Touch device configured to correct touch data and display including the same

1. A touch device comprising:

a touch panel comprising:

a first substrate and a second substrate; and

a pressure sensor, the pressure sensor comprising:

a first electrode disposed on the first substrate;

a second electrode disposed on the second substrate;

an insulating layer disposed between the first electrode and the second electrode; and

a spacer,

wherein the pressure sensor is configured to transmit a touch signal corresponding to an intensity of pressure applied to the second substrate through the pressure sensor in response to a touch; and

a touch controller configured to:

acquire touch data at respective nodes from the touch signal;

acquire a touch data variation at the respective nodes based on previous touch data and the touch data at the respective nodes;

correct the touch data at the respective nodes based on the touch data variation; and

acquire a coordinate of a touch location of the touch based on the corrected touch data,

wherein the touch controller is configured to:

recognize nodes in a restoring state based on the touch data variation; and

correct the touch data of the nodes recognized as in the restoring state with a correction parameter, the correction parameter corresponding to the touch data variation of the respective nodes,

wherein the restoring state is a state of the spacer recovering to an original shape after a touch release.

2. The touch device of claim 1 , wherein the touch controller is further configured to recognize a node in the restoring state by recognizing the node having the touch data variation within a predetermined range.

3. The touch device of claim 1 , wherein the correction parameter corresponds to a touch released state of the respective nodes.

4. The touch device of claim 1 , wherein the touch controller configured to acquire the touch data from a difference in signal intensity between the touch signal and a predetermined baseline signal.

5. The touch device of claim 1 , wherein the touch controller is configured to calculate noise from the touch data in response to detecting that a number of the nodes having the touch data greater than a predetermined value is greater than a predetermined number.

6. The touch device of claim 5 , wherein the touch controller is configured to update the correction parameter based on the noise in response to detecting that the noise is greater than a predetermined threshold value.

7. The touch device of claim 1 , wherein the spacer is made of an elastic material.

8. The touch device of claim 1 , wherein the second substrate is a flexible substrate.

9. The touch device of claim 8 , wherein the first substrate is more rigid compared to the second substrate.

10. A display device, comprising: a touch device comprising:

a touch panel comprising:

a first substrate and a second substrate; and

a pressure sensor, the pressure sensor comprising:

a first electrode disposed on the first substrate;

a second electrode disposed on the second substrate;

an insulating layer disposed between the first electrode and the second electrode; and

a spacer,

wherein the pressure sensor is configured to transmit a touch signal corresponding to an intensity of pressure applied to the second substrate through the pressure sensor in response to a touch; and

a touch controller configured to:

acquire touch data at respective nodes from the touch signal;

acquire a touch data variation at the respective nodes based on previous touch data and the touch data at the respective nodes;

recognize nodes in a restoring state based on the touch data variation;

correct the touch data of the nodes recognized as in the restoring state with a correction parameter, the correction parameter corresponding to based on the touch data variation of the respective nodes,

wherein the restoring state is a state of the spacer recovering to an original shape after a touch release.

11. The display device of claim 10 , further comprising

a display panel including an upper substrate and a lower substrate, and a light-emitting device and a driving circuit disposed between the upper substrate and the lower substrate and configuring a plurality of pixels,

wherein the lower substrate is used as the second substrate.

12. A method of operating touch device comprising a touch panel comprising a pressure sensor configured to detect a touch, the method comprising:

acquiring touch data at respective nodes from touch signal transmitted from the pressure sensor;

acquiring a touch data variation at the respective nodes based on previous touch data and the touch data at the respective nodes;

correcting the touch data at the respective nodes based on the touch data variation;

acquiring a coordinate of a touch location of the touch based on the corrected touch data;

recognizing nodes in a restoring state based on the touch data variation; and

correcting the touch data of the nodes recognized as in the restoring state with a correction parameter, the correction parameter corresponding to the touch data variation of the respective nodes,

wherein the pressure sensor comprises a first electrode, a second electrode, an insulating layer disposed between the first electrode and the second electrode, and a spacer, and

wherein the restoring state is a state of the spacer recovering to an original shape after a touch release.

13. The method of claim 12 , further comprising:

recognizing a node in the restoring state by recognizing the node having the touch data variation within a predetermined range.

14. The method of claim 12 , further comprising:

acquiring the touch data from a difference in signal intensity between the touch signal and a predetermined baseline signal.

15. The method of claim 12 , further comprising:

calculating noise from the touch data in response to detecting that a number of the nodes having the touch data greater than a predetermined value is greater than a predetermined number.

16. The method of claim 15 , further comprising:

updating the correction parameter based on the noise in response to detecting that the noise is greater than a predetermined threshold value.