| 摘要 |
<p>Disclosed is a light-emitting element having improved optical extraction efficiency. The light-emitting element includes: a light-emitting diode layer which generates and discharges light; and a transparent electrode layer which is formed on the upper surface of the light-emitting diode layer and transmits the light emitted by the light-emitting diode layer. A first groove portion configured to have first periodic (p) grooves is formed on the upper surface of the light-emitting diode layer, and a second groove portion configured to have second periodic (q) grooves which are different from the first periodic (p) grooves is formed on the upper surface of the transparent electrode layer. In said manner, the first and second groove portions are configured to have grooves having different periods, and thus the extraction efficiency of the light which is generated on the light-emitting diode layer and is emitted out of the transparent electrode layer can be further improved.</p> |
