Abstract: The disclosed portable terminal device is provided with: a first display unit (20A) having a first display screen (21A); a second display unit (20B) having a second display screen (21B) juxtaposed to the first display screen (21A); an enlargement frame display control unit that controls the first display screen (21A) in a manner so as to display a frame to be enlarged on one of a plurality of areas within the first display screen (21A); an enlarged information display control unit that controls the second display screen (21B) in a manner so as to display in an enlarged manner on the second display screen (21B) information from the first display screen (21A) displayed within the enlargement frame; and a plurality of area selection keys disposed corresponding to the plurality of areas of the first display screen (21A).

Abstract: The disclosed portable terminal device is provided with: a first display unit (20A) having a first display screen (21A); a second display unit (20B) having a second display screen (21B) juxtaposed to the first display screen (21A); an enlargement frame display control unit that controls the first display screen (21A) in a manner so as to display a frame to be enlarged on one of a plurality of areas within the first display screen (21A); an enlarged information display control unit that controls the second display screen (21B) in a manner so as to display in an enlarged manner on the second display screen (21B) information from the first display screen (21A) displayed within the enlargement frame; and a plurality of area selection keys disposed corresponding to the plurality of areas of the first display screen (21A).

Abstract: A mobile terminal device comprises: a first main display unit that has a first display screen; a second main display unit that has a second display screen which can display equivalent to the first display screen, the second main display unit being connected so as to be capable of being juxtaposed to the first main display unit; a display state detection unit that detects whether or not both the first display screen and the second display screen are in a state where simultaneous display is possible; an operation target screen selection unit that executes a function to select, among the first display screen and the second display screen, a screen that is a target for operation; and an operation target screen switching icon display unit that executes a function to display an operation target screen switching icon at least on the screen selected by the operation target screen selection unit, when the display state detection unit detects that both the first display screen and the second display screen are in a sta