Image display device and image display system

1. An image display device comprising:

a display configured to output content;

a charger configured to charge a remote controller to control the image display device;

a user input interface configured to receive power on/off signals from the remote controller; and

a controller configured to control power use of the user input interface depending on whether the remote controller is being charged by the charger,

wherein, when the remote controller is being charged by the charger and a power to the image display device is off, the controller is configured to turn off a I/R (infrared) standby function of the user input interface for receiving a power-on signal, and

when the remote controller is being charged by the charger, the controller is configured to turn on at least one sensor for receiving a control signal for controlling the image display device.

2. The image display device of claim 1 , wherein, when the remote controller is being charged by the charger and power to the image display device is off, the controller is configured to control the power use of the user input interface to receive the power-on signal.

3. The image display device of claim 1 , wherein, when the remote controller is being charged by the charger, the controller is configured to put at least one sensor into an ON state to be capable of receiving a control signal.

4. The image display device of claim 3 , wherein, when the remote controller is not being charged by the charger while power to the image display device is off, the controller is configured to output a message window on the display requesting an input from the remote controller to switch the power to the ON state while controlling the power use of the user input interface to receive a power-on signal.

5. The image display device of claim 4 , wherein, when the remote controller is removed from the charger, the controller is configured to output a message window on the display requesting an input from the remote controller to switch at least one sensor to the ON state to receive a control signal.

6. The image display device of claim 3 , wherein the sensor is at least one of a touch sensor, an audio sensor, a location sensor, or a motion recognition sensor.

7. The image display device of claim 1 , wherein, when the remote controller is being charged by the charger, the controller is configured to pair the image display device with the remote controller.

8. The image display device of claim 7 , wherein the controller is configured to output on the display content chosen according to the remote controller paired with the image display device.

9. The image display device of claim 1 , wherein, when an event occurs to the remote controller while the remote controller is being charged, the controller is configured to output on the display content corresponding to the event.

10. The image display device of claim 9 , wherein, when the event occurs to the remote controller while the remote controller is being charged, the controller is configured to control the user input interface to receive a control signal for the content corresponding to the event from another remote controller.

11. The image display device of claim 1 , wherein, once the remote controller is removed from the charger, the controller calculates the distance between the remote controller and the image display device and automatically controls the audio volume based on the calculated distance.

12. The image display device of claim 1 , wherein, when the remote controller is a plurality of remote controllers that are being simultaneously charged, the controller is configured to pair the image display device with each remote controller of the plurality of remote controllers.

13. The image display device of claim 12 , wherein the controller is configured to output on the display content chosen according by each remote controller of remote controllers paired with the image display device.

14. The image display device of claim 1 , wherein the display is a flexible display.

15. The image display device of claim 1 , wherein the image display device is a TV.

16. An image display system comprising:

at least one remote controller; and

an image display device including:

a display configured to output content;

a charger configured to charge the remote controller to control the image display device;

a user input interface configured to receive power on/off signals from the remote controller; and

a controller configured to control power use of the user input interface depending on whether the remote controller is being charged by the charger,

wherein, when the remote controller is being charged by the charger and a power to the image display device is off, the controller is configured to turn off a I/R (infrared) standby function of the user input interface for receiving a power-on signal, and

when the remote controller is being charged by the charger and the power to the image display device is on, the controller is configured to turn on at least one sensor for receiving a control signal for controlling the image display device.

17. The image display system according to claim 16 , wherein the at least one remote controller is a mobile terminal capable of receiving a text message.

18. The image display system according to claim 16 , wherein the image display device is a TV.

19. The image display system of claim 16 , wherein, when the remote controller is being charged by the charger and power to the image display device is off, the controller is configured to control the power use of the user input interface to receive the power-on signal.

20. The image display system of claim 16 , wherein, when the remote controller is being charged by the charger, the controller is configured to put at least one sensor into an ON state to be capable of receiving a control signal.