Method, apparatus and liquid crystal display panel for processing boundary of display screen afterimage

Abstract

Embodiments of the present application relate to a method, device and liquid crystal display panel for processing the afterimage boundary of a display screen. The method includes: identifying a background area and a non-background area in a target display screen; when it is determined that the non-background area is an afterimage area, determining whether the afterimage area meets a set condition; when the afterimage area meets the set condition, moving the afterimage area to a target position according to a set movement rule to generate a target transition area; performing blurring processing on the target transition area so as to fade the afterimage boundary in the afterimage area. By identifying the afterimage area in the display screen and moving the afterimage area in multiple directions, the purpose of fading the afterimage boundary is achieved. Thus, the technical effect of improving the obvious problem of the afterimage boundary caused by the large contrast at the boundary of the display screen, increasing the display quality of the product and improving the competitiveness of the product can be realized.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of image quality processing of display panels, and in particular, to a method and device for processing the afterimage boundary of a display screen and a liquid crystal display panel. Background Art

[0002] When the display screen is in a static picture, pixels are in a certain fixed state for a long time. That is, when each pixel of the image is displayed on the screen, there are differences in brightness and darkness, so the aging speed of each pixel point on each screen is different. If there are stable regional brightness and darkness differences (differences in brightness between the local area and the surrounding area) or problems with long maintenance time of pixel points, the afterimage phenomenon of the screen will be obvious.

[0003] In the actual application of current OLED displays, when users use a certain scenario for a long time, such as current Android smartphones, since the system status bar remains unchanged for a long time and is mainly used to display some conventional information such as battery power, signal, and time, after the device has been used for a long time, when switching the mobile phone screen to a full-color solid screen, traces of the remaining icons such as battery power and signal may be faintly seen at the position of the status bar, resulting in an obvious afterimage boundary phenomenon. Summary of the Invention

[0004] In view of this, to solve the above technical problem of the afterimage boundary in the display panel, the embodiments of the present application provide a method and device for processing the afterimage boundary of a display screen and a liquid crystal display panel.

[0005] In a first aspect, the embodiments of the present application provide a method for processing the afterimage boundary of a display screen, including:

[0006] Identifying a background area and a non-background area in a target display picture;

[0007] When it is determined that the non-background area is an afterimage area, determining whether the afterimage area meets a set condition;

[0008] When the afterimage area meets the set condition, moving the afterimage area to a target position according to a set moving rule to generate a target transition area;

[0009] Performing blurring processing on the target transition area to fade the afterimage boundary in the afterimage area.

[0010] In a possible implementation manner, after performing the step of identifying a background area and a non-background area in a target display picture, the method further includes:

[0011] Determining whether the non-background area is an afterimage area;

[0012] Count the number of first pixels included in the non-background region, and determine the corresponding gray scale values of the first pixels in the non-background region;

[0013] Determine the gray scale values of the second pixels on the boundary of the non-background region;

[0014] Judge whether the gray scale difference between the first gray scale value and the second gray scale value is greater than a set gray scale threshold;

[0015] When the gray scale difference is greater than or equal to the gray scale threshold, determine that the non-background region is a residual image region;

[0016] When the gray scale difference is less than the gray scale threshold, determine that the non-background region is a non-residual image region.

[0017] In a possible implementation manner, the judging whether the residual image region meets the set conditions includes:

[0018] Generate a residual image self-check table according to the set display time parameter and gray scale difference parameter, and the residual image self-check table is used to characterize whether a residual image appears in the residual image region in the current display screen;

[0019] Judge whether the target display time t of the residual image region is greater than the reference display time T corresponding to the gray scale difference in the residual image self-check table;

[0020] When the target display time t is greater than the reference time T, determine that the residual image region meets the set conditions;

[0021] When the target display time t is less than the reference time T, determine that the residual image region does not meet the set conditions.

[0022] In a possible implementation manner, the moving the residual image region to a target position according to the set moving rules to generate a target transition region includes:

[0023] Set m moving directions according to the residual image region, and determine the corresponding reference display time T in the self-check table according to the gray scale difference in the residual image region;

[0024] When the residual image region is displayed for T / m time, move the residual image region M pixels in the first target direction among the set m moving directions to reach the first target position, and obtain a first-direction transition region;

[0025] When the first-direction transition region is displayed for (m - 1)T / m time, restore the first-direction transition region to the position of the residual image region;

[0026] The residual image area is moved in each direction respectively according to the same moving means, so that the moving operation of the residual image area is completed after mT time, and m transition areas are obtained.

[0027] In a possible implementation, the method further includes:

[0028] Determine the target overlapping area between the residual image area and the first-direction transition area;

[0029] Take the area of the residual image area that does not include the target overlapping area as the first remaining area;

[0030] Perform filling processing on the first remaining area according to a set target filling strategy.

