An organic electroluminescent device includes partition walls dividing a region into a first region, a second region and a third region, a first organic layer disposed in the first region, a second organic layer disposed in the second region, and a third organic layer disposed in the third region. The first region includes a plurality of effective pixels involved in light emission, continuously disposed along a first aligning axis. Each effective pixel includes an effective pixel electrode, a common electrode, and the first organic layer between the effective pixel electrode and the common electrode. The second region and the third region oppose each other with the first region therebetween, and the first region, the second region and the third region are aligned along the first aligning axis.