Data voltage compensation method of display panel, display panel and device

Abstract

Embodiments of the present application provide a data voltage compensation method of a display panel, a display panel and a device. The display area of the display panel includes a center area. A target pixel unit is located outside the center area. The method includes: obtaining a gray level characteristic parameter based on a first compensation parameter corresponding to the center area at a target gray level and a second compensation parameter corresponding to the target pixel unit at the target gray level; obtaining a compensation weight of the target pixel unit at the target gray level based on the gray level characteristic parameter; obtaining a target compensation value of the target pixel unit based on a compensation reference value, a compensation coefficient and the compensation weight of the target pixel unit at the target gray level; and compensating a data voltage of the target pixel unit based on the target compensation value of the target pixel unit. The method provided by the embodiments of the present application can effectively improve the display unevenness problem of the display panel caused by various factors.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panels, and in particular to a data voltage compensation method of a display panel, a display panel and an apparatus. BACKGROUND

[0002] When a display panel displays, due to production process, the display panel may have display non-uniformity when displaying the same gray scale. In order to improve the display non-uniformity of the display panel, a data voltage compensation scheme of the display panel is developed by technical personnel.

[0003] However, based on the existing data voltage compensation scheme of the display panel, the display panel still has the problem of display non-uniformity. Therefore, a more perfect data voltage compensation scheme of the display panel is needed to further improve the problem of display non-uniformity of the display panel. SUMMARY

[0004] Embodiments of the present application provide a data voltage compensation method of a display panel, a display panel and an apparatus, aiming to improve the problem of display non-uniformity of the display panel.

[0005] In a first aspect, embodiments of the present application provide a data voltage compensation method of a display panel, a display area of the display panel comprising a center area. A target pixel unit is located outside the center area. The method comprises:

[0006] Based on a first compensation parameter corresponding to the center area at a target gray scale and a second compensation parameter corresponding to the target pixel unit at the target gray scale, a gray scale feature parameter is obtained.

[0007] Based on the gray scale feature parameter, a compensation weight of the target pixel unit at the target gray scale is obtained.

[0008] Based on a compensation reference value, a compensation coefficient and the compensation weight of the target pixel unit at the target gray scale, a target compensation value of the target pixel unit is obtained.

[0009] The data voltage of the target pixel unit is compensated based on the target compensation value of the target pixel unit.

[0010] In a possible implementation manner of the first aspect, the first compensation parameter is related to a corresponding compensation reference value.

[0011] In a possible implementation manner of the first aspect, the second compensation parameter is related to a corresponding compensation reference value, or the second compensation parameter is related to a corresponding initial compensation value.

[0012] In a possible implementation manner of the first aspect, the display area of the display panel further includes a first to-be-compensated area, and the target pixel unit is located in the first to-be-compensated area. The corresponding compensation reference value is an average of compensation reference values of all first pixel units in the first to-be-compensated area at the target gray scale. Or the corresponding initial compensation value is an average of initial compensation values of all first pixel units in the first to-be-compensated area at the target gray scale. The color of the first pixel unit is the same as the color of the target pixel unit.

[0013] In a possible implementation manner of the first aspect, the corresponding compensation reference value is the compensation reference value of the target pixel unit at the target gray scale. Or the corresponding initial compensation value is the initial compensation value of the target pixel unit at the target gray scale.

[0014] In a possible implementation manner of the first aspect, the gray scale feature parameter is obtained based on the corresponding first compensation parameter of the center area at the target gray scale and the corresponding second compensation parameter of the target pixel unit at the target gray scale.

[0015] The gray scale feature parameter is obtained by performing division operation based on the first compensation parameter and the second compensation parameter.

[0016] In a possible implementation manner of the first aspect, the compensation weight of the target pixel unit at the target gray scale is obtained based on the gray scale feature parameter.

[0017] The compensation weight of the target pixel unit at the target gray scale is obtained according to a preset corresponding relationship between the gray scale feature parameter and the compensation weight based on the gray scale feature parameter.

