导光板散射网点的布局与出光均匀性的研究

Study on the layout and light uniformity of the scattering dots of the light guide plate

从背光模组的基本结构出发,通过理论分析确定了影响导光板散射网点排布的公式,证明了散射网点的排布规律对背光模组出光均匀度有影响。对一款背光模组商品建立了简化模型,通过光学软件TracePro模拟分析以及实验验证,证明了背光模组商品的出光均匀度还有提升的可能性。在此基础上,又重点分析了散射网点行间距的变化值,散射网点直径和散射网点初始行间距对导光板出光均匀度的影响。经过反复仿真模拟,取得了一组参数值,可以使优化后的导光板出光均匀度比背光模组商品的出光均匀度好。研究的结论可作为导光板散射网点设计的参考,对背光模组的设计具有指导意义。

Based on the basic structure of the backlight module, the formula which ensures the influence of arrangement of light guide plate scattering dot has proved that the arrangement rule of the scattering dot has an influence on the uniformity of the backlight module by theoretical calculation. A simple model of a backlight module product is built and it proves that there is possibility to improve the light uniformity of the backlight module product by simulation analysis of optical software TracePro and experimental verification. On this basis, attention has been paid to the analysis of the light uniformity of light guide plate which is influenced by line spacing variation, diameter and initial line spacing of the scattering dot. After repeated simulations, a set of parameter values is obtained, which means that the light uniformity of the optimized light guide plate could be better than the light uniformity of the backlight module product before optimize. The research finding could be regarded as a reference for the design of the scattering dot of the light guide plate, which has guided meaning for the design of the backlight module.