| 摘要 |
An organic light emitting display device is provided to improve a color purity and a color stability by improving an exciton generation efficiency of respective light emitting cells. An organic light emitting display device includes a substrate(10), first and second electrodes(20,80), and first and second light emitting layers(40a,40b). The first electrode is formed on the substrate. The second electrode is arranged to be opposite to the first electrode. The first light emitting layer is arranged between the first and second electrodes and has a first HOMO(Highest Occupied Molecular Orbital) potential and a first LUMO(Lowest Unoccupied Molecular Orbitals) potential. The second light emitting layer is arranged between the first and second electrodes and has a second HOMO potential and a second LUMO potential. A band gap between the first HOMO and first LUMO potentials is the same as the band gap between the second HOMO and second LUMO potentials. |
