| 摘要 |
PROBLEM TO BE SOLVED: To enhance light-emitting density, to improve stability and to use a casting method for covering a doped mixture by including quinacridone at least in one area in an electroluminescence element. SOLUTION: A basic structure in electroluminescence arrangement comprises of a substrate, an anode, an electroluminescence element and a cathode. At least one of the anode or the cathode is transparent in a visible spectrum region. The electroluminescence element contains at least one region selected from (1) an electron hole injection region, (2) an electron hole transport region, (3) an electroluminescence region, (4) an electron transport region and (5) an electron implantation region. One or more kinds of quinacridone exist at least in one of these. Here, when there are two or more regions, the regions must exist in order of (1) to (5).
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