Flexible touch sensitive display device and control method thereof

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. Further, the first predetermined amount of offset is greater than the second predetermined amount of offset.

What is claimed is: 
     
         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.