KR20070003538A - Driving integrated circuit of liquid crystal display device and method of driving the same - Google Patents

Abstract

A method and an integrated circuit for driving a liquid crystal display device are provided to suppress a crosstalk phenomenon by alternately applying different polarity control signals to a data driving IC. An integrated circuit for driving a liquid crystal display device includes at least one first driving IC(250) and at least one second driving IC (260). The first driving IC(Integrated Circuit) receives a first polarity control signal. The second driving IC receives a second polarity control signal. Each of the first and second driving ICs adjusts the polarity of a video signal according to the first and second polarity control signals. The first and second polarity control signals have opposite polarities. The first driving IC drives a first pixel portion, while the second driving IC drives a second pixel portion, which has a polarity different from that of the first pixel portion.

Description

Liquid crystal display driving integrated circuit and driving method {DRIVING INTEGRATED CIRCUIT OF LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME}

1 is a schematic view showing a general liquid crystal display device.

2 is a driving schematic diagram for explaining a one-dot inversion driving method of a liquid crystal display according to the prior art;

FIG. 3 is a schematic diagram illustrating a pixel voltage polarity form in the driving method of the liquid crystal display of FIG. 2; FIG.

4 is a schematic view of driving a horizontal 2-dot inversion method of a liquid crystal display according to the related art;

FIG. 5 is a schematic diagram illustrating a pixel voltage polarity form in the driving method of the liquid crystal display of FIG. 4; FIG.

FIG. 6 is a driving schematic diagram illustrating a driving integrated circuit and a method thereof of a liquid crystal display device by applying a one-dot inversion driving method according to an exemplary embodiment of the present invention. FIG.

FIG. 7 is a schematic diagram illustrating a pixel voltage polarity form in the driving method of the liquid crystal display of FIG. 6; FIG.

FIG. 8 is a driving schematic diagram illustrating a driving integrated circuit and a method thereof of a liquid crystal display by applying a horizontal two-dot inversion driving method according to another exemplary embodiment of the present invention. FIG.

FIG. 9 is a schematic diagram illustrating a pixel voltage polarity form in the driving method of the liquid crystal display of FIG. 8; FIG.

-Code description of main parts of drawing-

240, 340: LCD panel 241, 341: odd-numbered polarity control signal

242, 342: Even polarity control signal

250, 350: odd-numbered data driving integrated circuit

260, 360: Even-numbered data driving integrated circuit 270, 370: Line character

W: White B: Black

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving integrated circuit and a driving method of a liquid crystal display device. More particularly, when a character image is partially displayed in a liquid crystal display device, crosstalk is generated due to the influence of a signal between pixels according to a signal. The present invention relates to a liquid crystal display driving integrated circuit and a driving method.

In general, the liquid crystal display device displays an image by adjusting light transmittance for each liquid crystal cell according to a video signal. To this end, the liquid crystal display device includes a liquid crystal panel in which liquid crystal cells are arranged in a matrix, and a driving integrated circuit for driving the liquid crystal panel.

Here, the liquid crystal cells are positioned in the area where the gate lines and the data lines cross each other in the liquid crystal panel. Each of the liquid crystal cells is provided with pixel electrodes and a common electrode for applying an electric field.

Each of the pixel electrodes is connected to one of the data lines via a thin film transistor which is a switching element. The gate terminal of the thin film transistor is connected to one of the gate lines for causing the video signal to be applied to the pixel electrodes for one line. The driving integrated circuit includes a gate driving integrated circuit for driving the gate lines, a data driving integrated circuit for driving the data lines, and a common voltage generator for driving the common electrode.

The gate driving integrated circuit sequentially supplies the scanning signal, that is, the gate signal to the gate lines, to sequentially drive the liquid crystal cells on the liquid crystal panel by one line.

In addition, the data driving integrated circuit supplies a video signal to each of the data lines whenever a gate signal is supplied to any one of the gate lines.

The common voltage generator supplies a common voltage signal to the common electrode. Accordingly, the liquid crystal display device displays an image by adjusting the light transmittance by changing the liquid crystal array state between the pixel electrode and the common electrode according to the video signal for each liquid crystal cell.

