A display control method, display chip and display device

Abstract

The application discloses a display control method, a display chip and a display device. The method comprises the following steps: determining a target light emitting unit based on initial dimming data corresponding to each of a plurality of light emitting units in a backlight unit; adjusting the initial dimming data corresponding to the target light emitting unit to obtain target dimming data, and controlling the light emitting color of the target light emitting unit according to the target dimming data, wherein the difference between a plurality of target dimming components included in the target dimming data is smaller than the difference between a plurality of initial dimming components included in the initial dimming data. By adjusting the initial dimming data of the target light emitting unit with a large color difference between the light emitting color and the color of the surrounding area, the values of the target dimming components in the target dimming data are made to be close to each other, so that the target light emitting unit emits white light or approximate white light, thereby reducing or even eliminating the influence caused by the color light halo phenomenon and improving the image display effect.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display control method, a display chip, and a display device. Background Technology

[0002] With the rapid development of display backlight technology, the backlight system, as a core component determining the color performance of the displayed image, has evolved from traditional monochrome backlighting to color backlighting to further improve the color gamut coverage and color reproduction accuracy of display devices. In color backlighting systems, the structure of the light-emitting units has changed: in traditional monochrome backlighting, a single light-emitting unit contains only one monochrome LED (such as a white LED), while a single light-emitting unit in color backlighting is usually composed of multiple LEDs of different colors (such as red, green, and blue LEDs), or multiple color LEDs are packaged into one unit through integration technology to achieve rich color output through light mixing.

[0003] In a color backlight system, each light-emitting unit can be independently driven and controlled based on local dimming technology to present backlights of different colors and brightness. However, due to the diffusion characteristics of light, in actual use, when the light emitted by adjacent light-emitting units differs significantly in color, the different colors of light will mix in adjacent areas after diffusion, presenting a new color, i.e., the color-halo phenomenon. This color change caused by mixing will directly cause color distortion in the displayed image, bringing obvious visual discomfort to users and seriously affecting the display effect. Summary of the Invention

[0004] This application provides a display control method, a display chip, and a display device to solve the problem of color distortion in the display screen caused by color halo phenomenon in existing color backlight systems.

[0005] In a first aspect, this application provides a display control method, comprising:

[0006] Based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit, the target light-emitting unit is determined. Here, a light-emitting unit includes multiple light-emitting sub-units, and an initial dimming data includes multiple initial dimming components. The multiple initial dimming components correspond one-to-one with the multiple light-emitting sub-units.

[0007] Adjust the initial dimming data corresponding to the target light-emitting unit to obtain the target dimming data, and control the emission color of the target light-emitting unit according to the target dimming data. The difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data.

[0008] Secondly, this application provides a display chip, comprising:

[0009] The boundary detection module is used to determine the target light-emitting unit based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit. Here, a light-emitting unit includes multiple light-emitting sub-units, and the initial dimming data corresponding to a light-emitting unit includes the initial dimming components corresponding to each of the multiple light-emitting sub-units.

[0010] The dimming data processing module is used to adjust the initial dimming data corresponding to the target light-emitting unit to obtain the target dimming data, and control the emission color of the target light-emitting unit according to the target dimming data. The difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data.

[0011] Thirdly, this application provides a display device, including a display panel, a backlight module, and a display chip as provided in any of the second aspects above, wherein:

[0012] The display chip is electrically connected to the display panel and the backlight module respectively; the backlight module includes a backlight panel for carrying backlight units, and the backlight units are provided with multiple light-emitting units, and the backlight panel is arranged opposite to the display panel.

[0013] The display panel is used to: receive initial pixel data sent by the display chip, and display images based on the initial pixel data.

[0014] The beneficial effects of the embodiments of this application are as follows:

[0015] The display control method, display chip, and display device provided in this application identify a target light-emitting unit whose emission color is significantly different from that of adjacent light-emitting units. The initial dimming data of the target light-emitting unit is adjusted so that the values ​​of each target dimming component in the adjusted target dimming data are nearly identical. This causes the target light-emitting unit to emit near-white light under the control of the target dimming data, thereby reducing or even eliminating the influence of the colored backlight emitted by the target light-emitting unit on the colored backlight of other colors emitted by the adjacent second light-emitting unit. This avoids the generation of colored halos in adjacent areas after the diffusion of different colored backlights, achieving the purpose of improving image display effect and quality. The resulting display screen possesses high color purity, high color contrast, and high definition, further optimizing the user's visual experience. Attached Figure Description

[0016] Figure 1A This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0017] Figure 1B This is a schematic diagram of the structure of another display device provided in an embodiment of this application;

