A large capacity, 704×1024 dots, thin-film electroluminescent (TFEL) display panel with a density of 4.2 lines/mm is fabricated by employing a stacked insulator structure. Improvement of the breakdown phenomenon, from a propagating to a self-healing mode, by interposing a self-healing type insulator between the metal electrode and the second Ta_2O_5 insulator is discussed in this paper. The charge versus applied voltage (Q-V) characteristic of the TFEL device is also reported.