Liquid crystal display device
First Claim
1. A liquid crystal display device comprising a liquid crystal panel having a plurality of scanning electrodes including first and second scanning electrodes, a plurality of signal electrodes including a first signal electrode, and a liquid crystal layer interposed between the plurality of scanning electrodes and the plurality of signal electrodes, display being conducted based on display data including first and second display data, the liquid crystal display device further comprising:
- scanning electrode driving means which outputs a scanning voltage to the first scanning electrode in a first scanning line period and outputs a scanning voltage to the second scanning electrode in a second scanning line period following the first scanning line period; and
signal electrode driving means which outputs a first voltage corresponding to the first display data to the first signal electrode in the first scanning line period and outputs a second voltage corresponding to the second display data to the first signal electrode in the second scanning line period,wherein the signal electrode driving means compares the first display data and the second display data and, when the first display data and the second display data are different, outputs a third voltage for correcting a reduction of an effective voltage of the second voltage for a correction duration in the second scanning line period.
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Accused Products
Abstract
A liquid crystal display device includes a liquid crystal panel having a plurality of scanning electrodes including first and second scanning electrodes, a plurality of signal electrodes including a first signal electrode, and a liquid crystal layer. A display is generated based on display data including first and second display data. The liquid crystal display device further includes a scanning electrode driver which outputs a scanning voltage to the first scanning electrode in a first scanning period and outputs a scanning voltage to the second scanning electrode in a second scanning period following the first scanning period. A signal electrode driver outputs a first voltage corresponding to the first display data to the first signal electrode in the first scanning period and outputs a second voltage corresponding to the second display data to the first signal electrode in the second scanning period. The signal electrode driver compares the first display data and the second display data and, when the first display data and the second display data are different, outputs a third voltage for correcting a reduction of an effective voltage of the second voltage for a correction duration in the second scanning period.
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Citations
14 Claims
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1. A liquid crystal display device comprising a liquid crystal panel having a plurality of scanning electrodes including first and second scanning electrodes, a plurality of signal electrodes including a first signal electrode, and a liquid crystal layer interposed between the plurality of scanning electrodes and the plurality of signal electrodes, display being conducted based on display data including first and second display data, the liquid crystal display device further comprising:
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scanning electrode driving means which outputs a scanning voltage to the first scanning electrode in a first scanning line period and outputs a scanning voltage to the second scanning electrode in a second scanning line period following the first scanning line period; and signal electrode driving means which outputs a first voltage corresponding to the first display data to the first signal electrode in the first scanning line period and outputs a second voltage corresponding to the second display data to the first signal electrode in the second scanning line period, wherein the signal electrode driving means compares the first display data and the second display data and, when the first display data and the second display data are different, outputs a third voltage for correcting a reduction of an effective voltage of the second voltage for a correction duration in the second scanning line period. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for driving a liquid crystal display device comprising a liquid crystal panel having a plurality of scanning electrodes including first and second scanning electrodes, a plurality of signal electrodes including a first signal electrode, and a liquid crystal layer interposed between the plurality of scanning electrodes and the plurality of signal electrodes, display being conducted based on display data including first and second display data, the method comprising the steps of:
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(A) allowing scanning electrode driving means to output a scanning voltage to the first scanning electrode in a first scanning line period and output a scanning voltage to the second scanning electrode in a second scanning line period following the first scanning line period; (B) allowing signal electrode driving means to output a first voltage corresponding to the first display data to the first signal electrode in the first scanning line period and output a second voltage corresponding to the second display data to the first signal electrode in the second scanning line period; (C) allowing the signal electrode driving means to compare the first display data and the second display data; and (D) allowing the signal electrode driving means to output a third voltage for correcting a reduction of an effective voltage of the second voltage for a correction duration in the second scanning line period when the first display data and the second display data are different. - View Dependent Claims (9, 10, 11)
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12. A liquid crystal display device comprising a liquid crystal panel having a liquid crystal layer between a plurality of signal electrodes and a plurality of scanning electrodes formed to cross each other, the device further comprising:
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signal electrode driving means for applying a voltage corresponding to display data for displaying images on the liquid crystal panel to the plurality of signal electrodes; scanning electrode driving means for applying a scanning voltage to the plurality of scanning electrodes sequentially; and voltage generating means for supplying voltages required for driving the signal electrode driving means and the scanning electrode driving means to the signal electrode driving means and the scanning electrode driving means, wherein the signal electrode driving means detects whether or not the display data corresponding to a current scanning line period has changed from the display data corresponding to a scanning line period immediately before the current scanning line period for each of the plurality of signal electrodes and outputs, when no change is detected, a normal signal voltage level or, when a change is detected, a correction reference voltage for correcting a reduction of an effective voltage caused by waveform dulling due to the change, to each of the plurality of signal electrodes for a predetermined duration in the current scanning line period. - View Dependent Claims (13, 14)
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Specification