Patent ID: 8659004

Claim:
A light-emitting diode comprising: a light-emitting section, which comprises an active layer, having a quantum well structure and formed by laminating alternately a well layer which comprises a composition expressed by the composition formula of (Al X1 Ga 1-X1 ) As (0≦X1≦1) and a barrier layer which comprises a composition expressed by the composition formula of (Al X4 Ga 1-X4 ) Y2 In l-Y 2P(0≦X4≦1, 0<Y2≦1), and a first clad layer and a second clad layer, between both of which the active layer is sandwiched, wherein the first clad layer and the second clad layer comprise a composition expressed by the composition formula of (Al X3 Ga 1-x3 ) Y1 In 1-Y1 (0≦X3≦1, 0<Y1≦1); a current diffusion layer formed on the light-emitting section; and a functional substrate bonded to the current diffusion layer, said light-emitting diode having a main light extraction surface on a side of the light-emitting section opposite a bonding surface of the functional substrate with the current diffusion layer.