Patent ID: 7462868

Claim:
A light emitting diode (LED) chip with double close-loop electrode design, comprising: a substrate; a first-type doped semiconductor layer, disposed on the substrate; a light emitting layer, disposed on the first-type doped semiconductor layer and exposing a part of the first-type doped semiconductor layer; a second-type doped semiconductor layer, disposed on the light emitting layer; a first electrode, disposed on the first-type doped semiconductor layer and having a close-loop pattern; a second electrode, disposed on the second-type doped semiconductor layer, located inside a region encircled by the first electrode and having a close-loop pattern encircling a hollow region which goes through the second-type doped semiconductor layer and the light emitting layer for exposing a part of the first-type doped semiconductor layer; and a plurality of micro-structures located on the surface of the first type doped semiconductor layer in the hollow region.