A general liquid crystal display device will be described below with reference to FIG. 1.

1 is a schematic view showing a general liquid crystal display device.

Referring to FIG. 1, a general liquid crystal display device includes a liquid crystal panel 31 in which liquid crystal cells are arranged in a matrix form, and a gate driving integrated circuit for driving gate lines GL1 to GLn of the liquid crystal panel 31. 13 and a data driving integrated circuit 23 for driving the data lines DL1 to DLm of the liquid crystal panel 31.

The liquid crystal panel 31 includes liquid crystal cells arranged in a matrix and thin film transistors formed at intersections of n gate lines GL1 to GLn and m data lines DL1 to DLm, respectively. do.

In addition, the thin film transistor supplies a video signal from the data lines DL1 to DLm to the liquid crystal cell in response to the gate signal from the gate lines GL1 to GLn.

The liquid crystal cell may be equivalently represented by a liquid crystal capacitor Clc including a common electrode facing the liquid crystal and a pixel electrode connected to the thin film transistor.

Further, a storage capacitor (not shown) is further formed in the liquid crystal cell to maintain the voltage of the video signal charged in the liquid crystal capacitor Clc until the next video signal is supplied.

In addition, the storage capacitor is formed between the previous gate electrode and the pixel electrode. The gate driving integrated circuit 13 sequentially supplies gate signals to the gate lines GL1 to GLn to drive the thin film transistors connected to the corresponding gate lines.

The data driving integrated circuit 23 converts the video data into a video signal, which is an analog signal, and outputs a video signal corresponding to one horizontal line during one horizontal period in which the gate signal is supplied to the gate line GL. To feed.

In this case, the data driving integrated circuit 23 converts the video data into a video signal using the gamma voltages supplied from the gamma generator (not shown) and supplies it.

In such a liquid crystal display device, a frame inversion system, a line (column) inversion system, and a dot inversion system are used to drive the liquid crystal cells on the liquid crystal panel. The same inversion drive method is used.

Here, the liquid crystal panel driving method of the frame inversion method inverts the polarity of the video signal supplied to the liquid crystal cells on the liquid crystal panel every time the frame is changed.

Further, in the liquid crystal panel driving method of the line inversion method, the polarities of the video signals supplied to the liquid crystal panel are inverted for each gate line and every frame on the liquid crystal display panel.

Such a line inversion driving method has a problem in that a flicker such as a stripe pattern occurs between horizontal lines due to crosstalk between horizontal pixels.

On the other hand, the dot inversion type liquid crystal display panel driving method supplies each of the liquid crystal cells with a video signal having a polarity opposite to that of all adjacent liquid crystal cells in the horizontal and vertical directions, and inverts the polarity of the video signal every frame. do.

That is, in the dot inversion method, when a video signal of an odd numbered frame is displayed, the positive polarity (+) and the progression from the upper liquid crystal cell to the right liquid crystal cell and to the lower liquid crystal cells are displayed. The video signals are supplied to each of the liquid crystal cells so that the negative polarity (-) alternately appears, and when the video signal of the even frame is displayed, it proceeds from the upper left liquid crystal cells to the right liquid crystal cell and the lower side. As the liquid crystal cells proceed, video signals are supplied to each of the liquid crystal cells so that the negative polarity and the positive polarity alternate.

The dot inversion driving method provides an image with superior image quality compared to other inversion methods by allowing flickers generated between adjacent pixels in the vertical and horizontal directions to cancel each other out.

However, in the dot inversion driving method, the polarity of the video signal supplied to the data lines in the data driving integrated circuit must be reversed in the horizontal and vertical directions, so that the amount of variation in pixel voltage, that is, the frequency of the video signal, is higher than that of other inversion methods. Because of the large size, the power consumption is disadvantageous.

Meanwhile, the case in which the dot inversion driving method is applied will be described with reference to FIGS. 2 and 3.

