CN113504992A - Compensation data compression method, compensation device and compensation equipment of display panel - Google Patents

Compensation data compression method, compensation device and compensation equipment of display panel Download PDF

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CN113504992A
CN113504992A CN202110822846.3A CN202110822846A CN113504992A CN 113504992 A CN113504992 A CN 113504992A CN 202110822846 A CN202110822846 A CN 202110822846A CN 113504992 A CN113504992 A CN 113504992A
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compensation data
display panel
refresh rate
compensation
refresh
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CN113504992B (en
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王洪宇
韩冲
姜海斌
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G06F9/5055—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering software capabilities, i.e. software resources associated or available to the machine

Abstract

The application discloses a compensation data compression method, a compensation device and compensation equipment of a display panel. The method comprises the following steps: acquiring initial compensation data corresponding to each pixel unit of a display panel under various refresh rates; selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, wherein the refresh rates except the reference refresh rate in the plurality of refresh rates are non-reference refresh rates; calculating a difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein the initial compensation data corresponding to the reference refresh rate is the reference compensation data, and the initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data; and eliminating data which accord with a preset difference range in the first compensation data to obtain second compensation data, thereby obtaining compressed compensation data corresponding to the non-reference refresh rate. According to the embodiment of the application, the storage space occupied by the compensation data under various refresh rates can be reduced.

Description

Compensation data compression method, compensation device and compensation equipment of display panel
Technical Field
The present application relates to the field of display technologies, and in particular, to a compensation data compression method, compensation device, and compensation equipment for a display panel.
Background
The refresh rate is an important parameter for characterizing the stability of the displayed image of the display device. Current display devices can switch between different refresh rates. For example, when a user views text through a display device, the display device may operate at a relatively low refresh rate (e.g., 60 Hz)). As another example, when a user is watching an animation or playing a game versus combat through the display device, the display device may operate at a relatively high refresh rate (e.g., 144 Hz). In order to improve the display uniformity at each refresh rate, the compensation data corresponding to each refresh rate is usually stored, and a large storage space is required.
Disclosure of Invention
The embodiment of the application provides a compensation data compression method, a compensation device and compensation equipment of a display panel, which can reduce storage space occupied by compensation data under various refresh rates.
In a first aspect, an embodiment of the present application provides a compensation data compression method for a display panel, including: acquiring initial compensation data corresponding to each pixel unit of a display panel under various refresh rates; selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, wherein the refresh rates except the reference refresh rate in the plurality of refresh rates are non-reference refresh rates; calculating a difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein the initial compensation data corresponding to the reference refresh rate is the reference compensation data, and the initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data; and eliminating data which accord with a preset difference range in the first compensation data to obtain second compensation data, thereby obtaining compressed compensation data corresponding to the non-reference refresh rate.
In a possible implementation manner of the first aspect, selecting one refresh rate from the plurality of refresh rates as a reference refresh rate includes:
and selecting the refresh rate with the value of the refresh rate as the middle value from the plurality of refresh rates as the reference refresh rate.
In a possible implementation manner of the first aspect, calculating a difference between the non-reference compensation data and the reference compensation data to obtain the first compensation data includes:
calculating a difference between the non-reference compensation data and the reference compensation data;
and rounding the difference value to obtain first compensation data.
In a possible implementation manner of the first aspect, rounding the difference includes:
multiplying the difference by 10N1Wherein N1 is a positive integer, and N1 is capable of multiplying the smallest absolute value of the absolute values of the plurality of differences by 10N1And then an integer.
In a possible embodiment of the first aspect, the predetermined difference range is [ -a, + a ]]Wherein a is N2 x 10N3/2N3 is a positive integer and is an even number, N2 is a natural number;
preferably, the number of the first compensation data that meet the preset difference range in the first compensation data is greater than the number of the first compensation data that do not meet the preset difference range in the first compensation data.
In a possible implementation manner of the first aspect, the reference compensation data, the non-reference compensation data, the first compensation data and the second compensation data are all represented in a matrix form;
the position of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data corresponds to the position of each pixel unit in the display panel one by one;
excluding the first compensation data meeting the preset difference range from the first compensation data to obtain second compensation data, including:
and setting the first compensation data which accord with the preset difference range as 0, and keeping the first compensation data which do not accord with the preset difference range unchanged to obtain second compensation data, wherein the position of each element in the matrix of the second compensation data corresponds to the position of each pixel unit in the display panel one by one.
In a possible implementation manner of the first aspect, after obtaining the second compensation data, the method further includes:
constructing a row value sequence and a column value index sequence of non-0 elements in the matrix of the second compensation data, wherein the row value sequence comprises column positions of the non-0 elements and numerical values of the non-0 elements in the matrix of the second compensation data, and the column value index sequence comprises the column position of the first non-0 element of each row in the matrix of the second compensation data;
and storing the reference compensation data, the row value sequence and the column value index sequence.
In a second aspect, an embodiment of the present application provides a compensation method for a display panel, in which compensation data of the compensation data compression method for a display panel according to any one of the embodiments of the first aspect is compensated for, the compensation method including:
acquiring reference compensation data and second compensation data corresponding to the reference refresh rate;
compensating the display panel by the reference compensation data when the display panel displays at the reference refresh rate;
and when the display panel displays at the non-reference refresh rate, compensating the display panel according to the second compensation data and the reference compensation data.
In a third aspect, an embodiment of the present application provides a compensation data compression apparatus for a display panel, including:
the data acquisition module is used for acquiring compensation data corresponding to each pixel unit of the display panel under various refresh rates;
the refresh rate selection module is used for selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, and the refresh rates except the reference refresh rate in the plurality of refresh rates are non-reference refresh rates;
the difference value calculation module is used for calculating the difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein the compensation data corresponding to the reference refresh rate is the reference compensation data, and the compensation data corresponding to the non-reference refresh rate is the non-reference compensation data;
and the difference value screening module is used for eliminating the first compensation data which accord with a preset difference value range in the first compensation data to obtain second compensation data, so that compressed compensation data corresponding to the non-reference refresh rate is obtained.
