TWI413089B - Method for driving liquid crystal display - Google Patents

Description

Liquid crystal display driving method

The present invention relates to a driving method of a display, and more particularly to a driving method of a liquid crystal display (LCD).

With the advancement of technology, flat panel displays such as liquid crystal displays and plasma display panels (PDPs) have gradually replaced cathode ray tube displays (CRTs), and have become common displays on the market. Among them, liquid crystal displays are the mainstream products of today's displays.

At present, the most common liquid crystal displays are Thin Film Transistor Liquid Crystal Display (TFT-LCD), which has a plurality of scan lines (also referred to as gate lines) and a plurality of data lines ( The data line, which may also be referred to as a source line, and a plurality of pixel units, each of the pixel units includes a transistor and a pixel electrode.

Nowadays, the driving method of the thin film transistor liquid crystal display is to use these scanning lines to turn on the thin film transistors, and to write a plurality of pixel pixel signals through the data lines in a frame period to these The pixel electrode charges the liquid crystal capacitor corresponding to the pixel electrode. Each time the thin film transistor is turned on, these scan lines typically turn on the thin film transistor one by one. That is to say, usually there are not many scanning lines simultaneously outputting a voltage to the thin film transistor to turn on the thin film transistor.

In the recent liquid crystal display industry, large-sized panels and high-resolution images have become the main development trend at present. Many companies and companies mostly believe that such a trend will force the scan line to open the thin film transistor for a shorter time. For this reason, most of the researches on liquid crystal displays by these companies and enterprises are currently developing toward technologies that increase the reaction rate of liquid crystal molecules or increase the voltage input to the liquid crystal capacitors.

The invention provides a driving method of a liquid crystal display, which can satisfy the development trend of the above-mentioned large-sized panel and high-resolution screen.

The invention provides a driving method of a liquid crystal display. First, in a picture period, a first voltage is input to the plurality of first scan lines, so that a pixel voltage signal is written to a plurality of pixel units of an Xth column, where X is a positive integer and the Xth The pixel units of the column are connected to one of the first scan lines. Thereafter, during the input of the first voltage, a second voltage is input to the plurality of second scan lines to precharge the pixel voltage signal to a plurality of pixel units of the Yth column, wherein Y is a positive integer, and Y These pixel units of the column are connected to one of these second scan lines. These pixel units of the Xth column and the pixel units of the Yth column are not adjacent to each other.

In an embodiment of the invention, X and Y satisfy the mathematical formula: |X-Y|=3Z, where Z is a positive integer.

In an embodiment of the invention, Z is equal to one.

In an embodiment of the invention, Z is equal to 100 or 201.

In an embodiment of the invention, the first scan lines are adjacent to each other and the second scan lines are adjacent to each other. These first scan lines are located beside these second scan lines.

In an embodiment of the invention, each of the first scan lines is adjacent to one of the second scan lines.

In an embodiment of the invention, the first voltage and the second voltage are output by at least one driving chip.

In an embodiment of the invention, the first voltage and the second voltage are input to the first scan lines and the second scan lines via a circuit board.

In an embodiment of the invention, the first voltage and the second voltage are output by a plurality of driving chips.

In an embodiment of the invention, the driving wafers are electrically connected to the two ends of the first scanning lines and the two ends of the second scanning lines.

In an embodiment of the invention, the pixel voltage signal includes a plurality of color data.

In an embodiment of the invention, the color data is a red field data, a green field data, and a blue field data.

In an embodiment of the invention, the red field data, the green field data, and the blue field data are input to the pixel units at different times.

In an embodiment of the invention, the time of the picture period is less than or equal to 16.67 milliseconds.

Based on the above, since the first voltage is simultaneously input to the plurality of scanning lines, and the second voltage is simultaneously input to the other plurality of scanning lines, the plurality of columns of pixel units can be simultaneously turned on when the liquid crystal display is driven. Secondly, the time when the first voltage and the second voltage are input partially overlap to achieve the effects of precharging and increasing the charging time, so that the charging saturation rate of the thin film transistor is greatly improved. Therefore, compared with the prior art, the present invention can increase the time for all pixel units to be turned on and charged, thereby satisfying the development trend of the current large-size panel toward a high picture update rate and a high-resolution picture.

