Display panel backlight adjustment method, device and computer equipment

Abstract

This application discloses a method, apparatus, and computer device for adjusting the backlight of a display panel. This application first identifies a target area, whose backlight brightness meets a set condition, from among multiple backlight areas of the display panel. Then, based on the backlight brightness of a first adjacent backlight area to the target area, an area to be adjusted is determined from the first adjacent backlight area. Finally, the backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameters corresponding to the area to be adjusted. This expands the application scope of halo optimization for display panels, thereby improving the halo optimization effect of display panels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a backlight adjustment method and device for a display panel, and a computer device. Background Art

[0002] Typically, Micro Light Emitting Diode (MLED) products can dynamically adjust the backlight brightness to achieve ultra-high contrast on the screen through a local dimming (LD) algorithm. During the display process, the light emitted by a certain backlight area will not be completely confined to the partition where it is located, but will diffuse to the surroundings in a certain form, commonly known as light diffusion. Due to the influence of light diffusion, in areas with large brightness differences in the picture, the light diffusion effect generated by the backlight will cause the brightness of areas with low or turned-off backlight brightness to be raised, thereby generating a halo and reducing the picture display effect. Traditional halo optimization methods can improve the subjective effect by reducing the backlight brightness in the area where the halo is located. However, since the backlight brightness of the pure black area is 0 and cannot be further reduced, the traditional halo optimization method cannot be applied to halo optimization in pure black areas. Summary of the Invention

[0003] The purpose of this application is to provide a backlight adjustment method, device and computer equipment for a display panel to solve the problem that traditional halo optimization methods have limitations.

[0004] In order to achieve the above-mentioned objectives, the present application provides, in a first aspect, a backlight adjustment method for a display panel, comprising:

[0005] Acquire a target area where the backlight brightness reaches a set condition from multiple backlight areas of the display panel;

[0006] determining an area to be adjusted from the first adjacent backlight area according to the backlight brightness of the first adjacent backlight area of ​​the target area;

[0007] The backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameter corresponding to the area to be adjusted.

[0008] In the embodiment of the present application, obtaining a target area where the backlight brightness reaches a set condition from multiple backlight areas of the display panel includes:

[0009] A backlight area whose backlight brightness is less than or equal to a set brightness threshold among the multiple backlight areas is determined as a target area.

[0010] In the embodiment of the present application, determining the area to be adjusted from the first adjacent backlight area according to the backlight brightness of the first adjacent backlight area of ​​the target area includes:

[0011] Determine a first adjacent backlight area whose backlight brightness is greater than the backlight brightness of the target area as a candidate area to be adjusted;

[0012] Determine a comparison area consisting of the candidate area to be adjusted and a second adjacent backlight area, where the second adjacent backlight area is an adjacent backlight area of ​​the candidate area to be adjusted, and the second adjacent backlight area includes the target area;

[0013] Determine whether the backlight brightness of the candidate area to be adjusted is the maximum backlight brightness in the comparison area;

[0014] If the backlight brightness of the candidate area to be adjusted is not the maximum backlight brightness in the comparison area, the candidate area to be adjusted is determined as the area to be adjusted.

[0015] In an embodiment of the present application, the method further includes:

[0016] determining the backlight area with the largest backlight brightness in the second adjacent backlight area as the target adjacent area;

[0017] Obtain the brightness difference and relative position information between the area to be adjusted and the adjacent area of ​​the target;

[0018] The target adjustment parameters are determined according to the brightness difference and relative position information.

[0019] In the embodiment of the present application, determining the target adjustment parameter according to the brightness difference and the relative position information includes:

[0020] The brightness difference and relative position information are input into the target model to obtain the target adjustment parameters.

[0021] In an embodiment of the present application, the method further includes:

[0022] Acquire a sample training set, the sample training set including a plurality of training samples, the training samples including a sample backlight area identifier and a calibration parameter corresponding to the sample backlight area identifier, the sample backlight area including a first sample area and a second sample area;

[0023] Input the training samples into the model to be trained to obtain the prediction parameters;

[0024] The training model is iteratively updated according to the prediction parameters and calibration parameters until the convergence condition of the model training is reached to obtain the target model.

