Display panel aging compensation method, device, equipment and storage medium

Abstract

The application discloses a display panel aging compensation method, device, equipment and storage medium. The display panel aging compensation method comprises the following steps: acquiring the brightness of a display panel under different lighting times; determining a target decay relationship formula corresponding to the display panel from a plurality of preset decay relationship formulas according to the brightness of the display panel under different lighting times, wherein the preset decay relationship formula is used for representing the corresponding relationship between the lighting time and the brightness of the display panel; and determining the compensation value of the display panel under a target lighting time according to the target decay relationship formula. According to the embodiment of the application, the aging compensation precision can be improved, so that more accurate compensation can be achieved, and the display effect is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a method, apparatus, device, and storage medium for compensating for aging of a display panel. Background Technology

[0002] An OLED device in an Organic Light Emitting Diode (OLED) display panel typically includes an anode, an emissive layer, and a cathode. The emissive layer is made of organic semiconductor materials and emits light under the influence of the anode and cathode.

[0003] However, as OLED display panels are used for longer periods, the organic semiconductor materials in the light-emitting layer of the OLED device will gradually age, resulting in poor display performance of the OLED display panel. Summary of the Invention

[0004] This application provides a method, apparatus, device, and storage medium for compensating for aging of a display panel, which can improve the accuracy of aging compensation, thereby facilitating more precise compensation and improving the display effect.

[0005] In a first aspect, embodiments of this application provide a display panel aging compensation method, comprising: obtaining the brightness of the display panel at different lighting times; determining a target attenuation formula corresponding to the display panel from a plurality of preset attenuation formulas based on the brightness of the display panel at different lighting times, wherein the preset attenuation formulas are used to characterize the correspondence between the lighting time and brightness of the display panel; and determining a compensation value of the display panel at a target lighting time based on the target attenuation formula.

[0006] In one possible implementation of the first aspect, multiple preset attenuation equations correspond to different brightness attenuation trends. Based on the brightness of the display panel at different lighting times, a target attenuation equation corresponding to the display panel is determined from the multiple preset attenuation equations, including:

[0007] Based on the brightness of the display panel at different lighting times, a preset attenuation relationship that has the same brightness attenuation trend as the display panel is selected from multiple preset attenuation relationship expressions as a candidate attenuation relationship expression;

[0008] Based on the brightness of the display panel at different lighting times, the coefficients in the candidate attenuation formula are adjusted to obtain the target attenuation formula.

[0009] In one possible implementation of the first aspect, the display panel includes a plurality of grayscale binding points. For any grayscale binding point, a compensation value for the display panel at the target illumination time is determined according to the target attenuation formula, including:

[0010] Based on the target attenuation relationship corresponding to the gray-level binding point, the compensation lookup table corresponding to the gray-level binding point is determined. The compensation lookup table includes the correspondence between the brightness attenuation characterization value and the compensation value. The brightness attenuation characterization value is determined based on the brightness attenuation value and attenuation time corresponding to the gray-level binding point.

[0011] Based on the target illumination time, determine the brightness attenuation characterization value corresponding to the grayscale binding point;

[0012] Based on the brightness attenuation characterization value corresponding to the grayscale binding point, the compensation value of the grayscale binding point under the target lighting time is determined from the compensation lookup table.

[0013] In one possible implementation of the first aspect, a compensation lookup table corresponding to the gray-level binding points is determined based on the target attenuation relationship corresponding to the gray-level binding points, including:

[0014] Obtain the brightness of grayscale binding points at different lighting times, wherein the brightness at at least one lighting time is determined according to the target attenuation formula;

[0015] Subtract the brightness at adjacent lighting times to obtain the first correspondence between the brightness attenuation value of the grayscale binding point and the lighting time.

[0016] Obtain the initial brightness of grayscale binding points at the initial lighting time, and determine the initial brightness of multiple preset grayscales at the initial lighting time, where the preset grayscales are greater than the grayscale binding points.

[0017] Calculate the initial brightness difference between multiple preset gray levels and gray level binding points;

[0018] Substitute each initial brightness difference into the brightness attenuation value in the first correspondence to obtain each first attenuation time between the gray level binding point and multiple preset gray levels.

[0019] Determine the first decay number of grayscale binding points within the first decay time, and determine the single decay brightness of grayscale binding points.

[0020] The product of the first attenuation number and the brightness of a single attenuation is used as the brightness attenuation characterization value in the compensation lookup table, and the difference between the preset gray level and the gray level binding point is used as the compensation value in the compensation lookup table.

[0021] In one possible implementation of the first aspect, determining the brightness attenuation characterization value corresponding to the grayscale binding point based on the target illumination time includes:

[0022] Determine the number of times the grayscale point decays within the target illumination time, and determine the brightness of each grayscale point decays.

[0023] The product of the target attenuation number and the brightness of a single attenuation is used as the brightness attenuation characterization value corresponding to the grayscale binding point.

[0024] In one possible implementation of the first aspect, determining the single-pass attenuation brightness of grayscale binding points includes:

[0025] Obtain the initial brightness of each grayscale point on the display panel at the initial lighting time;

[0026] The initial brightness is normalized, and then the normalized initial brightness is integerized to obtain the single-attenuation brightness of each grayscale point.

[0027] In one possible implementation of the first aspect, the method further includes:

[0028] The grayscale binding point of the first bit is converted to the grayscale binding point of the second bit, and the second bit is greater than the first bit.

[0029] Based on the same inventive concept, in a second aspect, embodiments of this application also provide a display panel aging compensation device, comprising:

[0030] The data acquisition module is used to acquire the brightness of the display panel at different lighting times;

[0031] The debugging module is used to determine the target attenuation formula corresponding to the display panel from multiple preset attenuation formulas based on the brightness of the display panel at different lighting times. The preset attenuation formula is used to characterize the correspondence between the lighting time and brightness of the display panel.

[0032] The compensation determination module is used to determine the compensation value of the display panel under the target lighting time based on the target attenuation relationship.

[0033] Based on the same inventive concept, in a third aspect, embodiments of this application also provide an electronic device, including: a processor and a memory storing computer program instructions, wherein the processor executes the computer program instructions to implement the display panel aging compensation method as described in any embodiment of the first aspect.

[0034] Based on the same inventive concept, in a fourth aspect, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the display panel aging compensation method as described in any embodiment of the first aspect.

[0035] According to the display panel aging compensation method, apparatus, device, and storage medium provided in the embodiments of this application, since the target attenuation relationship is determined by selecting from multiple preset attenuation relationships based on the actual brightness of the display panel at different lighting times, compared to directly compensating the display panel according to a uniform attenuation relationship, the target attenuation relationship in this application is more in line with the actual attenuation of the display panel. Therefore, the compensation value at the target lighting time determined according to the target attenuation relationship is more accurate, thereby improving the aging compensation accuracy, which is conducive to achieving more accurate compensation, improving the display effect, and improving the "burn-in" phenomenon. Attached Figure Description

[0036] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0037] Figure 1 This illustration shows a flowchart of a display panel aging compensation method provided in an embodiment of this application;

[0038] Figure 2 This illustration shows another flowchart of the display panel aging compensation method provided in an embodiment of this application;

[0039] Figure 3 This illustration shows another flowchart of the display panel aging compensation method provided in an embodiment of this application;

[0040] Figure 4 This illustration shows another flowchart of the display panel aging compensation method provided in an embodiment of this application;

[0041] Figure 5 This illustration shows another flowchart of the display panel aging compensation method provided in an embodiment of this application;

[0042] Figure 6 This illustration shows a structural schematic diagram of a display panel aging compensation device provided in an embodiment of this application;

[0043] Figure 7 This illustration shows another structural schematic diagram of the display panel aging compensation device provided in an embodiment of this application;

[0044] Figure 8 This illustration shows a structural diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0045] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0047] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0048] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0049] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the related technologies:

[0050] OLED display panels boast numerous advantages such as self-illumination, fast response, high brightness, and thinness, gradually becoming the mainstream in the display field. However, as OLED display panels are used for longer periods, they undergo aging. Furthermore, with increasing size, the manufacturing process becomes more difficult to control, and deviations in this process can lead to decreased image uniformity and uneven aging of sub-pixels, resulting in varying degrees of brightness decay and causing "burn-in." Burn-in refers to the phenomenon where a static image remains on the display panel after prolonged display. While the individual pixel decay is usually very slight, the rate of decay differs between bright and dark areas. If the brightness difference is significant and the display remains static for an extended period, this difference in brightness decay becomes increasingly pronounced, potentially resulting in burn-in, also known as persistent image retention, and ultimately leading to poor display quality on the OLED panel.

[0051] To address the "burn-in" phenomenon, brightness compensation can be achieved using de-burn-in (DBI) technology. However, this technology still suffers from inaccurate compensation.

[0052] To address the aforementioned problems, this application provides a display panel aging compensation method, apparatus, device, and storage medium, which can improve the accuracy of aging compensation, thereby facilitating more precise compensation and improving display performance. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and display apparatus.

[0053] First, we introduce the display panel aging compensation method provided in the embodiments of this application.

[0054] Figure 1 This diagram illustrates a flowchart of a display panel aging compensation method provided in an embodiment of this application. Figure 1 As shown, the display panel aging compensation method provided in this application embodiment includes steps S110 to S130.

[0055] S110, Obtain the brightness of the display panel at different lighting times;

[0056] S120, based on the brightness of the display panel at different lighting times, determines the target attenuation formula corresponding to the display panel from multiple preset attenuation formulas. The preset attenuation formula is used to characterize the correspondence between the lighting time and brightness of the display panel.

[0057] S130, determine the compensation value of the display panel under the target lighting time according to the target attenuation formula.

[0058] The specific implementation methods of the above steps S110 to S130 will be described in detail below.

[0059] According to the display panel aging compensation method provided in the embodiments of this application, since the target attenuation relationship is determined by selecting from multiple preset attenuation relationships based on the actual brightness of the display panel at different lighting times, compared to directly compensating the display panel according to a uniform attenuation relationship, the target attenuation relationship in this application is more in line with the actual attenuation of the display panel. Therefore, the compensation value at the target lighting time determined according to the target attenuation relationship is more accurate, thereby improving the aging compensation accuracy, which is conducive to achieving more accurate compensation, improving the display effect, and improving the "burn-in" phenomenon.

[0060] The specific implementation methods for each of the above steps are described below.

[0061] First, let's introduce the S110.

[0062] First, turn on the display panel to show the test screen. For example, if the display panel has 8 grayscale bits, it can display 256 grayscale levels from 0 to 255. The grayscale level of the test screen can be any grayscale level from 0 to 255.

[0063] The brightness of the display panel can be collected at regular intervals to obtain the brightness of the display panel at different lighting times. For example, the brightness of the display panel can be collected every 3 seconds, 6 seconds, or 16 seconds, and the brightness at different time points can be recorded and saved.

[0064] It is understood that a display panel may include multiple sub-pixels, and the brightness of the display panel in this article can be understood as the brightness of the sub-pixels in the display panel.

[0065] As an example, some gray levels can be selected as gray level binding points. In subsequent steps, the target attenuation relationship corresponding to multiple gray level binding points can be determined. Specifically, S110 may include: making the display panel alternately display test images with different gray level binding points, and obtaining the brightness of the test images with different gray level binding points under different lighting times.

[0066] Understandably, in S110, a longer display panel illumination time is more conducive to the accuracy of the target attenuation formula. For example, to determine the target attenuation formula for each of 10 grayscale binding points, the brightness of each grayscale binding point needs to be collected under different illumination times over 100 hours. The test images of the 10 grayscale binding points can be displayed alternately over 100 hours, and the brightness corresponding to each grayscale binding point's image can be collected while displaying the test image for each grayscale binding point. Compared to continuously displaying the test image for each grayscale binding point for 100 hours, the alternating display method saves testing time, and the brightness corresponding to the 10 grayscale binding points is essentially collected within the same time period, thus facilitating the determination of the target attenuation formula for each grayscale binding point within the same time period.

[0067] Next, let's introduce the S120.

[0068] Figure 2 This diagram illustrates another flowchart of the display panel aging compensation method provided in an embodiment of this application. In some optional embodiments, such as... Figure 2 As shown, S120 may specifically include S121 and S122.

[0069] S121, based on the brightness of the display panel at different lighting times, select a preset attenuation formula that has the same brightness attenuation trend as the display panel from multiple preset attenuation formulas as a candidate attenuation formula;

[0070] S122, based on the brightness of the display panel at different lighting times, adjust the coefficients in the candidate attenuation formula to obtain the target attenuation formula.

[0071] In this embodiment, the coefficients of the selected preset attenuation relationship are adjusted so that the target attenuation relationship is more consistent with the attenuation of the display panel, further ensuring the accuracy of the compensation value under the target lighting time determined according to the target attenuation relationship, which can further improve the aging compensation accuracy and is more conducive to achieving more accurate compensation.

[0072] Multiple preset attenuation equations correspond to different brightness attenuation trends. As an example, these preset attenuation equations may include exponential attenuation equations, polynomial attenuation equations, and linear attenuation equations. Exponential attenuation equations correspond to exponential attenuation trends, polynomial attenuation equations correspond to polynomial attenuation trends, and linear attenuation equations correspond to linear attenuation trends.

[0073] In S121, the brightness decay curve of the display panel can be fitted based on the actual brightness of the display panel at different lighting times, and then the brightness decay trend of the display panel in that time period can be determined. Thus, the decay relationship formula that conforms to the brightness decay trend of the display panel can be selected from multiple preset decay relationships.

[0074] It is understood that, according to the embodiments of this application, a decay relationship formula that conforms to the brightness decay trend of the display panel at different stages can be selected.

[0075] For example, the exponential decay relationship can be expressed as y = a * e bx ±c, the polynomial decay relationship can be expressed as y=a*x 2 The linear attenuation relationship can be expressed as y = ax ± b, where x represents time, y represents brightness, and a, b, and c represent coefficients in the relationship.

[0076] Multiple preset attenuation equations can be stored in memory, such as flash memory. The initial values ​​of the coefficients in each preset attenuation equation can be empirical values. For candidate attenuation equations, the coefficients in the candidate attenuation equations can be adjusted according to the brightness of the display panel at different lighting times to obtain the target attenuation equation. For example, the attenuation curve corresponding to the target attenuation equation can be made to basically coincide with the brightness attenuation curve fitted based on the actual brightness of the display panel at different lighting times.

[0077] Next, let's introduce the S130.

[0078] As described above, the display panel may include multiple grayscale binding points. Figure 3 This diagram illustrates yet another flowchart of the display panel aging compensation method provided in an embodiment of this application. For any grayscale binding point, such as Figure 3 As shown, S130 may specifically include S131 to S133.

[0079] S131. Based on the target attenuation relationship corresponding to the gray-level binding point, determine the compensation lookup table corresponding to the gray-level binding point. The compensation lookup table includes the correspondence between the brightness attenuation characterization value and the compensation value. The brightness attenuation characterization value is determined based on the brightness attenuation value and attenuation time corresponding to the gray-level binding point.

[0080] S132, Determine the brightness attenuation characterization value corresponding to the grayscale binding point based on the target lighting time;

[0081] S133, Based on the brightness attenuation characterization value corresponding to the grayscale binding point, determine the compensation value of the grayscale binding point under the target lighting time from the compensation lookup table.

[0082] The specific implementation methods of the above steps S131 to S133 will be described in detail below.

[0083] In this embodiment, since the target attenuation formula is more consistent with the attenuation trend of the display panel, the compensation lookup table determined according to the target attenuation formula is more accurate, thereby further ensuring the accuracy of the compensation value, further improving the aging compensation accuracy, and making it more conducive to achieving more precise compensation.

[0084] Figure 4 This diagram illustrates yet another flow chart of the display panel aging compensation method provided in this application. As an example, such as... Figure 4 As shown, S131 may specifically include S1311 to S1317.

[0085] S1311, Obtain the brightness of grayscale binding points at different lighting times, wherein the brightness at at least one lighting time is determined according to the target attenuation formula;

[0086] S1312, subtract the brightness at adjacent lighting times to obtain the first correspondence between the brightness attenuation value of the grayscale binding point and the lighting time;

[0087] S1313, obtain the initial brightness of the grayscale binding point at the initial lighting time, and determine the initial brightness of multiple preset grayscales at the initial lighting time, wherein the preset grayscale is greater than the grayscale binding point.

[0088] S1314, Calculate the initial brightness difference between multiple preset gray levels and gray level binding points;

[0089] S1315, Substitute the initial brightness difference into the brightness attenuation value in the first correspondence to obtain the first attenuation time between the gray level binding point and multiple preset gray levels.

[0090] S1316, determine the first attenuation number of grayscale binding points within the first attenuation time, and determine the single attenuation brightness of grayscale binding points.

[0091] S1317, the product of the first attenuation number and the brightness of a single attenuation is used as the brightness attenuation characterization value in the compensation lookup table, and the difference between the preset gray level and the gray level binding point is used as the compensation value in the compensation lookup table.

[0092] According to the embodiments of this application, the compensation lookup table can be accurately determined.

[0093] As an example, taking the display panel's grayscale bit width as 8 bits, grayscale values ​​0, 1, 3, 7, 15, 23, 31, 47, 63, 79, 111, 143, 207, 239, and 255 can be selected as grayscale binding points within the 0-255 grayscale range of the display panel.

[0094] The display panel may include sub-pixels of multiple colors, for example, the display panel may include red sub-pixels, blue sub-pixels and green sub-pixels.

[0095] In this embodiment and the embodiments below, the grayscale binding point is 239 grayscale, and the red sub-pixel of the display panel is taken as an example. In S1311, the brightness of the red sub-pixel at 239 grayscale and at different lighting times can be obtained.

[0096] To better understand this application, Table 1 is used as an example, showing the different illumination times (Time(Hr)) for the red sub-pixel at grayscale 239 (time unit in hours), and some values ​​of the brightness R239 Lv for the red sub-pixel at grayscale 239. It can be understood that the brightness gradually decreases as the illumination time increases. Furthermore, due to limitations in data acquisition, it may not be possible to obtain actual brightness data for every illumination time. The brightness values ​​for some illumination times in Table 1 can be calculated based on the target attenuation formula.

[0097] Table 1

[0098] Serial Number Time (Hr) R239 Lv Serial Number Time (Hr) R239 Lv 1 0 Lv1 12 23.8 Lv12 2 0.8 Lv2 13 25.6 Lv13 3 1.4 Lv3 14 26.7 Lv14 4 1.9 Lv4 15 28 Lv15 5 2.5 Lv5 16 45.8 Lv16 6 3.6 Lv6 17 47.8 Lv17 7 4.1 Lv7 18 49.4 Lv18 8 4.9 Lv8 19 53 Lv19 9 5.4 Lv9 20 117.6 Lv20 10 22 Lv10 21 149.6 Lv21 11 23 Lv11 22 198.9 Lv22

[0099] It should be noted that Table 1 and the tables listed below are not intended to limit this application.

[0100] To better understand S1312, taking the values ​​shown in Table 1 as an example, we can subtract the brightness corresponding to the previous lighting time from the brightness corresponding to the next lighting time in adjacent lighting times, and use the difference as the brightness attenuation value of the next lighting time.

[0101] For example, subtracting the brightness Lv1 corresponding to the lighting time of 0.0 from the brightness Lv2 corresponding to the lighting time of 0.8 yields the brightness decay value corresponding to the lighting time of 0.8; subtracting the brightness Lv3 corresponding to the lighting time of 1.4 from the brightness Lv2 corresponding to the lighting time of 0.8 yields the brightness decay value corresponding to the lighting time of 1.4; and so on, thus obtaining the first correspondence between the brightness decay value and the lighting time.

[0102] For example, the first correspondence between the brightness decay value and the lighting time can be shown in Table 2. In addition, for ease of explanation, Table 2 shows the specific value of the brightness decay value ΔLv as an example.

[0103] Table 2

[0104] Serial Number Time (Hr) ΔLv Serial Number Time (Hr) ΔLv 1 0.0 — 12 23.8 0.666 2 0.8 0.167 13 25.6 0.683 3 1.4 0.3 14 26.7 0.7 4 1.9 0.4 15 28.0 0.716 5 2.5 0.433 16 45.8 0.983 6 3.6 0.466 17 47.8 1.066 7 4.1 0.5 18 49.4 1.116 8 4.9 0.533 19 53.0 1.166 9 5.4 0.566 20 117.6 1.266 10 22.0 0.6 21 149.6 1.399 11 23.0 0.633 22 198.9 1.782

[0105] In S1313, multiple preset gray levels can be between two adjacent gray level binding points. For example, for gray level binding point 239, multiple preset gray levels can be gray levels between 239 and 255. Multiple preset gray levels can be sequentially increased.

[0106] In some optional embodiments, in order to improve the compensation accuracy, the display panel aging compensation method provided in this application embodiment may further include: converting the grayscale binding point of the first bit to the grayscale binding point of the second bit, wherein the second bit is greater than the first bit.

[0107] For example, the first bit can be 8 bits, and the second bit can be 10 bits. Gray level binding point 239 is converted to gray level 956 in 10 bits. As shown in Table 3, multiple preset gray levels can include 957 to 977. The preset gray levels shown in Table 3 may only be a partial list of preset gray levels.

[0108] Table 3

[0109]

[0110]

[0111] For example, the initial brightness Lv0-1 of grayscale point 239 (converted to grayscale 956) at the initial lighting time is 128.648, and the initial brightness Lv0 of grayscale point 255 (converted to grayscale 1020) at the initial lighting time is 151.605. Based on the initial brightness of grayscale 956 and grayscale 1020, the initial brightness Lv0-2 to Lv0-22 of multiple preset grayscales 957 to 977 at the initial lighting time can be determined by using the linear difference method. For example, Lv0 in Table 3 represents the initial brightness.

[0112] In S1314, the initial brightness difference ΔLv0 between multiple preset gray levels 957 to 977 and gray level binding point 239 (which is converted to gray level 956) can be calculated. For ease of explanation, Table 3 shows the specific values ​​of each initial brightness difference ΔLv0 as an example.

[0113] In S1315, the initial brightness difference value ΔLv0 in Table 3 can be substituted into the column containing the brightness attenuation value ΔLv in the first correspondence shown in Table 2 to obtain the first attenuation time Δt between the grayscale binding point and multiple preset grayscales as shown in Table 4. For example, the initial brightness difference value corresponding to the preset grayscale 957 is 0.359. Substituting 0.359 into the column containing ΔLv in Table 2, 0.359 is between 0.3 and 0.4 in Table 2. The time corresponding to 0.3 is 1.4, and the time corresponding to 0.4 is 1.9. The first attenuation time Δt corresponding to 0.359 can be determined by interpolation. For example, the first attenuation time Δt corresponding to 0.359 can be equal to (0.359*1.9) / 0.4. For example, the initial brightness difference corresponding to the preset grayscale 958 is 0.717. Substituting 0.717 into the column containing ΔLv in Table 2, 0.717 falls between 0.716 and 0.983 in Table 2. The time corresponding to 0.716 is 28.0, and the time corresponding to 0.983 is 45.8. The first decay time Δt corresponding to 0.717 can be determined using interpolation. For example, the first decay time Δt corresponding to 0.717 can be equal to (0.717*28) / 0.716. The first decay time corresponding to other preset grayscales can be determined in the same way, which will not be explained in detail here.

[0114] Table 4

[0115]

[0116] The inventors discovered that the brightness decay of each grayscale level follows a certain proportion. In some optional embodiments, in S1316, determining the single-time decay brightness of the grayscale binding point can specifically include: obtaining the initial brightness of each grayscale binding point on the display panel at the initial lighting time; normalizing the initial brightness; and integerizing the normalized initial brightness to obtain the single-time decay brightness of each grayscale binding point. In the embodiments of this application, the single-time decay brightness corresponding to each grayscale binding point can be determined according to a uniform proportion.

[0117] The initial brightness Lv0 of each grayscale point at the initial illumination time is shown in Table 5. To improve compensation accuracy, the grayscale points of the first bit can be converted to grayscale points of the second bit. Taking the first bit as 8 bits and the second bit as 10 bits as an example, the grayscale of the converted grayscale points is shown in Table 6. It can be understood that the initial brightness of each grayscale point remains unchanged before and after conversion. For example, after grayscale point 239 is converted to 956, its brightness is still 128.648, and after grayscale point 255 is converted to 1020, its brightness is still 151.605. The initial brightness can be normalized, for example, by dividing each initial brightness by the largest initial brightness. In the examples in Tables 5 and 6, the largest initial brightness is the initial brightness corresponding to grayscale point 255.

[0118] Table 5

[0119]

[0120]

[0121] Table 6

[0122] Serial Number grayscale Lv0 1 0 0 2 4 0 3 12 0 4 28 0 5 60 0.0012 6 92 0.0037 7 124 0.0076 8 188 0.0198 9 252 0.0386 10 316 0.0647 11 444 0.142 12 572 0.2543 13 828 0.6063 14 956 0.8486 15 1020 1

[0123] To facilitate calculation, the normalized initial brightness can be integerized, for example, as shown in Table 6.

[0124] The initial brightness values ​​shown are all multiplied by 511 and rounded to obtain the initial brightness data as shown in Table 7. Since the initial brightness of some grayscale binding points is 0, they can be discarded, resulting in the initial brightness data shown in Table 8. The initial brightness corresponding to each grayscale binding point in Table 8 can be used as the single-time decay brightness. For example, the grayscale corresponding to binding point grayscale 239 is 956, and the value corresponding to grayscale 956 is 434, so the single-time decay brightness corresponding to binding point grayscale 239 can be 434. As another example, the grayscale corresponding to binding point grayscale 255 is 1020, and the value corresponding to grayscale 1020 is 511, so the single-time decay brightness corresponding to binding point grayscale 255 can be 511.

[0125] Table 7

[0126] Serial Number grayscale Lv0 1 0 0 2 4 0 3 12 0 4 28 0 5 60 1 6 92 2 7 124 3 8 188 10 9 252 20 10 316 33 11 444 73 12 572 130 13 828 310 14 956 434 15 1020 511

[0127] Table 8

[0128]

[0129]

[0130] For example, in S1316, determining the first attenuation count within the first attenuation time for grayscale binding points can specifically include: obtaining the interval time for acquiring brightness, and using the ratio of the first attenuation time to the interval time as the first attenuation count. For example, if the first attenuation time is 1.7 hours and the interval time is 16 seconds, then the first attenuation count is 382.5. Thus, the first attenuation count corresponding to each first attenuation time Δt in Table 4 can be calculated.

[0131] For example, in S1317, as shown in Table 4, the first attenuation time of the preset grayscale 957 and the bound-point grayscale 956 is 1.7. The corresponding first attenuation count c1 can be calculated based on the interval time of the collected brightness. As shown in Table 8, the single attenuation brightness corresponding to the bound-point grayscale 956 is 434. The product of the first attenuation count c1 and 434 can be used as the brightness attenuation characterization value L1, and the difference 1 between the preset grayscale 957 and the bound-point grayscale 956 is used as the compensation value. As another example, as shown in Table 4, the first attenuation time of the preset grayscale 958 and the bound-point grayscale 956 is 28.1. The corresponding first attenuation count c2 can be calculated based on the interval time of the collected brightness. As shown in Table 8, the single attenuation brightness corresponding to the bound-point grayscale 956 is 434. The product of the first attenuation count c2 and 434 can be used as the brightness attenuation characterization value L2, and the difference 2 between the preset grayscale 956 and the bound-point grayscale 956 is used as the compensation value. By analogy, the brightness attenuation characterization value and compensation value in the compensation lookup table can be determined.

[0132] The compensation lookup table corresponding to grayscale 956 of the bound point is shown in Table 9.

[0133] Table 9

[0134]

[0135]

[0136] Figure 5 This diagram illustrates yet another flow chart of the display panel aging compensation method provided in this application. In some optional embodiments, such as... Figure 5 As shown, S132 may specifically include S1321 and S1322.

[0137] S1321, Determine the number of times the grayscale binding point decays within the target illumination time, and determine the brightness of the grayscale binding point at a single decay.

[0138] S1322, the product of the target attenuation number and the brightness of a single attenuation is used as the brightness attenuation characterization value corresponding to the grayscale binding point.

[0139] According to the embodiments of this application, the brightness attenuation characterization value can be accurately determined.

[0140] For example, the specific method for determining the single-time attenuation brightness of grayscale binding points in S1321 can be the same as the specific method for determining the single-time attenuation brightness of grayscale binding points in S1316 described above, and will not be elaborated on here.

[0141] In S1321, the target attenuation count for the grayscale point within the target illumination time is determined. Specifically, this may include: acquiring the interval time for sampling brightness, and using the ratio of the target illumination time to the interval time as the target attenuation count. This interval time is equal to the interval time required to determine the first attenuation count in S1316. For example, to determine the brightness attenuation characterization value corresponding to grayscale point 956, taking a target illumination time of 839 hours (839 hours equals 3020400 seconds) and a brightness sampling interval of 16 seconds as an example, the target attenuation count can be equal to the ratio of 3020400 to 16, that is, the target attenuation count corresponding to grayscale point 956 is 188775.

[0142] Then, in S1322, the product of the target attenuation number 188775 corresponding to gray level binding point 956 and the single attenuation brightness 434 corresponding to gray level binding point 956 is used as the brightness attenuation characterization value corresponding to gray level binding point 956, that is, the brightness attenuation characterization value corresponding to gray level binding point 956 is 81928350.

[0143] In S133, based on the brightness attenuation characterization value 81928350 corresponding to the grayscale binding point 956, the compensation value corresponding to the brightness attenuation characterization value 81928350 is found or determined in the compensation lookup table. For example, the brightness attenuation characterization value 81928350 is between the brightness attenuation characterization values ​​L10 and L11 shown in Table 9.

[0144] The compensation value corresponding to the brightness attenuation characterization value L10 is 10, and the compensation value corresponding to the brightness attenuation characterization value L11 is 11. Therefore, the compensation value corresponding to the brightness attenuation characterization value 81928350 can be determined using interpolation. Since the compensation value is a grayscale value, the compensation value corresponding to the brightness attenuation characterization value 81928350 should be rounded down. For example, if the compensation value corresponding to the brightness attenuation characterization value 81928350 is 10, then the grayscale value of the compensation value corresponding to the grayscale binding point 956 is 10 when the target illumination time of the display panel is 839 hours. Further, the 10-bit compensation value of 10 can be converted to an 8-bit compensation value, thus obtaining the compensation value corresponding to the grayscale binding point 239 when the target illumination time of the display panel is 839 hours.

[0145] In the above example, taking the red sub-pixel and grayscale binding point 239 as an example, the compensation value determination method for other color sub-pixels and other grayscale binding points can be the same as the compensation value determination method for the red sub-pixel and grayscale binding point 239, and will not be repeated here.

[0146] Furthermore, the compensation value corresponding to the gray levels between adjacent gray level binding points can be determined based on the compensation values ​​of adjacent gray level binding points using linear interpolation. Of course, it can also be determined using other methods, and this application does not limit this.

[0147] Based on the same inventive concept, this application also provides a display panel aging compensation device. Figure 6 This diagram illustrates a structural schematic of a display panel aging compensation device provided in an embodiment of this application. Figure 6 As shown, the display panel aging compensation device 600 provided in this application embodiment may include a data acquisition module 601, a debugging module 602, and a compensation determination module 603.

[0148] Data acquisition module 601 is used to acquire the brightness of the display panel at different lighting times;

[0149] The debugging module 602 is used to determine the target attenuation formula corresponding to the display panel from multiple preset attenuation formulas based on the brightness of the display panel at different lighting times. The preset attenuation formula is used to characterize the correspondence between the lighting time and brightness of the display panel.

[0150] The compensation determination module 603 is used to determine the compensation value of the display panel under the target lighting time according to the target attenuation relationship.

[0151] According to the display panel aging compensation device provided in the embodiments of this application, since the target attenuation relationship is determined by selecting from multiple preset attenuation relationships based on the actual brightness of the display panel at different lighting times, compared to directly compensating the display panel according to a uniform attenuation relationship, the target attenuation relationship in this application is more in line with the actual attenuation of the display panel. Therefore, the compensation value at the target lighting time determined according to the target attenuation relationship is more accurate, thereby improving the aging compensation accuracy, which is conducive to achieving more accurate compensation, improving the display effect, and improving the "burn-in" phenomenon.

[0152] In some possible implementations, multiple preset attenuation formulas correspond to different brightness attenuation trends. The debugging module 602 can specifically be used for:

[0153] Based on the brightness of the display panel at different lighting times, a preset attenuation relationship that has the same brightness attenuation trend as the display panel is selected from multiple preset attenuation relationship expressions as a candidate attenuation relationship expression;

[0154] Based on the brightness of the display panel at different lighting times, the coefficients in the candidate attenuation formula are adjusted to obtain the target attenuation formula.

[0155] In some possible implementations, the display panel includes multiple grayscale binding points. For any given grayscale binding point, the debugging module 602 can be specifically used for:

[0156] Based on the target attenuation relationship corresponding to the gray-level binding point, the compensation lookup table corresponding to the gray-level binding point is determined. The compensation lookup table includes the correspondence between the brightness attenuation characterization value and the compensation value. The brightness attenuation characterization value is determined based on the brightness attenuation value and attenuation time corresponding to the gray-level binding point.

[0157] Based on the target illumination time, determine the brightness attenuation characterization value corresponding to the grayscale binding point;

[0158] Based on the brightness attenuation characterization value corresponding to the grayscale binding point, the compensation value of the grayscale binding point under the target lighting time is determined from the compensation lookup table.

[0159] In some possible implementations, the data acquisition module 601 can also be used to: acquire the brightness of grayscale dots at different lighting times, wherein the brightness at at least one lighting time is determined according to the target attenuation formula;

[0160] The debugging module 602 can be used to: subtract the brightness at adjacent lighting times to obtain the first correspondence between the brightness attenuation value corresponding to the grayscale binding point and the lighting time;

[0161] The data acquisition module 601 can also be used to: acquire the initial brightness of grayscale binding points at the initial lighting time, and determine the initial brightness of multiple preset grayscales at the initial lighting time, wherein the preset grayscales are greater than the grayscale binding points.

[0162] The debugging module 602 can be used to: calculate the initial brightness difference between multiple preset gray levels and gray level binding points; substitute each initial brightness difference into the brightness attenuation value in the first correspondence to obtain the first attenuation time between the gray level binding point and multiple preset gray levels; determine the first attenuation number of the gray level binding point within the first attenuation time, and determine the single attenuation brightness of the gray level binding point; use the product of the first attenuation number and the single attenuation brightness as the brightness attenuation characterization value in the compensation lookup table, and use the difference between the preset gray level and the gray level binding point as the compensation value in the compensation lookup table.

[0163] In some possible implementations, the debug module 602 may specifically be used for:

[0164] Determine the number of times the grayscale point decays within the target illumination time, and determine the brightness of each grayscale point decays.

[0165] The product of the target attenuation number and the brightness of a single attenuation is used as the brightness attenuation characterization value corresponding to the grayscale binding point.

[0166] In some possible implementations, the data acquisition module 601 can also be used to: acquire the initial brightness of each grayscale point of the display panel at the initial lighting time;

[0167] The debugging module 602 can be used to: normalize the initial brightness and integerize the normalized initial brightness to obtain the single-time decay brightness of each grayscale binding point.

[0168] In some possible implementations, such as Figure 7 As shown, the display panel aging compensation device 600 may also include a conversion module 604, which can be used to convert the grayscale binding point of the first bit to the grayscale binding point of the second bit, wherein the second bit is greater than the first bit.

[0169] The display panel aging compensation device in this application embodiment can be a device, or it can be a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. For example, mobile electronic devices can be mobile phones, tablets, laptops, PDAs, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), etc., while non-mobile electronic devices can be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc. This application embodiment does not impose specific limitations.

