| Summary: | 碩士 === 輔仁大學 === 科技管理學程碩士在職專班 === 97 === The main research of this thesis is to study the development of LED (Light Emitting Diode) application on general lighting, and how to increase LED usage in general household market. LED is developed in the early 70s, and it is well known LED has many advantages over traditional lightings and has longer life-time. Currently, the white light LED’s brightness already reaches 20~40 lm/W, which is the same brightness of a general white light bulb. But the keys to make white light LED as a general lighting are LED’s lighting efficiency and the price.
The Japan researches estimated, by year 2010 white light LED’s lighting efficiency will overtake fluorescent lamp, and has great potential in the lighting market. LED’s application on the lighting market is getting larger. Current applications including: handheld spotlights and flashlights, backlight/front light source for automotive displays, traffic signal lights, automotive interior lightings, decoration lights and etc.
This research studies relative documentations to understand the current LED industry situation, and uses current developed technologies to further investigate the development of LED application on general lighting. The thesis also investigates the limitations and the causes of LED lightings not been used in general household lightning. LED lighting market will be analyzed to understand the future development trend of LED lighting and current unsolved difficulties on the market.
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