[0025] In an embodiment of the present application, determining the target adjustment parameter according to the brightness difference and the relative position information includes:

[0026] The pre-built mapping table is queried according to the brightness difference and relative position information to obtain the target adjustment parameters.

[0027] In the embodiment of the present application, adjusting the backlight brightness of the area to be adjusted based on the target adjustment parameter corresponding to the area to be adjusted includes:

[0028] Get the initial backlight brightness of the area to be adjusted;

[0029] Calculating the target backlight brightness of the area to be adjusted based on the initial backlight brightness, brightness difference, and target adjustment parameter of the area to be adjusted;

[0030] Adjust the backlight brightness of the area to be adjusted from the initial backlight brightness to the target backlight brightness.

[0031] In the embodiment of the present application, the first adjacent backlight area includes a plurality of areas to be adjusted, and adjusting the backlight brightness of the areas to be adjusted based on target adjustment parameters corresponding to the areas to be adjusted includes:

[0032] Set an adjustment coefficient for each area to be adjusted;

[0033] The multiple areas to be adjusted are adjusted based on the adjustment coefficient and target adjustment parameter of each area to be adjusted.

[0034] A second aspect of the present application provides a backlight adjustment device for a display panel, comprising:

[0035] An acquisition module, configured to acquire a target area whose backlight brightness meets a set condition from a plurality of backlight areas of the display panel;

[0036] A determination module, configured to determine an area to be adjusted from the first adjacent backlight area according to the backlight brightness of the first adjacent backlight area of ​​the target area;

[0037] The adjustment module is configured to adjust the backlight brightness of the area to be adjusted based on a target adjustment parameter corresponding to the area to be adjusted.

[0038] A third aspect of the present application provides a computer device, comprising the above-mentioned backlight adjustment device for a display panel, wherein the backlight adjustment device for a display panel comprises:

[0039] a memory configured to store instructions; and

[0040] The processor is configured to call instructions from the memory and implement the above-mentioned backlight adjustment method of the display panel when executing the instructions.

[0041] In summary, by adopting the solution of the present application, a target area whose backlight brightness reaches the set conditions is first obtained from multiple backlight areas of the display panel. Then, an area to be adjusted is determined from the first adjacent backlight area according to the backlight brightness of the first adjacent backlight area of ​​the target area. Finally, the backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameters corresponding to the area to be adjusted. In this way, the area to be adjusted is selected from the first adjacent backlight area of ​​the target area, and the backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameters, rather than directly adjusting the target area. In this way, the halo optimization of the display panel can be performed even when the target area is a pure black area, which expands the application scope of the halo optimization of the display panel, thereby improving the halo optimization effect of the display panel.

[0042] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic flow chart of a backlight adjustment method for a display panel provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of partitioning a local area of ​​a display panel provided in an embodiment of the present application;

[0046] Figure 3 is a schematic diagram of the light diffusion effect of an unadjusted front display panel provided in an embodiment of the present application;

[0047] Figure 4 is a schematic diagram of the light diffusion effect of a display panel after adjustment provided in an embodiment of the present application;

[0048] Figure 5a-5c A schematic diagram of the relative positions of backlight areas provided in an embodiment of the present application;

[0049] Figure 6 This is a schematic structural diagram of a backlight adjustment device for a display panel provided in an embodiment of the present application;

[0050] Figure 7 This is a structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, 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 those skilled in the art without making creative efforts are within the scope of protection of this application.