In a fourth aspect, an embodiment of the present application provides a compensation data processing apparatus for a display panel, including: a processor and a memory storing computer program instructions;
the processor implements the compensation data compression method for a display panel according to the first aspect when executing the computer program instructions, or implements the compensation method for a display panel according to the second aspect when executing the computer program instructions.
In a fifth aspect, the present application provides a computer storage medium having stored thereon computer program instructions, which when executed by a processor, implement the compensation data compression method for a display panel according to the first aspect, or implement the compensation method for a display panel according to the second aspect.
According to the compensation data compression method, the compensation device and the compensation equipment of the display panel, one of a plurality of refresh rates is selected as a reference refresh rate, unselected non-reference refresh rates are used as non-reference refresh rates, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain first compensation data, then data which accord with a preset difference value range in the first compensation data is eliminated to obtain second compensation data, and the eliminated data are reduced in the second compensation data relative to the non-reference compensation data corresponding to the non-reference refresh rates, so that the data volume of the second compensation data can be reduced relative to the non-reference compensation data, the storage space required by the compensation data corresponding to the non-reference refresh rates is reduced, and the cost is reduced; and the Mura compensation data under different refresh rates can be rapidly and effectively acquired by the display panel, so that the quality of a multi-refresh screen and the yield of products are improved.
Drawings
Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 is a flowchart illustrating a compensation data compression method for a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating initial compensation data provided by an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating reference compensation data provided by an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating non-reference compensation data provided by an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating first compensation data provided by an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating first compensation data provided in accordance with another embodiment of the present application;
FIG. 7 is a schematic structural diagram of a compensation data compression apparatus for a display panel according to an embodiment of the present application;
FIG. 8 is a flowchart illustrating a compensation method for a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram illustrating a hardware configuration of a compensation data processing apparatus of a display panel according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Current display panels can switch between different refresh rates. In the related art, the same set of compensation data can be shared by a plurality of refresh rates. For example, the display panel is compensated at a refresh rate of 60Hz to obtain compensation data corresponding to 60Hz, and then the display panel shares the compensation data corresponding to 60Hz when displaying at refresh rates of 144Hz, 120Hz, 90Hz, 60Hz, and the like. The inventor of the present application has found that although the storage space occupied by the compensation data can be saved by sharing the same set of compensation data with a plurality of refresh rates, the charging time of the storage capacitor in the pixel circuit of each sub-pixel of the display panel is different between different refresh rates, and it can be understood that the higher the refresh rate is, the shorter the charging time of the storage capacitor in the pixel circuit is. For example, when the display panel uses the compensation data at 60Hz to display at the refresh rate of 144Hz, the Mura that is not shown at 60Hz or the original Mura region becomes more serious, so that the Mura condition compensation at all refresh rates cannot be effectively covered by sharing the compensation data at a single refresh rate with a plurality of refresh rates.
If the display panel has the compensation data corresponding to each of the plurality of refresh rates, more storage space is required to store the compensation data corresponding to each of the plurality of refresh rates. For example, taking the resolution of the display panel as 2340 × 720, the bits as 8 bits, the 0-255 grays include 7 grays binding points, the refresh rate includes 60Hz, 90Hz, and 120Hz, and the refresh rates 60Hz, 90Hz, and 120Hz all have their respective compensation data, the storage space required to be occupied is about 746MB, where 746MB is ((3 × 2340 × 720 × 8/1024/1024) × 7 × 3), 3 represents the number of sub-pixels included in the pixel unit, 2340 × 720 represents the resolution, 8 represents bits, two 1024 represent KB and MB transitions, 7 represents the number of grays binding points, and 3 represents the number of refresh rates. So lead to the storage space of the storage module of display panel to need setting up bigger, be unfavorable for cost control, and if not carry out effective compression processing to these compensation data, the display panel also can't be fast effectual obtains Mura compensation data under the different refresh rates, and then reduces many refresh screen quality and product yield.
In order to solve the above problems, embodiments of a compensation data compression method, a compensation device, and a compensation apparatus for a display panel are provided, and embodiments of the compensation data compression method, the compensation device, and the compensation apparatus for a display panel will be described below with reference to the accompanying drawings.
As shown in fig. 1, the compensation data compression method for a display panel according to the embodiment of the present application includes steps 110 to 140.
Step 110, obtaining initial compensation data corresponding to each pixel unit of the display panel under a plurality of refresh rates.
And step 120, selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, wherein the refresh rates except the reference refresh rate in the plurality of refresh rates are non-reference refresh rates.
Step 130, calculating a difference between the non-reference compensation data and the reference compensation data to obtain first compensation data, where the initial compensation data corresponding to the reference refresh rate is the reference compensation data, and the initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data.
And 140, eliminating data which accord with a preset difference range in the first compensation data to obtain second compensation data, thereby obtaining compressed compensation data corresponding to the non-reference refresh rate.
According to the compensation data compression method of the display panel, one of the plurality of refresh rates is selected as a reference refresh rate, the non-selected non-reference refresh rate is used as a non-reference refresh rate, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain first compensation data, data which accord with a preset difference range in the first compensation data is eliminated to obtain second compensation data, and the eliminated data is reduced in the second compensation data relative to the non-reference compensation data corresponding to the non-reference refresh rate, so that the data quantity of the second compensation data can be reduced relative to the non-reference compensation data, the storage space required by the compensation data corresponding to the non-reference refresh rate is reduced, and the cost is reduced; and the Mura compensation data under different refresh rates can be rapidly and effectively acquired by the display panel, so that the quality of a multi-refresh screen and the yield of products are improved.
