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

Abstract

The embodiment of the invention provides a data voltage compensation method of a display panel, the display panel and a device. A display area of the display panel comprises a central area. The target pixel unit is located outside the central area. The method comprises the following steps: acquiring a gray scale characteristic parameter based on a first compensation parameter corresponding to a central region under a target gray scale and a second compensation parameter corresponding to a target pixel unit under the target gray scale; and obtaining a compensation weight of the target pixel unit under the target gray scale based on the gray scale feature parameter. And obtaining a target compensation value of the target pixel unit based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit under the target gray scale. And compensating the data voltage of the target pixel unit based on the target compensation value of the target pixel unit. According to the method provided by the embodiment of the invention, the problem of non-uniform display of the display panel caused by various factors can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to a data voltage compensation method, a display panel and a device for the display panel. Background Art

[0002] When displaying, the display panel is limited by the production process, which may cause the display panel to display unevenly when displaying the same grayscale. In order to improve the problem of uneven display of the display panel, technicians have developed a data voltage compensation solution for the display panel.

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

[0004] Embodiments of the present application provide a data voltage compensation method for a display panel, a display panel, and a device, aiming to improve the problem of uneven display of the display panel.

[0005] In a first aspect, an embodiment of the present application provides a data voltage compensation method for a display panel, wherein a display area of ​​the display panel includes a central area, and a target pixel unit is located outside the central area. The method comprises: The grayscale characteristic parameter is acquired based on the first compensation parameter corresponding to the central area at the target grayscale and the second compensation parameter corresponding to the target pixel unit at the target grayscale.

[0006] Based on the grayscale characteristic parameters, a compensation weight of the target pixel unit at the target grayscale is obtained.

[0007] Based on the compensation reference value, compensation coefficient and compensation weight of the target pixel unit at the target grayscale, a target compensation value of the target pixel unit is acquired.

[0008] The data voltage of the target pixel cell is compensated based on the target compensation value of the target pixel cell.

[0009] In a possible implementation manner of the first aspect, the first compensation parameter is related to a corresponding compensation reference value.

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

[0011] In a possible implementation of the first aspect, the display area of ​​the display panel also includes a first area to be compensated, and the target pixel unit is located in the first area to be compensated. The corresponding compensation reference value is an average value of the compensation reference values ​​of all first pixel units in the first area to be compensated at the target grayscale. Or the corresponding initial compensation value is an average value of the initial compensation values ​​of all first pixel units in the first area to be compensated at the target grayscale. The color of the first pixel unit is the same as the color of the target pixel unit.

[0012] 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 grayscale, or the corresponding initial compensation value is the initial compensation value of the target pixel unit at the target grayscale.

[0013] In a possible implementation manner of the first aspect, based on a first compensation parameter corresponding to the central area at a target grayscale and a second compensation parameter corresponding to the target pixel unit at the target grayscale, obtaining the grayscale characteristic parameter includes: A grayscale characteristic parameter is obtained by performing a division operation based on the first compensation parameter and the second compensation parameter.

[0014] In a possible implementation manner of the first aspect, obtaining a compensation weight of a target pixel unit at a target grayscale based on the grayscale characteristic parameter includes: Based on the grayscale characteristic parameters, according to the preset corresponding relationship between the grayscale characteristic parameters and the compensation weights, the compensation weights of the target pixel units at the target grayscale are obtained.

[0015] In a possible implementation manner of the first aspect, acquiring a target compensation value of the target pixel unit based on a compensation reference value, a compensation coefficient, and a compensation weight of the target pixel unit at a target grayscale includes: A multiplication operation is performed based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target grayscale to obtain a target compensation value of the target pixel unit.

[0016] 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.

[0017] In a third aspect, an embodiment of the present application provides a display device, comprising the display panel provided in the second aspect.

