CN113504992B - Compensation data compression method, compensation method, device and equipment of display panel - Google Patents

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

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CN113504992B
CN113504992B CN202110822846.3A CN202110822846A CN113504992B CN 113504992 B CN113504992 B CN 113504992B CN 202110822846 A CN202110822846 A CN 202110822846A CN 113504992 B CN113504992 B CN 113504992B
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compensation data
display panel
refresh rate
compensation
refresh
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CN113504992A (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

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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 the display panel under a plurality of refresh rates; selecting one refresh rate from a plurality of refresh rates as a reference refresh rate, wherein refresh rates other than the reference refresh rate in the plurality of refresh rates are non-reference refresh rates; calculating the difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein initial compensation data corresponding to the reference refresh rate is the reference compensation data, and initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data; and eliminating the data which accords with the 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 at various refresh rates can be reduced.

Description

Compensation data compression method, compensation method, device and equipment of display panel
Technical Field
The present application relates to the field of display technologies, and in particular, to a method, an apparatus, and a device for compressing compensation data of a display panel.
Background
The refresh rate is an important parameter for characterizing the display image stability of the display device. Current display devices can be switched between different refresh rates. For example, when a user views text through the display device, the display device may operate at a relatively low refresh rate (e.g., 60 Hz)). For another example, the display device may operate at a relatively high refresh rate (e.g., 144 Hz) when a user views an animation or plays a game versus a battle through the display device. To improve display uniformity at each refresh rate, corresponding compensation data at each refresh rate is typically stored, requiring a large memory space.
Disclosure of Invention
The embodiment of the application provides a compensation data compression method, a compensation method, a device and equipment of a display panel, which can reduce the storage space occupied by compensation data under various refresh rates.
In a first aspect, an embodiment of the present application provides a method for compressing compensation data of a display panel, including: acquiring initial compensation data corresponding to each pixel unit of the display panel under a plurality of refresh rates; selecting one refresh rate from a plurality of refresh rates as a reference refresh rate, wherein refresh rates other than the reference refresh rate in the plurality of refresh rates are non-reference refresh rates; calculating the difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein initial compensation data corresponding to the reference refresh rate is the reference compensation data, and initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data; and eliminating the data which accords with the 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 a plurality of refresh rates as a reference refresh rate includes:
and selecting the refresh rate with the value of the refresh rate in the plurality of refresh rates as the intermediate value 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 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 value includes:
multiplying the difference by 10 N1 Wherein 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 10 N1 The latter is an integer.
In a possible implementation manner of the first aspect, the preset difference range is [ -a, +a]Wherein a=n2×10 N3/2 N3 is a positive integer and an even number, and N2 is a natural number;
preferably, the number of the first compensation data which accords with the preset difference range in the first compensation data is larger than the number of the first compensation data which does not accord with 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 positions of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data are in one-to-one correspondence with the positions of each pixel unit in the display panel;
removing the first compensation data which accords with the preset difference range from the first compensation data to obtain second compensation data, wherein the method comprises the following steps:
setting the first compensation data to be 0 in accordance with the preset difference range, and keeping unchanged the first compensation data not in accordance with the preset difference range 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 a 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 column positions of first non-0 elements of each row in the matrix of the second compensation data;
reference compensation data and a sequence of row values and a sequence of column value indices are stored.
In a second aspect, an embodiment of the present application provides a compensation method for a display panel, where the display panel is compensated according to compensation data of the compensation data compression method for a display panel according to any one of the embodiments of the first aspect, the compensation method including:
Acquiring reference compensation data and second compensation data corresponding to the reference refresh rate;
when the display panel displays at the reference refresh rate, compensating the display panel with reference compensation data;
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 a plurality of refresh rates;
the refresh rate selecting module is used for selecting one refresh rate from a 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;
the difference value screening module is used for eliminating first compensation data which accords with a preset difference value range in the first compensation data to obtain second compensation data, so that compressed compensation data corresponding to a 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 method for compensating data compression of a display panel according to the first aspect when executing the computer program instructions, or implements the method for compensating a display panel according to the second aspect when executing the computer program instructions.
In a fifth aspect, an embodiment of the present application provides a computer storage medium having stored thereon computer program instructions that when executed by a processor implement the method for compensating data for a display panel according to the first aspect, or that when executed by a processor implement the method for compensating a display panel according to the second aspect.
