Brightness compensation coefficient configuration method, compensation method, display module and device

Abstract

The embodiment of the present application provides a configuration method, compensation method, display module and device for a brightness compensation coefficient. The configuration method includes: obtaining the number of preset DBV parameters to be configured in the chip, the number of preset DBV parameters being N; obtaining the node values ​​of N DBV nodes and the corresponding compensation coefficients and configuring them accordingly as the preset DBV parameters. Obtaining the node values ​​of N DBV nodes and the corresponding compensation coefficients includes: obtaining the node values ​​of N DBV nodes and the node values ​​of hidden nodes; the N DBV nodes include a first node and a second node, the node value of the first node is zero, the node value of the second node is greater than zero and less than the node values ​​of the remaining DBV nodes of the N DBV nodes; the node value of the hidden node is greater than the node value of the first node and less than the node value of the second node; obtaining the compensation coefficients corresponding to the second node and the hidden node; obtaining the compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node.

Description

Technical field

[0001] The present application relates to the field of display technology, and in particular to a configuration method for a brightness compensation coefficient, a compensation method, a display module, and a device. [Background Technology]

[0002] In order to eliminate the mura phenomenon of the display panel and improve the uniformity of the display panel's brightness, it is necessary to perform optical compensation on the display panel with mura. The display panel achieves optical compensation through the chip bound to it.

[0003] If the chip is capable of optically compensating the display panel, the chip's DBV (Display Brightness Value) nodes and corresponding compensation coefficients must be preconfigured. The chip then compensates the display panel based on the configured DBV nodes and corresponding compensation coefficients to eliminate mura. However, the number of DBV nodes currently configured on the chip often fails to meet actual customer needs, and increasing the number of DBV nodes by changing the chip's internal programming is too costly.

[0004] Application Contents

[0005] In view of this, the embodiments of the present application provide a configuration method of a brightness compensation coefficient, a compensation method, a display module, and a device to improve the problem that the existing chip configuration method cannot meet the actual needs of customers.

[0006] In a first aspect, an embodiment of the present application provides a method for configuring a brightness compensation coefficient, comprising the steps of:

[0007] Obtain the number of preset DBV parameters to be configured in the chip, where the number of preset DBV parameters is N;

[0008] Obtain the node values ​​of N DBV nodes and the compensation coefficient corresponding to each DBV node;

[0009] The node values ​​of N DBV nodes and the compensation coefficients corresponding to the DBV nodes are configured as preset DBV parameters;

[0010] The node values ​​of N DBV nodes and the compensation coefficients corresponding to each DBV node are obtained as follows:

[0011] Obtaining node values ​​of N DBV nodes and a node value of a hidden node; the N DBV nodes include a first node and a second node, the node value of the first node is zero, the node value of the second node is greater than zero and less than the node values ​​of the remaining DBV nodes of the N DBV nodes; the node value of the hidden node is greater than the node value of the first node and less than the node value of the second node;

[0012] Obtaining a compensation coefficient corresponding to the second node and a compensation coefficient corresponding to the hidden node;

[0013] Based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node, the compensation coefficient corresponding to the first node is obtained.

[0014] In an implementation of the first aspect, obtaining the node values ​​of N DBV nodes and the node value of a hidden node includes: obtaining the node values ​​of N DBV nodes and the node value of one hidden node.

[0015] In an implementation manner of the first aspect, a difference between a node value of the hidden node and a node value of the first node is smaller than a difference between a node value of the second node and a node value of the hidden node.

[0016] In an implementation of the first aspect, obtaining the compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node includes:

[0017] Determining a first functional relationship based on the node value of the second node, the compensation coefficient corresponding to the second node, and the node value of the hidden node, the compensation coefficient corresponding to the hidden node;

[0018] A compensation coefficient corresponding to the first node is determined according to the first functional relationship and the node value of the first node.

[0019] In an implementation manner of the first aspect, the first functional relationship is a linear functional relationship.

