CN100390614C - Driving method of pixel array - Google Patents

Abstract

The invention relates to a driving method of a pixel array, which is suitable for the pixel array, wherein the pixel array comprises a plurality of pixel groups on the same row, and at least one pixel group comprises a plurality of pixels. The driving method is to use the electric potential with the same phase as the electric potential of the pixel electrode of each pixel in the same pixel group, and use the electric potential with the reverse phase as the electric potential of the pixel electrode of each pixel in the two adjacent pixel groups. Furthermore, two adjacent pixels at the junction of two adjacent pixel groups are driven by the same gate line, and a first pixel in the same pixel group and a pixel with pixel electrode potentials of different phases in the row adjacent to the first pixel are driven by the same gate line. The invention can provide a driving mode of the pixel array of the gray scale picture with high aperture ratio, uniform and stable brightness, thereby being more suitable for practical use.

Description

Driving method of pixel array

technical field

The present invention relates to a driving device suitable for liquid crystal displays, in particular to a driving method for a pixel array having a high aperture ratio (Aperture Ratio) and a pixel array driving technology capable of providing a stable gray-scale picture (Grey-scale Picture). .

Background technique

Generally speaking, liquid crystal displays are distinguished according to driving methods, which can be divided into passive driving and active driving liquid crystal displays. The liquid crystal display used in common mobile phones is a passive driving liquid crystal display. Due to the serious capacitive coupling (Capacitor Coupling) phenomenon of this type of liquid crystal display, the image quality is low, such as afterimage, poor contrast and slow response rate. and other phenomena, and it is usually driven by multitasking, which is much more complicated than that of active-driven LCDs. Therefore, if this type of LCD is to achieve high-resolution, high-quality, full-color It is very difficult to target, but because of its relatively low manufacturing cost, it is often used in some relatively low-end display markets.

The thin-film transistor liquid crystal display used in general notebook computers or monitors is an active-driven liquid crystal display. This type of liquid crystal display improves the shortcomings of the above-mentioned passive-driven liquid crystal display, making the image quality and resolution of the liquid crystal display It can be further improved, and its main key is that it uses thin film transistors as switching devices for controlling the rotation of liquid crystal molecules.

Please refer to FIG. 1 , which is a schematic diagram of a thin film transistor driving circuit. It includes: data (ie data, hereinafter referred to as data) line 103 , gate line 105 , thin film transistor 107 , liquid crystal capacitor 109 and storage capacitor 111 . Here, firstly, a brief description will be made on how the potential is applied to the liquid crystal molecules of each pixel (Pixel) in the liquid crystal display. In an actively driven liquid crystal display, each pixel has a thin film transistor 107, the gate of which is connected to the gate line in the horizontal direction, which can also be called the gate line 105, and the source is connected to the data line in the vertical direction, which can also be It is called the data line 103, and the drain is connected to the pixel electrode (Pixel Electrode). It should be emphasized here that the source and the drain can be connected to the two potentials of the data line and the pixel electrode respectively. During the operation In , it is not set to operate at a constant potential, but has been operating within the allowable potential range of liquid crystal molecules.

The operation mode of this liquid crystal display, at first, start a gate line 105 once at the same time, in order to open all thin-film transistors on this gate line 105, comprise thin-film transistor 107, send into corresponding by data line 103 The data signal is used to charge the pixel electrode to an appropriate potential. Then turn off the thin film transistor 107 until the signal is rewritten next time, during which the charges are stored on the liquid crystal capacitor 109; at this time, start the next gate line and send in its corresponding data signal. After writing the data of the entire screen in this order, write the signal from the first gate line again. Because of such a simple driving method, the mutual influence of each pixel is greatly reduced, and the imaging quality of the liquid crystal display is closely related to the electrical characteristics of the thin film transistor, such as the off current in the thin film transistor, Drive current, parasitic capacitance (ParasiticCapacitance) and switching rate, etc.