According to the compensation data compression method, the compensation method, the device and the equipment of the display panel, one type of the refresh rate is selected as the reference refresh rate, the unselected refresh rate is used as the non-reference refresh rate, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain the first compensation data, then the data which accords with the preset difference value range in the first compensation data is eliminated to obtain the second compensation data, and compared with the non-reference compensation data corresponding to the non-reference refresh rate, the eliminated data is less in the second compensation data, 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 display panel can quickly and effectively acquire Mura compensation data under different refresh rates, so that the quality of the multi-refresh screen and the product yield are improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
Fig. 1 is a flow chart illustrating a method for compressing compensation data of a display panel according to an embodiment of the application;
FIG. 2 is a schematic diagram of initial compensation data provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of reference compensation data provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of non-reference compensation data provided by an embodiment of the present application;
FIG. 5 is a diagram of first compensation data provided by an embodiment of the present application;
FIG. 6 is a diagram showing first compensation data according to another embodiment of the present application;
fig. 7 is a schematic structural diagram of a compensation data compression device of a display panel according to an embodiment of the present application;
FIG. 8 is a schematic flow chart of a compensation method for a display panel according to an embodiment of the application;
fig. 9 is a schematic hardware structure of a compensation data processing device 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 the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the 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 application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 like elements in a process, method, article or apparatus that comprises the element.
Current display panels can be switched 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 the refresh rate of 60Hz to obtain compensation data corresponding to 60Hz, and then the display panel shares the compensation data corresponding to 60Hz when the display panel displays at the refresh rates of 144Hz, 120Hz, 90Hz, 60Hz, etc. The inventor of the present application finds that, by sharing the same group of compensation data by a plurality of refresh rates, although the storage space occupied by the compensation data can be saved, the storage capacitance in the pixel circuit of each sub-pixel of the display panel has a difference in charging duration between different refresh rates, and it can be understood that the higher the refresh rate is, the shorter the charging duration of the storage capacitance in the pixel circuit is. For example, when the display panel displays at a refresh rate of 144Hz using compensation data at 60Hz, mura or an original Mura area not shown at 60Hz becomes more serious, and thus, the Mura condition compensation at all refresh rates cannot be effectively covered by sharing the compensation data at a single refresh rate by a plurality of refresh rates.
If the display panel has the corresponding compensation data under the multiple refresh rates, more memory space is needed to store the corresponding compensation data under the multiple refresh rates. For example, taking the resolution of the display panel as 2340×720, the bits as 8 bits, the 0-255 gray levels include 7 gray level binding points, the refresh rates include 60Hz, 90Hz, and 120Hz as examples, the refresh rates 60Hz, 90Hz, and 120Hz have respective corresponding compensation data, the required occupied storage space is about 746MB, where 746 mb= ((3×2340×720/1024/1024) × 7*3), 3 represents the number of sub-pixels included in the pixel unit, 2340×720 represents the resolution, 8 represents the bits, two 1024 represent KB and MB conversions, 7 represents the number of gray level binding points, and 3 represents the number of refresh rates. Therefore, the storage space of the storage module of the display panel needs to be set larger, which is not beneficial to cost control, and if the compensation data are not effectively compressed, the display panel cannot quickly and effectively acquire Mura compensation data under different refresh rates, so that the quality of the multi-refresh screen and the yield of products are reduced.
In order to solve the above problems, embodiments of the present application provide a method, an apparatus, and a device for compressing compensation data of a display panel, and embodiments of the method, the apparatus, and the device for compressing compensation data of a display panel will be described below with reference to the accompanying drawings.
As shown in fig. 1, the method for compressing compensation data of a display panel according to the embodiment of the 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.
Step 120, selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, and selecting refresh rates other than the reference refresh rate from the plurality of refresh rates as non-reference refresh rates.
And 130, calculating a difference value between the non-reference compensation data and the reference compensation data to obtain first compensation data, wherein initial compensation data corresponding to the reference refresh rate is the reference compensation data, and initial compensation data corresponding to the non-reference refresh rate is the non-reference compensation data.
And 140, eliminating the data which accords with the 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 type of refresh rate is selected as the reference refresh rate, the unselected refresh rate is used as the non-reference refresh rate, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain the first compensation data, then the data which accords with the preset difference value range in the first compensation data is eliminated to obtain the second compensation data, and compared with the non-reference compensation data corresponding to the non-reference refresh rate, the eliminated data is less in the second compensation data, so that the data amount 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 display panel can quickly and effectively acquire Mura compensation data under different refresh rates, so that the quality of the multi-refresh screen and the product yield are improved.
