本論文致力於提升LED之封裝效率與演色性，首先使用兩種不同粒徑之黃色螢光粉作效率上的探討，並應用孫慶成教授領導之固態照明實驗室中螢光粉光學模型，建立兩種不同粒徑之螢光粉模型，可得到大粒徑之螢光粉封裝效率表現比小粒徑之螢光粉好。並使用大粒徑之黃色螢光粉模型模擬出棋盤式LED封裝，藉此提生白光LED之封裝效率，並分析棋盤式LED封裝之分佈影響。然而考慮到演色性之問題，改良棋盤式LED噴塗之封裝方式，使用紅色螢光粉與綠色螢光粉加入探討，藉由模擬優化以及分析，製作出高效率與高演色性之LED。;This thesis aims to improve the packaging efficiency and the CRI of LEDs. In the beginning, we studied the efficiency of two YAG phosphors in different radiuses. By applying professor Sun phosphor optical model to generate two models for both phosphors, it can be concluded that the packing efficiency of the wider radius phosphor was better than the narrow one. Additionally, the yellow phosphor optical model of the wider phosphor was used to simulate a chessboard structure LED package. In order to improve the packaging efficiency of the white light LED and to analyze the influence caused by the distribution of the chessboard structure LED package. Yet, with consideration of its CRI, by improving the packaging method of the chessboard structure LED, adding both red and green phosphors into the study, and applying with addition simulation optimization and analyzation, a high packaging efficiency and high CRI LED can be manufactured.