CN113393791A

CN113393791A - Display panel driving method and device and display device

Info

Publication number: CN113393791A
Application number: CN202110555296.3A
Authority: CN
Inventors: 康志聪; 袁海江
Original assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-09-14
Anticipated expiration: 2041-05-20
Also published as: CN113393791B

Abstract

The application discloses a driving method of a display panel, the display panel and a display device, wherein two rows of adjacent sub-pixel groups are connected with the same data line and the same scanning line respectively, each sub-pixel group comprises two sub-pixels, the two sub-pixels are connected with the same scanning line and the same data line, storage capacitors of the two sub-pixels are connected with a first common electrode line respectively, the storage capacitors of the two adjacent sub-pixels in the two rows of adjacent sub-pixel groups are connected with the same first common electrode line, the pixel capacitors of the sub-pixels are connected with opposite sides of a pixel electrode, the data voltage on each data line is controlled to be switched at intervals of one frame polarity, common electrode signals on each first common electrode line are controlled to be switched at driving periods of four frames of pixel driving, and half of the scanning lines and the common electrode lines are basically reduced through the common scanning lines and the first common electrode lines, the effective aperture opening ratio of the display panel is increased, and the penetration rate is improved.

Description

Display panel driving method and device and display device

Technical Field

The present disclosure relates to the field of display panel technologies, and in particular, to a driving method and device for a display panel, and a display device.

Background

At present, a large-sized display panel needs a large viewing angle, and during a pixel driving process, the large viewing angle brightness is rapidly saturated with voltage, so that the viewing angle image quality contrast and the color cast are seriously deteriorated compared with the front-view image quality. The common way to solve the color shift of the viewing angle is to divide each sub-pixel of the display panel into a main pixel and a sub-pixel, and to apply different driving voltages to the main pixel and the sub-pixel, such a design usually needs to design a metal trace or a TFT element to drive the sub-pixel, which results in the sacrifice of the light-permeable opening area, the influence on the panel transmittance, and the direct increase of the backlight cost.

Disclosure of Invention

The present disclosure provides a driving method of a display panel, a display panel and a display device, and aims to solve the problem of decreasing aperture ratio and penetration during driving a large-sized display panel.

To achieve the above object, the present application proposes a driving method of a display panel, the display panel including:

the pixel array comprises a plurality of pixel groups, each pixel group comprises two rows of adjacent sub-pixel groups, the two rows of adjacent sub-pixel groups are connected with the same data line and the same scanning line respectively, each sub-pixel group comprises two sub-pixels, the two sub-pixels are connected with the same scanning line and the same data line, the storage capacitors of the two sub-pixels are connected with a first common electrode line respectively, the storage capacitors of the two adjacent sub-pixels in the two rows of adjacent sub-pixel groups are connected with the same first common electrode line, and the pixel capacitors of the sub-pixels are connected with the common electrodes on the opposite sides of the pixel electrodes; the polarities of the voltages on the two adjacent first common electrode lines are opposite;

the driving method of the display panel includes:

controlling the data voltage on each data line to be driven by four frames of pixels into a driving period, and switching the polarities of the data voltages on the data lines one frame at intervals in the driving period;

and controlling common electrode signals on the first common electrode lines to perform polarity switching by taking four-frame pixel driving as a driving period, wherein the polarity switching direction of the common electrode signals on the same first common electrode line from the charging-before-charging to the charging-completed polarity switching direction is sequentially from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity.

In one embodiment, the step of controlling the common electrode signals on the first common electrode lines to perform polarity switching in one driving cycle of four-frame pixel driving, and the step of sequentially switching the common electrode signals on the same first common electrode line from the polarity switching direction of charging before charging to the polarity switching direction of charging after charging to the first polarity, the second polarity to the first polarity, and the first polarity to the second polarity comprises:

two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be positive in driving of the pixels in the first frame of the driving period, controlling the common electrode signals of the nth row sub-pixels to be switched from a low level before charging to a high level after charging, and controlling the common electrode signals of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be positive in the driving process of the second frame pixels in the driving period, controlling the common electrode signals of the nth row sub-pixels to be switched from a high level before charging to a low level after charging, and controlling the common electrode signals of the (n + 1) th row sub-pixels to be switched from the low level before charging to the high level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the third frame pixel driving of the driving period, the common electrode signals of the nth row sub-pixels are controlled to be switched from a high level before charging to a low level after charging, and the common electrode signals of the (n + 1) th row sub-pixels are controlled to be switched from the low level before charging to the high level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the fourth frame pixel driving of the driving period, the common electrode signal of the nth row sub-pixels is controlled to be switched from the low level before charging to the high level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the high level before charging to the low level after charging.

two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels:

when the data voltage of the nth row sub-pixel and the (n + 1) th row sub-pixel is controlled to be positive in driving of the first frame pixel in the driving period, controlling the common electrode signal of the nth row sub-pixel to be switched from a high level before charging to a low level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixel to be switched from the low level before charging to the high level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be positive in the driving process of the second frame pixels in the driving period, controlling the common electrode signals of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signals of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the third frame pixel driving of the driving period, the common electrode signals of the nth row sub-pixels are controlled to be switched from a low level before charging to a high level after charging, and the common electrode signals of the (n + 1) th row sub-pixels are controlled to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the fourth frame pixel driving of the driving period, the common electrode signal of the nth row sub-pixels is controlled to be switched from a high level before charging to a low level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the low level before charging to the high level after charging.