For example, the pixel units of the display panel may be distributed in an array. The respective corresponding sets of the initial compensation data of each pixel unit of the display panel under the multiple 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 one by one.
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 storage manner of the initial compensation data corresponding to the sub-pixel a in the pixel unit at any refresh rate may be as 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 A1 st row and A1 st column of pixels, pixel1080 represents A1 st row and a 1080 th column of Pixel units, A1-1 represents initial compensation data corresponding to a sub-Pixel a in the 1 st row and the 1 st column of Pixel units, a2340-1080 represents initial compensation data corresponding to a sub-Pixel a in the 2340 st row and the 1080 th column of Pixel units, and the like.
The a sub-pixel may be a sub-pixel of any one color in the pixel unit, for example.
In some embodiments, mura compensation may be performed on the display panel prior to step 110, 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 storage manner of the initial compensation data may be as shown in fig. 2.
For example, the display panel is an 8-bit display panel, that is, the display panel can display a gray scale range of 0 to 255. In the process of determining the initial compensation data of the display panel, the initial compensation data corresponding to the gray scale outside the gray scale binding points can be determined by a linear interpolation method. Specifically, the gray scale binding points may include 32 gray scales, 64 gray scales, 96 gray scales, 128 gray scales, 160 gray scales, 192 gray scales, 224 gray scales, 255 gray scales, and the like.
For example, for any gray-scale binding point at any refresh rate, the step of determining 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 the 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 point picture under the value of the adjusted initial compensation data, and the adjusted value can be used as the initial compensation data finally corresponding to the gray-scale binding point.
For example, in determining the initial compensation data corresponding to the gray levels except the gray level binding points by using the linear interpolation method, after the gray level binding points are selected, the gray level binding points may be ordered in the order from the small gray level value to the large gray level value corresponding to the gray level binding points, the n+1th gray level binding point and the n th gray level binding point may be used, and the initial compensation data may include the initial Gain coefficient Gain and the initial offset as examples, and the initial Gain coefficient corresponding to the gray level g except the gray level binding points may be equal toWherein, gain n+1 Represents the initial Gain coefficient corresponding to the n+1th gray scale binding point, gain n The initial gain coefficient corresponding to the nth gray scale binding point is represented, Δg represents a gray scale difference value between the (n+1) th gray scale binding point and the nth gray scale binding point, G represents a gray scale value between the (n+1) th gray scale binding point and the nth gray scale binding point, and n represents a gray scale value corresponding to the nth gray scale binding point. Similarly, the initial offset in the initial compensation data corresponding to the gray level g outside the gray level binding point may be equal to +.>Wherein, the offset n+1 Represents the initial offset corresponding to the n+1th gray-scale binding point, offset n And representing the initial offset corresponding to the nth gray-scale binding point.
It can be understood that taking the initial compensation data including the initial Gain coefficient Gain and the initial offset as an example, for example, the gray-scale binding point m is the gray-scale value=gain×m+offset after compensation corresponding to the gray-scale binding point m of the display panel.
Of course, the initial compensation data may be the compensation gray-scale value b, and the compensated gray-scale value=m+b corresponding to the gray-scale binding point m of the display panel. It will be appreciated that b may be negative or positive.
The above-described determination method of the initial compensation data and the specific form of the initial compensation data are only examples and are not intended to limit the present application.
In addition, since the luminous efficiencies of the red sub-pixel, the green sub-pixel and the blue sub-pixel of the display panel are different, specific values of the initial compensation data corresponding to each of the red sub-pixel, the green sub-pixel and the blue sub-pixel at the same gray scale binding point may also be different, and specific values of the initial compensation data corresponding to each of the sub-pixels at different positions of the same color at the same gray scale binding point may also be different. The application does not limit the specific value of the initial compensation data corresponding to the sub-pixels at each position of each color.
In some alternative embodiments, step 120 may specifically include: and selecting the refresh rate with the value of the refresh rate in the plurality of refresh rates as the intermediate value as the reference refresh rate. For convenience of distinction, the refresh rate that is not selected is referred to as a non-reference refresh rate, 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, then the 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 which finally corresponds to the non-reference refresh rate is based on the reference refresh rate, the second compensation data is required to be decompressed in the actual display process of the display panel, the compensation data which actually corresponds to the non-reference refresh rate is obtained for compensation, and the middle refresh rate is selected as the reference refresh rate, so that the compensation effect of the smaller refresh rate and the larger refresh rate can be considered, and the compensation effect is prevented from being too bad.
