INORGANIC LIGHT-EMITTING ELEMENT

To provide a light-emitting element, capable of being manufactured by coating, having a long life, having high quantum efficiency, capable of achieving a wide color gamut, and having high electron injection efficiency, and a display device including the same.SOLUTION: Both or one of the following two conditions are to be satisfied. The two conditions are 1) an energy level (Ec (HTL)) at a bottom of a conduction band of a hole transport material contained in a hole transport layer is made higher than an energy level (Ec (EML)) at a bottom of a conduction band of the light-emitting material contained in the light-emitting layer and 2) an energy level (Ev (ETL)) at a top of a valence band of an electron transport material contained in an electron transport layer is made lower than an energy level (Ev (EML)) at a top of a valence band of the light-emitting material contained in the light-emitting layer.SELECTED DRAWING: Figure 1 【課題】塗布により製造でき、寿命が長く、高い量子効率を有し、広い色域を実現でき、さらに高い電子の注入効率を有する発光素子およびこれを備えた表示装置を提供する。【解決手段】正孔輸送層に含有される正孔輸送材料の伝導帯下端のエネルギー準位（Ｅｃ（ＨＴＬ））を、発光層に含有される発光材料の伝導帯下端のエネルギー準位（Ｅｃ（ＥＭＬ））よりも高くすること、電子輸送層に含有される電子輸送材料の価電子帯上端のエネルギー準位（Ｅｖ（ＥＴＬ））を、発光層に含有される発光材料の価電子帯上端のエネルギー準位（Ｅｖ（ＥＭＬ））よりも低くすること、の両方またはどちらか一方を満たすことにより上記の課題を解決する。【選択図】図１