Sealant for packaging OLED (Organic Light Emitting Diode) device and application thereof

The invention relates to the technical field of device packaging, in particular to a sealant for packaging an OLED device and application of the sealant, and the sealant comprises the following components in parts by mass: 50-80 parts of a polymerizable compound; 1-6 parts of a photoinitiator; 10 to 50 parts of a reactive diluent; and 1-10 parts of an expansion monomer. The sealant can meet the performance required by general packaging, and in addition, the expansion monomer in the sealant can be subjected to open-loop expansion in the ultraviolet curing process, so that the defect of volume shrinkage of the sealant is overcome, the packaging of an OLED device obtains more excellent water and oxygen barrier capability, and the packaging performance of the OLED device is improved. And the luminous efficiency, the working performance, the stability and the service life of the OLED device are ensured. 本发明涉及器件封装技术领域，尤其涉及一种OLED器件封装用的密封剂及其应用，该密封剂按照质量份数计，包含有：聚合性化合物50-80份；光引发剂1-6份；活性稀释剂10-50份；以及膨胀单体1-10份。所述的密封剂能够满足一般