A black insertion method and display panel

Abstract

This application provides a black insertion method and a display panel. The method includes: determining a black insertion ratio based on the refresh rate of the display panel; determining a black insertion area based on the displayed content; displaying the image frame by frame based on a first grayscale table corresponding to a first gamma voltage, and performing local black insertion on the displayed image based on the black insertion ratio and the black insertion area to form black-inserted frames and non-black-inserted frames; and adjusting the brightness of at least the non-black-inserted frames to adjust the brightness uniformity of the black-inserted and non-black-inserted areas. This application reduces dynamic ghosting of the displayed image by determining the black insertion ratio based on the refresh rate of the display panel; determines the black insertion area based on the displayed content so that black insertion is only performed on dynamic areas, thereby saving costs and energy consumption; and further, adjusts the brightness of the non-black-inserted frames to make the brightness of the black-inserted and non-black-inserted areas consistent.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a black dot insertion method and a display panel. Background Technology

[0002] Liquid crystal displays (LCDs) inherently suffer from motion blur in dynamic images due to the slow response time of liquid crystal molecules. Traditional solutions primarily aim to improve the response time of the liquid crystal material, but this approach only addresses the symptoms and cannot completely eliminate the visual persistence effect. Black frame insertion technology was developed to address this issue by inserting a black frame between two images, thus cutting off the visual persistence effect and significantly reducing motion blur.

[0003] Most existing black frame insertion technologies use a fixed black frame insertion ratio, which cannot be adaptively adjusted according to the characteristics of the displayed content. Furthermore, inserting black frames will significantly reduce the overall brightness, resulting in uneven brightness of the displayed image. Summary of the Invention

[0004] This application provides a black dot insertion method and a display panel to solve the problem of uneven brightness in the display screen caused by existing black dot insertion technology.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted in this application is: to provide a black dot insertion method, the method comprising:

[0006] The black insertion ratio is determined based on the refresh rate of the display panel;

[0007] Determine the black insertion area based on the displayed content;

[0008] Based on the first grayscale table corresponding to the first gamma voltage, the image is displayed frame by frame, and the image is partially interpolated based on the black insertion ratio and black insertion area, thereby forming black-inserted frames and non-black-inserted frames.

[0009] Adjust the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas.

[0010] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas includes:

[0011] The region consisting of sub-pixels whose actual brightness ratio to the maximum brightness ratio of the first grayscale table is lower than a threshold within the black insertion region of a non-black insertion frame is defined as a voltage-maintaining region; the region consisting of sub-pixels whose actual brightness ratio to the maximum brightness ratio of the first grayscale table is higher than a threshold within the black insertion region of a non-black insertion frame is defined as a voltage-variable region.

[0012] Increase the grayscale value of the voltage-holding region to improve the brightness of the voltage-holding region; and / or increase the first gamma voltage of the voltage-variable region to the second gamma voltage to improve the brightness of the voltage-variable region.

[0013] In one embodiment, increasing the grayscale value of the voltage-holding region to improve the brightness of the voltage-holding region includes:

[0014] Based on the black insertion ratio, the target brightness of the voltage holding region is calculated by La=Lr / (1-1 / N); where La is the target brightness of the voltage holding region, Lr is the actual brightness of the voltage holding region before black insertion, and 1 / N is the black insertion ratio, which means that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2.

[0015] Based on the linear relationship of the gamma curve corresponding to the first gamma voltage, find the grayscale value corresponding to the target brightness of the voltage holding area, and use it as the target grayscale value.

[0016] Maintain the first gamma voltage and increase the grayscale value of the voltage holding area to the target grayscale value.

[0017] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas includes:

[0018] The first gamma voltage of the black insertion area in the non-black insertion frame is increased to the second gamma voltage, thereby increasing the brightness of the voltage-variable area.

[0019] In one embodiment, the second gamma voltage corresponds to a second grayscale table, and the brightness corresponding to the same grayscale value in the second grayscale table as in the first grayscale table satisfies the following relationship:

[0020] L2 = L1 / (1-1 / N), where L2 is the brightness corresponding to the same gray level value in the second gray level table, L1 is the brightness corresponding to the same gray level value in the first gray level table, and 1 / N is the black insertion ratio, which means that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2.

[0021] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas includes:

[0022] Increase the backlight brightness of the black insertion area in non-black insertion frames;

[0023] The backlight module of the display panel includes multiple independently controlled sub-backlight areas; partial black insertion of the display screen based on the black insertion ratio and black insertion area includes:

[0024] Increase the backlight brightness of the black insertion area in non-black insertion frames, including:

[0025] Increase the backlight brightness within the black-insertion backlight area, and calculate the minimum number of sub-backlight areas that cover the black-insertion area, which will be used as the black-insertion backlight area.

[0026] Turn off the backlight in the black backlight area and insert the black backlight;

[0027] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas includes:

[0028] Lower the grayscale value of the non-interpolated area in the non-interpolated frame;

[0029] Increase the overall backlight brightness of non-interpolated black frames.

[0030] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas further includes:

[0031] Lower the grayscale value of the non-black interpolated area in the black interpolated frame.

[0032] In one embodiment, the method further includes:

[0033] Detect ambient light;

[0034] In response to the ambient light brightness being within a brightness threshold range, the following steps are performed: at least the brightness of the non-inserted frame is adjusted, thereby adjusting the brightness uniformity of the inserted and non-inserted areas;

[0035] If the ambient light brightness is not within a certain brightness threshold range, the following steps are stopped: at least the brightness of the non-inserted frame is adjusted, thereby adjusting the brightness uniformity of the inserted and non-inserted areas.

[0036] To solve the above-mentioned technical problems, the second technical solution adopted in this application is: to provide a display panel, including a panel body and a black dot insertion control circuit, wherein the panel body and the black dot insertion control circuit are electrically connected, and the black dot insertion control circuit is used to execute the black dot insertion method in any of the above embodiments.

