Display device using detachable input device and display control method using same

1 . A display device comprising:

a touchscreen configured to detect capacitive touch;

a detachable input device configured to input the capacitive touch to the touchscreen; and

at least one controller,

wherein the at least one controller is configured to:

determine, when the detachable input device is disposed on the touchscreen, a type of the detachable input device disposed on the touchscreen;

output a user interface to be output on the touchscreen based on the type of the detachable input device; and

execute a program based on an operation of the detachable input device when the capacitive touch is input to the touchscreen from the detachable input device,

wherein the detachable input device comprises a physical button layer comprising a plurality of physical buttons, which are transparent windows configured to allow light output from the touchscreen to be output to an outside.

2 . The display device of claim 1 , wherein the physical button layer comprises:

button protrusions disposed to correspond to each of the plurality of physical buttons to input the capacitive touch to the touchscreen; and

a return mechanism disposed to create a gap between the button protrusions and the touchscreen.

3 . A vehicle comprising:

an in-vehicle display disposed inside a vehicle, the in-vehicle display comprising a touchscreen;

a detachable input device configured to input capacitive touch to the touchscreen; and

a display device configured to:

determine, when the detachable input device is disposed on the touchscreen, a type of the detachable input device disposed on the touchscreen;

output a user interface on the touchscreen based on the type of the detachable input device; and

execute a program based on an operation of the detachable input device when the capacitive touch is input to the touchscreen from the detachable input device,

wherein the detachable input device comprises a physical button layer comprising a plurality of physical buttons, which are transparent windows configured to allow light output from the touchscreen to be output to an outside.

4 . A method for controlling a display device, the method comprising:

determining a type of a detachable input device disposed on a touchscreen;

outputting a user interface on the touchscreen based on the type of the detachable input device; and

executing a program based on an operation of the detachable input device when capacitive touch is input to the touchscreen from the detachable input device,

wherein the detachable input device comprises a physical button layer comprising a plurality of physical buttons, which are transparent windows configured to allow light output from the touchscreen to be output to an outside.

5 . The method of claim 4 , wherein the outputting of the user interface on the touchscreen based on the type of the detachable input device comprises:

when the physical button layer is attached, assigning, based on a program being output on the touchscreen, a function of the program to each of a plurality of physical buttons and outputting the same as the user interface.

6 . The method of claim 5 , further comprising:

assigning at least one of functions of AM/PM, AUX, USB, CD, and NAV to each of the physical buttons through the user interface.

7 . The method of claim 6 , wherein the executing of the program based on the operation of the detachable input device when the capacitive touch is input to the touchscreen from the detachable input device comprises:

changing a color of text matching a corresponding one of the assigned physical buttons and a color of the corresponding button, the colors of the text and the button being output on the touchscreen.