In some alternative embodiments, step 130 specifically includes: and calculating the difference value between the co-located non-reference compensation data and the reference compensation data under the same gray scale binding point. The co-located non-reference compensation data and the reference compensation data represent non-reference compensation data and reference compensation data corresponding to the same sub-pixel in the same pixel unit.
Still represented in a matrix form with non-reference compensation data and reference compensation data. Fig. 3 shows reference compensation data corresponding to a sub-pixel a at a grayscale binding point n in each pixel unit at the refresh rate F2, and fig. 4 shows non-reference compensation data corresponding to a sub-pixel a at a grayscale binding point n 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 factor GaiN1 described above, and may also represent the offset amount offset described above. The numerical values in fig. 3 and 4 are merely 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 of row 1 and column 1 in fig. 4 and 0.0314 of row 1 and column 1 in fig. 3, calculate the difference between 0.0480 of row 1 and column 2 in fig. 4 and 0.0510 of row 1 and column 2 in fig. 3, … …, calculate the difference between 0.0016 of row 2340 and column 1080 in fig. 4 and 0.0016 of row 2340 and 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 a pixel unit including three color sub-pixels as an example, sub-pixel α, sub-pixel β, and sub-pixel γ are respectively used. Fig. 6 illustrates that the number of rows of pixel cells is M and the number of columns of pixel cells is N. In the pixel unit with the line number of 1, α21 represents that the gray-scale binding point n of the sub-pixel α of the 1 st line and the 1 st column at the non-reference refresh rate corresponds to non-reference compensation data, and α11 represents that the gray-scale binding point n of the sub-pixel α of the 1 st line and the 1 st column at the reference refresh rate corresponds to reference compensation data; β21 represents non-reference compensation data corresponding to a gray-scale binding point n of the 1 st row and 1 st column sub-pixel β at the non-reference refresh rate, and β11 represents reference compensation data corresponding to a gray-scale binding point n of the 1 st row and 1 st column sub-pixel β at the reference refresh rate; γ21 represents non-reference compensation data corresponding to the gray-scale binding point n of the sub-pixel γ of the 1 st row and 1 st column at the non-reference refresh rate, and γ11 represents reference compensation data corresponding to the gray-scale binding point n of the sub-pixel γ of the 1 st row and 1 st column at the reference refresh rate; … …; in the pixel unit with the line number M, alpha 2N represents that the gray scale binding point N of the sub-pixel alpha of the nth column of the Mth line corresponds to non-reference compensation data under the non-reference refresh rate, and alpha 1N represents that the gray scale binding point N of the sub-pixel alpha of the nth column of the Mth line corresponds to reference compensation data under the reference refresh rate; β2n represents that the gray-scale binding point N of the sub-pixel β of the nth column of the mth row corresponds to the non-reference compensation data at the non-reference refresh rate, and β1n represents that the gray-scale binding point N of the sub-pixel β of the nth column of the mth row corresponds to the reference compensation data at the reference refresh rate; gamma 2N indicates that the gray-scale binding point N of the sub-pixel gamma of the nth column of the mth row corresponds to the non-reference compensation data at the non-reference refresh rate, and gamma 1N indicates that the gray-scale binding point N of the sub-pixel gamma of the nth column of the mth row corresponds to the reference compensation data at the reference refresh rate.
In some alternative embodiments, step 130 may specifically include: calculating a difference between 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 typically a fraction, and the fraction and the integer are typically stored in binary, and the storage of the fraction also requires the storage of the fraction point, and therefore the storage of the integer is relatively simple with respect to the fraction. In addition, in the subsequent step, the data conforming to the preset difference range needs to be excluded from the first compensation data, and the difference is rounded, so that the preset difference range is more convenient to set.
In some alternative embodiments, the step of rounding the difference value may specifically include: multiplying the difference by 10 N1 Wherein 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 10 N1 The latter is an integer.
For example, as shown in fig. 5, the difference between all non-reference compensation data and reference compensation data is 4-bit decimal, and the minimum absolute value of the absolute values of the plurality of 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*10 4 =1, i.e. the minimum absolute value is rounded to 1.
According to the embodiment of the application, the minimum absolute value in 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 removed to obtain the second compensation data, which can be understood that the compression mode provided in the embodiment of the present application is a lossy compression.
