交流供電之高壓發光二極體之光電特性分析

Analysis of Optoelectronic Properties for High Voltage AC Operated LED

吳厚錫(Hou-Shi Wu)

指導教授 ： 王培仁

國立清華大學/工學院/動力機械工程學系/碩士(2011年)

摘要

隨著人類文明發展，照明科技已經廣泛地應用在人類生活中，消耗在照明上之能源也日益增加。因固態照明技術之進步，家庭照明正逐步被發光二極體(Light Emitting Diode 簡稱 LED) 取代。
近年來，照明產業為配合市電規格，高壓發光二極體(High Voltage LED)與交流發光二極體(Alternating Current LED)蓬勃發展。因此，LED之燈泡、燈管將直接使用市電系統，由於不需要進行交流轉直流之降壓轉換過程，能源使用上更有效率，約可以減少15~30 % 之能源轉換消耗。
本論文旨在研究高壓發光二極體之光學、電氣特性。研究規劃上，量測高壓發光二極體之電壓、電流、流明、色溫、色度座標等光電參數之交互關係。其次，因為LED模組具熱累積、電流上升等暫態，使得LED之色度座標位移，使用積分球測量此色度位移量，並以CIE1931色度空間作為分析基礎，確認結果符合ANSI照明標準。最後使用ANSI標準規範評估色容差(SDCM, Standard Deviation of Color Matching)之穩定性。

關鍵字

固態照明 ； 高壓發光二極體 ； 色容差 ； 色度座標位移

並列摘要

Along with the development of civilization, lighting technology has been widely used in our daily life resulted more energy consumption as the use of lighting gradually increases. In the advent of solid-state lighting technology, household lightings will soon be replaced by light-emitting diodes gradually.
In recent years, in order to comply with utility system specifications, high-voltage LED, abbreviated as HV LED, and alternating-current LED have been developed in the industry. Consequently, lamps and tubes made of LEDs will be directly applied to public lighting systems. Lack of AC/DC conversion units, the systems become more energy efficient. Approximately, energy efficiency will increase in the range of 15 to 30%.
The objective of this thesis is to study the optical and electrical properties of HV LED. Firstly, interactions of light-electricity parameters including voltage, current, lumen, color temperature, and color coordinate have been measured. The LED modules under test have exhibited transient heat accumulation and current fluctuation lead to color coordinate displacement. Finally, the displacement of color coordinate measured by integrating sphere has been based on CIE1931 standard with results complying with ANSI Standard. The thesis has concluded stability of the color tolerances (SDCM, Standard Deviation of Color Matching) agreeing with the ANSI Standard.

並列關鍵字

Solid-state lighting ； HV LED ； SDCM ； Color Coordinate Displacement

參考文獻

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[1] American National Standard Lighting Group, “ANSI_NEMA_ANSLG_C78.377-2008,” American National Standard Institute (2008).