Display apparatus

1 . A display apparatus comprising:

a light-emitting diode in a display area and a pixel circuit electrically connected to the light-emitting diode;

a photo diode in a light detection area overlapping the display area, and a light detection circuit electrically connected to the photo diode;

a read-out line overlapping the light detection circuit and extending in a first direction;

a vertical connection line extending in the first direction in the display area;

a horizontal connection line extending in a second direction crossing the first direction in the display area, and connecting the vertical connection line to the read-out line; and

a vertical voltage line extending in the first direction in the display area and having a width in the second direction greater than a width in the second direction of the vertical connection line.

2 . The display apparatus of claim 1 , wherein the vertical connection line comprises a plurality of vertical connection lines and the vertical voltage line comprises a plurality of vertical voltage lines, and

at least one vertical connection line of the plurality of vertical connection lines is arranged between neighboring vertical voltage lines of the plurality of the vertical voltage lines.

3 . The display apparatus of claim 2 , wherein two vertical connection lines of the plurality of vertical connection lines are arranged between the neighboring vertical voltage lines of the plurality of vertical voltage lines.

4 . The display apparatus of claim 2 , wherein the pixel circuit comprises:

a driving transistor comprising a first terminal, a second terminal, and a gate connected to a first node;

a data write transistor connected to the first terminal of the driving transistor and a data line;

a first initialization transistor connected to the first node and a first horizontal voltage line; and

a second initialization transistor connected to a pixel electrode of the light-emitting diode and to a second horizontal voltage line or a third horizontal voltage line,

wherein the plurality of vertical voltage lines comprises a first vertical voltage line connected to the first horizontal voltage line, a second vertical voltage line connected to the second horizontal voltage line, and a third vertical voltage line connected to the third horizontal voltage line, and a vertical common voltage line.

5 . The display apparatus of claim 4 , further comprising a horizontal common voltage line extending in the second direction in the display area and connected to the vertical common voltage line.

6 . The display apparatus of claim 5 , wherein the horizontal connection line and the horizontal common voltage line are on a first conductive layer, and

the plurality of vertical connection lines and the plurality of vertical voltage lines are on a second conductive layer that is on the first conductive layer.

7 . The display apparatus of claim 1 , wherein the vertical connection line is located to be farther away from an imaginary center line than the read-out line connected to the vertical connection line is, the imaginary center line dividing the display area into two equal areas and extending in the first direction.

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

a data line extending in the first direction in the display area and connected to the pixel circuit;

a vertical data connection line extending in the first direction in the display area; and

a horizontal data connection line extending in the second direction in the display area and connecting the data line to the vertical data connection line.

9 . The display apparatus of claim 8 , wherein the vertical data connection line is located to be closer to an imaginary center line than the data line connected to the vertical data connection line is, the imaginary center line dividing the display area into two equal areas and extending in the first direction.

10 . The display apparatus of claim 8 , wherein the display area comprises a first area in which the horizontal data connection line is arranged, and a second area in which the horizontal connection line is arranged, and

wherein the first area and the second area do not overlap each other.

11 . The display apparatus of claim 1 , wherein the pixel circuit comprises a plurality of pixel circuits and the light detection circuit comprises a plurality of light detection circuits, and

wherein at least two pixel circuits of the plurality of pixel circuits are arranged between light detection circuits of the plurality of light detection circuits neighboring in the second direction.

12 . The display apparatus of claim 11 , wherein four pixel circuits of the plurality of pixel circuits are arranged between light detection circuits of the plurality of light detection circuits neighboring in the second direction.

13 . The display apparatus of claim 11 , wherein the vertical connection line or the vertical voltage line is arranged between two pixel circuits of the plurality of pixel circuits in contact with each other in the second direction.

14 . The display apparatus of claim 1 , wherein the vertical voltage line comprises a first portion having a first width and a second portion having a second width that is greater than the first width.

15 . The display apparatus of claim 14 , wherein an area of the vertical voltage line is two to four times an area of the vertical connection line.

16 . The display apparatus of claim 1 , further comprising a plurality of first auxiliary common voltage lines extending in the first direction in the light detection area.

17 . The display apparatus of claim 16 , wherein the vertical voltage line comprises a plurality of vertical voltage lines, and

wherein at least one first auxiliary common voltage line of the plurality of first auxiliary common voltage lines is arranged between neighboring vertical voltage lines of the plurality of the vertical voltage lines.

18 . The display apparatus of claim 17 , further comprising a plurality of second auxiliary common voltage lines each extending in the second direction in the display area,

wherein some second auxiliary common voltage lines of the plurality of second auxiliary common voltage lines have a same extension axis as a corresponding horizontal connection line, but are spaced from the corresponding horizontal connection line in the second direction.

19 . The display apparatus of claim 16 , wherein the vertical connection line comprises a plurality of vertical connection lines, and

wherein the light detection area comprises a first line area in which the plurality of first auxiliary common voltage lines are arranged, and a second line area in which the plurality of vertical connection lines are arranged.

20 . The display apparatus of claim 19 , wherein some first auxiliary common voltage lines of the plurality of first auxiliary common voltage lines have a same extension axis as a corresponding vertical connection line, and are spaced from the corresponding vertical connection line in the first direction.