FPDI launched the green lighting area of major companies LED products into a bright spot

October 29, 2008 opening of the "FPD International 2008" (as of 31, held in the Pacific Yokohama Convention and Exhibition Center) this year arranged a professional display lighting. In the "green package" change Home Furnishing and street theme exhibition, Matsushita, TOYOTA, OSRAM, Asahi synthetic rubber, Cooler Master (CoolerMaster), LED and LED exhibited their association to promote lighting related products, Japan Lumiotec exhibited OLED lighting apparatus (Figure 1). Although FPD International is the display show, but the OLED panel and LED backlight and other display industry is very concerned about the new light source, enterprise exhibition area packed with visitors.

Matsushita Electric display LED lighting appliances can be from 2500K (bulb color) to 7000K (fluorescent color) (Figure 2) to change the color temperature. The color of an incandescent bulb, the color of the office lighting, and the color of the sky, etc., can choose the appropriate color temperature in accordance with the work or work. Because it is a reference to the show, so there is no public detailed technical indicators. Through the combination of different color temperature of white LED, respectively, control and mixing of color, you can get the desired color temperature. LED lighting module in the design of the heat dissipation problem, to ensure 40 thousand hours of life.

TOYOTA synthesis shows the manufacturing process of LED lighting fixtures. The production of LED chip, LED chip embedded packaging, printed board packaging, as well as the printed board installed on the LED lighting equipment, through the physical display of the manufacturing process (Figure 3).

Asahi rubber shows a compensation for LED subtle color deviation, get the desired luminous color Cap effect. The company's technology is to be doped with silicon dioxide coated in blue and other LED. Although the wavelength and luminosity of the LED has been getting smaller and smaller, but it is often heard that such views: for example, the use of multiple lighting side by side LED, the deviation will be more obvious. To this end, the company for the luminous wavelength and luminosity, prepared dozens of Cap. The display uses a slightly different blue light emitting wavelength LED, the use of the same specifications of the Cap light-emitting and the use of the optimization of the Cap light was demonstrated (Figure 4). In addition, due to the increasing use of surface mount LED, it is also ready to flake Cap (Figure 5).

OSRAM and Cooler Master are on display for street lamps and other uses of outdoor LED lighting module. 8 such modules are assembled into an outdoor light (Figure 6). Each module uses 16 OSRAM white LED. The power consumption of each module is about 23W, luminous flux is 960lm. In addition to the power supply module of the power consumption of each module that is part of the power consumption of 18W. The back of the module is provided with a radiating component which uses a heat sink and a heat pipe. Equipped with white LED for the lens with the name "DRAGON (Golden)" products. Power consumption is slightly higher than 1W. The luminous efficiency is 55lm/W. The lens is improved according to the outdoor lighting. The white LED is just below the light is weak, and the white LED side direction of the light is strong, designed into an elliptical surface.

LED Lighting Association uses billboards and images to showcase the LED lighting fixtures and implementation cases. Among them, the life expectancy of the relevant LED board is very interesting - although the LED long life, but if used at a very high temperature, it can not reach the specifications of the life expectancy (Figure 7). Moreover, it is generally said that the LED life of 40 thousand hours, and not in the actual conditions of the use of light to measure the life of 40 thousand hours. Instead, the LED life of the actual operating temperature is predicted by the accelerated test under the condition that the temperature is higher than the actual temperature, and the LED value is reduced.

The Lumiotec display of the OLED lighting device focuses on the unique characteristics of the OLED with only 8 of the thickness of the 2.3mm and the surface emitting (Figure 2). The luminescence of red (R), green (G) and blue (B) can reach the peak of the broad spectrum characteristics, but also improve the color rendering. MPE (multi-photon (emission)) technology is used to produce multilayer stacked light emitting layer, which uses three layers of RGB with different luminescence layers. The technology can further increase the number of layers, if the increase of different wavelengths of the other OLED layer, but also can be added to the three layers of the superposition of insufficient light wavelength.

Figure 1 exhibition area

Figure 2 shows Matsushita electric. From top to bottom for the light bulb, fluorescent color, clear sky color

Figure 3 TOYOTA synthetic display

Figure 4 shows Asahi rubber. From top to bottom for the existence of the 5 colors of the blue LED after the appearance of power, the use of 1 kinds of Cap into a white light, the use of the best blue LED Cap into a white light. The next section of the LED almost can not see the deviation

Figure 5 mounting surface mounted LED with a sheet Cap

Figure 6 street lamps assembled using Cooler Master's outdoor LED lighting module

Figure 7 display panel of the LED lighting propulsion association. The following figure shows the relationship between bonding temperature and life

Figure 8 Lumiotec display

Source: Nikkei BP