when the data voltage for controlling the sub-pixels of the nth row and the sub-pixels of the (n + 1) th row is negative polarity during the first frame pixel driving of the driving period, controlling the common electrode signal of the sub-pixels of the nth row to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the sub-pixels of the (n + 1) th row to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the second frame pixel driving of the driving period, the common electrode signals of the nth row sub-pixels are controlled to be switched from a high level before charging to a low level after charging, and the common electrode signals of the (n + 1) th row sub-pixels are controlled to be switched from the low level before charging to the high level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be positive in the third frame pixel driving of the driving period, controlling the common electrode signal of the nth row sub-pixels to be switched from the high level before charging to the low level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the low level before charging to the high level after charging;

when the data voltage of the nth row sub-pixel and the (n + 1) th row sub-pixel is controlled to be positive polarity during the fourth frame pixel driving of the driving period, the common electrode signal of the nth row sub-pixel is controlled to be switched from the low level before charging to the high level after charging, and the common electrode signal of the (n + 1) th row sub-pixel is controlled to be switched from the high level before charging to the low level after charging.

two rows of sub-pixels in the same group are respectively the nth row of sub-pixels and the (n + 1) th row of sub-pixels

When the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative polarity during the first frame pixel driving of the driving period, the common electrode signal of the nth row sub-pixels is controlled to be switched from a high level before charging to a low level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the low level before charging to the high level after charging;

when the data voltage for controlling the sub-pixels of the nth row and the sub-pixels of the (n + 1) th row is negative during the second frame pixel driving of the driving period, controlling the common electrode signal of the sub-pixels of the nth row to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the sub-pixels of the (n + 1) th row to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be positive in the third frame pixel driving of the driving period, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

when the data voltage of the nth row sub-pixel and the (n + 1) th row sub-pixel is controlled to be positive polarity during the fourth frame pixel driving of the driving period, the common electrode signal of the nth row sub-pixel is controlled to be switched from a high level before charging to a low level after charging, and the common electrode signal of the (n + 1) th row sub-pixel is controlled to be switched from the low level before charging to the high level after charging.

In one embodiment, the polarities of the data voltages on the data lines of two adjacent columns are opposite.

In one embodiment, the driving method of the display panel further includes:

and performing column inversion driving on each sub-pixel.

To achieve the above object, the present application also proposes a driving apparatus of a display panel, the display panel including:

the pixel array comprises a plurality of pixel groups, each pixel group comprises two rows of adjacent sub-pixel groups, the two rows of adjacent sub-pixel groups are connected with the same data line and the same scanning line respectively, each sub-pixel group comprises two sub-pixels, the two sub-pixels are connected with the same scanning line and the same data line, the storage capacitors of the two sub-pixels are connected with a first common electrode line respectively, the storage capacitors of the two adjacent sub-pixels in the two rows of adjacent sub-pixel groups are connected with the same first common electrode line, and the pixel capacitors of the sub-pixels are connected with the common electrodes on the opposite sides of the pixel electrodes; the polarities of the voltages on the two adjacent first common electrode lines are opposite, and the polarities of the data voltages on the data lines of the sub-pixels in each group positioned in the same column are the same; the driving device of the display panel includes:

the source driving circuit is configured to output data voltages with switched positive and negative polarities to each data line by taking four frames as a driving period, and the data voltages on the data lines are switched by one frame polarity in one driving period;

the output end of the common electrode voltage circuit is connected with each first common electrode wire, the common electrode voltage circuit is configured to output a common electrode voltage switched by high and low levels to each first common electrode wire by taking four frames as a driving period, wherein the common electrode signal on the same first common electrode wire is sequentially switched from a first polarity to a second polarity, from the second polarity to the first polarity and from the first polarity to the second polarity in a polarity switching direction switched from charging before charging to charging after pixel driving of the four frames;

the driving device of the display panel is further provided with a processor, a memory and a driving program of the display panel, which is stored on the memory and can run on the processor, wherein the driving program of the display panel is configured to realize the steps of the driving method of the display panel.

To achieve the above object, the present application also proposes a display device including the driving device of the display panel as described above.

According to the technical scheme, in each sub-pixel group in one frame, the same column of data voltage in the same sub-pixel group has the same polarity, and the common electrode voltage on the first common electrode has different levels, so that the brightness displayed by the two sub-pixels is different in brightness. In addition, during a driving period, the positive polarity and the negative polarity of the data voltage on each data line are controlled to be switched, and the voltage level of the common electrode on each first common electrode line is controlled to be switched in a driving period of four frames, so that the display brightness of two sub-pixels in the same row in the same group is switched between brighter and darker in a unit of two frames, and the display brightness of two sub-pixels in adjacent rows in one frame is switched between brighter and darker. And the two adjacent sub-pixels in the same row can have darker and brighter changes, and for the complete row, the whole body is sequentially and alternately changed in brightness and darkness. When the whole display panel shows the brightness difference, the display panel is displayed with relatively uniform brightness, so that the problem of image quality color cast caused by visual angle deviation is solved; and this application has reduced scanning line and public electrode line half basically through sharing scanning line and first public electrode line, consequently, has increased display panel's effective aperture ratio, has promoted the penetration rate, and the cost also can reduce in addition.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an internal circuit structure of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a frame driving period according to an embodiment of the present disclosure;

FIG. 3 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present disclosure;

FIG. 4 is a detailed flowchart of a first embodiment of a driving method of a display panel of the present application in step S200;

FIG. 5 is a schematic diagram illustrating a driving timing relationship according to the embodiment shown in FIG. 4;

FIG. 6 is a schematic diagram illustrating a driving timing relationship according to another embodiment of FIG. 4;

FIG. 7 is a detailed flowchart of a second embodiment of the driving method of a display panel of the present application in step S200;

FIG. 8 is a schematic diagram illustrating a driving timing relationship according to the embodiment shown in FIG. 7;

FIG. 9 is a schematic diagram illustrating a driving timing relationship according to another embodiment of the present invention shown in FIG. 7;

FIG. 10 is a detailed flowchart of a third embodiment of a driving method of a display panel of the present application in step S200;

FIG. 11 is a detailed flowchart of a fourth embodiment of a driving method of a display panel of the present application in step S200;

fig. 12 is a schematic structural diagram of a display panel driving apparatus according to an embodiment of the present application.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the description in this application referring to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is: the method comprises three parallel schemes, wherein the scheme is taken as an A/B (A/B) as an example, the scheme comprises the scheme A, the scheme B or the scheme A and the scheme B simultaneously satisfy, in addition, the technical schemes between the various embodiments can be combined with each other, but the technical schemes must be based on the realization of the technical schemes by a person skilled in the art, and when the technical schemes are mutually contradictory or can not be realized, the combination of the technical schemes is not considered to exist, and is not in the protection scope required by the application.

