| 摘要 |
Embodiments of the present invention relate to a controller, an organic light emitting display panel, an organic light emitting display device, and a driving method thereof to prevent a decrease phenomenon of image quality by a voltage drop of driving voltage by newly defining a brightness decrease and a brightness variation phenomenon by the voltage drop of the driving voltage as a factor of a decrease in image quality, and compensate for the voltage drop of the driving voltage. |
