CN109637489B - Driving method and driving system of display panel - Google Patents
Driving method and driving system of display panel Download PDFInfo
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- CN109637489B CN109637489B CN201910089256.7A CN201910089256A CN109637489B CN 109637489 B CN109637489 B CN 109637489B CN 201910089256 A CN201910089256 A CN 201910089256A CN 109637489 B CN109637489 B CN 109637489B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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; counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals; respectively judging whether the corresponding preset standard proportion values are met, and searching a maximum proportion 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 one period according to the maximum proportion interval, 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
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 avoid serious granular sensation.
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;
according to the sub-pixel signals of all the sub-pixels to be judged, the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals is counted; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion 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 one period according to the maximum proportion interval, 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 which is more than or equal to 1, and the value of 2n is less than the total number of the sub-pixels to be judged.
Optionally, 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 maximum proportion interval, 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 includes: dividing all 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 maximum proportion interval, respectively determining 2m sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels; 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, the step of dividing all the sub-pixels to be determined into a plurality of periods by using 2n adjacent sub-pixels to be determined of the same color as a group according to the maximum proportion interval, determining 2m sub-pixels to be determined as first adjustment mode sub-pixels in each period by using the group of sub-pixels to be determined as a unit, and determining the remaining sub-pixels to be determined in the period as second adjustment mode sub-pixels includes:
dividing all 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 maximum proportion interval, respectively determining 2 sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels;
the larger the gray scale difference between the corresponding sub-pixel high-voltage signal and the sub-pixel low-voltage signal of the sub-pixel to be determined in the maximum proportion interval is, the larger the value of 2n is.
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, 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 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 display panel divides the pixels into a plurality of blocks according to physical positions; 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 maximum proportion interval, 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 determined as a unit comprises the following steps: and dividing the sub-pixel to be determined into a plurality of periods by taking each block as a unit and taking 2n adjacent sub-pixels to be determined with the same color as a period according to the maximum proportion interval, 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 determined as a unit.
Optionally, the signal judgment interval is sequentially divided into i 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 ith signal judgment interval is maximum; wherein, the value of i 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.
The invention also provides a driving method of the 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;
the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; 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;
counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals by taking the block as a unit according to the sub-pixel signals of all the green sub-pixels; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
dividing the green sub-pixels into a plurality of periods by taking 2n adjacent green sub-pixels as a group according to the maximum proportion interval, determining 2 green sub-pixels as first adjustment mode sub-pixels in each period by taking the green sub-pixel group as a unit, and simultaneously determining the rest green sub-pixels in the periods as second adjustment mode sub-pixels;
counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals by taking the block as a unit according to the sub-pixel signals of all the red sub-pixels; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
dividing the red sub-pixels into a plurality of periods by taking 2n adjacent red sub-pixels as a group according to the maximum proportion interval, determining 2 red sub-pixels as first adjustment mode sub-pixels in each period by taking the red sub-pixel group as a unit, and simultaneously determining the rest red sub-pixels in the periods as second adjustment mode sub-pixels;
determining all the blue sub-pixel signals as first adjustment mode sub-pixels;
in the first adjustment mode sub-pixels, 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 sub-pixels and the second adjustment mode sub-pixels are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined; in the second adjustment mode sub-pixels, original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined;
the high voltage signal and the low voltage signal of the sub-pixel corresponding to each sub-pixel group to be determined are equivalent to the average gray scale of the two corresponding original sub-pixels; the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is greater than the gray scale difference corresponding to the two original sub-pixels;
and n is a natural number greater than or equal to 1, the value of 2n is less than the total number of the sub-pixels to be determined, and 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 maximum proportion interval is, the larger the value of 2n is.
