A display apparatus comprising: a plurality of displays (180a∼180d) arranged adjacently; an image divider configured to divide an original input image into a plurality of sub-images for displaying the original input image split between the plurality of displays; and a plurality of controllers (170a-170d) corresponding to the plurality of displays (180a-180d), and the plurality of controllers (170a-170d) being configured to exchange luminance information of the corresponding plurality of sub-images, each of the plurality of controllers (170a-170d) being configured to: display a moving sub-image on the display corresponding to the controller with a moving image luminance value (Lb) and to decrease the luminance value of a still sub-image displayed on the corresponding display to a still image luminance value (La) sequentially for a predetermined time and display the still image on the display with the still image luminance value (La), characterized in that each of the at least one controller (170a∼170d) is configured to: determine whether some of the sub-images are still images and other of the sub-images are moving images and, in that case, to decrease a luminance value of the moving image displayed on the first display from the moving image luminance value (Lb) to a first luminance value (Lc), the moving image luminance value (Lb) being greater than the still image luminance value (La), wherein the first luminance value (Lc) is a value within a range of the still image luminance value (La) to the moving image luminance value (Lb). and increase the luminance value of the still image displayed on the second display from the still image luminance value (La) to the first luminance value (Lc), to display the still sub-images and the moving sub-images with the same luminance. a plurality of displays (180a∼180d) arranged adjacently; an image divider configured to divide an original input image into a plurality of sub-images for displaying the original input image split between the plurality of displays; and a plurality of controllers (170a-170d) corresponding to the plurality of displays (180a-180d), and the plurality of controllers (170a-170d) being configured to exchange luminance information of the corresponding plurality of sub-images, each of the plurality of controllers (170a-170d) being configured to: display a moving sub-image on the display corresponding to the controller with a moving image luminance value (Lb) and to decrease the luminance value of a still sub-image displayed on the corresponding display to a still image luminance value (La) sequentially for a predetermined time and display the still image on the display with the still image luminance value (La), characterized in that each of the at least one controller (170a∼170d) is configured to: determine whether some of the sub-images are still images and other of the sub-images are moving images and, in that case, to decrease a luminance value of the moving image displayed on the first display from the moving image luminance value (Lb) to a first luminance value (Lc), the moving image luminance value (Lb) being greater than the still image luminance value (La), wherein the first luminance value (Lc) is a value within a range of the still image luminance value (La) to the moving image luminance value (Lb). and increase the luminance value of the still image displayed on the second display from the still image luminance value (La) to the first luminance value (Lc), to display the still sub-images and the moving sub-images with the same luminance. display a moving sub-image on the display corresponding to the controller with a moving image luminance value (Lb) and to decrease the luminance value of a still sub-image displayed on the corresponding display to a still image luminance value (La) sequentially for a predetermined time and display the still image on the display with the still image luminance value (La), characterized in that each of the at least one controller (170a∼170d) is configured to: determine whether some of the sub-images are still images and other of the sub-images are moving images and, in that case, to decrease a luminance value of the moving image displayed on the first display from the moving image luminance value (Lb) to a first luminance value (Lc), the moving image luminance value (Lb) being greater than the still image luminance value (La), wherein the first luminance value (Lc) is a value within a range of the still image luminance value (La) to the moving image luminance value (Lb). and increase the luminance value of the still image displayed on the second display from the still image luminance value (La) to the first luminance value (Lc), to display the still sub-images and the moving sub-images with the same luminance. determine whether some of the sub-images are still images and other of the sub-images are moving images and, in that case, to decrease a luminance value of the moving image displayed on the first display from the moving image luminance value (Lb) to a first luminance value (Lc), the moving image luminance value (Lb) being greater than the still image luminance value (La), wherein the first luminance value (Lc) is a value within a range of the still image luminance value (La) to the moving image luminance value (Lb). and increase the luminance value of the still image displayed on the second display from the still image luminance value (La) to the first luminance value (Lc), to display the still sub-images and the moving sub-images with the same luminance.