| 应用在大尺寸LCD背照明的LED元件设计 |
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| 引用本文： | 常军,杨东升,孙智慧,翁志成,姜会林,任涛.应用在大尺寸LCD背照明的LED元件设计[J].发光学报,2008,29(1):195-199. |
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| 作者姓名： | 常军 杨东升 孙智慧 翁志成 姜会林 任涛 |
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| 作者单位： | 1. 北京理工大学信息学院, 北京, 100081;2. 北京京东方茶谷电子有限公司, 北京, 100026;3. 中国科学院长春光学精密机械与物理研究所, 吉林, 长春, 130022;4. 长春理工大学, 吉林, 长春, 130022 |
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| 摘 要： | 传统的薄膜晶体管液晶显示器(thin film transistor liquid 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背光源系统色彩还原性好、对比度高、亮度高,其色域是传统CCFL背光源的150%以上,最近几年,RGBLED背光源已经逐渐成为大尺寸背光源发展的主要方向。大尺寸LED背光系统结构主要采用直下式和侧式结构。直下式背光源具有结构简单、光利用率高的特点,是目前大尺寸液晶显示背光源的首选。以RGBLED作为光源,通过对LED光场分布的模拟分析,提出一种新的直下式背光源的光学设计。背光源模拟表明,该背光源亮度均匀性大于80%,色差小于0.01。
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| 关 键 词： | LED LCD背光源 大尺寸背光源 直下式 |
| 文章编号： | 1000-7032（2008）01-0195-05 |
| 收稿时间： | 2007-08-25 |
| 修稿时间： | 2007-11-24 |
LED Design Using for Large Dimension LCD Backlight |
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| CHANG Jun,YANG Dong-sheng,SUN Zhi-hui,WENG Zhi-cheng,JIANG Hui-lin,REN Tao.LED Design Using for Large Dimension LCD Backlight[J].Chinese Journal of Luminescence,2008,29(1):195-199. |
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| Authors: | CHANG Jun YANG Dong-sheng SUN Zhi-hui WENG Zhi-cheng JIANG Hui-lin REN Tao |
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| Institution: | 1. School of Information, Beijing Institute of Technology, Beijing 100081, China;2. Beijing Orient Electronics Group Co. Ltd Beijing 100026, China;3. Changchun Institute of Optics and Fine Mechanics, Physics, Chinese Academy of Sciences, Changchun 130022, China;4. Changchun University of Technology, Changchun 130022, China |
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| Abstract: | Usually, CCFL is used as the back light sources for the traditional thin film transistor liquid crystal display. Now, among several light sources for LCD backlight, LED is the most competitive one. The paper analyses the performance of LED and designs a new LED for large area direct LCD backlight,which is simple and has a good performance. In order to test the LED designed by us, we design a 26′ LCD backlight finally. The simulation result indicates that the performance of the LED designed by us is good enough to meet the requirement of LCD backlight about luminance uniformity and color balance. |
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| Keywords: | LED LCD backlight large area backlight direct backlight |
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