本論文以具有全方位反射器封裝之白光 LED 作為小尺寸 LED 晶粒取代大尺寸 LED 晶粒時，兩者發光色溫或色度座標不一致時，以色彩學原理為基準，提出一套白光 LED 色性質修正模式，利用 Matlab 程式做計算，以電源供應器提供電流使不同尺寸 LED 之紫外光、紫光、藍光晶粒達到發光顏色相近之結果。本實驗以固定電流密度做 Matlab 計算時，具有全方位反射器封裝之大、小尺寸 LED 對目標值(P0)之色差分別為 1.1 及 3.62 。為改善溫度上升所造成的波長位移，因此以相同電流密度為基礎做計算時之大、小尺寸 LED 對目標值(P0)之色差分別為 1.77 及 3.26 。由色差結果可知，因溫度上升所造成的波長位移對色差影響很小。。
本研究採用多晶封裝結構，分別使用紫外光晶粒、紫光晶粒及藍光晶粒，螢光膠層是由紅色、綠色及黃色螢光粉與透明矽膠混合。本文使用之全方位反射器可提升紫外光與紫光晶粒之發光效率，利用光學方式提升 LED 晶粒的發光效率，對於晶粒本身結構並不會有任何影響，因此不會影響到 LED 的 I-V 曲線。而具有全方位反射器封裝之 LED ，其大、小尺寸 LED 紫外光與紫光晶粒之發光效率分別提升 23.5 % 、 22.9 % 、 19.7 % 、 14.3 % 。

This paper use the white light LED packaged with omni-directional reflector (ODR) when a different size LED mix, both color temperature or chromaticity coordinates inconsistencies. We propose a set of white light LED color properties correction mode which is based on color science principles. Matlab program is used to calculate in the principle of chromatics. We provide current to drive the ultraviolet, violet, and blue LED chips of different sizes to achieve the similar emitting color. With fixed current density calculations in Matlab, the color difference of large and small-size LED, which have white light LED packaged with ODR, on the target coordinate (P0) were 1.1 and 3.62, respectively. To improve the wavelength shift caused by the temperature rises, my calculation is based on the same current density, the color difference of large and small-size LED on the target coordinate (P0) were 1.77 and 3.26, respectively. As the results, the wavelength shift has little effect on the color difference.
In this study, we use multiple chips structure. The LED is comprised of three excitation chips of which are ultraviolet light chip, violet light chip and blue light chip; the phosphor blend is mixing transparent resin with red, green and yellow phosphors. The ODR structure in this study is to enhance the luminous efficiency of ultraviolet and violet chips. It enhances the luminous efficiency of LED chips optically, so the chips do not affect the I-V curve. The luminous efficiency of ultraviolet and violet of different size packaged with ODR enhance 23.5 %, 22.9 %, 11.3 % and 3.3 %, respectively.

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