[0031] In a possible implementation, the performing filling processing on the first remaining area according to a set target filling strategy includes:

[0032] Judge whether the first remaining area is a background area;

[0033] When the first remaining area is a background area, perform filling processing on the first remaining area according to the second pixel gray value in the background area;

[0034] When the first remaining area is not a background area, process the first remaining area according to the occluded picture.

[0035] In a possible implementation, the performing blurring processing on the target transition area includes:

[0036] Obtain the total area of the m transition areas;

[0037] Obtain the intersection of the total area and the residual image area to get the overlapping area;

[0038] Take the part of the total area excluding the overlapping area as the buffer area;

[0039] Fill and blur the pixel gray values in the buffer area according to a selected target pixel gray value, and the target pixel gray value is between the first pixel gray value and the second pixel gray value.

[0040] In a possible implementation, the method further includes:

[0041] When it is determined that the non-background area contains residual image areas with multiple different pixel gray values, calculate the minimum circumscribed rectangle area of the areas where all the residual image areas are located;

[0042] Performing the step of moving the afterimage area to a target position according to a set movement rule on the minimum circumscribed rectangle area to generate a target transition area.

[0043] In a second aspect, an embodiment of the present application provides a processing device for a display screen afterimage boundary, which is applied to any of the processing methods for the display screen afterimage boundary in the first aspect, and includes:

[0044] An identification module, configured to identify a background area and a non-background area in a target display screen;

[0045] A judgment module, configured to judge whether the afterimage area meets a set condition when it is determined that the non-background area is an afterimage area;

[0046] A movement processing module, configured to move the afterimage area to a target position according to a set movement rule to generate a target transition area when the afterimage area meets the set condition;

[0047] A fading processing module, configured to perform blurring processing on the target transition area so that the afterimage boundary in the afterimage area is faded.

[0048] In a third aspect, an embodiment of the present application provides a liquid crystal display panel, including an array substrate and a color filter substrate disposed in a cell, and a liquid crystal layer is disposed between the array substrate and the color filter substrate, including: the array substrate has the processing device for the display screen afterimage boundary as described in the second aspect.

[0049] The processing solution for the display screen afterimage boundary provided by the embodiment of the present application includes: identifying a background area and a non-background area in a target display screen; judging whether the afterimage area meets a set condition when it is determined that the non-background area is an afterimage area; moving the afterimage area to a target position according to a set movement rule to generate a target transition area when the afterimage area meets the set condition; performing blurring processing on the target transition area so that the afterimage boundary in the afterimage area is faded. By identifying the afterimage area in the display screen and moving the afterimage area in multiple directions, the purpose of fading the afterimage boundary is achieved. With this solution, the technical effect of improving the obvious problem of the afterimage boundary caused by the large contrast at the boundary of the display screen, increasing the display quality of the product, and improving the competitiveness of the product can be realized. Description of the Drawings

[0050] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments that conform to the present application, and are used together with the specification to explain the principles of the present application.

[0051] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0052] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0053] Figure 1 It is an effect diagram of the afterimage area of the display panel in the existing scenario;

[0054] Figure 2 It is a schematic flowchart of a method for processing the afterimage boundary of a display screen provided in Embodiment 1 of the present application;

[0055] Figure 3 It is a schematic flowchart of a method for processing the afterimage boundary of a display screen provided in Embodiment 2 of the present application;

[0056] Figure 4a It is an effect diagram of the image state of a method for processing the afterimage boundary of a display screen provided in Embodiment 2 of the present application;

[0057] Figure 4b It is an effect diagram of the image state of another method for processing the afterimage boundary of a display screen provided in Embodiment 2 of the present application;

[0058] Figure 4c It is an effect diagram of the image state of yet another method for processing the afterimage boundary of a display screen provided in Embodiment 2 of the present application;

[0059] Figure 4d It is an effect diagram of the image state of yet another method for processing the afterimage boundary of a display screen provided in Embodiment 3 of the present application;

[0060] Figure 5 It is a schematic flowchart of a method for processing the afterimage boundary of a display screen provided in Embodiment 3 of the present application;

[0061] Figure 6 It is an effect diagram of the buffer area of a method for processing the afterimage boundary of a display screen provided in Embodiment 2 of the present application;

[0062] Figure 7 It is an effect diagram of the image state of a method for processing the afterimage boundary of a display screen provided in Embodiment 4 of the present application;

[0063] Figure 8It is an image state effect diagram of a method for processing the residual image boundary of a display screen provided in the fourth embodiment of the present application;

[0064] Figure 9 It is a schematic structural diagram of a device for processing the residual image boundary of a display screen provided in the fifth embodiment of the present application;

[0065] Figure 10 It is a schematic structural diagram of a liquid crystal display panel provided in the sixth embodiment of the present application. Detailed implementation manners

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0067] The terms "including" and "having" in the embodiments of the present application are used to indicate an open inclusion meaning, and it means that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second", etc. are only used as labels and are not a limitation on the quantity of their objects. In addition, different elements and regions in the drawings are only schematically shown, so the present application is not limited to the sizes or distances shown in the drawings.

