LED technology into the LCD backlight

Recently, international LED and semiconductor lighting exhibition (LED Expo 2005) and FPD China 2005 in Shanghai at the same time. According to the organizers of the Shanghai optoelectronics industry association secretary general Tang Guoqing introduction, this is the first LED and FPD joint exhibition. LCD backlight module, is one of the most popular applications in the past two years, LED, but also one of the focus of attention in the exhibition. As everyone knows, LED has been very mature application in the mobile phone color LCD backlight, LCD backlight and as a large size, still just started. The traditional LCD back light source is CCFL (cold cathode fluorescent lamp), compared with LED backlight source has advantages of good color reduction and energy saving, long life, low pollution, it can show more bright colors, the color gamut is up to 108%. Because LED has these advantages, more and more manufacturers begin to develop large size LED backlight. According to the China institute director Professor Fang Zhilie light, currently has LED backlight Agilent and MITSUBISHI cooperation made 34 inch LCD TV, SONY and Samsung launched LED backlight LCD TV 40 inches and 46 inches. The exhibition of the industry generally believe that LCD backlight LED applied to the large size of the technology is facing brightness, heat, light distribution and other problems, but the main obstacle in the LED size LCD backlight source at present is the price. According to the Shanghai Stanley Electric Co., Ltd. Sales Department of Lin Yi introduction, Stanley 15.1 inch LED backlight will be mass-produced in the middle of next year, the price of about $150, more expensive than the traditional CCFL about. He believes that LED backlight is mainly positioned in the high-end LCD TV products, in order to replace the traditional backlight, at least 5 years. Professor Fang Zhilie believes that from the beginning of this year will enter the large screen LED backlight and CCFL competitive period, estimated to around 2008 LED backlight in the application of large size LCD screen will dominate.