CN109754768B

CN109754768B - Driving method and driving system of display panel

Info

Publication number: CN109754768B
Application number: CN201910089373.3A
Authority: CN
Inventors: 单剑锋
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2021-01-08
Anticipated expiration: 2039-01-30
Also published as: CN109754768A

Abstract

The invention discloses a driving method and a driving system of a display panel, wherein the driving method comprises the following steps: dividing sub-pixel signals corresponding to sub-pixels to be judged into a plurality of signal judgment intervals in advance; calculating the average value of sub-pixel signals corresponding to all sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit; and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the first adjustment mode in a first adjustment mode, and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode in a second adjustment mode.

Description

Driving method and driving system of display panel

Technical Field

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

Background

Most of the large-sized liquid crystal display panels adopt a negative Vertical Alignment (VA) liquid crystal technology or an In-Plane Switching (IPS) liquid crystal technology, and the VA liquid crystal technology has the advantages of higher production efficiency and lower manufacturing cost compared with the IPS liquid crystal technology, but has a more significant optical property defect compared with the IPS liquid crystal technology In terms of optical property, and particularly, the large-sized panels need a larger viewing angle In commercial application, that is, have more serious color cast.

Therefore, how to improve color shift is an important research topic for those skilled in the art.

Disclosure of Invention

The invention aims to provide a driving method and a driving system of a display panel, which can improve color cast and reduce granular feeling.

The invention provides a driving method of a display panel, wherein the display panel comprises a plurality of pixels, and each pixel comprises a plurality of different-color sub-pixels; at least one of the sub-pixels is a sub-pixel to be judged, two adjacent sub-pixels to be judged with the same color are used as a sub-pixel group to be judged, and each sub-pixel group to be judged comprises a first sub-pixel and a second sub-pixel; the driving method includes the steps of:

dividing sub-pixel signals corresponding to sub-pixels to be judged into a plurality of signal judgment intervals in advance;

calculating the average value of sub-pixel signals corresponding to all sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit;

driving a first sub-pixel and a second sub-pixel corresponding to the sub-pixel in the first adjustment mode in a first adjustment mode, and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode in a second adjustment mode;

under the first adjustment mode and the second adjustment mode, the average gray scales of sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel are equivalent, and the gray scale difference is different; n is a natural number more than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be judged.

Optionally, the first adjustment manner is to average gray-scale values corresponding to original sub-pixel signals corresponding to a first sub-pixel and a second sub-pixel in each sub-pixel group to be determined, and then find corresponding sub-pixel high-voltage signals and sub-pixel low-voltage signals according to the average values and a preset lookup table, so as to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined; the second adjustment mode is to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined without processing the original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined.

Optionally, in the step of dividing the sub-pixel to be determined into a plurality of periods by taking 2n adjacent sub-pixels to be determined of the same color as a period according to the signal determination interval where the average value is located, and determining the first adjustment mode sub-pixel and the second adjustment mode sub-pixel in each period by taking the sub-pixel group to be determined as a unit: dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a period according to the signal judgment interval; respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels and other sub-pixels to be determined in the period as second adjustment mode sub-pixels in each period by taking the sub-pixel group to be determined as a unit; wherein m is a natural number more than or equal to 1, and the value of 2m is less than or equal to 2 n.

Optionally, in the signal judgment interval, dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a period; the method comprises the following steps of respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels in each period by taking a sub-pixel group to be determined as a unit, and determining other sub-pixels to be determined in the period as second adjustment mode sub-pixels:

dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a group according to the signal judgment interval;

determining 2 sub-pixels to be determined as first adjustment mode sub-pixels and determining other sub-pixels to be determined in each period as second adjustment mode sub-pixels respectively;

and the larger the gray scale difference between the corresponding sub-pixel high-voltage signal and the corresponding sub-pixel low-voltage signal of the sub-pixel to be determined in the signal determination interval in which the average value is located is, the larger the value of 2n is.

Optionally, the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the sub-pixels to be judged comprise a first sub-pixel to be judged and a second sub-pixel to be judged, the first sub-pixel to be judged is all green sub-pixels, and the second sub-pixel to be judged is all red sub-pixels.

Optionally, the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the sub-pixels to be judged are all red sub-pixels.

Optionally, the signal judgment interval is sequentially divided into j signal judgment intervals according to the gray scale of the sub-pixel signal of the sub-pixel to be judged, the signal gray scale corresponding to the first signal judgment interval is minimum, and the signal gray scale corresponding to the jth signal judgment interval is maximum; wherein j is a natural number greater than or equal to 2 and less than or equal to the maximum gray scale level of the display panel.

