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| LED背光源亮度均匀性改善方法 | |
| 引用本文： | 刘钱飞,张小宁,刘纯亮,丁兴隆.LED背光源亮度均匀性改善方法[J].真空电子技术,2009(6):17-20. |
| 作者姓名： | 刘钱飞 张小宁 刘纯亮 丁兴隆 |
| 作者单位： | 1. 西安交通大学,电子物理与器件教育部重点实验室,陕西,西安,710049 2. 西安交通大学,电子物理与器件教育部重点实验室,陕西,西安,710049;彩虹集团技术中心,北京,100085 3. 彩虹集团技术中心,北京,100085 |
| 摘 要： | 针对液晶显示器中直下式LED（1ight—emitting diode）背光源边缘亮度较低的问题，本文提出了一种LED非均匀排列提高背光源亮度均匀性的方法。在等间距排列的基础上，通过测量单颗LED的亮度分布函数，计算出水平和垂直方向上的LED不等间距排列距离，并对该距离进行优化调整。非均匀排列的LED背光源亮度均匀性仿真计算结果表明，背光源的全屏亮度均匀性可达到90％以上。 |
| 关 键 词： | 液晶显示器 LED背光源 亮度均匀性 非均匀排列 |
Improvement for Lightness Uniformity of LED Backlight |
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| LIU Qian-fei,ZHANG Xiao-ning,LIU Chun-liang,DING Xing-long.Improvement for Lightness Uniformity of LED Backlight[J].Vacuum Electronics,2009(6):17-20. | |
| Authors: | LIU Qian-fei ZHANG Xiao-ning LIU Chun-liang DING Xing-long |
| Affiliation: | LIU Qian-fei, ZHANG Xiao-ning, LIU Chun-liang, DING Xing-long (1 Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi ＇ an J iaotong University, Xi＇an 710049, China; 2. Technology Centre of IRICO Group, Beijing 100085, China) |
| Abstract: | A non-uniform arrangement of light-emitting diode （LED） to improve the lightness uniformity of LED backlight is proposed for the low lightness on the edge of the direct LED backlight in liquid crystal display. Based on the uniform arrangement, the lightness distribution function of a single LED is measured. Then the distance of LED in horizontal and vertical direction of non-uniformity arrangement is calculated and optimized. The results of calculating the lightness uniformity for non-arrangement of LED shows that the lightness uniformity can be achieved above 90 %. |
| Keywords: | LCD LED backlight Lightness uniformity Non-uniformity arrangement |
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