The present application provides a display panel, as shown in fig. 1, the display panel includes a plurality of pixel groups 101, each pixel group 101 includes two rows of adjacent sub-pixel groups 101n, the two rows of adjacent sub-pixel groups 101n connect to a same data line Datam and respectively connect to a scan line Gn and Gn +1, each sub-pixel group includes two sub-pixels, the two sub-pixels connect to a same scan line and a same data line, storage capacitors of the two sub-pixels respectively connect to a first common electrode line Vstn _1 and Vstn _2, or Vstn +1_1 and Vstn +1_2, storage capacitors of two adjacent sub-pixels in the two rows of adjacent sub-pixel groups connect to a same first common electrode line, and pixel capacitors of the respective sub-pixels connect to a common electrode line on the opposite side; the polarities of the voltages on the two adjacent first common electrode lines are opposite, and the polarities of the voltages on the two adjacent data lines are opposite.

Based on the display panel, the present application provides a driving method of a display panel, as shown in fig. 2, in this embodiment, the driving method of the display panel includes:

step S100, controlling the data voltage on each data line to take four-frame pixel driving as a driving period, and switching the polarity of the data voltage on the data line one frame at intervals in the driving period;

step S200, controlling the common electrode signals on each first common electrode line to perform polarity switching with four-frame pixel driving as one driving cycle, and sequentially switching the common electrode signals on the same first common electrode line from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity in the polarity switching direction from charging before to charging after the four-frame pixel driving.

In the process of driving each frame of pixels, the time schedule controller controls the current frame of pixels through the data lines, divides two adjacent rows of sub-pixels into a group and drives simultaneously, and drives successively in the form of taking the group as a unit.

In this embodiment, as shown in fig. 1, the data signals are driven in a column inversion manner, that is, in the same frame of pixel driving, the polarity of the data signal on the same data line is kept unchanged, and the polarities of the data signals on adjacent data lines are opposite, so that in cooperation with the driving of the common electrode signal, driving voltages with the same polarity but different levels of adjacent sub-pixels are finally formed, so as to realize relatively uniform brightness change of a column of sub-pixels.

In order to realize uniform brightness change between different frames, in the pixel driving periods of different frames, the polarities of the data signals on the same data line and the polarity of the common electrode signals on the first common electrode line change along with different preset rules.

It is to be understood that the polarity control of the sub-pixels referred to herein means the positive polarity driving or negative polarity driving control of the sub-pixels. The positive polarity driving of the sub-pixels means that the voltage value of a driving voltage signal loaded by a data line is greater than a reference voltage signal Vcom on a common electrode line opposite to a pixel electrode; the negative polarity driving means that the voltage value of the driving voltage signal loaded on the data line is smaller than the voltage value of the reference voltage signal Vcom on the common electrode line opposite to the pixel electrode. The polarity of the sub-pixels is determined by the voltage difference between the data signal and the reference voltage Vcom on the common electrode line opposite to the pixel electrode, and when the voltage difference is greater than 0, the polarity is positive and is usually indicated by a "+" sign; when the voltage difference is less than 0, the polarity is negative, generally indicated by a "-" sign. Therefore, the opposite polarities of the data driving voltage signals of any two adjacent groups in this embodiment can be understood as follows: when the polarity of the data driving voltage signal of one group is positive, the polarity of the data driving voltage signal of the other group is negative.

In this embodiment, in the column inversion driving manner, the sub-pixels on the two adjacent common electrode lines are driven by high and low levels, and finally, driving voltages with the same polarity and different levels are formed for the adjacent sub-pixels, so that the luminance displayed by the two sub-pixels in the same group in the same column is changed in brightness. In the column inversion driving method, the polarities of the driving signals of the data lines in adjacent columns are inverted so that the polarities of the sub-pixels in any two adjacent columns are opposite, and thus, in the same group, two of the sub-pixels in two adjacent columns have high display luminance and the display luminance in the other column is dark, that is, in the same row, the adjacent sub-pixels also change in luminance and in darkness. When the whole display panel shows the brightness change, the display panel is displayed with relatively uniform brightness, so that the problem of image quality color cast caused by visual angle deviation is solved; and this application has reduced scanning line and first public electrode line half basically through sharing scanning line and first public electrode line, consequently, has increased display panel's effective aperture ratio, has promoted the penetration rate, and the cost also can reduce in addition.

In the embodiment, the polarity change of the data signal is performed in a period of four frames, the polarity of the data signal input to the same sub-pixel in the first frame pixel driving and the second frame pixel driving is the same, the polarity of the data signal is switched when the data signal is switched to the third frame, the polarity of the data signal of the fourth frame maintains the polarity of the data signal of the third frame, meanwhile, the polarity of the common electrode signal is switched in the same switching direction polarity in the four frame driving periods, the switching period of the high level and the low level of the common electrode signal is the high level and the low level of each frame, that is, the polarity switching direction is sequentially the first polarity to the second polarity, the second polarity to the first polarity and the first polarity to the second polarity after the sub-pixel is charged, the first polarity and the second polarity are opposite to each other, when the first polarity is low, the second polarity is high, and vice versa, therefore, when the pixel driving period is switched, the high and low levels of the common electrode signal of the same sub-pixel are also switched in different frame driving, so that the same sub-pixel cannot maintain the high level or the low level, the problems that the grain sensation is easily seen on the picture quality and the resolution is reduced because the high level or the low level signal is maintained at the same sub-pixel position in space are avoided, and the defect of color cast of the liquid crystal display screen in the view angle can be improved while the resolution problem is solved.