Optionally, the display panel divides the pixels into a plurality of blocks according to physical positions; calculating the average value of sub-pixel signals corresponding to all sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; according to the signal judgment interval where the average value is located, dividing the sub-pixel to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit:

calculating a first average value of sub-pixel signals corresponding to all green sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the first average value is positioned; dividing green sub-pixels in the block into a plurality of periods by taking 2n adjacent green sub-pixels as a group according to a signal judgment interval where the first average value is located, respectively determining 2 green sub-pixels as first adjustment mode sub-pixels and other green sub-pixels in the period as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

calculating a second average value of sub-pixel signals corresponding to all red sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the second average value is positioned; according to the signal judgment interval where the second average value is located, dividing red sub-pixels in the block into a plurality of periods by taking 2n adjacent red sub-pixels as a group, respectively determining 2 red sub-pixels as first adjustment mode sub-pixels and other red sub-pixels in the period as second adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit;

The invention provides a driving method of a display panel, wherein the display panel comprises a plurality of pixels; the display panel divides the pixels into a plurality of blocks according to physical position adjacency; each of the pixels includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the pixels comprise a first to-be-determined sub-pixel and a second to-be-determined sub-pixel, the first to-be-determined sub-pixel is all green sub-pixels in a corresponding block, and the second to-be-determined sub-pixel is all red sub-pixels in the corresponding block; the driving method includes the steps of:

dividing sub-pixel signals corresponding to green sub-pixels into i signal judgment intervals in sequence according to the gray scale, and simultaneously dividing sub-pixel signals corresponding to red sub-pixels into j signal judgment intervals in sequence according to the gray scale; the value of i is a natural number which is more than or equal to 2 and is less than or equal to the maximum gray scale level of the display panel; j is a natural number more than or equal to 2 and less than or equal to the maximum gray scale level of the display panel;

calculating a first average value of sub-pixel signals corresponding to all green sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the first average value is positioned; when the signal judgment interval in which the first average value is positioned is the first signal judgment interval or the ith signal judgment interval, determining all green sub-pixels of the current block as first adjustment mode sub-pixels; when the signal judgment interval in which the first average value is positioned is a first signal judgment interval and a signal judgment interval outside the ith signal judgment interval, dividing green sub-pixels in a block into a plurality of periods by taking 2n adjacent green sub-pixels as a group, respectively determining 2 corresponding adjacent green sub-pixels as first adjustment mode sub-pixels and simultaneously determining the rest green sub-pixels as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

calculating a second average value of sub-pixel signals corresponding to all red sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the second average value is positioned; when the signal judgment interval in which the second average value is positioned is the first signal judgment interval or the jth signal judgment interval, determining all red sub-pixels of the current block as first adjustment mode sub-pixels; when the signal judgment interval where the second average value is located is a signal judgment interval outside a first signal judgment interval and a jth signal judgment interval, dividing red sub-pixels in a block into a plurality of periods by taking 2n adjacent red sub-pixels as a group, respectively determining 2 red sub-pixels as first adjustment mode sub-pixels and simultaneously determining the rest red sub-pixels as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

determining all the blue sub-pixels as first adjustment mode sub-pixels;

after averaging the gray-scale values corresponding to the original sub-pixel signals corresponding to each sub-pixel group to be determined corresponding to the sub-pixels in the first adjustment mode, finding corresponding sub-pixel high-voltage signals and sub-pixel low-voltage signals according to the average values and a preset lookup table, and driving the first sub-pixels and the second sub-pixels corresponding to the sub-pixels in the first adjustment mode; original sub-pixel signals corresponding to a first sub-pixel and a second sub-pixel in each sub-pixel group to be judged corresponding to the sub-pixel in the second adjustment mode are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode;

the average gray scale of the sub-pixel high-voltage signal and the sub-pixel low-voltage signal corresponding to each sub-pixel group to be determined is equivalent to the average gray scale of the two corresponding original sub-pixel signals; the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is larger than the gray scale difference between the two corresponding original sub-pixel signals;

n is a natural number more than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be judged; meanwhile, the larger the gray scale difference between the sub-pixel high-voltage signal and the sub-pixel low-voltage signal corresponding to the sub-pixel to be determined in the signal determination section where the average value is located is, the larger the value of 2n is.

The invention provides a driving system of a display panel, wherein the display panel comprises a plurality of pixels, each pixel comprises a sub-pixel to be judged, and the sub-pixel to be judged comprises a main sub-pixel and a secondary sub-pixel; the drive system includes: the interval division module is used for dividing the sub-pixel signals corresponding to the sub-pixels to be judged into a plurality of signal judgment intervals in advance; the judgment processing module is used for calculating the average value of the sub-pixel signals corresponding to all the sub-pixels to be judged; the judgment processing module compares and judges a signal judgment interval in which the average value is positioned; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit; the driving module is used for driving a first sub-pixel and a second sub-pixel corresponding to the sub-pixel in the first adjustment mode in a first adjustment mode, and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode in a second adjustment mode; wherein n is a natural number greater than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be determined.

The color shift is improved with respect to a scheme of dividing each sub-pixel (e.g., red, green, and blue sub-pixels) into main and sub-pixels and connecting a discharge switch and a discharge capacitor to the sub-pixels. The method can realize brightness presentation by using two adjacent same-color sub-pixel signals, specifically, an average value of sub-pixel signals corresponding to the sub-pixel to be judged and a signal judgment interval where the average value is located are calculated firstly, the color cast degree and the granular sensation degree represented by each signal judgment interval are different, and according to a judgment result, if the granular sensation of a current picture is too serious, an adjustment mode with smaller gray scale difference can be selected to drive the sub-pixel to be judged; if the graininess is not particularly obvious, attention should be paid to the improvement of color cast, and the sub-pixel to be determined can be driven by an adjustment mode with larger gray scale difference so as to improve the display effect of the picture.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a first schematic diagram of a pixel being divided into primary/secondary pixels according to an embodiment of the invention;

FIG. 2 is a second schematic diagram of the pixel being divided into primary/secondary pixels according to one embodiment of the invention;

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

FIG. 4 is a flowchart of a driving method of a display panel according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a pixel arrangement of a display panel according to an embodiment of the invention;

FIG. 6 is a diagram illustrating pixel signal driving of a display panel according to an embodiment of the invention;

FIG. 7 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;

fig. 8 is a schematic diagram of a driving system of a display panel according to an embodiment of the invention.

