增亮膜之設計與分析

Abstract

近年來液晶的製作技術漸趨成熟，液晶顯示器的使用也越來越普及，由於液晶並非自發性光源，所以必需使用背光模組，而高亮度、高均勻度向來是背光模組開發者努力的目標，本篇論文的主要目的便是在不改變光源的前提下，使用光學元件如增亮膜等設計，提升背光模組的亮度，分析各種不同幾何形狀的增亮膜的使用效益，並且更進一步地延伸至非正向增亮的設計。

Liquid crystal display (LCD) has become more and more popular with the advanced fabrication technology of liquid crystals. Because Liquid crystal can’t radiate light itself, an use of backlight module is necessary. The design goals of backlight module are the enhancement of the uniformity and the brightness by which the display quality can be improved. Nevertheless, to increase the brightness of display, an use of optical element, such as brightness enhancement film (BEF), without changing light source, has been the main trend in developing the display. The purpose of this thesis is to extensively investigate the efficiencies of a series of different-form-shaped base elements in BEF and their light guiding mechanisms by means of ray tracing analysis. It is also to provide a comparison for BEF optimization. We also extend our analysis to the design of non-straight-viewing BEF and its brightness enhancement.