According to the polarity change rule of the data signal and the polarity change rule of the common electrode signal, the sub-pixels on the display panel have the following four states.

In a first embodiment, as shown in fig. 4, the step of controlling the common electrode signals on the first common electrode lines to perform polarity switching with four frames of pixel driving as one driving cycle, and the polarity switching direction of the common electrode signals on the same first common electrode line from pre-charging to charging after four frames of pixel driving sequentially comprises:

step S211, two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels;

step S212, when the first frame of pixel driving of the driving cycle, when the data voltage of the nth row of sub-pixels and the (n + 1) th row of sub-pixels is controlled to be positive, the common electrode signal of the nth row of sub-pixels is controlled to be switched from the low level before charging to the high level after charging, and the common electrode signal of the (n + 1) th row of sub-pixels is controlled to be switched from the high level before charging to the low level after charging;

step S213, during the second frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row sub-pixels to be switched from the high level before charging to the low level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the low level before charging to the high level after charging;

step S214, during the third frame of pixel driving of the driving cycle, when the data voltage of the nth row sub-pixels and the (n + 1) th row sub-pixels is controlled to be negative, the common electrode signal of the nth row sub-pixels is controlled to be switched from the high level before charging to the low level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the low level before charging to the high level after charging;

step S215, during the fourth frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, the common electrode signal of the nth row sub-pixels is controlled to be switched from the low level before charging to the high level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the high level before charging to the low level after charging.

In the present embodiment, when the change rule of the data signal of the same sub-pixel in the frame driving period is positive polarity driving, negative polarity driving and negative polarity driving, the driving voltage of the same sub-pixel in the frame driving period changes, the present embodiment is described by taking two sub-pixels driven by the mth column data line, the nth row scanning line, the nth row common electrode line and the nth _2 row common electrode line as an example, in the first frame pixel driving of the driving period, the mth column scanning signal of the nth row is activated, the data signal Datam-n of the sub-pixel connected to the scanning signal is activated at frame1, the positive polarity driving Datam-n > Vcom is adopted, the sub-pixel m-n _1 adjacent to the scanning signal is charged, the scanning signal stops inputting, as shown in frame1 of fig. 5, and at this time, the Vpm-n _1 signal of the sub-pixel is switched from low level to high level, at this time, due to the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n _1 increases by Δ V because the common electrode signal Vstn _1 is switched from low to high, i.e. the voltage difference between the driving voltage of the sub-pixel Vpm-n _1 and the reference voltage signal Vcom changes from x to x + Δ V, and the increase of the positive polarity voltage increases the brightness of the sub-pixel.

And the sub-pixels Vpm-n _2 adjacent to the scan signal are charged completely, and the row scan signal stops being input, as shown in FIG. 6frame1 driving timing, Vstn _2 of the common electrode signal Vpm-n _2 switches from high to low, at this time, due to the parasitic capacitance, the driving voltage of the sub-pixels Vpm-n _2 decreases by Δ V downward because the Vstn _2 switches from high to low, i.e. the voltage difference between the driving voltage of the sub-pixels Vpm-n _2 and the reference voltage Vcom changes from x to x- Δ V, and the decrease of the positive polarity voltage decreases the brightness of the sub-pixels.

In the second frame of pixel driving of the driving period, the data signal Datam-n of the sub-pixel maintains the positive polarity driving Datam-n > Vcom at the time of frame2, the scan signal stops after the sub-pixel Vpm-n _1, and referring to fig. 5frame2 driving timing, at this time, the common electrode signal Vstn _1 of the sub-pixel Vpm-n _1 switches from the high level to the low level in the opposite direction of the switching of the previous frame, and at this time, due to the existence of the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n _1 is decreased by Δ V due to the switching of the common electrode signal Vstn _1 from the high level to the low level, that is, the voltage difference between the driving voltage of the sub-pixel Vpm-n _1 and the reference voltage signal Vcom is changed from x to x- Δ V, and the decrease of the positive polarity voltage by Δ V decreases the luminance of the sub-pixel.

And, after the sub-pixels Vpm-n _2 are charged, the scan signal stops being input, referring to the frame2 driving timing of FIG. 6, the common electrode signal Vstn _2 of Vpm-n _2 switches from low to high, at this time, due to the existence of the parasitic capacitance, the driving voltage of the sub-pixels Vpm-n _2 will increase Δ V upwards because the common electrode signal Vstn _2 switches from low to high, i.e. the voltage difference between the driving voltage of the sub-pixels Vpm-n _2 and the reference voltage signal Vcom changes from x to x + Δ V, and the positive voltage increases Δ V upwards to increase the brightness of the sub-pixels.

In the third frame of pixel driving of the driving period, the data signal Datam-n of the sub-pixel switches the negative polarity driving Datam-n < Vcom at frame3, the scan signal stops being input after the sub-pixel Vpm-n _1 is charged, as described with reference to the driving timing of frame3 in fig. 5, when the common electrode signal Vstn _1 of the sub-pixel Vpm-n _1 switches from high level to low level, due to the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n _1 decreases by Δ V due to the switching of the common electrode signal Vstn _1 from high level to low level, that is, the voltage difference between the driving voltage of the sub-pixel Vpm-n _1 and the reference voltage signal Vcom changes from-x to-x- Δ V, and the negative polarity voltage decreases by Δ V to increase the brightness of the sub-pixel.

And the sub-pixel Vpm-n _2 stops being charged, referring to the frame3 driving timing of FIG. 6, the Vpm-n _2 common electrode signal Vstn _2 switches from low to high, and at this time, due to the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n _2 increases by Δ V because the common electrode signal Vstn _2 switches from low to high, i.e. the voltage difference between the driving voltage of the sub-pixel Vpm-n _2 and the reference voltage signal Vcom changes from-x to-x + Δ V, and the negative voltage increases by Δ V to decrease the brightness of the sub-pixel.

