Touch sensor and display device including the touch sensor

1. A touch sensor comprising:

first pressure sensors disposed in a first touch region; and

second pressure sensors disposed in a second touch region,

wherein each of the first pressure sensors and the second pressure sensors includes:

a first electrode;

a second electrode disposed to be spaced apart from the first electrode; and

a pressure sensitive layer disposed between the first electrode and the second electrode,

wherein the second touch region is disposed at least one side of the first touch region and has a curved shape,

wherein a first pressure detection sensitivity of the first pressure sensors in response to a touch input that is applied in a direction perpendicular to the first touch region is different from a second pressure detection sensitivity of the second pressure sensors in response to a touch input that is applied in a normal direction of the second touch region.

2. The touch sensor of claim 1 , wherein the first touch region has a flat shape.

3. The touch sensor of claim 1 , wherein the second touch region is disposed at both sides of the first touch region.

4. The touch sensor of claim 1 , wherein the first electrode, the second electrode, and the pressure sensitive layer are disposed on the same plane, and

a first thickness of the pressure sensitive layer of the first pressure sensor is smaller than a second thickness of the pressure sensitive layer of the second pressure sensor.

5. The touch sensor of claim 1 , wherein the first electrode, the second electrode, and the pressure sensitive layer are disposed on the same plane, and

a first distance between the first and second electrodes of the first pressure sensor is longer than a second distance between the first and second electrodes of the second pressure sensor.

6. The touch sensor of claim 1 , wherein the second electrode is disposed on the first electrode, and

a first thickness of the pressure sensitive layer of the first pressure sensor is larger than a second thickness of the pressure sensitive layer of the second pressure sensor.

7. The touch sensor of claim 1 , wherein the second electrode is disposed on the first electrode, and

a first overlapping area of the first and second electrodes of the first pressure sensor is smaller than a second overlapping area of the first and second electrodes of the second pressure sensor.

8. The touch sensor of claim 1 , wherein each of the first pressure sensors includes a first resistance sensing line of which at least a portion is bent, and

each of the second pressure sensors includes a second resistance sensing line of which at least a portion is bent.

9. The touch sensor of claim 8 , wherein a first thickness of the first resistance sensing line is smaller than a second thickness of the second resistance sensing line.

10. The touch sensor of claim 1 , further comprising:

a first bumper disposed on at least one of upper and lower surfaces of each of the first pressure sensors; and

a second bumper disposed on at least one of upper and lower surfaces of each of the second pressure sensors.

11. The touch sensor of claim 10 , wherein a first overlapping area of the first pressure sensor and the first bump is larger than a second overlapping area of the second pressure sensor and the second bumper.

12. The touch sensor of claim 10 , wherein a first height of the first bumper is smaller than a second height of the second bumper.

13. The touch sensor of claim 1 , further comprising third pressure sensors disposed in a third touch region,

wherein the third touch region is disposed at one side of the first touch region and one side of the second touch region, and

a third pressure detection sensitivity of the third pressure sensors is smaller than the first pressure detection sensitivity of the first pressure sensors.

14. A display device comprising:

a display panel including a plurality of pixels disposed in a first display region and a second display region, the display panel displaying an image; and

a touch sensor disposed on at least one of upper and lower surfaces of the display panel, the touch sensor including first pressure sensors disposed in a first touch region and second pressure sensors disposed in a second touch region,

wherein each of the first pressure sensors and the second pressure sensors includes:

a first electrode;

a second electrode disposed to be spaced apart from the first electrode; and

a pressure sensitive layer disposed between the first electrode and the second electrode,

wherein the second display region and the second touch region have a curved shape,

wherein a first structure of the first pressure sensors is different from a second structure of the second pressure sensors.

15. The display device of claim 14 , wherein a center of curvature of the curved shape is located on a rear surface that is opposite to a front surface on which the image is displayed, and a second pressure detection sensitivity of the second pressure sensor in response to a touch input that is applied in a normal direction of the second touch region is greater than a first pressure detection sensitivity of the first pressure sensor in response to a touch input that is applied in a direction perpendicular to the first touch region.

16. The display device of claim 14 , wherein the first electrode, the second electrode, and the pressure sensitive layer are disposed on the same plane, and

a first thickness of the pressure sensitive layer of the first pressure sensor is smaller than a second thickness of the pressure sensitive layer of the second pressure sensor.

17. The display device of claim 14 , wherein the first electrode, the second electrode, and the pressure sensitive layer are disposed on the same plane, and

a first distance between the first and second electrodes of the first pressure sensor is longer than a second distance between the first and second electrodes of the second pressure sensor.

18. The display device of claim 14 , wherein the second electrode is disposed on the first electrode, and

a first thickness of the pressure sensitive layer of the first pressure sensor is larger than a second thickness of the pressure sensitive layer of the second pressure sensor.

19. The display device of claim 14 , wherein the second electrode is disposed on the first electrode, and

a first overlapping area of the first and second electrodes of the first pressure sensor is smaller than a second overlapping area of the first and second electrodes of the second pressure sensor.

20. The display device of claim 14 , wherein each of the first pressure sensors includes a first resistance sensing line of which at least a portion is bent, and

each of the second pressure sensors includes a second resistance sensing line of which at least a portion is bent,

wherein a first thickness of the first resistance sensing line is smaller than a second thickness of the second resistance sensing line.

21. The display device of claim 14 , further comprising:

a first bumper disposed on at least one of upper and lower surfaces of each of the first pressure sensors; and

a second bumper disposed on at least one of upper and lower surfaces of each of the second pressure sensors.

22. The display device of claim 21 , wherein a first overlapping area of the first pressure sensor and the first bump is larger than a second overlapping area of the second pressure sensor and the second bumper.

23. The display device of claim 21 , wherein a first height of the first bumper is different from a second height of the second bumper.

24. The display device of claim 14 , wherein a center of curvature of the curved shaped is located on a first surface on which the image is displayed, and a second pressure detection sensitivity of the second pressure sensor in response to a touch input that is applied in a normal direction of the second touch region is smaller than a first pressure detection sensitivity of the first pressure sensor in response to a touch input that is applied in a direction perpendicular to the first touch region.

25. A display device comprising:

a display panel displaying an image through a first display region and a third display region disposed at one side of the first display region; and

a touch sensor disposed on at least one of upper and lower surfaces of the display panel, the touch sensor including first pressure sensors disposed in a first touch region corresponding to the first display region and third pressure sensors disposed in a third touch region corresponding to the third display region,

wherein virtual buttons are displayed in the third display region,

wherein a first structure of the first pressure sensors is different from a third structure of the third pressure sensors, and

wherein the first display region and the third display regions have a flat shape.

26. The display device of claim 25 , wherein a third pressure detection sensitivity of the third pressure sensors is smaller than a first pressure detection sensitivity of the first pressure sensors.

27. The display device of claim 25 , wherein the display panel further includes a second display region disposed at one side of the first display region and the third display region, and

the touch sensor further includes second pressure sensors disposed in a second touch region corresponding to the second display region,

wherein the second display region and the second touch region have a curved shape.

28. The display device of claim 27 , wherein a second pressure detection sensitivity of the second pressure sensors in response to a touch input that is applied in a normal direction of the second touch region is larger than a first pressure detection sensitivity of the first pressure sensors in response to a touch input that is applied in a direction perpendicular to the first touch region.