Display panel and display device comprising the same

1 . A display device comprising:

a display panel including a plurality of light emitting areas including a plurality of first light emitting areas and a plurality of third light emitting areas; and

a first optical electronic device located under the display panel,

wherein a first optical area of the display panel overlapping the first optical electronic device comprises a plurality of first light transmission areas and the plurality of first light emitting areas,

wherein a third optical area of the display panel not overlapping the first optical electronic device includes the plurality of third light emitting areas without light transmission areas, and

wherein the display panel comprises:

organic light emitting elements disposed in the first optical area and the third optical area and corresponding to the plurality of first light emitting areas and the plurality of third light emitting areas;

a driving transistor for driving an organic light emitting element of the organic light emitting elements in the third optical area;

a planarization layer between the driving transistor and the organic light emitting element in the third optical area;

an encapsulation layer disposed on the organic light emitting elements;

a first insulating layer disposed on the encapsulation layer;

a touch sensor disposed on the first insulating layer; and

a second insulating layer disposed on the touch sensor,

wherein a thickness of the first insulating layer in the third optical area is smaller than a thickness of the second insulating layer in the third optical area, and the thickness of the first insulating layer in the first optical area is smaller than the thickness of the second insulating layer in the first optical area,

wherein the thickness of the first insulating layer disposed in the third optical area is greater than the thickness of the first insulating layer disposed in the first optical area, and the thickness of the second insulating layer disposed in the third optical area is greater than the thickness of the second insulating layer disposed in the first optical area,

wherein the planarization layer is extended from the third optical area to the plurality of first light transmission areas of first optical area and disposed below the encapsulation layer,

wherein the organic light emitting elements include an anode electrode, an emission layer, and a cathode electrode, and

wherein the emission layer within a plurality of first transmission areas is separated from the emission layer within a plurality of third optical areas.

2 . The display device according to claim 1 , wherein the thickness of the second insulating layer in the first optical area is greater than 2 times the thickness of the first insulating layer in the first optical area, and less than or equal to 2.5 times the thickness of the first insulating layer in the first optical area.

3 . The display device according to claim 1 , wherein the thickness of the second insulating layer in the third optical area is 2 times the thickness of the first insulating layer in the third optical area.

4 . The display device according to claim 1 , further comprising:

a second optical electronic device located under the display panel,

wherein the display panel further includes a plurality of second light emitting areas,

wherein a second optical area of the display panel overlapping the second optical electronic device comprises a plurality of second light transmission areas and the plurality of second light emitting areas, and

wherein the third optical area is disposed between the first optical area and the second optical area.

5 . The display device according to claim 4 , wherein the thickness of the first insulating layer disposed in the third optical area is greater than a thickness of the first insulating layer disposed in the second optical area, and the thickness of the second insulating layer disposed in the third optical area is greater than a thickness of the second insulating layer disposed in the second optical area.

6 . The display device according to claim 5 , wherein the thickness of the first insulating layer disposed in the second optical area corresponds to the thickness of the first insulating layer disposed in the first optical area, and the thickness of the second insulating layer disposed in the second optical area corresponds to the thickness of the second insulating layer disposed in the first optical area.

7 . The display device according to claim 4 , wherein the thickness of the first insulating layer disposed in the second optical area corresponds to the thickness of the first insulating layer disposed in the third optical area, and the thickness of the second insulating layer disposed in the second optical area corresponds to the thickness of the second insulating layer disposed in the third optical area.

8 . The display device according to claim 4 , wherein the first optical electronic device is a camera, and the second optical electronic device is a sensor.

9 . The display device according to claim 4 , wherein a number of subpixels per unit area in the first optical area is less than a number of subpixels per unit area in the third optical area, and a number of subpixels per unit area in the second optical area is greater than or equal to the number of subpixels per unit area in the first optical area.

10 . The display device according to claim 1 , wherein the first insulating layer and the second insulating layer comprises silicon nitride (SixNy).

11 . The display device according to claim 10 , wherein a composition ratio of a number of atoms of each of the first insulating layer and the second insulating layer is expressed by:

N≥Si.

12 . The display device according to claim 1 , wherein the display panel further comprises a cathode electrode disposed in respective the plurality of light emitting areas, and not disposed in the first light transmission areas of the first optical area.

13 . The display device according to claim 1 , wherein the display panel further comprises a light shield layer disposed under transistors in respective the plurality of light emitting areas and not disposed in the first light transmission areas.