For example, the pixel units of the display panel may be distributed in an array. The set of initial compensation data corresponding to each pixel unit of the display panel under various refresh rates can be represented in a matrix form, and the position of each element in the matrix of the initial compensation data corresponds to the position of each pixel unit in the display panel in a one-to-one mode.
Each pixel unit may include sub-pixels of a plurality of colors. For example, each pixel unit may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The initial compensation data corresponding to the pixel unit comprises initial compensation data corresponding to sub-pixels of each color in the pixel unit.
Illustratively, the plurality of refresh rates may include all refresh rates supported by the display panel. For example, the plurality of refresh rates may include F1, F2, F3. The initial compensation data corresponding to the sub-pixel a in the pixel unit at any refresh rate may be stored in the manner shown in fig. 2. In fig. 2, the resolution of the display panel is 1080 × 2340, that is, 1080 pixel units are provided in the vertical direction and 2340 pixels are provided in the horizontal direction. Wherein Pixel01 represents the Pixel of row 1, column 1, Pixel1080 represents the Pixel unit of row 1, column 1080, a1-1 represents the initial compensation data corresponding to the sub-Pixel a in the Pixel unit of row 1, column 1, a2340-1080 represents the initial compensation data corresponding to the sub-Pixel a in the Pixel unit of row 2340, column 1080, and so on.
Illustratively, the a sub-pixel may be a sub-pixel of any one color in a pixel unit.
In some embodiments, before step 110, Mura compensation may be performed on the display panel, initial compensation data corresponding to each pixel unit of the display panel at a plurality of refresh rates may be determined, and the determined initial compensation data may be stored. The initial compensation data may be stored as shown in fig. 2.
For example, the display panel is an 8-bit display panel, that is, the display panel can display gray scales ranging from 0 to 255. In the process of determining the initial compensation data of the display panel, the initial compensation data corresponding to some designated gray scale binding points at each refresh rate can be determined first, and then the initial compensation data corresponding to gray scales other than the gray scale binding points can be determined by using a linear interpolation method. Specifically, the gray level binding points may include 32 gray levels, 64 gray levels, 96 gray levels, 128 gray levels, 160 gray levels, 192 gray levels, 224 gray levels, 255 gray levels, and the like.
For example, for any gray scale binding point at any refresh rate, the step of determining the initial compensation data corresponding to the gray scale binding point of the display panel may specifically include: setting an initial value of initial compensation data, and judging whether uneven display exists when the display panel displays a gray scale binding point picture; if the display unevenness exists, the initial value of the initial compensation data is adjusted until the display unevenness does not exist when the display panel displays the gray scale binding image under the numerical value of the adjusted initial compensation data, and the adjusted numerical value can be used as the initial compensation data finally corresponding to the gray scale binding.
For example, in the process of determining the initial compensation data corresponding to the gray scales other than the gray scale binding points by using the linear interpolation method, after the gray scale binding points are selected, the gray scale binding points may be sorted according to the descending order of the gray scale values corresponding to the gray scale binding points, the (n + 1) th gray scale binding point and the (n) th gray scale binding point are taken as examples, and the initial compensation data may include an initial Gain coefficient Gain and an initial offset, and the initial Gain coefficient corresponding to the gray scale g other than the gray scale binding points may be equal to
Figure BDA0003172593360000081
Wherein, Gainn+1Represents the initial Gain coefficient, Gain, corresponding to the (n + 1) th gray-scale binding pointnAnd the initial gain coefficient corresponding to the nth gray scale binding point is represented, the delta G represents the gray scale difference value between the (n + 1) th gray scale binding point and the nth gray scale binding point, the G represents a gray scale value between the (n + 1) th gray scale binding point and the nth gray scale binding point, and the n represents a gray scale value corresponding to the nth gray scale binding point. Similarly, gray level bindingThe initial offset amount in the initial compensation data corresponding to the gray scale g other than the dots may be equal to
Figure BDA0003172593360000082
Wherein the offsetn+1Represents the initial offset, corresponding to the (n + 1) th gray-scale binding pointnIndicating the initial offset corresponding to the nth gray scale binding point.
It is understood that, taking the example that the initial compensation data includes the initial Gain coefficient Gain and the initial offset amount offset, for example, when the gray level binding point is m, the compensated gray level value corresponding to the gray level binding point m of the display panel is Gain m + offset.
Of course, the initial compensation data may be the compensated gray-scale value b, and the compensated gray-scale value corresponding to the gray-scale tie point m of the display panel is equal to m + b. It is understood that b may be negative or positive.
The above-mentioned determination method of the initial compensation data and the specific form of the initial compensation data are only some examples and are not intended to limit the present application.
In addition, since the red, green and blue sub-pixels of the display panel have different light-emitting efficiencies, the red, green and blue sub-pixels may have different initial compensation data values at the same gray level binding point, and the sub-pixels at different positions of the same color may have different initial compensation data values at the same gray level binding point. The present application does not limit the specific numerical value of the initial compensation data corresponding to the sub-pixel at each position of each color.
In some optional embodiments, step 120 may specifically include: and selecting the refresh rate with the value of the refresh rate as the middle value from the plurality of refresh rates as the reference refresh rate. For the sake of convenience of distinction, the unselected refresh rate is referred to as a non-reference refresh rate in the present application, the initial compensation data corresponding to the reference refresh rate is referred to as reference compensation data, and the initial compensation data corresponding to the non-reference refresh rate is referred to as non-reference compensation data.
For example, the plurality of refresh rates may include F1, F2, F3, F1 < F2 < F3, or F1 > F2 > F3, and then refresh rate F2 may be selected as the reference refresh rate. The initial compensation data corresponding to the refresh rate F2 is the reference compensation data, and the initial compensation data corresponding to the non-reference refresh rates F1 and F3 is the non-reference compensation data.
