Display apparatus including a cathode layer with multiple layers and method of manufacturing the display apparatus

1. A display apparatus, comprising:

a substrate comprising a main display area and a sensor area, the sensor area comprising an auxiliary pixel and a transmission portion, wherein the main display area includes a main pixel;

a sensor disposed in the sensor area and configured to transmit a signal through the substrate and the transmission portion,

wherein the auxiliary pixel comprises an auxiliary light-emitting device comprising an auxiliary cathode layer, and

wherein the auxiliary cathode layer comprises a first auxiliary cathode layer and a second auxiliary cathode layer partially overlapping each other at a first overlapping portion thereof, wherein the auxiliary cathode layer does not cover the transmission portion,

wherein the main pixel comprises a main light-emitting device comprising a main cathode layer,

wherein the auxiliary cathode layer overlaps the main cathode layer and wherein the auxiliary cathode layer and the main cathode layer are connected to each other to form a second overlapping portion.

2. The display apparatus of claim 1 , wherein the first auxiliary cathode layer is in a first auxiliary pixel area of the sensor area, and the second auxiliary cathode layer is in a second auxiliary pixel area spaced apart from the first auxiliary pixel area, and

wherein the first auxiliary cathode layer is connected to the second auxiliary cathode layer to form the first overlapping portion, wherein the first auxiliary cathode layer and the second auxiliary cathode layer are adjacent to each other.

3. The display apparatus of claim 2 , wherein the transmission portion is arranged between the first auxiliary cathode layer and the second auxiliary cathode layer.

4. The display apparatus of claim 2 , wherein the first auxiliary cathode layer and the second auxiliary cathode layer each have rectangular shapes, and

wherein at least one corner of the first auxiliary cathode layer overlaps at least one corner of the second auxiliary cathode layer to form the first overlapping portion.

5. The display apparatus of claim 2 , wherein the first auxiliary cathode layer and the second auxiliary cathode layer have hexagonal shapes, and

a corner of the first auxiliary cathode layer and a corner of the second auxiliary cathode layer constitute the first overlapping portion, wherein the corner of the first auxiliary cathode layer and the corner of the second auxiliary cathode layer face each other.

6. The display apparatus of claim 2 , wherein the first auxiliary cathode layer and the second auxiliary cathode layer have rhombus shapes, and

a side of the first auxiliary cathode layer and a side of the second auxiliary cathode layer constitute the first overlapping portion, wherein the side of the first auxiliary cathode layer and the side of the second auxiliary cathode layer face each other.

7. The display apparatus of claim 2 ,

wherein the auxiliary cathode layer and the main cathode layer are adjacent to each other.

8. The display apparatus of claim 7 , wherein the main cathode layer covers an area of the main display area.

9. The display apparatus of claim 1 , further comprising a contact portion configured to connect the auxiliary cathode layer to a cathode voltage supply wire.

10. The display apparatus of claim 9 , wherein the contact portion is arranged in the sensor area.