[0068] A residual image occurs when an OLED screen displays a certain static image for a long time. Since the image has uneven brightness and darkness, if the organic light-emitting materials on these screens emit light for too long, the image remaining from the static image will appear on the screen.

[0069] Figure 1 It is an effect diagram of the residual image area of the display panel in the existing scenario. According to Figure 1 The provided diagram shows that when the static image is displayed, there are differences in the brightness and darkness of each pixel of the image on the screen, so the aging speed of each pixel point of each screen is different. In the static image, black is Gray0 and white is Gray255. Maintaining such a state for a long time, when it is necessary to display an entire image with a gray scale of Gray127, then the shape of the static image will remain at the position of the white area in the static image, and this part of the display will be brighter than other parts, especially the boundary area, and the difference in the residual image boundary is very obvious.

[0070] To solve the problem of image retention caused by a static display screen remaining unchanged for a long time in the display screen, this application proposes a method for processing the image retention boundary of a display screen. By identifying the image retention area in the display screen and moving the image retention area in multiple directions, the purpose of fading the image retention boundary is achieved. With this solution, it is possible to improve the obvious problem of the image retention boundary caused by the large contrast at the boundary of the display screen, increase the display quality of the product, and improve the technical effect of the product competitiveness.

[0071] To facilitate the understanding of the embodiments of this application, the following will further explain with specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation to the embodiments of this application.

[0072] Figure 2 The following is a schematic flowchart of a method for processing the image retention boundary of a display screen provided in the first embodiment of this application. It is applied to the process of processing the image retention boundary of a display screen. According to Figure 2 The provided illustration, the steps of the method for processing the image retention boundary of a display screen specifically include:

[0073] S201. Identify the background area and non-background area in the target display screen.

[0074] This application is applied to the process of processing the boundary of the image retention area in a display screen. By identifying the image retention area in the display screen, determining the boundary of the image retention area, and performing regular moving operations on the image retention area in multiple directions, the remaining area is filled to achieve the purpose of reducing the image retention area and fading the image retention boundary.

[0075] The background area mentioned here can be understood as a large area with the same pixels in the display screen. The non-background area mentioned here can be understood as the area where the pixel values change following the update of the display screen.

[0076] Further, when the display screen is lit and the set display screen information is displayed, the pixel gray values in the corresponding display screen are identified, and then the background area and non-background area are obtained, providing reference data for the next step of determining whether there is an image retention area.

[0077] S202. When it is determined that the non-background area is the image retention area, determine whether the image retention area meets the set conditions.

[0078] The set conditions mentioned here can be understood as whether the display duration of the image retention area exceeds the set duration. When the display duration of the image retention area exceeds the set duration, it is determined that an image retention phenomenon occurs when the current display screen switches to the next frame; when the display duration of the image retention area does not exceed the set duration, it is determined that no image retention phenomenon occurs when the current display screen switches to the next frame.

[0079] Further, after identifying a residual image area in the display screen, it is determined whether the display time of the residual image area reaches a set time, as a basis for determining whether the residual image area will affect the display effect of the next frame of the display screen; when the display duration of the residual image area exceeds the set duration, it is determined that a residual image phenomenon will occur when the current display screen switches to the next frame; when the display duration of the residual image area does not exceed the set duration, it is determined that no residual image phenomenon will occur when the current display screen switches to the next frame.

[0080] S203. When the residual image area meets the set conditions, move the residual image area to the target position according to the set movement rule to generate a target transition area.

[0081] The movement rule mentioned here can be understood as moving regularly in multiple set directions. The target position mentioned here can be understood as the position reached after moving in any one direction according to the set movement rule. The target transition area mentioned here can be understood as the area where the target position in one direction is located after moving.

[0082] Further, when the display screen where the residual image area is located causes a residual image phenomenon to the user visually due to the static duration exceeding the set duration, the residual image area is moved sequentially in multiple set directions, with a target position corresponding to each direction. After moving the residual image area to the target position, the area where the residual image area is located is a transition area, and multiple transition areas are obtained after moving in multiple directions.

[0083] S204. Blur the target transition area to fade the boundary of the residual image in the residual image area.

[0084] The blurring process mentioned here can be understood as processing the pixel gray values in the residual image area after movement to achieve the purpose of fading the residual image area.

