摘要
针对液晶显示器中直下式LED(light-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。
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 %.
出处
《真空电子技术》
2009年第6期17-20,共4页
Vacuum Electronics