[0018] The embodiment of the present application provides a data voltage compensation method for a display panel, which can obtain grayscale characteristic parameters through a first compensation parameter in a central area and a second compensation parameter in a non-central area, and the grayscale characteristic parameters are used to characterize the difference in display unevenness. Based on the grayscale characteristic parameters, a compensation weight can be obtained, and a target compensation value can be obtained based on the compensation weight, a compensation reference value, and a compensation coefficient. Therefore, when the grayscale characteristic coefficients are different, the compensation weights can be different, so that the target compensation values ​​obtained are also different, thereby achieving difference compensation in different areas, and therefore, the problem of uneven display of the display panel caused by various factors can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of a display panel provided in an embodiment of the present application; Figure 2 A flow chart of a data voltage compensation method for a display panel provided in an embodiment of the present application; Figure 3 A schematic diagram of a display panel provided in an embodiment of the present application; Figure 4 A schematic diagram of a correspondence between a grayscale characteristic parameter and a compensation weight provided in an embodiment of the present application; Figure 5 A schematic diagram of a correspondence between a grayscale characteristic parameter and a compensation weight provided in an embodiment of the present application; Figure 6 A schematic diagram of a correspondence between a grayscale characteristic parameter and a compensation weight provided in an embodiment of the present application; Figure 7 A schematic diagram of a correspondence between a grayscale characteristic parameter and a compensation weight provided in an embodiment of the present application; Figure 8 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0022] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] The terms used in the embodiments of the present application are only for the purpose of describing 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 plural forms, unless the context clearly indicates other meanings.

[0024] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] The inventors have found that there are a variety of compensation mechanisms for the data voltage compensation scheme of the display panel. For example, data voltage compensation based on grayscale, that is, a data voltage compensation value is obtained based on the grayscale of the pixel unit, and then the data voltage is compensated using the data voltage compensation value. For another example, a data voltage compensation value is obtained based on multiple parameters such as grayscale and DBV value, and then the data voltage is compensated using the data voltage compensation value. However, no matter which display panel the data voltage compensation mechanism is, it is globally unified and fixed, that is, the compensation method for the data voltage of each pixel unit of the display panel is indifferent and consistent.

[0026] The data voltage compensation mechanism of the display panel will be burned into the display driver chip (DDIC) of the display panel. When the display panel is displaying, the display driver chip uses the burned-in compensation scheme to compensate the data voltage. However, no matter which compensation mechanism is used, for the same display panel or even the same batch of display panels, the display driver chip is completely consistent, and the data voltage compensation scheme in the display driver chip is fixed and unchanged, and the compensation scheme of the display driver chip is the same.

[0027] Therefore, the display unevenness caused by the differences between different display panels in the same batch, or the display unevenness caused by the differences between different areas of the display panel, cannot be effectively solved by this global consistent compensation solution. The specific reasons for this problem include: 1. When there is a precision error in the panel evaporation process, the thickness of the luminescent material will be uneven, resulting in uneven display of the display panel; 2. When there is a precision error in the transistor etching process, the characteristic curve of the transistor will change, and the change in the characteristic curve of the transistor is not uniform, which will cause the display panel to display unevenly or have vertical stripes and other uneven displays.

[0028] The compensation scheme based on the same whole area does not involve the differences between different display panels in the same batch, nor does it involve the deviations of the same display surface due to multiple processes. As a result, even if the compensation scheme is used, the display panel still has the problem of uneven display.

[0029] In order to solve the above technical problems, the present application provides a data voltage compensation method, chip, display panel and device for a display panel.

[0030] The present application provides a data voltage compensation method for a display panel, which is used to compensate the data voltage of pixels in the display panel to improve the problem of uneven display. Figure 1 As shown, the display area of ​​the display panel 100 includes a central area A1. The central area A1 refers to a partial area located at the center of the display panel 100. The central area A1 includes a central pixel unit, which refers to a pixel unit located at the center of the display panel 100. The target pixel unit is located outside the central area A1. The target pixel unit is a 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.

[0031] like Figure 2 As shown, the data voltage compensation method of the display panel 100 provided in the embodiment of the present application includes: S100, based on the first compensation parameter corresponding to the central area A1 at the target grayscale and the second compensation parameter corresponding to the target pixel unit at the target grayscale, obtain the grayscale characteristic parameter corresponding to the target pixel unit. The target grayscale is the grayscale value of the target pixel unit in the target frame.

