Touch display device
A touch display device includes light emitting devices disposed on a substrate, an encapsulation unit disposed on the light emitting devices, a touch buffer film disposed on the encapsulation unit, second bridge electrodes disposed on the touch buffer film, a black matrix disposed on the touch buffer film and including openings, color filters that fill the openings, and a cover layer disposed on the color filters and the black matrix.
1. A touch display device comprising:
a substrate having an active area and a bezel area adjacent to the active area;
light emitting devices disposed on the active area of the substrate;
an encapsulation unit disposed on the light emitting devices;
a touch buffer film disposed on the encapsulation unit, the touch buffer film including a first touch buffer film portion that is in the active area and a second touch buffer film portion that extends from the first touch buffer film portion in the active area to the bezel area;
second bridge electrodes disposed on the touch buffer film;
a black matrix disposed on the touch buffer film in the active area and the bezel area of the substrate, the black matrix comprising openings in the active area, a first black matrix portion in the active area that overlaps the first touch buffer film portion in the active area such that the first black matrix portion is farther from the substrate than the first touch buffer film portion in the active area, and a second black matrix portion in the bezel area that overlaps the second touch buffer film portion in the bezel area such that the second black matrix portion is farther from the substrate than the second touch buffer film portion in the bezel area;
color filters disposed to fill the openings; and
a cover layer disposed on the color filters and the black matrix,
wherein the black matrix covers the second bridge electrodes.
2. The touch display device according to claim 1 , further comprising:
touch contact holes formed through the black matrix to expose a part of each of the second bridge electrodes;
a second sensor layer disposed on an upper surface of the black matrix, the second sensor layer comprising second touch electrodes disposed in the touch contact holes and connected to the second bridge electrodes; and
a first sensor layer disposed on the black matrix, the first sensor layer comprising first touch electrodes and first bridge electrodes.
3. The touch display device according to claim 2 , wherein all of the second touch electrodes, the first touch electrodes, and the first bridge electrodes overlap with a portion of the black matrix.
4. The touch display device according to claim 2 , wherein color filters are non-overlapping with the second bridge electrodes and the second sensor layer.
5. The touch display device according to claim 1 , wherein each of the openings has a lower surface that serves as an upper surface of the touch buffer film, and a side surface that serves as an exposed side surface of the black matrix.
6. The touch display device according to claim 1 , wherein:
the touch buffer film is formed of a hydrophilic material with a strong affinity for the color filters; and
the black matrix includes a hydrophobic material that repels a material of the color filters.
7. The touch display device according to claim 1 , wherein the color filters have a convex shape with respect to an upper surface of the black matrix.
8. The touch display device according to claim 1 , wherein the color filters have a protruding surface from an upper surface of the black matrix, the protruding surface forming a step with the upper surface of the black matrix.
9. The touch display device according to claim 8 , wherein an upper portion of each of the openings is greater in size than a lower portion of each of the openings.
10. The touch display device according to claim 1 , wherein the bezel area comprises:
a first bezel area disposed adjacent to the active area;
a pad area in which touch pads are disposed; and
a second bezel area disposed between the first bezel area and the pad area,
wherein the touch pads are conductively connected to routing lines that extend from the active area,
wherein the encapsulation unit and the second black matrix portion are disposed in the first bezel area, and
wherein the second touch buffer film portion is disposed in the first bezel area and a third touch buffer film portion of the touch buffer film that extends from the second touch buffer film portion is in the second bezel area and is non-overlapping with the black matrix in the second bezel area.
11. The touch display device according to claim 10 , wherein the routing lines are disposed on the black matrix in the first bezel area and the active area, and are disposed on the touch buffer film in the second bezel area.
12. The touch display device according to claim 10 , wherein each of the touch pads comprises:
a first touch pad electrode disposed on the substrate so that the touch buffer film is disposed on the first touch pad electrode;
a second touch pad electrode disposed on the first touch pad electrode; and
a third touch pad electrode disposed on the second touch pad electrode,
wherein the touch buffer film has a first touch pad contact hole that exposes first touch pad electrode, and
the second touch pad electrode is disposed on the touch buffer film to contact to the first touch pad electrode.
13. The touch display device according to claim 12 , wherein:
the first touch pad electrode comprises an identical metal as source and drain electrodes of thin film transistors formed on the substrate;
the second touch pad electrode comprises an identical metal as the second bridge electrodes; and
the third touch pad electrode comprises an identical metal as a first sensor layer disposed on an upper surface of the black matrix.
14. The touch display device according to claim 1 , wherein the cover layer comprises:
a passivation layer disposed on the black matrix;
a black optical adhesive layer disposed on the passivation layer; and
a cover window disposed on the black optical adhesive layer.
15. The touch display device according to claim 1 , wherein the cover layer comprises:
a first optical adhesive layer disposed on the black matrix;
a polarization layer disposed on the first optical adhesive layer;
a second optical adhesive layer disposed on the polarization layer; and
a cover window disposed on the second optical adhesive layer.
16. The touch display device according to claim 1 , wherein the cover layer comprises:
a passivation layer disposed on the black matrix;
a first optical adhesive layer disposed on the passivation layer;
a polarization layer disposed on the first optical adhesive layer;
a second optical adhesive layer disposed on the polarization layer; and
a cover window layer disposed on the second optical adhesive layer.