The invention also provides a driving system of the display panel, the display panel comprises a plurality of pixels, and each pixel 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 drive system includes: the interval division module divides sub-pixel signals corresponding to the sub-pixels to be judged into a plurality of signal judgment intervals in advance; the processing module is used for counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals according to the sub-pixel signals of all the sub-pixels to be judged; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion 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 one period according to the maximum proportion interval, 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 drives a first sub-pixel and a second sub-pixel corresponding to the sub-pixel in the first adjustment mode, and drives a first sub-pixel and a 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 the total number of the sub-pixels to be determined.
In the invention, compared with the scheme that each pixel is divided into the main pixel and the sub-pixel, and the sub-pixel is connected with the discharge switch and the discharge capacitor conveniently, the main pixel and the sub-pixel have different charging voltages to improve color cast. In the invention, sub-pixel signals corresponding to sub-pixels to be judged are received and counted, and the distribution condition of each signal interval is calculated; if the brightness difference of the sub-pixels to be judged corresponding to the maximum proportion interval is large and the granular sensation is obvious, the granular sensation of the current picture is relatively obvious, most of the sub-pixels to be judged can be determined in a period, and the improved granular sensation is driven in an adjusting mode with smaller gray scale difference; similarly, if the brightness difference of the sub-pixels to be determined corresponding to the maximum proportion interval is small and the graininess is not obvious, it indicates that the graininess of the current picture is not serious, and at this time, most of the sub-pixels to be determined should be determined in the period, and the adjustment mode with larger gray scale difference is selected to drive to improve the color cast.
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 an exemplary scheme for dividing a pixel into primary/secondary pixels;
FIG. 2 is a second schematic diagram of an exemplary scheme for dividing a pixel into primary/secondary pixels;
FIG. 3 is a flow chart of a driving method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pixel arrangement of a display panel according to an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating pixel signal driving of a display panel according to an embodiment of the invention;
FIG. 6 is a flow chart of a driving method according to another embodiment of the present invention;
fig. 7 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 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 illustrating an exemplary scheme for dividing a pixel into primary/secondary pixels, and fig. 2 is a second schematic diagram illustrating an exemplary scheme for dividing a pixel 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 will be further elucidated with reference to the drawings and alternative embodiments.
Fig. 3 is a flow chart of a driving method according to the present invention, and it can be known with reference to fig. 3 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, according to the sub-pixel signals of all the sub-pixels to be judged, the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals is counted; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
s13, 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 according to the maximum proportion interval, 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;
s14, 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;
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 which is more than or equal to 1, and the value of 2n is less than the total number of the sub-pixels to be judged.
In the present invention, as compared to fig. 1 and 2, the Main pixel and the Sub pixel have different charging voltages to improve color shift by dividing each pixel into Main and Sub pixels and connecting a discharging switch and a discharging capacitor to the Sub pixel for convenience. In the invention, sub-pixel signals corresponding to sub-pixels to be judged are received and counted, and the distribution condition of each signal interval is calculated; if the brightness difference of the sub-pixels to be judged corresponding to the maximum proportion interval is large and the granular sensation is obvious, the granular sensation of the current picture is relatively obvious, most of the sub-pixels to be judged can be determined in a period, and the improved granular sensation is driven in an adjusting mode with smaller gray scale difference; similarly, if the brightness difference of the sub-pixels to be determined corresponding to the maximum proportion interval is small and the graininess is not obvious, it indicates that the graininess of the current picture is not serious, and at this time, most of the sub-pixels to be determined should be determined in the period, and the adjustment mode with larger gray scale difference is selected to drive to improve the color cast. Wherein, most means at least over half the number of sub-pixels to be determined in a period.
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 preset standard proportion value is set to be hooked with the number of the divided signal judgment intervals, when the number of the signal judgment intervals is large, the preset standard proportion value is small, and when the number of the signal judgment intervals is small, the preset standard proportion value is large; for example, when the number of the signal determination sections is 3, the preset criterion proportion value of the three signal determination sections may be Gth 1-Gth 2-Gth 3-30%, and of course, the preset criterion proportion value may be set differently and adjusted according to actual conditions.
