| 摘要 |
<p>The present invention provides a light-emitting element having a structure in which the drive voltage is comparatively low and a light-emitting element in which the increase in the drive voltage over time is small. Further, the present invention provides a display device in which the drive voltage and the increase in the drive voltage over time are small and which can resist long-term use. A layer in contact with an electrode in a light-emitting element is a layer containing a P-type semiconductor or a hole-generating layer such as an organic compound layer containing a material having electron-accepting properties. The light-emitting layer (104) is sandwiched between the hole-generating layers (102,103), and an electron-generating layer (105) is sandwiched between the light-emitting layer (104) and the hole-generating layer on a cathode side (103).</p> |
