| abstract |
A method for reducing moisture contamination in top-emitting OLED devices comprising: providing a substrate (720) having top and bottom surfaces; forming two or more top-emitting EL units (130c,130d) over the top surface of the substrate, wherein each EL unit produces light that is primarily not emitted through the substrate; forming one or more first (140c) and one or more second protective (140d) covers over the top and bottom surfaces of the substrate, respectively, and thereby defining two or more first and two or more second chambers (150c,150d), respectively; providing moisture-absorbing material (180c,180d) in association with each second chamber; and providing communication (190c,190d) 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. |