In the fourth frame of pixel driving of the driving period, the data signal Datam-n of the sub-pixel maintains the negative polarity driving Datam-n < Vcom at frame4, and the scan signal stops being input after the sub-pixel Vpm-n _1 is charged, as described with reference to the driving timing of frame4 in fig. 5, when the common electrode signal Vstn _1 of the sub-pixel Vpm-n _1 is switched from low level to high level, due to the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n _1 will increase Δ V due to the switching of the common electrode signal Vstn _1 from low level to high level, that is, the voltage difference between the driving voltage of the sub-pixel Vpm-n _1 and the reference voltage signal Vcom changes from-x to-x + Δ V, and the increase Δ V increases the negative polarity voltage to decrease the brightness of the sub-pixel.

Meanwhile, as shown in the driving timing of frame4 in FIG. 6, after the sub-pixels Vpm-n _2 are charged, the common electrode signal Vstn _2 of Vpm-n _2 switches from high to low, and at this time, due to the parasitic capacitance, the driving voltage of the sub-pixels Vpm-n _2 decreases by Δ V due to the switching of the common electrode signal Vstn _2 from high to low, i.e. the voltage difference between the driving voltage of the sub-pixels Vpm-n _2 and the reference voltage signal Vcom changes from-x to-x- Δ V, and the negative voltage decreases by Δ V to increase the brightness of the sub-pixels.

Therefore, the high and low levels of the same sub-pixel are also switched in different frame driving, so that the same sub-pixel cannot maintain the high level or the low level, and the driving voltages with the same polarity and different levels of the adjacent sub-pixels are simultaneously used, thereby avoiding the problems that the granular sensation is easily seen and the resolution is reduced in the image quality caused by the fact that the high level or the low level signal is maintained at the same sub-pixel position in space, solving the problem of the resolution and simultaneously improving the defect of the color cast of the visual angle of the liquid crystal display screen.

In a second embodiment of the driving cycle, as shown in fig. 7, the step of controlling the common electrode signals on the first common electrode lines to switch the polarity of the common electrode signals in four frames of pixel driving in one driving cycle, and the polarity switching direction of the common electrode signals on the same first common electrode line from the pre-charging to the charging for the four frames of pixel driving sequentially comprises:

step S221, two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels;

step S222, during the first frame of pixel driving in the driving cycle, when the data voltages of the nth row of sub-pixels and the (n + 1) th row of sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row of sub-pixels to be switched from the high level before charging to the low level after charging, and controlling the common electrode signal of the (n + 1) th row of sub-pixels to be switched from the low level before charging to the high level after charging;

step S223, during the second frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

step S224, during the third frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

step S225, during the fourth frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, the common electrode signal of the nth row sub-pixels is controlled to be switched from the high level before charging to the low level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the low level before charging to the high level after charging.

In the present embodiment, as shown in fig. 8 and 9, the adjacent sub-pixels Vpm-n +1_1 and Vpm-n +1_2 driven by the mth column data line, the nth +1 row scan line and the nth +1_2 row common electrode line are taken as an example for explanation, the sub-pixel data signal Datam-n +1 connected to the scan signal is driven by positive polarity Datam-n +1> Vcom at the time of frame1, the scan signal stops being input after the sub-pixel Vpm-n +1_1 is charged, referring to fig. 8frame1 driving timing, the sub-pixel Vpm-n +1_1 common electrode signal Vstn +1_1 and the previous adjacent sub-pixel common electrode signal (Vstn _2 ═ Vstn +1_1) are switched from high level to low level, and the common electrode voltage of the sub-pixel m-n +1_1 is switched from high level to low level due to the existence of parasitic capacitance, that is, the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_1 and the reference voltage signal Vcom is changed from x to x- Δ V, and the decrease of the positive voltage decreases the brightness of the sub-pixel.

Meanwhile, after the sub-pixels Vpm-n +1_2 adjacent to the scan signal are charged, the scan signal stops being input, as shown in the frame1 driving timing of FIG. 9, the common electrode signal Vstn +1_2 of Vpm-n +1_2 is switched from low level to high level, and at this time, due to the existence of the parasitic capacitance, the driving voltage of the sub-pixels Vpm-n +1_2 is increased by Δ V because the common electrode signal Vstn +1_2 is switched from low level to high level, i.e. the voltage difference between the driving voltage of the sub-pixels Vpm-n +1_2 and the reference voltage signal Vcom is changed from x to x + Δ V, and the brightness of the sub-pixels is increased due to the increase of the positive polarity voltage.

In the second frame of pixel driving of the driving period, the data signal Datam-n +1 of the sub-pixel maintains the positive polarity driving Datam-n +1> Vcom at frame2, the sub-pixel Vpm-n +1_1 is charged completely, the scan signal stops being input, as shown in fig. 8frame2 driving timing, when the common electrode signal Vstn +1_1 of the sub-pixel Vpm-n +1_1 and the previous adjacent sub-pixel share the common electrode signal (Vstn _2 ═ Vstn +1_1) are switched from low level to high level, due to the parasitic capacitance, the driving voltage of the sub-pixel Vpm-n +1_1 is increased by Δ V because the common electrode signal Vstn +1_1 is switched from low level to high level, that is, the voltage difference between the driving voltage Vcom of the sub-pixel Vpm-n +1_1 and the reference voltage Vcom is changed from x to x + Δ V, and the positive polarity voltage is increased by Δ V to increase the luminance of the sub-pixel.