[0020] In an implementation of the first aspect, the preset DBV parameters include: a first preset parameter and a second preset parameter; and configuring the node values ​​of N DBV nodes and the compensation coefficients corresponding to the DBV nodes as the preset DBV parameters includes:

[0021] The node value of the first node and the compensation coefficient corresponding to the first node are configured as first preset parameters; the node value of the second node and the compensation coefficient corresponding to the second node are configured as second preset parameters;

[0022] The node values ​​and compensation coefficients included in the first preset parameters and the node values ​​and compensation coefficients included in the second preset parameters all satisfy a first functional relationship.

[0023] In an implementation of the first aspect, obtaining node values ​​of N DBV nodes and node values ​​of hidden nodes includes:

[0024] Get the node values ​​of N DBV nodes and the node values ​​of at least 2 hidden nodes;

[0025] The first functional relationship is determined based on the node value of the second node, the compensation coefficient corresponding to the second node, the node value of the hidden node, and the compensation coefficient corresponding to the hidden node, including a linear regression processing step, which includes:

[0026] The second node value and the node values ​​of all hidden nodes are used as independent variables, and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node are used as dependent variables. Linear regression processing is performed to obtain a linear regression function, which is the first functional relationship.

[0027] In one implementation of the first aspect, before the step of performing linear regression processing using the second node value and the node values ​​of all hidden nodes as independent variables and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables, the method further includes:

[0028] Based on the linear function, the node value of the second node and the node value of any hidden node are used as independent variables, and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node are used as dependent variables to obtain the first sub-function relationship; repeat this step until the linear function between the second node and all hidden nodes is covered, and the first sub-function relationship set is obtained;

[0029] Obtain the number m of first sub-function relationships with the highest repetition frequency in the first sub-function set;

[0030] When m is greater than or equal to 2, the linear regression processing step is performed.

[0031] In an implementation of the first aspect, after the step of obtaining the intermediate sub-function relationship, the method further includes: when m=1, determining a compensation coefficient corresponding to the first node according to the first functional relationship and the node value of the first node.

[0032] In a second aspect, an embodiment of the present application provides a brightness compensation method, comprising the steps of:

[0033] Obtaining compensation data and a compensation coefficient, where the compensation data is obtained based on image data of the display panel and a compensation algorithm, and the compensation coefficient is obtained by the brightness compensation coefficient configuration method of the first aspect;

[0034] Brightness compensation is performed on the display panel based on the compensation data and the compensation coefficient.

[0035] In a third aspect, an embodiment of the present application provides a display module, comprising a display panel and a chip, wherein the chip is bound to the display panel: the preset DBV parameters to be configured of the chip are configured through the brightness compensation coefficient configuration method of the first aspect to achieve brightness compensation for the display panel; and / or, the chip performs brightness compensation on the display panel through the brightness compensation method of the second aspect.

[0036] In a fourth aspect, an embodiment of the present application provides a display device comprising the display module of the third aspect of claim 1.

[0037] In this embodiment of the present application, the compensation coefficient corresponding to the first node is obtained based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node, thereby ensuring that the compensation coefficient corresponding to the first node is configured for the chip. Unlike the existing default setting, the compensation coefficient corresponding to DBV = 0 in this application is obtained based on the node values ​​and corresponding compensation coefficients of the hidden node and the second node, thereby increasing the utilization rate of the DBV = 0 node. At the same time, when the chip performs optical compensation on the display panel, the compensation coefficient for the hidden node derived by the chip based on the compensation coefficients of the first and second nodes is more accurate and better meets the actual needs of customers.