[0052] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically qualified. In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is provided to enable anyone skilled in the art to implement and use the present application. In the following description, details are listed for illustrative purposes. It should be understood that one of ordinary skill in the art will recognize that the present application can be implemented without these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0053] During the display process of the display panel, the contrast of the displayed image will be reduced due to the influence of light diffusion. Take the display panel including two adjacent backlight areas A and B as an example, assuming that the luminance of A and B are X and Y respectively. Since the shape of light diffusion is usually symmetrical about the center, the backlight brightness x of the backlight diffusion from backlight area A to backlight area B and the backlight brightness y of the backlight diffusion from backlight area B to backlight area A satisfy: x / X=y / Y=t, t is the ratio of the diffusion brightness to the backlight area brightness. If the influence of light diffusion is not considered, the backlight contrast ratio ra of backlight area A and backlight area B is ra_new=(X+y) / (Y+x)=(ra+t) / (ra×t+1). It can be obtained that when the backlight brightness of backlight area A and backlight area B is equal, that is, ra is 1, the backlight contrast ratio after diffusion remains unchanged and is still 1, and there is no halo effect at this time. When the backlight brightness of backlight area A is not equal to that of backlight area B, ra_new will be closer to 1 than ra, that is, the backlight contrast shows a downward trend, that is, the effect of halo. Therefore, when the backlight brightness of backlight area A and backlight area B is 0, increasing the brightness difference between backlight area A and backlight area B can enhance the contrast. However, when the backlight brightness of any one of backlight area A and backlight area B is 0, the halo effect can only be improved by reducing the brightness of the backlight area whose backlight brightness is not 0. Based on this, the embodiment of the present application does not directly adjust the target area such as the backlight area with a backlight brightness of 0, but determines the area to be adjusted in the first adjacent backlight area of ​​the target area, and improves the halo effect of the target area by adjusting the backlight brightness of the area to be adjusted. In this way, halo optimization can be performed for any backlight area that needs to improve the halo effect, thereby improving the limitations of halo optimization in the display panel.

[0054] See also Figure 1 , Figure 1 10. A flow chart of a backlight adjustment method for a display panel provided in an embodiment of the present application. In an embodiment of the present application, a backlight adjustment method for a display panel is provided, which may include steps 101-103, etc., which are described in detail below.

[0055] Step 101: Acquire a target area whose backlight brightness meets a set condition from multiple backlight areas of a display panel.

[0056] In an embodiment of the present application, the target area refers to an area that needs to be halo optimized, and the setting conditions can be set based on actual conditions. In one example, if the target area needs to be determined as an area with lower backlight brightness, a lower brightness threshold can be set as the set brightness threshold, and the backlight area in the display panel with backlight brightness less than or equal to the set brightness threshold is determined as the target area. For example, if the set brightness threshold is determined to be 0, a backlight area with a backlight brightness of 0 can be searched for in multiple backlight areas, and the backlight area with a backlight brightness of 0 is determined as the target area. Among them, the set brightness threshold can also be other values, such as 5, 10, 15, etc., which is not limited in this embodiment.

[0057] Step 102: Determine an area to be adjusted from the first adjacent backlight area according to the backlight brightness of the first adjacent backlight area of ​​the target area.

[0058] In an embodiment of the present application, the first adjacent backlight area is an adjacent backlight area of ​​the target area, and the range of the first adjacent backlight area can be set based on demand, for example, it can be set to 8 neighborhoods or 24 neighborhoods of the target area, etc. The area to be adjusted is the backlight area in the first adjacent backlight area that can improve the halo effect of the target area by adjusting the backlight brightness. Due to the limitation of the maximum backlight brightness of the display panel, when a certain backlight area has the maximum backlight brightness of the backlight area and its adjacent backlight areas, the backlight area cannot be changed, and the halo is most serious in areas with obvious changes in brightness. Therefore, the area to be adjusted needs to meet the backlight brightness that is not 0 and not the maximum backlight brightness, so that the backlight brightness of the backlight area can be adjusted.

[0059] Step 103: Adjust the backlight brightness of the area to be adjusted based on the target adjustment parameter corresponding to the area to be adjusted.