Referring to FIG. 9, the frame2 driving timing illustrates the sub-pixel Vpm-n +1_2, after the sub-pixel Vpm-n +1_2 is charged, the scan signal stops being input, the common electrode signal Vstn +1_2 switches from high to low, and the driving voltage of the sub-pixel Vpm-n _2 decreases by Δ V due to the parasitic capacitance, i.e. the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_2 and the reference voltage signal Vcom changes from x to x- Δ V, and the decrease of the positive voltage by Δ V decreases the brightness of the sub-pixel.

In the third frame of pixel driving of the driving period, the data signal Datam-n +1 of the sub-pixel switches the negative polarity driving Datam-n +1< Vcom in frame3 of fig. 8, the sub-pixel Vpm-n +1_1 is charged completely, the scanning signal stops being input, the common electrode signal Vstn +1_1 of the sub-pixel Vpm-n +1_1 and the common electrode signal (Vstn _2 ═ Vstn +1_1) of the previous adjacent sub-pixel are switched from low level to high level, the driving voltage of the sub-pixel Vpm-n +1_1 is increased by Δ V, the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_1 and the reference voltage Vcom is changed from-x + Δ V due to the parasitic capacitance, and the negative polarity voltage is increased by Δ V to decrease the luminance of the sub-pixel.

Meanwhile, referring to the frame3 driving timing of FIG. 9, the Vpm-n +1_2 common electrode signal Vstn +1_2 switches from high to low, and the driving voltage of the sub-pixel Vpm-n _2 decreases by Δ V due to the parasitic capacitance, i.e. the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_2 and the reference voltage signal Vcom changes from-x to-x- Δ V, and the decrease of the negative voltage Δ V increases the brightness of the sub-pixel.

In the fourth frame of pixel driving of the driving period, the data signal Datam-n +1 of the sub-pixel maintains the negative polarity driving Datam-n +1< Vcom at frame3, the sub-pixel Vpm-n +1_1 is charged completely, the scan signal stops being input, as shown in the driving timing of frame4 in fig. 8, when the common electrode signal Vstn +1_1 of the sub-pixel Vpm-n +1_1 and the common electrode signal Vstn _2 ═ Vstn +1_1) of the previous adjacent sub-pixel are switched from high level to low level, due to the parasitic capacitance, the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_1 and the reference voltage signal Vcom is changed from x to-x- Δ V, decreasing the negative voltage by Δ V increases the brightness of the sub-pixel.

Referring to FIG. 9, the frame4 driving timing shows that the common electrode signal Vstn +1_2 of Vpm-n +1_2 is switched from low to high, and the driving voltage of the sub-pixel Vpm-n _2 is increased by Δ V due to the parasitic capacitance, i.e. the voltage difference between the driving voltage of the sub-pixel Vpm-n +1_2 and the reference voltage signal Vcom is changed from-x to-x + Δ V, and the increase of the negative voltage Δ V decreases the brightness of the sub-pixel.

In a third embodiment of the driving cycle, as shown in fig. 10, the step of controlling the common electrode signals on the first common electrode lines to switch the polarity of the common electrode signals in one driving cycle of four-frame pixel driving, and the polarity switching direction of the common electrode signals on the same first common electrode line from the pre-charging to the charging for the four-frame pixel driving sequentially comprises:

step S231, two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels;

step S232, during the first frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

step S233, during the second frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, the common electrode signals of the nth row sub-pixels are controlled to be switched from the high level before charging to the low level after charging, and the common electrode signals of the (n + 1) th row sub-pixels are controlled to be switched from the low level before charging to the high level after charging;

step S234, during the third frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row sub-pixels to be switched from the high level before charging to the low level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the low level before charging to the high level after charging;

step S235, during the fourth frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging.

In this embodiment, two sub-pixels driven by the m +1 th column data line, the nth row scan line, the n _1 th row common electrode line and the n _2 th row common electrode line are taken as an example for explanation, in the driving manner in this embodiment and the first embodiment, the polarity of the data signals is opposite and the polarity of the common electrode signal varies the same, so, as can be inferred from the first embodiment, in the first frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _1 and the reference voltage signal Vcom is changed from-x to-x + Δ V, the increase of the negative polarity voltage decreases the brightness of the sub-pixel, meanwhile, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _2 and the reference voltage signal Vcom is changed from-x to-x- Δ V, and the brightness of the sub-pixel is increased by the reduction of the negative polarity voltage.

In the second frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _1 and the reference voltage signal Vcom is changed from-x to-x- Δ V, the brightness of the sub-pixel is increased by the decrease of the negative polarity voltage, and the brightness of the sub-pixel is decreased by the increase of the negative polarity voltage by the change of the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _2 and the reference voltage signal Vcom from-x to-x + Δ V.

In the third frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _1 and the reference voltage signal Vcom is changed from x to x- Δ V, the decrease of the positive polarity voltage decreases the luminance of the sub-pixel, and at the same time, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _2 and the reference voltage signal Vcom is changed from x to x + Δ V, and the increase of the positive polarity voltage increases the luminance of the sub-pixel.

And in the fourth frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _1 and the reference voltage signal Vcom is changed from x to x + Δ V, the increase of the positive polarity voltage increases the brightness of the sub-pixel, and simultaneously, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n _2 and the reference voltage signal Vcom is changed from x to x- Δ V, and the decrease of the positive polarity voltage decreases the brightness of the sub-pixel.

In a fourth embodiment of the driving cycle, as shown in fig. 11, the step of controlling the common electrode signals on the first common electrode lines to switch the polarity of the common electrode signals in one driving cycle of four-frame pixel driving, and the common electrode signals on the same first common electrode lines sequentially switch the polarity from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity in the polarity switching direction of the four-frame pixel driving from pre-charging to charging completion includes:

step S241, two rows of sub-pixels in the same group are respectively an nth row of sub-pixels and an n +1 th row of sub-pixels;

step S242, during the first frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, controlling the common electrode signal of the nth row sub-pixels to be switched from the high level before charging to the low level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the low level before charging to the high level after charging;

step S243, during the second frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be negative, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

step S244, during the third frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, controlling the common electrode signal of the nth row sub-pixels to be switched from the low level before charging to the high level after charging, and controlling the common electrode signal of the (n + 1) th row sub-pixels to be switched from the high level before charging to the low level after charging;

step S245, during the fourth frame of pixel driving in the driving cycle, when the data voltages of the nth row sub-pixels and the (n + 1) th row sub-pixels are controlled to be positive, the common electrode signal of the nth row sub-pixels is controlled to be switched from the high level before charging to the low level after charging, and the common electrode signal of the (n + 1) th row sub-pixels is controlled to be switched from the low level before charging to the high level after charging.

