摘要
LED是已获广泛应用又还在深入研究和开发的新光源。本文用较通俗易懂的方法分析了它的发光机理，简要介绍相关的发光材料和LED节能环保的特点。
Led has been widely used and it is a new light source in the fiarther research and development. In a straighttbrward way, this paper analyses its luminescence mechanism, briefly introduces the related LED light-emitting materials and the characteristics of energy conservation and environmental protection.
关键词
新光源
复合辐射
带隙控制
三原色合成
照明与显示
new light source
compound radiation
band gap control
three primary colors synthetic
lighting and display
