A display device is provided. The display device includes a display, a first communicator configured to communicate with an external device, a second communicator configured to communicate with a remote controller, and a processor configured to control the display to display an image corresponding to an image signal received from the external device through the first communicator, and the processor, in response to a control signal being received from the remote controller through the second communicator while the image is displayed on the display, controls the display to display a user interface (UI) for changing a channel, and in response to the control signal being received from the remote controller through the second communicator while an image which includes a specific object is displayed on the display, controls the display not to display the UI for changing a channel.