100, a driving system; 10. an interval division module; 20. a judgment processing module; 30. and a driving module.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

An exemplary solution is to subdivide each Sub-pixel of RGB (Red, Green, Blue) into primary/secondary pixels (Main/Sub) so that the overall large-view luminance is closer to the front view with voltage variation.

Fig. 1 is a first schematic diagram of a pixel divided into primary/secondary pixels, and fig. 2 is a second schematic diagram of a pixel divided into primary/secondary pixels, as can be seen with reference to fig. 1 and 2, wherein the x-coordinate, the y-coordinate, and the z-coordinate respectively represent three directions of a three-dimensional space; the thetaa represents the pretilt angle at which the main pixel has a large voltage, and the thetab represents the pretilt angle at which the sub pixel has a small voltage.

Specifically, the original signal is divided into a primary pixel and a secondary pixel with large voltage and small voltage, the front-view large voltage and the small voltage are added to maintain the change of the original front-view signal along with the brightness, the side-view brightness seen by the large voltage changes along with the gray scale as PartA in fig. 1, and the side-view brightness seen by the small voltage changes along with the gray scale as PartB in fig. 1. Therefore, the brightness of the side view synthesis is changed from the arc line segments of the two dotted lines to the arc line segments of the solid line along with the change of the gray scale, so that the change relation of the brightness of the view angle along with the signal is close to that of the brightness of the front view original signal along with the change of the signal, and the view angle is improved.

The defect of color deviation of a viewing angle is solved by applying different driving voltages to the main pixel and the sub-pixel in space, so that the design of the pixel usually needs to design a metal wire or a Thin Film Transistor (TFT) element to drive the sub-pixel, the light-permeable opening area is sacrificed, the panel transmittance is influenced, and the backlight cost is directly improved.

The invention is described in detail below with reference to the figures and alternative embodiments.

Fig. 3 is a flowchart of a driving method of a display panel according to the present invention, fig. 4 is a flowchart of a driving method of another display panel according to the present invention, and it can be known from fig. 3 and fig. 4 that:

the invention provides a driving method of a display panel, wherein the display panel comprises a plurality of pixels, and each pixel comprises a plurality of different-color sub-pixels; at least one of the sub-pixels is a sub-pixel to be judged, two adjacent sub-pixels to be judged with the same color are used as a sub-pixel group to be judged, and each sub-pixel group to be judged comprises a first sub-pixel and a second sub-pixel;

the driving method includes the steps of:

s11, dividing the sub-pixel signal corresponding to the sub-pixel to be judged into a plurality of signal judgment intervals in advance;

s12, calculating the average value of the sub-pixel signals corresponding to all the sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit;

s13, driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the first adjustment mode, and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode;

With respect to fig. 1 and 2, a scheme of improving color shift by dividing each sub-pixel (e.g., red, green, and blue sub-pixels) into main and sub-pixels and connecting a discharge switch and a discharge capacitor to the sub-pixels. The method can realize brightness presentation by using two adjacent same-color sub-pixel signals, specifically, an average value of sub-pixel signals corresponding to the sub-pixel to be judged and a signal judgment interval where the average value is located are calculated firstly, the color cast degree and the granular sensation degree represented by each signal judgment interval are different, and according to a judgment result, if the granular sensation of a current picture is too serious, an adjustment mode with smaller gray scale difference can be selected to drive the sub-pixel to be judged; if the graininess is not particularly obvious, attention should be paid to the improvement of color cast, and the sub-pixel to be determined can be driven by an adjustment mode with larger gray scale difference so as to improve the display effect of the picture.

In addition, the structure of the pixel is not changed, so that the driving method of the invention does not reduce the aperture opening ratio, is beneficial to reducing the power consumption, and can improve the color cast and the granular sensation on the basis of not reducing the aperture opening ratio.

The average gray scale, i.e. the gray scale value of the sub-pixel signal corresponding to the first sub-pixel, is equal to the average value of the gray scale values of the sub-pixel signal corresponding to the second sub-pixel, i.e. the average brightness of the first sub-pixel and the second sub-pixel is equivalent in the first adjustment mode and the second adjustment mode. The average gray levels are equivalent, that is, the average gray levels of the first sub-pixel and the second sub-pixel are the same in the first adjustment mode and the second adjustment mode, and certainly, the average gray levels of the first sub-pixel and the second sub-pixel are not completely consistent in the first adjustment mode and the second adjustment mode, but the difference between the average gray levels is smaller than a preset range, for example, when the error is smaller than 0.5 gray level, the two average gray levels can be considered to be equivalent in size.