[0032] In an embodiment of the present application, in order to measure the number of factors causing uneven display brightness of the display panel 100, other areas of the display panel 100 except the central area A1 can be divided into a plurality of areas. Grayscale characteristic parameters are important factors for measuring uneven factors of the display panel 100. The larger the grayscale characteristic parameters, the higher the degree of uneven display brightness of the display panel 100. In addition, in other areas of the display panel 100 except the central area A1, the greater the difference in grayscale characteristic parameters corresponding to target pixel units in different areas, the more factors affecting the display panel 100. For example, when the factor causing uneven display brightness of the display panel 100 is a single factor, the grayscale characteristic parameters corresponding to target pixel units in different areas of the display panel 100 except the central area A1 are relatively small. For another example, when the factor causing uneven display brightness of the display panel 100 is multiple factors, the grayscale characteristic parameters corresponding to target pixel units in different areas of the display panel 100 except the central area A1 are relatively large.

[0033] The first compensation parameter and the second compensation parameter are important bases for obtaining the grayscale characteristic parameters.

[0034] In a possible implementation manner, the first compensation parameter is related to the corresponding compensation reference value.

[0035] For example, the compensation reference value corresponding to the first compensation parameter is the compensation reference value in the central area A1. Under the same DBV value and the same grayscale, all pixels of the same color in the central area A1 correspond to the same compensation reference value, and the compensation reference value is the corresponding compensation reference value.

[0036] It should be noted that different DBV values ​​may correspond to different compensation reference values, so in actual application, the compensation reference value corresponding to the first compensation parameter may be the compensation reference value in the central area A1 corresponding to the current DBV of the display panel 100. Alternatively, under the same DBV value, different grayscales correspond to different compensation reference values, and in this case, the compensation reference value corresponding to the first compensation parameter refers to the compensation reference value corresponding to the target grayscale in the central area A1.

[0037] For another example, the compensation reference value corresponding to the first compensation parameter refers to the average value of the compensation reference values ​​in the central area A1. The corresponding compensation reference value is the average value of the compensation values ​​of all pixel units in the central area A1 that have the same color as the target pixel unit at the target grayscale. In this implementation, the compensation reference value may be different under different setting parameters, wherein the setting parameters include: at least one of the area, DBV value, DBV interval, and grayscale value, wherein the DBV interval refers to an interval with two DBV values ​​as endpoints. For example, under the same DBV value and the same grayscale value, the compensation reference values ​​in different areas may be different; the same area, the same grayscale value, different DBV intervals, the compensation reference values ​​may be different, etc.

[0038] In the embodiment of the present application, the compensation reference value corresponding to the pixel unit in the central area A1 can be obtained based on a preset corresponding relationship. The corresponding relationship can be stored in the memory in the form of graphics, tables, etc. When used, the data can be directly read.

[0039] In a possible implementation manner, the first compensation coefficient is equal to the corresponding compensation reference value.

[0040] 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 compensation value of all pixel units with the same color as the target pixel unit in the central area A1 at the target grayscale. The color of the first pixel unit is the same as the color of the target pixel unit.

[0041] In the embodiment of the present application, the compensation value of the central area A1 can be the same as the compensation value in the related art, and no additional secondary compensation is performed. Therefore, the compensation value corresponding to the pixel unit in the central area A1 is its actual compensation value. The compensation value of the pixel unit in the central area A1 can be obtained by referring to the corresponding correspondence or by calculating and obtaining it according to a preset calculation method based on the corresponding correspondence. The correspondence can be stored in the memory in the form of a graph, a table, etc. When used, the data can be directly read.

[0042] In a possible implementation manner, the first compensation parameter is equal to the corresponding compensation value.

[0043] In a possible implementation manner, the second compensation parameter is related to the corresponding compensation reference value.

[0044] For example, the compensation reference value corresponding to the second compensation parameter refers to the compensation reference value in the area where the target pixel unit is located. The display area of ​​the display panel 100 also includes a first area to be compensated A2, and the target pixel unit is located in the first area to be compensated A2. Under the same DBV value and the same grayscale, all pixels in the first area to be compensated A2 correspond to the same compensation reference value, and the compensation reference value is the corresponding compensation reference value.

[0045] It should be noted that different DBV values ​​may correspond to different compensation reference values, so in actual application, the corresponding compensation reference value may be a compensation reference value corresponding to the current DBV of the display panel 100 and in the area where the target pixel unit is located. Alternatively, at the same DBV value, different grayscales correspond to different compensation reference values, and in this case, the compensation reference value corresponding to the second compensation parameter refers to the compensation reference value corresponding to the target grayscale in the area where the target pixel unit is located.

