Variably deformable display device with click button module

1. A variable display device, comprising:

a variable display that displays an image and that is variably deformable by an external force; and

at least one click button module attached onto a bottom side of the variable display to correspond to a predetermined touch button region of the variable display, the bottom side of the variable display being a side opposite a side of the variable display that displays the image,

wherein the click button module includes:

an actuator housing directly attached onto the bottom side of the variable display, the actuator housing being press-deformable together with the touch button region of the variable display,

a metal dome switch located below the actuator housing, wherein the actuator housing includes an actuator in a form of a protrusion that presses the metal dome switch when the click button module is pressed, the metal dome switch being elastically deformable when pressed by the protrusion, and

a support plate located below the metal dome switch to support the metal dome switch and input a signal through the metal dome switch.

2. The variable display device as claimed in claim 1 , wherein:

the metal dome switch includes:

a metal dome sheet fixed to the support plate and having a dome shape contacting the actuator, and

a switch electrode located on a lower surface of the metal dome sheet.

3. The variable display device as claimed in claim 2 , wherein:

the support plate includes a rigid PCB having a touch electrode that contacts the switch electrode when the click button module is pressed.

4. The variable display device as claimed in claim 1 , wherein:

an upper surface of the actuator housing is flatly attached onto the bottom end of the variable display.

5. A variable display device, comprising:

a variable display that displays an image and that is variably deformable by external force; and

at least one click button module attached onto a bottom side of the variable display to correspond to a predetermined touch button region of the variable display, the bottom side of the variable display being a side opposite a side of the variable display that displays the image, wherein:

the click button module includes an actuator housing directly attached onto the bottom side of the variable display in the touch button region, and a metal dome switch located below the actuator housing, the metal dome switch being pressable and elastically deformable by the actuator housing, the actuator housing further including:

a protrusion that protrudes convexly into the touch button region such that the variable display in the touch button region includes a protruding surface that protrudes convexly upward by the protrusion of the click button module, and

an actuator that integrally protrudes from a lower surface of the actuator housing, wherein,

the actuator housing is press-deformable together with the protruding surface of the variable display in the touch button region and the click button module further includes:

a metal dome switch located below the actuator housing, the metal dome switch being pressable and elastically deformable by the actuator housing, and

a support plate located below the metal dome switch to support the metal dome switch and input a signal through the metal dome switch, wherein,

the actuator presses the metal dome switch.

6. The variable display device as claimed in claim 5 , wherein:

a display area of the variable display includes a front region and a side region, and

the protruding surface is located in at least one of the front region and side region.

7. The variable display device as claimed in claim 6 , wherein:

the protruding surface is located in the side region.

8. The variable display device as claimed in claim 5 , wherein:

the metal dome switch includes:

a metal dome sheet fixed to the support plate and having a dome shape contacting the actuator, and

a switch electrode on the lower surface of the metal dome sheet.

9. The variable display device as claimed in claim 8 , wherein:

the support plate includes a rigid PCB having a touch electrode contacting the switch electrode.

10. The variable display device as claimed in claim 1 , wherein:

the variable display includes a flexible display.

11. The variable display device as claimed in claim 1 , wherein:

the variable display includes a stretchable display.

12. The variable display device as claimed in claim 1 , wherein:

the variable display device is a wearable device.

13. The variable display device as claimed in claim 1 , wherein:

the variable display includes an organic light emitting element.