[0037] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a black insertion method and a display panel. The method includes: determining a black insertion ratio based on the refresh rate of the display panel; determining a black insertion area based on the displayed content; displaying the image frame by frame based on a first grayscale table corresponding to a first gamma voltage, and performing local black insertion on the displayed image based on the black insertion ratio and the black insertion area, thereby forming black-inserted frames and non-black-inserted frames; and adjusting the brightness of at least the non-black-inserted frames to adjust the brightness uniformity of the black-inserted and non-black-inserted areas. This application reduces dynamic ghosting of the displayed image by determining the black insertion ratio based on the refresh rate of the display panel, thereby saving costs and energy consumption; determining the black insertion area based on the displayed content ensures that black insertion is only performed on dynamic areas; and further, by adjusting the brightness of the non-black-inserted frames, the brightness of the black-inserted and non-black-inserted areas is made consistent. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating the first embodiment of the black dot insertion method provided in this application;

[0040] Figure 2 A schematic diagram of the structure of an embodiment of the black insertion method provided in this application;

[0041] Figure 3 For this application Figure 1 A schematic diagram of the framework of one embodiment of step S30;

[0042] Figure 4 For this application Figure 1 A schematic diagram of the framework of the first embodiment of step S40;

[0043] Figure 5 For this application Figure 1 A schematic diagram of the framework of the second embodiment of step S40;

[0044] Figure 6 A schematic diagram of a curve representing an embodiment of the black insertion method provided in this application;

[0045] Figure 7 A grayscale table and curve diagram of an embodiment of the black insertion method provided in this application;

[0046] Figure 8 A flowchart illustrating a second embodiment of the black dot insertion method provided in this application;

[0047] Figure 9 A schematic diagram of the structure of an embodiment of the display panel provided in this application.

[0048] Reference numerals: SOC system 10, data module 11, logic module 12, control module 20, dynamic area 301, black insertion area 302, display panel 1000, panel body 1001, black insertion control circuit 1002. Detailed Implementation

[0049] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0050] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0051] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "more" in this article means two or more objects.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0053] Before providing a further detailed description of the embodiments of this application, the nouns and terms involved in the embodiments of this application will be explained, and the nouns and terms involved in the embodiments of this application shall be interpreted as follows.

[0054] like Figure 1 As shown, Figure 1 This is a flowchart illustrating a first embodiment of the black insertion method provided in this application. This application provides a black insertion method, which includes the following steps:

[0055] Step S10: Determine the black insertion ratio based on the refresh rate of the display panel;

[0056] Step S20: Determine the black insertion area based on the displayed content;

[0057] Step S30: Based on the first grayscale table corresponding to the first gamma voltage, display the image frame by frame, and perform local black insertion on the displayed image based on the black insertion ratio and black insertion area to form black-inserted frames and non-black-inserted frames.

[0058] Step S40: Adjust the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas.

[0059] It should be noted that the refresh rate of the display panel in step S10 refers to the number of times the display panel refreshes its image per second, reflecting the speed at which the display panel updates the image. As can be understood, the image on the display panel is not displayed continuously, but rather formed by rapidly refreshing a series of static images. Due to the persistence of vision, the human eye perceives the rapidly switching static frames as smooth dynamic images. The higher the refresh rate, the more frames are refreshed per second, resulting in smoother dynamic transitions and a weaker visual perception of ghosting or stuttering. The black frame insertion ratio refers to the ratio of inserted black frames to the normally displayed image during the display process.

[0060] In one embodiment, the black insertion ratio is determined based on the refresh rate of the display panel. Specifically, when the display panel has a low refresh rate, such as 60Hz, the corresponding black insertion ratio can be set to insert black once every three frames or once every four frames. This is because for a low refresh rate display, each frame is very long, and if the black insertion frequency is too high, it may cause flickering in the human eye and significantly reduce brightness. Therefore, black insertion can be performed every few frames. When the display panel has a high refresh rate, such as 120Hz or higher, the corresponding black insertion ratio can be set to insert black once every two frames. This is because for a high refresh rate display, each frame is very short, and the number of frames per unit time is large. Keeping the time data unchanged for several frames will not cause liquid crystal polarization.

[0061] Combination Figure 2 In one embodiment, the SOC (System on Chip) system 10 includes a data module 11 and a logic module 12. The data module 11 stores display data, including data from the current frame and subsequent frames. The logic module 12 analyzes the display content of the data module 11. The control module 20 controls the display panel.

[0062] In step S20, the black insertion area is determined based on the displayed content. Specifically, the logic module 12 reads the display content of multiple frames stored in the data module 11, determines the dynamic and static areas in the multi-frame display screen, and selects the black insertion area accordingly. Furthermore, it determines the black insertion ratio based on the data refresh rate and the minimum number of changing frames, and then provides the modified data to the control module 20. The control module 20 can be, for example, a Tcon circuit, which controls the display panel.

[0063] It should be noted that in step S20, the displayed content includes dynamic content and static content. Dynamic content refers to content that moves or rotates between adjacent frames, such as fast-moving game footage or running animals. Understandably, the pixel values ​​in the dynamic content of adjacent display frames will change. Static content refers to content that does not change between adjacent frames. For example, if an animal running in a forest is displayed, it could be a rabbit or a deer; the static content in this scene would be the trees in the forest. Understandably, the pixel values ​​in static content do not change over time.

[0064] In this embodiment, the black insertion area is defined as the area that covers the dynamic content and is smaller than the entire display screen area. This ensures that black insertion is performed on the dynamic area while avoiding black insertion on the static area. For example, when the dynamic area is an ellipse, the black insertion area can be a rectangle, square, triangle, or other shapes that cover the area of ​​the ellipse and are smaller than the display area.

[0065] In one embodiment, the control module 20 receives the black insertion area and black insertion ratio uploaded by the logic module 12 and performs partial black insertion on the displayed screen. Specifically, it can choose either partial screen black insertion or partial backlight black insertion to insert black into the dynamic area. For example, by selecting partial screen black insertion, a black image can be inserted into a local area corresponding to the dynamic area; by selecting partial backlight black insertion, the backlight corresponding to the dynamic area can be selectively turned off to insert black based on the range of the obtained dynamic area.

