Patent attributes
An image display device includes a first display device and a second display device, which is constituted of a smaller number of signal lines than that of the first display device. The signal lines of both display devices are driven by a common drive circuit. The display of images is alternatively or simultaneously performed using these two display devices. To achieve a suppression of vertical smear and low power consumption in this type of device, the images are displayed in an N-line (N being an integer of 1 or more) inversion drive mode when the display is performed on only the first display device and when the display is performed on both of the first display device and the second display device, while the images are displayed in a frame inversion drive mode when the display is performed only on the second display device.
