Quantum dots: LED quantum dots (QD) is made of nanotechnology, QD particles in general 2nm ~ 12NM, quantum dot light emitting body composed of light emitting semiconductor, nuclear shell, organic ligands, such as light emitting nuclear CdSe (CdSe) QD particles, its advantage is that it can emit visible light or infrared. Light stability, internal quantum efficiency can reach 90%, and LED with warm white color is rich, very bright.

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