[0060] In an embodiment of the present application, the target adjustment parameter is an adjustment parameter used to adjust the backlight brightness of the area to be adjusted so that the adjusted backlight brightness has less effect on the halo of the target area. In one example, since the halo is usually affected by the brightness difference and relative position between the two backlight areas, the target adjustment parameter can be determined based on the brightness difference and relative position between the two backlight areas. In this way, a mapping relationship between the brightness difference and relative position of the two backlight areas and the target adjustment parameter can be pre-constructed. For the target area, the backlight brightness of the area to be adjusted is adjusted based on the corresponding target adjustment parameter determined for the area to be adjusted, which can reduce the halo effect of the target area, thereby improving the halo optimization effect of the target area.

[0061] In the embodiment of the present application, an area to be adjusted is selected from the first adjacent backlight area reaching the target area, and the backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameters, rather than directly adjusting the target area. In this way, the halo optimization of the display panel can be performed even when the target area is a pure black area, thereby expanding the application scope of the halo optimization of the display panel and improving the halo optimization effect of the display panel.

[0062] In step 101 of the embodiment of the present application, a backlight area whose backlight brightness is less than or equal to a set brightness threshold among multiple backlight areas can be determined as a target area. The set brightness threshold refers to a brightness threshold preset according to the selection requirements of the target area. For example, if the set brightness threshold is determined to be 0, a backlight area with a backlight brightness of 0 can be searched for among multiple backlight areas, and the backlight area with a backlight brightness of 0 can be determined as the target area. In this way, the halo optimization can be performed on the backlight area with a backlight brightness of 0 in the display panel to reduce the halo effect of the backlight area with a backlight brightness of 0. Compared with the halo optimization method of the related art that cannot adjust the backlight area with a backlight brightness of 0, the scope of application is wider and the accuracy is higher.

[0063] In step 102 of the embodiment of the present application, a first adjacent backlight region whose backlight brightness is greater than the backlight brightness of the target region can be first determined as a candidate region to be adjusted. A comparison region consisting of the candidate region to be adjusted and a second adjacent backlight region is then determined. The second adjacent backlight region is an adjacent backlight region of the candidate region to be adjusted, and the second adjacent backlight region includes the target region. A determination is then made as to whether the backlight brightness of the candidate region to be adjusted is the maximum backlight brightness in the comparison region. If the backlight brightness of the candidate region to be adjusted is not the maximum backlight brightness in the comparison region, the candidate region to be adjusted is determined as the region to be adjusted.

[0064] In an embodiment of the present application, the area to be adjusted is used to improve the halo effect of the target area. Therefore, the area to be adjusted is in the first adjacent backlight area of ​​the target area, and the backlight brightness of the area to be adjusted needs to be greater than the backlight brightness of the target area. Therefore, the first adjacent backlight area whose backlight brightness is greater than the backlight brightness of the target area can be first determined as the candidate area to be adjusted. However, the candidate area to be adjusted may be the maximum backlight brightness of the backlight area and its adjacent backlight areas. In this way, the candidate area to be adjusted cannot be changed. Therefore, it is necessary to further select the candidate area to be adjusted. In an embodiment of the present application, the second adjacent backlight area of ​​the candidate area to be adjusted is first determined. The range of the second adjacent backlight area can be set according to demand, but the condition that the target area is included in the second adjacent backlight area must be met. The area composed of the candidate area to be adjusted and its second adjacent backlight area is determined as the comparison area. Then, it is determined whether the backlight brightness of the candidate area to be adjusted is the maximum backlight brightness in the comparison area. If not, the candidate area to be adjusted can be determined as the area to be adjusted.

[0065] The following example takes the case where the setting range of the first adjacent area is 8 neighborhoods, the setting range of the second adjacent backlight area is also 8 neighborhoods, and the backlight brightness of the target area is 0. First, the backlight area with a backlight brightness of 0 is determined as the target area in the display panel, and then, the candidate area to be adjusted whose backlight brightness is not 0 is determined in the 8 neighborhoods of the target area. Next, it is determined whether the candidate area to be adjusted is the backlight area with the largest backlight brightness in the comparison area composed of the candidate area to be adjusted and the 8 neighborhoods around it. If not, the candidate adjustment area is determined as the area to be adjusted. In other words, the area to be adjusted needs to meet three conditions. First, the backlight brightness of the area to be adjusted is not 0. Second, the backlight brightness of the area to be adjusted is not the maximum backlight brightness among the backlight area and the 8 neighborhoods around it. Then, there is a target area with a backlight brightness of 0 in the area to be adjusted and the 8 neighborhoods around it. In this way, the halo effect of the target area can be better improved by the area to be adjusted.