In this embodiment, taking the m +1 th column data line, the n +1 th row scan line, the n +1 th _1 th row common electrode line and the adjacent sub-pixels Vpm +1-n +1_1 and Vpm +1-n +1_2 as examples, in this embodiment and the driving method in the second embodiment, the data signal is opposite, and the polarity of the common electrode signal changes the same, so it is inferred from the second embodiment that, in the first frame pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_1 and the reference voltage signal Vcom changes from-x to-x- Δ V, the decrease of the negative polarity voltage increases the luminance of the sub-pixel, and at the same time, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_2 and the reference voltage signal changes from-x to-x + Δ V, the increase in the negative polarity voltage decreases the luminance of the sub-pixel.

In the second frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_1 and the reference voltage signal Vcom is changed from-x to-x + Δ V, the increase of the negative polarity voltage decreases the brightness of the sub-pixel, and simultaneously, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_2 and the reference voltage signal Vcom is changed from-x to x- Δ V, and the decrease of the negative polarity voltage increases the brightness of the sub-pixel.

In the third frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_1 and the reference voltage signal Vcom is changed from x to x + Δ V, the increase of the positive polarity voltage decreases the luminance of the sub-pixel, and at the same time, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_2 and the reference voltage signal Vcom is changed from x to x- Δ V, and the decrease of the positive polarity voltage decreases the luminance of the sub-pixel.

And in the fourth frame of pixel driving of the driving period, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_1 and the reference voltage signal Vcom is changed from x to x- Δ V, the decrease of the positive polarity voltage reduces the brightness of the sub-pixel, and simultaneously, the voltage difference between the driving voltage of the sub-pixel Vpm +1-n +1_2 and the reference voltage signal Vcom is changed from x to x + Δ V, and the increase of the positive polarity voltage increases the brightness of the sub-pixel.

In the embodiment, the voltages of the two sub-pixels with the same polarity on the same column are distributed in a high-low mode, so that the two sub-pixels display bright and dark, and for a complete column, the whole sub-pixels are sequentially and alternately changed in brightness.

The present invention also provides a driving apparatus of a display panel, the display panel including:

a plurality of pixel groups 101, wherein each pixel group 101 includes two rows of adjacent sub-pixel groups 101n, the two rows of adjacent sub-pixel groups 101n are connected to the same data line Datam and to one scan line Gn and Gn +1, each sub-pixel group includes two sub-pixels, the two sub-pixels are connected to the same scan line and the same data line, the storage capacitors of the two sub-pixels are connected to one first common electrode line Vstn _1 and Vstn _2, or Vstn +1_1 and Vstn +1_2, the storage capacitors of the two adjacent sub-pixels in the two rows of adjacent sub-pixel groups are connected to the same first common electrode line, and the pixel capacitors of the sub-pixels are connected to the pixel electrode opposite side common electrode; the polarities of the voltages on the two adjacent first common electrode lines are opposite, and the polarities of the voltages on the two adjacent data lines are opposite.

In this embodiment, the display panel is provided with a pixel array (not shown), a scan line G, a data line Datam, first common electrode lines Vstn _1, Vstn _2, Vstn +1_1, Vstn +1_2 and a pixel electrode-opposite-side common electrode, and the pixel array includes a plurality of sub-pixels. Each sub-pixel comprises an active switch (thin film transistor), a pixel capacitor Clc and a storage capacitor Cst, wherein a gate of the active switch is electrically connected to a scan line G corresponding to the sub-pixel, a source of the active switch is electrically connected to a data line corresponding to the sub-pixel, a drain of the active switch is electrically connected to one end of the pixel capacitor Clc and the storage capacitor Cst of the sub-pixel through the data line, and another end of each pixel capacitor Clc is electrically connected to a common electrode opposite to the pixel electrode. In this embodiment, two rows of sub-pixels are defined as a group of sub-pixel groups 101n, and the other ends of the storage capacitors Cst of the two sub-pixel groups 101n are respectively connected to a first common electrode line. Wherein, each sub-pixel is divided into red, green and blue sub-pixels. Every three sub-pixels of red, green and blue form a pixel. A plurality of thin film transistors constitute the thin film transistor array of the present embodiment.

As shown in fig. 12, the driving apparatus of the display panel further includes:

a source driving circuit 20, a plurality of output terminals of the source driving circuit 20 being connected to each data line, the source driving circuit 20 being configured to output data voltages with positive and negative polarities switched to each data line in a driving cycle of four frames, and the data voltages on the data lines being switched with one frame polarity interval in one driving cycle;

a common electrode voltage circuit 50, an output end of the common electrode voltage circuit 50 and each first common electrode line, the common electrode voltage circuit 50 being configured to output a common electrode voltage switched between high and low levels to each first common electrode line with four frames as a driving period, wherein the common electrode signal on the same first common electrode line is sequentially switched from a first polarity to a second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity in a polarity switching direction switched from charging before charging to charging after pixel driving of four frames;

the driving apparatus of the display panel is further provided with a processor, a memory, and a driver of the display panel stored on the memory and operable on the processor, the driver of the display panel being configured to implement the steps of the driving method of the display panel as described above.

