| 摘要 |
The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x1, y1) and (x2, y2) respectively, a relation of y2≧y1 is satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of Δx=x2−X1 and Δy=y2−y1 respectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceive change in emission color and lifetime can be prolonged |