The above described features and advantages of the present invention will be more apparent from the following description.

1A is a circuit diagram of a liquid crystal display to which a driving method of a liquid crystal display according to an embodiment of the present invention is applied. Referring to FIG. 1A , the driving method of the embodiment can be applied to a liquid crystal display 100 , which can have a color filter substrate and a backlight module that provides a white surface light source; or the liquid crystal display 100 can It is a color sequential liquid crystal display.

The liquid crystal display 100 includes a plurality of scanning lines, a plurality of data lines 112d, 114d, 116d, a plurality of pixel units 120, and a driving wafer 130. The scan lines include the first scan lines S11, S12, and S13 and the second scan lines S24, S25, and S26. The structures and materials of the first scan lines S11 to S13 and the second scan lines S24 to S26 are the same, and the data lines are the same. The structures and materials of 112d, 114d, and 116d are also the same. In other words, the first scan lines S11 S S13 and the second scan lines S24 S S26 are all the same scan lines, and the data lines 112d, 114d, and 116d are also the same data lines.

However, in order to clearly and in detail describe the technical features of the present invention, some of the scan lines are named as the first scan lines S11 to S13 and the second scan lines S24 to S26, respectively. The first scan lines S11, S12, and S13 are adjacent to each other, and the second scan lines S24, S25, and S26 are adjacent to each other, wherein the first scan lines S11, S12, and S13 are located at the second scan lines S24, S25, Next to S26, as shown in Figure 1A.

The driving chip 130 is connected to all the scanning lines, that is, the driving chip 130 is connected to the first scanning lines S11, S12, S13 and the second scanning lines S24, S25, S26, and the pixel units 120 are electrically connected to the scanning lines (including the first scanning). Lines S11, S12, S13 and second scan lines S24, S25, S26) and these data lines 112d, 114d, 116d.

Each of the pixel units 120 has a transistor 122, a liquid crystal capacitor 124, and a storage capacitor (Cst) 126. The storage capacitor 126 can be a storage capacitor (Cst on gate) or a common line on the scan line. Storage capacitor (Cst on common) on the (common line).

Each of the transistors 122 has a gate G1, a drain D1 and a source S1, wherein the gate G1 is connected to a scan line, such as a first scan line S11, S12 or S13, or a second scan line S24, S25 or S26. The drain D1 connects the liquid crystal capacitor 124 and the storage capacitor 126, and the source S1 is connected to the data lines 112d, 114d, and 116d.

Therefore, the first scan lines S11, S12, S13 and the second scan lines S24, S25, S26 can turn these transistors 122 on or off to control the writing of the pixel voltage signals to the pixel unit 120. Further, in any of the pixel units 120 of the column, each source S1 is connected to only one of the data lines 112d, 114d, and 116d. That is to say, the number of data lines connected to each source S1 is only one.

FIG. 1B is a timing diagram of voltages of scan lines of the liquid crystal display of FIG. 1A. FIG. Referring to FIG. 1A and FIG. 1B, in the driving method of the liquid crystal display of the embodiment, first, a first voltage Vg1 is input to the first scan lines S11, S12, and S13 in a frame period P1. The pixel voltage signal is written to the plurality of pixel units 120 of the Xth column, where X is a positive integer and represents one of the column pixel units 120. The time of the picture period P1 is less than or equal to 16.67 milliseconds, that is, the picture period P1 is not more than 1/60 second, and the first voltage Vg1 can be output by the driving chip 130.

The pixel unit 120 of the Xth column is connected to one of the first scan lines S11, S12, and S13. Taking FIG. 1A as an example, the plurality of pixel units 120 of the first column (the region R1 shown in FIG. 1A) are connected to the first scan line S11, and the plurality of pixel units 120 of the second column are connected to the first Scan line S12. By analogy, the plurality of pixel units 120 of the third column are connected to the first scanning line S15.