FIG. 2 is a driving schematic diagram illustrating a driving method of a liquid crystal display device according to the related art, and FIG. 3 is a schematic diagram showing a pixel voltage polarity form when the driving method of the liquid crystal display device of FIG. 2 is used.

Referring to FIG. 2, the polarity control line 115 applies a polarity control signal POL to the data driving circuits 120 and 125, respectively. In driving the liquid crystal display panel 130 using the one dot inversion method, when the normal white full screen or the black screen is driven, the polarity of the positive charge and the negative polarity of the positive charge There is no problem because the charge charging amount of (-) is canceled at Vcom, but when a specific pattern is driven, the charge charging amount of positive (+) and negative charge (-) is canceled at a voltage larger or smaller than Vcom. Problem occurs. In particular, when one line character 140 is alternately outputted on the screen as shown in FIG. 3, the polarity of the positive polarity (+) is negative when the line polarity of the data driving integrated circuits 120 and 125 is viewed. Since the charging amount is greater than the negative charging amount or the positive charging amount is larger than the negative charging amount, the sum of the charging amounts is canceled at a voltage larger or smaller than Vcom. In this case, more current is required on the data driving integrated circuits 120 and 125, resulting in a drawback of the current to be applied to the other data driving integrated circuits. It affects the input gamma voltage, Vcc voltage, etc., and generates character crosstalk that generates unwanted one-line characters around the one-line characters to be output. The problem becomes even greater when one line character appears consecutively over two or more data driving integrated circuits.

In the case of Figure 4 shows a two-dot inversion method for solving the problem appearing in a specific pattern of the conventional one-dot inversion method. In the case of the two-dot inversion method, the horizontal two-dot inversion method operates in the horizontal direction as "++-++-++-" and in the vertical direction as "++-++-" There is a vertical two-dot inversion method, but in the case of the horizontal two-dot inversion, character crosstalk occurs like the one-dot inversion.

Like the hatched portion shown in Fig. 5, the plurality of vertical two lines 330 are displayed close to each other on the screen by setting two adjacent pixel columns at the black level and a pixel column adjacent to the white level. . Each pixel column includes red, green, and blue sub color columns, and each of the data driving integrated circuits 220 and 225 drives a plurality of pixel columns.

As shown in FIG. 5, when two characters are repeatedly displayed on the screen, the polarity of one positive line is greater than the negative polarity (-) or the positive polarity is positive. Since the charging amount is greater than the negative charging amount, the sum of the charging amounts is canceled at a voltage greater or less than the common voltage. For example, when the gamma voltage is in the region of 1V to 15V and the common voltage is 8V, the pixels on the first horizontal line driven by the data driving integrated circuit 220 may have the following actual voltages (1V, 15V, 15V). , 7V, 7V, 9V, 9V, 7V, 7V, 15V, 15V and 1V). As such, the actual average voltage is 9V, which is different from the common voltage of 8V. In addition, the pixels on the first horizontal line driven by the right data driving integrated circuit 225 have a voltage similar to the actual voltage and obtain an actual average voltage such as 9V.

If the common voltage is lower than the actual average voltage, the data driving integrated circuit needs more current and draws out a current to be applied to another data driving integrated circuit, which in turn causes the entire data driving. Character crosstalk is generated which produces unwanted two-line characters around the two-line characters to be output by affecting the gamma voltage or Vcc voltage input to the integrated circuit.

Accordingly, the present invention has been made to solve the above problems of the prior art, and provides a liquid crystal display panel driving integrated circuit and a driving method that can solve the crosstalk caused by the influence of the signal between pixels according to the signal. The purpose is.

According to an aspect of the present invention, there is provided a liquid crystal display driving integrated circuit including: at least one first driving integrated circuit configured to receive a first polarity control signal; And at least one second driving integrated circuit configured to receive a second polarity control signal, wherein each of the first and second driving integrated circuits has polarities of video signals according to different first and second polarity control signals. It is characterized by adjusting.

