Effects of Alkaline Earth Metal Oxides on High-Temperature Melt Properties of OLED Substrate Glass

doi:10.16552/j.cnki.issn1001-1625.2025.0452

Abstract

Abstract: The properties of high-temperature melts not only affect the melting and preparation of organic light-emitting diode (OLED)substrate glass but also influence the performance and service life of OLED devices. In this paper, alkali-free aluminoborosilicate glass was taken as the research object, and the influence of SrO/MgO molar ratio on the properties of high-temperature melts of OLED substrate glass (high-temperature viscosity, high-temperature resistivity, and surface tension) was systematically explored. The results show that with the increase of the SrO/MgO molar ratio, the high-temperature viscosity of the glass melt shows a nonlinear change, and when the SrO/MgO molar ratio is 3.31, the high-temperature viscosity reaches a maximum value. The high-temperature resistivity of the melt at 1 600 ℃ is increased by an average of 32.22%, and the melt surface tension decreases by an average of 2.47%. This study provides a scientific basis for optimizing key process performance of OLED substrate glass and has important guiding significance for industrial production and manufacturing.

Key words: organic light-emitting diode, substrate glass, high-temperature viscosity, high-temperature resistivity, surface tension

CLC Number:

TQ171.6⁺2

TIAN Yingliang, WANG Zhongyu, LI Zhifeng, ZHAO Zhiyong. Effects of Alkaline Earth Metal Oxides on High-Temperature Melt Properties of OLED Substrate Glass[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(10): 3826-3832.

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