Effect of Stabilizers on Performance of Electroluminescence Display Device

摘要

The stability of paste solutions for electroluminescence display(ELD)device was found to be greatly affected by kind and dosage of a stabilizer used.The stabilizer Disperbyk-180 showed the best stability performance against phosphor paste solutions among the stabilizers used during this study.The phosphor paste solutions remained stable over 90 days with a wide range of added amounts of Disperbyk-180.Based on the above results,screen printing test was performed.The addition of Disperbyk-180 into phosphor and dielectric paste solutions produced improved qualities such as no phase separation,no bubble generation and no significant viscosity change during printing process.Especially for the phosphor paste solution,both uniformity and brightness were significantly improved and the excellent adhesion onto the ITO film was found.The ELD device fabricated using the above same paste solutions showed brightness of 57.6 cd/m~2 at 100V and 400 Hz.The half lifetime of ELD device was measured as 1,250 hours and almost the same value observed with imported commercial paste solutions.