| 摘要 |
Grayscale values for previous and current frames are different, and therefore, an overshoot voltage, which has a higher absolute value than a signal voltage, are applied to a data signal line. Next, in a second drive frame, normal drive is performed, so that a signal voltage of the same polarity as the overshoot voltage is written to the data signal line. Moreover, in a first drive frame of a third pause drive period, the grayscale values for the previous and current frames are equal, and also greater than or equal to a boundary value, and therefore, undershoot drive is performed. An undershoot voltage, which has a lower absolute value than a signal voltage, is applied to the data signal line. Next, in a second drive frame, normal drive is performed, so that a signal voltage of the same polarity as the undershoot voltage is written to the data signal line. |
| 主权项 |
1. A liquid crystal display device formed on an insulating substrate and performing pause drive in an alternating-voltage drive mode, the device comprising:
a plurality of scanning signal lines; a plurality of data signal lines crossing each of the scanning signal lines; pixel forming portions formed at intersections of the scanning signal lines and the data signal lines; a correction circuit for outputting either a corrected image signal obtained by subjecting an input image signal to a tone emphasizing process for emphasizing a temporal change in the signal or an image signal being the input image signal not subjected to the tone emphasizing process; a scanning signal line driver circuit for sequentially selecting and scanning the scanning signal lines; a data signal line driver circuit for writing signal voltages to the data signal lines in accordance with the image signal, as well as at least one of first and second correction voltages in accordance with the corrected image signal, the first correction voltage having a higher absolute value than the signal voltage, the second correction voltage having a lower absolute value than the signal voltage; and a timing control circuit for controlling the scanning signal line driver circuit and the data signal line driver circuit, wherein, the pause drive alternatingly repeats a drive period consisting of a plurality of drive frames and a pause period following the drive period and lasting until the start of the next drive period, the correction circuit outputs the corrected image signal to the data signal line driver circuit at least during the first drive frame of the drive period and also outputs the image signal to the data signal line driver circuit during the last drive frame, and the data signal line driver circuit writes the first or second correction voltage at least once to the data signal line, and further, writes a signal voltage having the same polarity as the written first or second correction voltage, once to the data signal line. |