In addition, the driving method of the liquid crystal display panel according to the present invention for achieving the above object comprises the steps of: generating a first polarity control signal; Generating a second polarity control signal different from the first polarity control signal; Applying a first polarity control signal to at least one first driving integrated circuit; Applying a second polarity control signal to at least one second drive integrated circuit; Controlling first polarities of video signals according to the first polarity control signal; And controlling the second polarity of the video signals in accordance with the second polarity control signal.

Hereinafter, exemplary embodiments of a liquid crystal display driving integrated circuit and a driving method according to the present invention will be described in detail with reference to the accompanying drawings.

6 is a driving schematic diagram illustrating a driving method of a liquid crystal display device to which a 1-dot inversion driving method according to an exemplary embodiment of the present invention is applied.

FIG. 7 is a schematic diagram illustrating a pixel voltage polarity form of a boundary between data driving integrated circuits in the driving method of the liquid crystal display of FIG. 6.

Referring to FIG. 6, in the driving integrated circuit of the liquid crystal display according to the exemplary embodiment, an odd-numbered polarity control signal 242 is connected to a plurality of odd-numbered data driving integrated circuits 250 and is even. The second polarity control signal 241 is connected to the even-numbered data driving integrated circuit 260.

 Accordingly, the pixel portion of the odd-numbered data driver integrated circuit 250 and the pixel portion of the even-numbered data driver integrated circuit 260 may have different polarities.

 The polarity control signals are separately applied to the plurality of data driving integrated circuits 250 and 260.

Further, the driving integrated circuit of the liquid crystal display device is applicable to all TN, VA, IPS, and FFS modes.

On the other hand, the driving method of the liquid crystal display device according to an embodiment of the present invention, in the driving method of the liquid crystal display panel in which the pixels are arranged in a matrix form at the intersection of the gate line and the data line, one polarity control signal is determined. Generated by dividing into two polarity control signals 241 and 242 of polarity (+) and negative polarity (-), and dividing into odd-numbered data driver integrated circuit 250 and even-numbered data driver integrated circuit 260. Alternatively, the negative polarity control signal drives each of the plurality of odd-numbered data driver integrated circuits 250 and the plurality of even-numbered data driver integrated circuits 260 simultaneously.

First, one signal 242 of the positive or negative polarity control signal is applied to the plurality of odd-numbered data driving integrated circuits 250, and at the same time, polarity control opposite to the applied polarity control signal 242 is applied. The signal 241 is applied to the plurality of even-numbered data driving integrated circuits 260.

Next, the polarity of the input data is changed according to the corresponding polarity control signal applied through the odd-numbered data driver integrated circuit 250 and the even-numbered data driver integrated circuit 260 to perform 1 dot inversion driving to perform liquid crystal panel data. Apply the corresponding data voltage to the line.

Subsequently, in the next frame, the polarity control signals are alternately applied to each other so that the positive control signals are applied to the plurality of odd-numbered data driving integrated circuits 250, and the negative control signals are applied to the plurality of even-numbered data driving integrated circuits 260. Is applied. Therefore, the data of the polarity opposite to the polarity of the previously output frame is output.

FIG. 7 illustrates an even-numbered data driving integrated circuit 260 and an odd-numbered data driving integrated circuit 250 receiving different polarity control signals according to the present invention when one line character is displayed on the screen in the one dot inversion driving method. Data line at the boundary of

As shown in FIG. 7, in the case of a driving method using an odd-numbered polarity control signal and an even-numbered polarity control signal having different polarities, when one line character data is driven in a horizontal section driven by one data driving integrated circuit, 2 is used. Although the polarity control signal is not significantly improved, the width is small, so the influence of Gamma voltage is small, which is not a problem for the image, and character data is repeatedly generated in a wide horizontal section driven by two or more data driving integrated circuits. In this case, when two polarity control signals having different polarities, that is, negative polarity (-) and positive polarity (+) are used, than the same polarity control signal, the horizontal crosstalk is improved. That is, when the ratio of negative polarity (-) is higher than that of the positive polarity (+) in the one-line character of the odd-numbered data driving integrated circuit on the left side, it is negative in the one-line character of the right even-numbered data driving integrated circuit. Since the ratio of positive polarity (+) is higher than that of polarity (-), the positive polarity (+) and the negative polarity (-) are equalized to each other, resulting in an offsetting effect.