In addition, the storage capacitor 111 is used to assist the storage of charges, hence the name. However, the storage capacitor also has another important function, which is to reduce the potential coupling effect. The potential expressed here refers to the potential applied to the liquid crystal molecules, which is the pixel electrode shared between pixels and the pixel electrode. Potential difference. When the thin film transistor is turned off, the pixel electrode is not connected to any potential source, but is in a floating state. At this time, if there is any potential change around the pixel electrode, this potential change will pass through the parasitic capacitance. And coupled to the pixel electrode, resulting in a change in potential, thereby affecting the potential applied to the liquid crystal molecules. Although increasing the storage capacitor can reduce the potential coupling effect, generally speaking, since at least one of the two pixel electrodes of the storage capacitor is made of opaque metal, increasing the storage capacitor means increasing the value of the storage capacitor. area, which means that the light-transmitting openings in the pixels will be reduced, and the overall luminous efficiency of the liquid crystal display will be reduced. Therefore, if a high aperture ratio is to be achieved, the source/drain region is usually formed with full self-alignment (Full Self Alignment) to reduce the size of the parasitic capacitance and the storage capacitance.

Please refer to FIG. 2 , which is a schematic diagram of a driving device for a conventional 3N*1 driving mode TFT array. It includes, from left to right, pixel G222 for displaying green, pixel B225 for displaying blue, pixel R227 for displaying red, and coupling capacitors 201-219 in each pixel. 3N*1 driving mode The characteristic is that the potential polarity distribution of the pixel electrodes on the same horizontal gate line is +++---+++---+++---......, that is to say, it is based on three pixels is one unit, and every other unit, the potential polarity of the pixel electrode is changed once. Although the occurrence probability of the transverse electric field can be reduced, the problem of uneven brightness of the screen will occur. The reasons are as follows:

1. Taking the pixel G222 as an example, since two adjacent data lines have the same polarity, there is no transverse electric field between the two data lines, and the aperture ratio is very high, but the coupling capacitance (Coupling Capacitance) 205 and 207 will be equal to the phase The added effect makes the interaction effect (Cross Talk) bigger. The situation of the pixel R227 can also be analogized.

2. For pixel B225, since two adjacent data lines have different polarities, for pixel B between these two data lines, the coupling capacitors 209 and 211 will have a subtractive effect, so that Interaction effects are reduced.

In this way, the brightness displayed by the pixel B225 among the three pixels on the same screen will be uneven, and the brightness displayed by the pixels G, R222, and 227 will be uneven, so that the images displayed on the panel will appear incongruous. Although the 3N*1 driving method can increase the aperture ratio, it will cause the disadvantage of uncoordinated images.

It can be seen that the above existing driving method of the pixel array still has defects, and further improvement is urgently needed. In order to solve the defects of the existing pixel array driving method, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and this is obviously a problem that relevant manufacturers are eager to solve.

In view of the defects in the above-mentioned existing pixel array driving method, the inventor actively researches and innovates based on years of rich practical experience and professional knowledge in the design and manufacture of such products, in order to create a new pixel array driving method. The general existing driving method of the pixel array can be improved to make it more practical. Through continuous research, design, and after repeated trials and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects of the existing pixel array driving method and provide a new pixel array driving method. The technical problem to be solved is to provide a high aperture ratio with stable gray scale A driving method of a pixel array of the screen, which is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A method for driving a pixel array according to the present invention is applicable to a pixel array, wherein the pixel array includes multiple pixel groups on the same row, and at least one pixel group includes multiple pixels, and the driving method of the pixel array The method includes: using a potential that is substantially the same phase as the pixel electrode potential of each pixel in a pixel group, and using a potential that is substantially opposite in phase as the pixel electrode potential of each pixel in two adjacent pixel groups; One gate line drives two adjacent pixels located at the junction of two adjacent pixel groups; and the same gate line drives a first pixel in a pixel group and a substantially Pixels with pixel electrode potentials of different phases.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned method for driving a pixel array, each pixel group includes three pixels.

In the aforementioned method for driving a pixel array, each pixel group includes pixels whose number is an integer multiple of three.