[0085] Further, compare the target transition area after the movement process with the residual image area before the movement, and modify the pixel gray values in the non-overlapping areas to achieve the purpose of fading the pixel gray values of the residual image area, and thus visually achieve the purpose of reducing the area of the residual image area, and at the same time, achieve the purpose of blurring the boundary of the residual image area.

[0086] The method for processing the afterimage boundary of a display screen provided by an embodiment of the present application includes identifying the background area and non-background area in a target display screen; when it is determined that the non-background area is an afterimage area, determining whether the afterimage area meets a set condition; when the afterimage area meets the set condition, moving the afterimage area to a target position according to a set movement rule to generate a target transition area; and blurring the target transition area so as to fade the afterimage boundary in the afterimage area. By identifying the afterimage area in the display screen and moving the afterimage area in multiple directions, the purpose of fading the afterimage boundary is achieved. With this solution, the problem of obvious afterimage boundary caused by large contrast at the boundary of the display screen can be solved, the display quality of the product can be improved, and the technical effect of enhancing the product competitiveness can be achieved.

[0087] Figure 3 It is a schematic flowchart of a method for processing the afterimage boundary of a display screen provided by the second embodiment of the present application. Figure 3 It is introduced based on the previous embodiment. According to Figure 3 the provided diagram, the steps of the method for processing the afterimage boundary of the display screen specifically include:

[0088] S301. Identify the background area and non-background area in the target display screen.

[0089] Further, when the display screen is lit and the set display screen information is displayed, the pixel gray values in the corresponding display screen are identified, and then the background area and non-background area are obtained, providing reference data for the next step of determining whether there is an afterimage area.

[0090] S302. Determine whether the non-background area is an afterimage area.

[0091] S303. Count the number of first pixels included in the non-background area and determine the corresponding first pixel gray value in the non-background area.

[0092] S304. Determine the second pixel gray value of the non-background area boundary.

[0093] S305. Determine whether the gray difference between the first gray value and the second gray value is greater than a set gray threshold.

[0094] S306. When the gray difference is greater than or equal to the gray threshold, determine that the non-background area is an afterimage area.

[0095] S307. When the gray difference is less than the gray threshold, determine that the non-background area is a non-afterimage area.

[0096] According to Figure 3The provided illustration reaches the boundary of the ghosting area by identifying and counting the pixel grayscale values and the number of pixels in the non-background area, and calculating the pixel grayscale values of the background area adjacent to the boundary of the non-background area. The grayscale difference is obtained by calculating the difference between the pixel values of the non-background area and the background area, and the magnitude of the grayscale difference is used to characterize the color difference degree between the background area and the non-background area. The larger the grayscale difference, the greater the color difference degree between the background area and the non-background area. When the grayscale difference exceeds the set grayscale threshold, it is used as the basis for judging whether the non-background area is a ghosting area. When the grayscale difference is greater than or equal to the grayscale threshold, the non-background area is determined to be a ghosting area, thereby providing a basis for the next step of processing the ghosting area and the ghosting boundary.

[0097] In a possible example scenario, Figure 4a This is an image state effect diagram of a method for processing the ghosting boundary of a display screen provided in Embodiment 2 of this application. For display screens with two simple grayscale levels, first, the display screen is identified, the number of pixels in area A is calculated (according to whether the grayscale levels are the same), and the grayscale value Y is recorded; at the same time, the pixel grayscale value around area A is calculated as X; if |X - Y| ≥ n (n is the critical value for generating ghosting due to the grayscale difference between A and B), it is determined that the image display may cause ghosting.

[0098] S308. When it is determined that the non-background area is a ghosting area, a ghosting self-check table is generated according to the set display time parameter and grayscale difference parameter, and the ghosting self-check table is used to characterize whether ghosting appears in the ghosting area in the current display screen.

[0099] S309. Determine whether the target display time t of the ghosting area is greater than the reference display time T corresponding to the grayscale difference in the ghosting self-check table.

[0100] S310. When the target display time t is greater than the reference time T, it is determined that the ghosting area meets the set conditions.

[0101] S311. When the target display time t is less than the reference time T, it is determined that the ghosting area does not meet the set conditions.

[0102] According to Figure 3 the provided illustration, a ghosting self-check table is set to characterize the mapping relationship between the set safe display duration and the grayscale difference. For specific information, refer to Table 1:

[0103] Table 1

[0104]

[0105] According to Table 1, after determining that the residual image area in the display screen is a display prone to residual image, if the set display duration T is less than the actual display time t of the residual image area (such as 1 minute or 10 minutes, and the time t is the time from the appearance of the display in the residual image area to the generation of the residual image), it is used as the judgment basis for performing boundary blurring processing on the residual image area. When the actual display time t of the residual image area is greater than the set safe display time T, it indicates that a residual image phenomenon appears in the display screen and residual image processing is required.

