本文研究了侧入式LED 背光源导光结构的仿真及现实因素对背光源出光效果的影响。首先分析了导光结构的主要功能、特性以及相关理论基础；之后针对其出光特性提出一种简化而准确的仿真模型；最后结合生产实践，重点分析了LED 光源与导光板的结构匹配，导光板薄形化处理，以及网点优化设计等关键因素变化对背光源出光效果的影响，并进行了实验验证。该研究对导光板的结构参数提出了合理的优化设计需求，对生产具有一定的实际指导意义。

The simulation of the light-guide structure of the edge-lit LED backlight source and the influence of the practical factors on the light source are studied. Firstly, the main functions and characteristics of the edge-lit backlight light structure are briefly analyzed, and the corresponding theoretical basis is provided. Then, a simplified and accurate light guide structure simulation model is proposed based on the optical characteristics of light-guide structure, and the model is simulated with the optical software of TracePro. Finally, an in-depth discussion and analysis on the characteristics and influences of light-guide structure of the LED backlight source is presented with the actual processing practice. The simulation results are verified by corresponding experiments. The influence of the essential factors on the effect of the backlight source, including the matching between the light guide structure and the LED light source, making the light guide plate thinner and designing dot scheme for high efficiency and good uniformity, is emphatically analyzed for LED backlight system. This research may offer some practical significance, for the reason that it proposes a reasonable and optimized design for light guide parameters and alleviates potential mistakes in the process of actual production.