The aforementioned method for driving a pixel array, wherein the same gate line is used to drive the first pixel in a pixel group and the pixel electrode potentials having substantially different phases on the columns adjacent to the first pixel The step of selecting a pixel is to use the pixels on the row adjacent to the first pixel.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions. A method for driving a pixel array according to the present invention is applicable to a pixel array, wherein the pixel array includes a plurality of pixel groups on the same row, at least one pixel group includes a plurality of pixels, and each pixel group corresponds to In a data line group comprising the same number of data lines as the pixels of the pixel group, and the polarities of adjacent data lines are different, the driving method of the pixel array includes: judging a previous data line and a Whether the current data line belongs to the same data line group; if the previous data line and the current data line belong to different data line groups, make the current data line drive the pixel behind the pixel driven by the previous data line; and When the previous data line and the current data line belong to the same data line group, make the current data line drive the pixels in an adjacent row other than the pixel group driven by the previous data line.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned method for driving a pixel array, each pixel group includes three pixels.

In the aforementioned method for driving a pixel array, each pixel group includes pixels whose number is an integer multiple of three.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the aforementioned object of the invention, the main technical contents of the present invention are as follows:

The invention provides a driving method of a pixel array, which is suitable for the pixel array. The pixel array includes a plurality of pixel groups on the same row, and at least one pixel group includes a plurality of pixels. In this driving method, the potentials of substantially the same phase are used as the potentials of the pixel electrodes of the pixels in the same pixel group, and the potentials of substantially opposite phases are respectively used as the potentials of the pixel electrodes of the pixels in two adjacent pixel groups. Furthermore, the same gate line is used to drive two adjacent pixels located at the junction of two adjacent pixel groups, and the same gate line is used to drive the first pixel in a pixel group and the first pixel adjacent to the first pixel. Columns of pixels having pixel electrode potentials of substantially different phases.

In a preferred embodiment of the present invention, each pixel group includes three pixels or pixels whose number is an integer multiple of three.

The present invention further proposes a driving method of the pixel array, and the driving method is applicable to the pixel array. The pixel array includes a plurality of pixel groups on the same row, at least one pixel group includes a plurality of pixels, and each pixel group corresponds to a data line group, and the number of data lines included in a data line group is the same as the pixel group It has the same number of pixels. The driving method of the pixel array first determines whether the previous data line and the current data line belong to the same data line group. If the previous data line and the current data line belong to different data line groups, make the current data line drive the pixel behind the pixel driven by the previous data line; otherwise, make the current data line drive the pixel located behind the previous data line Pixels of an adjacent row other than the pixel group in which it is located.

By virtue of the above technical solutions, the present invention has at least the following advantages:

It can be seen from the above driving method that the driving method of the pixel array of the present invention will make the potential polarities of the two adjacent data lines of each pixel different, so that the coupling capacitance will have the same effect as subtraction, so it can be Reduce interaction effects.

Furthermore, in the case that each pixel group includes three pixels or pixels whose number is an integer multiple of three, since the pixels G, B, and R included in each pixel group all have the same degree of interaction, Therefore, uniform brightness and stable grayscale images can be provided.

In addition, in the same horizontal direction, the potential polarity of the pixel electrode can be maintained as +++---+++---+++---...... drive mode, which is used to reduce the lateral The ratio of the electric field can make it have the advantage of high aperture ratio, which is more suitable for practical use.

To sum up, the special pixel array driving method of the present invention can provide a driving method of a pixel array with a high aperture ratio and a stable gray scale image. It has the above-mentioned many advantages and practical value, and no similar design has been published or used in similar methods, so it is indeed an innovation. It has great improvements in both methods and functions, and has a relatively large technical advantage. It has made great progress, and has produced easy-to-use and practical effects, and has improved multiple functions compared with the existing pixel array driving method, so it is more suitable for practical use, and has wide application value in the industry. It is a novel, Progressive, practical new design.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Description of drawings

FIG. 1 is a schematic diagram of a thin film transistor driving circuit.

FIG. 2 is a schematic diagram of a conventional driving device for a thin film transistor array in a 3N*1 driving mode.

FIG. 3 is a schematic diagram of a driving circuit used in implementing a driving method for a pixel array according to a preferred embodiment of the present invention.

FIG. 4 is a schematic flowchart of a driving method of a pixel array according to another preferred embodiment of the present invention.

FIG. 5 is a circuit diagram used when implementing a driving method for a pixel array according to another preferred embodiment of the present invention.