In this embodiment, the processor may be a timing controller 10, the timing controller 10 is connected to the source driving circuit 20 and the gate driving circuit 30 respectively to provide timing control signals for the source driving circuit 20 and the gate driving circuit 30, the timing controller 10 receives image data of a picture to be displayed sent from a front end during driving of each frame, and the timing controller 10 converts the image data and the control signals received from the front end into data signals, control signals, and clock signals suitable for the source driver and the gate driver. The source driver converts received digital signals into corresponding gray scale voltage signals, when the grid driver scans line by line, all the line data signal lines transmit data signals to the pixel row to charge each sub-pixel capacitor in the pixel row, so that the signal voltage writing and maintaining of the pixel are realized, the liquid crystal molecules of the sub-pixels rotate under the voltage, the transmittance of incident light passing through the liquid crystal molecules is changed, namely, the light valve effect on the incident light is realized, the change of the brightness of the projected light is realized, and finally, the image display of the display panel is realized. The signals Output to the gate driver include a Start Vertical (STV) signal, a Clock Pulse Vertical (CPV) signal, an Enable signal (OE), and the like.

The common electrode voltage circuit 50 is connected to the first common electrode lines and the pixel electrode opposite side common electrodes to provide the reference voltage signal for the pixel electrode opposite side common electrodes, and the common electrode voltage circuit 50 also provides the common electrode signals with opposite polarities for the two adjacent first common electrode lines.

In an embodiment, the driving apparatus of the display panel further includes a gate driving circuit 30, wherein the gate driving circuit 30 is connected to the gate of each of the sub-pixels; the gate driving circuit 30 is configured to output a gate driving signal to each row of sub-pixels, so that the second common electrode Vcom and the data line are applied with corresponding voltages, and pixel capacitance charging of the sub-pixels in the corresponding row is achieved.

The invention also comprises a display device, which comprises a display panel and the driving device of the display panel, wherein the driving device of the display panel is connected with each sub-pixel of the display panel. The detailed structure of the driving device of the display panel can refer to the above embodiments, and is not described herein again; it can be understood that, since the display device of the present invention uses the driving device of the display panel, the embodiment of the display device of the present invention includes all the technical solutions of all the embodiments of the driving device of the display panel, and the achieved technical effects are also completely the same, and are not described herein again.

In the above embodiments, the display panel includes, but is not limited to, a liquid crystal display panel, an organic light emitting diode display panel, a field emission display panel, a plasma display panel, a curved panel, and the liquid crystal panel includes a thin film transistor liquid crystal display panel, a TN panel, a VA panel, an IPS panel, and the like.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related fields without departing from the spirit of the present application are intended to be included in the scope of the present application.

Claims

1. A driving method of a display panel, the display panel comprising:

the driving method of the display panel includes:

2. The method according to claim 1, wherein the step of controlling the common electrode signals on the first common electrode lines to switch polarity in one driving cycle of four-frame pixel driving, and the step of controlling the common electrode signals on the same first common electrode lines to switch from the first polarity to the second polarity, from the polarity switching direction of switching before charging to charging completion, from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity sequentially comprises:

3. The method according to claim 1, wherein the step of controlling the common electrode signals on the first common electrode lines to switch polarity in one driving cycle of four-frame pixel driving, and the step of controlling the common electrode signals on the same first common electrode lines to switch from the first polarity to the second polarity, from the polarity switching direction of switching before charging to charging completion, from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity sequentially comprises:

4. The method according to claim 1, wherein the step of controlling the common electrode signals on the first common electrode lines to switch polarity in one driving cycle of four-frame pixel driving, and the step of controlling the common electrode signals on the same first common electrode lines to switch from the first polarity to the second polarity, from the polarity switching direction of switching before charging to charging completion, from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity sequentially comprises:

when the data voltage of the m-th row of sub-pixels and the n + 1-th row of sub-pixels is controlled to be positive during the third frame of pixel driving of the driving period, controlling the common electrode signal of the n-th row of sub-pixels to be switched from a high level before charging to a low level after charging, and controlling the common electrode signal of the n + 1-th row of sub-pixels to be switched from the low level before charging to the high level after charging;

5. The method according to claim 1, wherein the step of controlling the common electrode signals on the first common electrode lines to switch polarity in one driving cycle of four-frame pixel driving, and the step of controlling the common electrode signals on the same first common electrode lines to switch from the first polarity to the second polarity, from the polarity switching direction of switching before charging to charging completion, from the first polarity to the second polarity, from the second polarity to the first polarity, and from the first polarity to the second polarity sequentially comprises:

6. The method for driving a display panel according to claim 1, wherein the data voltages on the data lines of two adjacent columns have opposite polarities.

7. The method of driving a display panel according to claim 6, further comprising:

and performing column inversion driving on each sub-pixel.

8. A driving apparatus of a display panel, the display panel comprising:

the output end of the common electrode voltage circuit is connected with each first common electrode wire and each second common electrode wire, the common electrode voltage circuit is configured to output common electrode voltages switched by high and low levels to each first common electrode wire by taking four frames as a driving period, wherein the polarity switching direction of the common electrode signals on the same first common electrode wire from the pre-charging to the charging is sequentially switched from the first polarity to the second polarity, from the second polarity to the first polarity and from the first polarity to the second polarity in the four-frame pixel driving;

the driving apparatus of a display panel is further provided with a processor, a memory, and a driver of a display panel stored on the memory and operable on the processor, the driver of the display panel being configured to implement the steps of the driving method of a display panel according to any one of claims 1 to 7.

9. The driving apparatus of a display panel according to claim 8, further comprising a gate driving circuit connected to a gate of each of the sub-pixels; the gate driving circuit is configured to output a gate driving signal to each row of sub-pixels, so that corresponding voltages are applied to the second common electrode and the data line, and the sub-pixels in the corresponding row are charged.

10. A display device comprising a display panel and a driving device of the display panel according to any one of claims 8 or 9, the driving device of the display panel being connected to each sub-pixel of the display panel.