Mobile terminal and method of executing call function using the same

A method of operating a mobile terminal having a first touch panel and a second touch panel, the first and second touch panels being movable relative to each other, the method comprising:

• providing content on at least one of the first touch panel and the second touch panel in an open state, wherein in the open state, a prescribed first angle exist between the first touch panel and the second touch panel such that the first touch panel and the second touch panel face substantially in a same direction;
• receiving a call when the content is displayed on at least one of the first touch panel and the second touch panel;
• connecting the received call when the prescribed first angle between the first and second touch panels changes to beyond a prescribed second angle while the mobile terminal is receiving the call, wherein the prescribed first angle and the prescribed second angle are different from each other;
• and
• locking the first and second touch panels when the call is connected.

A display device comprising:

• a first touch panel;
• a second touch panel, the first and second touch panels being movable relative to each other;
• and
• a controller configured to control the first and second touch panels, the controller to provide content on at least one of the first touch panel and the second touch panel in an open status of the first and second touch panels,
• the controller to receive a call when the content is provided on at least one of the first and second touch panels in the open status of the first and second touch panels,
• the controller to connect the received call when the first and second touch panels change from the open status to a closed status while the display device receives the call, and
• the controller to lock the first and second touch panels when the call is connected.

A display device comprising:

• a first touch panel;
• a second touch panel, the first and second touch panels being movable relative to each other;
• and
• a controller to control the first and second touch panels,
• the controller to provide content on at least one of the first touch panel and the second touch panel in an open state, and in the open state, a prescribed first angle exists between the first touch panel and the second touch panel such that the first touch panel and the second touch panel face substantially in a same direction,
• the display device to receive a call when the content is provided on at least one of the first and second touch panels in the open state of the first and second touch panels,
• the display device to connect the received call when the prescribed first angle between the first and second touch panels changes to beyond a prescribed second angle while the display device is receiving the call, and
• the display device to lock the first and second touch panels when the call is connected,
• wherein the prescribed first angle and the prescribed second angle are different from each other.

A display device comprising:

• a first body including a first touch panel;
• a second body including a second touch panel;
• a combining part combining the first body and the second body with each other such that the first and second bodies may move relative to each other;
• and
• a controller configured to switch the display device from a normal mode to a speaker phone mode when the first and second touch panels change from a closed status to an open status while performing a connected call, and the controller to switch the display device from the speaker phone mode to the normal mode when the first and second touch panels change from the open status to the closed status while performing a connected call,
• wherein in the normal mode while in the closed status, a voice signal received from a person performing the connected call is output from the mobile terminal after passing through a receiver, and in the speaker phone mode while in the open status, the voice signal received from the person performing the connected call is output from the mobile terminal after passing through a speaker.