The adjacent means that the sub-pixels of the same color are adjacent to each other at the positions along the scan line or along the data line in the display panel, for example, in fig. 5, the R1,1 and R2,1 are adjacent to each other along the data line, and of course, the display panel has different architectures and can also be adjacent to each other along the scan line; similarly, 2n adjacent subpixels to be determined in the same color are in one period, and when a red subpixel is a subpixel signal to be determined, for example, 2, 4, and 6 … adjacent red subpixels are in one period, the red subpixel is divided into a plurality of periods, where a value of n may be determined according to a signal determination interval in which an average value is located, and when a gray scale difference between a corresponding subpixel high voltage signal and a subpixel low voltage signal of the subpixel to be determined in the signal determination interval in which the average value is located is larger, the value of n is larger; of course, the value of n can also be modified according to the preset value.

The judgment condition of the present invention may vary with different design requirements of the display panel, and an embodiment is specifically illustrated to better explain the solution of the present invention, wherein the corresponding relationship of the lookup table related to the embodiment is merely an example for easy understanding, and does not form a limitation to the present invention, and as long as the technical solution of the present invention is met, the protection scope of the present invention should be included, and the specific lookup table is as follows:

as shown in table 1, the average value Rave of the sub-pixel signals of the red sub-pixel, the corresponding first sub-pixel signal and the corresponding second sub-pixel signal, and the sub-pixel high voltage signal RH and the sub-pixel low voltage signal RL correspond to each other as follows (the unit in the table is gray scale):

table 1 red subpixel lookup table

As shown in table 2, the green sub-pixel, the average value Gave of the sub-pixel signals of the corresponding first sub-pixel and second sub-pixel signals, and the sub-pixel high voltage signal GH and the sub-pixel low voltage signal GL are corresponding as follows (the unit in the table is gray scale):

TABLE 2 Green subpixel lookup

Of course, the lookup table shown above is only an exemplary lookup table to illustrate the present invention more clearly, but not to represent that the lookup table of the present invention can only use the above lookup table; taking Rave equal to 50 as an example, in the first driving mode, the gray levels of the sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel may be 100 and 3, or 90 and 13, depending on the actual requirement.

Referring to tables 1 and 2, if the gray scale difference between RH and RL corresponding to the red subpixel is slightly larger than the gray scale difference between GH and GL corresponding to the green subpixel, then only the red subpixel may be set as the subpixel to be determined, and certainly, if the gray scale difference between the green subpixels set on other panels is larger, the green subpixel may also be set as the subpixel to be determined. Of course, it is also possible to set the red sub-pixel and the green sub-pixel as the sub-pixels to be determined at the same time.

In an embodiment, the first adjustment manner is to average gray-scale values corresponding to original sub-pixel signals corresponding to a first sub-pixel and a second sub-pixel in each sub-pixel group to be determined, and then find corresponding sub-pixel high-voltage signals and sub-pixel low-voltage signals according to the average values and a preset lookup table, so as to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined; the second adjustment mode is to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined without processing the original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined.

In the embodiment, under the first adjustment mode, the sub-pixel high-voltage signal and the sub-pixel low-voltage signal are used for realizing the display of one brightness, so that the problem of color cast can be better solved; in the second adjustment mode, the gray scale difference of the original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel is smaller, so that the granular sensation can be obviously improved; different adjustment modes are selected according to different conditions to drive the sub-pixels to be judged, and the display effect can be effectively improved.

Specifically, for 8-bit (bit) display driving, the driving signals of the sub-pixels are 0,1, … 255, for example, a red sub-pixel, the original sub-pixel signals corresponding to two adjacent independent sub-pixels are R1 and R2, the two sub-pixel signals are gray scale signals of 0,1, … 255 5, and the sub-pixel high voltage signal RH and the sub-pixel low voltage signal RL obtained by table lookup according to the average signal Rave of two adjacent same-color sub-pixels of R1 and R2 are also gray scale signals of 0,1, … 255. The average gray levels of the RH and RL are equivalent to the average gray levels of the R1 and R2, namely, under the two adjustment modes, the average value of the brightness is equivalent to the average value of the brightness, but the gray level difference or the voltage difference of the RH and RL is larger than R1 and R2. Therefore, after the color cast and the graininess degree of the current picture are judged, the corresponding sub-pixel to be judged can be driven by selecting the first adjusting mode or the second adjusting mode.

Because different display panels can correspond to the same average value and set different sub-pixel high-voltage signals and sub-pixel low-voltage signals, the signal judgment interval of the invention is variable; specifically, when the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal corresponding to the signal judgment section is greater than 50, or the brightness difference is greater than 50 nit, the driving is performed in a second adjustment mode; and if the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal corresponding to the signal judgment section is less than or equal to 50, or the brightness difference is less than or equal to 50 nits, driving in a first adjustment mode.

In an embodiment, in the step of dividing the sub-pixel to be determined into a plurality of periods with 2n adjacent sub-pixels to be determined of the same color as a period according to the signal determination interval where the average value is located, and determining the first adjustment mode sub-pixel and the second adjustment mode sub-pixel in each period with the sub-pixel group to be determined as a unit: dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a period according to the signal judgment interval; respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels and other sub-pixels to be determined in the period as second adjustment mode sub-pixels in each period by taking the sub-pixel group to be determined as a unit; wherein m is a natural number more than or equal to 1, and the value of 2m is less than or equal to 2 n.