[0066] After determining the black insertion ratio and black insertion area, step S30 is implemented: based on the first grayscale table corresponding to the first gamma voltage, the image is displayed frame by frame, and local black insertion is performed on the displayed image to form black-inserted frames and non-black-inserted frames. It should be noted that the gamma voltage is a key parameter for controlling the display brightness of the display panel, and the grayscale table defines the correspondence between grayscale values ​​and brightness percentages.

[0067] Combination Figure 3 In one embodiment, when the displayed screen is a game screen, a relatively high display quality is required for dynamic content. When inserting black frames into the game screen, the insertion ratio is set to 1 / 2. If the traditional screen insertion method is used, i.e., one frame of normal display and one frame of black screen, half of the effective data will be lost at a fixed refresh rate. It is understandable that for a product with a refresh rate of 320Hz, if the traditional screen insertion mode is used, the actual display frequency will be 160Hz, which is equivalent to losing half the refresh rate, and the brightness will also decrease. Therefore, since the data of multiple frames is the same, insertion does not improve the image quality of static areas. In this embodiment, the partial insertion method is more suitable for the dynamic areas of dynamic screens, inserting black frames only for the dynamic areas of the data, while keeping the data unchanged in static areas.

[0068] exist Figure 3 In this embodiment, the black frame insertion ratio is two frames with one frame inserted. The first frame displays the screen content normally, and the dynamic area 301 contains the corresponding dynamic content. The second frame inserts black frames only into the dynamic area 301 of the first frame; the black-framed area in the figure is the black frame insertion area 302, avoiding unnecessary black frame processing on areas other than the dynamic area 301. The third frame also displays the screen content normally, and the dynamic area 301 contains the corresponding dynamic content. The fourth frame inserts black frames into the dynamic area of ​​the third frame, realizing the dynamic update of the black frame insertion area 302. For example, the displayed content could be a game screen; the first frame displays the game screen normally, the second frame inserts black frames into the area where the character is moving, the third frame also displays the game screen normally, and the fourth frame inserts black frames into the background area that has changed compared to the first frame.

[0069] After performing the above steps, this embodiment can reduce the ghosting of the displayed image. However, due to the partial black insertion operation on the displayed image, the brightness of the black insertion area will be reduced, resulting in uneven display brightness between the black insertion area and the non-black insertion area.

[0070] Based on this, step S40 is implemented: at least the brightness of the non-inserted frames is adjusted, thereby adjusting the brightness uniformity of the inserted and non-inserted areas.

[0071] It should be noted that, in the embodiments of this application, the black-inserted area is the dynamic area in the displayed content or the area covering the dynamic area, and the non-black-inserted area is the static area in the displayed content or the area excluding the dynamic area; when a non-black-inserted frame is displayed, the black-inserted area of ​​the non-black-inserted frame displays the screen normally, and when a black-inserted frame is displayed, the black-inserted area of ​​the black-inserted frame only displays black.

[0072] In one embodiment, the display quality of the display panel can be improved by adjusting the brightness of the non-inserted frames, for example, by increasing the brightness of the inserted area in the non-inserted frames, so that the average brightness of the inserted area is consistent with the average brightness of the non-inserted area. If the insertion ratio is one frame inserted every N frames, then the average brightness refers to the average brightness of the image over a continuous (N+1) frames.

[0073] In another embodiment, the brightness of the non-inserted area of ​​the non-inserted frame can also be adjusted. For example, the grayscale value of the non-inserted area can be lowered so that the average brightness of the non-inserted area is consistent with the average brightness of the inserted area. Then, the brightness of the displayed image can be uniformly improved by adjusting the backlight brightness, thereby improving the display quality of the display panel.

[0074] In this embodiment, after determining the black insertion ratio and the black insertion area, local black insertion is performed on the displayed screen, and the brightness of the non-black insertion frames is further adjusted to make the brightness of the black insertion area and the non-black insertion area consistent.

[0075] In one embodiment, after partially inserting black bars into the displayed image, to eliminate the uneven brightness between the inserted and uninserted areas caused by the insertion, the concept of a Gamma curve needs to be introduced. (See reference...) Figure 4 , Figure 4 This plots the curves representing the relationship between grayscale and luminance values, with the horizontal axis representing the number of grayscale levels and the vertical axis representing the percentage of luminance. The solid line represents the relationship between grayscale and luminance values ​​when Gamma = 1.0, the dashed line represents the relationship when Gamma = 2.0, and the dotted dashed line represents the relationship when Gamma = 3.0. (Reference...) Figure 5 When Gamma=2.2, the brightness that the human eye can perceive changes most closely with the grayscale level.

[0076] Therefore, the following embodiments of this application will take the Gamma curve at Gamma=2.2 as an example to illustrate the specific implementation of this application in eliminating the uneven brightness of the black-inserted area and the non-black-inserted area after black insertion of the display screen.

[0077] In one embodiment, the brightness after black insertion is expressed as a percentage. For example, the actual brightness of a non-black-inserted frame is defined as 100%, meaning the brightness of each pixel is defined as 100%. The actual brightness of the non-black-inserted area of ​​a black-inserted frame is 100%, while the actual brightness of the black-inserted area is zero. The black insertion ratio is determined based on the refresh rate of the display panel. For example, the black insertion ratio can be 1 / 2, meaning one frame displays the actual brightness and the other displays a black screen. The display time for the actual brightness and the black screen is equal. After the two frames are superimposed, the average brightness of the black-inserted area is approximately 50% of the actual brightness, while the average brightness of the non-black-inserted area remains essentially unchanged. Therefore, to solve the problem of the average brightness difference between the black-inserted and non-black-inserted areas, it is necessary to increase the average brightness of the black-inserted area, i.e., increase the brightness of the black-inserted area in the non-black-inserted frame. At this point, ACC (Advanced Color Correction) needs to be introduced. The ACC algorithm expands the dimensions and levels of the grayscale table from 8 bits corresponding to 0~255 grayscale levels to 12 bits corresponding to 0~4095 grayscale levels, which is used to adjust the color reproduction more finely.

