A voltage-light conversion device comprising: a first electrode on a substrate, a second electrode, a voltage-light conversion material adapted to perform a voltage-light conversion and arranged between the first electrode and the second electrode on the voltage-light conversion material, and a thin-film encapsulation (6, 60, 61) on the second electrode for encapsulating at least the voltage-light conversion material, the thin-film encapsulation (6, 60, 61) comprising a first barrier layer formed over the second electrode and having a first barrier layer edge, the first barrier layer is inorganic, wherein the voltage-light conversion device further comprises a structured electrically conducting layer on the substrate, at least one of the first and second electrodes (3, 5) being formed by or electrically connected to the structured electrically conducting layer, characterized in that the thin-film encapsulation (6, 60, 61) further comprises an interlayer formed over the first barrier layer and having an interlayer edge, and a second barrier layer formed over the interlayer and having a second barrier layer edge, wherein the second barrier layer (6, 61) is inorganic and the interlayer is a polymer, the thin-film encapsulation (6, 60, 61) comprises an edge region between the edge of the first barrier layer and the edge of the second barrier layer and within which the interlayer edge of the interlayer is present, the structured electrically conducting layer comprises a structure edge in the edge region of the thin-film encapsulation, in the edge region of the thin-film encapsulation, at least a part of the structure edge of the structured electrically conducting layer is not perpendicular to the interlayer edge of the interlayer, and the structured electrically conducting layer is structured by a groove comprising the structure edge. a first electrode on a substrate, a second electrode, a voltage-light conversion material adapted to perform a voltage-light conversion and arranged between the first electrode and the second electrode on the voltage-light conversion material, and a thin-film encapsulation (6, 60, 61) on the second electrode for encapsulating at least the voltage-light conversion material, the thin-film encapsulation (6, 60, 61) comprising a first barrier layer formed over the second electrode and having a first barrier layer edge, the first barrier layer is inorganic, wherein the voltage-light conversion device further comprises a structured electrically conducting layer on the substrate, at least one of the first and second electrodes (3, 5) being formed by or electrically connected to the structured electrically conducting layer, characterized in that the thin-film encapsulation (6, 60, 61) further comprises an interlayer formed over the first barrier layer and having an interlayer edge, and a second barrier layer formed over the interlayer and having a second barrier layer edge, wherein the second barrier layer (6, 61) is inorganic and the interlayer is a polymer, the thin-film encapsulation (6, 60, 61) comprises an edge region between the edge of the first barrier layer and the edge of the second barrier layer and within which the interlayer edge of the interlayer is present, the structured electrically conducting layer comprises a structure edge in the edge region of the thin-film encapsulation, in the edge region of the thin-film encapsulation, at least a part of the structure edge of the structured electrically conducting layer is not perpendicular to the interlayer edge of the interlayer, and the structured electrically conducting layer is structured by a groove comprising the structure edge.