Lighting device

1. A lighting device, comprising:

a plurality of light-emitting diodes including a first light-emitting diode with a non-rectangular shape in a top view;

a submount to which each of the plurality of light-emitting diodes is coupled; and

a plurality of conductive elements formed between the submount and the plurality of light-emitting diodes to electrically connecting at least a portion of the plurality of light-emitting diodes with each other in series.

2. The lighting device of claim 1 , wherein the non-rectangular shape comprises a diamond shape, a triangular shape, or a hexagonal shape.

3. The lighting device of claim 1 , further comprising a plurality of solder components formed between the submount and the plurality of light-emitting diodes.

4. The lighting device of claim 3 , wherein the plurality of light-emitting diodes comprises a second light-emitting diode having a bonding metal bonded to one of the solder components.

5. The lighting device of claim 1 , wherein the plurality of light-emitting diodes comprises a second light-emitting diode having an electrode, and a bonding metal formed on the electrode and having a width greater than that of the electrode in a cross-sectional view.

6. The lighting device of claim 1 , wherein the lighting device is free of using bonding wires.

7. The lighting device of claim 1 , further comprising a phosphor layer formed on the plurality of light-emitting diodes.

8. The lighting device of claim 1 , further comprising a growth substrate on which the plurality of light-emitting diodes is formed thereon.

9. The lighting device of claim 1 , wherein each of the plurality of light-emitting diodes has two electrodes formed on the same side thereof.