Patent ID: 7763902

Claim:
A light emitting diode (LED) chip, comprising: a substrate; a first type doped semiconductor layer, disposed on the substrate; a second type doped semiconductor layer, disposed over the first type doped semiconductor layer, wherein the first type doped semiconductor layer and the second type doped semiconductor layer are different conductive types of n-type and p-type; a light emitting layer, disposed between the first type doped semiconductor layer and the second type doped semiconductor layer; at least an Indium-doped Al x Ga 1-x N based material layer (0≦x<1), disposed on at least one surface of the light emitting layer; at least a tunneling junction layer, disposed between the Indium-doped Al x Ga 1-x N based material layer and the first type doped semiconductor layer and/or disposed between the Indium-doped Al x Ga 1-x N based material layer and the second type doped semiconductor layer; wherein the Indium-doped Al x Ga 1-x N based material layer and the tunneling junction layer are disposed at the same side of the light emitting layer, wherein a layer of the tunneling junction layer in contact with the Indium-doped Al x Ga 1-x N based material layer is in different material to each other; a first electrode, disposed on the first type doped semiconductor layer; and a second electrode, disposed on the second type doped semiconductor layer, wherein the tunneling junction layer comprises: a first type Al x Ga 1-x N based material layer (0≦x<1); and a second type Al x Ga 1-x N based material layer (0≦x<1), disposed on one surface of the first type Al x Ga 1-x N based material layer.