本篇論文以紫外光激發之白光發光二極體為基礎搭配全方位反射器封裝，提出以InGaN晶粒為基礎之具有色溫可調性之白光發光二極體，並以田口式實驗法進行多色螢光粉之調配來達成標準白光。首先因為紫外光晶粒(λpeak=378nm)的選用，會有紫外光外漏的現象，本文使用全方位反射器封裝來改善此問題，針對實際需求進行全方位反射器的設計與製作，將紫外光封鎖在導線架內部，且讓可見光能有良好的穿透。在20mA的電流驅動下，實際量測可得色座標為(0.325, 0.327)、色溫5851K、演色性96.47，其光源規格已與CIE D65標準光源相當接近。且由光場分佈量測可確認，各發光角度下紫外光穿透量皆低於10%，確認能有效抑制紫外光穿透。使用全方位反射器封裝能在不傷害LED電性的情況下，將發光效率平均提昇15%。本文提出將上述紫外光激發白光發光二極體與另一紫光(λpeak =410nm)及一藍光晶粒(λpeak =465nm)共同封裝於此結構中，藉由螢光粉的選擇與電流調控可獲得具有色溫可調性之白光發光二極體。經實驗驗證，發光品質已可調至色座標(0.3347, 0.3384)，色溫5398 K，演色性81，且色溫可調範圍為3137K~8746K，已包括日常生活中常用到的色溫範圍。雖然整體而言略有發光不均勻的情況，但本文也藉由粗化最上方的封裝玻璃來改善此問題，可以將白光的發光角度從±10度提昇為±80度，且在±70度內色溫範圍為6284 ~7499 K，明顯提昇其均勻性，使其在未來更有實際應用的可能。

This work studied the UV-excited white light LED packaged with omni-directional reflector(ODR) and proposed the color temperature tunable white light LED based on InGaN chips. We controlled the composition and concentration of phosphors blend layer by means of Taguchi Method and achieved the standard white light. Since the chosen UV chip resulted in the UV leak, this study proposed the package structure with ODR to solve the problem. We designed and fabricated the ODR can block the UV light in the lead frame for the practical application, and the visible light escaped from the packaging structure of white light LED. At a constant applied current of 20 mA, the chromaticity color coordinates, CCT, Ra were (0.325, 0.327), 5851K and 96.47, respectively. The results were close to that of CIE standard D65 illumination. The angular distribution of the radiant intensity of a UV leak was measured and the transmittance of UV light was under 10%. We confirmed the ODR can prevent UV leak from the device. The ODR packaging structure can enhance the average luminous intensity 15% without any damage on the electronic properties of LED. This study proposed a violet light chip(λpeak =410 nm) and a blue light chip(λpeak =465 nm) combined with the above structure of UV-excited white light LED, and we can achieve a color temperature white light LED by controlling the concentration of phosphor and driving current. Specifically, the color coordinate for the light source made was (0.3347, 0.3384), the correlated color temperature was 5398 K, the CRI had a value of 81. The tunable range of CCT was 3137 K~8746 K. It has included the application in the life. Although the uniformity occurred to this case, we improved the problem by roughing the top glass of the packaging structure. The emitting angle of white light can be increased from ±10 degrees to ±80 degrees, and the CCT was at the range of 6284 K ~7499 K in ±70 degrees. The increasing uniformity can make it practical in the future.

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