| 摘要 |
According to an embodiment of the present invention, provided is an organic light emitting display panel having uniform brightness. A planarization layer having a contact hole is disposed on a substrate with an auxiliary electrode disposed thereon. The contact hole of the planarization layer has an undercut pattern at a contact point with the auxiliary electrode, and an organic light emitting layer is cut by the contact hole, but a common electrode is connected to the auxiliary electrode in an undercut pattern unit with higher stack coverage than the organic light emitting layer. Uniform brightness of the organic light emitting display panel can be maintained by connecting the auxiliary electrode and the common electrode through the contact hole having an undercut of the planarization layer. |
