| 摘要 |
PCT No. PCT/JP90/01426 Sec. 371 Date Apr. 28, 1993 Sec. 102(e) Date Apr. 28, 1993 PCT Filed Nov. 2, 1990 PCT Pub. No. WO92/08333 PCT Pub. Date May 14, 1992.The present invention relates to a modification of a thin film EL device for performing an EL emission according to an electric field being applied, and in particular to a thin film EL device for providing a stable luminance for a long time and for improving the luminance of a blue color display. Therefore, a light emission layer (4) is composed of a sulfide of an alkaline earth metal as a basic material. Insulation layers (3) and (5) disposed adjacent to the light emission layer (4) are composed of a sulfate or a carbonate of an alkaline earth metal. The light emission layer (4) is composed of SrS as a basic material, Ce as a light emission substance, and a Pb dopant as a coactivator.
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