Kinds of display control method and a display device

The present invention discloses a kind of display apparatus, comprising: a first memory for storing a program required for the single-screen operation state; a second memory for storing a plurality of programs required in operating state screen; transfer port for receiving the other signal transmitted from the display apparatus supporting; a controller for receiving a signal transmission port and determines whether the present display device and other ancillary equipment interconnection is displayed; if yes, then close the first memory, the second memory is turned on, the display of the present equipment and other supporting multi-screen display device composed of interconnected devices, in multi-screen operation state; if not, turn on the first memory, a second memory to close the present device to work independently as a single display screen device, a single screen in the operating state. The present invention also discloses a method of controlling a display device types. Embodiment of the present invention, the display device can work both independently and with other supporting multi-screen apparatus composed of a display device, without disturbing each other two operating states, can operate normally.