In one embodiment of the present invention, an active-
matrix type display unit, and a drive method thereof are disclosed. Gate-
bus lines are provided at both top and bottom sides of each row. Two sub-pixels are formed at a region surrounded by two adjacent source-
bus lines and two adjacent gate-
bus lines. At the odd-numbered rows, for the left-side sub-pixel of those two sub-pixels, a scanning
signal is supplied from the top-side gate-bus line, while a video
signal is supplied from the left-side source-bus line. For the right-side sub-pixel, on the contrary, a scanning
signal is supplied from the bottom-side gate-bus line, while a video signal is supplied from the right-side source-bus line. At the even-numbered rows, the gate-bus line from which a scanning signal is supplied is reversed to the case of the odd-numbered rows. The gate-bus lines are sequentially selected one by one, and all the video signal polarities are made the same during each horizontal scanning period.