30: Pixel array 103: Data line

105: Gate line 107: Thin film transistor

109: Liquid crystal capacitor 111: Storage capacitor

201～219: Coupling capacitor 222: Pixel G

225: Pixel B 227: Pixel R

306～324, 506～521: data line

327～333, 530～536: gate line

340～366, 540～558: pixels

370～396, 570～578: access

S400: Distinguish between pixel groups and corresponding data line groups

S402: Do the data lines of the previous level belong to the same data line group?

S404: Driving pixels in different columns

S406 : driving consecutive pixels

Detailed ways

The specific methods, steps, features and effects of the pixel array driving method according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

The following descriptions mainly focus on TFT liquid crystal displays, but those skilled in the art should know that this driving method can be applied to any similar array display driving device.

The thin film transistor type liquid crystal display is mainly composed of a thin film transistor array substrate, a color filter array substrate and a liquid crystal layer, wherein the thin film transistor array substrate is composed of a plurality of thin film transistors arranged in an array, and each thin film transistor is configured composed of one pixel. Each pixel contains two pieces of pixel electrodes, one of which is electrically coupled to a common potential, and the other is coupled to the data controlled by the thin film transistor whether it is electrically connected to the pixel electrode or not. Wire.

The above-mentioned thin film transistor includes a gate, a drain and a source, and is used as a switch component of a liquid crystal display unit. Among them, each pixel is controlled by one to four thin-film transistors. Due to the high update frequency, the image can have better contrast and can reduce blurred images when the screen moves, so it is also called an active liquid crystal display. It is the best imager among LCD screens but also the most expensive. An ideal thin film transistor liquid crystal display is required to have a high aperture ratio and a stable grayscale image. The so-called aperture ratio refers to the light transmittance ratio, that is, the ratio that allows the light source to be fully and more effectively projected and reduces the consumption of the light source on the thin film transistor liquid crystal panel. A liquid crystal display with a higher aperture ratio has higher brightness and lower power consumption. In addition, the so-called grayscale picture refers to the gradient from black to white, that is, a picture gradually fades from black to white, so it feels like a gradient. To show such a gradual change, it is necessary to consider the characteristics of the thin film transistor and design the potential skillfully.

Please refer to FIG. 3 , which is a schematic diagram of a driving circuit used in implementing a driving method for a pixel array according to a preferred embodiment of the present invention. In this embodiment, the pixel array 30 includes a plurality of data lines 306-324, a plurality of gate lines 327-333, a plurality of pixels 340-366, and a plurality of The potential on data lines 306-324 is provided to vias 370-396 of pixels 340-366. For example, in a thin film transistor type liquid crystal display, each of these paths 370-396 is composed of a thin film transistor, and the gate lines 327-333 are its gate control lines, and the data line 306 ˜324 are electrically connected to the pixel electrodes of the pixels 340-366 and their source/drain terminals.

In addition, in this embodiment, the circuit layout is explained by taking the situation of the potential distribution of the pixel electrodes as described in FIG. 2 as an example. In order to enable the driving method provided by the present invention to make the potential distribution of the pixel electrodes of each pixel the same as that shown in FIG. While reducing interaction effects, it can also provide uniform brightness and stable grayscale images, and can also have the advantages of reducing the ratio of the lateral electric field and high aperture ratio. The potential of the same phase phase (such as the same positive or the same negative) is used as the pixel electrode potential of each pixel in each pixel group, and the potential of the opposite phase (such as one is positive and the other is negative) is respectively is the pixel electrode potential of each pixel in two adjacent pixel groups. In this way, the potential distribution of the pixel electrodes as shown in FIG. 2 can be formed as +++---+++---+++---....... When designing the paths 370-396, it is necessary to make the pixel array 30 able to use the same gate line (such as the gate line 330) to drive two adjacent pixels located at the junction of two adjacent pixel groups, and to use the same One gate line drives a certain pixel in the same pixel group and pixels having pixel electrode potentials of substantially different phases on a column adjacent to the pixel.

