Patent ID: 8183074

Claim:
A method for manufacturing a light emitting element assembly, the method comprising the steps of: (A) sequentially forming a first compound semiconductor layer having a first conduction type, an active layer, and a second compound semiconductor layer having a second conduction type on a substrate; (B) forming a plurality of point-like hole portions penetrating through the second compound layer and the active layer in a thickness direction, the plurality of point-like hole portions being located outside each K 0 discrete current confinement regions having different sizes (where K 0 represents an integer of two or more) and located in each region to be provided with a light emitting element assembly; (C) subjecting a part of the second compound semiconductor layer to an insulation treatment from side walls of the hole portions to produce K 0 current confinement regions, wherein each current confinement region is surrounded by an insulating formation in a part of the second compound semiconductor layer; (D) removing at least a part of the second compound semiconductor layer and the active layer selectively to expose a part of the first compound semiconductor layer and produce K 1 mesa structures (where K 1 represents an integer of one or more, and K 1 <K 0 ) including at least the remaining second compound semiconductor layer and active layer in order to form K 1 light emitting elements in each region to be provided with a light emitting element assembly; (E) forming a first electrode connected to the first compound semiconductor layer, and forming a second electrode at a part of the top surface of the second compound semiconductor layer in each of K 1 mesa structures in each region to be provided with a light emitting element assembly; and (F) separating each region to be provided with a light emitting element assembly.