因背光模組(Back Light Module, BLM)中之導光板為液晶顯示器背光模組的重要元件,可控制液晶顯示器之光學輝度值大小與均齊度分佈,故要增加液晶顯示器光學輝度及均齊性,就必須針對導光板微結構作幾何設計及光學分析 本研究主要以導光板之半圓球微結構及V溝微結構設計為主,同時針對半圓球微結構及V溝微結構對光學性質的影響作完整及有系統之分析。本研究採用方法是對半圓球微結構之深度和間距,及V溝微結構之密度、角度和深度來探討不同幾何參數設計條件下,對光學輝度及均齊度影響之情況。歸納出相關連之背光模組光學設計規則,同時半圓球微結構具有其3D 軸對稱之特性,未來可能取代網點及V-Cut 成為微結構主流圖樣,因此值得研究探討找出與光學之關連性,可提供業界光學設計之參考。
Because light guide plate is one of the most important components of LCD backlight module and control the optical brightness value and uniformity distribution of LCD. Therefore, in order to improve the LCD display efficiency and brightness uniformity, we must be aimed at designing the micro-structures on light guide plates. The design of the spherical patterns and V-cut micro-structure on the light guide plate is the import point of this study, and we also have the intact and systematic analysis. The study aimed to evaluate the influencing parameters of geometrical shape of spherical patterns, including depth and pitch, as well as the V-cut density, V-cut angle, V-cut depth to the luminance value and uniformity of optical characteristics. Based on the design of the light guide plate analyzed results, spherical patterns have the 3D space symmetrical characteristic. The design may supersede the dot pattern and V-cut micro-structure to become the design in the future. Therefore, it is worthy to research the correlation between the optics, and the references of optical design in the industry.