提出了一种用于背光模组的三基色微细导光管的设计方案。该导光管结构可取代传统的线光源冷阴极荧光灯管(CCFL),并保留其导光板设计成熟的优点,在保证环保、提高对比度的同时将色域提高150%。对三基色微细导光管在光学软件中进行建模,并理论推导能够均光的网点半径排布规律,将该微细导光管与三基色LED光源相结合实现时间混色,省略彩色滤光片,提高光能利用率及空间分辨率。模拟实验表明,该微细导光管的光能利用率达66%以上,亮度均匀性达95%。取代CCFL后结合时间混色技术实现色序法显示,该新型背光源的总体光透过率为12%,较传统的CCFL背光源光透过率提高一倍以上。 A design scheme of trichromatic micro-light pipe for backlight module is proposed. The light guide structure can replace the traditional CCFL and keep the advantages of its light guide plate design, and increase the color gamut by 150% while ensuring environmental protection and improving contrast. The trichromatic micro-light pipe is modeled in the optical software, and the radius distribution of the half-dot can be deduced theoretically. The micro-light pipe is combined with the trichromatic LED light source to realize the color mixing, omit the color filter , Improve light utilization and spatial resolution. The simulation results show that the light utilization rate of the microscopic light guide tube is above 66%, and the brightness uniformity is up to 95%. In place of CCFL, color mixing is used in combination with time-mixing technology to display the overall light transmittance of the new backlight being 12%, which is more than double that of the conventional CCFL backlight.