Display apparatus

1. A display apparatus comprising:

a substrate including a display area and a sensor area, the sensor area including an auxiliary display area and a transmitting area;

a plurality of first display elements arranged over the display area;

a plurality of second display elements arranged over the auxiliary display area;

a plurality of transmitting units arranged in the transmitting area and configured to transmit at least a portion of light incident on the transmitting area; and

an optical layer comprising a mesh pattern covering at least the plurality of second display elements.

2. The display apparatus of claim 1 ,

wherein the plurality of second display elements are grouped into a plurality of pixel units each of which is defined by four adjacent transmitting units of the plurality of transmitting units.

3. The display apparatus of claim 1 ,

wherein the plurality of second display elements are grouped into a plurality of pixel units, and

wherein each of the plurality of pixel units and each of the plurality of transmitting units are alternately arranged.

4. The display apparatus of claim 1 ,

wherein each of the plurality of first display elements and the plurality of second display elements comprises:

a thin film transistor;

a pixel electrode electrically connected to the thin film transistor;

an emission layer on the pixel electrode; and

an opposite electrode on the emission layer.

5. The display apparatus of claim 1 ,

wherein the optical layer further comprises an opening portion that exposes at least a portion of each of the plurality of transmitting units.

6. The display apparatus of claim 1 ,

wherein the optical layer is configured to encapsulate at least the plurality of first display elements and the plurality of second display elements.

7. The display apparatus of claim 1 , further comprising:

an encapsulation substrate disposed between the substrate and the optical layer to cover at least the plurality of first display elements and the plurality of second display elements.

8. The display apparatus of claim 7 ,

wherein the optical layer is formed of an insulating layer of which a first surface is in contact with the encapsulation substrate and of which a second surface opposite the first surface includes the mesh pattern.

9. The display apparatus of claim 8 ,

wherein the insulating layer comprises at least one of silicon oxide, silicon nitride, and silicon oxynitride.

10. The display apparatus of claim 1 , further comprising:

an organic encapsulation layer disposed between the optical layer and the substrate.

11. The display apparatus of claim 10 ,

wherein the optical layer is formed of an inorganic encapsulation layer, and

wherein the inorganic encapsulation layer includes a first surface that is in contact with the organic encapsulation layer and a second surface that is opposite the first surface and includes the mesh pattern.

12. The display apparatus of claim 1 ,

wherein the mesh pattern comprises a plurality of grooves on a surface of the optical layer, and

wherein a first group of the plurality of grooves extends in a first direction and a second group of the plurality of grooves extends in a second direction different from the first direction.

13. A display apparatus comprising:

a substrate including a display area and a sensor area, the sensor area including an auxiliary display area and a transmitting area;

a plurality of first display elements arranged over the display area;

a plurality of second display elements arranged over the auxiliary display area;

a plurality of transmitting units arranged in the transmitting area and configured to transmit at least a portion of light incident on the transmitting area; and

an optical layer including a diffraction grating covering at least the plurality of second display elements,

wherein the number of the plurality of second display elements per a unit area is less than the number of the plurality of first display elements per the unit area.

14. The display apparatus of claim 13 ,

wherein the plurality of second display elements are grouped into a plurality of pixel units each of which is defined by four adjacent transmitting units of the plurality of transmitting units.

15. The display apparatus of claim 13 ,

wherein the plurality of second display elements are grouped into a plurality of pixel units, and

wherein each of the plurality of pixel units and each of the plurality of transmitting units are alternately arranged.

16. The display apparatus of claim 13 ,

wherein the optical layer further comprises an opening portion that exposes at least a portion of each of the plurality of transmitting units.

17. The display apparatus of claim 13 ,

wherein each of the plurality of first display elements and the plurality of second display elements comprises:

a thin film transistor;

a pixel electrode electrically connected to the thin film transistor;

an emission layer on the pixel electrode; and

an opposite electrode on the emission layer.

18. The display apparatus of claim 14 ,

wherein the diffraction grating is configured to generate a first diffracted light from a first light of a first pixel and a second diffracted light from a second light of a second pixel adjacent to the first pixel so that the first light and the second light are mixed to generate a third light and the third light is emitted from a region, where no pixel exists, between the first pixel and the second pixel.

19. The display apparatus of claim 18 ,

wherein the first light, the second light and the third light are different from each other.

20. The display apparatus of claim 13 ,

wherein the diffraction grating comprises a plurality of grooves on a surface of the optical layer, and

wherein the plurality of grooves include a first group of grooves extending in a first direction and a second group of grooves extending in a second direction different from the first direction.