Flexible touch sensitive display device and control method thereof

• US 9,575,512 B2
• Filed: 05/04/2016
• Issued: 02/21/2017
• Est. Priority Date: 04/15/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cho, Eunhyung
• Primary Examiner(s): Sharifi-Tafreshi, Koosha
• Application Number:
  US15/146,401
• Publication Number:
  US 20160246331A1
• Time in Patent Office: 293 Days
• Field of Search: 345/173, 345/174
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/1652 the display being flexible, e.g. mimicking a sheet of paper, or rollable
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A flexible display device including a flexible display unit; and a controller configured to receive a first touch input at a first position on the flexible display unit in a flat state, store, in a memory, first position information of the first touch input that is offset a first predetermined amount from the first position, receive a second touch input at the first position on the flexible display unit in a first bent state, and store, in the memory, second position information of the second touch input that is offset a second predetermined amount from the first position, wherein the first predetermined amount of offset is greater than the second predetermined amount of offset.

Claims

1. A flexible display device comprising:

a flexible display unit; and

a controller configured to;

receive a first touch input at a first position on the flexible display unit in a flat state,

store, in a memory, first position information of the first touch input that is offset a first predetermined amount from the first position,

receive a second touch input at the first position on the flexible display unit in a first bent state, and

store, in the memory, second position information of the second touch input that is offset a second predetermined amount from the first position,

wherein the first predetermined amount of offset is greater than the second predetermined amount of offset.

2. The device according to claim 1, wherein the controller is further configured to:

receive a third touch input at the first position on the flexible display unit in a second bent state, and

store, in the memory, third position information of the third touch input that is offset a third predetermined amount from the first position.

3. The device according to claim 2, wherein the second bent state is a state in which a bending angle of the flexible display unit is greater than that in the first bent state based on an identical bending axis.

4. The device according to claim 2, wherein the first and second position information are offset in a direction from the first position away from a bending axis of the flexible display device.

5. The device according to claim 4, wherein the third position information is offset in a direction from the first position toward the bending axis.

6. The device according to claim 2, wherein the flexible display unit is set to the first bent state when the bending angle is below a threshold angle, and

wherein the flexible display unit is set to the second bent state when the bending angle exceeds the threshold angle.

7. The device according to claim 1, wherein the controller is further configured to store position information of the second touch input that is not offset the second predetermined amount from the first position, when a bending angle at the first position is less than a threshold angle.

8. The device according to claim 7, wherein the threshold angle is the bending angle of the flexible display unit when an angle between eyes of a user looking at the first position and the flexible display unit is substantially a right angle.

9. The device according to claim 1, wherein the first and second predetermined amount of offsets increase as the first position is farther away from where eyes of a user looking at the first position and the flexible display unit are substantially perpendicular to each other.

10. The device according to claim 1, wherein the controller is further configured to apply the touch input to an object displayed at a position corresponding to the stored first or second position information of the touch input.

11. The device according to claim 1, wherein the offset of the second position information is reduced when the touch input in contact with the flexible display unit is dragged from the first position toward a bending axis of the flexible display device.

12. A method of controlling a flexible display device, the method comprising:

receiving, via a controller of the flexible display device, a first touch input at a first position on the flexible display unit in a flat state;

storing, in a memory, first position information of the first touch input that is offset a first predetermined amount from the first position;

receiving, via the controller, a second touch input at the first position on the flexible display unit in a first bent state; and

storing, in the memory, second position information of the second touch input that is offset a second predetermined amount from the first position,

wherein the first predetermined amount of offset is greater than the second predetermined amount of offset.

13. The method according to claim 12, further comprising:

receiving a third touch input at the first position on the flexible display unit in a second bent state; and

storing, in the memory, third position information of the third touch input that is offset a third predetermined amount from the first position.

14. The method according to claim 13, wherein the second bent state is a state in which a bending angle of the flexible display unit is greater than that in the first bent state based on an identical bending axis.

15. The method according to claim 13, wherein the first and second position information are offset in a direction from the first position away from a bending axis of the flexible display device.

16. The method according to claim 15, wherein the third position information is offset in a direction from the first position toward the bending axis.

17. The method according to claim 13, wherein the flexible display unit is set to the first bent state when the bending angle is below a threshold angle, and

wherein the flexible display unit is set to the second bent state when the bending angle exceeds the threshold angle.

18. The method according to claim 12, wherein the controller is further configured to store position information of the second touch input that is not offset the second predetermined amount from the first position, when a bending angle at the first position is less than a threshold angle.

19. The method according to claim 18, wherein the threshold angle is the bending angle of the flexible display unit when an angle between eyes of a user looking at the first position and the flexible display unit is substantially a right angle.

20. The method according to claim 12, wherein the first and second predetermined amount of offsets increase as the first position is farther away from where eyes of a user looking at the first position and the flexible display unit are substantially perpendicular to each other.