A display device includes a substrate with a major surface and a cover opposing the substrate. An array of light emitting pixels is disposed over a generally central portion of the major surface, and interposed between the substrate and the cover. A seal is disposed over a peripheral portion of the substrate, and interposed between and interconnecting the substrate and the cover. Between the seal and the substrate, a lower insulation layer, an upper insulation layer, and a structure located between the lower and upper insulation layers and including at least one metal layer. The upper insulation layer includes an uneven top surface. A contour of the uneven top surface of the upper insulation layer may conform with or follow that of the top uneven surface of the structure. The seal contacts and is bonded to the uneven top surface of the upper insulation.