[0066] In order to more intuitively show the relationship between the target area and the area to be adjusted, Figure 2 Schematic diagram of a partition of a local area of ​​a display panel provided in an embodiment of the present application. Figure 2As shown, assume that the display panel is divided into 25 backlight areas. AA and CC are areas with a backlight brightness of zero. Therefore, AA and CC can be identified as target areas. For AA, there are three first-adjacent backlight areas: BA, BB, and AB. For CC, there are eight first-adjacent backlight areas: BB, CB, DB, BC, DC, BD, CD, and DD. Taking CC as an example, assuming that all first-adjacent backlight areas have a backlight brightness greater than zero, they can all be identified as candidate areas for adjustment. Next, a determination is made in turn as to whether the backlight brightness of each candidate area for adjustment is the maximum backlight brightness among its comparison areas. Taking BB as an example, BB's second-adjacent backlight areas include AA, BA, CA, AB, CB, AC, BC, and CC. Assuming that BB's backlight brightness is not the maximum among these areas, BB can be identified as an area for adjustment. Therefore, BB satisfies the three conditions described above: its backlight brightness is not zero, its backlight area does not have the maximum backlight brightness among its comparison areas, and its second-adjacent backlight area includes a backlight area with a backlight brightness of zero. Similarly, for other candidate areas to be adjusted in the first adjacent backlight area of ​​CC, the same method can be used to determine the candidate areas to be adjusted that meet the conditions as the areas to be adjusted.

[0067] Figure 3 Schematic diagram of the light diffusion effect of an unadjusted front display panel provided in an embodiment of the present application. Figure 4 This is a schematic diagram of the light diffusion effect of an adjusted display panel provided in an embodiment of the present application. In the embodiment of the present application, the display surface template can have three types of areas: the target area, the area to be adjusted, and the target adjacent area. Assume that the backlight brightness of the area to be adjusted is Y, the brightness of the target adjacent area is X, and the brightness of the target area is 0. Then, due to the effect of light diffusion, the area to be adjusted and the target adjacent area will form a halo on the target area, such as Figure 3 By reducing the backlight brightness of the area to be adjusted, the backlight contrast between the area to be adjusted and the adjacent target area can be increased, and the influence of light diffusion of the area to be adjusted on the target area can be reduced, thereby improving the halo effect on the target area. Figure 4 According to the above formula of ra_new, the closer the backlight brightness of two backlight areas are, the smaller the adjustment range will be. Based on this, the target adjustment parameter of the area to be adjusted can be set.

[0068] In an embodiment of the present application, the target adjustment parameter is related to two factors. The first is the brightness difference between the backlight brightness of the area to be adjusted and the maximum backlight brightness in the second adjacent backlight area. The second is the relative position of the area to be adjusted and the backlight area corresponding to the maximum backlight brightness. Therefore, in an embodiment of the present application, the backlight area with the maximum backlight brightness in the second adjacent backlight area can be first determined as the target adjacent area. Then, the brightness difference and relative position information between the area to be adjusted and the target adjacent area are obtained. Finally, the target adjustment parameter is determined based on the brightness difference and relative position information.