[0018] In a possible implementation manner of the first aspect, the target compensation value of the target pixel unit is obtained based on the compensation reference value of the target pixel unit at the target gray scale, the compensation coefficient and the compensation weight.

[0019] The target compensation value of the target pixel unit is obtained by performing multiplication operation based on the compensation reference value of the target pixel unit at the target gray scale, the compensation coefficient and the compensation weight.

[0020] In a second aspect, an embodiment of the present application provides a display panel, and a data voltage compensation method of the display panel is the method provided in the first aspect.

[0021] In a third aspect, an embodiment of the present application provides a display device, and the display device includes the display panel provided in the second aspect.

[0022] The embodiment of the present application provides a data voltage compensation method of a display panel, which can obtain a gray scale characteristic parameter by a first compensation parameter of a center region and a second compensation parameter of a non-center region, and the gray scale characteristic parameter is used for representing the difference of display unevenness. The compensation weight can be obtained based on the gray scale characteristic parameter, and the target compensation value can be obtained based on the compensation weight, the compensation reference value and the compensation coefficient. Therefore, when the gray scale characteristic coefficients are different, the compensation weight can be different, so that the target compensation value is also different, thereby realizing the difference compensation of different regions, and therefore, the problem of display unevenness of the display panel caused by various factors can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 A schematic diagram of a display panel provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 A flowchart of a data voltage compensation method of a display panel provided by the embodiment of the present application is shown in the figure.

[0026] Figure 3 A schematic diagram of a display panel provided by the embodiment of the present application is shown in the figure.

[0027] Figure 4 A schematic diagram of the corresponding relationship between the gray scale characteristic parameter and the compensation weight provided by the embodiment of the present application is shown in the figure.

[0028] Figure 5 A schematic diagram of the corresponding relationship between the gray scale characteristic parameter and the compensation weight provided by the embodiment of the present application is shown in the figure.

[0029] Figure 6 A schematic diagram of the corresponding relationship between the gray scale characteristic parameter and the compensation weight provided by the embodiment of the present application is shown in the figure.

[0030] Figure 7 A schematic diagram of the corresponding relationship between the gray scale characteristic parameter and the compensation weight provided by the embodiment of the present application is shown in the figure.

[0031] Figure 8 A schematic diagram of a display device provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0033] It should be noted that the embodiments described are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] The terms used in the embodiments of the present application are merely for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0036] The inventor found that although there are various compensation mechanisms for the data voltage compensation scheme of the display panel. For example, the data voltage compensation value is obtained based on the gray scale of the pixel unit, and then the data voltage is compensated by using the data voltage compensation value. For another example, the data voltage compensation value is obtained based on multiple parameters such as gray scale and DBV value, and then the data voltage is compensated by using the data voltage compensation value. However, no matter which data voltage compensation mechanism of the display panel is used, it is global, uniform and fixed, that is, the compensation method of the data voltage of each pixel unit of the display panel is indistinguishable and consistent.

[0037] The data voltage compensation mechanism of the display panel is burned into the display driving chip (i.e. DDIC) of the display panel. When the display panel displays, the display driving chip compensates the data voltage by using the burned compensation scheme. However, no matter which compensation mechanism is used, for the same display panel or even the same batch of display panels, the display driving chip is completely consistent, and the data voltage compensation scheme in the display driving chip is determined and unchanged, and the compensation scheme of the display driving chip is indistinguishable.

[0038] Therefore, the display unevenness caused by the difference between different display panels of the same batch, or the display unevenness caused by the difference between different regions of the display panel cannot be effectively solved by such global and consistent compensation scheme. The specific reasons for this problem include:

[0039] 1. When the precision error of the panel evaporation process occurs, the thickness of the light emitting material will be uneven, which will cause the display panel to display unevenly when displaying.

[0040] 2、Transistor etching process precision error occurs, resulting in changes in the characteristics of the transistor, and the change in the characteristics of the transistor is not uniform, which leads to uneven display or vertical stripes and other display uneven situations when the display panel displays.

