Patent ID: 8796920

Claim:
An organic light emitting display device, comprising: a first substrate; a second substrate opposing the first substrate, wherein the second substrate is formed in a single layer, and wherein the second substrate comprises a central area and a peripheral area surrounding the central area, wherein the central area comprises a first interior surface facing the first substrate, wherein the peripheral area comprises a second interior surface opposite the first substrate that extends to an edge of the second substrate, wherein the first interior surface does not contact an adhesive layer; an array of organic light emitting pixels formed on the first substrate, wherein the array comprises a common electrode; and a seal interconnecting the first substrate and the second substrate while surrounding the array, the seal comprising a thickness between the first and second substrates, wherein the seal contacts the second substrate in the peripheral area and provides a barrier to oxygen of less than approximately 10 −3 cc/m 2 -day and to water of less than 10 −6 g/m 2 -day; wherein the second substrate comprises an exterior surface facing away from the first substrate, and wherein a first distance comprises a shortest distance between the exterior surface and the first interior surface and a second distance comprises a shortest distance between the exterior surface and the second interior surface, wherein the first distance is greater than the second distance, and wherein the common electrode directly contacts the first interior surface at a height from the first substrate, wherein the height is calculated by subtracting the second distance-from the first distance to provide a value and then subtracting said value from the thickness of the seal.