An organic electroluminescent device includes a substrate including a plurality of pixel regions each having a light emission region and an element region; a plurality of thin film transistors (TFTs) including at least one switching TFT and at least one driving TFT in each element region; a planarization layer on the plurality of TFTs; a first electrode on the planarization layer and including first to third portions connected to one another, wherein the first and second portions are at each pixel region, and the third portion is at a neighboring pixel region; an organic light emitting layer on the first electrode; and a second electrode on the organic light emitting layer, wherein an end of the third portion overlaps the driving TFT of the neighboring pixel region.