[0106] S312. When the residual image area meets the set conditions, set m moving directions according to the residual image area, and determine the corresponding reference display time T in the self-checking table according to the gray-scale difference value within the residual image area.

[0107] S313. When the residual image area is displayed for T / m time, move the residual image area M pixels in the first target direction among the set m moving directions to reach the first target position, and obtain the first direction transition area.

[0108] S314. When the first direction transition area is displayed for (m - 1)T / m time, restore the first direction transition area to the position of the residual image area.

[0109] S315. Perform moving processing on the residual image area in each direction respectively according to the same moving means, so that the residual image area completes the moving operation after mT time, and obtain m transition areas.

[0110] Here, the value of m is a positive integer greater than 4. The moving direction mentioned here can be understood as the set up, down, left, and right directions, or any arbitrarily set direction. The value of M theoretically has no requirement, and in this application, M is set as a positive integer less than 4 according to the convention.

[0111] Further, according to the preset moving direction, by calculating the grayscale difference between the afterimage area and the Beijing area, and then looking up the self-check table based on the grayscale difference to obtain the corresponding set time T. Suppose the number of set moving directions is m. When displaying T / m time in the non-background area of the display screen, move the afterimage area M pixel distances in the first target direction to obtain a first direction transition area after movement. After maintaining at the position of the first direction transition area for T - T / m (i.e., the display time T of the display screen), move the first direction transition area to a position M pixels away from the first direction to make the first direction transition area return to the original afterimage area, thus completing one movement operation. According to the same operation steps, after T / m time, move the afterimage area in the second direction. After generally moving M pixels, obtain the second direction transition area. After T - T / m, move the second direction transition area back to the original position of the afterimage area to complete the second movement operation, and so on, completing the movement in m directions, with a total elapsed time of mT, and obtaining m transition areas at the same time.

[0112] In a possible example scenario, Figure 4b This is the image state effect diagram of another method for processing the afterimage boundary of the display screen provided in the second embodiment of the present application. Figure 4c This is the image state effect diagram of yet another method for processing the afterimage boundary of the display screen provided in the second embodiment of the present application. According to Figure 4b and Figure 4c the provided diagrams, the moving direction of the afterimage area A is shown. According to Figure 4b it can be seen that the number m of set moving directions is 4. Knowing the value of T according to the self-check table, after T / 4 time, move the entire afterimage area A M pixel positions to the right (for example, 4 pixel positions). After the display screen accumulatively displays for T time, move the moved area M pixels to the left to return to the original position of the afterimage area A, completing one movement operation in one direction. Then, after T / 4 (because there are four directions: up, down, left, and right, the total time the afterimage area A stays in a certain area should be equal to the time in any other area), start moving downwards, and perform the same operation for other directions in turn. After completing the last direction, start moving to the right again and cycle in turn.

[0113] According to Figure 4c the provided diagrams, the moving direction of the afterimage area can be arbitrary, and multiple directions can be selected. The moving rule is to move out first, then return to the original position, then change a direction, and then return to the original position, ensuring that the time the afterimage area stays at the initial position is T / m each time.

[0114] S316. Obtain the total area of the m transition areas.

[0115] S317. Obtain the intersection of the total area and the afterimage area to get the overlapping area.

[0116] S318. Use the part of the total area after removing the overlapping area as the buffer area.

[0117] S319. Fill and blur the pixel grayscale values in the buffer area according to the selected target pixel grayscale value, where the target pixel grayscale value is between the first pixel grayscale value and the second pixel grayscale value.

[0118] Furthermore, move the afterimage area according to the set movement rule. Since the display screen is played in real time, the image observed by the user's vision is changing. The maximum area range that the afterimage area can cover is obtained according to the movement range of the afterimage area as the total area. Then, remove the overlapping part of the m transition areas and the afterimage area, and the remaining part is used as the buffer area. By changing the area observed by the user's vision from the total area to the overlapping area, the area of the afterimage area is visually reduced.

[0119] In a possible example scenario, Figure 6 This is the effect diagram of the buffer area of a method for processing the afterimage boundary of a display screen provided in the second embodiment of the present application. According to Figure 6 the provided view, after moving the afterimage area A in four directions: up, down, left, and right, and moving num pixel positions each time, the area A including the afterimage area A in Figure 6 is formed. 1 Regions 1, 2, 3, and 4 share the display screen in terms of time and space. When the display screen switches, neutralize the pixel grayscale in the buffer area to achieve the purpose of blurring the boundary of the afterimage area, making the boundary phenomenon of the afterimage area A much weaker and achieving the purpose of reducing the afterimage area. (The dotted and solid lines of the frames of the afterimage area A and regions 1, 2, 3, and 4 in the figure do not actually exist, but are only for convenience of illustration.)