[0069] In the embodiment of the present application, the higher the backlight brightness of the target adjacent area, the smaller the brightness difference between it and the area to be adjusted, the smaller the backlight contrast effect, and therefore the smaller the target adjustment parameter. Based on this, the relative position of the target adjacent area and the area to be adjusted is different, and the light intensity of the target adjacent area to the area to be adjusted is also different, so the target adjustment parameter will also be different. Figure 5a-5c Schematic diagram of the relative positions of backlight areas provided in an embodiment of the present application. Figure 5a-5c As shown, assuming that A is the target adjacent area, B is the area to be adjusted, and C is the target area. The relative position relationship between A and B can include the left-right relationship (see Figure 5a ), diagonal relationship (see Figure 5b ) and the relationship between the upper and lower levels (see Figure 5c ).

[0070] In an embodiment of the present application, the target adjustment parameters may be determined using a target model or a mapping table. The input to the target model may be the identifiers of the area to be adjusted and the target adjacent area, for example, the brightness difference and relative position information between the area to be adjusted and the target adjacent area. The output of the target model is the target adjustment parameters corresponding to the identifiers of the area to be adjusted and the target adjacent area.

[0071] Taking the determination of target adjustment parameters through a target model as an example, the brightness difference and relative position information can be input into the target model to obtain the target adjustment parameters. In an embodiment of the present application, the training method of the target model may include the following steps. First, a sample training set is obtained. The sample training set may include multiple training samples. The training samples include a sample backlight area identifier and a calibration parameter corresponding to the sample backlight area identifier. The sample backlight area includes a first sample area and a second sample area. Then, the training samples are input into the model to be trained to obtain prediction parameters. Finally, the model to be trained is iteratively updated according to the prediction parameters and the calibration parameters until the convergence conditions of the model training are reached to obtain the target model.

[0072] In an embodiment of the present application, the first sample area may be a sample area of ​​the area to be adjusted, and the second sample area may be a sample area of ​​the target adjacent area. The sample backlight area identifier may be a position identifier and a brightness identifier of the sample backlight area, so that the brightness difference and relative position of the first sample area and the second sample area can be obtained. The calibration parameter is a sample of the target adjustment parameter corresponding to the sample backlight area. The brightness difference and relative position of the first sample area and the second sample area are different, and the corresponding calibration parameters are also different. The training sample is input into the model to be trained to obtain the prediction parameter. The model to be trained is then trained based on the prediction parameter and the calibration parameter until the model to be trained reaches the convergence condition of the model training, and the target model can be obtained. The convergence condition may include, but is not limited to, the iterative loss function drops to a certain threshold or the number of iterations reaches a preset number of iterations, etc. By predicting the target adjustment parameter through the target model, the accuracy of the target adjustment parameter prediction can be improved, thereby improving the halo optimization effect of the display panel.

[0073] In an embodiment of the present application, if the target adjustment parameters are determined by a mapping table, the pre-constructed mapping table can be queried based on the brightness difference and relative position information to obtain the target adjustment parameters. The mapping table includes the corresponding relationship between the brightness difference and relative position of the first sample area and the second sample area in the sample backlight area and the target adjustment parameters. In one example, the mapping table can be a LUT (Look-Up Table), and a set of two-dimensional LUTs can be obtained based on the mapping relationship between the brightness difference and relative position and the target adjustment parameters. Table 1 is a mapping table provided in an embodiment of the present application. Please refer to Table 1. The corresponding target adjustment parameters can be determined based on different brightness differences and relative positions.

[0074] Table 1

[0075] Brightness difference Relative Position Target adjustment parameters 10 Superior-subordinate relationship A 10 Diagonal relationship B 10 Left-right relationship C 20 Superior-subordinate relationship D … … … N Left-right relationship M

