LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
First Claim
1. A liquid crystal display device, comprising:
- a liquid crystal panel that displays images using a plurality of pixels each including red, green and blue sub-pixels;
a gate driving portion that supplies a gate signal to the liquid crystal panel;
a data driving portion that supplies a data signal to the liquid crystal panel; and
a timing control portion that compares difference of gray level between image signals corresponding to the red, green and blue sub-pixels with a first threshold value and compares difference of gray level between the image signals corresponding to the red, green and blue sub-pixels of neighboring pixels of the plurality of pixels in order to judge a type of the image signals, and drives the data driving portion in different methods according to the type of the image signals.
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Abstract
A liquid crystal display device includes: a liquid crystal panel that displays images using a plurality of pixels each including red, green and blue sub-pixels; a gate driving portion that supplies a gate signal to the liquid crystal panel; a data driving portion that supplies a data signal to the liquid crystal panel; and a timing control portion that compares difference of gray level between image signals corresponding to the red, green and blue sub-pixels with a first threshold value and compares difference of gray level between the image signals corresponding to the red, green and blue sub-pixels of neighboring pixels of the plurality of pixels in order to judge type of the image signals, and drives the data driving portion in different methods according to the type of the image signals.
21 Citations
10 Claims
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1. A liquid crystal display device, comprising:
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a liquid crystal panel that displays images using a plurality of pixels each including red, green and blue sub-pixels; a gate driving portion that supplies a gate signal to the liquid crystal panel; a data driving portion that supplies a data signal to the liquid crystal panel; and a timing control portion that compares difference of gray level between image signals corresponding to the red, green and blue sub-pixels with a first threshold value and compares difference of gray level between the image signals corresponding to the red, green and blue sub-pixels of neighboring pixels of the plurality of pixels in order to judge a type of the image signals, and drives the data driving portion in different methods according to the type of the image signals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of driving a liquid crystal display device, comprising:
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comparing difference of gray level between image signals corresponding to red, green and blue sub-pixels of a pixel with a first threshold value through a timing control portion; comparing difference of gray level between the image signals corresponding to the red, green and blue sub-pixels of the pixel and a neighboring pixel through the timing control portion; judging a type of the image signals through the timing control portion according to the comparison result; supplying from the timing control portion a data control signal and RGB data signals to a data driving portion and a gate control signal to a gate driving portion according to the type of the image signals; supplying from the gate and data driving portions gate and data signals, respectively, to a liquid crystal panel; and displaying an image using the gate and data signals through the liquid crystal panel. - View Dependent Claims (8, 9, 10)
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Specification