The Study of LED Light Bar for Small and Medium Size LCD Back Light Module

• Main Authors: Yu-shen Chen, 陳禹伸
• Other Authors: 陳文瑞
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/h36j53

碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 99 === 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.