小间距LED裸眼3D显示系统可以实现超大幅面和相对较高分辨率的立体显示效果，是液晶裸眼3D显示系统的重要补充。LED子像素具有类点状特性，且子像素可以水平或竖直排列。本文分析了子像素排列方向对小间距LED裸眼3D显示系统串扰的影响。利用Tracepro仿真软件，对像素间距1.25 mm和1.667 mm两种LED裸眼3D显示系统的串扰进行仿真。仿真结果表明子像素水平和竖直排列条件下系统串扰基本相同。对于1.25 mm LED裸眼3D显示系统，实验测量结果进一步证实子像素排列方向不影响系统串扰率。因此在实际应用中，可以根据需要选择1.25 mm LED裸眼3D显示系统的子像素排列方向。

Small interval LED based naked eye 3D display system is complementary to LCD based naked eye 3D display system for its relative high resolution and large display size. The sub-pixel of LED is point-like and can be arranged in horizontal or vertical directions. In this paper the effect of sub-pixel direction on cross talk of display system is investigated. The Tracepro software is used to analyze crosstalks of two 3D display systems with sub-pixel interval as 1.25 mm and 1.667 mm, respectively. The simulation results shows 3D display systems of different sub-pixel arrangement directions have nearly the same crosstalk. This result is further confirmed by experimentally testing crosstalk of 1.25 mm LED naked eye 3D display system. With 1.25 mm LED naked eye 3D display system, its sub-pixel arrangement direction can be changed freely according to actual requirements.