Philips Lumileds produced a 46 inch, 12mm thick end of the light type LED backlight

American Philips LumiLEDs Lighting developed a 46 inch (diagonal 117cm), thick 12mm backlight LED backlight. The company vice president Yamada Fanxiu said "the power within the next 3 years LED will be increased to two times, and said back light field with large size and thin LED on the LCD panel, face illumination type than the direct type is more promising, the company will continue to make efforts to improve efficiency and reduce costs. The back light has been on display at the LED Technology Conference 2008 in Tokyo in June 3rd. The demonstration, the use of 46 inches back light unit, the unit is equipped with a top and bottom of the flux of 9200 LM high power LED "LUXEON RebEL", through the light guide plate to achieve the surface light. Assuming that the transmittance of the liquid crystal panel is 8%, when the central brightness of the liquid crystal panel is 450cd/m2, the performance of the backlight unit is as follows: the rated power consumption is 180W, and the light source efficiency is 70lm/W. Color temperature 7700K, color range of NTSC to 77.5%. If the brightness is adjusted according to the image, the power consumption is 130W. In addition, by optimizing the configuration of LED and other means, the number of LED can be reduced to 96, the thickness can be reduced to less than 10mm. By 42 inches to calculate the product, the number of LED is 80, the actual power consumption of 110W. In addition, can also be achieved by the end face of the largest 70 inch product. "In the next 3 to 5 years, the efficiency of high efficiency and high power white LED increased from 75lm/W to 150lm/W, the driving current from 350mA to 2A, and increase the productivity to two times, the cost can be reduced to the current 1/20, you can make the product into more market segments. It's not impossible".

Source: Nikkei BP