Display device and method for driving the same

摘要

There is provided a display device capable of suppressing brightness change which can occur at the time of image update in intermission driving. A display control circuit (20) includes a frame memory (101), a coercive refreshing determination section (104), a refreshing circuit (105), and an undershoot circuit (106). The coercive refreshing determination section (104) outputs an active coercive refreshing signal and an active correction instruction signal upon determining that an image is updated. The refreshing circuit (105) receives the active coercive refreshing signal, and then outputs an active output control signal. The frame memory (101) receives the active output control signal, and then outputs an image data. The undershoot circuit (106) performs, if in reception of the active correction instruction signal, a correction by making a subtracting operation to the image data received from the frame memory (101), and then outputs corrected image data.

主权项

1. A display device which comprises a display section including pixel formation portions, and performs an intermission driving of alternately repeating a drive period for refreshing a screen of the display section by writing data voltages which are based on externally received image data to the pixel formation portions; and an intermission period for stopping writing of the data voltages to the pixel formation portions,
the display device further comprising a driving section configured to write the data voltages to the pixel formation portions; and a display controller configured to provide the drive period at a predetermined timing, and control the driving section so that, when an image represented by the externally received image data is updated during the intermission period, the intermission period is aborted and the drive period is performed coercively, wherein the display controller includes: a polarity instruction section configured to control the driving section so that the data voltages in the coercively provided drive period have a same polarity as of the data voltages in an immediately preceding drive period; and a gradation correction section configured to: receive at least part of the image data; correct pixel gradation values for those pixels which constitute the image which is updated during the intermission period but do not have their gradation values changed due to the image update, so that data voltages to be written to their pixel formation portions in the coercively provided drive period have values closer to a baseline common voltage than do data voltages written to said pixel formation portions in an immediately preceding drive period; and output at least part of corrected image data, and wherein the driving section writes to the pixel formation portions data voltages which are based on at least part of said corrected image data that have undergone the gradation value correction made by the gradation correction section, in the coercively provided drive period.