摘要
传统的薄膜晶体管液晶显示器(thin film transister crystal display,TFT-LCD)通常采用冷阴极荧光灯(cold cathode fluorescent lamps,CCFL)作为背光光源。相比较而言,由于发光二极管(LED)TFT-LCD背光源系统具有色彩还原性好、对比度高、亮度高等优点,近年来应用于大尺寸TFT-LCD的LED背光技术取得了长足的进步。当前应用于大尺寸TFT-LCD的LED背光源主要有两种:RGBLED背光源和白光LED背光源。大尺寸的LED背光系统结构主要采用直下式和侧式结构。本文将对这几方面进行系统阐述,并对大尺寸TFT-LCD的LED背光系统的应用前景进行预测。
Cold cathode fluorescent lamps （CCFL） are conventional backlight units for thin film transistor liquid crystal display （TFT-LCD） monitor and TV. Compared with CCFL backlight unit, LED backlight unit has a lot of advantages, such as good color reproduction, high contrast, high brightness, and so on. In last several years, LED backlight technologies applied in large-sized-TFT-LCD have been making a great progress. This novel backlight technology will be reviewed in this paper. Red, Green and Blue Light Emitting Diodes （RGB LED） can be used as the backlight as well as white LED. Then direct backlight structure and side backlight structure are also introduced .In conclusion, LED backlight is deduced to be the most perfect backliqht for large-sized-TFT-LCD in the future.
出处
《现代显示》
2006年第8期59-63,58,共6页
Advanced Display