In the embodiment, according to the determination result, if the graininess of the current picture is too serious, a small part of sub-pixels to be determined in the period can be determined as the sub-pixels of the first adjustment mode, and the adjustment mode with smaller gray scale difference is selected to drive the sub-pixels of the second adjustment mode, so that the graininess is mainly improved; if the graininess is not particularly obvious, attention should be paid to the improvement of color cast, most of the sub-pixels to be determined in the period can be determined as the sub-pixels in the first adjustment mode, and the sub-pixels in the first adjustment mode are driven by the adjustment mode with larger gray scale difference, so as to mainly improve the color cast, improve the graininess and improve the display effect of the picture.

When 2m sub-pixels to be determined are selected as the first adjustment sub-pixels or the second adjustment sub-pixels, the sub-pixels with larger gray scale corresponding to the first sub-pixels and the second sub-pixels are preferentially determined as the first adjustment sub-pixels, and the sub-pixels with smaller gray scale corresponding to the first sub-pixels and the second sub-pixels are preferentially determined as the second adjustment sub-pixels.

In an embodiment, the sub-pixels to be determined are divided into a plurality of periods by taking 2n adjacent sub-pixels to be determined of the same color as a period according to the signal determination interval; the method comprises the following steps of respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels in each period by taking a sub-pixel group to be determined as a unit, and determining other sub-pixels to be determined in the period as second adjustment mode sub-pixels:

In this embodiment, according to the determination result, if the graininess of the current frame is too serious, the period may be set to be larger, for example, 8 to-be-determined sub-pixels are in one period, 2 to-be-determined sub-pixels are determined as the first adjustment mode sub-pixels in each period, and the second adjustment mode sub-pixels are driven by the adjustment mode with smaller gray scale difference, so that the graininess is mainly improved, and the color cast is improved; if the graininess is not particularly obvious, then attention should be paid to the improvement of the color cast, the period may be set to be small, for example, 4 or 2 to-be-determined sub-pixels are one period, 2 to-be-determined sub-pixels are determined in the period to be determined as the first adjustment mode sub-pixels, and the adjustment mode with a large gray scale difference is selected to drive the first adjustment mode sub-pixels, so as to mainly improve the color cast and improve the graininess, so as to improve the display effect of the picture.

The selection mode of the 2 sub-pixels to be determined is based on the sub-pixel group to be determined, and the sub-pixels to be determined with weak granular sensation can be preferentially selected, or certainly, the sub-pixels to be determined can be randomly selected.

When the signal determination period in which the average value is located is the first signal determination period or the last signal determination period, 2n may be set to 2, that is, all the sub-pixels to be determined are set as the first adjustment mode sub-pixels, so as to mainly improve color shift. Correspondingly, when the signal judgment period in which the average value is located is the signal judgment period with larger gray scale difference, 2n can be set to 8 or even 16, and two first adjustment mode sub-pixels are determined from the signal judgment period, so that the granular sensation is mainly improved.

Wherein the 2n max can be set to the total number of sub-pixels to be determined.

In one embodiment, the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the sub-pixels to be judged comprise a first sub-pixel to be judged and a second sub-pixel to be judged, the first sub-pixel to be judged is all green sub-pixels, and the second sub-pixel to be judged is all red sub-pixels.

In the embodiment, because human eyes are sensitive to red and green, when the difference between two adjacent gray levels of the red sub-pixel and the green sub-pixel is large, the human eyes can easily feel granular sensation, so that the red sub-pixel and the green sub-pixel are used as the sub-pixels to be judged, and the adjustment modes are respectively judged and selected to purposefully improve color cast or granular sensation, thereby improving the display effect; specifically, an average value of the sub-pixel signals is calculated, the unit of the average value is a gray scale, taking a red sub-pixel as an example, referring to table 1, if the average value Rave is 50, the corresponding sub-pixel high voltage signal RH and sub-pixel low voltage signal RL are 100 and 3 respectively, and the graininess is severe, at this time, a second adjustment method is applied to drive the red sub-pixel to improve the graininess. Similarly, if the average value Rave is 5, the corresponding RH and RL gray levels are 15 and 0, respectively, and the gray level difference is small, so that no obvious graininess is generated, but the color shift can be improved, and therefore, in this case, the first adjustment method is selected to drive the first red sub-pixel and the second red sub-pixel.

The color shift of the blue color system is not very serious, so that the blue sub-pixel is not used as the sub-pixel to be judged, and the driving mode with smaller gray scale difference is used for driving by default to improve the granular sensation; of course, since the human eye is not very sensitive to blue, the graininess of the blue color system is not very serious, and thus the driving method with larger gray scale difference can be used as a default to improve the color shift. In addition, the red sub-pixel, the green sub-pixel and the blue sub-pixel may be set as the sub-pixels to be determined, but the blue sub-pixel is driven by the first adjustment method only when the gray scale difference between the corresponding sub-pixel high voltage signal and the corresponding sub-pixel low voltage signal is greater than 100 gray scales.

Fig. 5 is a schematic diagram of a pixel arrangement of a display panel of the invention, fig. 6 is a schematic diagram of a pixel signal driving of a display panel of the invention, and referring to fig. 5 and 6, it can be known from fig. 3 and 4 that:

in one embodiment, the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the sub-pixels to be judged are all red sub-pixels.