[0018] Figure 1C This is a schematic diagram of the structure of a light-emitting unit provided in an embodiment of this application;

[0019] Figure 2 A schematic diagram illustrating the workflow of a display control method provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a backlight unit provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of another backlight unit provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of another backlight unit provided in an embodiment of this application;

[0023] Figure 6 A schematic diagram showing a comparison between an initial dimming component and a target dimming component provided for an embodiment of this application;

[0024] Figure 7 A comparative schematic diagram of the light emission modes of a target light-emitting unit provided in an embodiment of this application;

[0025] Figure 8 A schematic diagram illustrating the workflow of yet another display control method provided in this application embodiment;

[0026] Figure 9 This is a schematic diagram of a display device provided in an embodiment of this application;

[0027] Figure 10 This is a schematic diagram illustrating the complete workflow of a display control method provided in an embodiment of this application.

[0028] Figure 11 This is a schematic diagram of the structure of a display chip provided in an embodiment of this application. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The specific operational methods in the method embodiments can also be applied to the device embodiments or system embodiments. It should be noted that in the description of this application, "multiple" can be understood as "at least two". Furthermore, it should be understood that in the description of this application, terms such as "first" and "second" are used only for distinguishing purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.

[0030] It should be noted that the same reference numerals in the accompanying drawings of this application denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but may be modified as needed, and all modifications are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0031] Currently, in color backlight systems, each light-emitting unit can be independently driven and controlled based on local dimming technology to present backlights of different colors and brightness. However, because a large number of light-emitting units are integrated on the backlight panel, and the spacing between each unit is relatively close, when adjacent light-emitting units emit light of different colors, the light of different colors will overlap in adjacent areas after diffusion, forming an unexpected color halo. Ultimately, when the display panel shows a color image, an unexpected intermediate color appears at the boundary between different colors. This intermediate color will directly penetrate the display panel, causing color distortion in the displayed image, resulting in obvious visual discomfort for users and seriously affecting the display effect.

[0032] In view of this, embodiments of this application provide a display control method, a display chip, and a display device. By adjusting the dimming data of light-emitting units that are adjacent in position and have large differences in emission color, the light-emitting units present a near-white light or white light during actual lighting. This avoids the generation of colored halos in adjacent areas after the backlight of different colors diffuses, thereby improving the image display effect and enhancing the image display quality. The result is a display screen with high color purity, high color contrast, and high definition, thus optimizing the user's visual experience.

[0033] The objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features described herein can be combined with each other without conflict.

[0034] The display control method, display chip, and display device provided in the embodiments of this application are described below with reference to the accompanying drawings.

[0035] Reference Figure 1A and Figure 1BThe display device 2 includes a display chip 21, a display panel 22, and a backlight module 23; the display chip 21 is electrically connected to both the display panel 22 and the backlight module 23. The backlight module 23 includes at least one dimming controller 231 and a backlight panel 232, with the display chip 21 electrically connected to at least one dimming controller 231. The backlight panel 232 is provided with multiple dimmers 232-A and multiple light-emitting units 232-B, all arranged in an array. The dimming controller 231 is electrically connected to the dimmers 232-A, and each dimmer 232-A is electrically connected to at least one light-emitting unit 232-B. Figure 1A and Figure 1B (This is an example where one dimmer 232-A is electrically connected to four light-emitting units 232-B).

[0036] In the embodiments of this application, reference is made to Figure 1A and Figure 1B The display chip 21 can be any of the following: a system-on-chip (SoC), a timing controller (TCON), or a timing controller embedded local dimming (TELD), depending on the specific architecture of the display device. The display chip 21 and each dimming controller 231 can be connected via a serial peripheral interface (SPI) bus.

[0037] Taking a light-emitting unit 232-B comprising 3 light-emitting subunits as an example, refer to... Figure 1C The light-emitting unit 232-B may include light-emitting subunits L1, L2, and L3. Light-emitting subunit L1 may use a red (Red, R) light-emitting chip, light-emitting subunit L2 may use a green (Green, G) light-emitting chip, and light-emitting subunit L3 may use a blue (Blue, B) light-emitting chip. In practical applications, each light-emitting subunit may use a sub-millimeter light-emitting diode (Mini LED), etc., and through the light mixing effect of different light-emitting subunits within a single light-emitting unit, rich color output can be achieved.