The preset standard proportion value can also be calculated according to the total number of the sub-pixels to be judged and the proportion to obtain a specific number, and the calculation amount can be saved by setting a number threshold value instead of calculating the proportion value in the actual statistics.
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.
Correspondingly, the 2m is set based on the signal judgment interval where the average value is located and the value of the 2n, for example, when the value of the 2n is 8, the value of the 2m can be 2, 4, 6 and 8, and the specific value is determined according to the signal judgment interval where the average value is located, for example, if the graininess of the current picture on the surface of the signal judgment interval where the average value is located is serious, the value of the 2m is a larger value; conversely, a smaller value is selected to focus on improving graininess or color shift.
The rule of 2m selection is to take the sub-pixel group to be determined as a unit, and the sub-pixel group to be determined with weak granular sensation can be preferentially selected, or of course, the sub-pixel group to be determined can be randomly selected.
In an embodiment, the step S13 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 maximum proportion interval, and determining the first adjustment mode sub-pixel and the second adjustment mode sub-pixel respectively in each period by taking the sub-pixel group to be determined as a unit includes:
dividing all 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 maximum proportion interval, respectively determining 2m sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels; 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, if the brightness difference of the sub-pixels to be determined corresponding to the maximum proportion interval is large and the granular sensation is obvious, the value of 2m is larger than 0 and smaller than n, so that most of the sub-pixels to be determined in the period are determined, and the improved granular sensation is driven in an adjusting mode with smaller gray scale difference; similarly, if the brightness difference of the sub-pixels to be determined corresponding to the maximum proportion interval is small and the graininess is not obvious, the graininess of the current picture is not serious, at the moment, the value of 2m is larger than n and smaller than or equal to 2n, so that most of the sub-pixels to be determined in the period are determined, and the adjustment mode with larger gray scale difference is selected for driving to improve the color cast.
In an embodiment, the step S13 of dividing all the sub-pixels to be determined into a plurality of periods by using 2n adjacent sub-pixels to be determined of the same color as a group according to the maximum proportion interval, and determining 2m sub-pixels to be determined as first adjustment sub-pixels in each period by using the group of sub-pixels to be determined as a unit, and determining the remaining sub-pixels to be determined in the period as second adjustment sub-pixels includes:
dividing all 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 maximum proportion interval, respectively determining 2 sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels;
the larger the gray scale difference between the corresponding sub-pixel high-voltage signal and the sub-pixel low-voltage signal of the sub-pixel to be determined in the maximum proportion interval is, the larger the value of 2n is. In this embodiment, each period is set to only determine 2 sub-pixels to be determined as the first adjustment mode sub-pixels, but the number of sub-pixels included in each period is set differently according to the difference of the maximum proportion intervals; if the maximum proportion interval is located in the interval with serious granular sensation, each period is set to contain more sub-pixels, such as 8 or 16, so that the number of the sub-pixels driven in the first adjustment mode can be reduced, and the granular sensation is improved; similarly, if the maximum proportion interval is located in the interval with less granular sensation, the number of sub-pixels included in each period can be set to be less, that is, for the whole display panel, most of the sub-pixel signals adopt an adjustment mode capable of improving color shift, so as to improve color shift. Wherein the 2n maximum can be set to be equal to the total number of the sub-pixels to be determined, and the minimum can be set to be 2, that is, the sub-pixels to be determined are all driven by the first adjustment mode. 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 weaker granular sensation can be preferentially selected, or certainly, the sub-pixels to be determined can be randomly selected.
The determination conditions of the present invention are not constant, but vary with different design requirements of the display panel, and an embodiment is specifically illustrated to better illustrate 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, 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 table
For 8-bit (bit) display driving, the sub-pixel signal corresponding to the sub-pixel is a 0,1, … 255 gray scale signal; in the first adjustment mode, taking the red sub-pixel as an example, the 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, and … 255, 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, and … 255. The average gray levels of the RH and RL are equivalent to the average gray levels of the R1 and R2, that is, the corresponding sub-pixels to be determined have equivalent brightness average values in the first adjustment mode and the second adjustment mode, but the voltage difference or gray level difference between the RH and RL is larger than R1 and R2. Therefore, after the degree of color shift and graininess of the current picture is judged, an applicable adjusting mode is selected to drive the corresponding sub-pixel to be judged so as to improve the color shift or graininess in a targeted manner.