In the application, the compressed second compensation data finally corresponding to the non-reference refresh rate is based on the reference refresh rate, in the actual display process of the display panel, the second compensation data needs to be decompressed, the compensation data actually corresponding to the non-reference refresh rate is obtained for compensation, and by selecting the middle refresh rate as the reference refresh rate, the compensation effects of a smaller refresh rate and a larger refresh rate can be considered, and the compensation effect is prevented from being too poor.
In some optional embodiments, step 130 specifically includes: and calculating the difference value of the same-position non-reference compensation data and the reference compensation data under the same gray scale binding point. The non-reference compensation data and the reference compensation data with the same position represent the non-reference compensation data and the reference compensation data corresponding to the same sub-pixel in the same pixel unit.
Still represented in matrix form with the non-reference compensation data and the reference compensation data. Fig. 3 shows reference compensation data corresponding to the gray-scale tie n of the sub-pixel a in each pixel unit at the refresh rate F2, and fig. 4 shows non-reference compensation data corresponding to the gray-scale tie n of the sub-pixel a in each pixel unit at the refresh rate F1.
It should be understood that the compensation data in fig. 3 and 4 may represent the GaiN coefficient GaiN 1as described above, and may also represent the offset as described above. The numerical values in fig. 3 and 4 are only for the convenience of understanding the present application and are not intended to limit the present application.
Step 130 specifically includes: calculate the difference between 0.0305 at line 1, column 1 in fig. 4 and 0.0314 at line 1, column 1 in fig. 3, calculate the difference between 0.0480 at line 1, column 2 in fig. 4 and 0.0510 at line 1, column 2 in fig. 3, … …, and calculate the difference between 0.0016 at line 1080 in fig. 4 and 0.0016 at line 2340, column 1080 in fig. 3.
Illustratively, the difference between the data shown in fig. 4 and fig. 3 is calculated, resulting in a set of first compensation data as shown in fig. 5.
As described above, each pixel unit may include sub-pixels of a plurality of colors. As shown in fig. 6, taking the pixel unit including three color sub-pixels as an example, the sub-pixels are respectively a sub-pixel α, a sub-pixel β, and a sub-pixel γ. Fig. 6 illustrates the number of rows of pixel cells as M and the number of columns of pixel cells as N. In the pixel unit with the row number of 1, α 21 represents that the gray scale binding point n of the sub-pixel α in the 1 st row and the 1 st column of the 1 st row corresponds to non-reference compensation data under a non-reference refresh rate, and α 11 represents that the gray scale binding point n of the sub-pixel α in the 1 st row and the 1 st column of the 1 st row corresponds to reference compensation data under a reference refresh rate; β 21 represents the gray scale binding point n of the sub-pixel β in the 1 st row and the 1 st column of the 1 st row corresponding to the non-reference compensation data at the non-reference refresh rate, and β 11 represents the gray scale binding point n of the sub-pixel β in the 1 st row and the 1 st column of the 1 st row corresponding to the reference compensation data at the reference refresh rate; gamma 21 represents that the gray scale binding point n of the sub-pixel gamma of the 1 st row and the 1 st column of the 1 st row at the non-reference refresh rate corresponds to non-reference compensation data, and gamma 11 represents that the gray scale binding point n of the sub-pixel gamma of the 1 st row and the 1 st column of the 1 st row at the reference refresh rate corresponds to reference compensation data; … …, respectively; in the pixel unit with the row number of M, alpha 2N represents that a gray scale binding point N of a sub-pixel alpha of an Nth row of an Mth row at a non-reference refresh rate corresponds to non-reference compensation data, and alpha 1N represents that a gray scale binding point N of a sub-pixel alpha of an Nth row of an Mth row at a reference refresh rate corresponds to reference compensation data; beta 2N represents that the gray scale binding point N of the sub-pixel beta of the Nth row and the Nth column of the Mth row corresponds to non-reference compensation data under the non-reference refresh rate, and beta 1N represents that the gray scale binding point N of the sub-pixel beta of the Nth row and the Nth column of the Mth row corresponds to reference compensation data under the reference refresh rate; gamma 2N indicates that the gray scale binding point N of the sub-pixel gamma of the Mth row and the Nth column at the non-reference refresh rate corresponds to non-reference compensation data, and gamma 1N indicates that the gray scale binding point N of the sub-pixel gamma of the Mth row and the Nth column at the reference refresh rate corresponds to reference compensation data.
In some optional embodiments, step 130 may specifically include: calculating a difference between the non-reference compensation data and the reference compensation data; and rounding the difference value to obtain first compensation data.
The difference between the non-reference compensation data and the reference compensation data is usually a decimal, and the decimal and the integer are usually stored in a binary manner, and a decimal point is also required to be stored when the decimal is stored, so that the storage process of the integer is relatively simple compared with the decimal. In addition, in the subsequent steps, data meeting the preset difference range needs to be eliminated from the first compensation data, and the difference is rounded, so that the preset difference range is more conveniently set.
In some optional embodiments, the step of rounding the difference may specifically include: multiplying the difference by 10N1Wherein N1 is a positive integer, and N1 is capable of multiplying the smallest absolute value of the absolute values of the plurality of differences by 10N1And then an integer.
For example, as shown in fig. 5, all the differences between the non-reference compensation data and the reference compensation data are 4-bit fractions, and the minimum absolute value of the absolute values of the differences between the refresh rate F1 and the refresh rate F2 is | (0.0314-0.0315) | 0.0001. Illustratively, N1 may be 1. 0.0001*1041, i.e. the minimum absolute value is rounded to 1.
According to the embodiment of the application, the minimum absolute value of the absolute values of the plurality of differences is rounded, so that each difference can be rounded.
In step 140, part of the data in the first compensation data is excluded to obtain second compensation data, which can be understood that the compression method provided in the embodiment of the present application is a lossy compression.
