반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

유연 OLED 디스플레이의 기계적 안정성을 위한 제로 스트레스 봉지막 설계

Design of Zero-Stress Encapsulation for Mechanical Stability of Flexible OLED Displays

  • Jeong, Eun Gyo (Department of Clothing and Textiles, Chonnam National University)
  • 투고 : 2022.02.09
  • 심사 : 2022.03.25
  • 발행 : 2022.03.31
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초록

In this paper, a study was conducted on encapsulation technology for high mechanical stability of flexible displays. First, unlike conventional encapsulation barrier that exclude cracks as much as possible for low water vapor transmission rate (WVTR), mechanical properties were improved by using a defect suppression mechanism introduced with crack arresters. The zero-stress encapsulation barrier optimizes the residual stress of the thin film based to improve the internal mechanical stability. The zero-stress encapsulation barrier was applied to the organic light emitting diodes (OLEDs) to confirm its characteristics and lifetime. Due to improved internal mechanical stability, it has a longer lifetime more than 35% compared to conventional encapsulation technologies. As the zero-stress encapsulation barrier proposed in this study does not require additional deposition process, it is not difficult to apply it. Based on various advantages, it is expected to play an important role in flexible displays.

키워드

과제정보

이 논문은 전남대학교 학술연구비(과제번호: 2021-24360) 지원에 의하여 연구되었음.

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