[0046] For another example, the compensation reference value corresponding to the second compensation parameter refers to the average value of the compensation reference values ​​in the area where the target pixel unit is located. For example, the display area of ​​the display panel 100 also includes a first area to be compensated A2, and the target pixel unit is located in the first area to be compensated A2. The compensation reference value corresponding to the second compensation parameter is the average value of the compensation values ​​of all first pixel units in the first area to be compensated A2 at the target grayscale. The first pixel unit has the same color as the target pixel unit. In this implementation, the compensation reference value may be different under different setting parameters, wherein the setting parameters include: area, DBV value, DBV interval and at least one of grayscale values, wherein the DBV interval refers to an interval with two DBV values ​​as endpoints. For example, under the same DBV value and the same grayscale value, the compensation reference values ​​in different areas may be different, such as Figure 3 As shown, the display panel 100 includes a plurality of first test areas A1 , and different first test areas A1 may have different compensation reference values; the same area, the same grayscale value, different DBV intervals, and the compensation reference values ​​may be different.

[0047] In a possible implementation manner, the second compensation parameter is equal to the corresponding compensation reference value.

[0048] In a possible implementation manner, the second compensation parameter is related to the corresponding initial compensation value.

[0049] The initial compensation value refers to the value 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 a pixel can be obtained based on a preset corresponding relationship, and the corresponding relationship can be stored in a memory in the form of a graph, a table, etc. When used, the data can be directly read. The initial compensation value corresponding to the second compensation parameter is the initial compensation value of the area where the target pixel unit is located.

[0050] In a possible implementation, the display area of ​​the display panel 100 also includes a first area to be compensated A2, and the target pixel unit is located in the first area to be compensated A2. The compensation value corresponding to the second compensation parameter is the average value of the initial compensation values ​​of all first pixel units in the first area to be compensated A2 at the target grayscale. The color of the first pixel unit is the same as the color of the target pixel unit.

[0051] In a possible implementation, the compensation value of the first pixel unit in the first area to be compensated A2 is In a possible implementation manner, the compensation reference value corresponding to the second compensation parameter is the compensation reference value of the target pixel unit at the target grayscale.

[0052] 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 grayscale. The corresponding DBV value may be the current DBV value of the display panel 100.

[0053] In a possible implementation manner, the initial compensation value corresponding to the second compensation parameter is an initial compensation value of the target pixel unit at the target grayscale.

[0054] 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 grayscale. The corresponding DBV value may be the current DBV value of the display panel 100.

[0055] In a possible implementation manner, the second compensation parameter is equal to the corresponding initial compensation value.

[0056] In a possible implementation, based on the first compensation parameter corresponding to the central area A1 at the target grayscale and the second compensation parameter corresponding to the target pixel unit at the target grayscale, obtaining the grayscale characteristic parameter includes: performing a division operation based on the first compensation parameter and the second compensation parameter to obtain the grayscale characteristic parameter. That is, k=first compensation parameter / second compensation parameter; or k=second compensation parameter / first compensation parameter, where k is the grayscale characteristic parameter and " / " in the formula is a division sign.

[0057] 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 = second compensation parameter / first compensation parameter, then: 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 center area A1 S200, obtaining a compensation weight of a target pixel unit at a target grayscale based on the grayscale characteristic parameter.

[0058] In step S200, the correspondence between the grayscale characteristic 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 grayscale can be queried or calculated according to the grayscale characteristic parameter. The compensation weight refers to the weight value of the compensation coefficient of the display brightness. The compensation weight is a correction to the brightness compensation, which aims to ultimately improve the uniformity of the overall display brightness of the display panel 100.

[0059] In a possible implementation, based on the grayscale characteristic parameters, obtaining the compensation weight of the target pixel unit at the target grayscale includes: based on the grayscale characteristic parameters, according to a preset correspondence between the grayscale characteristic parameters and the compensation weight, obtaining the compensation weight of the target pixel unit at the target grayscale.

[0060] The preset grayscale characteristic parameter and compensation weight correspondence relationship can be determined by experiments or simulations. In a possible implementation, the grayscale characteristic parameter and compensation weight correspondence relationship can be as follows: Figure 4 shown.