[0120] A method for processing the afterimage boundary of a display screen provided in an embodiment of the present application identifies the non-background area in the display screen, judges the non-background area to determine whether it is an afterimage area, and determines the display setting time by looking up the self-check table. When the display duration of the afterimage area exceeds the set time, obtain a new transition area by regularly moving multiple pixel positions in multiple directions, so as to reduce the afterimage area and fade the boundary of the afterimage area.

[0121] Figure 5 This is the flow diagram of a method for processing the afterimage boundary of a display screen provided in the third embodiment of the present application.

[0122] S501. Identify the background area and non-background area in the target display screen.

[0123] Further, when the display screen is lit again and the set display screen information is displayed, the pixel gray values in the corresponding display screen are recognized, and then the background area and the non-background area are obtained, providing reference data for the next step of determining whether there is a residual image area.

[0124] S502. Determine whether the non-background area is a residual image area.

[0125] S503. Count the number of first pixels included in the non-background area, and determine the corresponding first pixel gray values in the non-background area.

[0126] S504. Determine the second pixel gray values at the boundary of the non-background area.

[0127] S505. Determine whether the gray difference between the first gray value and the second gray value is greater than the set gray threshold.

[0128] S506. When the gray difference is greater than or equal to the gray threshold, determine that the non-background area is a residual image area.

[0129] S507. When the gray difference is less than the gray threshold, determine that the non-background area is a non-residual image area.

[0130] According to Figure 3 the provided diagram, by recognizing and counting the pixel gray values and the number of pixels in the non-background area, and calculating the pixel gray values of the background area adjacent to the boundary of the non-background area, the boundary of the residual image area is reached. By calculating the difference between the pixel values of the non-background area and the background area to obtain the gray difference, the magnitude of the gray difference is used to characterize the color difference degree between the background area and the non-background area. The greater the gray difference, the greater the color difference degree between the background area and the non-background area. When the gray difference exceeds the set gray threshold, it is used as the basis for determining whether the non-background area is a residual image area. When the gray difference is greater than or equal to the gray threshold, it is determined that the non-background area is a residual image area, thereby providing a basis for the next step of processing the residual image area and the residual image boundary.

[0131] S508. When it is determined that the non-background area is a residual image area, determine whether the residual image area meets the set conditions.

[0132] Further, after recognizing that there is a residual image area in the display screen, by determining whether the display time of the residual image area reaches the set time, it is used as a basis for determining whether the residual image area will affect the display effect of the next frame of the display screen; when the display duration of the residual image area exceeds the set duration, it is determined that there is a residual image phenomenon when the current display screen switches to the next frame; when the display duration of the residual image area does not exceed the set duration, it is determined that there will be no residual image phenomenon when the current display screen switches to the next frame.

[0133] S509. When the residual image area meets the set conditions, move the residual image area to the target position according to the set movement rules to generate a target transition area.

[0134] Further, when the display screen where the residual image area is located has a static duration exceeding the set duration, which visually causes a residual image phenomenon for the user, the residual image area is moved sequentially in multiple set directions, and each direction corresponds to a target position. After moving the residual image area to the target position, the area where the residual image area is located is a transition area, and multiple transition areas are obtained after moving in multiple directions.

[0135] S510. Determine the target overlapping area between the residual image area and the first-direction transition area.

[0136] S511. Use the area in the residual image area that does not include the target overlapping area as the first remaining area.

[0137] S512. Perform filling processing on the first remaining area according to the set target filling strategy.

[0138] In a possible example scenario, Figure 4d This is the image state effect diagram of another method for processing the residual image boundary of the display screen provided in Embodiment 3 of this application. According to Figure 4d the provided diagram, when comparing the transition area in one direction obtained with the residual image area A, the area not covered by the transition area is used as the remaining area in the first direction. For filling this area, a pixel value between the pixel values in the residual image area and the pixel values in the background area can be selected as the filling pixel to achieve filling of the remaining area and the purpose of fading the residual image area.

[0139] S513. Determine whether the first remaining area is the background area.

[0140] S514. When the first remaining area is the background area, perform filling processing on the first remaining area according to the second pixel gray value in the background area.

[0141] S515. When the first remaining area is not the background area, process the first remaining area according to the occluding screen.

[0142] Further, regarding how to fill the remaining area obtained after moving in one direction, it is divided into two cases for processing. In the first case, when the remaining area belongs to the background area, the pixels in the remaining area are directly filled with the background area pixels. In the second case, when there is no afterimage area A, the background area B is a complete display screen. After the afterimage area A moves, by displaying the pixel information of the corresponding background area B for the unobscured part of the background area B, the picture that the remaining area should originally display when the background area B is not blocked by the afterimage area A is shown, thereby realizing the pixel filling in the remaining area.

[0143] S516. Blur the target transition area to fade the afterimage boundary in the afterimage area.

