A review of highly reliable flexible encapsulation technologies towards rollable and foldable OLEDs

作者：Eun Gyo Jeong, Jeong Hyun Kwon, Ki Suk Kang, So Yeong Jeong, Kyung Cheol Choi · 发表于：Journal of Information Display · 年份：2019 · DOI：10.1080/15980316.2019.1688694 · 被引用次数：166 · 研究领域：Organic Light-Emitting Diodes Research、Organic Electronics and Photovoltaics、Advanced Sensor and Energy Harvesting Materials

As the demand for flexible, rollable, and foldable displays grows, various state-of-the-art component technologies, including thin-film transistors (TFTs), electrodes, thin-film encapsulations (TFEs), and touch screen panels, have been developed based on organic light-emitting diodes (OLEDs) with flexible organic layers. Developing highly reliable flexible OLEDs is essential to realize flexible displays, but the flexible encapsulation technology still has technical difficulties and issues to be addressed. This review covers the recent developments in encapsulation technologies, particularly their material and structural designs, for highly reliable, flexible OLEDs. The solution concepts for the existing technical hurdles in flexible encapsulations are addressed. Among the various advanced flexible encapsulation technologies developed so far, neutral-axis engineering with a thin metal layer and a crack arrester is introduced.