In this embodiment, referring to tables 1 and 2, the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal corresponding to the red sub-pixel is slightly larger than the green sub-pixel, so that the sub-pixel to be determined is set as the red sub-pixel; of course, the above tables 1 and 2 are only examples, and if the gray scale difference corresponding to the green sub-pixel is larger in some display panels, the sub-pixel to be determined may also be set as the green sub-pixel; in addition, only one of the sub-pixels is set as the sub-pixel to be determined, then the sub-pixels are driven in a first adjustment mode or a second adjustment mode according to the average value, for example, red, green and blue sub-pixels are taken as an example, the rest two sub-pixels do not execute the determination step, and the first adjustment mode is completely determined to improve the color cast. Of course, it is also possible to use the second adjustment method entirely.

Wherein, R1,1, G1,1 and B1,1 corresponding to the dotted frame shown in fig. 5 is a pixel unit; the n × m pixel units may be the number of pixels of the entire display panel, or the number of pixels of one block.

The virtual frame shown in fig. 6 corresponds to a group of corresponding first to-be-determined sub-pixels and second to-be-determined sub-pixels, and the physical positions of the two corresponding to-be-determined sub-pixels are adjacent to each other, so as to realize the presentation of an average gray scale. The blue sub-pixels can be driven by adopting an adjusting mode with large gray scale difference, namely, the blue sub-pixels are driven by adopting a first adjusting mode by default to improve color cast; it is of course also possible that the blue sub-pixels are all driven by default in the second adjustment manner to improve the graininess.

In one embodiment, the signal judgment section is sequentially divided into j signal judgment sections according to the gray scale of the sub-pixel signal of the sub-pixel to be judged, the signal gray scale corresponding to the first signal judgment section is the minimum, and the signal gray scale corresponding to the jth signal judgment section is the maximum; wherein j is a natural number greater than or equal to 2 and less than or equal to the maximum gray scale level of the display panel.

In this embodiment, the signal determination intervals are sequentially divided according to the signal gray scale of the sub-pixel signals, wherein, as can be seen from tables 1 and 2, when the signal determination intervals are close to the 0 gray scale and the 255 gray scale, the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is small, and the granular sensation is weak, at this time, the first adjustment mode should be preferentially used to drive the corresponding sub-pixel to be determined so as to improve the color shift; the granularity of the signal determination interval is obvious when the signal determination interval is close to the middle gray level, for example, when the signal determination interval is close to the 50 gray level, the second adjustment method should be preferentially selected to drive the corresponding sub-pixel to be determined so as to improve the granularity.

If j is 51, each signal judgment interval corresponds to five gray-scale values, 256 gray-scale values can be correspondingly divided into 51 signal judgment intervals, at this time, the first signal judgment interval can correspond to 6 gray-scale values in total from 0 to 5 gray-scale values, and so on, each signal judgment interval corresponds to 5 or 6 gray-scale values, so that the gray-scale differences of the sub-pixel high-voltage signal and the sub-pixel low-voltage signal corresponding to each signal judgment interval are different to reflect the color cast degree and the granular sensation degree, so that the corresponding sub-pixel to be judged is driven by selecting an applicable adjustment mode.

In one embodiment, the display panel divides pixels into a plurality of blocks according to physical position adjacency; calculating the average value of sub-pixel signals corresponding to all sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; according to the signal judgment interval where the average value is located, dividing the sub-pixel to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit:

s121, calculating a first average value of sub-pixel signals corresponding to all green sub-pixels in a corresponding block by taking the block as a unit;

s122, comparing and judging a signal judgment interval where the first average value is located; dividing green sub-pixels in the block into a plurality of periods by taking 2n adjacent green sub-pixels as a group according to a signal judgment interval where the first average value is located, respectively determining 2 green sub-pixels as first adjustment mode sub-pixels and other green sub-pixels in the period as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

s123, calculating a second average value of sub-pixel signals corresponding to all red sub-pixels in the corresponding block by taking the block as a unit;

s124, comparing and judging the signal judgment interval where the second average value is located; according to the signal judgment interval where the second average value is located, dividing red sub-pixels in the block into a plurality of periods by taking 2n adjacent red sub-pixels as a group, respectively determining 2 red sub-pixels as first adjustment mode sub-pixels and other red sub-pixels in the period as second adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit;

In this embodiment, the red sub-pixel and the green sub-pixel respectively perform the steps of determining and selecting the adjustment mode, so as to better follow the respective conditions of the red sub-pixel and the green sub-pixel to improve the color shift or the granular sensation.

The dividing of the pixels into blocks by physical adjacent positions means that a predetermined number of pixels are taken as a block in the direction of the data line and the scan line, for example, 10 pixels are taken in the direction of the data line, and 10 pixels are taken in the direction of the scan line, so that a block including 10 × 10 pixels is obtained, and the display panel can be divided into a plurality of blocks by the analogy.