[0144] Further, compare the target transition area after the movement process with the afterimage area before the movement, and modify the pixel gray values in the non-overlapping areas to achieve the purpose of fading the pixel gray values in the afterimage area. Further, visually achieve the purpose of reducing the area of the afterimage area, and at the same time, achieve the purpose of blurring the boundary of the afterimage area.

[0145] S517. When it is determined that there are multiple afterimage areas with different pixel gray values in the non-background area, calculate the minimum circumscribed rectangle area of all the afterimage areas.

[0146] In a possible example scenario, Figure 7 This is the image state effect diagram of a method for processing the afterimage boundary of a display screen provided in Embodiment 4 of this application. Figure 8 This is the image state effect diagram of a method for processing the afterimage boundary of a display screen provided in Embodiment 4 of this application. According to Figure 7 and Figure 8 the provided diagrams, the relative positions of the afterimage area A and the afterimage area C cannot change, but it does not affect the background area B. Then, reset the moving unit to find a minimum unit that contains the afterimage area A and the afterimage area C, that is, area D. When performing the afterimage area movement operation, since the area D itself belongs to the background area B, the display screen is filled according to the actual display of the background area B.

[0147] S518. Perform the step of moving the afterimage area to the target position according to the set moving rule for the minimum circumscribed rectangle area to generate the target transition area.

[0148] According to the obtained minimum circumscribed rectangle, such as Figure 8 the area D in, move the area D regularly in the set direction to obtain a new transition area. After the same moving operation, the boundary of the afterimage area in the area D is faded.

[0149] A method for processing the boundary of display screen afterimage provided by an embodiment of the present application identifies the afterimage area in the display screen, moves the afterimage area to obtain a target transition area, and fills the remaining area, so as to reduce the moved afterimage area and achieve the problem of fading the boundary of the afterimage area.

[0150] Figure 9 It is a schematic structural diagram of a device for processing the boundary of display screen afterimage provided in Embodiment 5 of the present application. According to Figure 9 The provided diagram, the structure of the device for processing the boundary of display screen afterimage specifically includes:

[0151] An identification module 91 for identifying the background area and non-background area in the target display screen;

[0152] A judgment module 92 for judging whether the afterimage area meets the set conditions when it is determined that the non-background area is the afterimage area;

[0153] A moving processing module 93 for moving the afterimage area to the target position according to the set moving rule to generate a target transition area when the afterimage area meets the set conditions;

[0154] A fading processing module 94 for performing blurring processing on the target transition area so as to fade the afterimage boundary in the afterimage area.

[0155] The device for processing the boundary of display screen afterimage provided in this embodiment may be the device for processing the boundary of display screen afterimage shown in Figure 9 and can execute all steps of the method for processing the boundary of display screen afterimage shown in Figures 2 - 8 so as to achieve the technical effect of the method for processing the boundary of display screen afterimage shown in Figures 2 - 8 For specific details, please refer to Figures 2 - 8 the relevant description. For the sake of brevity, it will not be elaborated here.

[0156] Figure 10 A liquid crystal display panel 1000 provided in Embodiment 6 of the present application includes an array substrate and a color filter substrate arranged in a pair, a liquid crystal layer is arranged between the array substrate and the color filter substrate, and the array substrate has a device 100 for processing the boundary of display screen afterimage as provided in Figures 2 - 8 the above.

[0157] The liquid crystal display panel 1000 provided in this embodiment may be the liquid crystal display panel 1000 shown in Figure 10 and can execute all steps of the device for processing the boundary of display screen afterimage shown in Figure 9 so as to achieve the technical effect of the device for processing the boundary of display screen afterimage shown in Figure 9 For specific details, please refer to Figure 9 the relevant description. For the sake of brevity, it will not be elaborated here.

[0158] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above description is only the specific embodiments of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A method for processing the boundary of display screen afterimage, characterized in that, Including: Identifying a background area and a non-background area in a target display screen; When determining that the non-background area is a ghosting area, determining whether the ghosting area meets a set condition; When the ghosting area meets the set condition, moving the ghosting area to a target position according to a set movement rule to generate a target transition area; Performing blurring processing on the target transition area to fade the ghosting boundary in the ghosting area; The determining whether the ghosting area meets the set condition includes: Generating a ghosting self-check table according to set display time parameters and gray-scale difference parameters, where the ghosting self-check table is used to represent the mapping relationship between a set reference display time and the gray-scale difference, and the gray-scale difference is the difference between a first pixel gray-scale value corresponding in the non-background area and a second pixel gray-scale value at the boundary of the non-background area; Determining whether a target display time t of the ghosting area is greater than a reference display time T corresponding to the gray-scale difference in the ghosting self-check table; When the target display time t is greater than the reference display time T, determining that the ghosting area meets the set condition; When the target display time t is less than the reference display time T, determining that the ghosting area does not meet the set condition; After performing the identifying of the background area and the non-background area in the target display screen, the method further includes: Determining whether the non-background area is a ghosting area; Counting the number of first pixels included in the non-background area and determining the first pixel gray-scale value corresponding in the non-background area; Determining the second pixel gray-scale value at the boundary of the non-background area; Determining whether the gray-scale difference between the first pixel gray-scale value and the second pixel gray-scale value is greater than a set gray-scale threshold; When the gray-scale difference is greater than or equal to the gray-scale threshold, determining that the non-background area is a ghosting area; When the gray-scale difference is less than the gray-scale threshold, determining that the non-background area is a non-ghosting area.