[0078] In one embodiment, adjusting the brightness of at least the non-inserted frame to adjust the brightness uniformity of the inserted and non-inserted regions includes: defining a region composed of sub-pixels whose actual brightness in the inserted region of the non-inserted frame is less than a threshold compared to the maximum brightness of the first grayscale table as a voltage-holding region; defining a region composed of sub-pixels whose actual brightness in the inserted region of the non-inserted frame is greater than a threshold compared to the maximum brightness of the first grayscale table as a voltage-variable region; increasing the grayscale value of the voltage-holding region to improve the brightness of the voltage-holding region; and / or increasing the first gamma voltage of the voltage-variable region to a second gamma voltage to improve the brightness of the voltage-variable region.

[0079] It should be noted that subpixels whose actual brightness is less than the maximum brightness ratio of the first grayscale table (below a threshold) constitute a voltage-holding region. Located in the low-brightness position of the black-insertion region in non-black-insertion frames, these subpixels have a lower grayscale. Therefore, brightness in the voltage-holding region can be increased by raising the grayscale value to meet the brightness enhancement requirements of the black-insertion region. Subpixels whose actual brightness is greater than the maximum brightness ratio of the first grayscale table (above a threshold) constitute a voltage-variable region. Located in the high-brightness position of the black-insertion region, these subpixels have a higher grayscale. Brightness enhancement cannot be achieved by simply increasing the grayscale value in this region. Therefore, brightness in the voltage-variable region is increased by raising the gamma voltage, thus achieving dynamic brightness compensation. The voltage-holding and voltage-variable regions are adjusted synchronously in the black-insertion frame to ensure that brightness compensation and black-insertion operations work in tandem, avoiding visual persistence differences.

[0080] refer to Figure 6 In this embodiment, for the voltage-maintaining region, a first grayscale table is obtained using the curve at gamma = 2.2. Grayscale 255 of the first grayscale table corresponds to the maximum brightness Lmax. The entire region is divided into two areas: a voltage-maintaining region and a voltage-maintaining region. The voltage-maintaining region can maintain the existing gamma voltage. The brightness of the voltage-maintaining region is half of the maximum brightness Lmax, i.e., 50% * Lmax, and the corresponding grayscale is 180. The reason for this setting is that grayscale 0 to 180 corresponds to 0 to 50% of the maximum brightness Lmax. Based on this, by raising the grayscale of the display in the voltage-maintaining region to 180 to 255, the brightness of each sub-pixel can be increased by 2 times. Therefore, it is only necessary to raise the grayscale value of the voltage-maintaining region to compensate for the average brightness difference between the region and the non-black-insertion region caused by black insertion in this region.

[0081] However, in the voltage-variable area, because the grayscale levels 180-255 are already quite high, even if the entire display grayscale is adjusted to 255, it cannot compensate for the brightness loss in the voltage-variable area due to black pixel insertion. For example, with proportional black pixel insertion, it is impossible to double the brightness of the sub-pixels in the 180-255 grayscale levels by simply increasing the grayscale. Therefore, special processing is required for the voltage-variable area, namely, changing the gamma voltage value to increase the brightness value corresponding to this portion of the grayscale.

[0082] Based on this, a first gamma voltage and a second gamma voltage are set for the voltage-holding area and the voltage-variable area. For the voltage-holding area, the first gamma voltage is used for charging and display, and the grayscale value corresponding to the voltage-holding area is increased based on the first grayscale table corresponding to the first gamma voltage, thereby improving the brightness of the voltage-holding area. For the voltage-variable area, the second gamma voltage is used for charging and display, and the second gamma voltage corresponds to the second grayscale table, thereby improving the brightness of the grayscale value corresponding to the voltage-variable area. Through this method, the grayscale brightness of the entire display area after black insertion can be improved to the brightness value of the non-black insertion area.

[0083] In one embodiment, when the entire black insertion area is a voltage-holding area, the brightness of the voltage-holding area can be increased by maintaining the first gamma voltage and raising the grayscale value of the voltage-holding area. This allows the grayscale brightness of the entire display area after black insertion to be raised to the average brightness value of the non-black insertion area.

[0084] It should be noted that, in order to make the colors seen by users closer to the real colors, after black insertion is applied to the display screen, in order to eliminate the uneven brightness between the inserted and non-inserted areas caused by black insertion, when the grayscale values ​​of the voltage-held area are compensated using the gamma curve, each sub-pixel, namely the red sub-pixel, green sub-pixel and blue sub-pixel, needs to correspond to a different compensation value.

[0085] like Figure 7 As shown, Figure 7 The left side shows the correspondence between different grayscale values ​​and the brightness values ​​of each sub-pixel, namely the red sub-pixel, green sub-pixel, and blue sub-pixel. Figure 7 The right side shows the relationship curves between grayscale values ​​of 0-255 and 0-4095, corresponding to the same brightness value for each sub-pixel (red, green, and blue). It can be understood that if the gamma value changes from 5 to 14, the corresponding brightness value change for each sub-pixel will be... Figure 7 In the table on the left: the value corresponding to the red sub-pixel increased from 94 to 378, the value corresponding to the green sub-pixel increased from 88 to 350, and the value corresponding to the blue sub-pixel increased from 82 to 355.

[0086] In another embodiment, when the entire black insertion area is a voltage holding area, the brightness of the voltage holding area can be increased by raising the first gamma voltage to the second gamma voltage corresponding to the second grayscale table, so that the grayscale brightness of the entire display area after black insertion can be increased to the average brightness value of the non-black insertion area.

[0087] It should be noted that when the entire black insertion area is a voltage-holding area, the preferred method is to maintain the first gamma voltage and then increase the grayscale value of the voltage-holding area to improve its brightness. This is because increasing the first gamma voltage to the second gamma voltage corresponding to the second grayscale table requires more computation and is more difficult to implement.

[0088] In one embodiment, when the entire black insertion area is a voltage-variable area, the first gamma voltage of the voltage-variable area is increased to the second gamma voltage corresponding to the second grayscale table, thereby increasing the brightness of the voltage-variable area. This allows the grayscale brightness of the entire display area after black insertion to be increased to the average brightness value of the non-black insertion area.