Brief Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0039] Figure 1 A flowchart of a method for configuring a brightness compensation coefficient provided in an embodiment of the present application;

[0040] Figure 2 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes provided in an embodiment of the present application;

[0041] Figure 3 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of an embodiment of the present application providing a method for performing linear calculation based on the node values ​​of a second node and a hidden node and the compensation coefficient to obtain a compensation coefficient corresponding to a first node;

[0043] Figure 5 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes provided in an embodiment of the present application;

[0044] Figure 6 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes provided in an embodiment of the present application;

[0045] Figure 7A flowchart of a brightness compensation method provided in an embodiment of the present application;

[0046] Figure 8 A flowchart for obtaining compensation data provided in an embodiment of the present application;

[0047] Figure 9 A structural diagram of a display module provided in an embodiment of the present application;

[0048] Figure 10 A structural diagram of a display device provided in an embodiment of the present application.

[0049] Description of labels

[0050] 100. Display module; 101. Display panel; 102. Chip; 200. Display device. [Specific implementation method]

[0051] 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.

[0052] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0053] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" 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 otherwise.

[0054] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0055] In the description of this specification, it is necessary to understand that the words "substantially", "approximately", "approximately", "about", "roughly", "generally" and the like described in the claims and embodiments of this application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0056] It should be understood that although the terms first, second, third, etc. may be used to describe nodes, etc. in the embodiments of the present application, these nodes, etc. should not be limited to these terms. These terms are only used to distinguish nodes, etc. from each other. For example, without departing from the scope of the embodiments of the present application, a first node may also be referred to as a second node, and similarly, a second node may also be referred to as a first node.

[0057] The applicant in this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0058] The inventors discovered that in a chip used to drive a display panel, the preset DBV parameters to be configured include a node with DBV = 0, and the compensation coefficient corresponding to the existing node with DBV = 0 is the default configuration. Furthermore, among the chip's preset DBV nodes, the compensation coefficients corresponding to adjacent DBV nodes are functions of the node values ​​corresponding to those adjacent DBV nodes that are preset within the chip's internal system (e.g., a linear function). It should be noted that changes to the compensation coefficients corresponding to the node with DBV = 0 do not affect the display brightness of the display panel.

[0059] Figure 1 A flowchart of a method for configuring a brightness compensation coefficient provided in an embodiment of the present application; Figure 2 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes is provided in an embodiment of the present application.

[0060] See also Figures 1 to 2 , an embodiment of the present application provides a method for configuring a brightness compensation coefficient, comprising the steps of:

[0061] The number of preset DBV parameters to be configured in the chip is obtained, where the number of preset DBV parameters is N.

[0062] Obtain the node values ​​of N DBV nodes and the compensation coefficients corresponding to each DBV node. The N DBV nodes in this step include a first node and a second node. The node value of the first node is zero, and the node value of the second node is greater than zero and less than the node values ​​of the remaining N DBV nodes. The node value of the hidden node is greater than the node value of the first node and less than the node value of the second node. This step includes: obtaining the node values ​​of the N DBV nodes and the node value of the hidden node; obtaining the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node; and obtaining the compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node.

[0063] The step of obtaining the compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node includes: determining a first functional relationship based on the node value of the second node, the compensation coefficient corresponding to the second node, the node value of the hidden node, and the compensation coefficient corresponding to the hidden node; and determining the compensation coefficient corresponding to the first node based on the first functional relationship and the node value of the first node. That is, the node value and compensation coefficient of the first node, the node value and compensation coefficient of the second node, and the node value and compensation coefficient of the hidden node satisfy the same first functional relationship.

[0064] The acquisition of the compensation coefficient corresponding to a certain DBV node or hidden node (i.e., a DBV node or hidden node with a known node value) in the embodiment of the present application is any implementation method known to those skilled in the art or feasible in the prior art. It should be noted that when data processing is performed between different DBV nodes and their corresponding compensation coefficients described in the embodiment of the present application, the other relevant parameters (such as frequency) are the same. For example, since the brightness compensation coefficient is also related to the frequency, the compensation coefficient corresponding to a certain DBV node is not necessarily a single value, but can be a set consisting of several values. Based on this, when configuring the chip, it is only necessary to configure it according to the chip configuration method. For example, the configuration method of a certain chip is a one-dimensional configuration table (DBV node and corresponding compensation coefficient), that is, at a uniform frequency, DBV node and corresponding compensation coefficient. For another example, the configuration method of a certain chip is a two-dimensional configuration table (DBV node and frequency). In this case, it means that when the other relevant parameters are the same, the compensation coefficient is the compensation coefficient corresponding to the DBV node at a certain frequency. When the chip configuration method is a multi-dimensional configuration table, the same applies and will not be repeated here.

