An organic electroluminescence device, comprising: - a substrate on which a first electrode layer is provided, - a package of layers comprising organic electroluminescence material, which package is provided on the first electrode layer, - a second electrode layer being provided on the package, - a spacer layer being provided on the second electrode layer, said spacer layer consisting of an UV-cured polymer layer comprising fluoride side groups, - a cover being provided on the spacer layer and being sealed to the substrate via a sealing material consisting of a closed line of a glass frit material, wherein the height of the sealing material is larger than the total thickness of the first electrode layer, the package of layers comprising organic electroluminescent material, the second electrode layer, and the spacer layer, wherein the cover is formed as a layer of flexible metal material with a thickness between 20 and 400 μm and having a flexural rigidity between 0.00015 Nm and 0.15 Nm which is permanently fixed by means of glue to at least a part of the spacer layer, wherein flexural rigidity is calculated according to Equation in "Theory of Plates and Shells" second edition, S. Timoshenko, S. Woinowsky-Kreiger, McGraw-Hill, and wherein there exists a non-fixed zone at the circumference of the spacer layer, which non-fixed zone has a width of 3 mm, and wherein the cover is curved around its circumference in a direction away from the spacer layer, said non-fixed zone defined as the distance between a position where the cover is not in contact any more with the spacer layer and a position where the cover is in contact with the centre of the sealing material, in a direction parallel to the package of layers comprising organic electroluminescent material, wherein the cover is connected with the second electrode layer by means of an electrical contact, said electrical contact being composed of a metal particle-filled polymer material, and wherein the electrical contact is surrounded by a further non-fixed zone in which the cover and the spacer layer are not in contact with each other, said further non-fixed zone having a width of 1.5 mm. - a substrate on which a first electrode layer is provided, - a package of layers comprising organic electroluminescence material, which package is provided on the first electrode layer, - a second electrode layer being provided on the package, - a spacer layer being provided on the second electrode layer, said spacer layer consisting of an UV-cured polymer layer comprising fluoride side groups, - a cover being provided on the spacer layer and being sealed to the substrate via a sealing material consisting of a closed line of a glass frit material, wherein the height of the sealing material is larger than the total thickness of the first electrode layer, the package of layers comprising organic electroluminescent material, the second electrode layer, and the spacer layer, wherein the cover is connected with the second electrode layer by means of an electrical contact, said electrical contact being composed of a metal particle-filled polymer material, and wherein the electrical contact is surrounded by a further non-fixed zone in which the cover and the spacer layer are not in contact with each other, said further non-fixed zone having a width of 1.5 mm.