用于背光模组的三基色微细导光管的设计研究

Design and Research on Tricolor Micro-Optical Guidepipe Used in Backlight Module

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 side-emitting micro-optical guidepipe is presented to replace the linear light source cold cathode fluorescent lighting （CCFL） in backlight module .The guidepipe retains the advantages of designing the light guide plate but avoid the shortcomings of CCFL.Combined with RGB LED,the new backlight module can realize time mixing color and remove color filter.The tricolor micro-optical guidepipe is modeled in optical software,and the netted dots radius function is proposed by theoretical derivation to uniform light energy,then the analysis show that the structure improves color range to 150%,the efficiency is above 66% the uniformity is better than 95%,and the light transmittance of this new backlight is 12% which is twice of that of the CCFL backlight module.