[0065] In an embodiment of the present application, the function type of the first functional relationship (function types include: linear function, multi-time function (including quadratic function), inverse proportional function and other types of functions, etc.) is consistent with the function type of the compensation coefficient in the chip with respect to the DBV node value. Here, the independent variable of the function of the compensation coefficient in the chip with respect to the DBV node value is the DBV node value, and the dependent variable is the compensation coefficient corresponding to the DBV node value. It can be understood that in the process of determining the first functional relationship in this embodiment, it is necessary to use the function type of the compensation coefficient in the chip with respect to the DBV node value, the BDV node value as the independent variable, the compensation coefficient as the dependent variable, and the node value of the hidden node, the second node and the corresponding compensation coefficient to obtain the first functional relationship.

[0066] Figure 3 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes provided in an embodiment of the present application; Figure 4A schematic diagram of an embodiment of the present application for performing linear calculation based on the node values ​​and compensation coefficients of the second node and the hidden node to obtain the compensation coefficient corresponding to the first node.

[0067] See also Figure 3 In one embodiment of the present application, obtaining the node values ​​of N DBV nodes and the node value of a hidden node includes: obtaining the node values ​​of N DBV nodes and the node value of 1 hidden node. Figure 4 Taking the first functional relationship as a linear functional relationship as an example, the node value of the hidden node and the node value of the second node are used as independent variables, and the compensation coefficient corresponding to the hidden node and the compensation coefficient corresponding to the second node are used as dependent variables. Two points are used to confirm a straight line to determine the first functional relationship.

[0068] In one technical solution of this embodiment, the difference between the node value of the hidden node and the node value of the first node is smaller than the difference between the node value of the second node and the node value of the hidden node. The node value of the hidden node is closer to the node value of the first node than to the node value of the second node. Because the node value of the hidden node is closer to the node value of the first node, the linear relationship between the compensation coefficient corresponding to the first node and the compensation coefficient of the hidden node in the derived first functional relationship is more accurate.

[0069] Figure 5 A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes is provided in an embodiment of the present application.

[0070] See also Figure 5 In one embodiment of the present application, obtaining node values ​​of N DBV nodes and node values ​​of hidden nodes includes obtaining node values ​​of N DBV nodes and node values ​​of at least two hidden nodes. In this embodiment, determining a first functional relationship based on the node value of a second node, the compensation coefficient corresponding to the second node, and the node value of the hidden node and the compensation coefficient corresponding to the hidden node includes a linear regression processing step. The linear regression processing step includes performing a linear regression process using the second node value and the node values ​​of all hidden nodes as independent variables and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables to obtain a linear regression function. The linear regression function is the first functional relationship.

[0071] Taking the linear function relationship of the compensation coefficient within the chip with respect to the DBV node value as an example, when the number of hidden nodes is greater than or equal to 2, it cannot be guaranteed that all hidden nodes and the second node are located on the same straight line. The linear regression function can give a reasonable distribution relationship between multiple hidden nodes and the second node, which can effectively improve the accuracy of the compensation coefficient between the first node and the second node.

[0072] Figure 6A flowchart for obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to each of the DBV nodes is provided in an embodiment of the present application.

[0073] See also Figure 6 In one embodiment of the present application, before performing the linear regression process using the second node value and the node values ​​of all hidden nodes as independent variables and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables, the following steps are further included:

[0074] Based on the linear function, the node value of the second node and the node value of any hidden node are used as independent variables, and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node are used as dependent variables to obtain the first sub-function relationship; repeat this step until the linear function between the second node and all hidden nodes is covered, and the first sub-function relationship set is obtained.

