Lead free, Low temperature sealing materials for soda lime glass substrates in Plasma Display Panel (PDP)

摘要

New glass compositions for lead free, low temperature sealing glass frit was examined in ZnO-V_2O_5-P_2O_5 glass system which can be used sealing material for PDP to be made of soda lime glass substrates. Among many glass compositions, KFS-C glass showed low glass transition point (Tg) and good fluidity and adhesion characteristics when it was tested by flow button method at low temperature of 420 ℃. Its Tg was 317 ℃ and thermal expansion coefficient (CTE) was 70×10~(-7)/K. The glass frit was mixed with an organic vehicle to make a paste and it was dispensed and sealed with soda lime glass substrates at 420 ℃ for 10min. Sealed glass panels also showed good adhesion strength even sealed at low temperature of 420 ℃.