[0041] And the compensation scheme based on the same global has not involved the difference between different display panels in the same batch, nor has it involved the deviation of the same display due to various processes. Thus, even if the compensation scheme is used when the display panel displays, there are still problems of uneven display.

[0042] To solve the above technical problems, the present application provides a data voltage compensation method for display panel, chip, display panel and device.

[0043] The embodiment of the present application provides a data voltage compensation method for display panel, which is used for compensating the data voltage of the pixel in the display panel to improve the problem of uneven display. As shown in the figure, Figure 1 The display area of the display panel 100 includes a center area A1. The center area A1 refers to the part of the center of the display panel 100. The center area A1 includes a center pixel unit, which refers to the pixel unit located at the center of the display panel 100. The target pixel unit is located outside the center area A1. The target pixel unit is the pixel unit to be compensated, and the target pixel unit includes a target pixel. In a possible implementation, the target pixel unit also includes a pixel circuit for driving the target pixel.

[0044] As shown in the figure, Figure 2 The data voltage compensation method for the display panel 100 provided by the embodiment of the present application includes:

[0045] S100, based on the first compensation parameter corresponding to the center area A1 at the target gray scale, and the second compensation parameter corresponding to the target pixel unit at the target gray scale, the gray scale characteristic parameter corresponding to the target pixel unit is obtained. The target gray scale is the gray scale value of the target pixel unit in the target frame.

[0046] In the embodiments of the present application, in order to measure the number of factors of display brightness non-uniformity of the display panel 100, the other regions of the display panel 100 except the center region A1 can be divided into multiple regions. The gray scale characteristic parameter is an important factor for measuring the non-uniformity factors of the display panel 100, and the greater the gray scale characteristic parameter, the higher the degree of display brightness non-uniformity of the display panel 100. And the greater the difference in the gray scale characteristic parameters corresponding to the target pixel units in different regions of the other regions of the display panel 100 except the center region A1, the more factors affecting the display panel 100. For example, when the factors of display brightness non-uniformity of the display panel 100 are single factors, the difference in the gray scale characteristic parameters corresponding to the target pixel units in different regions of the other regions of the display panel 100 except the center region A1 is small. For another example, when the factors of display brightness non-uniformity of the display panel 100 are multiple factors, the difference in the gray scale characteristic parameters corresponding to the target pixel units in different regions of the other regions of the display panel 100 except the center region A1 is large.

[0047] The first compensation parameter and the second compensation parameter are important bases for obtaining the gray scale characteristic parameter.

[0048] In a possible implementation, the first compensation parameter is related to a corresponding compensation reference value.

[0049] For example, the compensation reference value corresponding to the first compensation parameter is a compensation reference value in the center region A1. Under the same DBV value and the same gray scale, all the pixels of the same color in the center region A1 correspond to the same compensation reference value, and the compensation reference value is the corresponding compensation reference value.

[0050] It should be noted that different DBV values can correspond to different compensation reference values, and therefore in actual application, the compensation reference value corresponding to the first compensation parameter can be a compensation reference value in the center region A1 corresponding to the current DBV of the display panel 100. Alternatively, under the same DBV value, different gray scales correspond to different compensation reference values, and at this time, the compensation reference value corresponding to the first compensation parameter refers to the compensation reference value corresponding to the target gray scale in the center region A1.

[0051] For example, the compensation reference value corresponding to the first compensation parameter is the average of compensation reference values in the central region A1. The compensation reference value corresponding to the first compensation parameter is the average of compensation values of all pixel units in the central region A1 having the same color as the target pixel unit at the target gray level. In this implementation, the compensation reference value can be different under different setting parameters, wherein the setting parameters include at least one of the region, the DBV value, the DBV interval, and the gray level value, and the DBV interval refers to an interval with two DBV values as endpoints. For example, the compensation reference value in different regions can be different under the same DBV value and the same gray level value; the compensation reference value can be different under the same region, the same gray level value, and different DBV intervals, and so on.