[0075] Obtain the number m of first sub-function relationships with the highest repetition frequency in the first sub-function set; that is, in the first sub-function set, there are m first sub-function relationships with the highest repetition frequency, and these m first sub-function relationships are all different. m is a positive integer greater than or equal to 1. For example, if the highest repetition frequency is 4 times, and the number of first sub-function relationships with 4 repetitions is 3, then there are 3 different sub-function relationships in the first sub-function set, and these 3 different sub-function relationships each appear 4 times.

[0076] When m = 1, the compensation coefficient corresponding to the first node is determined based on the first functional relationship and the node value of the first node. When m = 1, the first sub-functional relationship with the highest repetition frequency is used as the first functional relationship. This means that when m = 1, all hidden nodes and the second node are located on the same straight line, with DBV as the horizontal axis and the compensation coefficient as the vertical axis.

[0077] When m is greater than or equal to 2, the linear regression processing step is performed. It can be understood that when m is greater than or equal to 2, it means that there are at least two first sub-functions with the highest repetition frequency in the first sub-function set. Therefore, the first functional relationship cannot be determined simply by the highest repetition frequency feature. Therefore, the linear regression processing step is required to confirm the first functional relationship.

[0078] The node values ​​of N DBV nodes and the compensation coefficients corresponding to each DBV node are configured as preset DBV parameters. The preset DBV parameters include: a first preset parameter and a second preset parameter. This step includes: configuring the node value of the first node and the compensation coefficient corresponding to the first node as the first preset parameter; and configuring the node value of the second node and the compensation coefficient corresponding to the second node as the second preset parameter. The node values ​​and compensation coefficients included in the first preset parameter and the node values ​​and compensation coefficients included in the second preset parameter all satisfy a first functional relationship. The DBV parameters include: DBV node values ​​and corresponding compensation coefficients. Specifically, the node value of the first node is zero, and the DBV node value of the first preset parameter is zero; the compensation coefficient corresponding to the first node is configured as the compensation coefficient of the first preset parameter; the node value of the second node is configured as the DBV node value of the second preset parameter, and the compensation coefficient corresponding to the second node is configured as the compensation coefficient of the second preset parameter; and so on. The node values ​​of the remaining DBV nodes in the N DBV nodes and their corresponding compensation coefficients are configured one-to-one to the remaining DBV parameters of the preset DBV parameters.

[0079] In the configuration method provided in the embodiment of the present application, the compensation coefficient of the first preset parameter in the chip is inferred based on the compensation coefficient corresponding to the second node, the compensation coefficient corresponding to the hidden node, and the function type of the compensation coefficient preset in the chip with respect to the DBV node value, thereby ensuring that after the compensation coefficients corresponding to the first node and the second node are configured to the chip, when the chip performs optical compensation on the display panel, the compensation coefficient corresponding to the node value of the hidden node is an accurate value (when the hidden node is one node, or multiple hidden nodes are on a straight line) or a relatively accurate value (when the first function relationship is obtained by linear regression processing or is the first sub-function relationship with the highest repetition frequency). Therefore, unlike the existing default settings, the compensation coefficient corresponding to DBV=0 in the present application is obtained based on the node values ​​and corresponding compensation coefficients of the hidden node and the second node, thereby increasing the utilization rate of the DBV=0 node. At the same time, when the chip performs optical compensation on the display panel, the compensation coefficient of the hidden node obtained by the chip based on the compensation coefficients of the first node and the second node is more accurate and can better meet the actual needs of customers.

[0080] Figure 7 A flowchart of a brightness compensation method provided in an embodiment of the present application;

[0081] See also Figure 7 , the embodiment of the present application also provides a brightness compensation method, comprising the steps of:

[0082] Obtain compensation data and compensation coefficients. The compensation data is obtained based on the image data of the display panel and a compensation algorithm. The compensation coefficients are obtained using the brightness compensation coefficient configuration method of the first aspect. The compensation data is derived using a compensation algorithm preset within the chip. The chip includes a driver chip and a flash memory chip.