When the first voltage Vg1 is input to the first scan lines S11, S12, and S13, the transistors 122 of the first to third columns of the pixel units 120 are turned on, and the pixel voltage signals pass through the data lines 112d, 114d, and 116d. Writing to the pixel unit 120 causes the liquid crystal capacitor 124 and the storage capacitor 126 to be charged, causing the liquid crystal display 100 to display an image.

Next, during the input of the first voltage Vg1, a second voltage Vg2 is input to the plurality of second scan lines S24, S25, S26 to precharge the pixel voltage signal to the plurality of pixel units 120 of the Yth column, wherein Y It is a positive integer and represents another column of pixel units 120.

As seen from FIG. 1B, the second voltage Vg2 is input after the first voltage Vg1 starts to be input, and continues to be input after the first voltage Vg1 stops inputting. In other words, both the first voltage Vg1 and the second voltage Vg2 do not start input at the same time, and the time of input of the two partially overlaps. In addition, the second voltage Vg2 can also be output by the driving chip 130, so both the first voltage Vg1 and the second voltage Vg2 can be output by the same driving wafer 130.

These pixel units 120 of the Yth column are connected to one of these second scanning lines S24, S25, S26. Taking FIG. 1A as an example, the plurality of pixel units 120 of the fourth column are connected to the second scan line S24, wherein the pixel units 120 of the fourth column are located in the region R4 shown in FIG. 1A. Similarly, the plurality of pixel units 120 of the fifth column are connected to the second scan line S25, and the plurality of pixel units 120 of the sixth column are connected to the second scan line S26.

In the above, the pixel units 120 of the Xth column and the pixel units 120 of the Yth column are not adjacent to each other. That is to say, the pixel units 120 that are written into the pixel voltage signal due to the input of the first voltage Vg1 are not arranged adjacent to the pixel units 120 precharged by the pixel voltage signal. Column.

In detail, taking FIG. 1A as an example, these data lines 112d are connected to the source S1 and the fourth column of pixel units 120 in the first column of pixel units 120 (in the region R1 shown in FIG. 1A). The source S1 in the region R4 shown in FIG. 1A). When the first voltage Vg1 is input to the first scan lines S11, S12, and S13, the pixel voltage signal is written from the data line 112d to the first column of pixel units 120. Thereafter, during the input of the first voltage Vg1, a second voltage Vg2 is input to the second scan lines S24, S25, and S26, and the pixel voltage signal is precharged to the fourth column pixel unit 120.

In other words, when the pixel voltage signal is written to the first column of pixel units 120, the fourth column of pixel units 120 is precharged. Similarly, the data line 114d connects the source S1 in the second column of pixel units 120 and the source S1 in the fifth column of pixel units 120, and the data line 116d connects the source S1 in the third column of pixel units 120. And the source S1 in the sixth column of pixel units 120. Therefore, when the pixel voltage signal is written to the second column of pixel units 120, the fifth column of pixel units 120 is precharged. When the pixel voltage signal is written to the third column of pixel units 120, the sixth column of pixel units 120 is precharged.

It can be seen that with respect to the Xth column pixel unit 120 that is written into the pixel voltage signal and the Yth column pixel unit 120 that is precharged, the two columns are not only adjacent, but X and Y also satisfy the mathematical formula: |XY|=3Z, where Z is a positive integer. In the embodiment of FIG. 1A, Z is equal to 1, ie, |XY|=3, for example, when the pixel voltage signal is written to the second column (ie, the Xth column) of the pixel unit 120, the fifth column (ie, Y column) The pixel unit 120 is precharged.

According to the above driving method using the input first voltage Vg1 and the second voltage Vg2, and so on, in the picture period P1, the scanning of the first voltage Vg1 and the second voltage Vg2 to the second scanning line S26 is repeated and regularly input. The line writes the pixel voltage signal to the pixel unit 120 electrically connected to the subsequent scan line, and precharges. In this way, the liquid crystal display 100 can display images and shorten the overall charging time of the liquid crystal capacitor 124, which contributes to an increase in the frame rate and the field rate.