[0052] In the embodiments of the present application, the compensation reference value corresponding to the pixel unit in the central region A1 can be obtained based on a preset corresponding relationship, which can be stored in the memory in the form of a graph or a table, and the data can be directly read when used.

[0053] In a possible implementation, the first compensation coefficient is equal to the corresponding compensation reference value.

[0054] In a possible implementation, the first compensation parameter is related to the corresponding compensation value. The compensation value corresponding to the first compensation parameter is the average of compensation values of all pixel units in the central region A1 having the same color as the target pixel unit at the target gray level. The color of the first pixel unit is the same as the color of the target pixel unit.

[0055] In the embodiments of the present application, the compensation value of the central region A1 can follow the compensation value in the related art, and no secondary compensation is additionally performed, so that the compensation value corresponding to the pixel unit in the central region A1 is the actual compensation value. The compensation value of the pixel unit in the central region A1 can be obtained by referring to the corresponding relationship or calculated based on the corresponding relationship according to a preset calculation method, wherein the corresponding relationship can be stored in the memory in the form of a graph or a table, and the data can be directly read when used.

[0056] In a possible implementation, the first compensation parameter is equal to the corresponding compensation value.

[0057] In a possible implementation, the second compensation parameter is related to the corresponding compensation reference value.

[0058] For example, the compensation reference value corresponding to the second compensation parameter refers to a compensation reference value in a region where the target pixel unit is located. The display region of the display panel 100 further includes a first to-be-compensated region A2, and the target pixel unit is located in the first to-be-compensated region A2. Under the same DBV value and the same gray scale, all the pixels in the first to-be-compensated region A2 correspond to the same compensation reference value, and the compensation reference value is the corresponding compensation reference value.

[0059] It should be noted that different DBV values can correspond to different compensation reference values, and therefore, in actual application, the corresponding compensation reference value can be a compensation reference value corresponding to the current DBV of the display panel 100 and in the region where the target pixel unit is located. Alternatively, under the same DBV value, different gray scales correspond to different compensation reference values. In this case, the compensation reference value corresponding to the second compensation parameter refers to a compensation reference value corresponding to the target gray scale in the region where the target pixel unit is located.

[0060] For example, the compensation reference value corresponding to the second compensation parameter refers to an average value of compensation reference values in a region where the target pixel unit is located. For example, the display region of the display panel 100 further includes a first to-be-compensated region A2, and the target pixel unit is located in the first to-be-compensated region A2. The compensation reference value corresponding to the second compensation parameter is an average value of compensation values of all first pixel units in the first to-be-compensated region A2 under the target gray scale. The first pixel unit has the same color as the target pixel unit. In this implementation manner, the compensation reference value can be different under different setting parameters, wherein the setting parameters include at least one of a region, a DBV value, a DBV interval, and a gray scale value, and the DBV interval refers to an interval with two DBV values as endpoints. For example, under the same DBV value and the same gray scale value, the compensation reference values in different regions can be different, such as Figure 3 As shown in FIG. 1, the display panel 100 includes a plurality of first to-be-measured regions A1, and the compensation reference values of different first to-be-measured regions A1 can be different; the compensation reference values in the same region and under the same gray scale value can be different; the compensation reference values in the same region and under different DBV intervals can be different; and so on.

[0061] In a possible implementation manner, the second compensation parameter is equal to the corresponding compensation reference value.

[0062] In a possible implementation manner, the second compensation parameter is related to the corresponding initial compensation value.

[0063] The initial compensation value is obtained based on the compensation reference value and the compensation coefficient. In a possible implementation, the initial compensation value of a pixel is the product of the compensation reference value corresponding to the pixel and the compensation coefficient corresponding to the pixel. The compensation reference value of the pixel can be obtained based on a preset correspondence relationship, which can be stored in a memory in the form of a graph or a table, and when used, the data can be directly read.

[0064] In a possible implementation, the display area of the display panel 100 further includes a first to-be-compensated area A2, and the target pixel unit is located in the first to-be-compensated area A2. The compensation value corresponding to the second compensation parameter is the average of the initial compensation values of all the first pixel units in the first to-be-compensated area A2 at the target gray scale. The color of the first pixel unit is the same as that of the target pixel unit.