As described above, in the model using 1 dot inversion, when the character is repeatedly generated on the screen, the character crosstalk can be improved because the polarity driving method of the data driving integrated circuit is changed.

For example, when the gamma voltage is in the region of 1V to 15V and the common voltage is 8V, the pixels on the first horizontal line driven by the odd-numbered data driving integrated circuit 250 may have the following actual voltages (1V and 15V). , 1V, 9V, 7V, 9V, 1V, 15V, 1V, 9V, 7V and 9V). As such, the actual average voltage of the pixels driven by the odd-numbered data driver integrated circuit 250 is 7V. Furthermore, the pixels on the first horizontal line driven by the even-numbered data driving integrated circuit 260 may have the following actual voltages (15V, 1V, 15V, 7V, 9V, 7V, 15V, 1V, 15V, 7V, 9V, and 7V). Has As such, the actual average voltage of the pixels driven by the even-numbered data driver integrated circuit 260 is 9V, which is the same as the common voltage.

The current from the odd-numbered driving integrated circuit 250 is smaller than the current from the other data driving integrated circuit, while the current from the even-numbered driving integrated circuit 260 is larger than the current of the other data driving integrated circuit. There is no current change in other data driving integrated circuits, so that the voltage change is prevented when the liquid crystal display panel is operated.

In addition, the gamma voltage driven in the data driving integrated circuit uses more uniform constant voltage polarity (+) and negative voltage polarity (-). Thus, no larger current is required on either side. Also, the pixel driving voltage and the common voltage Vcom are not changed, and character crosstalk is prevented on the screen. When one line character is repeatedly generated on the screen display using the one dot inversion chart, the polarity driving method of the data driving integrated circuit is changed to reduce the occurrence of undesirable character crosstalk phenomenon.

As described above, according to the liquid crystal display panel driving integrated circuit and the driving method to which the 1-dot inversion method according to the embodiment of the present invention is applied, the same as for all data driving integrated circuits (Column D-IC) used in the related art. In the case of applying the polarity control signal, crosstalk has occurred due to the gamma voltage fluctuation caused by the difference in the voltage applied to the positive polarity or the negative polarity when driving the one-line character, but the present invention suppresses the occurrence of such crosstalk. This crosstalk phenomenon can be suppressed by forcing another polarity control signal to be alternately applied to the data driving integrated circuit.

Meanwhile, another embodiment of the liquid crystal display driving integrated circuit and the driving method according to the present invention will be described in detail with reference to FIGS. 8 and 9.

8 is a driving schematic diagram illustrating a driving integrated circuit and a method thereof of a liquid crystal display device by applying a horizontal two-dot inversion driving method according to another exemplary embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating a pixel voltage polarity form in the driving method of the liquid crystal display of FIG. 8.

Referring to FIG. 8, in the driving integrated circuit of the liquid crystal display according to another exemplary embodiment of the present invention, a driving method of a horizontal 2-dot inversion type is applied, and the odd-numbered polarity control signal 342 has a plurality of odd numbers. The first data driving integrated circuit 350 is connected, and the even-numbered polarity control signal 341 is connected to the even-numbered data driving integrated circuit 360.

Therefore, the pixel portion of the odd-numbered data driver integrated circuit 350 and the pixel portion of the even-numbered data driver integrated circuit 360 have different polarities.

The polarity control signals are individually applied to the plurality of data driving integrated circuits 350 and 360.

Further, the driving integrated circuit of the liquid crystal display device is applicable to all TN, VA, IPS, and FFS modes.

On the other hand, the driving method of the liquid crystal display device according to another embodiment of the present invention, in the driving method of the liquid crystal display panel in which the pixels are arranged in a matrix form at the intersection of the gate line and the data line, one polarity control signal is determined. It is generated by dividing into two polarity control signals of polarity (+) and negative polarity (-), and divided into odd-numbered data driver integrated circuit 350 and even-numbered data driver integrated circuit 360 to control the polarity of positive or negative polarity. Signals 341 and 342 simultaneously drive each of the plurality of odd-numbered data driver integrated circuits 350 and the plurality of even-numbered data driver integrated circuits 360.

