OLED aimed at lighting field, the protagonist (a): dark horse appeared

Research and development of OLED for lighting purposes has long been started. Recently, the brightness and service life and other characteristics is to reach the level of lighting can be used, OLED for the possibility of rapid lighting. Due to the size of the lighting market has a huge 10 trillion yen, therefore, enterprises and research institutions outside the lighting will also R & D efforts to invest in OLED lighting. OLED not only in the field of television, will also make a difference in the field of lighting. "After the OLED lighting market started, even if our university is located in Yamagata Prefecture Yonezawa into factories, production still can not keep up with demand". Science and technology has been engaged in OLED lighting research and Development Research Institute of Yamagata University research and development prospects of Professor Chun City households two pre OLED lighting for a joy "".

2009 first product will be put on the market

Based on gallium nitride (GaN) and other elements of the "inorganic" white LED lighting, it is possible to replace the incandescent lamp, and even fluorescent lamps, almost all of the lighting, so people have high hopes for note 1), 1). And OLED lighting technology development is not known as a dark horse. However, in the face of the fact that the manufacturers are targeting the OLED practical goals, the fierce competition to develop (Figure 1).

In recent years, the emergence of such competition even ordinary consumers have begun to feel. For example, in September 2008 Konica Minolta Holdings (Konica Minolta) put on the OLED lighting TV ads. The company announced that it is working with the world's largest electronics manufacturer - U.S. General Electronics (GE) in the field of business cooperation, and will be jointly launched in 2010 with GE OLED lighting. Holland PHILPS lighting (Philips Lighting) of the German legal person is also in the same month, the end of the month, announced the launch of OLED products in 2009 plan.

Figure 1 Diagram for OLED lighting products point the day and await for it jeuro products manufacturers. Lumiotec "Phenalene" (a). In 30W, voltage 13V conditions, the brightness of 5500cd/m2. PHILPS lighting "Lumiblade" (B). Area of 50cm2, thickness of about 1.8mm. OSRAM Opto Semiconductors' Early Future '(C). The luminous efficiency is 46lm/W. The color performance was 80 (average color evaluation number Ra). Service life (brightness half-life), in the initial brightness 1000cd/m2 conditions for 5000 hours. Matsushita envisaged for auxiliary lighting products (D). Although the luminous efficiency is only 25lm/W, but the color is as high as 90 (Ra). Rom's OLED flash "B-Light Flash" (E). Brightness, when the flash is 100 thousand cd/m2, non flash for the time of 3000 ~ 4000cd/m2. Konica Minolta 5cm square full phosphorescent OLED lighting panel (f). Luminous efficiency of 60lm/W, brightness of 1000cd/m2. (b) by PHILPS as the best alternative to provide fluorescent lamp

OLED lighting has the characteristics of the previous lighting is not. Specifically, OLED is able to achieve "light" and "transparent" and "thin and light"".

As the surface is luminous, it is easy to realize the wall and the ceiling of the overall luminous Bi Zhaoming (Figure 2 (a)). Surface luminescence is also a fluorescent lamp and other lighting features. LED if the light guide plate and other optical components can also be achieved, but the OLED lighting is the light source for its own surface light, and its shape is not limited. "The most important thing is the shape can be designed at random" (lighting designer). In addition, there is hope in the case of very thin thickness, the surface will be greatly expanded to dozens of cm2 ~ 1m2.

Figure 2 surface luminescence, transparency, light and thin are the 3 major advantages of OLED lighting for the surface of the light-emitting mode, which is one of the striking features relative to other lighting technology. If we make full use of this feature, we can easily achieve the "wall lighting" (a) of the whole ceiling and wall of the room. If the glass substrate is made, and the transparent glass can be made into a transparent product, the transparent window glass can be turned into B. If you make a OLED element on the surface of a reflective display such as a magnifying glass and an electronic paper, you can easily read a newspaper, even in the dark (C). In addition, OLED lighting has a very thin and light characteristics. If the bottom plate made of flexible products, then it is expected to be like a picture of the same move to move (D). Compared with fluorescent lamps and white LED lighting, OLED lighting has some unique features (E). (b) a schematic photo of OSRAM.

Study on Electrical and high-tech development by Matsushita technical director, adjunct professor of Osaka University distinguished Da Takuya said Japan is in accordance with the white LED to replace the incandescent lamp, OLED lighting to replace fluorescent lamp positioning "to promote the development of. This is because, rather than allow the point of light to achieve the LED light-emitting surface, it is better to use OLED lighting directly to facilitate (the company).

European manufacturers are more concerned about the transparency of OLED features. Can be made into transparent products, not only can improve the decoration, but also means that in the living environment, glass and plastic are likely to be directly into the lighting apparatus (Figure 2 (B, c)). If it is used as a Light (Front), it can make up for the shortcomings of the electronic paper is difficult to see the display in the dark environment.

OLED third features of the "thin and light", is also a major advantage compared with the previous lighting. OLED light emitting components of their own thickness of less than 1 m, even with the bottom plate, the thickness is much lower than 1mm. By making OLED lighting on flexible substrates, it is possible to produce portable lighting that can be curled up like paper (Figure 2 (d)). In addition to this