[0038] It should be understood that, Figure 1C This is merely an example of a light-emitting unit and should not be construed as limiting the light-emitting unit provided in this application embodiment. Specifically, this application embodiment does not limit the specific number of light-emitting sub-units in the light-emitting unit, nor the color of each light-emitting sub-unit, which can be flexibly set according to actual application requirements. For example, the above-mentioned light-emitting unit may also include 4 light-emitting sub-units, with colors of red, yellow, blue, and white respectively.

[0039] Furthermore, it should be understood that, Figure 1A and Figure 1B This is merely an example of a display device and should not be construed as limiting the display device provided in this application. Specifically, this application does not limit the specific connection method between the display chip and the dimming controller, or between the dimming controller and the dimmer; these can be flexibly configured according to the architecture design of the display device. In the display device provided in this application, the number of dimming controllers, the number of dimmers, the number of light-emitting units, the number of dimmers connected to one dimming controller, and the number of light-emitting units connected to one dimmer are all not limited. These quantities can be flexibly configured according to actual business needs (such as performance requirements) and / or actual architecture design (such as display device size).

[0040] In specific implementation, refer to Figure 1A and Figure 1B The display chip 21 can process the initial pixel data using local dimming technology to generate initial dimming data. This initial pixel data is obtained after a series of image optimization processes on the video stream data or image data. The display chip 21 will use the display control method provided in this application embodiment to process the initial dimming data / initial pixel data (see subsequent embodiments for details), and send the obtained target pixel data and initial pixel data to the display panel 22 to control the display panel 22 to display images. At the same time, the obtained target dimming data and initial dimming data will be sent to the dimming controller 231. After receiving the dimming data (target dimming data or initial dimming data), the dimming controller 231 will send the dimming data to the dimmer 232-A electrically connected to itself. The dimmer 232-A will generate a dimming control signal according to the dimming data it receives, and control the light-emitting unit 232-B electrically connected to itself to emit backlight with corresponding brightness and color according to the dimming control signal. When different light-emitting units 232-B emit backlights of different brightness and color, the light-emitting units 232-B on the backlight unit 232 project the light onto the display panel 22, and the corresponding image can be displayed on the display panel 22 to achieve image display.

[0041] The display control method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings:

[0042] This display control method can be applied to... Figure 1A or Figure 1B The display chip 21 shown is used to process the initial dimming data / initial pixel data to reduce or even eliminate the color halo phenomenon in the color backlight system and optimize the image display effect of the display device 2.

[0043] Reference Figure 2The display control method may include:

[0044] Step S201: Based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit, determine the target light-emitting unit. Here, a light-emitting unit includes multiple light-emitting sub-units, and an initial dimming data includes multiple initial dimming components. The multiple initial dimming components correspond one-to-one with the multiple light-emitting sub-units.

[0045] In this embodiment, the number of initial dimming components included in the initial dimming data is consistent with the number of light-emitting sub-units included in the light-emitting unit. For example, a light-emitting unit may include 3 light-emitting sub-units, and the light emission colors of these 3 light-emitting sub-units are different from each other. Then, the initial dimming data corresponding to the light-emitting unit includes 3 initial dimming components, and one initial dimming component corresponds to one light-emitting sub-unit, which is used to control the light emission brightness of its corresponding light-emitting sub-unit.

[0046] Reference Figure 3 In the backlight unit 23, the light-emitting unit 232-B in the left half-region D1 emits red light, and the corresponding part of the display panel 22 displays a red image; the light-emitting unit 232-B in the right half-region D2 emits white light, and the corresponding part of the display panel 22 displays a white image. Because the light-emitting units 232-B in the left half-region D1 and the right half-region D2 have a significant color difference, multiple light-emitting units near the boundary line C1 between the left half-region D1 and the right half-region D2 are all considered as the target light-emitting unit 232-B1. Figure 3 Each light-emitting unit located within the dashed box E1 is a target light-emitting unit 232-B1.

[0047] Reference Figure 3 ,by Figure 3 Taking the target light-emitting unit 232-B1 located in the second row and second column as an example, eight second light-emitting units 232-B2 (i.e., multiple light-emitting units located within the dashed box E2) are arranged around the target light-emitting unit 232-B1. These eight second light-emitting units 232-B2 are located above, below, left, right, upper left, lower left, upper right, and lower right of the target light-emitting unit 232-B1, respectively. Among these eight second light-emitting units 232-B2, the three second light-emitting units 232-B2 located to the right, upper right, and lower right of the target light-emitting unit 232-B1 emit a different color than the target light-emitting unit 232-B1, while the remaining second light-emitting units 232-B2 emit the same color as the target light-emitting unit 232-B1.

