Light emitting device, method for manufacturing light emitting device, and display device

A display device comprising a light emitting device, wherein the light emitting device comprises a first electrode, a second electrode and an electroluminescent layer (EL) interposed between the first electrode and the second electrode, the EL comprising an emitting material layer (EML) and an electron blocking layer (EBL), wherein:

• the EML comprises a first base material doped with a first guest material,
• the EBL comprises a second base material doped with a second guest material, and
• wherein the first guest material and the second guest material are both light emitting materials, and
• wherein light emitted by the first guest material has a dark blue color, and light emitted by the second guest material has a light blue color.

A method for manufacturing a light emitting device, comprising:

• forming an electroluminescent layer (EL) comprising an emitting material layer (EML) and an electron blocking layer (EBL) on a first electrode, the EML comprising a first base material doped with a first guest material and the EBL comprising a second base material doped with a second guest material;
• and
• forming a second electrode on the EL,
• wherein the first guest material and the second guest material are both light emitting materials, and wherein light emitted by the first guest material has a dark blue color, and light emitted by the second guest material has a light blue color.