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Title: The fracture of brittle thin films on compliant substrates in flexible displays
Authors: Chen, Zhong
Cotterell, Brian
Wang, Wei
Keywords: DRNTU::Engineering::Materials
Issue Date: 2002
Source: Chen, Z., Cotterell, B., & Wang, W. (2002). The Fracture of Brittle Thin Films on Compliant Substrates in Flexible Displays. Engineering Fracture Mechanics, 69(5), 597-603.
Series/Report no.: Engineering fracture mechanics
Abstract: One mechanical issue in flexible organic light emitting displays (OLED) is the fracture of extremely thin brittle conducting transparent oxide films deposited on thin flexible substrates. Understanding the behaviour of these films under flexed condition is essential for designer of flexible OLED. Controlled buckling experiments on the film and substrate have been designed to study the fracture of the films under both tension and compression. Fracture of the film is superficially similar in both tension and compression. However, under tension a channelling crack is formed, while under compression, the film delaminates, buckles and cracks in a tunnelling motion. The fracture toughness of the film and the delamination toughness have been estimated from these experiments. Design to maximise the flexibility of the device is discussed.
DOI: 10.1016/S0013-7944(01)00104-7
Rights: © 2002 Elsevier Science Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Engineering Fracture Mechanics, Elsevier Science Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: DOI: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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