[0061] In a possible implementation, the correspondence between the grayscale characteristic parameters and the compensation weights can be stored in a memory in the form of a table, a graph, etc. The correspondence between the grayscale characteristic parameters and the compensation weights includes a plurality of grayscale characteristic values ​​and a plurality of compensation weights, wherein the grayscale characteristic values ​​correspond to the compensation weights one by one.

[0062] like Figure 5As shown, in a possible implementation, the correspondence between the grayscale characteristic parameters and the compensation weights is a piecewise linear function. For example, the correspondence between the grayscale characteristic parameters and the compensation weights includes multiple grayscale characteristic values ​​and multiple compensation weights, and the grayscale characteristic values ​​correspond to the compensation weights one by one. The multiple grayscale characteristic values ​​include a first grayscale characteristic value and a second grayscale characteristic value. Among the multiple grayscale characteristic values, the first grayscale characteristic value is adjacent to the second grayscale characteristic value; the multiple compensation weights include a first compensation weight and a second compensation weight. The first grayscale characteristic value corresponds to the first compensation weight, and the second grayscale characteristic value corresponds to the second compensation weight. For any third grayscale characteristic value between the first grayscale characteristic value and the second grayscale characteristic value, the corresponding third compensation weight is a linear interpolation of the first compensation weight and the second compensation weight based on the grayscale characteristic value. That is, the third compensation weight w3 corresponding to the third grayscale characteristic value satisfies: w3=w1+[(w2-w1) / (k2-k1)] (k3-k1) Wherein, k3 is the third grayscale characteristic value, w1 is the first compensation weight, w2 is the second compensation weight, k1 is the first grayscale characteristic value, k2 is the second grayscale characteristic value, " / " is the division sign, " ” is the multiplication sign.

[0063] For example, Figure 6 and Figure 7 As shown, there are multiple grayscale characteristic values ​​and multiple compensation weights of the correspondence between grayscale characteristic parameters and compensation weights, and the grayscale characteristic values ​​correspond to the compensation weights one by one. The multiple grayscale characteristic values ​​include a first grayscale characteristic value and a second grayscale characteristic value. Among the multiple grayscale characteristic values, the first grayscale characteristic value and the second grayscale characteristic value are adjacent; the multiple compensation weights include a first compensation weight and a second compensation weight. The first grayscale characteristic value corresponds to the first compensation weight, and the second grayscale characteristic value corresponds to the second compensation weight. For any third grayscale characteristic value between the first grayscale characteristic value and the second grayscale characteristic value, the corresponding third compensation weight is the first compensation weight or the second compensation weight. Among them, in Figure 6 In , the third compensation weight is the first compensation weight; in Figure 7 , the third compensation weight is the second compensation weight.

[0064] S300 , obtaining a target compensation value of a target pixel unit based on a compensation reference value, a compensation coefficient, and a compensation weight of the target pixel unit at a target grayscale.

[0065] In step S300, based on the compensation reference value, compensation coefficient and compensation weight of the target pixel unit at the target grayscale, a target compensation value of the target pixel unit is calculated according to a preset algorithm.

[0066] In a possible implementation, based on the compensation reference value, compensation coefficient and compensation weight of the target pixel unit at the target grayscale, obtaining the target compensation value of the target pixel unit includes: performing a multiplication operation based on the compensation reference value, compensation coefficient and compensation weight of the target pixel unit at the target grayscale to obtain the target compensation value of the target pixel unit. That is: Target compensation value = compensation reference value Compensation coefficient Compensation Weight In one possible implementation, the compensation reference value The compensation coefficient is the initial compensation value corresponding to the target pixel unit. Therefore, the target compensation value = initial compensation value Compensation weight.

[0067] The compensation reference value in the above formula may be related to at least one of the DBV value, the grayscale, and the region where the pixel is located. In a possible implementation, the compensation reference value is related to the DBV value, the grayscale, and the region where the pixel is located; therefore, the compensation reference value of the target pixel unit at the target grayscale 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 the grayscale value is the target grayscale.

[0068] S400 , compensating a data voltage of a target pixel unit based on a target compensation value of the target pixel unit.

[0069] In step S400, after obtaining the target compensation value of the target pixel unit, the target compensation value is compensated on the basis of the original value of the output voltage Vdata to obtain the final output Vdata. That is, Vdata2=Vdata1+target compensation value. Among them, Vdata2 is the final output Vdata. Vdata1 is the original value of the data voltage, that is, the data voltage value before brightness compensation.

