In recent years, OLED has been widely used in the field of small and medium size display, and gradually entered the field of large-area display and Lighting.
As early as the 1960s, Pope et al. discovered the electroluminescence phenomenon of organic semiconductor materials. However, because of the use of single crystal germanium as the light-emitting layer, the device has a high driving voltage and low luminance, which has not attracted much attention.
In 1987, Tang et al. of Kodak Company of the United States developed a low-voltage, high-brightness organic light-emitting diode (OLED) using organic small-molecular-weight semiconductor materials. For the first time, it exhibited a wide application prospect of organic light-emitting devices.
Since then, OLED has become a research hotspot in academia and industry, and OLED lighting products have gradually entered people's daily lives.
OLED lighting industry status and development direction
As an illumination source, OLEDs featuring planar illumination have the advantages of easier realization of white light, ultra-thin light source and light source of any shape, and have the advantages of high efficiency, environmental protection and safety.
In the field of lighting, OLED can be used not only as indoor and outdoor general lighting, backlight and decorative lighting, but also to create artistically flexible light-emitting wallpapers, monochrome or color-illuminated windows, wearable illuminated warning signs, etc. product.
Due to the great potential of white OLEDs in the field of lighting, many OLED companies and internationally renowned lighting products companies such as GE, Osram, Philips, Panasonic, and China Shuguang have developed research and development of OLED lighting devices. There are already small batch products on the market.
In recent years, OLED has been widely used in the field of small and medium size display, and gradually entered the field of large-area display and lighting.
As early as the 1960s, Pope et al. discovered the electroluminescence phenomenon of organic semiconductor materials. However, because of the use of single crystal germanium as the light-emitting layer, the device has a high driving voltage and low luminance, which has not attracted much attention.
In 1987, Tang et al. of Kodak Company of the United States developed a low-voltage, high-brightness organic light-emitting diode (OLED) using organic small-molecular-weight semiconductor materials. For the first time, it exhibited a wide application prospect of organic light-emitting devices.
Since then, OLED has become a research hotspot in academia and industry, and OLED lighting products have gradually entered people's daily lives.
OLED lighting industry status and development direction
As an illumination source, OLEDs featuring planar illumination have the advantages of easier realization of white light, ultra-thin light source and light source of any shape, and have the advantages of high efficiency, environmental protection and safety.
In the field of lighting, OLED can be used not only as indoor and outdoor general lighting, backlight and decorative lighting, but also to create artistically flexible light-emitting wallpapers, monochrome or color-illuminated windows, wearable illuminated warning signs, etc. product.
Due to the great potential of white OLEDs in the field of lighting, many OLED companies and internationally renowned lighting products companies such as GE, Osram, Philips, Panasonic, and China Shuguang have developed research and development of OLED lighting devices. There are already small batch products on the market.
In the future, OLED lighting products will be developed in the direction of large size, transparency, flexibility, and arbitrarily styling. From the performance, the light efficiency will be continuously improved, the life expectancy will be shortened, and the price will be reduced. The gap in lighting technology.
The next 3-5 years is a key period for OLED lighting technology, industry and market development. The governments and enterprises in the United States, Europe, Japan, China and other countries have increased investment and R&D efforts in OLED lighting, and strive to be in the future OLED lighting industry. Take a favorable position.
At present, the development goal of WOLED devices is to make them truly a low-cost, high-efficiency, long-life planar light source. Its technological development trend is to achieve large area, high efficiency, high stability and high color rendering index under high brightness, while striving to reduce device cost.
With the strong support of governments around the world and the high attention of the industry, WOLED research and development has made significant progress. As early as 2008, UDC in the United States developed an OLED device with an efficiency of 103 lm/W, but the lifespan was not ideal and the distance from practical use was far away. In the following years, the research and development of OLED lighting technology in various countries was aimed at improving efficiency at the same time. And two indicators of life.
While OLED lighting technology is steadily improving, manufacturers are also actively promoting the marketization of OLED lighting products. Since the first OLED lighting products were launched globally by OSRAM in March 2008, various manufacturers around the world have also launched OLED lighting products to promote the transformation of OLED lighting from research and development to market. Since 2009, Philips, Osram, Lumiotec, LG, Shuguang, etc. have also launched OLED lighting products in the market.
From the perspective of manufacturers, OLED lighting has challenged the full popularity of the market.
OLED lighting future prospects
From the application field, OLED lighting products will be first applied in the decorative, indoor lighting and automotive lighting markets, and will gradually expand into general lighting and advertising, medical, industrial, automotive and other fields in the future.
According to the Display Search survey, international manufacturers of OLED lighting technology and product development, including Philips in the Netherlands, GE in the United States, Koni-ca Minolta, Lumiotec in Japan, OSRAM in Germany, and Shuguang Technology in China, have gradually entered mass production. OLED lighting applications will expand from 2016 and grow to $6 billion in 2018.
In the future, more companies, institutions and investors will enter the field, and the competition will become more intense. This will undoubtedly push OLED lighting technology into people's lives faster and promote the OLED lighting industry to achieve greater development worldwide. .
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