In addition, when the liquid crystal display 100 is a color sequential liquid crystal display, the pixel voltage signal includes a plurality of color data. The color data are red field data, green field data and blue field data. In the picture period P1, the red field data, the green field data and the blue field data are input to these pictures at different times. The element unit 120 is input to the pixel unit 120 via the data lines 112d, 114d, and 116d, for example, the red field data, the green field data, and the blue field data may be sequentially input.

2 is a circuit diagram of another liquid crystal display to which the driving method of the liquid crystal display according to an embodiment of the present invention is applied. Referring to FIG. 2 , the liquid crystal display 200 applied in this embodiment is similar in circuit structure to the liquid crystal display 100 described above, and includes components of the liquid crystal display 100 , but the difference is that the liquid crystal display 200 includes not only a plurality of driving chips 130 . And also includes a plurality of circuit boards 240.

The circuit board 240 is directly electrically connected to all the scan lines (including the first scan lines S11, S12, S13 and the second scan lines S24, S25, S26), and may be a flexible circuit board or a chip package carrier board ( The package carrier is electrically connected to the first scan lines S11, S12, and S13 and the second scan lines S24, S25, and S26 via the wiring board 240. The first voltage Vg1 and the second voltage Vg2 are output from the driving chips 130, and are input to the first scanning lines S11, S12, and S13 and the second scanning lines S24, S25, and S26 via the wiring board 240.

However, in other embodiments not shown, the driving chips 130 may be directly electrically connected to the first scanning lines S11, S12, S13 and the second scanning lines S24, S25, S26. In other words, the liquid crystal display 200 does not necessarily require these circuit boards 240, that is, the circuit board 240 is a selective component of the present invention, rather than an essential component. Thus, the circuit boards 240 shown in FIG. 2 are for illustrative purposes only and are not limiting of the invention.

The driving wafers 130 are electrically connected to the two ends of the first scanning lines S11, S12, and S13 and the two ends of the second scanning lines S24, S25, and S26, respectively. In detail, each of the first scan lines S11, S12, and S13 has a first end E11 and a second end E12 opposite to the first end E11, and each of the second scan lines S24, S25, and S26 has a first The end E21 is opposite to the second end E22 of the first end E21. The first ends E11 and E21 are electrically connected to one of the driving chips 130, and the second ends E12 and E22 are electrically connected to the other driving chip 130.

Referring to FIG. 1B and FIG. 2, when one of the driving wafers 130 outputs the first voltage Vg1, the other driving wafer 130 stops outputting the first voltage Vg1. When one of the driving wafers 130 outputs the second voltage Vg2, the other driving wafer 130 stops outputting the second voltage Vg2. Therefore, when the first voltage Vg1 is input from the first terminal E11 (or the second terminal E12), the second voltage is input from the second terminal E22 (or the first terminal E21), that is, the driving wafer 130 alternately outputs the first voltage Vg1 and The second voltage Vg2 is instead of simultaneously outputting the first voltage Vg1 or the second voltage Vg2.

However, in other embodiments, each of the driving chips 130 may simultaneously output the first voltage Vg1 or the second voltage Vg2. That is, the first voltage Vg1 is input from the first end E11 and the second end E12, respectively, and the second voltage Vg2 is input from the first end E21 and the second end E22, respectively. This can reduce the occurrence of color distortion caused by the RC delay, and cause the liquid crystal capacitor 124 to be fully charged to avoid serious damage to the picture quality.

3 is a circuit diagram showing another liquid crystal display to which a driving method of a liquid crystal display according to an embodiment of the present invention is applied. Referring to FIG. 3, the liquid crystal display 300 of the present embodiment is similar in circuit structure to the liquid crystal display 200 of the foregoing embodiment. For example, the liquid crystal display 300 includes a plurality of scan lines, a plurality of data lines 112d, 114d, 116d, and a plurality of pixels. The unit 120, the plurality of circuit boards 240, and the plurality of drive wafers 330a, 330b.