For example, if the pixels 340-344 are the first pixel group, the pixels 346-350 are the second pixel group, the pixels 354-358 are the third pixel group, and the pixels 360-364 are the fourth pixel group, then it must be substantially The pixel electrodes of the pixels in the first pixel group and the fourth pixel group are driven at a potential in the same phase (such as a positive potential) above, and are driven at a potential that is substantially opposite to the potential (such as a negative potential) that drives the first pixel group. The pixel electrodes of the pixels in the second pixel group and the third pixel group are driven.

On the premise that the positive and negative potentials are the potentials provided by the data lines 306-324, if the potentials starting from the data line 306 are respectively +-+-+-+-, then under the control of the gate line 330 , it is necessary to guide the potentials provided by the data lines 306-324 into the pixels that need to have the potentials of the opposite electrodes respectively. Here, in order to simplify the complexity of circuit design, this embodiment is based on two adjacent rows of pixels (that is, a row of pixels sandwiched by gate lines 327 and 330 and another row of pixels sandwiched by gate lines 330 and 333 Pixel) is an object for designing a circuit path. Therefore, the positive potential provided by the data line 306 will enter the pixel electrode of the pixel 340 through the path 370 controlled by the gate line 330, thereby making the pixel electrode of the pixel 340 a positive potential. Next, since the data line 309 provides a negative potential, it cannot be introduced to the pixel electrode of the pixel 342 which is expected to be a positive potential. Instead, the negative potential provided by the data line 309 will be introduced into the pixel 356 located in the same column as the pixel 342 and whose expected pixel electrode potential should be negative.

Next, the positive potential provided by the data line 312 enters the pixel electrode of the last pixel 344 in the first pixel group due to the same relationship as the data line 306 and the pixel 340 described above. For the first pixel 346 in the second pixel group adjacent to the first pixel group, since it is originally expected that the potential of the pixel electrode of this pixel 346 should be a negative potential, the negative potential carried by the data line 315 It can be provided to the pixel 346 directly via the path 376 . After that, the remaining pixels 348-366 will also be driven in a similar manner.

In other words, after the pixel group is set, according to this embodiment of the present invention, the potentials of the pixel electrodes in each pixel in a certain pixel group will be set at the potentials with substantially the same phase, and with the potentials with substantially opposite phases. The potential is used as the pixel electrode potential of each pixel in two adjacent pixel groups. In addition, in this embodiment, the same gate line is used to drive two adjacent pixels located at the junction of two adjacent pixel groups, and the same gate line is used to drive a certain pixel in a pixel group. and pixels having pixel electrode potentials of substantially different phases on columns adjacent to the pixel.

In order to consider regularity and design simplicity, it is suggested that each pixel group contains the same pixels. Furthermore, if the number of pixels contained in each pixel group is 3 or an integer multiple of 3, the three colors R, G, and B that make up a point on the screen can be divided into the same pixel group, so the Color balance can be further achieved. In addition, in fact, the number of pixels that can be included in each pixel group does not have to be constant, and those skilled in the art should adjust it according to their own needs.

Please refer to FIG. 4 , which is a schematic flowchart of a driving method of a pixel array according to another preferred embodiment of the present invention. In this embodiment, firstly, the pixels in the pixel array must be grouped according to the row where they are located, and one of the grouping methods is the general embodiment shown in FIG. 3 . However, this does not limit the scope of application of this embodiment, in fact, as long as the pixels on the same row can be classified into the same group. Furthermore, in addition to grouping the pixels, the data lines used for driving each pixel must also be grouped correspondingly (step S400 ). Of course, the grouping here may be only a logical grouping, not necessarily an actual circuit grouping.

After grouping, it is necessary to judge the relationship between a current data line under current control and the previous data line before the current data line during formal driving (step S402). If the current data line and the previous data line belong to the same data line group, the data provided by the current data line must be used to drive pixels belonging to different rows from the pixels driven by the previous data line (step S404 ). On the contrary, if the current data line and the previous data line do not belong to the same data line group, then use the data provided by the current data line to drive the pixels following the pixels driven by the previous data line (step S406 ).

