| 摘要 |
In a liquid crystal display device adopting a time-division scheme to improve viewing angle characteristics, the occurrence of horizontal lines on a screen is suppressed. When first output gray scales are obtained for one-line data, the sum total of differences between “source voltages for a horizontal scanning period immediately before a horizontal scanning period during which a processing target line is placed in a selected state” and “source voltages determined based on the first output gray scales obtained by a gray scale value obtaining unit” for all source bus lines is determined (step S110). Then, based on the amount of CS ripple corresponding to the sum total determined at step S110, correction addition/subtraction values are obtained from a polarity-by-polarity background look-up table, for the respective picture elements included in the processing target line (step S120). Then, second output gray scales are determined in an addition/subtraction process of the first output gray scales and the correction addition/subtraction values (step S130). |
| 主权项 |
1. A liquid crystal display device that includes a display unit including: a plurality of video signal lines for transmitting video signals; a plurality of scanning signal lines arranged so as to intersect the plurality of video signal lines, and selected horizontal scanning period by horizontal scanning period; a plurality of pixel electrodes provided at respective intersections of the plurality of video signal lines and the plurality of scanning signal lines; and a plurality of auxiliary capacitance wiring lines arranged so as to intersect the plurality of video signal lines to form auxiliary capacitances with the plurality of pixel electrodes, and that displays an image based on an input signal on the display unit by applying the video signals to the plurality of video signal lines such that voltages determined based on the input signal representing gray scale values are provided to the pixel electrodes, the liquid crystal display device comprising:
an output gray scale correction processing unit that determines second output gray scales associated with video signal voltages to be applied to the plurality of video signal lines, by correcting first output gray scales determined based on line data on a line-data-by-line-data basis, the line data being data for one horizontal scanning period included in the input signal, wherein when a horizontal scanning period during which the video signals are to be applied to the plurality of video signal lines based on line data subjected to a process of determining the second output gray scales is defined as a processing target horizontal scanning period, a horizontal scanning period immediately before the processing target horizontal scanning period is defined as a preceding horizontal scanning period, and a sum total of differences, for the plurality of video signal lines, between video signal voltages associated with second output gray scales determined based on line data for the preceding horizontal scanning period and video signal voltages associated with first output gray scales determined based on line data for the processing target horizontal scanning period is defined as a sum total of voltage differences, the output gray scale correction processing unit determines the second output gray scales by correcting the first output gray scales, based on the sum total of voltage differences. |