[0048] In some embodiments, the display chip 21 may include the following during the execution of step S201:

[0049] Step S201-1: For any light-emitting unit in the backlight unit, determine the dimming data difference corresponding to the light-emitting unit based on the initial dimming data corresponding to the light-emitting unit and the initial dimming data corresponding to the multiple light-emitting units surrounding the light-emitting unit.

[0050] The number of multiple light-emitting units surrounding the light-emitting unit is determined according to a preset number threshold, and the dimming data difference is used to characterize the degree of color difference between the light-emitting unit and the multiple light-emitting units surrounding it.

[0051] In this embodiment, the preset quantity threshold can be expressed as m×n (where m and n are both positive integers). Then, in determining the dimming data difference corresponding to a certain light-emitting unit, the multiple light-emitting units surrounding that unit constitute an m×n light-emitting unit array centered on that unit. Therefore, the number of multiple light-emitting units surrounding that unit, num1, is equal to m×n-1. Furthermore, it should be understood that this embodiment does not limit the specific values ​​of m and n, nor does it limit the relationship between m and n; they can be flexibly set according to actual business needs. For example, m=n=3; m=5, n=3; or m=3, n=5.

[0052] Taking a preset quantity threshold of 3×3 as an example, refer to Figure 4 In the backlight unit 23, among the multiple light-emitting units 232-B arranged in an array, if one of the light-emitting units L22 is taken as the current light-emitting unit, then there are a total of 8 light-emitting units surrounding the light-emitting unit L22, namely: light-emitting units L11, L12, L13, L21, L23, L31, L32 and L33.

[0053] In this embodiment of the application, since an initial dimming data includes multiple dimming data components, and one dimming data component corresponds to one light-emitting subunit, the display chip 21 can adopt the following method during the execution of step S201-1:

[0054] In some embodiments, the display chip 21 may determine the dimming data difference in the following manner: calculate the absolute value of the difference between the fourth initial dimming component and a plurality of fifth initial dimming components respectively to obtain a plurality of component differences; calculate the sum of the plurality of component differences to obtain the dimming data difference corresponding to the light-emitting unit. Wherein, the fourth initial dimming component is any one of the initial dimming components in the initial dimming data corresponding to the current light-emitting unit, and the plurality of fifth initial dimming components are the initial dimming components of the same type of light-emitting subunit as the fourth initial dimming component in the initial dimming data corresponding to the plurality of light-emitting units located around the light-emitting unit.

[0055] For ease of explanation, the following embodiments all use a light-emitting unit including three light-emitting sub-units R, G, and B, and the initial dimming data including three initial dimming components R, G, and B as an example for illustration:

[0056] Reference Figure 4 The current light-emitting unit is light-emitting unit L22. The initial dimming data corresponding to light-emitting unit L22 can be represented as: [R22, G22, B22], where the initial dimming component R22 corresponds to the R light-emitting sub-unit in light-emitting unit L22, the initial dimming component G22 corresponds to the G light-emitting sub-unit in light-emitting unit L22, and the initial dimming component B22 corresponds to the B light-emitting sub-unit in light-emitting unit L22. Furthermore, the representation of the initial dimming data corresponding to each light-emitting unit surrounding light-emitting unit L22 can be referenced from the representation of the initial dimming data of light-emitting unit L22, and will not be repeated here.

[0057] In this embodiment, when the initial dimming component R22 is used as the fourth initial backlight component, the multiple fifth initial dimming components are, in sequence: initial dimming components R11, R12, R13, R21, R23, R31, R32, and R33. At this time, the determined component differences are, in sequence: |R22-R11|, |R22-R12|, ..., |R22-R33|, where || is used to characterize the absolute value operation. Furthermore, since the processing of initial dimming components G22 and B22 as the fourth initial backlight components is similar to that of initial dimming component R22, it can be referred to the implementation corresponding to initial dimming component R22, and will not be repeated here.

[0058] Therefore, after the display chip 21 compares and analyzes the initial dimming data of the light-emitting unit L22 and the initial dimming data of its surrounding light-emitting units to obtain all component differences, the dimming data difference Color_diff_L22 determined based on all component differences can be expressed as:

[0059] Color_diff_L22=|R22-R11|+…+|R22-R33|+|G22-G11|+…+|G22-G33|+|B22-B11|+…+|B22-B33|.

[0060] In this embodiment, the larger the dimming data difference value corresponding to the light-emitting unit, the greater the color difference between the light-emitting unit and its surrounding light-emitting units; the closer the dimming data difference value corresponding to the light-emitting unit is to 0, the smaller the color difference between the light-emitting unit and its surrounding light-emitting units. Therefore, this dimming data difference value can accurately reflect the degree of color difference between each light-emitting unit and its surrounding light-emitting units, and can be used to identify light-emitting units that are adjacent in position but have a large difference in emitted color, thus exhibiting high accuracy.

