薄型化導光板網點光學設計之最佳化

Optimum Optical Design of Thinned Light-guide Plate Pattern

林正杰(Chen-Chieh Lin)

指導教授 ： 陳文瑞

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2012年)

摘要

近年來由於TFT-LCD廣泛被應用在各個領域的顯示器上，使的生活因為有螢幕而充滿多采多姿加上綠色環保的風行也讓顯示器朝輕薄節能的方向設計，但由於LCD面板本身不發光所以必須由背光模組提供充足的亮度與分佈均勻的光源才能使其正常的顯示影像，因此背光模組也就成了液晶顯示面板的重要零組件之一。也因為環保意識的增加發光源部分漸漸的改採用LED(發光二極體)來取代傳統的CCFL(冷陰極管)，這樣不但可以減少汞的汙染也可以節省能源的浪費。
本論文主要探討的方向會以18.5”電腦螢幕為基礎研究如何將背光模組薄形化與節省材料成本，薄型化主要是將導光板材料變薄，節省材料成本則是將 Light-bar由原本置放在背光模組的長邊方向改為短邊設計這樣就可以將LED的顆數降低。
再者會介紹應用到導光板上的光學理論、製程與儀器設備依理論設計出導光板，依製程將導光板印出，然後用儀器設備加以實測驗證結果，最後討論LED與薄型化導光板之間相互的關係進而找出最佳化的光學設計。

關鍵字

背光模組 ； 導光板 ； 發光二極體 ； 網版印刷 ； 光學分析

並列摘要

Due to the fact that TFT-LCD has been extensively applied to various aspects of monitors in recent years, our lives have become more and more colorful. However, since the LCD panel itself does not shine, a backlight module that provides sufficient brightness and equally-distributed illuminant is required to display images. Therefore, a backlight module is considered as one of the essential elements of an LCD panel. Besides, because of the rising of eco-awareness, not only has the design of monitors become more compact, people have also replaced the traditional CCFL illuminant with the LED one to reduce mercury pollution and the waste of energy.
The article focuses on thinning the backlight module and reducing the material cost of 18.5” computer monitors. To thin the backlight module, the material of the light-guide plate is thinned down; to reduce the material cost, the direction of the light-bar within a backlight module is changed. Thus, the number of LEDs would be reduced.
Afterwards, optical theories applied to light-guide plates, procedures, and equipment would be introduced. Theories are used as guidelines while designing light-guide plates. The light-guide plates would also be printed in accordance with the procedures. Equipment is used to examine the result of the experiment. At last, the relationship between the LED and the thinned light-guide plate is discussed to find out the optimum optical design of the product.

並列關鍵字

Backlight module ； Light Guide Plate ； LED ； Screen printing

參考文獻

[8] 張自恭，林奇峰，方育斌，2004 年，“背光模組光學設計”，光連雙月刊，第49期。

[11] 陳進龍，2009年，“丙烯酸酯UV硬化油墨應用之研究”，國立台北科技大學化學工業研究所碩士論文。

[4] 陳禹伸，2011年，“中小尺寸液晶顯示器背光模組發光二極體燈

[1] 劉佳明，莊瑞嬌，黃筠捷，黃光磊，2011，年“2010平面顯示器

產業發展趨勢”，TDMDA。