具圖案印刷與微特徵設計導光板之光學性質分析

Analysis on the Optical Performance of Light Guide Plate with Pattern-Printed and Micro-Feature Design

黃順智(Shun-Chih Huang)

指導教授 ： 陳夏宗

中原大學/工學院/機械工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500330

摘要

3C產品設計朝向輕、薄、短、小是未來產業不可避免的趨勢，平面顯示器的產業也因此而蓬勃發展，液晶顯示器為其最大宗的產業，而導光板更是為其中的關鍵零組件。若是能利用電腦模擬分析輔助，找出導光板最佳化設計準則，不僅能有效節省時間和成本，亦可以提升產品品質，增加產業競爭力。
本論文以長105mm、寬27mm、厚3mm的印刷式導光板進行實驗，探討不同光源設計對導光板光學性質的影響。並利用光學模擬軟體TracePro加以模擬驗證。再進一步利用光學模擬分析，探討尺寸為長59mm、寬40mm、厚1mm，以PMMA為塑料的非印刷式導光板上，其上端微結構對於導光板光學品質的影響。由研究結果發現，上端微結構在圓點與圓點間距越小的情況下，導光板的輝度值也會提升；而微結構圓點直徑為0.3mm時，有較佳的輝度分佈效果；而微結構圓點高度在0.03mm時，能達到較高的輝度值，若採用雙面微結構設計之導光板比單面微結構導光板具有更高的輝度值。在非印刷式導光板研究中，單面微結構模擬與實驗誤差值約為2.6%~25.9%，雙面微結構模擬與實驗誤差值約為25.3%~45.6%。

關鍵字

微結構 ； 光學模擬 ； 導光板

並列摘要

Toward miniaturization design has been an inevitable trend of 3C products. With this demand the industry of display panels, in which LCD products are dominate, becomes more and more prospective. The light guide plate is an integrated part of LCD. To explore the criterion for optical design of light guide plate, computer aid engineering (CAE) may be a feasible way. With the aid of CAE, not only can be significantly improve cost, but also quality of products.
In this thesis, a pattern-printed light guide plate with dimension 105mm × 27mm × 3mm was explored through physical experiments. Then the influence of the light source design on optical performance of light guide plate was investigated. Meanwhile, optical simulation software, TracePro was employed to verify the result of experiment. A PMMA-made light guide plate with micro-feature, which have dimensions, 59mm × 40mm × 1mm was investigated. The main concerned was the influence of micro-feature on optical performance. The results of simulations reveal that the micro-feature with smaller interval of dot array will reflect the better luminance of light guide plate. In this experiment, the dot diameter with 0.3mm has better luminance distribution, and the dot height with 0.03mm gets higher luminance. If both sides of light guide plate have micro-feature, higher luminance than those of one side will be obtained. In this Study, the difference between simulations and experiments is about 2.6%~25.9% in one side and about 25.3%~45.6% in double sides.

並列關鍵字

Light guide plate ； Optical simulation ； Micro-feature

參考文獻

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