側光式LED 背光模組之導光最佳化設計

Light Guide Optimization of Edge-Lit LED Backlight Module

林俞慧(Yu-Hui Lin)

指導教授 ： 吳俊瑩

大同大學/工程學院/機械工程學系所/碩士(2010年)

摘要

液晶顯示器是目前平面顯示器中的主流，由於液晶本身不具有發光功能，需仰賴背光模組給予光源，而目前背光模組的趨勢是以LED為主要光源。為了減少顯示器的厚度，LED 光源採側入式為主。但由於LED 為點光源，導致當光線射入後，背光模組會產生輝度不均勻的現象，因此，本論文將於側入式LED 光源及背光模組之間加上一個透鏡導光體設計，尋找最佳的透鏡背光側幾何形狀，以提高均齊度為目標，進行導光體幾何最佳化設計。 本研究整合光學分析軟體LightTools 與粒子群演算法開發透鏡背光側結構形狀之最佳化設計程式，以改善背光模組的均齊度。由研究結果顯示，整合光學分析軟體LightTools 與粒子群演算法所開發的最佳化設計程式，能有效設計出透鏡背光側之最佳結構形狀，並能提高背光模組的均齊度。

關鍵字

LED背光模組 ； LightTools ； 粒子群演算法

並列摘要

Liquid-Crystal Display (LCD) is the current mainstream of flat panel display. Due to the fact that LCD does not emit light, it is necessary to equip LCD backlight module. LED backlight modules become the tendency of backlight module. In order to reduce thickness of LCD, the edge-lit technology is used for LED backlight module. It is not easy to have uniform luminance for backlight module by using LED spot light source. This study will find an optimal design of backlight side geometry of lens located between LED and backlight module to enhance the uniformity of luminance of backlight module.
The light analysis software LightTools is integrated with particle swarm optimization algorithm to optimize backlight side geometry of lens for uniformity of luminance of backlight module. From the results of this study, it can be observed that the developed optimization program can effectively optimize geometry of backlight side of lens to improve uniformity of luminance of the backlight module.

並列關鍵字

LED backlight ； LightTools ； particle swarm optimi

參考文獻

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