The applicant finds that when the difference between the compensation data corresponding to the reference refresh rate and the non-reference refresh rate of the same sub-pixel at the same gray level binding point is not large, that is, when the difference is small, the non-reference refresh rate can directly share the compensation data corresponding to the reference refresh rate during compensation, so that the influence on the compensation effect at the non-reference refresh rate is small.
Illustratively, the difference range may be preset prior to step 140.
In some alternative embodiments, the predetermined difference range may be [ -a, +a]Wherein a=n2×10 N3/2 N3 is a positive integer and is an even number, and N2 is a natural number.
For example, taking n2=0.8 and n3=4 as an example, the preset difference range is [ -80, +80]. As shown in table 1, table 1 shows compensation data of the sub-pixels a of the 1 st row, the 1 st column, the 1 st row, the 2 nd column, and the 1 st row, the 3 rd column at the reference refresh rate F2 and the non-reference refresh rate F1, respectively. The difference value corresponding to the sub-pixels A1-1, A1-2 is within the range of [ -80, +80], and the difference value 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)*10 4 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 the center point, so that the difference with smaller influence on the compensation effect can be effectively eliminated.
In some alternative embodiments, the number of first compensation data in the first compensation data that meets the preset difference range is greater than the number of first compensation data in the first compensation data that does not meet the preset difference range. 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 the number of the first compensation data which accords with the preset difference range to be more, more than half of the total number 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, where each pixel unit of the display panel may have a set of initial compensation data corresponding to each pixel unit of the display panel at a plurality of refresh rates and each set of initial compensation data may be represented in a matrix, and each set of reference compensation data, non-reference compensation data, first compensation data, and second compensation data may be represented in a matrix. The positions of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data are in one-to-one correspondence with the positions of each pixel unit in the display panel.
Still taking the first compensation data shown in fig. 5 as an example, the first compensation data of fig. 5 can be expressed in matrix form as:
further, the first compensation data may be rounded:
further, step 140 may specifically include: and setting the first rounded compensation data to be 0, which accords with the preset difference range, and keeping unchanged, which does not accord with the preset difference range, so as 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 one by one.
For example, the predetermined difference range is [ -80, +80], and the second compensation data can be expressed in matrix form as:
in some optional embodiments, after step 140, the method provided by the embodiment 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 the 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 to be fetched, so that the compensation is completed. The memory module of the display panel may include a flash (flash) module, for example.
For example, with reference refresh rate F2 and non-reference refresh rates F1, F3, compensation data may be stored as in table 2.
TABLE 2
In some alternative 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 a 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 column positions of first non-0 elements of each row in the matrix of the second compensation data; reference compensation data and a sequence of row values and a sequence of column value indices are stored.
Specifically, a vector Value of a matrix of the second compensation data may be defined, including vector positions v_position and h_position; the Value may store non-zero elements in the matrix of the second compensation data in the row main order, the v_position stores the column index of each element in the Value, and the h_position stores the Position sequence number of the first non-zero element in each row in the Value element, that is: constitute Value [ k ] =a [ i ] [ j ], v_position [ k ] =j, h_position [ i ] <=k < h_position [ i+1].
The row value sequence and column value index sequence encodings 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:
a row value sequence is constructed: and respectively corresponding to the vector Position V_position and filling Value, wherein the row Value sequence comprises the following steps: (3,89), … … (1078,107), (1079,170), (1080,522) … … (3,102) … …, etc., wherein (3,89) represents that the column where the non-zero element 89 is located is the 3 rd column, (1078,107) represents that the column where the non-zero element 107 is located is the 1078 th column, (1079,170) represents that the column where the non-zero element 170 is located is the 1079 th column, (1080,522) represents that the column where the non-zero element 522 is located is the 1080 th column, … … (3,102) represents that the column where the non-zero element 102 is located is the 3 rd column, etc.
And constructing a column Value index sequence, wherein the column Value index sequence comprises the following steps of: (3, … …,1789,1908), wherein 3 represents that the column in which the first non-zero element of row 1 is located is column 3, 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:
the row value sequence includes: (3, 1), (1, 1), (3, 1), (4, 1), (3, 1) represents that the column in which the non-zero element 1 is located is the 3 rd column, (1, 1) represents that the column in which the non-zero element 1 is located is the 1 st column, (3, 1) represents that the column in which the non-zero element 1 is located is the 3 rd column, and (4, 1) represents that the column in which the non-zero element 1 is located is the 4 th column. The column value index sequence includes (3, 1, 4), 3 representing that the first non-zero element of the first row is in column 3,1 representing that the first non-zero element of the second row is in column 1, and 4 representing that the first non-zero element of the third row is in column 4.