[0083] Figure 8 A flowchart for obtaining compensation data provided in an embodiment of the present application.

[0084] See also Figure 8 It should be noted that the compensation data in this step is obtained based on existing technology. The specific implementation process includes but is not limited to: the control terminal controls the display panel sample to display different target camera images and controls the image acquisition device to capture images; the control terminal generates image data information based on the images captured by the image acquisition device, and the image data information includes image brightness data; and the compensation data is obtained based on the image data information and the compensation algorithm within the chip. The control terminal controls the driver chip to initialize the flash memory chip. The initialization process includes an erase process to erase the data previously stored in the flash memory chip. After the initialization process, the control terminal controls the driver chip to burn the compensation coefficients and compensation data into the flash memory chip, so that the driver chip can mobilize the compensation coefficients and compensation data in the flash memory chip to perform optical compensation on the display panel. Among them, different target camera images include but are not limited to different grayscale images.

[0085] The display panel is compensated for brightness based on the compensation data and the compensation coefficient. It can be understood that during the optical compensation process, the driver chip compensates the display panel by multiplying the compensation coefficient with the corresponding compensation data to achieve the effect of eliminating the mura phenomenon.

[0086] The brightness compensation method provided by the present application is such that, since the change of the compensation coefficient of the first node will not affect the compensation effect, the node value of the first node (the node with DBV=0) and the corresponding compensation coefficient are inferred by the function type of the second node, the hidden node and the compensation coefficient preset in the chip with respect to the DBV node value. Therefore, after the first preset parameter of the chip is configured as the node value of the first node and the corresponding compensation coefficient, when the chip optically compensates the display panel, the compensation coefficient for optically compensating the display panel at the node value of the hidden node is a precise value (when the hidden node is one node, or multiple hidden nodes are on a straight line) or a relatively accurate value (when the first functional relationship is obtained by linear regression processing or is the first sub-function relationship with the highest repetition frequency).

[0087] In summary, the optical compensation method provided in the embodiment of the present application can improve the utilization rate of the chip's DBV=0 node based on an existing chip, thereby obtaining compensation coefficients corresponding to hidden nodes. When a customer's requirement for the number of DBV nodes exceeds the chip's preset number of DBV nodes, the excess DBV nodes (the excess DBV nodes are the customer's required DBV nodes minus the chip's preset DBV nodes, and the number of excess DBV nodes is the customer's required DBV nodes minus the chip's preset DBV nodes) can be set as hidden nodes in the embodiment of the present application. When the chip performs optical compensation on the display panel, the compensation coefficients corresponding to the hidden nodes are the compensation coefficients corresponding to the excess DBV nodes, and the compensation coefficients are accurate or relatively accurate values. Therefore, when the chip follows the function type of the internally preset compensation coefficients with respect to the DBV node values, the compensation coefficients corresponding to the hidden nodes can be obtained as accurate or relatively accurate values. This solves the problem of a customer's requirement for the number of DBV nodes exceeding the chip's internally preset requirement for the number of DBV nodes.

[0088] Figure 9 A structural diagram of a display module provided in an embodiment of the present application.

[0089] See also Figure 9 , an embodiment of the present application also provides a display module 100, including a display panel 101 and a chip 102, wherein the chip 102 is bound to the display panel 101: the preset DBV parameters to be configured of the chip 102 are configured through the brightness compensation coefficient configuration method of the first aspect to achieve brightness compensation for the display panel 101; and / or, the chip 102 performs brightness compensation on the display panel 101 through the brightness compensation method of the second aspect.