[0089] In one embodiment, when part of the black insertion area is a voltage-holding area and part is a voltage-variable area, for the voltage-holding area: the first gamma voltage is maintained, and the grayscale value of the voltage-holding area is increased, thereby improving the brightness of the voltage-holding area; for the voltage-variable area: the first gamma voltage of the voltage-variable area is increased to the second gamma voltage corresponding to the second grayscale table, thereby improving the brightness of the voltage-variable area. Based on this, the grayscale brightness of the entire display area after black insertion can be improved to the average brightness value of the non-black insertion area.

[0090] This embodiment achieves brightness compensation in low-brightness areas by defining a voltage-maintaining region and increasing its grayscale value, thus bringing the brightness of this region up to match that of the non-black-insertion region. Conversely, by defining a voltage-variable region and increasing its gamma voltage, the brightness of this region is also increased to match that of the non-black-insertion region, achieving brightness compensation in high-brightness areas. This combination of grayscale value increase and gamma voltage adjustment minimizes the brightness difference between the black-insertion and non-black-insertion regions, thereby improving the brightness uniformity of the displayed image.

[0091] In another embodiment, the time of the black-inserted frame and the non-black-inserted frame are different, that is, the black-insertion time ratio is not 1:1. Therefore, it is necessary to calculate the target brightness corresponding to the voltage holding region and the voltage variable region based on the black-insertion ratio and the black-insertion time ratio. Then, based on the relationship between the target brightness and the gamma curve, the grayscale value corresponding to the voltage holding region is found in reverse, or the second gamma voltage corresponding to the voltage variable region is calculated.

[0092] In one embodiment, the grayscale value of the voltage-holding region is increased to improve the brightness of the voltage-holding region, including: calculating the target brightness of the voltage-holding region based on the black insertion ratio using La=Lr / (1-1 / N); where La is the target brightness of the voltage-holding region, Lr is the actual brightness of the voltage-holding region before black insertion, 1 / N is the black insertion ratio, indicating that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2; finding the grayscale value corresponding to the target brightness of the voltage-holding region according to the linear relationship of the gamma curve corresponding to the first gamma voltage, and using it as the target grayscale value; and maintaining the first gamma voltage, increasing the grayscale value of the voltage-holding region to the target grayscale value.

[0093] It should be noted that the black insertion ratio 1 / N means inserting one black frame every N frames, where N is an integer greater than or equal to 2. In other words, when N=2, it means inserting one black frame every two frames (one frame is displayed normally, and one frame is inserted black); when N=3, it means inserting one black frame every three frames (one black frame is displayed every two frames displayed normally).

[0094] In this embodiment, when calculating the target brightness La of the voltage-holding region, the black insertion ratio needs to be considered to ensure that the brightness after compensation is restored to the level before black insertion. For example, if the actual brightness Lr of the voltage-holding region before black insertion is 100%, when N=2, that is, the black insertion ratio is 1 / 2, the target brightness La of the voltage-holding region can be calculated according to La=Lr / (1-1 / N)=100% / (1-1 / 2)=200%, that is, the brightness of the voltage-holding region needs to be doubled; when N=3, that is, the black insertion ratio is 1 / 3, the target brightness La of the voltage-holding region can be calculated according to La=Lr / (1-1 / N)=100% / (1-1 / 3)=150%, that is, the brightness of the voltage-holding region needs to be increased to 1.5 times. According to the linear relationship of the gamma curve corresponding to the first gamma voltage, the target grayscale value corresponding to the target brightness La of the voltage-holding region is found. This linear relationship makes the grayscale value and the brightness change linearly correspond. Keeping the first gamma voltage constant, the grayscale value of the voltage holding area is increased from the actual grayscale value (e.g., 180 grayscale) to the target grayscale value (e.g., 255 grayscale), thereby increasing the brightness of the voltage holding area.

[0095] This embodiment calculates the target brightness using La=Lr / (1-1 / N), enabling dynamic adaptation of the black insertion ratio to brightness compensation, thereby achieving precise matching of brightness in the voltage-holding region. The target grayscale value is found based on the linear relationship of the gamma curve corresponding to the first gamma voltage, ensuring that grayscale value adjustment is based on a linear relationship, avoiding nonlinear errors, and thus improving the accuracy of grayscale value compensation in the voltage-holding region.

[0096] In one embodiment, adjusting the brightness of at least the non-inserted frame to adjust the brightness uniformity of the inserted and non-inserted areas includes: increasing the first gamma voltage of the inserted area of ​​the non-inserted frame to a second gamma voltage, thereby increasing the brightness of the voltage-variable area.

[0097] It should be noted that the first gamma voltage corresponds to the first grayscale table and is used to control the display brightness, while the second gamma voltage corresponds to the second grayscale table. By increasing the first gamma voltage to the second gamma voltage, the brightness of the black insertion area is increased.

[0098] In this embodiment, instead of distinguishing between the voltage-holding region and the voltage-variable region, the method of directly increasing the first gamma voltage of the entire region to the second gamma voltage corresponding to the second grayscale table is used to improve the brightness of both the voltage-holding and voltage-variable regions, reduce computational load, and improve black-insertion efficiency. Based on this, the grayscale brightness of the entire display area after black-insertion can be increased to the brightness value of the non-black-insertion region.

[0099] This embodiment increases the brightness of the inserted black area by raising the first gamma voltage to the second gamma voltage in the non-inserted black frame, thereby achieving brightness consistency between the inserted black area and the non-inserted black area. This helps to improve the problem of light and dark boundary caused by local black insertion and further improves the visual quality of the displayed image.

[0100] In one embodiment, the second gamma voltage corresponds to the second grayscale table. The brightness corresponding to the same grayscale value in the second grayscale table and the first grayscale table satisfies the following relationship: L2=L1 / (1-1 / N), where L2 is the brightness corresponding to the same grayscale value in the second grayscale table, L1 is the brightness corresponding to the same grayscale value in the first grayscale table, 1 / N is the black insertion ratio, which means that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2.

[0101] It should be noted that, in the embodiments of this application, the second gamma voltage is used to control the display brightness of the black insertion area, corresponding to the second grayscale table, which achieves brightness compensation by adjusting the brightness value corresponding to the same grayscale value.