[0076] In this way, the target adjustment parameter of the to-be-adjusted area can be determined according to the brightness difference and relative position between the to-be-adjusted area and the target adjacent area. In step 103 of the embodiment of the present application, the initial backlight brightness of the to-be-adjusted area can be obtained first. Here, the initial backlight brightness is the backlight brightness of the to-be-adjusted area before adjustment. Then, according to the initial backlight brightness, brightness difference, and target adjustment parameter of the to-be-adjusted area, the target backlight brightness of the to-be-adjusted area is calculated. For example, the target adjustment parameter can be multiplied by the brightness difference, and then the initial backlight brightness is subtracted by the product of the target adjustment parameter and the brightness difference, and the adjusted target backlight brightness can be obtained. Finally, the backlight brightness of the to-be-adjusted area is adjusted from the initial backlight brightness to the target backlight brightness. Taking the target adjustment parameter as S, the initial backlight brightness of the to-be-adjusted area as Y, and the backlight brightness of the target adjacent area as X as an example. Then the target backlight brightness Y_new of the to-be-adjusted area = Y - S×(X - Y), where 0 ≤ S < Y / (X - Y), indicating that the target adjustment parameter is greater than or equal to 0 and less than the ratio of the initial backlight brightness to the brightness difference, so as to ensure that the target backlight brightness of the to-be-adjusted area is less than the initial backlight brightness.

[0077] In the embodiment of the present application, the first adjacent backlight area may include multiple to-be-adjusted areas, and the positions of each to-be-adjusted area relative to the target area are different. Therefore, a certain weight can be set for each to-be-adjusted area, so that the halo optimization effect of the target area is better. In step 103, an adjustment coefficient can be set for each to-be-adjusted area first. Then, based on the adjustment coefficient and target adjustment parameter of each to-be-adjusted area, the multiple to-be-adjusted areas are adjusted.

[0078] See Figure 2 , assuming that in the first adjacent backlight area of the target area CC, both DC and DD are to-be-adjusted areas. The relative position between DC and CC is a left-right relationship, and the relative position between DD and CC is a diagonal relationship. Therefore, a slightly larger adjustment coefficient, such as 0.6, can be set for DC. A slightly smaller adjustment coefficient, such as 0.4, can be set for CC. Then, based on each adjustment coefficient and its respective target adjustment parameter S, each to-be-adjusted area is adjusted, so that the halo optimization effect of the target area is better.

[0079] Figure 6 FIG. 600 is a schematic structural diagram of a backlight adjustment device for a display panel provided in the embodiment of the present application. Please refer to Figure 6In an embodiment of the present application, a backlight adjustment device 600 for a display panel may include an acquisition module 601, a determination module 602, and an adjustment module 603. The acquisition module 601 is configured to acquire a target area whose backlight brightness meets a set condition from multiple backlight areas of the display panel. The determination module 602 is configured to determine an area to be adjusted from the first adjacent backlight area based on the backlight brightness of the first adjacent backlight area of ​​the target area. The adjustment module 603 is configured to adjust the backlight brightness of the area to be adjusted based on a target adjustment parameter corresponding to the area to be adjusted.

[0080] Among them, the acquisition module 601, the determination module 602 and the adjustment module 603 can be used to respectively execute steps 101-103 in the embodiment corresponding to the backlight adjustment method of the above-mentioned display panel. For the specific implementation methods of these modules and more details, please refer to the corresponding method part, which will not be repeated here.

[0081] Figure 7 This is a structural block diagram of a computer device provided in an embodiment of the present application. Figure 7 An embodiment of the present application provides a computer device 700, including the above-mentioned display panel backlight adjustment device, which may include a memory 710 and a processor 720. The memory 710 is configured to store instructions. The processor 720 is configured to call instructions from the memory 710 and implement the above-mentioned display panel backlight adjustment method when executing the instructions.

[0082] An embodiment of the present application further provides a machine-readable storage medium having instructions stored thereon. When the instructions are executed by a processor, the processor is configured to execute the above-mentioned backlight adjustment method for the display panel.