[0090] In the display module 100 provided in the embodiment of the present application, since the change of the compensation coefficient of the first node will not affect the compensation effect, the node value of the first node (the node with DBV=0) and the corresponding compensation coefficient are inferred by the function type of the second node, the hidden node and the compensation coefficient preset in the chip 102 with respect to the DBV node value. Therefore, after the first preset parameter of the chip 102 is configured as the node value of the first node and the corresponding compensation coefficient, when the chip 102 optically compensates the display panel 101, the compensation coefficient for optically compensating the display panel 101 at the node value of the hidden node is a precise (when the hidden node is one node, or multiple hidden nodes are on a straight line) or relatively accurate (when the first functional relationship is obtained by linear regression processing or is the first sub-function relationship with the highest repetition frequency) value. When the customer's requirement for the number of DBV nodes exceeds the number of DBV nodes preset in chip 102, the redundant DBV nodes (the redundant DBV nodes are the DBV nodes required by the customer minus the DBV nodes preset in chip 102, and the number of redundant DBV nodes is the number of DBV nodes required by the customer minus the number of DBV nodes preset in chip 102) can be set as hidden nodes in the embodiment of the present application. When chip 102 performs optical compensation on display panel 101, the compensation coefficients corresponding to the hidden nodes are the compensation coefficients corresponding to the redundant DBV nodes, and the compensation coefficients are accurate or relatively accurate values. Therefore, when chip 102 uses the function type of the internally preset compensation coefficients with respect to the DBV node values, it can derive the compensation coefficients corresponding to the hidden nodes as accurate or relatively accurate values. This solves the problem of the customer's requirement for the number of DBV nodes exceeding the requirement for the number of DBV nodes preset in chip 102.

[0091] Figure 10 A structural diagram of a display device provided in an embodiment of the present application.

[0092] See also Figure 10, the embodiment of the present application also provides a display device 200, including the display module 100 in the aforementioned embodiment. The display device 200 can be an electronic product such as a mobile phone, a computer, a television, a PDA, etc. In the display device 200 provided in the embodiment of the present application, based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node, the compensation coefficient corresponding to the first node is obtained, so that it can be ensured that after the compensation coefficients corresponding to the first node and the second node are configured to the chip 102, when the chip 102 performs optical compensation on the display panel 101, the compensation coefficient corresponding to the node value of the hidden node is an accurate value (when the hidden node is one node, or multiple hidden nodes are on a straight line) or a relatively accurate value (when the first functional relationship is obtained by linear regression processing or is the first sub-function relationship with the highest repetition frequency). Different from the existing default setting, the compensation coefficient corresponding to DBV=0 in the present application is obtained based on the node values ​​of the hidden node and the second node and the corresponding compensation coefficients, thereby increasing the utilization rate of the DBV=0 node. At the same time, when the chip 102 performs optical compensation on the display panel 101, the chip 102 can obtain a more accurate compensation coefficient of the hidden node based on the compensation coefficients of the first node and the second node, which can better meet the actual needs of customers.

[0093] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for configuring a brightness compensation coefficient, characterized in that: Including steps: Obtaining the number of preset DBV parameters to be configured in the chip, where the number of preset DBV parameters is N; Obtaining node values ​​of N DBV nodes and compensation coefficients corresponding to the DBV nodes; Configuring the node values ​​of N DBV nodes and the compensation coefficients corresponding to the DBV nodes as the preset DBV parameters; The step of obtaining the node values ​​of N DBV nodes and the compensation coefficient corresponding to each of the DBV nodes includes: Obtaining node values ​​of N DBV nodes and a node value of a hidden node; the N DBV nodes include a first node and a second node, the node value of the first node is zero, the node value of the second node is greater than zero and less than the node values ​​of the remaining DBV nodes in the N DBV nodes except the first node and the second node; the node value of the hidden node is greater than the node value of the first node and less than the node value of the second node; Obtaining a compensation coefficient corresponding to the second node and a compensation coefficient corresponding to the hidden node; Obtaining a compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node; The step of obtaining the compensation coefficient corresponding to the first node based on the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the hidden node includes: Determining a first functional relationship based on the node value of the second node, the compensation coefficient corresponding to the second node, and the node value of the hidden node, the compensation coefficient corresponding to the hidden node; A compensation coefficient corresponding to the first node is determined according to the first functional relationship and the node value of the first node.