First, one of the positive or negative polarity control signals 341 and 342 is applied to the plurality of odd-numbered data driving integrated circuits 350, and at the same time, the polarity opposite to the applied polarity control signal. The control signal is applied to the plurality of even-numbered data driving integrated circuits 360.

Then, the polarity of the input data is changed according to the corresponding polarity control signal applied through the odd-numbered data driver integrated circuit 350 and the even-numbered data driver integrated circuit 360 to perform 2 dot inversion driving to perform liquid crystal panel data. Apply the corresponding data voltage to the line.

Subsequently, in the next frame, the polarity control signals are alternately applied to each other so that the positive control signals are applied to the plurality of odd-numbered data driving integrated circuits 350, and the negative control signals are applied to the plurality of even-numbered data driving integrated circuits 360. Is applied. Therefore, the data of the polarity opposite to the polarity of the previously output frame is output.

FIG. 9 is a diagram illustrating a boundary between an even-numbered data driving integrated circuit and an odd-numbered data driving integrated circuit receiving different polarity control signals according to the present invention when two line characters are displayed on a screen in a horizontal two-dot inversion driving scheme. Represents a data line.

As in FIG. 9, when the same character occurs repeatedly across a wide display area, character crosstalk generation occurs when two separate polarity control signals having different polarities are compared with when using the polarity control signals having the same polarity. Is reduced more than when using. In particular, the ratio of the negative voltage is higher than the ratio of the positive voltage when the two-line character of the odd-numbered driving integrated circuit 350 is driven, and the ratio of the positive voltage is the even-numbered data driving integrated circuit 360 of the two-line character. Higher than negative voltage at operation. Therefore, the positive voltage level and the negative voltage level cancel each other and become uniform.

For example, when the gamma voltage is in the region of 1V to 15V and the common voltage is 8V, the pixels on the first horizontal line driven by the odd-numbered data driving integrated circuit 350 may have the following actual voltages (1V and 15V). , 15V, 7V, 7V, 9V, 9V, 7V, 7V, 15V, 15V and 1V). As such, the actual average voltage of the pixels driven by the odd-numbered data driver integrated circuit 350 is 9V. In addition, the pixels on the first horizontal line driven by the even-numbered data driving integrated circuit 360 may have the following actual voltages (15V, 1V, 1V, 9V, 9V, 7V, 7V, 9V, 9V, 1V, 1V, and 15V). Has As such, the actual average voltage of the pixels driven by the even-numbered data driver integrated circuit 360 is 7V. The actual average voltage of the pixels of the entire first horizontal line is 9V, which is the same as the common voltage.

The current from the odd-numbered driving integrated circuit 350 is greater than the current from the other data driving integrated circuit, while the current from the even-numbered driving integrated circuit 260 is smaller than the current of the other data driving integrated circuit. There is no current change in other data driving integrated circuits, so that the voltage change is prevented when the liquid crystal display panel is operated.

Furthermore, the gamma voltage driven in the data driving integrated circuit uses more uniform constant voltage polarity (+) and negative voltage polarity (-). Thus, no larger current is required on either side. Also, the pixel driving voltage and the common voltage Vcom are not changed, and character crosstalk is prevented on the screen. When two line characters are repeatedly generated on the screen display using a two dot inversion diagram, the polarity driving method of the data driving integrated circuit is changed to reduce the occurrence of undesirable character crosstalk phenomena.

That is, when character data is repeatedly generated in a wide horizontal section driven by two or more data driving integrated circuits (Column D-ICs), two polarity control signals having different polarities, that is, negative polarity, than when the same polarity control signal is used. The use of polarity (-) and positive polarity (+) results in an improvement in horizontal crosstalk. That is, when the ratio of negative polarity (-) is higher than the positive polarity (+) in the two line characters of the odd-numbered data driving integrated circuit on the left side, two of the right even-numbered data driving integrated circuit is formed. In the line character, the ratio of the positive polarity (+) is higher than that of the negative polarity (-), so that the positive polarity (+) and the negative polarity (-) are equal to each other, and thus an offsetting effect occurs.

