Alarm: OLED will be the biggest enemy in the field of LED lighting

First, the definition of OLED

Although LED has become the main development of the lighting industry, but also a new lighting technology OLED gradually emerged. OLED originally in the field of display, whether in small size portable product applications, or large size TV display, has no threat to the current mainstream LCD display. Now the lighting manufacturers to further play the characteristics of OLED transparent, thin, flexible, diversified development of emerging OLED lighting applications, the application of OLED in the field of lighting lighting in the building will completely subvert the concept in the traditional sense, the true sense of BIL (Building-Integrated-Lighting, BIPV) is very similar in concept of solar energy. The principle of LED and OLED luminescence is very close, is the use of electronic hole in the light of the combination of the area, so that the release of energy, this energy will be released in the form of photons, it will produce light. However, there are a lot of differences between the two structures, the structure of LED we are very familiar with, do not say. OLED by the electron transport layer "ELectronTransportLayer, ETL", "HoleTransportLayer HTL, a hole transport layer, luminous material layer" and "EmittingMaterialLayer EML", OLED LED, although with only a English word, but its structure is more like LCD, a glass base plate on both sides of the middle, luminescent materials, and luminescent materials organic material instead of OLED semiconductor, and at least one side electrode must be transparent. OLED technology in accordance with the use of organic thin film material, can be divided into small molecules called SMOLED OLED, polymer LED is known as PolymerOLED.

Two, OLED in lighting applications

Be too numerous to enumerate OLED lighting products, not only have the characteristics of flexible, soft, arbitrary holes in Bo Ru candy paper OLED lighting, but also maintain normal intact the shiny, even can be arbitrarily cut. The application of OLED with a light, thin, light distribution, flexible, colorful and other advantages in the lighting, breaking the traditional lighting and LED large volume, stiff, thick (when the LED plus radiation module when) impression, because with the unique characteristics of OLED, so the application can develop other lighting technology is not yet enter the. LED for ordinary users, the manufacturing cost is quite high, the corresponding LED lamps are also quite expensive. OLED lighting equipment to solve the main problem of the cost of LED lamps. At the same time, German Frauhofe scientists have studied the luminous efficiency of 100lm/ watts of OLED, while the industrialization of OLED also reached 50-60lm/ watts, low efficiency problems have been further improved. The same is the solid-state lighting of the LED, in the face of the light source lighting applications, at this stage still need to use the production of diffusion plate or light guide plate, but it will reduce its high luminous efficiency. In contrast, OLED does not need to use a diffusion plate or light guide plate, but also to achieve high luminous efficiency. On the other hand, on the technical level, LED heat, the need for heat sink, but OLED lighting is not required. The OLED lamp has high product advantages in thin transparency and heat dissipation effect, and is suitable for large area surface light source, fast switching speed, regional phenomenon and for the light source, such as a preference for warm color light source, the area of Asia, such as Japan, China and other places to love a bright white light, OLED lamp can also adjust the color with various colors of demand. Furthermore, the material is soft, easy to cut, thin shape, and low drive voltage and other characteristics, quite in line with environmental issues. However, with a variety of advantages of the characteristics of the OLED lamp why not mass production, mainly due to brightness, life and luminous efficiency of three major problems. Furthermore, the production of production must pay attention to the whole brightness uniformity and color rendering (CRI), the higher the color, the color of the vision to see the more real, therefore, CRI must be more than eighty. Although OLED still has a lot of room for improvement, but the estimated 2010~2011 years will enter small commodity market, automobile and aircraft lighting, and glass curtain early if the use of OLED lighting market in the special application developing other lighting technology is not to enter the field such as narrow space combination through Ming Zhaoming, even a small portable lighting, can also play OLED in the lighting field advantage. Now there is a new discipline called OLED optics, is used to solve the problem of optical OLED, its development will not be underestimated in the lighting field, OLED will provide different lighting new applications and new design, and other lighting technology showed a significant difference.

Three, OLED in lighting applications

OLED used in lighting applications, there are many characteristics and OLED toward the future development direction of display "have many similarities, including transparent, thin, flexible etc.. In the development of OLED towards transparency, Samsung Electronics (SamsungElectronics) has developed a penetration rate of 30%OLED display, if the property extends to the field of lighting, also just from different approaches but equally satisfactory results in light color display screen into emits white light. PHILPS leading the industry development of transparent type OLED lighting panel, and the organic Electronics Institute is also made up of 70~75% transparency window type OLED lighting OLED lighting products, the two transmittance, and has almost the same general glass, transparent window type OLED lighting products without a light in the day, the same with the general glass the window, and let the sun light to penetrate from the outside, the night will be lighting, this design combines building glass curtain wall and lighting functions. Of course, another well-known feature of OLED is thin. Even if the OLED panel glass packaging, the overall thickness of only about 1.5mm, this thin advantage in the display, such as Sony has been listed on the 11 inch OLEDTV, the thinnest part of the machine is only 3mm