[0102] Specifically, after the system analyzes and displays the dynamic characteristics of the content to determine the black insertion area, the first gamma voltage of the voltage variable area is increased to the second gamma voltage to obtain the brightness L2 of the same gray level value in the second gray level table. The brightness L2 of the same gray level value in the second gray level table and the brightness L1 of the same gray level value in the first gray level table satisfy the relationship: L2=L1 / (1-1 / N). For example, gray level 255 in the first grayscale table corresponds to the maximum brightness Lmax. The brightness L1 of a certain gray level (e.g., gray level 230) in the first grayscale table is 80%*Lmax. When N=2, that is, the black insertion ratio is 1 / 2, then L2=160%*Lmax, that is, the brightness of a certain gray level (e.g., gray level 230) in the second grayscale table is twice the brightness of the corresponding brightness in the first grayscale table. When N=3, that is, the black insertion ratio is 1 / 3, then L2=120%*Lmax, that is, the brightness of a certain gray level (e.g., gray level 230) in the second grayscale table is 1.5 times the brightness of the corresponding brightness in the first grayscale table.

[0103] This embodiment sets a second grayscale table to satisfy the brightness relationship L2=L1 / (1-1 / N), so that the brightness compensation of the voltage-variable area in the black insertion area dynamically adapts to the black insertion ratio; the formula calculation ensures that the average brightness of the voltage-variable area is restored to the level before black insertion, thereby avoiding the brightness difference between the black insertion area and the non-black insertion area, which is beneficial to improving the uniformity of the display screen.

[0104] In one embodiment, at least the brightness of the non-inserted frame is adjusted to adjust the brightness uniformity of the inserted and non-inserted areas, including: increasing the backlight brightness of the inserted area of ​​the non-inserted frame.

[0105] It should be noted that the backlight system, as the light source component of the LCD display, is directly connected to the display panel to provide light. Specifically, during the display of non-inserted frames, the system controls the backlight drive circuit to individually increase the backlight brightness of the inserted areas in the non-inserted frames, restoring the average brightness of the inserted areas to the level before insertion, thereby eliminating brightness differences during display.

[0106] In this embodiment, when the backlight system is a mini LED backlight system, the brightness of the black insertion area of ​​a non-black insertion frame can be increased by independently adjusting the current value of a specific LED. When the backlight system uses a traditional LCD backlight unit, the backlight current of that area can be adjusted to achieve brightness compensation for the black insertion area of ​​the non-black insertion frame. It is understood that when displaying a non-black insertion frame, the system detects the position of the black insertion area and increases the backlight current or voltage of that area in real time, restoring the brightness of the black insertion area to be consistent with the non-black insertion area, thereby eliminating the brightness difference between the black insertion area and the non-black insertion area during display.

[0107] This embodiment increases the backlight brightness of the black insertion area in the non-black insertion frame, so that the brightness of the black insertion area matches that of the non-black insertion area when displayed, thereby eliminating the phenomenon of light and dark boundary, further improving the uniformity of the displayed image, and helping to improve the visual experience of dynamic ghosting.

[0108] In one embodiment, in response to the proportion of the black insertion area in the displayed image being greater than a first proportional threshold, the backlight brightness of the black insertion area in the non-black insertion frame is increased to raise the brightness of the black insertion area; in response to the proportion of the black insertion area in the displayed image being less than or equal to the first proportional threshold, the voltage holding area and the voltage variable area of ​​the black insertion area are identified, and the grayscale value of the voltage holding area is increased to raise the brightness of the voltage holding area; and / or, the first gamma voltage of the voltage variable area is increased to the second gamma voltage to raise the brightness of the voltage variable area.

[0109] The first proportional threshold can be set according to the size of the display area of ​​the display panel, for example, 5%; the first proportional threshold can also be set according to the size of the independently controlled sub-backlight area of ​​the display panel, for example, set as the area ratio of a single sub-backlight area to the display area. It can be understood that when the proportion of the black insertion area in the display screen is greater than the first proportional threshold, since the black insertion area is large, increasing the backlight brightness of the black insertion area in the non-black insertion frame is more efficient in raising the brightness of the black insertion area; when the proportion of the black insertion area in the display screen is less than the first proportional threshold, since the black insertion area is small, it is difficult to accurately adjust the backlight brightness of the corresponding area. Therefore, the voltage-holding area and the voltage-variable area of ​​the black insertion area are identified, and the grayscale value of the voltage-holding area is increased to improve the brightness of the voltage-holding area; and / or, the first gamma voltage of the voltage-variable area is increased to the second gamma voltage to improve the brightness of the voltage-variable area.

[0110] The percentage of a black insertion area in the displayed image refers to the proportion of a single black insertion area within the displayed image. Since there may be multiple black insertion areas in the same displayed image, different brightness compensation methods can be selected based on the size of the black insertion area to further improve display quality.

[0111] It should be noted that, in this embodiment, the sub-backlight area refers to the smallest independently drivable area unit in the backlight module, such as a single LED or LED group in a mini LED backlight system, or an independent partition in an LCD backlight.

[0112] In another embodiment, in response to the number of independently controlled sub-backlight regions corresponding to the black insertion area being less than an integer threshold, the backlight brightness of the black insertion area in the non-black insertion frame is increased to raise the brightness of the black insertion area; in response to the proportion of the black insertion area in the display screen being greater than or equal to an integer threshold, the voltage-holding area and the voltage-variable area of ​​the black insertion area are identified, and the grayscale value of the voltage-holding area is increased to raise the brightness of the voltage-holding area; and / or, the first gamma voltage of the voltage-variable area is increased to the second gamma voltage to raise the brightness of the voltage-variable area. The integer threshold can be 4 to 10, for example, 5. Since increasing the backlight brightness increases power consumption significantly, increasing the backlight brightness to raise the brightness of the black insertion area when the number of independently controlled sub-backlight regions corresponding to the black insertion area is small can save power consumption.

[0113] In one embodiment, the backlight module of the display panel includes multiple independently controlled sub-backlight areas; performing local black insertion on the display screen based on the black insertion ratio and the black insertion area includes: calculating the minimum number of sub-backlight areas covering the black insertion area as the black insertion backlight area; turning off the backlight in the black insertion backlight area to perform backlight black insertion; increasing the backlight brightness of the black insertion area of ​​non-black insertion frames includes: increasing the backlight brightness in the black insertion backlight area.

[0114] It should be noted that, in this embodiment, the sub-backlight region refers to the smallest independently drivable area unit in the backlight module, such as a single LED or LED group in a mini LED backlight system, or an independent partition in an LCD backlight. The black-insertion backlight region refers to the set of smallest sub-backlight regions covering the black-insertion area in the displayed image. Understandably, when the system performs local black-insertion, it first analyzes the location of the black-insertion area, calculates the number of smallest sub-backlight regions covering that area, and defines it as the black-insertion backlight region. Specifically, during black-insertion frames, the backlight within the black-insertion backlight region is turned off to achieve the black-insertion operation; during non-black-insertion frames, the backlight brightness within the black-insertion backlight region is increased for brightness compensation.

[0115] This embodiment sets the backlight module to include multiple independently controlled sub-backlight regions, enabling the system to precisely control the backlight in the black insertion area, thereby reducing unnecessary backlight adjustments and further reducing system power consumption. By calculating the minimum number of sub-backlight regions covering the black insertion area as the black insertion backlight region, the black insertion operation only affects the necessary area, thereby optimizing resource utilization and helping to reduce the increase in system power consumption caused by current pulses. By turning off the backlight in the black insertion backlight region for backlight black insertion, the brightness reduction in the black insertion area is more precise, thereby improving the efficiency of local black insertion. By increasing the backlight brightness in the black insertion backlight region, the brightness of the black insertion region in the non-black insertion frame is matched with that of the non-black insertion region, thereby eliminating the phenomenon of light and dark boundary.

[0116] In one embodiment, at least the brightness of the non-inserted frame is adjusted to adjust the brightness uniformity of the inserted and non-inserted areas, including: lowering the grayscale value of the non-inserted area of ​​the non-inserted frame; and increasing the overall backlight brightness of the non-inserted frame.

[0117] It should be noted that the black insertion method provided in this application, after inserting black pixels into the display screen, in order to eliminate the uneven brightness problem between the inserted and non-inserted areas caused by black insertion, can, in addition to increasing the average brightness of the inserted area in the non-inserted frame to make the average brightness of the inserted and non-inserted areas in the non-inserted frame consistent, thereby improving the display quality of the display panel, also adjust the brightness of the non-inserted area in the non-inserted frame, that is, reduce the average brightness of the non-inserted area to be consistent with the average brightness of the inserted area, and then uniformly increase the brightness of the display screen by adjusting the backlight brightness, thereby improving the display quality of the display panel. Specifically, after the local black insertion operation, the system can adjust the grayscale value of the non-inserted area, that is, lower the grayscale value of the non-inserted area, and simultaneously increase the overall backlight brightness to uniformly increase the brightness of the display screen, making the average brightness of the inserted and non-inserted areas in the non-inserted frame consistent, thereby improving the display quality of the display panel.

[0118] In one embodiment, in response to the proportion of all black insertion areas in the displayed image being greater than a second proportional threshold, the grayscale value of the non-black insertion areas of the non-black insertion frames is lowered, while the overall backlight brightness is simultaneously increased to uniformly improve the brightness of the displayed image; in response to the proportion of all black insertion areas in the displayed image being less than or equal to the second proportional threshold, the voltage holding area and voltage variable area of ​​the black insertion area are identified, and the grayscale value of the voltage holding area is increased to improve the brightness of the voltage holding area; and / or, the first gamma voltage of the voltage variable area is increased to the second gamma voltage to improve the brightness of the voltage variable area.

[0119] The second proportion threshold can be greater than 50%, such as 70%, 80%, or 90%. When the proportion of all black-inserted areas in the displayed image is greater than the second proportion threshold, the area of ​​non-black-inserted areas is smaller. Lowering the grayscale value of the non-black-inserted areas of the non-black-inserted frames is easier to achieve than increasing the brightness of the black-inserted areas. Furthermore, by simultaneously increasing the overall backlight brightness, the brightness of the displayed image is uniformly improved, resulting in better display quality for the display panel.

[0120] In one embodiment, adjusting the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas further includes: lowering the grayscale value of the non-inserted areas of the inserted frames. It should be noted that in this embodiment, the proportion by which the grayscale value of the non-inserted areas of the inserted frames is lowered is the same as the proportion by which the grayscale value of the non-inserted areas of the non-inserted frames is lowered, thereby ensuring the brightness uniformity of the non-inserted areas of the inserted frames and the non-inserted areas of the non-inserted frames in the displayed image.

[0121] Specifically, when the system generates a black-insertion frame during the display process, it identifies the non-black-insertion area of ​​the black-insertion frame and then lowers the grayscale value of the non-black-insertion area of ​​the black-insertion frame, that is, it reduces the brightness of the non-black-insertion area of ​​the black-insertion frame to make it consistent with the brightness of the non-black-insertion area in the non-black-insertion frame, thereby adjusting the brightness uniformity of the black-insertion area and the non-black-insertion area.

[0122] Combination Figure 8 , Figure 8 This is a flowchart illustrating a second embodiment of the black insertion method provided in this application, and... Figure 1 The difference in this embodiment is that it further includes steps S35 and S350. In one embodiment, the black insertion method of this application further includes: detecting ambient light; in response to the brightness of the ambient light being within a brightness threshold range, performing the step: adjusting at least the brightness of the non-black insertion frame to adjust the brightness uniformity of the black insertion area and the non-black insertion area; in response to the brightness of the ambient light being outside a brightness threshold range, stopping the execution of the step: adjusting at least the brightness of the non-black insertion frame to adjust the brightness uniformity of the black insertion area and the non-black insertion area.

[0123] One method for detecting ambient light is to set up an ambient light sensor in the display system to directly detect the ambient light intensity corresponding to each sub-pixel.

[0124] Another method for detecting ambient light is to apply a voltage between the source and drain of the thin-film transistor in the display panel, and use the leakage current between the source and drain of the thin-film transistor to indirectly obtain the ambient light intensity corresponding to each sub-pixel of the detection thin-film transistor.

[0125] It is understandable that the brightness of the ambient light is not within a certain brightness threshold range. That is, when the brightness of the ambient light is too high or too low, the brightness difference between the black area and the non-black area is not easily perceived, and step S40 can be stopped.

[0126] This application embodiment reduces dynamic ghosting of the displayed image by determining the black insertion ratio based on the display panel refresh rate; it saves cost and energy by determining the black insertion area according to the display content and performing black insertion operation only on dynamic areas, avoiding invalid black insertion in static areas; and it improves the display quality of the display panel by adjusting the brightness of non-black insertion frames to make the brightness of black insertion areas and non-black insertion areas consistent, eliminating the brightness difference caused by black insertion operation.

[0127] like Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of an embodiment of the display panel provided in this application. In one embodiment, this application provides a display panel 1000, including a panel body 1001 and a black dot insertion control circuit 1002. The panel body and the black dot insertion control circuit are electrically connected, and the black dot insertion control circuit 1002 is used to execute the black dot insertion method in any of the above embodiments.

[0128] In some embodiments, the functions or modules of the apparatus provided in this disclosure can be used to perform the methods described in the above method embodiments. The specific implementation can be referred to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0129] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0130] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A black insertion method, characterized by, include: The black insertion ratio is determined based on the refresh rate of the display panel; Determine the black insertion area based on the displayed content; Based on the first grayscale table corresponding to the first gamma voltage, the image is displayed frame by frame, and the displayed image is partially interpolated based on the black insertion ratio and the black insertion area, thereby forming black-inserted frames and non-black-inserted frames. Adjust the brightness of at least the non-inserted frames to adjust the brightness uniformity of the inserted and non-inserted areas; Blackout methods also include: detecting ambient light; In response to the ambient light brightness being within a brightness threshold range, the following steps are performed: at least the brightness of the non-inserted frame is adjusted, thereby adjusting the brightness uniformity of the inserted and non-inserted areas; If the ambient light brightness is not within a certain brightness threshold range, then stop executing the following steps: at least adjust the brightness of the non-inserted frame to adjust the brightness uniformity of the inserted and non-inserted areas. Wherein, adjusting the brightness of at least the non-intercalated frame to adjust the brightness uniformity of the intercalated and non-intercalated areas includes: The region consisting of sub-pixels whose actual brightness ratio to the maximum brightness ratio of the first grayscale table is lower than a threshold in the black insertion region of the non-black insertion frame is defined as a voltage-maintaining region; the region consisting of sub-pixels whose actual brightness ratio to the maximum brightness ratio of the first grayscale table is higher than the threshold in the black insertion region of the non-black insertion frame is defined as a voltage-variable region. Increase the grayscale value of the voltage-holding region to improve the brightness of the voltage-holding region; and / or increase the first gamma voltage of the voltage-variable region to the second gamma voltage to improve the brightness of the voltage-variable region.

2. The black insertion method of claim 1, wherein, The step of increasing the grayscale value of the voltage-holding region to improve the brightness of the voltage-holding region includes: Based on the black insertion ratio, the target brightness of the voltage holding region is calculated by La=Lr / (1-1 / N); where La is the target brightness of the voltage holding region, Lr is the actual brightness of the voltage holding region before black insertion, and 1 / N is the black insertion ratio, which means that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2. The grayscale value corresponding to the target brightness of the voltage holding region is found based on the linear relationship of the gamma curve corresponding to the first gamma voltage, and is used as the target grayscale value. Maintain the first gamma voltage and increase the grayscale value of the voltage holding region to the target grayscale value.

3. The black insertion method according to claim 1, characterized in that, The step of adjusting the brightness of at least the non-intercalated frames, thereby adjusting the brightness uniformity of the intercalated and non-intercalated areas, includes: The first gamma voltage of the black insertion area of ​​the non-black insertion frame is increased to the second gamma voltage, thereby increasing the brightness of the voltage-variable area.

4. The black insertion method according to claim 1 or 3, characterized in that, The second gamma voltage corresponds to the second grayscale table, and the brightness corresponding to the same grayscale value in the second grayscale table as in the first grayscale table satisfies the following relationship: L2 = L1 / (1-1 / N), where L2 is the brightness of the same gray level value in the second gray level table, L1 is the brightness of the same gray level value in the first gray level table, and 1 / N is the black insertion ratio, which means that one black frame is inserted every N frames, and N is a positive integer greater than or equal to 2.

5. The black insertion method according to claim 1, characterized in that, The step of adjusting the brightness of at least the non-intercalated frames, thereby adjusting the brightness uniformity of the intercalated and non-intercalated areas, includes: Increase the backlight brightness of the black-inserted area in the non-black-inserted frame; The backlight module of the display panel includes multiple independently controlled sub-backlight areas; the partial black insertion of the display screen based on the black insertion ratio and the black insertion area includes: Increasing the backlight brightness of the black-inserted region in the non-black-inserted frame includes: Among them, the minimum number of sub-backlight regions covering the black insertion area are calculated and defined as the black insertion backlight area; Turn off the backlight in the black backlight area to perform backlight black insertion; Increasing the backlight brightness of the black-inserted region in the non-black-inserted frame includes: Increase the backlight brightness in the black-inserted backlight area.

6. The black insertion method of claim 1, wherein, The step of adjusting the brightness of at least the non-intercalated frames, thereby adjusting the brightness uniformity of the intercalated and non-intercalated areas, includes: Lower the grayscale value of the non-interpolated region in the non-interpolated frame; Increase the overall backlight brightness of the non-interpolated black frames.

7. The insertion black method of claim 6, wherein, The step of adjusting the brightness of at least the non-inserted frames, thereby adjusting the brightness uniformity of the inserted and non-inserted areas, further includes: Lower the grayscale value of the non-interpolated region in the interpolated frame.

8. A display panel, characterized by, The device includes a panel body and a black dot insertion control circuit, wherein the panel body and the black dot insertion control circuit are electrically connected, and the black dot insertion control circuit is used to perform the black dot insertion method according to any one of claims 1 to 7.

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