In the above, the scan lines include a plurality of first scan lines A001, A302, A603 and a plurality of second scan lines B002, B303, B604, wherein the first scan lines A001, A302, A603 and the second scan lines B002, B303, The structure and material of both B604 are the same as those of the foregoing embodiment. However, the first scan lines A001, A302, A603 are not adjacent to each other, and the second scan lines B002, B303, B604 are not adjacent to each other.

In detail, each of the first scan lines A001, A302 or A603 is adjacent to one of the second scan lines B002, B303 or B604, for example, the first scan line A001 is adjacent to the second scan line B002, and the first scan line A302 Adjacent to the second scan line B303, the first scan line A603 is adjacent to the second scan line B604, as shown in FIG.

The circuit boards 240 are directly electrically connected to all the scan lines (including the first scan lines A001, A302, A603 and the second scan lines B002, B303, B604), and the drive chips 330a, 330b are electrically connected to the first through the circuit board 240. The scan lines A001, A302, A603 and the second scan lines B002, B303, B604, wherein the first voltage Vg1 and the second voltage Vg2 are output by the driving chips 330a, 330b.

Similar to the liquid crystal display 200 shown in FIG. 2, the two ends of the scanning lines, for example, the first scanning lines A001, A302, A603 and the second scanning lines B002, B303, B604 are electrically connected to the driving chip 330a. And 330b, and the driving chips 330a, 330b are electrically connected to the two ends of the first scanning lines A001, A302, A603 and the second scanning lines B002, B303, B604, respectively, as shown in FIG.

Referring to FIG. 1B and FIG. 3, the first voltage Vg1 or the second voltage Vg2 may be simultaneously output by the driving chips 330a, 330b, wherein the first voltage Vg1 may be input from the two ends of the first scanning lines A001, A302, and A603. The second voltage Vg2 can be input from the two ends of the second scan lines B002, B303, and B604 to improve the shortage of the liquid crystal capacitor 124 due to the RC delay.

In addition to this, the first voltage Vg1 and the second voltage Vg2 may also be alternately outputted by the drive wafers 330a, 330b. For example, when the driving wafer 330a (or 330b) outputs the first voltage Vg1, the driving wafer 330b (or 330a) stops outputting the first voltage Vg1; when the driving wafer 330b (or 330a) outputs the second voltage Vg2, the driving wafer 330a (or 330b) stops outputting the second voltage Vg2.

It should be noted that, in other embodiments not shown, the driving chips 330a, 330b may be directly electrically connected to the first scanning lines A001, A302, A603 and the second scanning lines B002, B303, B604, that is, liquid crystal. These boards 240 are not necessarily required for display 300. Accordingly, the circuit boards 240 shown in FIG. 3 are for illustrative purposes only and are not limiting of the invention.

The driving method of the liquid crystal display device 300 of the present embodiment is similar to the previous embodiment. In the driving method of the embodiment, first, the first voltage Vg1 is input to the first scanning lines A001, A302, and A603 to make the pixel voltage. The signal is written to the plurality of pixel units 120 of the Xth column, where X is a positive integer and represents one of the column pixel units 120, and the pixel unit 120 of the Xth column is connected to the first scan lines A001 and A302. One of the A603.

Taking FIG. 3 as an example, the number of scan lines (including the first scan lines A001, A302, A603 and the second scan lines B002, B303, and B604) included in the liquid crystal display 300 is 900, and the plurality of pictures in the first column are included. The prime unit 120 (the region R1' shown in FIG. 3) is connected to the first scan line A001, and the plurality of pixel units 120 (the region R302' shown in FIG. 3) of the 302th column are connected to the first scan. Line A302, and a plurality of pixel units 120 of the 603th column (region R603' as shown in FIG. 3) are connected to the first scan line A603.