According to the embodiment of the application, the storage is performed in a mode of 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 acquired, 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 acquired 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, determining 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 a non-reference refresh rate, compensating 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 example, the value corresponding to the sub-pixel a in the pixel unit of the 1 st row and the 3 rd column is determined to be 89 based on the row value sequence and the column value index sequence, for example, 89 is a decimal multiplied by 10 N1 After rounding, 89 is divided by 10 N1 And divide 89 by 10 N1 And summing the obtained value with data corresponding to the sub-pixel A in the pixel unit of the 1 st row and the 3 rd column in the matrix of the reference compensation data, 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 method for compressing compensation data of a display panel according to the embodiment of the present application, the execution body may be a compensation data compression device of the display panel, or a control module for executing the method for compressing compensation data of the display panel in the compensation data compression device of the display panel. In the embodiment of the application, the compensation data compression device of the display panel is taken as an example to execute the compensation data compression method of the display panel, and the compensation data compression device of the display panel provided by the embodiment of the application is described.
Fig. 7 is a schematic structural diagram of a compensation data compression device of a display panel according to an embodiment of the application. The display panel compensation data compression device 700 may include a data acquisition module 701, a refresh rate selection module 702, a difference calculation module 703, and a difference filtering module 703.
The data acquisition module 701 is configured to acquire compensation data corresponding to each pixel unit of the display panel at a plurality of refresh rates;
a refresh rate selection module 702, configured to select one refresh rate from a plurality of refresh rates as a reference refresh rate, and refresh rates other than the reference refresh rate from the plurality of refresh rates as non-reference refresh rates;
The difference calculating module 703 is configured to calculate a difference between the non-reference compensation data and the reference compensation data, so as to obtain first compensation data, where 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;
the difference filtering module 704 is configured to exclude first compensation data that meets a preset difference range from the first compensation data, and 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, one type of refresh rate is selected as the reference refresh rate, the unselected refresh rate is used as the non-reference refresh rate, the difference value between the non-reference compensation data and the reference compensation data is calculated to obtain the first compensation data, then the data which accords with the preset difference value range in the first compensation data is eliminated to obtain the second compensation data, and compared with the non-reference compensation data corresponding to the non-reference refresh rate, the eliminated data is less in the second compensation data, so that the data amount 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 display panel can quickly and effectively acquire Mura compensation data under different refresh rates, so that the quality of the multi-refresh screen and the product yield are improved.
In some alternative embodiments, the refresh rate selection module 702 is specifically configured to:
and selecting the refresh rate with the value of the refresh rate in the plurality of refresh rates as the intermediate value as the reference refresh rate.
In some alternative 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 alternative embodiments, the difference calculation module 703 is specifically configured to:
multiplying the difference by 10 N1 Wherein 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 10 N1 The latter is an integer.
In some alternative embodiments, the predetermined difference range is [ -a, +a]Wherein a=n2×10 N3/2 N3 is a positive integer and an even number, and N2 is a natural number;
preferably, the number of the first compensation data which accords with the preset difference range in the first compensation data is larger than the number of the first compensation data which does not accord with the preset difference range in the first compensation data.
In some alternative 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 positions of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data are in one-to-one correspondence with the positions of each pixel unit in the display panel;
In some alternative embodiments, the difference filtering module 704 is specifically configured to:
setting the first compensation data to be 0 in accordance with the preset difference range, and keeping unchanged the first compensation data not in accordance with the preset difference range 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 alternative 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 a 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 column positions of first non-0 elements of each row in the matrix of the second compensation data;
reference compensation data and a sequence of row values and a sequence of column value indices are stored.
The compensation data compression device of the display panel in the embodiment of the application can be a device, and can also be a component, an integrated circuit or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of 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, an ultra-N2 mobile personal computer (UN 2 PC), a netbook or a Personal Digital Assistant (PDA) and the like, and the non-mobile electronic device may be a server, a network attached memory (N1 etwork Attached Storage, N1 AS), a personal computer (personal computer 2 filter, PC), a TelevisioN (TV), a teller machine or a self-service machine and the like, and the embodiments of the present application are not limited in particular.
The compensation data compression device of the display panel in the embodiment of the application can be a device with an operating system. The operating system may be AN android (AN 1 android) operating system, may be AN ios operating system, and may also be other possible operating systems, which are not particularly limited in the embodiments of the present application.