The applicant finds that, under the condition that the difference between the compensation data corresponding to the reference refresh rate and the non-reference refresh rate of the same sub-pixel under the same gray scale binding point is not large, namely under the condition that the difference is small, during compensation, the non-reference refresh rate can directly share the compensation data corresponding to the reference refresh rate, so that the influence on the compensation effect under the non-reference refresh rate is small.
Illustratively, the difference range may be preset before step 140.
In some alternative embodiments, the preset difference range may be [ -a, + a [ -a ])]Wherein a is N2 x 10N3/2N3 is a positive integer and is an even number, and N2 is a natural number.
For example, if N2 is 0.8 and N3 is 4, the preset difference range is [ -80, +80 ]. As shown in table 1, table 1 shows compensation data of the sub-pixels a in row 1, column 1, row 1, column 2, and row 1, column 3 at the reference refresh rate F2 and the non-reference refresh rate F1, respectively. The difference values corresponding to the sub-pixels a1-1, a1-2 are within the range [ -80, +80], and the difference values corresponding to the sub-pixels a1-1, a1-2 can be excluded from the first compensation data.
TABLE 1
Pixel F2 F1 F1-F2 (F1-F2)*104 Whether or not to exclude
A1-1 0.0314 0.0315 0.0001 1 Is that
A1-2 0.0510 0.0480 -0.0030 -30 Is that
A1-3 0.0014 0.0103 0.0089 89 Whether or not
In the embodiment of the application, the preset difference range is set to take 0 as a central point, so that the difference with small influence on the compensation effect can be effectively eliminated.
In some optional embodiments, the number of the first compensation data that meet the preset difference range in the first compensation data is greater than the number of the first compensation data that do not meet the preset difference range in the first compensation data. For example, the number of the first compensation data conforming to the preset difference range may be set to be greater than 50% of the total number of the first compensation data. Further, the number of the first compensation data conforming to the preset difference range may be set to be less than or equal to 80% of the total number of the first compensation data.
By setting more first compensation data in accordance with the preset difference range, more than half of the total amount of the first compensation data can be eliminated, the data is further compressed, and the storage space required by the second compensation data is reduced.
In some alternative embodiments, as described above, the pixel units of the display panel may be distributed in an array, the set of initial compensation data corresponding to each of the pixel units of the display panel at the plurality of refresh rates may be represented in a matrix, and the reference compensation data, the non-reference compensation data, the first compensation data, and the second compensation data may also be represented in a matrix. And the position of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data corresponds to the position of each pixel unit in the display panel one by one.
Still taking the first compensation data shown in fig. 5 as an example, the first compensation data of fig. 5 can be expressed as:
Figure BDA0003172593360000121
further, rounding may be performed on the first compensation data:
Figure BDA0003172593360000122
further, step 140 may specifically include: and setting the first compensation data which is subjected to the rounding and conforms to the preset difference range as 0, and keeping the first compensation data which is not conformed to the preset difference range unchanged to obtain second compensation data. The position of each element in the matrix of the second compensation data corresponds to the position of each pixel unit in the display panel.
For example, if the predetermined difference range is [ -80, +80], the second compensation data can be expressed in matrix form as:
Figure BDA0003172593360000131
in some optional embodiments, after step 140, the method provided in the embodiments of the present application may further include: the reference compensation data and the second compensation data are stored. Specifically, the reference compensation data and the second compensation data can be stored in a storage module of the display panel, and when the display panel displays, the reference compensation data and the second compensation data can be stored in the storage module and called, so that compensation is completed. Illustratively, the memory module of the display panel may include a flash memory (flash) module.
For example, the reference refresh rate is F2, and the non-reference refresh rates are F1 and F3, and the compensation data can be stored in the manner shown in table 2.
TABLE 2
Figure BDA0003172593360000132
In some optional embodiments, after step 140, the step of storing the reference compensation data and the second compensation data may specifically include: constructing a row value sequence and a column value index sequence of non-0 elements in the matrix of the second compensation data, wherein the row value sequence comprises column positions of the non-0 elements and numerical values of the non-0 elements in the matrix of the second compensation data, and the column value index sequence comprises the column position of the first non-0 element of each row in the matrix of the second compensation data; and storing the reference compensation data, the row value sequence and the column value index sequence.
Specifically, a vector Value of a matrix of the second compensation data may be defined, which includes vector positions V _ Position and H _ Position; value may store non-zero elements in the matrix of the second compensation data in a line-major order, V _ Position stores a column index of each element in Value, and H _ Position stores a Position number of a first non-zero element in each row in Value elements, that is: value [ k ] ═ a [ i ] [ j ], V _ Position [ k ] ═ j, H _ Position [ i ] < = k < H _ Position [ i +1] are formed.
A row-valued sequence and a column-valued index sequence encoding may then be constructed with non-zero elements in the matrix of the second compensation data.
For example, the matrix of the second compensation data is:
Figure BDA0003172593360000141
constructing a row value sequence: corresponding to the vector Position V _ Position and filled with Value, respectively, the row Value sequence includes: (3,89), … … (1078,107), (1079,170), (1080,522) … … (3,102) … …, and the like, wherein (3,89) indicates that the column in which the non-zero element 89 is located is the 3 rd column, (1078,107) indicates that the column in which the non-zero element 107 is located is the 1078 th column, (1079,170) indicates that the column in which the non-zero element 170 is located is the 1079 th column, (1080,522) indicates that the column in which the non-zero element 522 is located is the 1080 th column, and … … (3,102) indicates that the column in which the non-zero element 102 is located is the 3 rd column, and the like.
Constructing a column Value index sequence, wherein the position sequence number of the first non-zero element in each row in the Value elements comprises the following steps: (3, …,1789,1908), where 3 denotes column 3 where the first non-zero element of row 1 is located, and so on.
