薄型化導光板設計之研究 楔型導光板斜面之發光效率

Abstract

本研究主要是研究楔型導光板之幾何外形對發光效率的影響，利用參數化設計配合TracePro©光學模擬軟體進行導光板發光強度的模擬分析。研究結果顯示，楔型導光板之發光效率會隨著楔型角度、及厚度這二個重要參數而改變。 當我們將導光板發光區域減薄至設計目標厚度時，入射光之能量會有一定的損失，厚度不同時損失的能量亦不同，此時楔型導光板的傾斜角角度會隨著楔型部之長度等的而改變，當傾斜角趨近某個定值時，導光板的漏光率會趨於定值，此時的角度稱之為飽和角。而每個設計目標厚度的飽和角度皆不相同。 透過本研究，可以找出較佳的楔型化薄型導光板設計，達到較高的發光效率，藉以減少導光板的開發時間。

This research is to study the light reflection efficiency of a wedge-type light-guide plate by simulation software TracePro as affected by the design parameters. The results showed that light reflection efficiency of wedge-type LGP varied with two important parameters: target design thickness and wedge-angle.

With different target design thickness we also have different wedge-angle; We can adjust wedge-angle by changing the length of the wedge and find out the most effective wedge-angle.

In this research, we found out an effective design of a wedge-type LGP, which reached a higher luminous efficiency, in this way, we could reduce the lead-time of LGP development.