When the first voltage Vg1 is input to the first scan lines A001, A302, and A603, the transistors 122 of the pixel units 120 of the first, 302, and 603th columns are turned on, and the pixel voltage signals pass through the data lines 112d and 114d. Writing to the pixel unit 120 in conjunction with 116d causes the liquid crystal capacitor 124 to be charged, causing the liquid crystal display 300 to display an image.

Then, during the input of the first voltage Vg1, the second voltage Vg2 is input to the plurality of second scan lines B002, B303, and B604, so that the pixel voltage signals are precharged through the data lines 112d, 114d, and 116d to pre-charge the Yth column. The pixel unit 120, where Y is a positive integer, and also represents one of the column pixel units 120.

The pixel units 120 of the Yth column are connected to one of the second scan lines B002, B303, B604. Taking FIG. 3 as an example, the plurality of pixel units 120 of the second column (the region R2' shown in FIG. 3) are connected to the second scanning line B002. Similarly, the plurality of pixel units 120 of the 303th column are connected to the second scan line B303, and the plurality of pixel units 120 of the 604th column are connected to the second scan line B604, as shown in FIG.

In the above, the pixel units 120 of the Xth column and the pixel units 120 of the Yth column are not adjacent to each other. That is to say, the pixel units 120 that are written into the pixel voltage signal due to the input of the first voltage Vg1 are not arranged adjacent to the pixel units 120 precharged by the pixel voltage signal. Column.

Taking FIG. 3 as an example, these data lines 112d are connected to the source S1 in the first column of pixel units 120 and the source S1 in the 603th column of pixel units 120. When the first voltage Vg1 is input to the first scan lines A001, A302, and A603, the pixel voltage signal is written from the data line 112d to the first column of pixel units 120. Next, during the input of the first voltage Vg1, the second voltage Vg2 is input to the second scan lines B002, B303, and B604, and the pixel voltage signal is precharged to the 604th pixel unit 120. Therefore, when the pixel voltage signal is written to the first column of pixel units 120, the 604th pixel unit 120 is precharged.

Similarly, the data line 114d connects the source S1 in the second column of pixel units 120 and the source S1 in the 302th column of pixel units 120, and the data line 116d connects the source S1 in the 303th column of pixel units 120. And the source S1 in the 603th column pixel unit 120, therefore, when the pixel voltage signal is written to the 302th column pixel unit 120, the second column pixel unit 120 is precharged. When the pixel voltage signal is written to the 603th column pixel unit 120, the 303th pixel unit 120 is precharged.

It can be seen that the Xth column pixel unit 120 and the Yth column pixel unit 120 are not only not adjacent to each other, but X and Y also satisfy the mathematical formula: |XY|=3Z, where Z is a positive integer, and in FIG. In the embodiment, Z is equal to 100 or 201, that is, |XY|=300 or 603, for example, when the pixel voltage signal is written to the 302th column (ie, the Xth column) pixel unit 120, the second column (ie, Column Y) The pixel unit 120 is precharged and Z is equal to 100. When the pixel voltage signal is written to the first column (ie, the Xth column) pixel unit 120, the 603th column (ie, the Yth column) of the pixel unit 120 is precharged, and Z is equal to 201.

Based on the above, using the driving method of inputting the first voltage Vg1 and the second voltage Vg2, and so on, repeating and regularly inputting the first voltage Vg1 and the second voltage Vg2 to the first scanning lines A001, A302 in the picture period P1 The A603 and the scan lines other than the second scan lines B002, B303, and B604 are written with a pixel voltage signal by the pixel unit 120 electrically connected to the other scan lines, and are precharged. Thus, the liquid crystal display 100 can display an image and can shorten the overall charging time of the liquid crystal capacitor 124.

In summary, since the first voltage and the second voltage are simultaneously input to the plurality of scanning lines, the transistors of the plurality of columns of pixel units can be simultaneously turned on when the liquid crystal display is driven. Secondly, the time when the first voltage and the second voltage are input partially overlap, so when the first voltage is input to some scan lines, the other plurality of scan lines start to be precharged.