[0170] The display panel aging compensation device provided in this application embodiment can achieve... Figure 1 To avoid repetition, the various processes in the embodiment of the display panel aging compensation method will not be described again here.

[0171] Figure 8 A schematic diagram of the hardware structure of the electronic device provided in an embodiment of this application is shown.

[0172] An electronic device may include a processor 801 and a memory 802 storing computer program instructions.

[0173] Specifically, the processor 801 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of the present invention.

[0174] Memory 802 may include mass storage for data or instructions. For example, and not limitingly, memory 802 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 802 may include removable or non-removable (or fixed) media. Where appropriate, memory 802 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 802 is non-volatile solid-state memory. In a particular embodiment, memory 802 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these. Exemplarily, memory may include non-volatile transient memory.

[0175] The processor 801 reads and executes computer program instructions stored in the memory 802 to implement any of the display panel aging compensation methods in the above embodiments.

[0176] In one example, the electronic device may also include a communication interface 803 and a bus 810. For example, Figure 8 As shown, the processor 801, memory 802, and communication interface 803 are connected through bus 810 and complete communication with each other.

[0177] The communication interface 803 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of the present invention.

[0178] Bus 810 includes hardware, software, or both, that couples components of an electronic device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 810 may include one or more buses. Although specific buses are described and illustrated in embodiments of the invention, the invention contemplates any suitable bus or interconnect.

[0179] This electronic device can execute the display panel aging compensation method in the embodiments of this application, thereby achieving the combination of Figure 1 and Figure 6 The description includes a display panel aging compensation method and a display panel aging compensation device.

[0180] This application also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program can implement the display panel aging compensation method described in the above embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here. The aforementioned computer-readable storage medium may include read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and is not limited thereto.

[0181] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Computer-readable medium" can include any medium capable of storing or transmitting information. Examples of computer-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0182] According to embodiments of this application, the computer-readable storage medium may be a non-transitory computer-readable storage medium.

[0183] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0184] The aspects of this application have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0185] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel aging compensation method, characterized in that, The method comprises: obtaining luminance of a display panel at different lighting times; determining a target decay relationship of the display panel from a plurality of preset decay relationships according to the luminance of the display panel at different lighting times, the preset decay relationship being used to represent a corresponding relationship between the lighting time and the luminance of the display panel; determining a compensation value of the display panel at a target lighting time according to the target decay relationship; the display panel comprises a plurality of gray scale binding points, and for any one of the gray scale binding points, the determining of the compensation value of the display panel at the target lighting time according to the target decay relationship comprises: determining a compensation lookup table corresponding to the gray scale binding point according to the target decay relationship corresponding to the gray scale binding point, the compensation lookup table comprising a corresponding relationship between a luminance decay representation value and a compensation value, wherein the luminance decay representation value is determined according to a luminance decay value corresponding to the gray scale binding point and a decay time; determining a luminance decay representation value corresponding to the gray scale binding point according to the target lighting time; determining the compensation value of the gray scale binding point at the target lighting time from the compensation lookup table according to the luminance decay representation value corresponding to the gray scale binding point.

2. The method of claim 1, wherein, the plurality of preset decay relationships correspond to different luminance decay trends, and the determining of the target decay relationship of the display panel from the plurality of preset decay relationships according to the luminance of the display panel at different lighting times comprises: selecting a preset decay relationship identical to the luminance decay trend of the display panel from the plurality of preset decay relationships as a candidate decay relationship according to the luminance of the display panel at different lighting times; adjusting coefficients in the candidate decay relationship according to the luminance of the display panel at different lighting times to obtain the target decay relationship.

3. The method of claim 1, wherein, the determining of the compensation lookup table corresponding to the gray scale binding point according to the target decay relationship corresponding to the gray scale binding point comprises: obtaining luminance of the gray scale binding point at different lighting times, wherein the luminance at at least one lighting time is determined according to the target decay relationship; subtracting the luminance at adjacent lighting times to obtain a first corresponding relationship between the luminance decay value and the lighting time corresponding to the gray scale binding point; obtaining an initial luminance of the gray scale binding point at an initial lighting time, and determining initial luminances of a plurality of preset gray scales at the initial lighting time, the preset gray scales being greater than the gray scale binding point; calculating each initial luminance difference between the plurality of preset gray scales and the gray scale binding point; substituting each initial luminance difference into the luminance decay value in the first corresponding relationship to obtain each first decay time between the gray scale binding point and the plurality of preset gray scales; determining a first decay number of the gray scale binding point within the first decay time, and determining a single decay luminance of the gray scale binding point; multiplying the first decay number and the single decay luminance to obtain a luminance decay representation value in the compensation lookup table, and taking the difference between the preset gray scale and the gray scale binding point as a compensation value in the compensation lookup table.

4. The method of claim 1, wherein, The method further comprises: The method further comprises: The method further comprises:

5. The method according to claim 3 or 4, characterized in that, The method further comprises: The method further comprises: The method further comprises:

6. The method of claim 1, wherein, The method further comprises: The method further comprises:

7. A display panel aging compensation device, characterized by comprising: a display panel aging compensation circuit according to any one of claims 1 to 6. The method further comprises: The method further comprises: The method further comprises: The method further comprises: The method further comprises: The method further comprises:

8. An electronic device, comprising: The method further comprises: The method further comprises:

9. 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