[0065] In a possible implementation, the compensation value of the first pixel unit in the first to-be-compensated area A2 is the compensation value corresponding to the second compensation parameter.

[0066] In a possible implementation, the compensation reference value corresponding to the second compensation parameter is the compensation reference value of the target pixel unit at the target gray scale.

[0067] In this implementation, if the compensation reference value of the target pixel unit is also related to the DBV value, the compensation reference value corresponding to the second compensation parameter is the compensation reference value of the target pixel unit at the corresponding DBV and at the target gray scale. The corresponding DBV value can be the current DBV value of the display panel 100.

[0068] In a possible implementation, the initial compensation value corresponding to the second compensation parameter is the initial compensation value of the target pixel unit at the target gray scale.

[0069] In this implementation, if the initial compensation value of the target pixel unit is also related to the DBV value, the initial compensation value corresponding to the second compensation parameter is the initial compensation value of the target pixel unit at the corresponding DBV and at the target gray scale. The corresponding DBV value can be the current DBV value of the display panel 100.

[0070] In a possible implementation, the second compensation parameter is equal to the corresponding initial compensation value.

[0071] In a possible implementation, the gray scale feature parameter is obtained based on the first compensation parameter corresponding to the center region A1 at the target gray scale and the second compensation parameter corresponding to the target pixel unit at the target gray scale, and the obtaining includes: performing a division operation based on the first compensation parameter and the second compensation parameter to obtain the gray scale feature parameter. That is, k = the first compensation parameter / the second compensation parameter, or k = the second compensation parameter / the first compensation parameter, where k is the gray scale feature parameter, and " / " is a division sign.

[0072] For example, the first compensation parameter is equal to the corresponding compensation value, the second compensation parameter is equal to the corresponding initial compensation value, and k = the second compensation parameter / the first compensation parameter, and the following equation is obtained:

[0073] k = M2 / M1, where " / " is a division sign, M2 is the initial compensation value corresponding to the second compensation parameter, and M1 is the compensation value corresponding to the first compensation parameter. For example, M1 is the compensation value corresponding to the center region A1

[0074] In S200, the compensation weight of the target pixel unit at the target gray scale is obtained based on the gray scale feature parameter.

[0075] In S200, the corresponding relationship between the gray scale feature parameter and the compensation weight can be determined based on experiments or simulations, and the compensation weight of the target pixel unit at the target gray scale can be obtained according to the gray scale feature parameter. The compensation weight is a weight value of the compensation coefficient of the display brightness. The compensation weight is a modification of the brightness compensation, which aims to finally improve the uniformity of the overall display brightness of the display panel 100.

[0076] In a possible implementation, the compensation weight of the target pixel unit at the target gray scale is obtained based on the gray scale feature parameter, and the obtaining includes: obtaining the compensation weight of the target pixel unit at the target gray scale according to a preset corresponding relationship between the gray scale feature parameter and the compensation weight based on the gray scale feature parameter.

[0077] The preset corresponding relationship between the gray scale feature parameter and the compensation weight can be determined by experiments or simulations. In a possible implementation, the corresponding relationship between the gray scale feature parameter and the compensation weight can be determined as shown in Table 1. Figure 4

[0078] In a possible implementation, the corresponding relationship between the gray scale feature parameter and the compensation weight can be stored in the memory in the form of a table or a graph. The corresponding relationship between the gray scale feature parameter and the compensation weight includes a plurality of gray scale feature values and a plurality of compensation weights, where the gray scale feature values and the compensation weights correspond to each other one by one.