2. The method for configuring brightness compensation coefficients according to claim 1, wherein: The step of obtaining the node values ​​of N DBV nodes and the node values ​​of hidden nodes includes: Obtain node values ​​of N of the DBV nodes and a node value of one of the hidden nodes.

3. The method for configuring brightness compensation coefficients according to claim 2, wherein: A difference between the node value of the hidden node and the node value of the first node is smaller than a difference between the node value of the second node and the node value of the hidden node.

4. The method for configuring brightness compensation coefficients according to claim 1, wherein: The first functional relationship is a linear functional relationship.

5. The method for configuring brightness compensation coefficients according to claim 1, wherein: The preset DBV parameters include: a first preset parameter and a second preset parameter; the configuration of the node values ​​of N DBV nodes and the compensation coefficients corresponding to the DBV nodes as the preset DBV parameters includes: The node value of the first node and the compensation coefficient corresponding to the first node are configured as the first preset parameters; the node value of the second node and the compensation coefficient corresponding to the second node are configured as the second preset parameters; The node values ​​and compensation coefficients included in the first preset parameters and the node values ​​and compensation coefficients included in the second preset parameters all satisfy the first functional relationship.

6. The method for configuring brightness compensation coefficients according to claim 1, wherein: The step of obtaining the node values ​​of N DBV nodes and the node values ​​of hidden nodes includes: Obtaining node values ​​of N of the DBV nodes and node values ​​of at least two of the hidden nodes; Determining the first functional relationship based on the node value of the second node, the compensation coefficient corresponding to the second node, the node value of the hidden node, and the compensation coefficient corresponding to the hidden node includes a linear regression processing step, and the linear regression processing step includes: Linear regression processing is performed with the node value of the second node and the node values ​​of all hidden nodes as independent variables, and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables to obtain a linear regression function, which is a first functional relationship.

7. The method for configuring brightness compensation coefficients according to claim 6, wherein: Before the step of performing linear regression processing with the node value of the second node and the node values ​​of all hidden nodes as independent variables and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables, the step further includes: Based on a linear function, a first sub-function relationship is obtained, with the node value of the second node and the node value of any hidden node as independent variables, and the compensation coefficient corresponding to the second node and the compensation coefficient corresponding to the corresponding hidden node as dependent variables; this step is repeated until a linear function is found between the second node and all hidden nodes, thereby obtaining a first sub-function relationship set; Obtain the number m of first sub-function relationships with the highest repetition frequency in the first sub-function set; When m is greater than or equal to 2, the linear regression processing step is performed.

8. The method for configuring brightness compensation coefficients according to claim 7, wherein: After the step of obtaining the number m of first sub-function relationships with the highest repetition frequency in the first sub-function set, the step also includes: when m=1, determining the compensation coefficient corresponding to the first node based on the first functional relationship and the node value of the first node; wherein, when m=1, the first sub-function relationship with the highest repetition frequency is taken as the first functional relationship.

9. A brightness compensation method, characterized in that: Including steps: Obtaining compensation data and a compensation coefficient, wherein the compensation data is obtained based on image data of the display panel and a compensation algorithm, and the compensation coefficient is obtained by the configuration method of the brightness compensation coefficient according to any one of claims 1 to 8; Brightness compensation is performed on the display panel based on the compensation data and the compensation coefficient.

10. A display module, characterized in that: It includes a display panel and a chip, wherein the chip is bound to the display panel: The preset DBV parameters to be configured of the chip are configured by the brightness compensation coefficient configuration method described in any one of claims 1-8 to achieve brightness compensation for the display panel; and / or, the chip performs brightness compensation on the display panel by the brightness compensation method described in claim 9.

11. A display device, characterized in that: Including the display module according to claim 10.

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