Hitachi Displays, Ltd.

Takashi Tsuyuki

Hiroyuki Takahashi

An image display device includes a first display panel having a substrate with first scanning lines, first signal lines which intersect the first scanning lines, and first switching elements, a second display panel having another substrate with second scanning lines, second signal lines which intersect the second scanning lines, and second switching elements, and a flexible printed circuit board connecting the first display panel with the second display panel. The image display device drives the first display panel in a line inversion mode when only the first display panel displays images, drives the second display panel in a frame inversion mode when only the second display panel displays images, and drives the first display panel and the second display panel in the line inversion mode when both of the first display panel and second display panel display images.

Display device

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.

Growing community of inventors

Sagamihara, Japan

Takashi Tsuyuki