Folding stabilities of encapsulation layers at positions off the mechanical neutral plane. (17th July 2018)

• Record Type: Journal Article
• Authors: Lee, Haksoo; Han, Jintaek; Ham, Soung Bo; Jang, Choelmin; Huh, Myung Soo; Cho, Sung Min
• Is Part Of: Applied physics express. Volume 11:Number 8(2018)
• Publication Date: 2018-07-17
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.11.086502
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: The folding stabilities of an inorganic single layer and an organic–inorganic multilayer based on the degree of deviation from the neutral plane were investigated for the application of the encapsulation layer to foldable organic light-emitting diodes. The folding stabilities of the two encapsulation layers were evaluated by measuring the change in water vapor transmission rate (WVTR) after 100, 000 repetitive folding times. The organic–inorganic multilayer was found stable despite the repeated folding even though the encapsulation layer deviates from the neutral plane by several tens of microns.