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 94 and 7, depending on the actual requirement.
When 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 in the corresponding lookup table, only the red subpixel may be set as the subpixel to be determined, and certainly, if the gray scale difference of the green subpixel set by the other panels is larger, the subpixel to be determined may also be the green subpixel. 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 this embodiment, in the first adjustment mode, the sub-pixel high-voltage signal and the sub-pixel low-voltage signal are used to realize the display of one brightness, so that the color cast can be better improved; 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.
Fig. 4 is a schematic diagram of a pixel arrangement of a display panel of the invention, fig. 5 is a schematic diagram of a pixel signal driving of a display panel of the invention, and referring to fig. 4 and 5, it can be known from fig. 3 that: r1,1, G1,1 and B1,1 corresponding to the dotted frame shown in fig. 4 are 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. 5 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.
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 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 this embodiment, in the first adjustment mode, corresponding to the first sub-pixel and the second sub-pixel of the same sub-pixel group to be determined, the sub-pixel high-voltage signal and the sub-pixel low-voltage signal are used to realize the display of one brightness, so that the color cast can be better improved; 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, so that color cast or granular sensation can be improved in a targeted manner, and the display quality is improved.
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 can be set as the sub-pixels to be determined, but the blue sub-pixel is driven by the first adjustment mode only when the gray scale difference between the corresponding sub-pixel high voltage signal and the corresponding sub-pixel low voltage signal is larger than 100 gray scales.
In one embodiment, the display panel divides pixels into a plurality of blocks according to physical position adjacency; the step S13 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 maximum proportion interval, 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 includes: and dividing the sub-pixel to be determined into a plurality of periods by taking each block as a unit and taking 2n adjacent sub-pixels to be determined with the same color as a period according to the maximum proportion interval, 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 determined as a unit.
In one embodiment, the signal judgment section is sequentially divided into i 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 ith signal judgment section is the maximum; wherein, the value of i 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.
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.
In the embodiment, all pixels are divided into a plurality of blocks according to physical positions, each block is independent, and the red sub-pixels and the green sub-pixels in each block are respectively judged to select an applicable adjustment mode, so that color cast or granular sensation can be better selected and improved according to the actual display condition of the red sub-pixels or the green sub-pixels in the blocks, and the display effect is improved; in addition, the signal judgment interval is divided in sequence according to the signal gray scale of the sub-pixel signal, when the sub-pixel signal of the sub-pixel to be judged in the signal judgment interval is correspondingly close to the 0 gray scale or the 255 gray scale, the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is small, the grain sense of the picture is not obvious, at the moment, the corresponding sub-pixel to be judged is driven by adopting a first adjustment mode, and the operation can improve the color cast while avoiding the obvious grain sense; and the signal judgment interval is correspondingly close to the middle gray scale, for example, when the signal judgment interval is close to the 50 gray scale, the graininess of the picture is obvious, at this time, the second adjustment mode should be selected to drive the corresponding sub-pixel to be judged, and the graininess can be better improved by the operation.
Because different display panels can correspond to the same average value and different sub-pixel high-voltage signals and sub-pixel low-voltage signals are set, the judging steps of the invention are correspondingly adjusted according to different display panels; for reference, when 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 is greater than 50, or the brightness difference is greater than 50 nit, the granular sensation is preferentially improved, that is, the corresponding pixel is driven in a second adjustment mode; 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 nit, the color cast is preferentially improved, i.e. the corresponding pixel is driven by the first adjustment mode.
