Display device including light-blocking layer and sensor layer
A display device includes: a substrate including a display area having a plurality of pixel areas and a non-display area surrounding at least one side of the display area; a light-blocking layer disposed on a first surface of the substrate and including light transmissive areas to allow incident light to pass therethrough; a circuit-element layer disposed on the light-blocking layer and including a plurality of conductive layers; a light-emitting element layer disposed on the circuit-element layer and including light-emitting elements; and a sensor layer disposed on a second surface of the substrate opposing the first surface to sense the light passing through the light transmissive areas. The light-blocking layer is electrically coupled to at least one of the plurality of conductive layers.
1. A display device, comprising:
a substrate including a display area having a plurality of pixel areas and a non-display area surrounding at least one side of the display area;
a light-blocking layer disposed on a first surface of the substrate and comprising a single layer having light transmissive areas disposed across substantially the entire width of the display area to allow incident light to pass therethrough;
a circuit-element layer disposed on the light-blocking layer and comprising a plurality of conductive layers, at least one first contact hole, and a semiconductor layer in the display area;
a light-emitting element layer disposed on the circuit-element layer and including light-emitting elements; and
a sensor layer disposed on a second surface of the substrate opposing the first surface and extending across substantially the entire width of the display area to sense the light passing through the light transmissive areas,
wherein the light-blocking layer is electrically coupled to at least one of the plurality of conductive layers through the at least one first contact hole disposed in the display area, and the light-blocking layer is disposed between the semiconductor layer and the sensor layer, and
wherein the at least one of the plurality of conductive layers electrically coupled to the light-blocking layer is disposed between the light-emitting element layer and the semiconductor layer.
2. The display device according to claim 1 , wherein the light-blocking layer is configured to receive power through the at least one of the plurality of conductive layers.
3. The display device according to claim 2 , wherein the plurality of conductive layers comprises a power line extending in one direction and configured to receive the power.
4. The display device according to claim 3 , wherein the light-blocking layer is electrically coupled to the power line through at least one second contact hole in the non-display area.
5. The display device according to claim 3 , wherein the light-blocking layer comprises at least one extension part extending from at least one portion of a periphery of the light-blocking layer towards a perimeter of the substrate and disposed adjacent to the power line in the non-display area.
6. The display device according to claim 5 , wherein the at least one extension part is electrically coupled to the power line through at least one second contact hole in the non-display area.
7. The display device according to claim 6 , wherein:
the plurality of conductive layers further comprises a connector interposed between the at least one extension part and the power line,
the at least one extension part is electrically coupled to the connector through at least one third contact hole of the at least one second contact hole, and
the connector is electrically coupled to the power line through at least one fourth contact hole of the at least one second contact hole.
8. The display device according to claim 7 , wherein:
the connector comprises a bridge pattern;
the at least one extension part comprises a protrusion pattern configured to protrude from the at least one extension part towards the power line to overlap the power line, and
the protrusion pattern is electrically coupled to the power line through the at least one second contact hole.
9. The display device according to claim 6 , wherein:
the power line comprises a protrusion pattern configured to protrude towards the at least one extension part of the light-blocking layer to overlap the extension part, and
the protrusion pattern is electrically coupled to the at least one extension part through the at least one second contact hole.
10. The display device according to claim 5 , wherein the non-display area comprises:
a pad area comprising pads to be coupled to an external controller;
a bending area adjacent to the pad area and bendable about a bending axis; and
a wiring area interposed between the bending area and the display area, and
wherein the plurality of conductive layers further comprises a plurality of lines in the wiring area, and the plurality of lines and the power line extend from the pads to the display area.
11. The display device according to claim 10 , wherein the at least one extension part is electrically coupled to the power line through at least one second contact hole in the wiring area.
12. The display device according to claim 10 , wherein the power line has a width greater than that of the plurality of lines in the wiring area.
13. The display device according to claim 10 , wherein the non-display area further comprises a dummy area adjacent to the display area, the display area being disposed between the dummy area and the wiring area, and
wherein the at least one extension part is disposed in at least one of the wiring area and the dummy area.
14. The display device according to claim 3 , wherein the light-blocking layer is electrically coupled to the power line through the at least one first contact hole in the display area.
15. The display device according to claim 14 , wherein the semiconductor layer comprises an active pattern forming at least one transistor, and the plurality of conductive layers in the display area further comprises:
a first gate layer comprising a gate electrode overlapping the active pattern;
a second gate layer comprising at least one capacitor electrode; and
a source-drain layer comprising the power line and a conductive line coupled to the active pattern.
16. The display device according to claim 15 , wherein the at least one first contact hole comprises a second contact hole and a third contact hole, and the second gate layer further comprises a connector electrically coupled to the light-blocking layer through the second contact hole and electrically coupled to the power line through the third contact hole.
17. The display device according to claim 16 , wherein the connector is a bridge pattern that comprises:
a first area extending in parallel to the power line; and
a second area extending from a first end of the first area in a direction perpendicular to the first area.
18. The display device according to claim 17 , wherein the first area overlaps the power line and is electrically coupled to the second contact hole and the third contact hole.
19. The display device according to claim 1 , wherein the plurality of conductive layers comprises a light transmitting layer having light transmission holes overlapping the light transmissive areas.
20. The display device according to claim 1 , wherein the light transmissive areas comprise pinholes.
21. The display device according to claim 1 , wherein the plurality of conductive layers and the semiconductor layer comprise a pixel circuit electrically connected between a first power line and a second power line, a voltage of the first power line being higher than a voltage of the second power line,
one of the light-emitting elements is electrically connected between the pixel circuit and the second power line,
the light-blocking layer is electrically coupled to the first power line through the at least one first contact hole.