Design and optimization of a partial integrated backlight module
Design and optimization of a partial integrated backlight module
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DOI：
10.1016/j.optcom.2018.07.020
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发表时间：
2018-11
影响因子：
2.4
通讯作者：
Ping Xu;Tongzheng Luo;Xu-lin Zhang;Zhijie Su;Yanyan Huang;Xiongchao Li;Yang Zou
中科院分区：
文献类型：
--
作者：
Ping Xu;Tongzheng Luo;Xu-lin Zhang;Zhijie Su;Yanyan Huang;Xiongchao Li;Yang Zou
针对我们早期开发的全集成导光板（LGP）制作工艺的局限性，即在导光板底面镀反射膜，与目前工业上成熟的镀反射膜工艺不兼容，本文提出了一种反射膜与导光板分离的部分集成背光模块（BLM）。首先，对部分集成导光板（ILGP）的关键部件上表面和下表面的单元结构进行了优化，分别为非球面半圆柱形微聚光器结构和微棱镜结构。其次，我们建立了微棱镜分布与部分ILGP尺寸之间的关系式。通过使用这组表达式，可以获得使部分集成BLM的亮度均匀性更高的微棱镜分布。最后，我们应用优化的微结构和表达式设计了一个5.0英寸的部分集成BLM。仿真结果表明，该系统的亮度均匀度达到91.14%，能量效率、平均照度和平均亮度分别是典型系统的1.62、1.63和1.29倍。部分积分BLM的性能优于典型的BLM，表明本文提出的部分积分BLM是可行的，微棱镜分布表达式具有重要的应用价值。
On account of the limitation of the fabrication technique for the total integrated light guide plate (LGP) we developed earlier with a reflective film coated on the bottom surface of LGP, is not compatible with the mature technique of coating reflective film in industry currently, in this paper, we propose a partial integrated backlight module (BLM) that the reflective film is separated from the LGP. Firstly, we optimize the unit structures on the top surface and the bottom one of the key component partial integrated LGP (ILGP), which are the aspheric semi-cylindrical micro-concentrator structure and the micro-prism respectively. Secondly, we establish the expressions that connect micro-prism distribution with the size of the partial ILGP. By using this set of expressions, a micro-prism distribution to make the luminance uniformity of the partial integrated BLM higher can be obtained. Finally, we apply the optimized micro-structures and the expressions to design a 5.0 inch partial integrated BLM. Simulation results show that the luminance uniformity reaches 91.14%, the energy efficiency, average illuminance and average luminance are 1.62, 1.63 and 1.29 times of those in the typical one respectively. The performance of the partial integrated BLM is greater than that of the typical one, which indicates that the partial integrated BLM proposed in this paper is feasible, and the micro-prism distribution expressions have important application value.