[0070] In the embodiment of the present application, the grayscale characteristic parameters of the pixels in the non-central area A1 are determined by comparing with the first compensation parameters of the central area A1, and the grayscale parameters can characterize the difference between the target pixel unit and the pixels in the central area A1. In view of this difference, the compensation weight of the compensation coefficient is determined. Different grayscale characteristic parameters correspond to different compensation weights, so that different target pixels have different target compensation values ​​at the target grayscale, thereby realizing regional compensation for the display panel 100, thereby improving the uniformity of the display brightness of the display panel 100.

[0071] The embodiment of the present application further provides a display driver chip, the display driver chip comprising: 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 include instructions, and when the instructions are executed by the display driver chip, the method provided in any of the aforementioned embodiments can be implemented.

[0072] In one embodiment of the present application, the display driver chip includes a memory, which stores the correspondence between the compensation reference value and the DBV value, the grayscale value, the correspondence between the compensation coefficient and the DBV value, the grayscale value, and the correspondence between the compensation weight and the grayscale characteristic parameter.

[0073] The embodiment of the present application further provides a display panel 100 , wherein a data voltage compensation method of the display panel 100 is a method provided by any of the aforementioned implementations, or the display panel 100 is driven by a display driver chip provided by any of the aforementioned embodiments.

[0074] like Figure 8 As shown, the present application further provides a display device 200 , comprising the display panel 100 provided in the aforementioned embodiment.

[0075] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A data voltage compensation method for a display panel, characterized in that: The display area of ​​the display panel includes a central area; The target pixel unit is located outside the central area; comprising: Acquire a grayscale characteristic parameter based on a first compensation parameter corresponding to the central area at a target grayscale and a second compensation parameter corresponding to the target pixel unit at the target grayscale; Based on the grayscale characteristic parameters, obtaining a compensation weight of the target pixel unit at the target grayscale; Acquire a target compensation value of the target pixel unit based on a compensation reference value, a compensation coefficient, and a compensation weight of the target pixel unit at a target grayscale; The data voltage of the target pixel unit is compensated based on the target compensation value of the target pixel unit.

2. The method according to claim 1, characterized in that The first compensation parameter is related to a corresponding compensation reference value.

3. The method according to claim 1, characterized in that 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 according to claim 3, characterized in that The display area of ​​the display panel also includes a first area to be compensated, and the target pixel unit is located in the first area to be compensated; the corresponding compensation reference value is the average value of the compensation reference values ​​of all the first pixel units in the first area to be compensated at the target grayscale; or the corresponding initial compensation value is the average value of the initial compensation values ​​of all the first pixel units in the first area to be compensated at the target grayscale; the color of the first pixel unit is the same as the color of the target pixel unit.

5. The method according to claim 3, characterized in that: The corresponding compensation reference value is the compensation reference value of the target pixel unit at a target grayscale; or the corresponding initial compensation value is the initial compensation value of the target pixel unit at a target grayscale.

6. The method according to claim 1, characterized in that Based on a first compensation parameter corresponding to the central area at a target grayscale and a second compensation parameter corresponding to the target pixel unit at the target grayscale, obtaining a grayscale characteristic parameter includes: A grayscale characteristic parameter is obtained by performing a division operation based on the first compensation parameter and the second compensation parameter.

7. The method according to claim 1, characterized in that The obtaining, based on the grayscale characteristic parameter, the compensation weight of the target pixel unit at the target grayscale comprises: Based on the grayscale characteristic parameters, according to the preset corresponding relationship between the grayscale characteristic parameters and the compensation weights, the compensation weight of the target pixel unit at the target grayscale is obtained.

8. The method according to claim 1, characterized in that The acquiring the target compensation value of the target pixel unit based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target grayscale comprises: A multiplication operation is performed based on the compensation reference value, the compensation coefficient and the compensation weight of the target pixel unit at the target grayscale to obtain a target compensation value of the target pixel unit.

9. A display panel, characterized in that: The data voltage compensation method for the display panel is the method according to any one of claims 1 to 8.

10. A display device, characterized in that: Comprising the display panel as claimed in claim 9.

Images