Fig. 6 is a flow chart of another driving method of the present invention, and referring to fig. 6, it can be known from fig. 3 to 5 that:
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; the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; 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 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;
s22, counting the ratio of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals according to the sub-pixel signals of all the green sub-pixels by taking the block as a unit; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
s23, dividing the green sub-pixels into a plurality of periods by taking 2n adjacent green sub-pixels as a group according to the maximum proportion interval, determining 2 green sub-pixels as first adjustment mode sub-pixels in each period by taking the green sub-pixel group as a unit, and simultaneously determining the rest green sub-pixels in the periods as second adjustment mode sub-pixels;
s24, counting the ratio of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals according to the sub-pixel signals of all the red sub-pixels by taking the block as a unit; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
s25, dividing the red sub-pixels into a plurality of periods by taking 2n adjacent red sub-pixels as a group according to the maximum proportion interval, determining 2 red sub-pixels as first adjustment mode sub-pixels in each period by taking the red sub-pixel group as a unit, and simultaneously determining the rest red sub-pixels in the periods as second adjustment mode sub-pixels;
s26, determining all the blue sub-pixel signals as the first adjustment mode sub-pixels;
s27, averaging 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 in the first adjustment mode sub-pixels, and then finding out the corresponding sub-pixel high-voltage signal and sub-pixel low-voltage signal according to the average value and a preset lookup table to drive the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined; in the second adjustment mode sub-pixels, original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined;
the high voltage signal and the low voltage signal of the sub-pixel corresponding to each sub-pixel group to be determined are equivalent to the average gray scale of the two corresponding original sub-pixels; the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is greater than the gray scale difference corresponding to the two original sub-pixels;
and n is a natural number greater than or equal to 1, the value of 2n is less than the total number of the sub-pixels to be determined, and 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 maximum proportion interval is, the larger the value of 2n is.
In this embodiment, the steps S21, S22, S23, S24, S25, S26, and S27 may be executed synchronously or sequentially. Of course, the determination conditions of the present invention are different according to the difference of the display panel, but at least the signal determination section with the largest gray scale difference needs to select the second adjustment method to drive the corresponding sub-pixel to be determined. 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. 7 is a schematic diagram of a driving system of a display panel according to the present invention, and it can be known from fig. 7 that:
the invention also provides a driving system 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 drive system 100 includes: a section dividing module 10, namely a section dividing circuit, which divides the sub-pixel signal corresponding to the sub-pixel to be judged into a plurality of signal judging sections in advance;
the processing module 20, namely a processing circuit, is used for counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals according to the sub-pixel signals of all the sub-pixels to be judged; the processing module 20 respectively judges whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets a corresponding preset standard proportion value, and searches an interval with the maximum proportion in the intervals meeting the preset standard proportion value as a maximum proportion 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 one period according to the maximum proportion interval, 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 the total number of the 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 (9)
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:
dividing sub-pixel signals corresponding to sub-pixels to be judged into a plurality of signal judgment intervals in advance;
according to the sub-pixel signals of all the sub-pixels to be judged, the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals is counted; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion 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 one period according to the maximum proportion interval, 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 which is more than or equal to 1, and the value of 2n is less than the total number of the sub-pixels to be judged;
the signal judgment interval is divided into i signal judgment intervals in sequence 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 ith signal judgment interval is maximum;
wherein, the value of i 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.
2. The method according to claim 1, wherein 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 one period according to the maximum proportion section, and determining the first adjustment mode sub-pixel and the second adjustment mode sub-pixel respectively for each period by taking the sub-pixel group to be determined as a unit comprises:
dividing all 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 maximum proportion interval, respectively determining 2m sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels;
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.
3. The method according to claim 2, wherein the step of dividing all the sub-pixels to be determined into a plurality of periods by grouping 2n adjacent sub-pixels to be determined of the same color according to the maximum proportion section, and determining 2m sub-pixels to be determined as the first adjustment sub-pixels and the rest of the sub-pixels to be determined in the period as the second adjustment sub-pixels in each period by taking the group of sub-pixels to be determined as a unit comprises:
dividing all 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 maximum proportion interval, respectively determining 2 sub-pixels to be judged as first adjustment mode sub-pixels in each period by taking the sub-pixel group to be judged as a unit, and simultaneously determining the rest sub-pixels to be judged in the period as second adjustment mode sub-pixels;
the larger the gray scale difference between the corresponding sub-pixel high-voltage signal and the sub-pixel low-voltage signal of the sub-pixel to be determined in the maximum proportion interval is, the larger the value of 2n is.
