Light emitting element, and display apparatus including the same

A light emitting element comprising:

• a first electrode;
• a second electrode facing the first electrode;
• a plurality of light emitting structures sequentially stacked between the first electrode and the second electrode, each of the plurality of light emitting structures including a hole transport region, a light emitting layer, and an electron transport region;
• and
• a charge generating layer disposed between adjacent ones of the plurality of light emitting structures between the first electrode and the second electrode, wherein
• two or more of the plurality of light emitting structures are blue light emitting structures that emit blue light,
• at least one of the plurality of light emitting structures is a green light emitting structure that emits green light, and
• the green light emitting structure includes:
• a first sub-light emitting layer including a first host, a first dopant, and a low refractive material having a refractive index value less than or equal to about 1.7 at 460 nm;
• and
• a second sub-light emitting layer disposed on the first sub-light emitting layer, and including a second host and a second dopant.

A display device comprising:

• a light emitting element that outputs source light;
• and
• an optical layer disposed on the light emitting element, and either transmitting the source light or converting a wavelength of the source light, wherein
• the light emitting element includes:
• a first electrode;
• a second electrode facing the first electrode;
• and
• a plurality of light emitting structures stacked between the first electrode and the second electrode, each of the plurality of light emitting structures including a hole transport region, a light emitting layer, and an electron transport region,
• at least one of the plurality of light emitting structures is a green light emitting structure that emits green light, and
• the light emitting layer of the green light emitting structure includes:
• a first sub-light emitting layer including a low refractive material having a refractive index value less than or equal to about 1.7 at 460 nm;
• and
• a second sub-light emitting layer not including the low refractive material, and disposed on the first sub-light emitting layer.