Pair of display devices and display system

A pair of display devices comprising

• a first display device and a second display device arranged along an array direction, wherein
• the first display device and the second display device each comprise:
• a display panel having a display area in which a plurality of sub-pixels are arrayed in a matrix having a row-column configuration along a row direction and a column direction;
• a plurality of gate lines provided to the display panel, extending along the row direction, and arrayed along the column direction;
• a plurality of signal lines provided to the display panel, extending along the column direction, and arrayed along the row direction;
• and
• a drive circuit configured to output sub-pixel signals for displaying an image in the display area to the sub-pixels via the signal lines and drive the sub-pixels via the gate lines,
• the sub-pixels include a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels having different colors,
• the first sub-pixels, the second sub-pixels, and the third sub-pixels are arranged in the display area of the first display device such that the first sub-pixel, the second sub-pixel, and the third sub-pixel are repeatedly disposed along the row direction in the order as listed and that the first sub-pixel, the second sub-pixel, and the third sub-pixel are repeatedly disposed along the column direction in the order as listed,
• an arrangement of the sub-pixels in the display area of the first display device and an arrangement of the sub-pixels in the display area of the second display device are line symmetrical with respect to a virtual line orthogonal to the array direction, and
• an arrangement of the signal lines of the first display device and an arrangement of the signal lines of the second display device are line symmetrical with respect to the virtual line.