[0079] For example, the first compensation parameter is equal to the corresponding compensation value, the second compensation parameter is equal to the corresponding initial compensation value, and k = the second compensation parameter / the first compensation parameter, and the following equation is obtained: Figure 5 ​As shown, in one possible implementation, the correspondence between grayscale feature parameters and compensation weights is a piecewise linear function. For example, the correspondence between grayscale feature parameters and compensation weights includes multiple grayscale feature values ​​and multiple compensation weights, with a one-to-one correspondence between the grayscale feature values ​​and compensation weights. The multiple grayscale feature values ​​include a first grayscale feature value and a second grayscale feature value, where the first and second grayscale feature values ​​are adjacent. The multiple compensation weights include a first compensation weight and a second compensation weight. The first grayscale feature value corresponds to the first compensation weight, and the second grayscale feature value corresponds to the second compensation weight. For any third grayscale feature value located between the first and second grayscale feature values, its corresponding third compensation weight is a linear interpolation of the first and second compensation weights based on the grayscale feature value. That is, the third compensation weight w3 corresponding to the third grayscale feature value satisfies:

[0080] w3=w1+[(w2-w1) / (k2-k1)] (k3-k1)

[0081] Where k3 is the third grayscale feature value, w1 is the first compensation weight, w2 is the second compensation weight, k1 is the first grayscale feature value, k2 is the second grayscale feature value, and " / " is the division sign. " is the multiplication sign.

[0082] For example, such as Figure 6 and Figure 7 As shown, the correspondence between grayscale feature parameters and compensation weights is illustrated by multiple grayscale feature values ​​and multiple compensation weights, with a one-to-one correspondence between the grayscale feature values ​​and compensation weights. The multiple grayscale feature values ​​include a first grayscale feature value and a second grayscale feature value, which are adjacent to each other. The multiple compensation weights include a first compensation weight and a second compensation weight. The first grayscale feature value corresponds to the first compensation weight, and the second grayscale feature value corresponds to the second compensation weight. For any third grayscale feature value located between the first and second grayscale feature values, its corresponding third compensation weight is either the first compensation weight or the second compensation weight. Wherein, in Figure 6 In this context, the third compensation weight is the same as the first compensation weight; Figure 7 In this context, the third compensation weight is the same as the second compensation weight.

[0083] S300 obtains the target compensation value of the target pixel unit based on the compensation reference value, compensation coefficient, and compensation weight of the target pixel unit under the target gray level.

[0084] In step S300, the target compensation value of the target pixel unit is calculated according to a preset algorithm based on the compensation reference value, compensation coefficient and compensation weight of the target pixel unit under the target gray level.

[0085] In a possible implementation, the target compensation value of the target pixel unit is obtained based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target gray scale, which includes: performing multiplication operation based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target gray scale to obtain the target compensation value of the target pixel unit. That is:

[0086] Target compensation value = compensation reference value Compensation coefficient Compensation weight

[0087] In a possible implementation, the compensation reference value The compensation coefficient is the initial compensation value corresponding to the target pixel unit, and thus the target compensation value = initial compensation value Compensation weight.

[0088] The compensation reference value in the above formula can be related to at least one of the DBV value, the gray scale and the region where the pixel is located. In a possible implementation, the compensation reference value is related to the DBV value, the gray scale and the region where the pixel is located; thus, the compensation reference value of the target pixel unit at the target gray scale refers to the compensation reference value of the region where the target pixel unit is located, at the current DBV value of the display panel 100 and with the gray scale value being the target gray scale.

[0089] S400, compensating the data voltage of the target pixel unit based on the target compensation value of the target pixel unit.

[0090] In step S400, after obtaining the target compensation value of the target pixel unit, the final output Vdata is obtained after compensating the target compensation value on the basis of the original value of the output voltage Vdata. That is, Vdata2 = Vdata1 + target compensation value. Wherein, Vdata2 is the final output Vdata. Vdata1 is the original value of the data voltage, that is, the data voltage value before brightness compensation.

[0091] In the embodiment of the present application, the gray scale characteristic parameter of the pixel in the non-center region A1 is determined by comparing with the first compensation parameter of the center region A1, and the gray scale parameter can represent the difference between the target pixel unit and the pixel in the center region A1. For this difference, the compensation weight of the compensation coefficient is determined. Different gray scale characteristic parameters correspond to different compensation weights, so that the target compensation value of different target pixels at the target gray scale is different, thereby realizing the regional compensation of the display panel 100, and improving the uniformity of the display brightness of the display panel 100.