Fig. 7 is a flowchart of a driving method of a display panel according to still another embodiment of the present invention, and referring to fig. 7, with reference to fig. 3 to 6, the present invention provides a driving method of a display panel, where the display panel includes a plurality of pixels; the display panel divides the pixels into a plurality of blocks according to physical position adjacency; each of the pixels includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the pixels comprise a first to-be-determined sub-pixel and a second to-be-determined sub-pixel, the first to-be-determined sub-pixel is all green sub-pixels in a corresponding block, and the second to-be-determined sub-pixel is all red sub-pixels in the corresponding block; the driving method includes the steps of:

s21, dividing the sub-pixel signal corresponding to the green sub-pixel into i signal judgment intervals according to the gray scale in advance, and simultaneously dividing the sub-pixel signal corresponding to the red sub-pixel into j signal judgment intervals according to the gray scale in advance; the value of i is a natural number which is more than or equal to 2 and is less than or equal to the maximum gray scale level of the display panel; j is a natural number more than or equal to 2 and less than or equal to the maximum gray scale level of the display panel;

s22, calculating a first average value of sub-pixel signals corresponding to all green sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the first average value is positioned;

s23, when the signal judgment interval where the first average value is located is the first signal judgment interval or the ith signal judgment interval, determining all green sub-pixels of the current block as first adjustment mode sub-pixels; when the signal judgment interval in which the first average value is positioned is a first signal judgment interval and a signal judgment interval outside the ith signal judgment interval, dividing green sub-pixels in a block into a plurality of periods by taking 2n adjacent green sub-pixels as a group, respectively determining 2 corresponding adjacent green sub-pixels as first adjustment mode sub-pixels and simultaneously determining the rest green sub-pixels as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

s24, calculating a second average value of sub-pixel signals corresponding to all red sub-pixels in the corresponding block by taking the block as a unit; comparing and judging a signal judgment interval in which the second average value is positioned;

s25, when the signal judgment interval where the second average value is located is the first signal judgment interval or the jth signal judgment interval, determining all red sub-pixels of the current block as first adjustment mode sub-pixels; when the signal judgment interval where the second average value is located is a signal judgment interval outside a first signal judgment interval and a jth signal judgment interval, dividing red sub-pixels in a block into a plurality of periods by taking 2n adjacent red sub-pixels as a group, respectively determining 2 red sub-pixels as first adjustment mode sub-pixels and simultaneously determining the rest red sub-pixels as second adjustment mode sub-pixels in each period by taking the to-be-judged sub-pixel group as a unit;

s26, determining all blue sub-pixels as first adjustment mode sub-pixels;

s27, after the gray-scale values corresponding to the original sub-pixel signals corresponding to each sub-pixel group to be judged corresponding to the sub-pixels with the first adjustment mode are averaged, the corresponding sub-pixel high-voltage signals and sub-pixel low-voltage signals are found according to the average values and a preset lookup table, and the sub-pixel high-voltage signals and the sub-pixel low-voltage signals are used for driving the first sub-pixels and the second sub-pixels corresponding to the sub-pixels with the first adjustment mode; original sub-pixel signals corresponding to a first sub-pixel and a second sub-pixel in each sub-pixel group to be judged corresponding to the sub-pixel in the second adjustment mode are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode;

In this embodiment, on the premise of no conflict, the above steps may be executed synchronously or sequentially. The first adjustment mode is selected when the first average value is in the first signal judgment interval or the ith signal judgment interval, and the second adjustment mode is selected when the first average value is in the first signal judgment interval or the ith signal judgment interval. But is only one of these options and is not intended to represent the only option that the present invention can make. For example, the first adjustment mode may be selected when the first average value is in a signal determination interval in which the first average value is close to 50% of the first signal determination interval or the ith signal determination interval; and when the first average value is in the rest 50% of the signal judgment interval, selecting a second adjustment mode. Likewise, the second average value is the same.

Even other division modes can be adopted, but the signal judgment section corresponding to the first average value or the second average value, wherein at least the signal judgment section with the largest gray scale difference needs to adopt the second adjustment mode to drive the corresponding sub-pixel to be judged. Meanwhile, at least the signal judgment section with the minimum gray scale difference needs to be driven by a first adjustment mode.

The maximum values of i and j depend on the gray scale division of the image, for example, if the brightness of the display device is divided into 128 levels, the maximum gray scale level is 128, and the maximum value of the corresponding i is 128; when the gray scale level is divided into 512 levels, the maximum gray scale level is 512, and the corresponding maximum value of i is 512; similarly, other gray scale division schemes are possible.

Fig. 8 is a schematic diagram of a driving system of a display panel according to the present invention, and referring to fig. 8, the present invention provides a driving system of a display panel, where the display panel includes a plurality of pixels, each of the pixels includes a sub-pixel to be determined, and the sub-pixel to be determined includes a main sub-pixel and a sub-pixel; the drive system 100 includes: a section dividing module 10, namely a section dividing circuit, for dividing the sub-pixel signal corresponding to the sub-pixel to be determined into a plurality of signal determination sections in advance; an average value judgment processing module 20, namely a judgment processing circuit, for calculating the sub-pixel signals corresponding to all the sub-pixels to be judged; the judgment processing module 20 compares and judges the signal judgment interval where the average value is located; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit; a driving module 30, i.e. a driving circuit, for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the first adjustment mode, and driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel in the second adjustment mode; wherein n is a natural number greater than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be determined.

It should be noted that, the limitations of the steps involved in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all should be considered to belong to the protection scope of the present disclosure.

The technical scheme of the invention can be combined and applied on the premise of no conflict.

The technical solution of the present invention can be widely applied to various display panels, such as a Twisted Nematic (TN) display panel, an In-Plane Switching (IPS) display panel, a Vertical Alignment (VA) display panel, and a Multi-Domain Vertical Alignment (MVA) display panel, and of course, other types of display panels, such as an Organic Light-Emitting Diode (OLED) display panel, can be applied to the above solution.

