LED lighting technology development trend

Although the development of LED lighting continues, there is still a large gap between its product's penetration rate and light efficiency and theoretical and target values, and there is still a need for major breakthroughs in technology. As a combination of multidisciplinary technology and modern information technology, the development of LED lighting technology presents eight trends.

[Energy efficiency improvement of LED lighting whole lamp]

The entire LED energy efficiency at this stage consists of six parts: internal quantum efficiency, chip light extraction efficiency, packaging efficiency, phosphor excitation efficiency, lamp efficiency, and power supply efficiency. Under certain boundary conditions, the theoretical value is 58%. Currently, the energy efficiency of better lamps and lanterns is only 30%, and there is still a lot of room for advancement. All of the above six items must reach 90% or more, requiring technical breakthroughs.

[Enhancement of Light Color Quality and Color Rendering Characterization of LED Light Sources]

To improve the color quality of LED light sources, we must use RGB multispectral combination, that is, multi-chip combination or multi-primary phosphor combination, to achieve reasonable LED spectral distribution SPD, but also to control the main light color parameters, such as color tolerance, glare , photoelectric blinking and so on. LED light source color rendering characterization is a long-term issue of debate, LED light source can achieve a flexible combination of multi-spectrum, using any kind of parameter color rendering characterization, are all defective, the ultimate characterization may be in the form of a spectrum. Some experts also proposed using color gamut index (GAT) and CRI to characterize the reduction of light to color.

[LED lighting innovation technology]

LED light sources and lamps are currently the top priority of the LED lighting industry. Technically, it is necessary to speed up the innovation of lamp styling and control functions. Specifically, the appearance and shape of the lamps and lanterns, the size and size are flexible, the light quantity is adjusted on demand, the light color is flexibly changed, and the installation position is Feel free to wait.

【Intelligent Lighting R&D and Application】

The technical characteristics of intelligent lighting include open, distributed, remote telemetry, compatibility, interactivity, etc. It is a deep integration of lighting technology and information technology. In terms of technology, it involves a wide range of key technologies, such as the interface integration between the light module and the drive power. At present, there is no need to have a unified basic standard. It is necessary to conduct research, development, and application based on actual needs.

[Extension of LED Lighting Applications]

Promote the application of non-visual lighting systems, such as health care, eco-agriculture, LED visible light communication and infrared LED and UV LED applications, rich in content, application technology is rapidly developing. LED display application technology focuses on the development of high-definition, small-pitch display and high-definition flexible display technology to achieve high-definition LED TVs and high-definition foldable, wearable display devices.

[Study of narrow-spectrum LED devices]

The narrow spectrum of a single LED can realize the spectrum flexibility of the combined LED, and can realize a larger color gamut space in the LED display, which is a very large application field. The technology for realizing the narrow-spectrum LED device has to break through from the material extension.

[White LED devices will gradually turn to RGB combination mode]

The use of RGB combination of white light theoretically has higher light efficiency, and to facilitate the lighting dimming, color adjustment, color rendering, etc., technically to focus on improving the efficiency of green LED light, RGB combination may become the mainstream of general lighting.

[Natural lighting will be the ultimate goal]

With the development of multi-spectral LED lighting, people will pay more attention to energy-saving lighting, health lighting and ecological lighting. Using similar solar lighting will be the best choice, that is, natural light lighting, using LED technology can be achieved, but to solve many technical problems .

The development space for LED lighting technology is still very large. Technically, it is still necessary to focus on the improvement of energy saving and power. While actively promoting the innovation of lamps and lanterns in the application, it is necessary to continuously expand the application areas such as intelligent lighting, non-visual lighting and high-definition display; to achieve the ultimate goal in technology, namely natural light lighting, to provide people with energy-saving, healthy and comfortable lighting surroundings.