For a clearer understanding of the row value sequence and the column value index sequence, for example, the matrix of the second compensation data includes 3 rows and 5 columns, and the matrix of the second compensation data is:
Figure BDA0003172593360000142
the sequence of row values then includes: the expression of (3,1), (1,1), (3,1), (4,1), (3,1) indicates that the non-zero element 1 is arranged in the 3 rd column, (1,1) indicates that the non-zero element 1 is arranged in the 1 st column, (3,1) indicates that the non-zero element 1 is arranged in the 3 rd column, and (4,1) indicates that the non-zero element 1 is arranged in the 4 th column. The column index sequence includes (3,1,4), where 3 indicates that the column in which the first non-zero element in the first row is located is the 3 rd column, 1 indicates that the column in which the first non-zero element in the second row is located is the 1 st column, and 4 indicates that the column in which the first non-zero element in the third row is located is the 4 th column.
According to the embodiment of the application, the storage is performed in a row value sequence and a column value index sequence, and the method is simple and convenient.
It can be understood that, in the actual display process of the display panel, the stored reference compensation data, the row value sequence and the column value index sequence can be obtained, when the current refresh rate is the reference refresh rate, the reference compensation data is directly used for compensation, and when the current refresh rate is the non-reference refresh rate, the compensation data actually corresponding to the non-reference refresh rate is determined according to the obtained stored reference compensation data, the row value sequence and the column value index sequence.
For example, according to the row value sequence and the column value index sequence, it is determined that the value corresponding to the sub-pixel a in the pixel unit of the 1 st row and the 1 st column is 0, and when the current refresh rate is the non-reference refresh rate, compensation is performed according to the data corresponding to the sub-pixel a in the pixel unit of the 1 st row and the 1 st column in the matrix of the reference compensation data; for another example, the value of the sub-pixel A in the pixel unit of the 1 st row and 3 rd column is determined to be 89 according to the row value sequence and the column value index sequence, for example, 89 is to multiply the decimal by 10N1After rounding, 89 is divided by 10N1And divide 89 by 10N1The obtained value and the reference compensation numberAnd summing the data corresponding to the sub-pixel A in the pixel unit of the 1 st row and the 3 rd column in the matrix, and taking the summed value as the compensation data actually corresponding to the sub-pixel A in the pixel unit of the 1 st row and the 3 rd column under the non-reference refresh rate.
The compensation data compression method of the display panel in the embodiment of the application can be realized by a compensation data compression device of the display panel.
It should be noted that, in the compensation data compression method for a display panel provided in the embodiment of the present application, the execution main body may be a compensation data compression device for a display panel, or a control module in the compensation data compression device for a display panel, which is used for executing the compensation data compression method for a display panel. In the embodiment of the present application, a compensation data compression method for a display panel performed by a compensation data compression device of the display panel is taken as an example, and the compensation data compression device of the display panel provided in the embodiment of the present application is described.
Fig. 7 is a schematic structural diagram of a compensation data compression apparatus of a display panel according to an embodiment of the present application. The compensation data compression apparatus 700 of the display panel may include a data obtaining module 701, a refresh rate selecting module 702, a difference calculating module 703 and a difference filtering module 703.
A data obtaining module 701, configured to obtain compensation data corresponding to each pixel unit of the display panel at multiple refresh rates;
a refresh rate selecting module 702, configured to select one refresh rate from the multiple refresh rates as a reference refresh rate, where refresh rates other than the reference refresh rate are non-reference refresh rates;
a difference calculating module 703, configured to calculate a difference between the non-reference compensation data and the reference compensation data to obtain first compensation data, where the compensation data corresponding to the reference refresh rate is the reference compensation data, and the compensation data corresponding to the non-reference refresh rate is the non-reference compensation data;
and the difference value screening module 704 is configured to exclude the first compensation data that meets a preset difference value range from the first compensation data to obtain second compensation data, so as to obtain compressed compensation data corresponding to the non-reference refresh rate.
According to the compensation data compression device of the display panel, provided by the embodiment of the application, one of the plurality of refresh rates is selected as a reference refresh rate, the non-selected non-reference refresh rate is used as a non-reference refresh rate, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain first compensation data, then the data which accords with the preset difference range in the first compensation data is eliminated to obtain second compensation data, and compared with the non-reference compensation data corresponding to the non-reference refresh rate, the eliminated data is reduced in the second compensation data, so that the data amount of the second compensation data can be reduced compared with the non-reference compensation data, the storage space required by the compensation data corresponding to the non-reference refresh rate is reduced, and the cost is reduced; and the Mura compensation data under different refresh rates can be rapidly and effectively acquired by the display panel, so that the quality of a multi-refresh screen and the yield of products are improved.
In some optional embodiments, the refresh rate selection module 702 is specifically configured to:
and selecting the refresh rate with the value of the refresh rate as the middle value from the plurality of refresh rates as the reference refresh rate.
In some optional embodiments, the difference calculation module 703 is specifically configured to:
calculating a difference between the non-reference compensation data and the reference compensation data;
and rounding the difference value to obtain first compensation data.
In some optional embodiments, the difference calculation module 703 is specifically configured to:
multiplying the difference by 10N1Wherein N1 is a positive integer, and N1 is capable of multiplying the smallest absolute value of the absolute values of the plurality of differences by 10N1And then an integer.
In some alternative embodiments, the predetermined difference range is [ -a, + a [ -a ], + a [ -a ], ]]Wherein a is N2 x 10N3/2N3 is a positive integer and is an even number, N2 is a natural number;
preferably, the number of the first compensation data that meet the preset difference range in the first compensation data is greater than the number of the first compensation data that do not meet the preset difference range in the first compensation data.
In some optional embodiments, the reference compensation data, the non-reference compensation data, the first compensation data and the second compensation data are all represented in a matrix form;
the position of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data corresponds to the position of each pixel unit in the display panel one by one;
in some optional embodiments, the difference filtering module 704 is specifically configured to:
and setting the first compensation data which accord with the preset difference range as 0, and keeping the first compensation data which do not accord with the preset difference range unchanged to obtain second compensation data, wherein the position of each element in the matrix of the second compensation data corresponds to the position of each pixel unit in the display panel one by one.
