Touch sensor having improved sensing sensitivity and display device including the same
View Patent ↗A touch sensor includes a base layer including a sensing area and a non-sensing area; and a sensor electrode disposed in the sensing area and including sensor patterns. The sensing area may include a first area including at least one non-square boundary with a predetermined curvature and a second area not including the non-square boundary. In an exemplary embodiment of the present inventive concept, sensor patterns disposed in the first area and sensor patterns disposed in the second area among the sensor patterns may have different sizes from each other.
1. A touch sensor comprising:
a base layer including a sensing area and a non-sensing area; and
a sensor electrode disposed in the sensing area and including sensor patterns,
wherein the sensing area includes a first area including a corner area with a predetermined shape and a second area not including the corner area,
wherein, among the sensor patterns, one disposed in the first area and another one disposed in the second area have different sizes from each other,
wherein the sensor patterns include:
first sensor patterns and first bridge patterns connecting the first sensor patterns, and
second sensor patterns and second bridge patterns connecting the second sensor patterns,
wherein the second bridge patterns include a second corner bridge pattern disposed in the first area and second non-corner bridge patterns disposed in the second area, and
wherein the second corner bridge pattern in a first column is not disposed on a line on which the second non-corner bridge patterns in the first column are disposed.
2. The touch sensor of claim 1 , wherein
the sensor patterns disposed in the first area have a less size than the sensor patterns disposed in the second area.
3. The touch sensor of claim 2 , wherein
the sensor patterns include at least one middle sensor pattern disposed to overlap a boundary between the first area and the second area.
4. The touch sensor of claim 3 , wherein
the middle sensor pattern has a different size from each of the sensor patterns disposed in the second area.
5. The touch sensor of claim 4 , wherein
the middle sensor pattern includes a first sub-sensor pattern disposed in the first area and a second sub-sensor pattern disposed in the second area.
6. The touch sensor of claim 5 , wherein
the first sub-sensor pattern and the second sub-sensor pattern have a symmetrical structure with respect to a boundary line between the first area and the second area.
7. The touch sensor of claim 6 , wherein
the middle sensor pattern has a less size than the sensor patterns disposed in the second area.
8. The touch sensor of claim 5 , wherein
the first sub-sensor pattern and the second sub-sensor pattern have different sizes each other.
9. The touch sensor of claim 8 , wherein
the first sub-sensor pattern has a less size than the second sub-sensor pattern.
10. The touch sensor of claim 9 , wherein
the first sub-sensor pattern and the second sub-sensor pattern have an asymmetric structure with respect to a virtual line extending in one direction.
11. The touch sensor of claim 8 , wherein the sensor patterns include dummy electrodes disposed between the first and second sensor patterns.
12. The touch sensor of claim 11 , wherein
dummy electrodes disposed to overlap a boundary between the first area and the second area among the dummy electrodes are connected each other to maintain a continuity.
13. The touch sensor of claim 12 , wherein
dummy electrodes disposed in the first area and dummy electrodes disposed in the second area among the dummy electrodes have a same shape.
14. The touch sensor of claim 12 , wherein
dummy electrodes disposed in the first area and dummy electrodes disposed in the second area among the dummy electrodes have a different shape.
15. The touch sensor of claim 14 , wherein
the dummy electrodes disposed in the first area have a greater width than or a less width than the dummy electrodes disposed in the second area.
16. The touch sensor of claim 11 , wherein
first and second bridge patterns disposed in the first area are not disposed on a line connecting the first and second bridge patterns disposed in the second area in a same column.
17. The touch sensor of claim 16 , wherein
the first and second bridge patterns disposed in the first area are disposed close to the boundary disposed between the first area and the second area than the first and second bridge patterns disposed in the second area.
18. The touch sensor of claim 1 , wherein the first bridge patterns include a first corner bridge pattern in the first area and first non-corner bridge patterns in the second area, and
wherein the first corner bridge pattern in the first column is not disposed on a line on which the first non-corner bridge patterns in the first column are disposed.
19. A display device comprising:
a display panel for displaying an image; and
a touch sensor disposed on the display panel,
wherein the touch sensor includes
a base layer including a sensing area and a non-sensing area; and
a sensing electrode disposed in the sensing area and including sensor patterns,
wherein the sensing area includes a first area including a corner area with a predetermined shape and a second area not including the corner area,
wherein, among the sensor patterns, one disposed in the first area and another one disposed in the second area have different sizes from each other,
wherein the sensor patterns include:
first sensor patterns and first bridge patterns connecting the first sensor patterns, and
second sensor patterns and second bridge patterns connecting the second sensor patterns,
wherein the second bridge patterns include a second corner bridge pattern disposed in the first area and second non-corner bridge patterns disposed in the second area; and
wherein the second corner bridge pattern in a first column is not disposed on a line on which the second non-corner bridge patterns in the first column are disposed.
20. The display device of claim 19 , wherein
the sensor patterns disposed in the first area have a less size than the sensor patterns disposed in the second area.
21. The display device of claim 20 , wherein
the sensor patterns include at least one middle sensor pattern disposed to overlap a boundary between the first area and the second area, and
the middle sensor pattern has a different size from each of the sensor patterns disposed in the second area.
22. The display device of claim 21 , wherein
the middle sensor pattern includes a first sub-sensor pattern disposed in the first area and a second sub-sensor pattern disposed in the second area, and
the first sub-sensor pattern and the second sub-sensor pattern have different sizes each other.
23. The display device of claim 22 , wherein the sensor patterns include dummy electrodes provided between the first and second sensor patterns, and
wherein dummy electrodes disposed to overlap a boundary between the first area and the second area among the dummy electrodes are connected each other to maintain a continuity.
24. The display device of claim 23 , wherein
first and second bridge patterns disposed in the first area among the sensing area are not disposed on a line connecting the first and second bridged patterns disposed in the second area in a same column.
25. The display device of claim 18 , wherein
the display panel includes
a substrate including a display area displaying the image and a non-display area provided at least one side of the display area;
a pixel circuit layer disposed on the substrate and including at least one transistor;
a display element layer disposed on the pixel circuit layer and including at least one light emitting element that emits light; and
an encapsulation layer disposed on the display element layer.