[0083] Since the instructions stored in the computer device and the machine-readable storage medium can execute the steps in the backlight adjustment method of any display panel provided in the embodiments of the present application, the beneficial effects that can be achieved by the backlight adjustment method of any display panel provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0084] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0085] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for adjusting the backlight of a display panel, characterized in that: include: Obtaining a target area whose backlight brightness meets a set condition from the multiple backlight areas of the display panel; wherein obtaining the target area whose backlight brightness meets the set condition from the multiple backlight areas of the display panel comprises: determining a backlight area whose backlight brightness is less than or equal to a set brightness threshold among the multiple backlight areas as the target area; Determining the area to be adjusted from the first adjacent backlight areas according to the backlight brightness of the first adjacent backlight area of ​​the target area; wherein determining the area to be adjusted from the first adjacent backlight areas according to the backlight brightness of the first adjacent backlight area of ​​the target area comprises: Determine a first adjacent backlight area whose backlight brightness is greater than the backlight brightness of the target area as a candidate area to be adjusted; determine a comparison area consisting of the candidate area to be adjusted and a second adjacent backlight area, where the second adjacent backlight area is an adjacent backlight area of ​​the candidate area to be adjusted, and the second adjacent backlight area includes the target area; determine whether the backlight brightness of the candidate area to be adjusted is the maximum backlight brightness in the comparison area; if the backlight brightness of the candidate area to be adjusted is not the maximum backlight brightness in the comparison area, determine the candidate area to be adjusted as the area to be adjusted; The backlight brightness of the area to be adjusted is adjusted based on the target adjustment parameter corresponding to the area to be adjusted.

2. The method according to claim 1, characterized in that The method further comprises: determining the backlight area with the largest backlight brightness in the second adjacent backlight area as the target adjacent area; Obtaining brightness difference and relative position information between the area to be adjusted and the area adjacent to the target; A target adjustment parameter is determined according to the brightness difference and the relative position information.

3. The method according to claim 2, characterized in that The determining of the target adjustment parameter according to the brightness difference and the relative position information includes: The brightness difference and the relative position information are input into a target model to obtain the target adjustment parameter.

4. The method according to claim 3, characterized in that The method further comprises: Acquire a sample training set, the sample training set including a plurality of training samples, the training samples including a sample backlight area identifier and a calibration parameter corresponding to the sample backlight area identifier, the sample backlight area including a first sample area and a second sample area; Inputting the training samples into the model to be trained to obtain prediction parameters; The model to be trained is iteratively updated according to the prediction parameters and the calibration parameters until the convergence condition of the model training is reached, thereby obtaining the target model.

5. The method according to claim 2, characterized in that The determining of the target adjustment parameter according to the brightness difference and the relative position information includes: A pre-built mapping table is searched according to the brightness difference and the relative position information to obtain the target adjustment parameter.

6. The method according to claim 2, characterized in that The adjusting the backlight brightness of the area to be adjusted based on the target adjustment parameter corresponding to the area to be adjusted includes: Obtaining the initial backlight brightness of the area to be adjusted; Calculating a target backlight brightness of the area to be adjusted according to the initial backlight brightness of the area to be adjusted, the brightness difference, and the target adjustment parameter; The backlight brightness of the area to be adjusted is adjusted from the initial backlight brightness to the target backlight brightness.

7. The method according to claim 1, characterized in that The first adjacent backlight area includes a plurality of areas to be adjusted, and adjusting the backlight brightness of the areas to be adjusted based on target adjustment parameters corresponding to the areas to be adjusted includes: Set an adjustment coefficient for each area to be adjusted; The multiple areas to be adjusted are adjusted based on the adjustment coefficient and the target adjustment parameter of each area to be adjusted.

8. A backlight adjustment device for a display panel, used to implement the method according to any one of claims 1 to 7, characterized in that: The device comprises: An acquisition module, configured to acquire a target area whose backlight brightness meets a set condition from the multiple backlight areas of the display panel; A determination module, configured to determine an area to be adjusted from a first adjacent backlight area of ​​the target area according to the backlight brightness of the first adjacent backlight area; An adjustment module is configured to adjust the backlight brightness of the area to be adjusted based on a target adjustment parameter corresponding to the area to be adjusted.

9. A computer device, characterized in that: The backlight adjustment device for a display panel according to claim 8 comprises: a memory configured to store instructions; and The processor is configured to call the instruction from the memory and implement the backlight adjustment method of the display panel according to any one of claims 1 to 7 when executing the instruction.

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