In some optional embodiments, the apparatus further comprises a storage module for:
constructing a row value sequence and a column value index sequence of non-0 elements in the matrix of the second compensation data, wherein the row value sequence comprises column positions of the non-0 elements and numerical values of the non-0 elements in the matrix of the second compensation data, and the column value index sequence comprises the column position of the first non-0 element of each row in the matrix of the second compensation data;
and storing the reference compensation data, the row value sequence and the column value index sequence.
The compensation data compression device of the display panel in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. For example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, a super mobile personal computer (ultra-N2 object persona N1al coN2, UN2PC), a netbook or a personal digital assistant (persona N1al digital assistant N1t, PDA), and the like, and the non-mobile electronic device may be a server, a network Attached Storage (N1 ethernet Attached Storage, N1AS), a personal computer (persona N1al coN2, PC), a televisioN (televisioN N1, TV), a teller machine, a self-service machine, and the like, and the embodiment of the present application is not particularly limited.
The compensation data compression device of the display panel in the embodiment of the present application may be a device having an operating system. The operating system may be AN android (AN1droid) operating system, AN ios operating system, or other possible operating systems, and the embodiment of the present application is not particularly limited.
The embodiment of the application further provides a compensation method of a display panel, which is used for compensating the display panel according to the compensation data of the compensation data compression method of the display panel in any one of the embodiments. As shown in fig. 8, the compensation method for a display panel according to the embodiment of the present application includes steps 810 to 830.
Step 810, acquiring reference compensation data and second compensation data corresponding to the reference refresh rate;
step 820, when the display panel displays at the reference refresh rate, compensating the display panel by the reference compensation data;
and 830, when the display panel displays at the non-reference refresh rate, compensating the display panel by the sum of the second compensation data and the reference compensation data.
According to the compensation method of the display panel provided by the embodiment of the application, the compensation data of the compensation data compression method of the display panel according to any one of the embodiments is used for compensating the display panel, the second compensation data is less than excluded data relative to the non-reference compensation data corresponding to the non-reference refresh rate, and therefore, compared with the non-reference compensation data, the data amount of the second compensation data can be reduced, the storage space required by the compensation data corresponding to the non-reference refresh rate is reduced, and the cost is reduced; and the Mura compensation data under different refresh rates can be rapidly and effectively acquired by the display panel, so that the quality of a multi-refresh screen and the yield of products are improved.
For example, the pixel units of the display panel are distributed in an array, and each pixel unit may include sub-pixels of multiple colors. Taking red sub-pixels as an example, if the reference compensation data corresponding to the red sub-pixels in the first row and the first column at the reference refresh rate is R11, when the display panel displays at the reference refresh rate, the red sub-pixels in the first row and the first column are directly compensated by R11, and if the second compensation data corresponding to the red sub-pixels in the first row and the first column at the non-reference refresh rate is Δ R11, the red sub-pixels in the first row and the first column are compensated by Δ R11+ R11 when the display panel displays at the non-reference refresh rate.
For another example, also taking red sub-pixels as an example, if the reference compensation data corresponding to the red sub-pixels in the first row and the first column at the reference refresh rate is R11, when the display panel is displayed at the reference refresh rate, the red sub-pixels in the first row and the first column are directly compensated by R11, and if the second compensation data corresponding to the red sub-pixels in the first row and the first column at the non-reference refresh rate is null, the second compensation data corresponding to the red sub-pixels in the first row and the first column at the non-reference refresh rate is considered to be 0, and when the display panel is displayed at the non-reference refresh rate, the red sub-pixels in the first row and the first column are also compensated by R11.
It should be understood that the second compensation data obtained by the compensation data compression method for a display panel according to any of the above embodiments is compressed compensation data corresponding to a non-reference refresh rate, and the compressed compensation data corresponding to the non-reference refresh rate should be decompressed to obtain compensation data actually used by the display panel when the display panel is displayed at the non-reference refresh rate. In addition, the compensation data compression method for the display panel according to this embodiment may be understood as a lossy compression, so that the compensation data actually used by the display panel after unlocking when displaying at the non-reference refresh rate may be different from the initial compensation data (i.e., the non-reference compensation data) corresponding to the non-reference refresh rate obtained in step 110.
Fig. 9 is a schematic diagram illustrating a hardware configuration of a compensation data processing apparatus for a display panel according to an embodiment of the present invention.
The compensation data processing device at the display panel may comprise a processor 901 and a memory 902 storing computer program instructions.
Specifically, the processor 901 may include a Central Processing Unit (CPU), or A Specific Integrated Circuit (ASIC), or may be configured as one or more integrated circuits implementing an embodiment of the present invention.
Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, memory 902 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 902 may include removable or non-removable (or fixed) media, where appropriate. The memory 902 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 902 is a non-volatile solid-state memory. In a particular embodiment, the memory 902 includes read only memory (RON 2). Where appropriate, the RON2 may be mask-programmed RON2, programmable RON2(pro 2), erasable pro 2(EPRON2), electrically erasable pro 2(eepro 2), electrically rewritable RON2(EARON2), or flash memory, or a combination of two or more of these.
The processor 901 realizes the compensation data compression method of any one of the display panels in the above embodiments or realizes the compensation method of any one of the display panels in the above embodiments by reading and executing the computer program instructions stored in the memory 902.
In one example, the compensation data processing device of the display panel may further include a communication interface 903 and a bus 910. As shown in fig. 9, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.
The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
Bus 910 includes hardware, software, or both to couple the components of the compensation data processing device of the display panel to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro-channel architecture (N2CA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of these. Bus 910 can include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
The compensation data processing device of the display panel may perform the compensation data compression method of the display panel in the embodiment of the present application, or perform the compensation method of the display panel in the embodiment of the present application, thereby implementing the compensation data compression method of the display panel and the compensation data compression apparatus of the display panel described in conjunction with fig. 1 and 7, or implementing the compensation method of the display panel described in conjunction with fig. 8.