The foregoing is a more detailed description of the invention in connection with specific alternative embodiments, and the practice of the invention should not be construed as limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A driving method of a display panel, wherein the display panel comprises a plurality of pixels, each of the pixels comprises a plurality of sub-pixels with different colors; at least one of the sub-pixels is a sub-pixel to be judged, two adjacent sub-pixels to be judged with the same color are used as a sub-pixel group to be judged, and each sub-pixel group to be judged comprises a first sub-pixel and a second sub-pixel;

the driving method includes the steps of:

under the first adjustment mode and the second adjustment mode, the average gray scales of sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel are equivalent, and the gray scale difference is different; n is a natural number more than or equal to 1, and the value of 2n is less than or equal to the total number of the sub-pixels to be judged;

the first adjustment mode is that after the gray-scale values corresponding to the original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined are averaged, the corresponding sub-pixel high-voltage signal and sub-pixel low-voltage signal are found according to the average value and a preset lookup table, and the first adjustment mode is used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined;

the second adjustment mode is that original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be judged are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be judged;

according to the signal judgment interval where the average value is located, dividing the sub-pixel to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit:

dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a period according to the signal judgment interval; respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels and other sub-pixels to be determined in the period as second adjustment mode sub-pixels in each period by taking the sub-pixel group to be determined as a unit;

wherein m is a natural number more than or equal to 1, and the value of 2m is less than or equal to 2 n;

2. The method of driving a display panel according to claim 1, wherein the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel;

the sub-pixels to be judged comprise a first sub-pixel to be judged and a second sub-pixel to be judged, the first sub-pixel to be judged is all green sub-pixels, and the second sub-pixel to be judged is all red sub-pixels.

3. The method of driving a display panel according to claim 1, wherein the pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel;

the sub-pixels to be judged are all red sub-pixels.

4. The method according to claim 1, wherein the signal judgment section is sequentially divided into j signal judgment sections according to the gray scale of the sub-pixel signal of the sub-pixel to be judged, the signal gray scale corresponding to the first signal judgment section is the smallest, and the signal gray scale corresponding to the jth signal judgment section is the largest;

wherein j is a natural number greater than or equal to 2 and less than or equal to the maximum gray scale level of the display panel.

5. The method according to claim 1, wherein the display panel divides the pixels into a plurality of blocks according to physical positions;

calculating the average value of sub-pixel signals corresponding to all sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; according to the signal judgment interval where the average value is located, dividing the sub-pixel to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit:

6. A driving method of a display panel, wherein the display panel includes a plurality of pixels; the display panel divides the pixels into a plurality of blocks according to physical position adjacency;

each of the pixels includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the pixels comprise a first to-be-determined sub-pixel and a second to-be-determined sub-pixel, the first to-be-determined sub-pixel is all green sub-pixels in a corresponding block, and the second to-be-determined sub-pixel is all red sub-pixels in the corresponding block;

the driving method includes the steps of:

determining all the blue sub-pixels as first adjustment mode sub-pixels;

n is a natural number more than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be judged; meanwhile, the larger the gray scale difference between the sub-pixel high-voltage signal and the sub-pixel low-voltage signal corresponding to the sub-pixel to be determined in the signal determination interval in which the average value is located is, the larger the value of 2n is;

dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as a period according to the signal judgment interval; the method comprises the following steps of respectively determining 2m sub-pixels to be determined as first adjustment mode sub-pixels in each period by taking a sub-pixel group to be determined as a unit, and determining other sub-pixels to be determined in the period as second adjustment mode sub-pixels:

7. A driving system of a display panel is characterized in that the display panel comprises a plurality of pixels, each pixel comprises sub-pixels to be judged, at least one of the sub-pixels is a sub-pixel to be judged, two adjacent sub-pixels to be judged with the same color are used as a sub-pixel group to be judged, and each sub-pixel group to be judged comprises a first sub-pixel and a second sub-pixel;

the drive system includes:

the interval dividing module is used for dividing the sub-pixel signals corresponding to the sub-pixels to be judged into a plurality of signal judging intervals in advance;

the judgment processing module is used for calculating the average value of the sub-pixel signals corresponding to all the sub-pixels to be judged; comparing and judging a signal judgment interval in which the average value is positioned; dividing the sub-pixels to be judged into a plurality of periods by taking 2n adjacent sub-pixels to be judged with the same color as one period according to the signal judgment interval where the average value is located, and respectively determining a first adjustment mode sub-pixel and a second adjustment mode sub-pixel in each period by taking the sub-pixel group to be judged as a unit;

the larger the gray scale difference between the corresponding sub-pixel high-voltage signal and the corresponding sub-pixel low-voltage signal of the sub-pixel to be determined in the signal determination interval in which the average value is located is, the larger the value of 2n is;

and

the driving module drives a first sub-pixel and a second sub-pixel corresponding to the sub-pixel in the first adjustment mode in a first adjustment mode, and drives a first sub-pixel and a second sub-pixel corresponding to the sub-pixel in the second adjustment mode in a second adjustment mode;

under the first adjustment mode and the second adjustment mode, the average gray scales of sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel are equivalent, and the gray scale difference is different; n is a natural number more than or equal to 1, and the value of 2n is less than or equal to the total number of the corresponding sub-pixels to be judged;

the second adjustment mode is to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined without processing the original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined.