A compensation method and a compensation device of a display panel

Abstract

The application discloses a compensation method and device of a display panel. The display panel comprises a first display area, a second display area and a third display area arranged in sequence along a first direction. The display panel further comprises a driving module arranged on a side of the third display area away from the second display area along the first direction. The driving module is used for providing a power signal for the first display area, the second display area and the third display area. The compensation method of the display panel comprises the following steps: determining display brightness of the first display area, the second display area and the third display area when the display panel displays a preset display gray scale; and determining a compensation value of the first display area and / or the third display area according to the display brightness of the first display area, the second display area and the third display area. The application reduces the display brightness difference between different display areas, improves the brightness uniformity of the display panel, and improves the display effect of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a compensation method and compensation device for a display panel. Background Technology

[0002] With the development of display technology, display panels are being used more and more widely. However, existing display panels are prone to uneven display, which affects their display performance. Summary of the Invention

[0003] This invention provides a compensation method and device for a display panel to reduce the difference in display brightness between different display areas, improve the brightness uniformity of the display panel, and enhance the display effect of the display panel.

[0004] According to one aspect of the present invention, a compensation method for a display panel is provided. The display panel includes a first display area, a second display area, and a third display area arranged sequentially along a first direction. The display panel also includes a driving module disposed along the first direction on the side of the third display area away from the second display area. The driving module is used to provide power signals to the first display area, the second display area, and the third display area. The first display area is the display area in the display panel farthest from the driving module, and the third display area is the display area in the display panel closest to the driving module.

[0005] The compensation methods for the display panel include:

[0006] Determine the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale;

[0007] The compensation value for the first display area and / or the third display area is determined based on the display brightness of the first display area, the second display area, and the third display area.

[0008] Furthermore, compensation values ​​for the first and / or third display areas are determined based on the display brightness of the first, second, and third display areas, including:

[0009] When the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation value of both the first and third display areas is zero; where the set value is less than or equal to 0.

[0010] When the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value, the compensation value of the first display area and / or the third display area is determined based on the brightness difference between the third display area, the second display area and the first display area.

[0011] Furthermore, compensation for the first display area and / or the third display area is determined based on the display brightness of the first display area, the second display area, and the third display area, including:

[0012] The compensation value for the first display area is determined based on the display brightness of the first display area, the second display area, and the third display area.

[0013] Preferably, the compensation value for the first display area is determined based on the display brightness of the first display area, the second display area, and the third display area, including:

[0014] The compensation value for the first display area is determined based on the brightness difference between the first display area and the third display area, as well as the brightness difference between the first display area and the second display area.

[0015] Furthermore, the first display area includes a first sub-area, a second sub-area, and a third sub-area arranged sequentially along the second direction; the second display area includes a fourth sub-area, a fifth sub-area, and a sixth sub-area arranged sequentially along the second direction; and the third display area includes a seventh sub-area, an eighth sub-area, and a ninth sub-area arranged sequentially along the second direction; wherein the second direction and the first direction intersect each other.

[0016] Determine the display brightness of the first, second, and third display areas when the display panel displays a preset grayscale, including:

[0017] The display brightness of the first display area is determined based on the display brightness of the first sub-area, the second sub-area, and the third sub-area;

[0018] The display brightness of the second display area is determined based on the display brightness of the fourth, fifth, and sixth sub-areas.

[0019] The display brightness of the third display area is determined based on the display brightness of the seventh, eighth, and ninth sub-areas.

[0020] Preferably, determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale includes:

[0021] Obtain the display image when the display panel displays the preset grayscale;

[0022] The display brightness of the first, second, and third display areas is determined based on the displayed image.

[0023] Furthermore, determining the display brightness of the first, second, and third display areas when the display panel displays a preset grayscale includes:

[0024] When the display panel displays at least two preset grayscale levels, the display brightness of the first display area, the second display area, and the third display area under each preset grayscale level;

[0025] The compensation values ​​for the first and / or third display areas are determined based on the display brightness of the first, second, and third display areas, including:

[0026] Based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale, determine the compensation value of the first display area and / or the third display area under the preset display grayscale;

[0027] Preferably, after determining the compensation value for the first and / or third display areas under the preset display grayscale based on the display brightness of the first, second, and third display areas under each preset display grayscale, the method further includes:

[0028] The compensation value for each preset display grayscale is stored in the display panel; or, the compensation value for the first display area and / or the third display area is determined based on the compensation values ​​for at least two preset display grayscales, and the compensation value is stored in the display panel.

[0029] Furthermore, determining the display brightness of the first, second, and third display areas when the display panel displays a preset grayscale includes:

[0030] Determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale at each of at least two different preset display brightness levels;

[0031] The compensation values ​​for the first and / or third display areas are determined based on the display brightness of the first, second, and third display areas, including:

[0032] Based on the display brightness of the first display area, the second display area, and the third display area at each preset display brightness level, determine the compensation value of the first display area and / or the third display area at the preset display brightness level;

[0033] Preferably, after determining the compensation value for the first and / or third display areas at each preset display brightness level based on the display brightness of the first, second, and third display areas at each preset display brightness level, the method further includes:

[0034] The compensation value corresponding to each preset display brightness level is stored in the display panel, or the compensation value of the first display area and / or the third display area is determined based on the compensation value corresponding to at least two preset display brightness levels, and the compensation value is stored in the display panel.

[0035] Furthermore, the preset display grayscale includes the display grayscale corresponding to the maximum display brightness of the display panel;

[0036] The compensation value includes at least one of the driving data compensation value and the emission duration compensation value.

[0037] Furthermore, the display panel also includes a power cord that extends along a first direction, with one end of the power cord electrically connected to the drive module.

[0038] The first display area is the display area furthest from the driving module in the display panel, and the third display area is the display area closest to the driving module in the display panel;

[0039] Optionally, each display area includes multiple sub-pixels, each sub-pixel includes a pixel circuit and a light-emitting unit, the power supply terminal of the pixel circuit is electrically connected to a power line, and the output terminal of the pixel circuit is electrically connected to the light-emitting unit.

[0040] According to another aspect of the present invention, a compensation device for a display panel is provided, the compensation device comprising:

[0041] The display brightness determination module is used to determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale.

[0042] The compensation value determination module is used to determine the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area.

[0043] Furthermore, the compensation value determination module includes:

[0044] The zero compensation determination unit is used to determine that when the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of the first display area and the third display area are both zero; wherein, the set value is a value less than or equal to 0.

[0045] The display area compensation determination unit is used to determine the compensation value of the first display area and / or the third display area based on the brightness difference between the third display area, the second display area and the first display area when the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value.

[0046] The compensation method for a display panel provided in this embodiment of the invention determines the display brightness of a first display area, a second display area, and a third display area when the display panel displays a preset grayscale, and determines the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area. This reduces the difference in display brightness between different display areas, improves the brightness uniformity of the display panel, and enhances the display effect of the display panel.

[0047] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a flowchart of a compensation method for a display panel according to an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of a display panel provided according to an embodiment of the present invention;

[0051] Figure 3 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention;

[0052] Figure 4 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention;

[0053] Figure 5 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention;

[0054] Figure 6 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention;

[0055] Figure 7 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention;

[0056] Figure 8 This is a schematic diagram of the structure of a compensation device for a display panel according to an embodiment of the present invention. Detailed Implementation

[0057] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0058] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0059] As mentioned in the background section, existing display panels are prone to uneven display, affecting the final display effect. The inventors discovered through research that this problem arises because the power lines of the display panel inevitably have certain resistance and current differences. This results in ELVDD being higher in areas closer to the power supply location compared to areas farther away. Furthermore, the driving current for all pixels is provided by the power signal ELVDD transmitted through the power lines. Due to these regional differences in ELVDD, the brightness of pixels in different areas is inconsistent, leading to poor brightness uniformity of the display panel.

[0060] To address the aforementioned problems, embodiments of the present invention provide a compensation method for a display panel. Figure 1 This is a flowchart of a compensation method for a display panel according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a display panel according to an embodiment of the present invention, with reference to... Figure 1 and Figure 2 The display panel includes a first display area 01, a second display area 02, and a third display area 03 arranged sequentially along a first direction X. The display panel also includes a driving module 04, which is disposed along the first direction X on the side of the third display area 03 furthest from the second display area 02. The driving module 04 provides power signals to the first display area 01, the second display area 02, and the third display area 03. The first display area 01 is the display area furthest from the driving module 04, and the third display area 03 is the display area closest to the driving module 04.

[0061] Specifically, the driving module 04 can be a driving IC. The driving module 04 is used to provide a power signal to the power line 05, that is, the power line 05 in the display panel is electrically connected to the driving module 04. The driving module 04 is located on the side of the third display area 03 away from the second display area 02, that is, the third display area 03 is closer to the driving module 04 than the first display area 01.

[0062] The compensation methods for the display panel include:

[0063] S110. Determine the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale.

[0064] Specifically, a display image of the display panel when displaying a preset grayscale can be acquired, and the display brightness of the first display area 01, the second display area 02, and the third display area 03 can be determined based on the display image. For example, the brightness of multiple positions in each display area can be determined based on the display image, and the brightness of each display area can be determined based on the average brightness of the multiple positions; alternatively, the display brightness of each display area can be determined based on the brightness of the center position of each display area; or each display area can be divided into multiple sub-areas, and the display brightness of the display area can be determined based on the brightness of each sub-area.

[0065] S120. Determine the compensation value for the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area.

[0066] Specifically, the brightness of the third display area 03 can be subtracted from the brightness of the first display area 01 and the second display area 02. If the difference between the brightness of the first display area 01 and the brightness of the third display area 03 is greater than or equal to a set value (which can be a negative value close to zero), meaning the brightness of the first display area 01 and the third display area 03 are close, or the brightness of the first display area 01 is greater than the brightness of the third display area 03, then no compensation is needed, and the compensation values ​​for both the first display area 01 and the third display area 03 are zero. If the difference between the brightness of the first display area 01 and the brightness of the third display area 03 is less than the set value, the compensation values ​​for the first display area 01 and / or the third display area 03 are determined based on the brightness differences between the third display area 03, the second display area 02, and the first display area 01.

[0067] Furthermore, compensation can be performed only on the first display area 01 or only on the third display area 03. Since the brightness difference between the first display area 01, the second display area 02, and the third display area 03 is caused by differences in power signals, and the first display area 01 is furthest from the driving module 04 while the third display area 03 is closest, the power signal difference between the first and third display areas is the greatest, resulting in the greatest brightness difference between them. By compensating for the first display area 01 and / or the third display area 03, display unevenness can be improved while reducing the amount of compensation data and increasing the compensation speed. The compensation value can be a grayscale compensation value or a driving data compensation value; this embodiment does not impose a specific limitation.

[0068] The compensation method for a display panel provided in this embodiment of the invention determines the display brightness of the first display area 01, the second display area 02, and the third display area 03 when the display panel displays a preset grayscale, and determines the compensation value of the first display area 01 and / or the third display area 03 based on the display brightness of the first display area 01, the second display area 02, and the third display area 03. This reduces the difference in display brightness between different display areas, improves the brightness uniformity of the display panel, and enhances the display effect of the display panel.

[0069] This embodiment is based on the above embodiment and optimizes it. Specifically, S120, which determines the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area, is optimized as follows: when the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of the first display area and the third display area are both zero; wherein, the set value is a value less than or equal to 0; when the difference between the display brightness of the first display area and the display brightness of the third display area is less than the set value, the compensation value of the first display area and / or the third display area is determined based on the brightness difference between the third display area, the second display area, and the first display area. Figure 3 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention, see reference. Figure 3 The optimized compensation methods for the display panel include:

[0070] S210. Determine the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale.

[0071] Specifically, this step has the same function as step S110, and will not be described again here.

[0072] S220. When the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of the first display area and the third display area are both zero; wherein, the set value is less than or equal to 0.

[0073] Specifically, if the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to the set value, it means that the display brightness of the first display area and the third display area are not significantly different, and no compensation is needed for the display brightness of the first and third display areas. Since the second display area is located between the first and third display areas, the power signal is gradually lost during transmission from the third display area to the first display area via the second display area. Therefore, the difference in display brightness between the second and third display areas caused by power signal loss is smaller than the difference in display brightness between the first and third display areas. If the display brightness of the first display area and the third display area are not significantly different, the display brightness of the second display area is even closer to that of the third display area. Therefore, the compensation value for the second display area is also zero.

[0074] S230. When the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value, a compensation value for the first display area and / or the third display area is determined based on the brightness difference between the third display area, the second display area and the first display area.

[0075] Specifically, if the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value, it indicates that the display brightness of the first display area is less than that of the third display area, and the brightness difference between the first and third display areas is significant. A compensation value for the first display area is determined based on the difference in brightness between the first and third display areas, or a compensation value for the first display area is determined based on the difference in brightness between the first and third display areas and the difference in brightness between the first and second display areas, to increase the display brightness of the first display area and bring it closer to the same level as the third display area. Alternatively, a compensation value for the third display area is determined based on the difference in brightness between the first and third display areas, or a compensation value for the third display area is determined based on the difference in brightness between the first and third display areas and the difference in brightness between the second and third display areas, to decrease the display brightness of the third display area and bring it closer to the same level as the first display area.

[0076] The compensation method for the display panel provided in this embodiment of the invention improves the compensation accuracy by reducing the brightness difference between different display areas, improving the brightness uniformity of the display panel, and enhancing the display effect of the display panel. When the difference between the brightness of the first display area and the brightness of the third display area is greater than or equal to a set value, the compensation values ​​of the first display area and / or the third display area are both zero, i.e., no compensation is performed. When the difference between the brightness of the first display area and the brightness of the third display area is less than the set value, the compensation values ​​of the first display area and / or the third display area are determined based on the brightness difference between the third display area, the second display area and the first display area.

[0077] This embodiment is based on the above embodiment and optimizes it. Specifically, S120, determining the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area, is optimized to: determining the compensation value of the first display area based on the display brightness of the first display area, the second display area and the third display area. Figure 4 This is a flowchart of another compensation method for a display panel according to an embodiment of the present invention, see reference. Figure 4 The optimized compensation methods for the display panel include:

[0078] S310. Determine the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale.

[0079] Specifically, this step has the same function as step S110, and will not be described again here.

[0080] S320. Determine the compensation value of the first display area based on the display brightness of the first display area, the second display area, and the third display area.

[0081] Specifically, the compensation value of the first display area can be determined based on the brightness difference between the first display area and the third display area, as well as the brightness difference between the first display area and the second display area.

[0082] The display panel compensation method provided in this embodiment of the invention determines the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale. Based on the display brightness of the first display area, the second display area, and the third display area, a compensation value for the first display area is jointly determined. This method reduces the difference in display brightness between different display areas, improves the brightness uniformity of the display panel, and enhances the display effect of the display panel. Furthermore, when compensating for the display brightness of the first display area, which is far from the driver IC, the impact on the display brightness of the third display area and the second display area, which are closer to the driver IC, is relatively small. The compensation method is simpler, and the compensation algorithm is easier to implement.

[0083] Preferably, the compensation value for the first display area is determined based on the display brightness of the first display area, the second display area, and the third display area, including:

[0084] The compensation value for the first display area is determined based on the brightness difference between the first display area and the third display area, as well as the brightness difference between the first display area and the second display area.

[0085] Specifically, a first brightness difference between the display brightness of the first display area and the display brightness of the third display area can be calculated, and a second brightness difference between the display brightness of the first display area and the display brightness of the second display area can be calculated. The compensation value for the first display area is then determined based on the average of the first and second brightness differences, or based on the difference between the first and second brightness differences. This embodiment comprehensively considers the brightness difference between the first and third display areas, as well as the brightness difference between the first and second display areas, when determining the compensation value for the first display area, resulting in better uniformity and display effect across the entire display panel after compensation.

[0086] This embodiment is based on the above embodiment and optimizes it, with reference to... Figure 2 Specifically, the first display area 01 includes a first sub-area 1, a second sub-area 2, and a third sub-area 3 arranged sequentially along the second direction Y; the second display area 02 includes a fourth sub-area 4, a fifth sub-area 5, and a sixth sub-area 6 arranged sequentially along the second direction Y; and the third display area 03 includes a seventh sub-area 7, an eighth sub-area 8, and a ninth sub-area 9 arranged sequentially along the second direction Y. The second direction Y and the first direction X intersect each other. The process of determining the display brightness of the first, second, and third display areas when the display panel displays a preset grayscale level in step S110 is optimized as follows: the display brightness of the first display area is determined based on the display brightness of the first, second, and third sub-areas; the display brightness of the second display area is determined based on the display brightness of the fourth, fifth, and sixth sub-areas; and the display brightness of the third display area is determined based on the display brightness of the seventh, eighth, and ninth sub-areas. Figure 5 This is a flowchart of another compensation method for a display panel according to an embodiment of the present invention, see reference. Figure 2 and Figure 5 The optimized compensation methods for the display panel include:

[0087] S411. Determine the display brightness of the first display area based on the display brightness of the first sub-area, the second sub-area, and the third sub-area.

[0088] Specifically, the display brightness of the first sub-area 1, the display brightness of the second sub-area 2, and the display brightness of the third sub-area 3 can be averaged to determine the display brightness of the first display area 01.

[0089] S412. Determine the display brightness of the second display area based on the display brightness of the fourth, fifth, and sixth sub-areas.

[0090] Specifically, the display brightness of the fourth sub-area 4, the fifth sub-area 5, and the sixth sub-area 6 can be averaged to determine the display brightness of the second display area 02.

[0091] S413. Determine the display brightness of the third display area based on the display brightness of the seventh, eighth, and ninth sub-areas.

[0092] Specifically, the display brightness of the seventh sub-area 7, the eighth sub-area 8, and the ninth sub-area 9 can be averaged to determine the display brightness of the third display area 03.

[0093] S420. Determine the compensation value for the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area.

[0094] Specifically, this step has the same function as step S120, and will not be described again here.

[0095] The display panel compensation method provided in this embodiment of the invention divides each display area into multiple sub-areas and determines the display brightness of different display areas by averaging the display brightness of multiple sub-areas. This makes the determined display brightness of each display area more reflective of the actual brightness of the display area, thereby making the compensation value determined based on each display area more accurate and enabling better compensation of the display panel.

[0096] Optionally, determine the display brightness of the first, second, and third display areas when the display panel displays a preset grayscale, including:

[0097] Obtain the display image when the display panel displays the preset grayscale;

[0098] The display brightness of the first, second, and third display areas is determined based on the displayed image.

[0099] Specifically, a display image of the display panel displaying a preset grayscale can be captured by a camera or other optical device. The display brightness of the first display area 01, the second display area 02, and the third display area 03 can be determined based on the display image. For example, the display brightness of the first display area 01, the second display area 02, and the third display area 03 can be determined by acquiring the display brightness of a point in each of the first display area 01, the second display area 02, and the third display area 03. Alternatively, the display brightness of the first display area 01, the second display area 02, and the third display area 03 can be determined by acquiring the brightness data of multiple points in the first display area 01, the second display area 02, and the third display area 03, and averaging the acquired brightness data.

[0100] This embodiment is based on the above embodiment and optimizes it. Specifically, S110, determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale, is optimized to: determining the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale when the display panel displays at least two preset display grayscales. S120, determining the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area, is optimized to: determining the compensation value of the first display area and / or the third display area under each preset display grayscale based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale. Figure 6 This is a flowchart of another compensation method for a display panel provided according to an embodiment of the present invention, see reference. Figure 6 The optimized compensation methods for the display panel include:

[0101] S510. When the display panel displays at least two preset display gray levels, determine the display brightness of the first display area, the second display area, and the third display area under each preset display gray level.

[0102] Here, "at least two" can be understood as two or more. For example, the display panel first displays a preset grayscale and determines the display brightness of the first, second, and third display areas when displaying the current preset grayscale; then it displays the next preset grayscale and determines the display brightness of the first, second, and third display areas when displaying the current preset grayscale, until the display brightness of the first, second, and third display areas when displaying each preset grayscale is determined.

[0103] S520. Based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale, determine the compensation value of the first display area and / or the third display area under the preset display grayscale.

[0104] Specifically, the brightness of the third display area under each preset display grayscale can be subtracted from the brightness of the first display area and the brightness of the second display area, respectively. The compensation value of the first display area and / or the third display area under each preset display grayscale can be determined based on the brightness difference between the third display area, the second display area and the first display area under each preset display grayscale.

[0105] Since the display panel has different display characteristics at different display gray levels, resulting in different brightness differences between the display areas at different display gray levels, this embodiment determines the compensation value of the first display area and / or the third display area at each preset display gray level based on the display brightness of the first display area, the second display area and the third display area at each preset display gray level. This allows the display panel to be compensated in a targeted manner according to the different display gray levels, thereby improving the compensation accuracy.

[0106] Optionally, after determining the compensation values ​​for the first and / or third display areas under the preset display grayscale based on the display brightness of the first, second, and third display areas under each preset display grayscale, the method further includes:

[0107] The compensation value for each preset display grayscale is stored in the display panel; or, the compensation value for the first display area and / or the third display area is determined based on the compensation values ​​for at least two preset display grayscales, and the compensation value is stored in the display panel.

[0108] Specifically, the compensation values ​​for the first and / or third display areas under each preset grayscale can be directly stored in the display panel, and compensation can be applied to different display areas in real time during the normal operation of the display panel. Alternatively, the compensation values ​​calculated under at least two preset grayscales can be averaged to determine the compensation values ​​for the first and / or third display areas of the display panel, and these calculated compensation values ​​can be stored in the display panel. For example, the compensation value for the first display area can be determined by averaging the compensation values ​​for the first display area under each preset grayscale, and the compensation value for the third display area can be determined by averaging the compensation values ​​for the third display area under each preset grayscale.

[0109] After storing the compensation value for each preset grayscale level in the display panel, during normal operation of the display panel, the compensation value of the first display area is determined by interpolation based on the display grayscale of the first display area and the compensation value of the first display area corresponding to each preset grayscale level. Similarly, the compensation value of the third display area is determined by interpolation based on the display grayscale of the third display area and the compensation value of the third display area corresponding to each preset grayscale level. Alternatively, the display grayscale of the display panel can be divided into multiple grayscale ranges, each corresponding to a preset grayscale level. Based on the grayscale range of the first display area, the compensation value of the first display area corresponding to the preset grayscale level within that range is determined as the compensation value of the first display area. Likewise, based on the grayscale range of the third display area, the compensation value of the third display area corresponding to the preset grayscale level within that range is determined as the compensation value of the third display area. The average grayscale value of each pixel unit in the first display area can be determined as the display grayscale of the first display area, and the average grayscale value of each pixel unit in the third display area can be determined as the display grayscale of the third display area.

[0110] When the compensation values ​​of the first display area and / or the third display area are determined based on the compensation values ​​of at least two preset display grayscale levels, and the compensation values ​​are stored in the display panel, the first display area can be compensated directly based on the stored compensation value of the first display area during the display process, and the third display area can be compensated based on the stored compensation value of the third display area.

[0111] This embodiment stores the compensation value for each preset display grayscale level in the display panel, allowing the display panel to perform targeted compensation based on the display grayscale level during display, thereby improving compensation accuracy. Alternatively, compensation values ​​for the first display area and / or the third display area are determined based on compensation values ​​for at least two preset display grayscale levels, and these compensation values ​​are stored in the display panel. The final compensation value, determined by averaging the compensation values ​​of at least two preset display grayscale levels, integrates the compensation characteristics of each grayscale level. This approach allows for better compensation of the display panel while reducing data storage and simplifying the compensation process.

[0112] This embodiment is based on the above embodiment and optimizes it. Specifically, S110, determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale, is optimized to: determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale in each of at least two different preset display brightness levels. S120, determining the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area, is optimized to: determining the compensation value of the first display area and / or the third display area at each preset display brightness level based on the display brightness of the first display area, the second display area, and the third display area at each preset display brightness level. Figure 7 This is a flowchart of another compensation method for a display panel according to an embodiment of the present invention, see reference. Figure 7 The optimized compensation methods for the display panel include:

[0113] S610. Determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale in each of at least two different preset display brightness levels.

[0114] To meet display requirements under varying ambient brightness, display panels typically feature multiple depth-of-view (DBV) brightness levels. Each DBV level has a minimum brightness of 0, but different maximum brightness levels. The total number of grayscale levels displayed is the same across all DBV levels; for example, all can display grayscale values ​​from 0 to 255. The brightness corresponding to the same grayscale value differs across different DBV levels. "At least two" can be understood as two or more levels.

[0115] Specifically, the display panel first displays a preset grayscale at a preset brightness level, and determines the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale at the current preset brightness level; then it displays the preset grayscale at the next preset brightness level, and determines the display brightness of the first, second, and third display areas when the display panel displays the preset grayscale at the current preset brightness level, until the display brightness of the first, second, and third display areas at each preset brightness level is determined.

[0116] S620. Based on the display brightness of the first display area, the second display area, and the third display area under each preset display brightness level, determine the compensation value of the first display area and / or the third display area under the preset display brightness level.

[0117] Specifically, for each preset display brightness level, the display brightness of the third display area at that preset display brightness level is subtracted from the display brightness of the first display area and the display brightness of the second display area. When the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value, the compensation value of the first display area and / or the third display area at the preset display brightness level is determined based on the brightness difference between the third display area, the second display area and the first display area.

[0118] Because the display panel has different brightness ranges at different brightness levels, the brightness differences of different display areas when displaying the preset grayscale at different brightness levels are also different. Therefore, different display areas require different compensation values. By measuring the display brightness at different brightness levels and preset grayscale, and determining the compensation value according to the display brightness at different brightness levels and preset grayscale, targeted compensation can be performed on the display brightness at different brightness levels and preset grayscale based on the determined compensation value, thereby improving the compensation accuracy.

[0119] Optionally, after determining the compensation value for the first and / or third display areas at each preset display brightness level based on the display brightness of the first, second, and third display areas at each preset display brightness level, the method further includes:

[0120] The compensation value corresponding to each preset display brightness level is stored in the display panel, or the compensation value of the first display area and / or the third display area is determined based on the compensation value corresponding to at least two preset display brightness levels, and the compensation value is stored in the display panel.

[0121] Specifically, the compensation values ​​for the first and / or third display areas at each preset brightness level can be directly stored in the display panel, and compensation can be applied to different display areas in real time during normal operation of the display panel. Alternatively, the compensation values ​​calculated at at least two preset brightness levels can be averaged to determine the compensation values ​​for the first and / or third display areas of the display panel, and these calculated compensation values ​​can be stored in the display panel. For example, the compensation value for the first display area can be determined by averaging the compensation values ​​for the first display area at each preset brightness level, and the compensation value for the third display area can be determined by averaging the compensation values ​​for the third display area at each preset brightness level.

[0122] After storing the compensation value for each preset display brightness level in the display panel, during the normal operation of the display panel, the compensation value of the first display area is determined by interpolation based on the display brightness level of the display panel and the first display area compensation value corresponding to each preset display brightness level, and the compensation value of the third display area is determined by interpolation based on the display brightness level of the third display area and the third display area compensation value corresponding to each preset display brightness level.

[0123] When the compensation values ​​for the first display area and / or the third display area are determined based on the compensation values ​​under at least two preset display brightness levels, and the compensation values ​​are stored in the display panel, the first display area can be compensated directly based on the stored compensation value of the first display area during the display process, and the third display area can be compensated based on the stored compensation value of the third display area.

[0124] This embodiment stores the compensation value for each preset display brightness level in the display panel, allowing the display panel to provide targeted compensation based on the display brightness level during display, thus improving compensation accuracy. Alternatively, compensation values ​​for the first and / or third display areas are determined based on compensation values ​​for at least two preset display brightness levels, and these compensation values ​​are stored in the display panel. The final compensation value, determined by averaging the compensation values ​​of at least two preset grayscale levels, integrates the compensation characteristics of each display brightness level. This approach allows for better compensation of the display panel while reducing data storage and simplifying the compensation process.

[0125] Furthermore, the preset display grayscale includes the display grayscale corresponding to the maximum display brightness of the display panel;

[0126] The compensation value includes at least one of the driving data compensation value and the emission duration compensation value.

[0127] Among them, at least one can be understood as one or more. For example, the compensation value may only include the driving data compensation value, or only include the light emission duration compensation value, or may include both the driving data compensation value and the light emission duration compensation value at the same time, that is, the driving data and the light emission duration are compensated at the same time.

[0128] Specifically, the preset display grayscale may include only the display grayscale corresponding to the maximum display brightness of the display panel, or it may include the display grayscale corresponding to the maximum display brightness of the display panel, as well as other display grayscales besides the display grayscale corresponding to the maximum display brightness.

[0129] This embodiment is based on the above embodiment and optimizes it, with reference to... Figure 2 The display panel also includes a power cord 05, which extends along the first direction X, and one end of the power cord 05 is electrically connected to the drive module 04.

[0130] Specifically, the power signal output by the drive module 04 is transmitted to each sub-pixel 06 through the power line 05.

[0131] Optionally, each display area includes multiple sub-pixels 06, each sub-pixel 06 includes a pixel circuit 061 and a light-emitting unit 062, the power supply terminal of the pixel circuit 061 is electrically connected to the power line 05, and the output terminal of the pixel circuit 061 is electrically connected to the light-emitting unit 062.

[0132] This invention provides a compensation device for a display panel. Figure 8 This is a schematic diagram of a compensation device for a display panel according to an embodiment of the present invention. (Refer to...) Figure 8 The compensation device 700 for the display panel includes:

[0133] The display brightness determination module 710 is used to determine the display brightness of the first display area, the second display area and the third display area when the display panel displays a preset display grayscale;

[0134] The compensation value determination module 720 is used to determine the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area.

[0135] Furthermore, the compensation value determination module 720 includes:

[0136] The zero compensation determination unit is used to determine that when the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of the first display area and the third display area are both zero; wherein, the set value is a value less than or equal to 0.

[0137] The display area compensation determination unit is used to determine the compensation value of the first display area and / or the third display area based on the brightness difference between the third display area, the second display area and the first display area when the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value.

[0138] Furthermore, the compensation value determination module 720 includes:

[0139] The first display area compensation value determination unit is used to determine the compensation value of the first display area based on the display brightness of the first display area, the second display area and the third display area;

[0140] Optionally, the first display area compensation value determination unit is also used for:

[0141] The compensation value for the first display area is determined based on the brightness difference between the first display area and the third display area, as well as the brightness difference between the first display area and the second display area.

[0142] Furthermore, the first display area includes a first sub-area, a second sub-area, and a third sub-area arranged sequentially along the second direction; the second display area includes a fourth sub-area, a fifth sub-area, and a sixth sub-area arranged sequentially along the second direction; and the third display area includes a seventh sub-area, an eighth sub-area, and a ninth sub-area arranged sequentially along the second direction; wherein the second direction and the first direction intersect each other.

[0143] The display brightness determination module 710 includes:

[0144] The first display brightness determination unit is used to determine the display brightness of the first display area based on the display brightness of the first sub-area, the second sub-area, and the third sub-area;

[0145] The second display brightness determination unit is used to determine the display brightness of the second display area based on the display brightness of the fourth sub-area, the fifth sub-area, and the sixth sub-area;

[0146] The third display brightness determination unit is used to determine the display brightness of the third display area based on the display brightness of the seventh sub-area, the eighth sub-area, and the ninth sub-area;

[0147] Optionally, the display brightness determination module 710 also includes:

[0148] The display image acquisition unit is used to acquire the display image when the display panel displays a preset grayscale level;

[0149] The display brightness determination unit is used to determine the display brightness of the first display area, the second display area, and the third display area based on the displayed image.

[0150] Furthermore, the display brightness determination module 710 is also used for:

[0151] When the display panel displays at least two preset grayscale levels, the display brightness of the first display area, the second display area, and the third display area under each preset grayscale level;

[0152] The compensation value determination module 720 is also used for:

[0153] Based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale, determine the compensation value of the first display area and / or the third display area under the preset display grayscale;

[0154] Optionally, the compensation device 700 for the display panel also includes:

[0155] The first storage module is used to determine the compensation value of the first display area and / or the third display area under the preset display grayscale based on the display brightness of the first display area, the second display area and the third display area under each preset display grayscale, and then store the compensation value of each preset display grayscale in the display panel; or, it can determine the compensation value of the first display area and / or the third display area based on the compensation value of at least two preset display grayscales and store the compensation value in the display panel.

[0156] Furthermore, the display brightness determination module 710 is also used for:

[0157] Determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale at each of at least two different preset display brightness levels;

[0158] The compensation value determination module 720 is also used for:

[0159] Based on the display brightness of the first display area, the second display area, and the third display area at each preset display brightness level, determine the compensation value of the first display area and / or the third display area at the preset display brightness level;

[0160] Optionally, the compensation device 700 for the display panel also includes:

[0161] The second storage module is used to determine the compensation value of the first display area and / or the third display area under the preset display grayscale based on the display brightness of the first display area, the second display area and the third display area under each preset display grayscale, and then store the compensation value corresponding to each preset display brightness level in the display panel; or, it can determine the compensation value of the first display area and / or the third display area based on the compensation value corresponding to at least two preset display brightness levels and store the compensation value in the display panel.

[0162] Furthermore, the preset display grayscale includes the display grayscale corresponding to the maximum display brightness of the display panel;

[0163] The compensation value includes at least one of the driving data compensation value and the emission duration compensation value.

[0164] Furthermore, the display panel also includes a power cord that extends along a first direction, with one end of the power cord electrically connected to the drive module.

[0165] The first display area is the display area furthest from the driving module in the display panel, and the third display area is the display area closest to the driving module in the display panel;

[0166] Optionally, each display area includes multiple sub-pixels, each sub-pixel includes a pixel circuit and a light-emitting unit, the power supply terminal of the pixel circuit is electrically connected to a power line, and the output terminal of the pixel circuit is electrically connected to the light-emitting unit.

[0167] The compensation device for the display panel provided in the embodiments of the present invention can execute the compensation method for the display panel provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0168] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0169] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A compensation method for a display panel, characterized in that, The display panel includes a first display area, a second display area, and a third display area arranged sequentially along a first direction. The display panel also includes a driving module, which is disposed along the first direction on the side of the third display area away from the second display area. The driving module is used to provide power signals to the first display area, the second display area, and the third display area. The first display area is the display area in the display panel that is farthest from the driving module, and the third display area is the display area in the display panel that is closest to the driving module. The compensation methods for the display panel include: Determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale; The compensation value for the first display area and / or the third display area is determined based on the display brightness of the first display area, the second display area, and the third display area.

2. The compensation method for the display panel according to claim 1, characterized in that, Determining the compensation value for the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area includes: When the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of both the first display area and the third display area are zero; wherein, the set value is less than or equal to 0. When the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value, a compensation value for the first display area and / or the third display area is determined based on the brightness difference between the third display area, the second display area and the first display area.

3. The compensation method for the display panel according to claim 1, characterized in that, Determining compensation for the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area includes: The compensation value for the first display area is determined based on the display brightness of the first display area, the second display area, and the third display area; Preferably, determining the compensation value for the first display area based on the display brightness of the first display area, the second display area, and the third display area includes: The compensation value of the first display area is determined based on the brightness difference between the first display area and the third display area, and the brightness difference between the first display area and the second display area.

4. The compensation method for the display panel according to claim 1, characterized in that, The first display area includes a first sub-area, a second sub-area, and a third sub-area arranged sequentially along a second direction; the second display area includes a fourth sub-area, a fifth sub-area, and a sixth sub-area arranged sequentially along a second direction; and the third display area includes a seventh sub-area, an eighth sub-area, and a ninth sub-area arranged sequentially along a second direction; wherein the second direction and the first direction intersect each other. Determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale includes: The display brightness of the first display area is determined based on the display brightness of the first sub-area, the second sub-area, and the third sub-area; The display brightness of the second display area is determined based on the display brightness of the fourth sub-area, the fifth sub-area, and the sixth sub-area; The display brightness of the third display area is determined based on the display brightness of the seventh sub-area, the eighth sub-area, and the ninth sub-area; Preferably, determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale includes: Obtain the display image when the display panel displays the preset grayscale; The display brightness of the first display area, the second display area, and the third display area is determined based on the displayed image.

5. The compensation method for the display panel according to claim 1, characterized in that, Determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale includes: When the display panel displays at least two preset display grayscale levels, the display brightness of the first display area, the second display area, and the third display area at each preset display grayscale level; Determining the compensation value for the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area includes: Based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale, determine the compensation value of the first display area and / or the third display area under the preset display grayscale; Preferably, after determining the compensation value of the first display area and / or the third display area under the preset display grayscale based on the display brightness of the first display area, the second display area, and the third display area under each preset display grayscale, the method further includes: The compensation value for each of the preset display grayscale levels is stored in the display panel; or, the compensation value for the first display area and / or the third display area is determined based on the compensation values ​​for at least two preset display grayscale levels, and the compensation value is stored in the display panel.

6. The compensation method for the display panel according to claim 1, characterized in that, Determining the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset grayscale includes: Determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale at each of at least two different preset display brightness levels; Determining the compensation value for the first display area and / or the third display area based on the display brightness of the first display area, the second display area, and the third display area includes: Based on the display brightness of the first display area, the second display area, and the third display area at each preset display brightness level, determine the compensation value of the first display area and / or the third display area at the preset display brightness level; Preferably, after determining the compensation value of the first display area and / or the third display area at each preset display brightness level based on the display brightness of the first display area, the second display area, and the third display area at each preset display brightness level, the method further includes: The compensation value corresponding to each preset display brightness level is stored in the display panel, or the compensation value of the first display area and / or the third display area is determined based on the compensation values ​​corresponding to at least two preset display brightness levels, and the compensation value is stored in the display panel.

7. The compensation method for a display panel according to claim 1, characterized in that, The preset display grayscale includes the display grayscale corresponding to the maximum display brightness of the display panel; The compensation value includes at least one of the driving data compensation value and the emission duration compensation value.

8. The compensation method for a display panel according to claim 1, characterized in that, The display panel also includes a power cord that extends along the first direction and one end of the power cord is electrically connected to the drive module. Preferably, each of the display areas includes a plurality of sub-pixels, each of the sub-pixels includes a pixel circuit and a light-emitting unit, the power supply terminal of the pixel circuit is electrically connected to the power line, and the output terminal of the pixel circuit is electrically connected to the light-emitting unit.

9. A compensation device for a display panel, characterized in that, include: The display brightness determination module is used to determine the display brightness of the first display area, the second display area, and the third display area when the display panel displays a preset display grayscale. The compensation value determination module is used to determine the compensation value of the first display area and / or the third display area based on the display brightness of the first display area, the second display area and the third display area.

10. The compensation device for the display panel according to claim 9, characterized in that, The compensation value determination module includes: A zero-compensation determination unit is configured to determine that when the difference between the display brightness of the first display area and the display brightness of the third display area is greater than or equal to a set value, the compensation values ​​of both the first display area and the third display area are zero; wherein the set value is less than or equal to 0. The display area compensation determination unit is used to determine the compensation value of the first display area and / or the third display area based on the brightness difference between the first display area and the third display area when the difference between the display brightness of the first display area and the display brightness of the third display area is less than a set value.

Images