In addition, in combination with the compensation data compression method of the display panel in the above embodiment, or in combination with the compensation method of the display panel in the above embodiment, the embodiment of the present application may provide a computer storage medium to implement. The computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by the processor, implement the compensation data compression method for any display panel in the foregoing embodiments, or the computer program instructions, when executed by the processor, implement the compensation method for any display panel in the foregoing embodiments, and can achieve the same technical effects, and are not described herein again to avoid repetition.
The processor is the processor in the electronic device in the above embodiment. Examples of a computer-readable storage medium include a non-transitory machine-readable medium, such as an electronic circuit, a semiconductor Memory device, a Read-Only Memory (ROM), a flash Memory, an erasable ROM (erom), a floppy disk, a CD-ROM, an optical disk, a hard disk, and so forth.
It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. "computer-readable media" may include any medium that can store or transfer information. Examples of computer readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.

Claims (10)

1. A compensation data compression method of a display panel, comprising:
acquiring initial compensation data corresponding to each pixel unit of a display panel under various refresh rates;
selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, wherein the refresh rates except the reference refresh rate in the plurality of refresh rates are non-reference refresh rates;
calculating a difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein the initial compensation data corresponding to the reference refresh rate is the reference compensation data, and the initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data;
and eliminating data which accord with a preset difference range in the first compensation data to obtain second compensation data, thereby obtaining compressed compensation data corresponding to the non-reference refresh rate.
2. The compensation data compression method of claim 1, wherein said selecting one of the plurality of refresh rates as a reference refresh rate comprises:
and selecting the refresh rate with the value of the refresh rate as the middle value as the reference refresh rate.
3. The method of claim 1, wherein the calculating the difference between the non-reference compensation data and the reference compensation data to obtain the first compensation data comprises:
calculating a difference between the non-reference compensation data and the reference compensation data;
and rounding the difference value to obtain the first compensation data.
4. The method of claim 3, wherein the rounding the difference comprises:
multiplying the difference by 10N1Wherein N1 is a positive integer and N1 is capable of multiplying the smallest absolute value of a plurality of absolute values of the difference by 10N1And then an integer.
5. The compensation data compression method of claim 1, wherein the predetermined difference range is [ -a, + a ]]Wherein a is N2 x 10N3/2N3 is a positive integer and is an even number, N2 is a natural number;
preferably, the number of the first compensation data in the first compensation data that meet the preset difference range is greater than the number of the first compensation data in the first compensation data that do not meet the preset difference range.
6. The compensation data compression method of a display panel according to claim 1, wherein the reference compensation data, the non-reference compensation data, the first compensation data and the second compensation data are represented in a matrix form;
the position of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data corresponds to the position of each pixel unit in the display panel one by one;
the removing of the first compensation data meeting a preset difference range in the first compensation data to obtain second compensation data includes:
and setting the first compensation data which is in line with the preset difference range as 0, and keeping the first compensation data which is not in line with the preset difference range unchanged to obtain second compensation data, wherein the position of each element in a matrix of the second compensation data corresponds to the position of each pixel unit in the display panel one by one.
7. The compensation data compression method of a display panel according to claim 6, wherein after the obtaining of the second compensation data, the method further comprises:
constructing a row value sequence and a column value index sequence of non-0 elements in the matrix of the second compensation data, wherein the row value sequence comprises column positions of the non-0 elements and numerical values of the non-0 elements in the matrix of the second compensation data, and the column value index sequence comprises a column position of a first non-0 element of each row in the matrix of the second compensation data;
and storing the reference compensation data and the row value sequence and the column value index sequence.
8. A compensation method of a display panel, wherein the compensation data of the compensation data compression method of the display panel according to any one of claims 1 to 7 compensates for the display panel, the compensation method comprising:
acquiring reference compensation data and second compensation data corresponding to the reference refresh rate;
compensating the display panel with the reference compensation data when the display panel is displayed at the reference refresh rate;
and when the display panel displays at the non-reference refresh rate, compensating the display panel according to the second compensation data and the reference compensation data.
9. A compensation data compression apparatus for a display panel, comprising:
the data acquisition module is used for acquiring compensation data corresponding to each pixel unit of the display panel under various refresh rates;
a refresh rate selecting module, configured to select one refresh rate from the multiple refresh rates as a reference refresh rate, where refresh rates other than the reference refresh rate in the multiple refresh rates are non-reference refresh rates;
the difference value calculation module is used for calculating the difference value between non-reference compensation data and reference compensation data to obtain first compensation data, wherein the compensation data corresponding to the reference refresh rate is reference compensation data, and the compensation data corresponding to the non-reference refresh rate is non-reference compensation data;
and the difference value screening module is used for eliminating the first compensation data which accord with a preset difference value range in the first compensation data to obtain second compensation data, so that the compressed compensation data corresponding to the non-reference refresh rate is obtained.
10. A compensation data processing apparatus of a display panel, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the compensation data compression method of the display panel according to any one of claims 1 to 7, or the program or instructions when executed by the processor implementing the steps of the compensation method of the display panel according to claim 8.
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CN109147668A (en) * 2018-09-25 2019-01-04 京东方科技集团股份有限公司 External compensation method, driving unit and the display panel of display panel
CN111554218A (en) * 2020-04-24 2020-08-18 昆山国显光电有限公司 Display parameter determination method and device and display equipment
CN112133239A (en) * 2020-09-27 2020-12-25 昆山国显光电有限公司 Compensation voltage determination method and device and display device

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CN114822397A (en) * 2022-05-17 2022-07-29 昆山国显光电有限公司 Data processing method and device and display panel compensation method and device
CN114822397B (en) * 2022-05-17 2023-11-17 昆山国显光电有限公司 Data processing method and device, display panel compensation method and device

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