14 . A display panel comprising:

a substrate including a display area having a plurality of organic light emitting elements corresponding to a plurality of light emitting areas including a plurality of first light emitting areas and a plurality of third light emitting areas,

wherein a first optical area of the display area overlaps a first optical electronic device disposed under the display panel and comprises a plurality of first light transmission areas and the plurality of first light emitting areas, and

wherein a third optical area of the display panel not overlapping the first optical electronic device includes the plurality of third light emitting areas without including light transmission areas;

a driving transistor for driving an organic light emitting element of the plurality of organic light emitting elements in the third optical area;

a planarization layer between the driving transistor and the organic light emitting element in the third optical area;

an encapsulation layer disposed on the organic light emitting elements;

a first insulating layer disposed on the encapsulation layer;

a touch sensor disposed on the first insulating layer; and

a second insulating layer disposed on the touch sensor,

wherein a thickness of the first insulating layer in the third optical area is smaller than a thickness of the second insulating layer in the third optical area, and the thickness of the first insulating layer in the first optical area is smaller than the thickness of the second insulating layer in the first optical area,

wherein the thickness of the first insulating layer disposed in the third optical area is greater than the thickness of the first insulating layer disposed in the first optical area, and the thickness of the second insulating layer disposed in the third optical area is greater than the thickness of the second insulating layer disposed in the first optical area,

wherein the planarization layer is extended from the third optical area to the plurality of first light transmission areas of first optical area and disposed below the encapsulation layer,

wherein the organic light emitting elements include an anode electrode, an emission layer, and a cathode electrode, and

wherein the emission layer within a plurality of first transmission areas is separated from the emission layer within a plurality of third optical areas.

15 . The display panel according to claim 14 , wherein the thickness of the second insulating layer in the first optical area is greater than 2 times the thickness of the first insulating layer in the first optical area, and less than or equal to 2.5 times the thickness of the first insulating layer in the first optical area.

16 . The display panel according to claim 14 , wherein the thickness of the second insulating layer in the third optical area is 2 times the thickness of the first insulating layer in the third optical area.

17 . The display panel according to claim 14 , further comprising:

a second optical electronic device located under the display panel,

wherein the display panel further includes a plurality of second light emitting areas,

wherein a second optical area of the display panel overlapping the second optical electronic device comprises a plurality of second light transmission areas and the plurality of second light emitting areas, and

wherein the third optical area is disposed between the first optical area and the second optical area.

18 . A display panel comprising:

a substrate including a display comprising a first optical area overlapping a first optical electronic device located under the substrate, and a third optical area located outside of the first optical area; and

a plurality of organic light emitting elements disposed over the substrate in the first optical area and the third optical area;

a driving transistor for driving an organic light emitting element of the plurality of organic light emitting elements in the third optical area;

a planarization layer between the driving transistor and the organic light emitting element in the third optical area;

an encapsulation layer disposed on at least one of the organic light emitting elements;

a first insulating layer disposed on the encapsulation layer;

a touch sensor disposed on the first insulating layer; and

a second insulating layer disposed on the touch sensor,

wherein respective thicknesses of the first insulating layer in the third optical area and the first optical area are not uniform, and respective thicknesses of the second insulating layer in the third optical area and the first optical area are not uniform to increase a transmittance of incident light over a predetermined wavelength,

wherein the first optical area further includes a plurality of first light transmission areas,

wherein the planarization layer is extended from the third optical area to the plurality of first light transmission areas of first optical area and disposed below the encapsulation layer,

wherein the organic light emitting elements include an anode electrode, an emission layer, and a cathode electrode, and

wherein the emission layer within a plurality of first transmission areas is separated from the emission layer within a plurality of third optical areas.

19 . The display panel according to claim 18 , further comprising:

a second optical electronic device located under the display panel,

wherein a second optical area of the display panel overlapping the second optical electronic device comprises a plurality of second light transmission areas and a plurality of organic light emitting elements disposed over the substrate in the second optical area, and

wherein the third optical area is disposed between the first optical area and the second optical area.

20 . The display panel according to claim 19 , wherein the thickness of the first insulating layer disposed in the third optical area is greater than a thickness of the first insulating layer disposed in the second optical area, and the thickness of the second insulating layer disposed in the third optical area is greater than a thickness of the second insulating layer disposed in the second optical area.