DC FIELD LIGHT-EMITTING DEVICE AND MANUFACTURE THEREOF

摘要

PURPOSE: To improve the contrast of a light emitting surface by evaporating an electric non-conductive material on a flat translucent electrode by use of using a mask having pores arranged closely and discontinuously thereon, and forming an insulating layer having a thickness of 1μm or less which contains a dotted matter. CONSTITUTION: A transparent conductor layer 20 such as tin oxide is formed on a plate glass 18 as a second electrode. A dotted matter 24 formed of a nonconductive material such as silicon monoxide arranged in a close line with a mutual space is provided thereon as an insulating layer. A metallic electrode 12 which forms a base for mounting and fixation is provided thereon through a phosphor layer 14 to form a dc electroluminescent device 10. The dotted matter insulating layer 24 forming a highly contrast light emitting surface can be provided by evaporating evaporated particles 38 vertically to a conductive layer 20 in a thickness of 1μm or less by use of a metal wire mesh or plastic filament having the corresponding ports as a mask 40.