4. The method according to claim 1, wherein the first adjustment manner is to average gray-scale values corresponding to original sub-pixel signals corresponding to the first sub-pixel and the 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.
5. 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.
6. 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.
7. The method according to claim 1, wherein the display panel divides the pixels into a plurality of blocks according to physical positions;
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 maximum proportion interval, 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 determined as a unit comprises the following steps:
and dividing the sub-pixel to be determined into a plurality of periods by taking each block as a unit and taking 2n adjacent sub-pixels to be determined with the same color as a period according to the maximum proportion interval, 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 determined as a unit.
8. 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;
the pixels comprise red sub-pixels, green sub-pixels and blue sub-pixels; 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;
counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals by taking the block as a unit according to the sub-pixel signals of all the green sub-pixels; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
dividing the green sub-pixels into a plurality of periods by taking 2n adjacent green sub-pixels as a group according to the maximum proportion interval, determining 2 green sub-pixels as first adjustment mode sub-pixels in each period by taking the green sub-pixel group as a unit, and simultaneously determining the rest green sub-pixels in the periods as second adjustment mode sub-pixels;
counting the proportion of the number of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals by taking the block as a unit according to the sub-pixel signals of all the red sub-pixels; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion interval;
dividing the green sub-pixels into a plurality of periods by taking 2n adjacent red sub-pixels as a group according to the maximum proportion interval, determining 2 red sub-pixels as first adjustment mode sub-pixels in each period by taking the red sub-pixel group as a unit, and simultaneously determining the rest red sub-pixels in the periods as second adjustment mode sub-pixels;
determining all the blue sub-pixel signals as first adjustment mode sub-pixels;
in the first adjustment mode sub-pixels, 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 sub-pixels and the second adjustment mode sub-pixels are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined; in the second adjustment mode sub-pixels, original sub-pixel signals corresponding to the first sub-pixel and the second sub-pixel in each sub-pixel group to be determined are not processed and are used for driving the first sub-pixel and the second sub-pixel corresponding to the sub-pixel to be determined;
the high voltage signal and the low voltage signal of the sub-pixel corresponding to each sub-pixel group to be determined are equivalent to the average gray scale of the two corresponding original sub-pixels; the gray scale difference between the sub-pixel high voltage signal and the sub-pixel low voltage signal is greater than the gray scale difference corresponding to the two original sub-pixels;
and n is a natural number greater than or equal to 1, the value of 2n is less than the total number of the sub-pixels to be determined, and 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 maximum proportion interval is, the larger the value of 2n is.
9. A driving system of a display panel, wherein the display panel comprises a plurality of pixels, each of the pixels comprising a plurality of differently colored 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 drive system includes:
the interval division module is used for dividing sub-pixel signals corresponding to the sub-pixels to be judged into a plurality of signal judgment intervals in advance;
the processing module is used for counting the proportion of the number of the sub-pixel signals in each signal judgment interval in the total number of the sub-pixel signals according to the sub-pixel signals of all the sub-pixels to be judged; respectively judging whether the proportion of the sub-pixel signals in each signal judgment interval to the total number of the sub-pixel signals meets the corresponding preset standard proportion value or not, and searching the interval with the maximum proportion in the intervals meeting the preset standard proportion value as the maximum proportion 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 one period according to the maximum proportion interval, 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 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;
wherein n is a natural number greater than or equal to 1, and the value of 2n is less than the total number of the sub-pixels to be judged;
the signal judgment interval is divided into i signal judgment intervals in sequence 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 ith signal judgment interval is maximum;
wherein, the value of i 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.
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