Organic light-emitting apparatus having light-emitting layers including different material respectively, and display apparatus, lighting apparatus, electronic apparatus, moving object, and image-forming apparatus including organic light-emitting apparatus

1 . An organic light-emitting apparatus, comprising:

a first organic light-emitting device and a second organic light-emitting device, wherein the first organic light-emitting device comprises, in the following order:

a first electrode;

a first light-emitting layer;

a charge generation layer;

a second light-emitting layer; and

a second electrode,

the first light-emitting layer contains a first light-emitting material, the second light-emitting layer contains a second light-emitting material,

each of the first light-emitting material and the second light-emitting material emits light of a first color,

wherein the second organic light-emitting device comprises, in the following order:

a third electrode,

a third light-emitting layer,

a second charge generation layer,

a fourth light-emitting layer, and

a fourth electrode,

the third light-emitting layer contains a third light-emitting material, the fourth light-emitting layer contains a fourth light-emitting material, and

each of the third light-emitting material and the fourth light-emitting material emits light of a second color different from the first color, and

wherein the first light-emitting material and the second light-emitting material are different.

2 . The organic light-emitting apparatus according to claim 1 , wherein a full width at half maximum of a photoluminescence spectrum of the first light-emitting material is different from a full width at half maximum of a photoluminescence spectrum of the second light-emitting material.

3 . The organic light-emitting apparatus according to claim 2 , wherein the full width at half maximum of the photoluminescence spectrum of the first light-emitting material is larger than the full width at half maximum of the photoluminescence spectrum of the second light-emitting material.

4 . The organic light-emitting apparatus according to claim 2 , wherein the full width at half maximum of the photoluminescence spectrum of the first light-emitting material is smaller than the full width at half maximum of the photoluminescence spectrum of the second light-emitting material.

5 . The organic light-emitting apparatus according to claim 2 , wherein a difference between the full width at half maximum of the photoluminescence spectrum of the first light-emitting material and the full width at half maximum of the photoluminescence spectrum of the second light-emitting material is within 30 nm.

6 . The organic light-emitting apparatus according to claim 1 , wherein a distance between the first electrode and the first light-emitting layer is a first optical distance that intensifies light having a wavelength of the first color, and a distance between the first electrode and the second light-emitting layer is a second optical distance that intensifies the light having the wavelength of the first color and has an order different from the first optical distance.

7 . The organic light-emitting apparatus according to claim 1 , wherein a lowest unoccupied molecular orbital energy level of the charge generation layer is lower than a highest occupied molecular orbital energy level of the second light-emitting layer.

8 . The organic light-emitting apparatus according to claim 1 , further comprising a reflective electrode,

wherein the first organic light-emitting device comprises, in the following order:

the reflective electrode,

the first electrode,

the first light-emitting layer,

the second light-emitting layer, and

the second electrode,

wherein a distance between the reflective electrode and the first light-emitting layer is a first optical distance that intensifies light having a wavelength of the first color, and a distance between the reflective electrode and the second light-emitting layer is a second optical distance that intensifies the light having the wavelength of the first color and has an order different from the first optical distance.

9 . The organic light-emitting apparatus according to claim 1 , wherein an orthogonal projection of the second light-emitting layer on the first electrode is larger than an orthogonal projection of the first light-emitting layer on the first electrode.

10 . The organic light-emitting apparatus according to claim 1 , further comprising a lens on which light emitted from the first light-emitting layer is incident,

wherein the second light-emitting layer is disposed between the lens and the first light-emitting layer.

11 . The organic light-emitting apparatus according to claim 1 , further comprising:

a first hole transport layer between the first electrode and the first light-emitting layer; and

a second hole transport layer between the charge generation layer and the second light-emitting layer,

wherein a lowest unoccupied molecular orbital energy level of the first hole transport layer is higher than a lowest unoccupied molecular orbital energy level of the first light-emitting layer,

a lowest unoccupied molecular orbital energy level of the second hole transport layer is higher than a lowest unoccupied molecular orbital energy level of the second light-emitting layer, and

a difference in lowest unoccupied molecular orbital energy level between the first hole transport layer and the first light-emitting layer is larger than a difference in lowest unoccupied molecular orbital energy level between the second hole transport layer and the second light-emitting layer.

12 . The organic light-emitting apparatus according to claim 1 , further comprising:

a first electron transport layer between the first light-emitting layer and the charge generation layer; and

a second electron transport layer between the second light-emitting layer and the second electrode,

wherein a highest occupied molecular orbital energy level of the first electron transport layer is lower than a highest occupied molecular orbital energy level of the first light-emitting layer,

a highest occupied molecular orbital energy level of the second electron transport layer is lower than a highest occupied molecular orbital energy level of the second light-emitting layer, and

a difference in highest occupied molecular orbital energy level between the second electron transport layer and the second light-emitting layer is larger than a difference in highest occupied molecular orbital energy level between the first electron transport layer and the first light-emitting layer.

13 . The organic light-emitting apparatus according to claim 1 , wherein the first electrode is electrically coupled to a driving circuit, and

the first light-emitting material is a thermally activated delayed fluorescence material.

14 . The organic light-emitting apparatus according to claim 1 , wherein the third light-emitting material and the fourth light-emitting material are the same material.

15 . The organic light-emitting apparatus according to claim 1 , wherein the third light-emitting material and the fourth light-emitting material are different materials.

16 . The organic light-emitting apparatus according to claim 1 , wherein a wavelength of the light of the second color is longer than a wavelength of the light of the first color.

17 . The organic light-emitting apparatus according to claim 1 , wherein a wavelength of the light of the second color is shorter than a wavelength of the light of the first color.

18 . The organic light-emitting apparatus according to claim 1 , wherein the first organic light-emitting device comprises a first lens, and the second organic light-emitting device comprises a second lens,

the second light-emitting layer is disposed between the first lens and the first light-emitting layer, and

the fourth light-emitting layer is disposed between the second lens and the third light-emitting layer.

19 . The organic light-emitting apparatus according to claim 18 , wherein in a cross section perpendicular to a surface of the first electrode in contact with a first organic compound layer including the first light-emitting layer,

a midpoint of the first electrode of the first organic light-emitting device does not coincide with a vertex of the first lens in plan view.

20 . The organic light-emitting apparatus according to claim 19 , wherein in the cross section perpendicular to the surface of the first electrode in contact with the first organic compound layer,

a midpoint of the third electrode of the second organic light-emitting device does not coincide with a vertex of the second lens in plan view, and

a distance between the midpoint of the first electrode of the first organic light-emitting device and the vertex of the first lens is different from a distance between the midpoint of the third electrode and the vertex of the second lens.

21 . A display apparatus, comprising:

multiple pixels,

at least one of the multiple pixels including:

the organic light-emitting apparatus according to claim 1 , and

a transistor coupled to the organic light-emitting apparatus.

22 . An image pickup apparatus, comprising:

an optical unit including multiple lenses;

an image pickup device configured to receive light passing through the optical unit; and

a display unit configured to display an image captured by the image pickup device,

wherein the display unit includes the organic light-emitting apparatus according to claim 1 .

23 . An electronic apparatus, comprising:

a display unit including the organic light-emitting apparatus according to claim 1 ;

a housing provided with the display unit; and

a communication unit disposed in the housing and communicating with outside.