In a driving circuit of a display device, a period for writing to pixels is shortened while an increase in size of an integrated circuit is avoided. In a first period of the writing period, the pixel is charged up with a gradation potential of a particular node in a node group that includes a node which is at an objective gradation potential. In the first period, a plurality of lines corresponding to the number of nodes included in the node group are connected in parallel between the particular node and the pixel. In a second period of the data-writing period, this parallel connection is cancelled and only the node corresponding to the objective gradation potential is connected to the pixel.