[0092] The embodiment of the present application further provides a display driving chip, which comprises one or more processors, a memory, a plurality of application programs and one or more computer programs, wherein the one or more computer programs are stored in the memory, and the one or more computer programs comprise instructions, which, when executed by the display driving chip, can realize the method provided by any of the foregoing embodiments.

[0093] In an embodiment of the present application, the display driving chip comprises a memory, and the memory stores a corresponding relationship between a compensation reference value and a DBV value and a gray scale value, a corresponding relationship between a compensation coefficient and a DBV value and a gray scale value, and a corresponding relationship between a compensation weight and a gray scale characteristic parameter.

[0094] The embodiment of the present application further provides a display panel 100, and a data voltage compensation method of the display panel 100 is the method provided by any of the foregoing embodiments, or the display panel 100 is driven by the display driving chip provided by any of the foregoing embodiments.

[0095] As shown in FIG. 2, Figure 8 The present application further provides a display device 200, which comprises the display panel 100 provided by the foregoing embodiments.

[0096] The same or similar parts among various embodiments in the present specification can be referred to each other. Especially, for the device embodiments and the terminal embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the related parts can be referred to the description in the method embodiments.

Claims

1. A data voltage compensation method of a display panel, characterized by, The display area of the display panel comprises a center area; The target pixel unit is located outside the center area; comprising: obtaining a gray scale feature parameter based on a first compensation parameter corresponding to the center area at a target gray scale and a second compensation parameter corresponding to the target pixel unit at the target gray scale; obtaining a compensation weight of the target pixel unit at the target gray scale based on the gray scale feature parameter; obtaining a target compensation value of the target pixel unit based on a compensation reference value, a compensation coefficient and the compensation weight of the target pixel unit at the target gray scale; compensating a data voltage of the target pixel unit based on the target compensation value of the target pixel unit.

2. The method of claim 1, wherein, The first compensation parameter is related to a corresponding compensation reference value.

3. The method of claim 1, wherein, The second compensation parameter is related to a corresponding compensation reference value, or the second compensation parameter is related to a corresponding initial compensation value.

4. The method of claim 3, wherein, The display area of the display panel further comprises a first to-be-compensated area, and the target pixel unit is located in the first to-be-compensated area; the corresponding compensation reference value is an average value of compensation reference values of all first pixel units in the first to-be-compensated area at the target gray scale; or the corresponding initial compensation value is an average value of initial compensation values of all first pixel units in the first to-be-compensated area at the target gray scale; the color of the first pixel unit is the same as the color of the target pixel unit.

5. The method of claim 3, wherein, The corresponding compensation reference value is a compensation reference value of the target pixel unit at the target gray scale; or the corresponding initial compensation value is an initial compensation value of the target pixel unit at the target gray scale.

6. The method of claim 1, wherein, obtaining a gray scale feature parameter based on a first compensation parameter corresponding to the center area at a target gray scale and a second compensation parameter corresponding to the target pixel unit at the target gray scale comprises: performing a division operation on the first compensation parameter and the second compensation parameter to obtain the gray scale feature parameter.

7. The method of claim 1, wherein, obtaining a compensation weight of the target pixel unit at the target gray scale based on the gray scale feature parameter comprises: obtaining the compensation weight of the target pixel unit at the target gray scale according to a preset corresponding relationship between the gray scale feature parameter and the compensation weight based on the gray scale feature parameter.

8. The method of claim 1, wherein, obtaining a target compensation value of the target pixel unit based on a compensation reference value, a compensation coefficient and the compensation weight of the target pixel unit at the target gray scale comprises: performing a multiplication operation on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target gray scale to obtain the target compensation value of the target pixel unit.

9. A display panel, characterized by, The data voltage compensation method of the display panel is the method of any one of claims 1-8.

10. A display device, characterized by comprising: The display panel comprises the display panel of claim 9. The display panel comprises the display panel of claim 9.

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