The embodiment of the application also provides a compensation method of the display panel, and the display panel is compensated according to the compensation data of the compensation data compression method of the display panel according to any one of the embodiments. As shown in fig. 8, the compensation method of the display panel provided in the embodiment of the application includes steps 810 to 830.
Step 810, obtaining reference compensation data and second compensation data corresponding to the reference refresh rate;
step 820, compensating the display panel with reference compensation data when the display panel displays at the reference refresh rate;
in step 830, the display panel is compensated with the sum of the second compensation data and the reference compensation data when the display panel is displayed at the non-reference refresh rate.
According to the compensation method of the display panel provided by the embodiment of the application, the display panel is compensated by the compensation data of the compensation data compression method of the display panel according to any one of the embodiments, and the second compensation data is smaller than the non-reference compensation data corresponding to the non-reference refresh rate, so that the data amount 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 display panel can quickly and effectively acquire Mura compensation data under different refresh rates, so that the quality of the multi-refresh screen and the product yield 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 the red sub-pixel as an example, when the reference compensation data corresponding to the red sub-pixel of 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-pixel of the first row and the first column is directly compensated by R11, and when the red sub-pixel of the first row and the first column corresponds to the second compensation data at the non-reference refresh rate is Δr11, the red sub-pixel of the first row and the first column is compensated by Δr11+r11 when the display panel displays at the non-reference refresh rate.
For example, taking the red sub-pixel as an example, when the reference compensation data corresponding to the red sub-pixel of 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-pixel of the first row and the first column is directly compensated by R11, and when the second compensation data corresponding to the red sub-pixel of the first row and the first column at the non-reference refresh rate is null, the second compensation data corresponding to the red sub-pixel of the first row and the first column at the non-reference refresh rate is considered to be 0, and when the display panel displays at the non-reference refresh rate, the red sub-pixel of the first row and the first column is also compensated by R11.
It should be understood that, the second compensation data obtained by the compensation data compression method of the display panel according to any one of the embodiments above 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 the compensation data actually used by the display panel when displaying at the non-reference refresh rate. In addition, the method for compressing compensation data of the display panel of this embodiment may be understood as a lossy compression, so that the compensation data actually used when the display panel is displayed at the non-reference refresh rate obtained after unlocking 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 hardware structure diagram of a compensation data processing device of 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 in which computer program instructions are stored.
IN particular, the processor 901 may include a Central Processing Unit (CPU), or an ApplicatioN Specific IN1 programmed Circuit (ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present invention.
Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, the memory 902 may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (UN 1iversal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. The 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). The RON2 may be mask programmed RON2, programmable RON2 (pro 2), erasable RON2 (EPRON 2), electrically erasable RON2 (EEPRON 2), electrically rewritable RON2 (EARON 2), or flash memory or a combination of two or more of these, where appropriate.
The processor 901 implements the compensation data compression method of any one of the display panels of the above embodiments or implements the compensation method of any one of the display panels of 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 to each other via a bus 910, and communicate with each other.
The communication interface 903 is mainly used to implement communication between each module, device, unit, and/or apparatus in the embodiment of the present invention.
Bus 910 includes hardware, software, or both that couple components of the compensation data processing apparatus of the display panel to each other. By way of example, and not limitation, the buses 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 (N2 CA) 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 the above. Bus 910 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
The compensation data processing apparatus of a display panel may perform the compensation data compression method of a display panel in the embodiment of the present application or perform the compensation method of a display panel in the embodiment of the present application, thereby implementing the compensation data compression method of a display panel and the compensation data compression apparatus of a display panel described in connection with fig. 1 and 7 or implementing the compensation method of a display panel described in connection with fig. 8.
In addition, in combination with the method for compressing compensation data of the display panel in the above embodiment, or in combination with the method for compensating the display panel in the above embodiment, the embodiment of the application may be implemented by providing a computer storage medium. The computer storage medium has stored thereon computer program instructions; the computer program instructions realize the compensation data compression method of any one of the display panels in the above embodiments when executed by the processor, or the computer program instructions realize the compensation method of any one of the display panels in the above embodiments when executed by the processor, and the same technical effects can be achieved, so that repetition is avoided and redundant description is omitted.
The processor is a processor in the electronic device in the above embodiment. Examples of computer readable storage media include non-transitory machine readable media such as electronic circuits, semiconductor Memory devices, read-Only Memory (ROM), flash Memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, and the like.
