In this study, we have attempted to develop and study a dispersed-type inorganic high-luminance electroluminescent (EL)panel by controlling the film thicknesses of its phosphor and dielectric layers. We obtained a panel with a high luminance of 7940cd⁄m
2 at 6kHz. In addition, we believed that the panel temperature and luminance of this panel were closely related. Therefore, we considered the relationship between the temperature change in the dielectric layer and the luminance since this relationship is responsible for the supply of electric charge to the phosphor layer. A change in the amount of electric charge by heating in a high-voltage domain originates at the Curie point of BaTiO
3 ferroelectric particles. This indicates that the influence of BaTiO
3 was strong. Moreover, the current that flows through the panel in the high-voltage domain is considered to originate from the increase in the impedance.
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