Thin film electroluminescence display device.

摘要

In a thin film EL display device wherein a transparent electrode (2), a first dielectric layer (3), an EL emission layer (5), a second dielectric layer (7) and a back electrode (8) are laminated in order on a transluscent substrate, 10nm--200nm thickness thin films (4,6) each being made of calcium sulfide or of a mixture containing calcium sulfide which is formed by an electron beam vapor deposition method are provided between the first dielectric layer (3) and the EL emission layer (5) and between the EL emission layer (5) and the second dielectric layer (7), thereby obtaining a thin film EL display device which maintains a stable operation for a long period even when it is driven by A.C. pulses being asymmetry in the time relationship of the driving pulses or being different in amplitude in a positive side and a negative side.