It can be seen that compared with the prior art, the invention can shorten the time of turning on the transistors of all the pixel units in the picture period, and shorten the charging time of the liquid crystal capacitor, thereby greatly increasing the picture update rate and the field. Update rate to meet the current trend of large-size panels and high-resolution screens.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the equivalents of the modifications and retouchings are still in the present invention without departing from the spirit and scope of the invention. Within the scope of patent protection.

100, 200, 300. . . LCD Monitor

112d, 114d, 116d. . . Data line

120. . . Pixel unit

122. . . Transistor

124. . . Liquid crystal capacitor

126. . . Storage capacitor

130, 330a, 330b. . . Driver chip

240. . . circuit board

A001, A302, A603, S11, S12, S13. . . First scan line

B002, B303, B604, S24, S25, S26. . . Second scan line

D1. . . Bungee

E11, E21. . . First end

E12, E22. . . Second end

G1. . . Gate

P1. . . Picture period

R1, R1', R2', R4, R302', R603'. . . region

S1. . . Source

Vg1. . . First voltage

Vg2. . . Second voltage

1A is a circuit diagram of a liquid crystal display to which a driving method of a liquid crystal display according to an embodiment of the present invention is applied.

FIG. 1B is a timing diagram of voltages of scan lines of the liquid crystal display of FIG. 1A. FIG.

2 is a circuit diagram of another liquid crystal display to which the driving method of the liquid crystal display according to an embodiment of the present invention is applied.

3 is a circuit diagram of another liquid crystal display to which the driving method of the liquid crystal display according to an embodiment of the present invention is applied.

P1. . . Picture period

Vg1. . . First voltage

Vg2. . . Second voltage

Claims (14)

A driving method of a liquid crystal display, comprising: inputting a first voltage to a plurality of first scan lines in a picture period, so that a pixel voltage signal is written to a plurality of pixel units of an Xth column, wherein X a positive integer, and the pixel units of the Xth column are connected to one of the first scan lines; and during the input of the first voltage, inputting a second voltage to the plurality of second scan lines, so that The pixel voltage signal precharges a plurality of pixel units of the Yth column, wherein Y is a positive integer, and the pixel units of the Yth column are connected to one of the second scan lines, the Xth column The pixel units and the pixel units of the Yth column are not adjacent to each other, and the time of inputting the first voltage and the second voltage partially overlaps. The driving method of the liquid crystal display according to claim 1, wherein X and Y satisfy the following mathematical formula: |X-Y|=3Z; wherein Z is a positive integer. The driving method of the liquid crystal display according to claim 2, wherein Z is equal to 1. The driving method of the liquid crystal display according to claim 2, wherein Z is equal to 100 or 201. The method for driving a liquid crystal display according to claim 1, wherein the first scan lines are adjacent to each other, and the second scans are The lines are adjacent to each other, and the first scan lines are located beside the second scan lines. The method of driving a liquid crystal display according to claim 1, wherein each of the first scan lines is adjacent to one of the second scan lines. The method of driving a liquid crystal display according to claim 1, wherein the first voltage and the second voltage are output by at least one driving chip. The method for driving a liquid crystal display according to claim 7, wherein the first voltage and the second voltage are input to the first scan lines and the second scan lines via a circuit board. The method of driving a liquid crystal display according to claim 7, wherein the first voltage and the second voltage are output by a plurality of the driving chips. The driving method of the liquid crystal display device of claim 9, wherein the driving chips are electrically connected to the two ends of the first scanning lines and the two ends of the second scanning lines. The method of driving a liquid crystal display according to claim 1, wherein the pixel voltage signal comprises a plurality of color data. The method for driving a liquid crystal display according to claim 11, wherein the color data is a red field data, a green field data, and a blue field data. The method of driving a liquid crystal display according to claim 12, wherein the red field data, the green field data, and the blue field data are input to the pixel units at different times. The driving method of the liquid crystal display according to claim 1, wherein the time of the picture period is less than or equal to 16.67 milliseconds.