LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A liquid crystal display device that has a number of pixels, which are arranged in columns and rows to form a matrix pattern, the device comprising:
- an active-matrix substrate that includes pixel electrodes, each of which is provided for an associated one of the pixels, a plurality of scan lines that run in a row direction, and a plurality of signal lines that run in a column direction;
a counter substrate that faces the active-matrix substrate;
a liquid crystal layer that is interposed between the active-matrix substrate and the counter substrate; and
a signal line driver that applies a positive or negative grayscale voltage as a display signal to each said signal line,wherein those pixels include m kinds of (where m is an even number that is equal to or greater than four) pixels that display mutually different colors, andwherein the pixels are arranged so that n out of the m kinds of pixels (where n is an even number that is equal to or smaller than m and is a divisor of m) are repeatedly arranged in the same order in the row direction, andwherein each of the rows of pixels that are formed by those pixels includes multiple groups of pixels, to each of which n pixels that are arranged consecutively in the row direction belong, grayscale voltages of mutually opposite polarities being applied through associated signal lines to the pixel electrodes of two arbitrary pixels that are adjacent to each other in each said group of pixels, andwherein in two arbitrary ones of those groups of pixels that are adjacent to each other in the row direction, grayscale voltages of mutually opposite polarities are applied through their associated signal lines to the pixel electrodes of pixels that display the same color, andwherein the signal lines include at least one pair of signal lines that are adjacent to each other and that supply grayscale voltages of the same polarity, andwherein the source-drain capacitance of the pixels that are located between the pair of signal lines is smaller than the source-drain capacitance of the other pixels.
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Accused Products
Abstract
In the liquid crystal display device (100) of this invention, pixels include m kinds of (where m is an even number and m≧4) pixels (R, G, B and Y) that display different colors. The pixels are arranged so that n of the m kinds of pixels (where n is an even number, n≦m and n is a divisor of m) are repeatedly arranged in the same order in the row direction. Each row of pixels formed by those pixels includes groups of pixels, to each of which n pixels arranged consecutively in the row direction belong. Grayscale voltages of opposite polarities are applied through associated signal lines (13) to the pixel electrodes (11) of two arbitrary adjacent pixels in each group of pixels. In two arbitrary groups of pixels that are adjacent in the row direction, grayscale voltages of opposite polarities are applied through their associated signal lines to the pixel electrodes of pixels that display the same color. The signal lines include at least one pair of adjacent signal lines (13p) to supply grayscale voltages of the same polarity. The source-drain capacitance of the pixels located between the pair of signal lines is smaller than that of the other pixels. The present invention can improve the display quality of a liquid crystal display device, of which each picture element is defined by an even number of pixels.
36 Citations
13 Claims
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1. A liquid crystal display device that has a number of pixels, which are arranged in columns and rows to form a matrix pattern, the device comprising:
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an active-matrix substrate that includes pixel electrodes, each of which is provided for an associated one of the pixels, a plurality of scan lines that run in a row direction, and a plurality of signal lines that run in a column direction; a counter substrate that faces the active-matrix substrate; a liquid crystal layer that is interposed between the active-matrix substrate and the counter substrate; and a signal line driver that applies a positive or negative grayscale voltage as a display signal to each said signal line, wherein those pixels include m kinds of (where m is an even number that is equal to or greater than four) pixels that display mutually different colors, and wherein the pixels are arranged so that n out of the m kinds of pixels (where n is an even number that is equal to or smaller than m and is a divisor of m) are repeatedly arranged in the same order in the row direction, and wherein each of the rows of pixels that are formed by those pixels includes multiple groups of pixels, to each of which n pixels that are arranged consecutively in the row direction belong, grayscale voltages of mutually opposite polarities being applied through associated signal lines to the pixel electrodes of two arbitrary pixels that are adjacent to each other in each said group of pixels, and wherein in two arbitrary ones of those groups of pixels that are adjacent to each other in the row direction, grayscale voltages of mutually opposite polarities are applied through their associated signal lines to the pixel electrodes of pixels that display the same color, and wherein the signal lines include at least one pair of signal lines that are adjacent to each other and that supply grayscale voltages of the same polarity, and wherein the source-drain capacitance of the pixels that are located between the pair of signal lines is smaller than the source-drain capacitance of the other pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification