abstract |
The present invention, a substrate; A first electrode; Second electrode; And an organic layer provided between the first electrode and the second electrode, the organic layer including a light emitting layer and a hole injection layer, wherein one of the first electrode and the second electrode is a reflective electrode, and the other is a translucent electrode. Or a transparent electrode, when the light emitting color of the organic layer is red, the thickness of the hole injection layer of the organic light emitting device of 1600 ~ 2200 및 and a flat display device having the same. The organic light emitting diode may have excellent driving voltage, current density, luminance, color purity, luminous efficiency, and lifetime. |