The display device of the present invention includes a display area having a plurality of pixels arranged in rows and columns, at least one source driving device providing power or electric charges for the pixels through source lines, at least one gate driving device controlling the pixels through gate lines, and a boundary switch separating the display area into a plurality of sub-display areas and placed between the sub-display areas to connect or disconnect the source lines and/or the gate lines. When the boundary switch disconnects the source lines and/or the gate lines, the sub-display area directly connecting with the source driving device or the gate driving device will be driven.