Analysis and Design Optimization of the Light Guide Plate of Backlight Module

• Main Authors: b.h.Wu, 吳秉和
• Other Authors: s.n.Bai
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/26668755776228342284

碩士 === 建國科技大學 === 電子工程系暨研究所 === 101 === The optical properties of the commercial backlight modules were simulated by the FRED optical software in this study. The illumination intensity of the backlight modules was measured by illuminometer. According to carefully study and analysis, and compared with the microstructure of the light guide plate of backlight modules, we design a set of microstructures of the light guide plate. The optical efficiency and uniformity of the light guide plate were improved after the comparison between actual measured results and the simulation results. The major parts of the design, including the various shape, size, distance and quantity of scatterers, are appeared in the light guide plate. The designed microstructures were arranged in the different places of light guide plate. These microstructures were used to adjust the path of light within the light guide plate so as to produce the effect of refraction and total internal reflection. It can provide uniform and sufficient brightness of the optoelectronic components. In this study, it was found that the FRED optical software can effectively design an optimized microstructure, so that the light guide plate to achieve uniform light extraction efficiency and improve the brightness. Therefore, it can make the products to cost down, shorten the time to market, and improve the market competitive.