| 摘要 |
PROBLEM TO BE SOLVED: To provide stable red color luminescence having high brightness by including a distyryl compound as an organic luminescent material in an organic layer arranged between an anode and a cathode. SOLUTION: An organic layer having luminescent region is arranged between an anode and a cathode. A distyryl compound represented by formula I is included as an organic luminescent material in the organic layer. In formula I, R1, R2, R3, and R4 are the same or different group, and are an aryl group represented by formula II. In formula II, R5, R6, R7, R8, and R9 are the same or different group, and are a hydrogen atom, or at least one of them is a saturated or non-saturated alkoxy group or alkyl group. The organic layer has organic laminated structure formed by stacking a hole transport layer, a luminescent layer, and an electron transport layer, and the distyryl compound is used as the forming material of them.
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