Please refer to FIG. 5 , which is a circuit when the driving method according to another preferred embodiment of the present invention is applied. From the point of view of the actual circuit, if the pixels 540 and 542 are used as the first pixel group, and the pixels 544-548 are used as the second pixel group, then the corresponding data lines 506 and 509 will also be set as the first data line group , and the data lines 512-518 are set as the second data line group. According to the steps provided by the embodiment shown in FIG. 4 , first the data line 506 is used to drive the pixel 540 . Next, when it is necessary to determine the driving pixel of the data line 509, since the data line 509 (the aforementioned current data line at this time) and the data line 506 (the aforementioned previous data line at this time) belong to the same data line group , so the data line 509 must be used to drive the pixels that do not belong to the first pixel group (in the circuit shown in FIG. 5 , it is used to drive the pixel 552). In contrast, when determining the driving pixel of the data line 512, since the data line 512 (the aforementioned current data line at this time) and the data line 509 (the aforementioned previous data line at this time) do not belong to the same data line group , so the data line 512 will be used to drive the pixel 554, that is, the pixel located behind the pixel driven by the previous data line.

It should be noted that although the above-mentioned embodiments all take fixed channels (370-396 and 570-578) as examples, in fact, these channels can be set to change according to corresponding control signals. electrically coupled pixels.

In order to enable the liquid crystal display to have brighter brightness and lower power consumption, what can be improved is to reduce the size of the thin film transistor and increase the aperture ratio. Higher carrier mobility can enable small-sized thin film transistor components to maintain sufficient drive current, and high aperture ratio can reduce parasitic and heavy-duty by fully self-aligning the source/drain regions in the process. It can be achieved by the size of stack capacitor and storage capacitor. Because the hysteresis effect caused by the capacitance is a major factor leading to insufficient brightness of the liquid crystal display.

To sum up, with the driving method provided by the present invention, the potential polarities of the data lines on the left and right of the pixel can be made to be different, so that the coupling capacitance in the pixel can produce an effect equivalent to subtraction, reducing the interaction effect. Furthermore, when the interactive effects of the pixel G, the pixel B, and the pixel R are all the same, a uniform and stable gray scale image can be provided. In addition, if the potentials of the pixel electrodes are arranged in the form of +++---+++---+++--- in the same horizontal direction, the ratio of the lateral electric field can be further reduced, so that it has a high opening rate advantage.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the method and technical content disclosed above to make some changes or modifications to equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (7)

1. A driving method for a pixel array, applicable to a pixel array, wherein the pixel array includes a plurality of pixel groups on the same row, and at least one pixel group includes a plurality of pixels, the driving method for the pixel array include: Taking the potential of substantially the same phase as the pixel electrode potential of each pixel in a pixel group, and using the potential of substantially opposite phase as the pixel electrode potential of each pixel in two adjacent pixel groups; Using the same gate line to drive two adjacent pixels located at the junction of two adjacent pixel groups; and using the same gate line to drive a first pixel in a pixel group and a column adjacent to the first pixel Pixels having pixel electrode potentials that are substantially out of phase. 2. The driving method of a pixel array according to claim 1, wherein each pixel group includes three pixels. 3. The driving method of a pixel array according to claim 1, wherein each pixel group includes pixels whose number is an integer multiple of three. 4. The driving method of the pixel array according to claim 1, wherein the same gate line is used to drive the first pixel in a pixel group and the columns adjacent to the first pixel The step of pixels having pixel electrode potentials of substantially different phases is performed using pixels on a row adjacent to the first pixel. 5. A driving method for a pixel array, applicable to a pixel array, wherein the pixel array includes a plurality of pixel groups on the same row, at least one pixel group includes a plurality of pixels, and each pixel group corresponds to In a data line group comprising the same number of data lines as the pixels of the pixel group, and each adjacent data line has a different polarity, the driving method of the pixel array includes: judging whether a previous data line and a current data line belong to the same data line group; When the previous data line and the current data line belong to different data line groups, make the current data line drive a pixel located behind the pixel driven by the previous data line; and When the previous data line and the current data line belong to the same data line group, make the current data line drive the pixels in an adjacent row other than the pixel group driven by the previous data line. 6. The driving method of a pixel array according to claim 5, wherein each pixel group comprises three pixels. 7. The driving method of a pixel array according to claim 5, wherein each pixel group includes pixels whose number is an integer multiple of three.

Images