It should be understood that the application is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. 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 shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in 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, a plug-in, a function card, or the like. When implemented in software, the elements of the 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 over transmission media or communication links by a data signal carried in a carrier wave. "computer-readable medium" may include any medium capable of storing or transmitting information. Examples of a computer readable medium include an electronic circuit, a semiconductor memory device, a ROM, a flash memory, an Erasable ROM (EROM), a floppy disk, a CD-ROM, an optical disk, a hard disk, a fiber optic medium, a radio frequency link, and so forth. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure 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, or may be performed in a different order from the order in the embodiments, or several steps 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 being, 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 which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and they should be included in the scope of the present application.

Claims (11)

1. A method for compensating data compression of a display panel, comprising:
acquiring initial compensation data corresponding to each pixel unit of the display panel under a plurality of refresh rates;
selecting one refresh rate from the plurality of refresh rates as a reference refresh rate, wherein refresh rates of the plurality of refresh rates other than the reference refresh rate are non-reference refresh rates;
calculating the 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 the data which accords 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 method of claim 1, wherein selecting one of the plurality of refresh rates as a reference refresh rate comprises:
and selecting the refresh rate with the refresh rate value being the intermediate value in the plurality of refresh rates as the reference refresh rate.
3. The method of claim 1, wherein calculating a difference between the non-reference compensation data and the reference compensation data to obtain 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. A method of compensating data compression for a display panel according to claim 3, wherein rounding the difference value comprises:
multiplying the difference by 10 N1 Wherein N1 is a positive integer, and N1 is capable of multiplying the smallest absolute value of the absolute values of the plurality of said differences by 10 N1 The latter is an integer.
5. The method of claim 1, wherein the predetermined difference range is [ -a, +a]Wherein a=n2×10 N3/2 N3 is a positive integer and is an even number, and N2 is a natural number.
6. The method for compensating data compression of a display panel according to claim 1,
the number of the first compensation data which accords with the preset difference range in the first compensation data is larger than the number of the first compensation data which does not accord with the preset difference range in the first compensation data.
7. The method of compressing compensation data for 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 each represented in a matrix form;
the positions of each element in the matrix of the reference compensation data, the non-reference compensation data and the first compensation data are in one-to-one correspondence with the position of each pixel unit in the display panel;
the step of excluding the first compensation data which accords with a preset difference range from the first compensation data to obtain second compensation data comprises the following steps:
Setting the first compensation data to be 0 in accordance with the preset difference range and keeping unchanged the first compensation data in accordance with the preset difference range, so as 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.
8. The method of compensating data compression for a display panel of claim 7,
after the second compensation data is obtained, the method further comprises:
constructing a row value sequence and a column value index sequence of non-0 elements in a matrix of the second compensation data, wherein the row value sequence comprises column positions of the non-0 elements in the matrix of the second compensation data and numerical values of the non-0 elements, and the column value index sequence comprises column positions of first non-0 elements 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.
9. A compensation method of a display panel, characterized in that the display panel is compensated according to compensation data of the compensation data compression method of a display panel according to any one of claims 1 to 8, the compensation method comprising:
Acquiring reference compensation data corresponding to the reference refresh rate and the second compensation data;
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.
10. 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 a plurality of refresh rates;
the refresh rate selecting 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 accords with a preset difference value range in the first compensation data to obtain second compensation data, so as to obtain compressed compensation data corresponding to the non-reference refresh rate.
11. A compensation data processing apparatus of a display panel, characterized by comprising a processor, a memory and a program or an instruction stored on the memory and executable on the processor, the program or instruction realizing the steps of the compensation data compression method of a display panel according to any one of claims 1 to 8 when being executed by the processor, or the steps of the compensation method of a display panel according to claim 9 when being executed by the processor.
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Publication number Priority date Publication date Assignee Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108682388A (en) * 2018-07-27 2018-10-19 京东方科技集团股份有限公司 data compression and decompression method, device and display device
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
CN110176210A (en) * 2018-07-27 2019-08-27 京东方科技集团股份有限公司 Display driving, compression/decompression method and device, display device, storage medium
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108682388A (en) * 2018-07-27 2018-10-19 京东方科技集团股份有限公司 data compression and decompression method, device and display device
CN110176210A (en) * 2018-07-27 2019-08-27 京东方科技集团股份有限公司 Display driving, compression/decompression method and device, display device, storage medium
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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