Therefore, since the gamma voltage driven by the data driving integrated circuit is used more uniformly on the positive side and the negative side, the current does not require much current with either polarity as in the past. By minimizing the change in voltage, the character crosstalk does not occur on the screen.

Therefore, in the model using the horizontal two-dot inversion, the character crosstalk can be improved by changing the polarity driving method of the data driving integrated circuit when two-line characters are repeatedly generated on the screen. have.

Meanwhile, in the embodiment of the present invention, only one dot inversion and two dot inversion have been described. However, the present invention is not limited to this embodiment, and the present invention can be applied to both inversion methods having both positive and negative voltages in one horizontal line. .

As described above, according to the liquid crystal display panel driving integrated circuit and the driving method applying the horizontal two-dot inversion method according to another embodiment of the present invention, all the data driving integrated circuits (Column D-IC) used in the past In the case of applying the same polarity control signal, crosstalk has occurred due to the gamma voltage variation due to the difference in the voltage applied to the positive polarity or the negative polarity during character driving. However, in the present invention, crosstalk is suppressed. This crosstalk phenomenon can be suppressed by alternately applying different polarity control signals to the data driving integrated circuit.

In addition, the liquid crystal display panel is applicable to both twisted nematic (TN), vertical alignment (VA), in-plane switching (IPS), and fringe field switching (FFS) modes.

Furthermore, although not shown in the drawings, the liquid crystal display device driving circuit and driving method according to the present invention using control signals having different polarities may be used for other displays such as plasma display panel (PDP) devices and electroluminescent devices. It can be applied to the data line driving circuit applied to the device.

On the other hand, while described above with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

Claims (13)

At least one first driving integrated circuit configured to receive a first polarity control signal; And At least one second driving integrated circuit configured to receive a second polarity control signal, wherein each of the first and second driving integrated circuits is configured to adjust polarities of video signals according to the first and second polarity control signals. A driving circuit for a liquid crystal display device, characterized in that. The method of claim 1, And the first polarity control signal and the second polarity control signal have different polarities. The method of claim 1, Wherein the at least one first driving integrated circuit drives a first pixel portion, and the at least one second driving integrated circuit drives a second pixel portion having a different polarity than that of the first pixel portion. Driving circuit.      The method of claim 1,      The at least one first drive integrated circuit and the at least one second drive integrated circuit A liquid crystal display drive circuit, characterized in that arranged alternately with each other. The method of claim 1, And the first and second driving integrated circuits adjust the polarity of the video signal according to a constant inversion scheme. The method of claim 1, And the first polarity control signal is applied to a first driving integrated circuit, and the second polarity control signal is applied to a second driving integrated circuit. Generating a first polarity control signal; Generating a second polarity control signal different from the first polarity control signal; Applying a first polarity control signal to at least one first driving integrated circuit; Applying a second polarity control signal to at least one second drive integrated circuit; Controlling first polarities of video signals according to the first polarity control signal; And And controlling the second polarity of the video signals in accordance with the second polarity control signal. The method of claim 7, wherein And the first polarity control signal and the second polarity control signal have different polarities. 8. The liquid crystal display of claim 7, further comprising driving the first pixel portion and the second pixel portion by the first driving integrated circuit and the second driving integrated circuit having different polarities, respectively. Way. The method of claim 9, The at least one first drive integrated circuit and the at least one second drive integrated circuit A method of driving a liquid crystal display, characterized in that arranged alternately with each other. The method of claim 9, And adjusting the polarity of the video signal according to a predetermined inversion scheme. The method of claim 9, And the first polarity control signal is applied to a first driving integrated circuit, and the second polarity control signal is applied to a second driving integrated circuit. The method of claim 9, The generating of the first and second polarity control signals may further include dividing the polarity control signal into a positive polarity and a negative polarity.

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