Display device and electronic device including the same

1 . A display device, comprising:

a first sub-pixel, a second sub-pixel, and a third sub-pixel, each arranged in a first direction, and each including a pixel circuit;

a photo-sensing pixel including a sensor circuit;

a first data line extending in a second direction crossing the first direction, and electrically connected to the first sub-pixel;

a second data line extending in the second direction, and electrically connected to the second sub-pixel;

a third data line extending in the second direction, and electrically connected to the third sub-pixel;

a readout line extending in the second direction, and electrically connected to the photo-sensing pixel; and

a first additional line extending in the second direction, and electrically connected to the photo-sensing pixel and configured to receive a reset voltage,

wherein the first additional line is disposed in a same layer as each of the first, the second, and the third data lines, and

wherein the readout line is disposed on a layer that is different from that of the first, the second, and the third data lines, and the first additional line.

2 . The display device according to claim 1 , wherein the readout line is disposed on the first data line, the second data line, the third data line, and the first additional line.

3 . The display device according to claim 1 , wherein the readout line overlaps the first additional line, and is disposed on the first additional line.

4 . The display device according to claim 1 , wherein, the first additional line is disposed between the second data line and the third data line.

5 . The display device according to claim 1 , wherein the photo-sensing pixel is disposed between the second sub-pixel and the third sub-pixel.

6 . The display device according to claim 1 ,

wherein each of the first sub-pixel, the second sub-pixel, and the third sub-pixel comprises a light emitting element configured to emit light, and

wherein the photo-sensing pixel comprises a light receiving element configured to output a sensing signal corresponding to the light emitted from the light emitting element.

7 . The display device according to claim 6 ,

wherein the photo-sensing pixel further comprises a bridge pattern electrically connected to the light receiving element, and

wherein the bridge pattern and the readout line are disposed in an identical layer and spaced apart from each other.

8 . The display device according to claim 1 , wherein the first additional line has a width that is greater than a width of the readout line.

9 . The display device according to claim 1 , further comprising a second additional line extending in the first direction, and electrically connected to the first additional line and configured to receive the reset voltage,

wherein the first additional line is disposed on the second additional line with an insulating layer interposed therebetween.

10 . The display device according to claim 1 , further comprising a third additional line electrically connected to each of the first sub-pixel, the second sub-pixel, and the third sub-pixel, and configured to receive a first driving voltage,

wherein the third additional line is disposed in the same layer as each of the first data line, the second data line, the third data line, and the first additional line.

11 . The display device according to claim 10 , wherein the readout line does not overlap the third additional line.

12 . The display device according to claim 1 , wherein the sensor circuit comprises:

a light receiving element;

a first sensor transistor configured to control current flowing to the readout line in response to a voltage of one electrode of the light receiving element;

a second sensor transistor electrically connected between the first sensor transistor and the readout line; and

a third sensor transistor electrically connected between the first additional line and the one electrode of the light receiving element, and including a gate electrode connected to a reset control line,

wherein each of the first sensor transistor and the second sensor transistor comprises a first type semiconductor, and

wherein the third sensor transistor comprises a second type semiconductor that is different from the first type semiconductor.

13 . The display device according to claim 12 ,

wherein each of the first sensor transistor and the second sensor transistor comprises a silicon semiconductor, and

wherein the third sensor transistor comprises an oxide semiconductor.

14 . The display device according to claim 1 , comprising:

a substrate;

a first insulating layer, a second insulating layer, a third insulating layer, a fourth insulating layer, a fifth insulating layer, a sixth insulating layer, a seventh insulating layer, an eighth insulating layer, and a ninth insulating layer disposed sequentially on the substrate;

a first additional layer disposed between the substrate and the first insulating layer;

a second additional layer disposed between the first insulating layer and the second insulating layer;

a third additional layer disposed between the second insulating layer and the third insulating layer;

a fourth additional layer disposed between the third insulating layer and the fourth insulating layer;

a fifth additional layer disposed between the fourth insulating layer and the fifth insulating layer;

a sixth additional layer disposed between the fifth insulating layer and the sixth insulating layer;

a seventh additional layer disposed between the sixth insulating layer and the seventh insulating layer;

an eighth additional layer disposed between the seventh insulating layer and the eighth insulating layer; and

a ninth additional layer disposed between the eighth insulating layer and the ninth insulating layer,

wherein the eighth additional layer includes the first additional line, the first data line, the second data line, and the third data line, and

wherein the ninth additional layer includes the readout line.

15 . A display device, comprising:

a first sub-pixel, a second sub-pixel, and a third sub-pixel, each arranged in a first direction, and each including a pixel circuit;

a photo-sensing pixel including a sensor circuit;

a first data line extending in a second direction crossing the first direction, and electrically connected to the first sub-pixel;

a second data line extending in the second direction, and electrically connected to the second sub-pixel;

a third data line extending in the second direction, and electrically connected to the third sub-pixel;

a readout line extending in the second direction, and electrically connected to the photo-sensing pixel;

a first additional line extending in the second direction, and electrically connected to the photo-sensing pixel and configured to receive a reset voltage; and

a second additional line electrically connected to each of the first sub-pixel, the second sub-pixel, and the third sub-pixel and configured to receive a first driving voltage,

wherein the second additional line is disposed in a same layer as each of the first data line, the second data line, and the third data line,

wherein the readout line and the first additional line are disposed in a common layer, and

wherein the readout line and the first additional line are disposed in a layer that is different from that of the first data line, the second data line, the third data line, and the second additional line.

16 . The display device according to claim 15 ,

wherein the readout line overlaps the second additional line, and

wherein the first additional line is disposed between the second data line and the third data line, and disposed on the second data line and the third data line.

17 . The display device according to claim 15 ,

wherein the first additional line comprises a horizontal line extending in the first direction, and a vertical line extending in the second direction, and

wherein the horizontal line and the vertical line together form a mesh structure.

18 . The display device according to claim 17 , wherein the readout line is spaced apart from the horizontal line and the vertical line.

19 . The display device according to claim 15 , wherein the photo-sensing pixel is disposed between the first sub-pixel and the second sub-pixel.

20 . An electronic device, comprising:

a processor configured to provide input image data to a display device; and

the display device configured to display an image based on the input image data,

wherein the display device comprises:

a first sub-pixel, a second sub-pixel, and a third sub-pixel, each arranged in a first direction, and each including a pixel circuit;

a photo-sensing pixel including a sensor circuit;

a first data line extending in a second direction crossing the first direction, and electrically connected to the first sub-pixel;

a second data line extending in the second direction, and electrically connected to the second sub-pixel;

a third data line extending in the second direction, and electrically connected to the third sub-pixel;

a readout line extending in the second direction, and electrically connected to the photo-sensing pixel; and

a first additional line extending in the second direction, and electrically connected to the photo-sensing pixel and configured to receive a reset voltage,

wherein the first additional line is disposed in a same layer as each of the first data line, the second data line, and the third data line, and

wherein the readout line is disposed on a layer that is different from that of the first data line, the second data line, the third data line, and the first additional line.