2. The method according to claim 1, characterized in that, The moving the ghosting area to the target position according to the set movement rule to generate the target transition area includes: Setting m moving directions according to the ghosting area and determining the corresponding reference display time T in the self-check table according to the gray-scale difference in the ghosting area; When the ghosting area is displayed for T / m time, moving the ghosting area M pixels in a first target direction among the set m moving directions to reach a first target position to obtain a first-direction transition area; When the first-direction transition area is displayed for (m - 1)T / m time, restoring the first-direction transition area to the position of the ghosting area; Performing moving processing on the ghosting area in each direction respectively according to the same moving means so that the ghosting area completes the moving operation after mT time to obtain m transition areas.

3. The method according to claim 2, wherein The method further includes: Determining a target overlapping area between the ghosting area and the first-direction transition area; Taking the area in the ghosting area that does not include the target overlapping area as a first remaining area; Performing filling processing on the first remaining area according to a set target filling strategy.

4. The method according to claim 3, wherein Performing filling processing on the first remaining area according to a set target filling strategy includes: Determining whether the first remaining area is a background area; When the first remaining area is a background area, performing filling processing on the first remaining area according to the second pixel gray value within the background area; When the first remaining area is not a background area, processing the first remaining area according to the occluded screen.

5. The method according to claim 2, characterized in that Performing blurring processing on the target transition area includes: Obtaining the total area of m transition areas; Obtaining the intersection of the total area and the afterimage area to obtain an overlapping area; Taking the part of the total area excluding the overlapping area as a buffer area; Filling and blurring the pixel gray values within the buffer area according to a selected target pixel gray value, where the target pixel gray value is between the first pixel gray value and the second pixel gray value.

6. The method according to claim 1, wherein The method further includes: Calculating the minimum bounding rectangle area within the area where all the afterimage areas are located when it is determined that the non-background area contains multiple afterimage areas with different pixel gray values; Performing the step of moving the afterimage area to a target position according to the set moving rule on the minimum bounding rectangle area to generate a target transition area.

7. A processing device for the boundary of display screen afterimage, which is applied to the method for processing the boundary of display screen afterimage according to any one of claims 1 to 6, and is characterized in that, Includes: An identification module for identifying the background area and non-background area in the target display screen; A judgment module for judging whether the afterimage area meets the set conditions when it is determined that the non-background area is an afterimage area; A movement processing module for moving the afterimage area to a target position according to the set moving rule to generate a target transition area when the afterimage area meets the set conditions; A fading processing module for performing blurring processing on the target transition area to fade the afterimage boundary in the afterimage area; The judgment module is further used for: Generating an afterimage self-check table according to the set display time parameter and gray difference parameter, where the afterimage self-check table is used to represent the mapping relationship between the set reference display time and the gray difference, and the gray difference is the difference between the first pixel gray value corresponding within the non-background area and the second pixel gray value at the boundary of the non-background area; Judging whether the target display time t of the afterimage area is greater than the reference display time T corresponding to the gray difference in the afterimage self-check table; When the target display time t is greater than the reference display time T, determining that the afterimage area meets the set conditions; When the target display time t is less than the reference display time T, determining that the afterimage area does not meet the set conditions; The device is further used for: Judging whether the non-background area is an afterimage area; Counting the number of first pixels contained in the non-background area and determining the first pixel gray value corresponding within the non-background area; Determining the second pixel gray value at the boundary of the non-background area; Judging whether the gray difference between the first pixel gray value and the second pixel gray value is greater than the set gray scale threshold; When the gray difference is greater than or equal to the gray scale threshold, determining that the non-background area is an afterimage area; When the grayscale difference value is less than the grayscale threshold value, it is determined that the non-background area is a non-afterimage area.

8. A liquid crystal display panel, comprising an array substrate and a color filter substrate which are arranged in a facing manner, and a liquid crystal layer is disposed between the array substrate and the color filter substrate, wherein, Including: The processing device with the display screen afterimage boundary as described in claim 7 is provided on the array substrate.

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