A method for reducing moisture contamination in top-emitting OLED devices comprising: a) providing a substrate having top and bottom surfaces; b) forming two or more top-emitting EL units over the top surface of the substrate, wherein each EL unit produces light that is primarily not emitted through the substrate; c) bonding two or more first protective covers to the top surface of the substrate using a top sealing material, wherein the top sealing material surrounds each individual EL unit or surrounds groups of two or more EL units, the space between the first protective covers and the top surface of the substrate interior of the top sealing material defining first chambers; d) bonding a second protective cover to the bottom surface of the substrate using a bottom sealing material, wherein the bottom sealing material is bonded between substrate and second protective cover at positions corresponding to the top sealing material, the space between the second protective cover and the bottom surface of the substrate interior of the bottom sealing material defining second chambers; or c) bonding a first protective cover to the top surface of the substrate using a top sealing material, wherein the top sealing material surrounds each individual EL unit or surrounds groups of two or more EL units, the space between the first protective cover and the top surface of the substrate interior of the top sealing material defining first chambers; d) bonding two or more second protective covers to the bottom surface of the substrate using a bottom sealing material, wherein the bottom sealing material is bonded between substrate and second protective covers at positions corresponding to the top sealing material, the space between the second protective covers and the bottom surface of the substrate interior of the bottom sealing material defining second chambers; e) providing moisture-absorbing material in association with each second chamber; and f) providing communication between the respective first and second chambers of each EL unit whereby moisture in the first or second chambers is absorbed by the moisture-absorbing material, characterized in that the communication between the respective first and second chambers of each EL unit is provided by a tube connector placed in gaps in the top sealing material and the bottom sealing material. a) providing a substrate having top and bottom surfaces; b) forming two or more top-emitting EL units over the top surface of the substrate, wherein each EL unit produces light that is primarily not emitted through the substrate; c) bonding two or more first protective covers to the top surface of the substrate using a top sealing material, wherein the top sealing material surrounds each individual EL unit or surrounds groups of two or more EL units, the space between the first protective covers and the top surface of the substrate interior of the top sealing material defining first chambers; d) bonding a second protective cover to the bottom surface of the substrate using a bottom sealing material, wherein the bottom sealing material is bonded between substrate and second protective cover at positions corresponding to the top sealing material, the space between the second protective cover and the bottom surface of the substrate interior of the bottom sealing material defining second chambers; or c) bonding a first protective cover to the top surface of the substrate using a top sealing material, wherein the top sealing material surrounds each individual EL unit or surrounds groups of two or more EL units, the space between the first protective cover and the top surface of the substrate interior of the top sealing material defining first chambers; d) bonding two or more second protective covers to the bottom surface of the substrate using a bottom sealing material, wherein the bottom sealing material is bonded between substrate and second protective covers at positions corresponding to the top sealing material, the space between the second protective covers and the bottom surface of the substrate interior of the bottom sealing material defining second chambers; e) providing moisture-absorbing material in association with each second chamber; and f) providing communication between the respective first and second chambers of each EL unit whereby moisture in the first or second chambers is absorbed by the moisture-absorbing material,