Gallium nitride base blue light LED

This invention relates to gallium nitride group blue LED, it relates to one kind of LED, especially one high efficiency gallium nitride group blue LED. The LED in this invention has high efficiency and long using life. Sapphire substrate, N_GaN layer, active layer, P-GaN layer and current expansion layer are set from top to bottom. n type table-board is set from up surface of the expansion to N-GaN layer, pillar array is set on up surface of the expansion layer, and connectors are set on the up surface and the n type layer of the N-GaN layer. Non-planar surface technique is used to damage optical resonator, and solve the total reflection problem of light on contact surface of the GaN material and air, and alumina and air. ITO transparent electrode is used to replace ally electrode to improve its transmittance.