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Synthesis of P2O5-V2O5-ZnO Glass Frit for Laser Sealing of OLED by the Addition of Filler

필러 첨가에 의한 OLED의 레이저 실링용 P2O5-V2O5-ZnO 유리프릿의 제조

  • Bang, Jae-Chul (Department of Display and Materials Engineering, Soon Chun Hyang University)
  • 방재철 (순천향대학교 디스플레이신소재공학과)
  • Received : 2015.07.29
  • Accepted : 2015.08.24
  • Published : 2015.09.01

Abstract

In this study, we developed a lead-free $P_2O_5-V_2O_5-ZnO$ glass frit for sealing OLED using laser irradiation. The frit satisfied the characteristics required for laser sealing such as low glass transition temperature, low coefficient of thermal expansion (CTE), high water-resistance, and high absorption at the wavelength of the laser beam. Ceramic fillers were added to the glass frit in order to further reduce and match its CTE with that of the commercial glass substrate. The addition of Zirconium Tungsten Phosphate (ZWP) to the frit yielded the most desirable results, reducing the CTE to $45.4{\times}10^{-7}/^{\circ}C$, which is very close to that of the glass substrate ($44.0{\times}10^{-7}/^{\circ}C$). Successful formation of a solid sealing layer was observed by optical and scanning electron microscopy.

Acknowledgement

Supported by : 순천향대학교

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