The present disclosure provides a display device, a method for controlling the display device, and a display apparatus. The display device includes a plurality of source signal output terminals, a plurality of data lines, a plurality of scan lines, a pixel unit array, and a switching module. When the display device displays a three-dimensional picture, a source signal output terminal provides a data signal to only one sub-pixel. When the display device displays a two-dimensional picture, a source signal output terminal simultaneously provides data signals to two rows and columns of four sub-pixels of the same luminous color.