OLED lighting applications grow fiercely
Updated : 2018-08-28

 OLED lighting is a new solid state lighting technology. Its glare free, light and flexible characteristics make the technology widely used in various fields. Many international factories that have already won business opportunities in the LED market also regard OLED technology as an important investment. In recent years, there have been more important gains in the process.


  The hot war between OLED and LED is not only shown in the display market, but also very hot in the lighting market (Fig. 1). OLED is a surface type light source. Its spectrum is close to natural light. It has the characteristics of non glare (Non-Glaring) and light and flexible. Therefore, it is regarded as the new generation lighting technology.

    OLED lighting is a high energy efficiency solid-state lighting technology, which is listed later than LED lighting. Although both OLED lighting and LED lighting also represent high energy efficiency and long service life, the cost of LED is still far below that of OLED lighting.


  According to the IEK research data of the Research Institute, the global lighting market will reach US $158 billion 500 million in 2021. UBI Research's OLED lighting analysis report also shows that the global OLED lighting market was $114 million in 2016 and will grow to $1 billion 600 million in 2020, and the average annual growth rate (CAGR) from 2017 to 2025 is up to 66%; the car lighting market will grow from $3 million in 2016 to 2019. 296 million dollars, and by 2020, it will be more than $821 million, and the market will grow quite rapidly.


  Despite the high cost of OLED technology in the area of display or lighting, permeability is difficult to improve. This cost difference is also difficult to be leveled out in a short time. However, due to its glare free, light and flexible characteristics, OLED lighting has attracted large international factories and governments to invest a lot of resources in R & D. The US Department of energy (DOE) predicts that OLED lighting will be in line with LED's cost, efficiency and life indicators after 2020.


  OLED lighting applications will be introduced first.


  OLED lighting is a new solid state lighting technology. It has no glare characteristics and can be illuminated in the dark for a long time without causing fatigue. Although there will be no large-scale growth in a short period of time, it is expected that the OLED lighting market will grow to $2 billion 500 million in 2027, creating an innovation for the global lighting market.


  Khasha Ghaffarzadeh, consultant of IDTechEx, points out that the application structure of lighting market is very extensive, which is full of various technology combinations and different customer needs. There are different levels of demand for energy efficiency, service life, light intensity, color temperature and design, including home, office space, industrial plant area, store, outdoor environment and so on.


  According to the division of the field, we will see that the indoor application fields such as hotels and shops will first be imported into OLED lighting. In view of the fact that in 2015, BMW launched the news of importing OLED lighting in car lights, the introduction of vehicle lighting is also very optimistic. However, life and reliability still need to be improved. Once the cost is reduced and the service life is extended, residential, office and outdoor can gradually start importing OLED.


  No heat / ultraviolet OLED outdoor lighting has a head


  The light and flexible characteristics of OLED lighting enable its application design to be more flexible and diverse, and can use relatively few materials. In addition, OLED lighting does not emit heat and UV free properties. It is very suitable for outdoor lighting (Figure 2). Ultraviolet rays from artificial sources may cause damage to human skin and may attract insects, but the OLED light source does not have ultraviolet light, so it can prevent people from being harassed by mosquitoes when they are used outdoors.


     IDTechEx predicts that the OLED lighting market will grow to $2 billion 500 million in 2027. However, growth will be very slow before 2020. In particular, LED lighting has been successfully introduced into the market, and the technology, cost structure and supply chain have been greatly improved, and the huge cost gap between LED and OLED has been opened up. Although OLED lighting manufacturers such as Konica Minolta and LG have gained important technological gains in recent years, the performance gap has not been reduced too much.


  Therefore, the primary challenge for OLED lighting is to make market differentiation. Many companies such as OSRAM (Osram) and PHILPS (Philips) have been successful in the field of LED lighting, and their business is growing. OLED's R & D plan is a multi-party investment strategy of these companies, and is also a way to stand out in the increasingly popular LED market.


  OLED lighting costs fell by 30%, 2018 to fifty thousand monthly capacity.


  OLED lighting has been unable to popularize because of its high manufacturing costs. So the Institute proposed a roll to roll production solution to reduce the cost by at least 30%. Because of the long-term efforts of Taiwan manufacturers in the aftermarket, OLED lighting is expected to give priority to the introduction of applications in the aftermarket.


  Hu Jiping, deputy director of the Institute of electronics and photoelectricity, pointed out that the development of OLED lighting has been more than ten years, but the high cost has been the main reason why the OLED lighting can not be further popularized. For this reason, the Engineering Research Institute has built a roll to roll production solution for four years. Compared with the traditional OLED, volume to volume production solutions can reduce the cost by more than 30%, although it is still more expensive than the LED lighting scheme, but as the volume of volume to volume production scheme is up to 80%, and 50% of the materials are used in Taiwan area material, it is expected to reach fifty thousand months of capacity by the end of 2018. Therefore, in the future, the cost of equipment depreciation and volume production capacity will continue to improve, and the cost is expected to be lowered again.


  Wu Zhiyi, director of the Institute of electronics and photoelectric Systems Research Institute, also pointed out that with the progress of the OLED materials and process, the cost of OLED technology has fallen sharply and the related applications are more plural. The OLED lighting development energy and test production strength of the Institute of engineering, including customized design ability with customer demand, and the whole line roll test and measure production scheme to solve the cost problem, successfully import high-end FOLED products to overcome the soft substrate transmission, volume to volume integration and soft light source system design for the volume to volume process. The issue of high degree of difficulty. It also helps the industry to make OLED lighting customize and innovate to spread to new field applications.


  The technology has been cooperating with 14 design lamps and lanterns manufacturers, 15 schools and 9 Commercial transfer fields in Taiwan. This year, it has been co operating with 6 manufacturers, including Di Bao, Jing Chang, Asia, emperor, Bao Chuang, Zhang Malong Chen Yulin, and so on, to speed up the OLED in Taiwan area. The driving of lighting.


  Chen Fangzhong, Professor of Optics and electrical engineering at Jiaotong University, pointed out that roll to roll process is the ultimate goal of industry, education and research. At present, the products of OLED display are manufactured by traditional OLED process rather than roll to roll process. Although the traditional OLED process can be more elaborate to meet the application requirements of high-end displays, the traditional process can not meet the low cost requirements such as lighting. After the volume production technology is mature in the lighting industry, the future OLED display is also expected to develop towards the coil to roll process.


  The rear lamp market has the first opportunity


  Because of the low glare and flimsy and flex features of OLED lighting, it is very suitable for the application of car lights. At present, the Audi (Audi), BMW and Mercedes-Benz car factory have also been introduced into the rear light of the car with OLED. Hu Jiping further share, in the global car market, more than 70% of the city is taken by the Taiwan manufacturers, so OLED lighting in the car market, Taiwan manufacturers have a great advantage, production capacity has also have.


  With the development of OLED materials and processes, the cost of OLED technology has dropped dramatically, and the applications are more diverse. Hu Jiping said that if OLED lighting is to be further imported into the car market, it will be restricted by the standard of vehicle use, and the requirements for reliability will be higher. It is estimated that in 2022, we will see OLED lighting in a large market in the front of the car.


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