Display device, electronic device comprising same, and drive method for display device

摘要

Provided is a display device capable of suppressing reduction in display quality even when pause drive is performed, while allowing the intensity of a light source to be changed in accordance with images to be displayed.;In a liquid crystal display device with the CABC function, 7.5-Hz pause drive is performed. A transition period is provided in which images to be displayed are changed gradually from bright image X to dark image Y. In the transition period, the duration of a sub-transition period is five frames. Once the transition period starts, the duration of a vertical display period changes from eight frames to one frame. That is, 7.5-Hz pause drive switches to 60-Hz normal drive. In this manner, the duration of the vertical display period is set to be less than or equal to the duration of the sub-transition period, so that screen refresh is always performed in each sub-transition period of the transition period.

主权项

1. A display device with a display portion and a light source, the display portion including a plurality of image forming portions, the light source illuminating the display portion and having an intensity changeable in accordance with images to be displayed on a screen of the display portion, the display device comprising:
a display drive portion for driving the display portion; a light source drive portion for driving the light source; and a control portion for controlling the display drive portion in accordance with externally received data, wherein, the control portion includes a refresh rate control portion for controlling a refresh rate determined in accordance with the proportion of a refresh period for refreshing the screen and a no-refresh period for pausing the refreshing of the screen, and in a transition period in which the intensity of the light source gradually changes in accordance with gradual changes of the images to be displayed from a first image to a second image, a first period from the start of the refresh period to the start of another refresh period immediately following the refresh period has a duration less than or equal to a duration of a second period corresponding to a phase of the change in intensity of the light source.