- 學位論文
中小尺寸液晶顯示器背光模組發光二極體燈條之 研究
The Study of LED Light Bar for Small and Medium Size LCD Back Light Module
摘要
這些年來在市場上發光二極體，由於在液晶螢幕顯示器背光源滲透率越來越高，產品應用趨向薄型化，而在背光發光源，發光二極體(light emitting diodes ；LED)的技術佔很重要的關鍵指標漸漸取代傳統CCFL燈管，由於LED及CHIP的形式有很多種。為了找出相關最佳化的組配設計，本研究將針對此設計方式進行相關研究。 目前市面上以電腦螢幕尺寸約在18.5~24吋，26吋主要是以TV為主，本研究主要是以電腦螢幕所需光源做研究分為兩部份，首先為光學應用理論部份，根據光學理論中所探討的LED出光效率及材料特性等等理論，來推測LED元件在發光時所可能發生的光學現象。再來則是熱阻的實測，透過對於熱阻的認識與了解，來對於所建構的燈條部分進行基板材質熱阻的驗證及LED材料可靠度驗證。最後，根據LCM模組規格來確認、LED出光效率及基板的驗證數據，進行實驗比對，確認側光式背光模組所使用的LED元件及基板設計為最佳設計形式。
並列摘要
In recent years, as the share of light emitting diodes (LED) being applied as the backlight of LCD grows higher to achieve thinner model in the market, the technique of LED started to replace traditional FFC tubes and became a key target. Since there are many patterns of LED and chips, this aim of this research is to find the design pattern which matches best. The size of monitor used with computer in current market is about 18.5-24 inches. Monitors sized above 26 inches are mainly used as television. This research is focused on the light source of computers and can be divided into two sections. The first section studies the applied theory of optics to estimate any optical phenomenon during luminescence of LED according to light efficiency and material properties while the second section measures the thermal resistance on the base board of LED light bar to verify the dependence of certain LED material based on the knowledge of thermal resistance. Finally, the light efficiency of LED and verified data of base board will be compared with the specification of LCM module in experiment in order to confirm that the LED compartments and base board design in edge type backlight module is the best design pattern.