[0061] Step S201-2: Select the target light-emitting unit from among the multiple light-emitting units based on the dimming data difference corresponding to each of the multiple light-emitting units.

[0062] The target light-emitting unit emits a different color than the light-emitting units adjacent to it.

[0063] In one embodiment, the display chip 21 may adopt the following method during the execution of step S201-2: among the dimming data differences corresponding to each of the multiple light-emitting units, select a dimming data difference that is greater than or equal to a preset threshold as the target dimming data difference; and take the light-emitting unit corresponding to the target dimming data difference as the target light-emitting unit.

[0064] Therefore, based on these dimming data differences, two adjacent backlight areas can be determined in the backlight unit. Each backlight area includes multiple light-emitting units, and the dimming data differences of these multiple light-emitting units are similar (i.e., less than a preset threshold). The dimming data differences of the light-emitting units in two adjacent backlight zones differ significantly (i.e., greater than or equal to a preset threshold). The light-emitting unit set at the boundary between two adjacent backlight zones is the target light-emitting unit.

[0065] It should be noted that the embodiments of this application do not limit the specific value of the preset threshold, which can be flexibly set according to actual business needs. For example, the preset threshold can be set to 10.

[0066] Reference Figure 5 The backlight unit 23 is divided into two adjacent backlight regions 23-A and 23-B. Each light-emitting unit in backlight region 23-A emits red light, and each light-emitting unit in backlight region 23-B emits green light. Since there is a large color difference (i.e., a difference between red and green) between the light-emitting units near the dividing line C2 in backlight regions 23-A and 23-B, the dimming data difference corresponding to these light-emitting units will be large (i.e., greater than or equal to a preset threshold). Therefore, the column of light-emitting units near the dividing line C2 in backlight region 23-A is taken as the target light-emitting units, and the column of light-emitting units near the dividing line C2 in backlight region 23-B is also taken as the target light-emitting units.

[0067] Therefore, by using the light-emitting unit corresponding to the dimming data difference greater than or equal to the preset threshold as the target light-emitting unit, and only performing subsequent processing and adjustment on the initial dimming data of the target light-emitting unit, the amount of data processing can be reduced, computing resources can be saved, data processing speed can be improved, and the overall performance of the display device can be improved.

[0068] In another embodiment, the display chip 21 may also adopt the following method during the execution of step S201-2: based on the dimming data difference corresponding to each of the multiple light-emitting units, determine the first gain coefficient corresponding to each of the multiple light-emitting units, where 0≤first gain coefficient≤1; and take the light-emitting unit corresponding to the first gain coefficient that is greater than or equal to the preset coefficient threshold as the target light-emitting unit.

[0069] In this embodiment, after obtaining the dimming data difference corresponding to each of the multiple light-emitting units, the display chip 21 further calculates the first gain coefficient corresponding to each light-emitting unit (the specific implementation is detailed in subsequent embodiments). This first gain coefficient can be used to characterize the degree of deviation between the emission color of the current light-emitting unit and the surrounding light-emitting units. The closer the first gain coefficient is to 1, the greater the emission color deviation between the current light-emitting unit and the surrounding light-emitting units; the closer the first gain coefficient is to 0, the smaller the emission color deviation between the current light-emitting unit and the surrounding light-emitting units. Then, the display chip 21 can identify the relationship between each first gain coefficient and a preset coefficient threshold to select the target light-emitting unit with a larger color difference from the surrounding units.

[0070] It should be noted that the embodiments of this application do not limit the specific value of the preset coefficient threshold, which can be flexibly set according to actual business needs. For example, the preset coefficient threshold can be set to 0.1.

[0071] Therefore, by using the light-emitting unit corresponding to the dimming data difference greater than or equal to the preset threshold as the target light-emitting unit, the light-emitting unit area with a large color change range can be accurately determined and targeted adjustments can be made to effectively improve the color mixing phenomenon in the color boundary area and optimize the image display quality.

[0072] After identifying multiple target light-emitting units, if the theoretical emission color of the target light-emitting unit (determined based on the initial dimming data) is white, the initial dimming data of the target light-emitting unit can be kept unchanged since white light does not cause a colored halo phenomenon. If the theoretical emission color of the target light-emitting unit is colored, the initial dimming data of the target light-emitting unit can be adjusted as follows:

[0073] Step S202: Adjust the initial dimming data corresponding to the target light-emitting unit to obtain target dimming data, and control the emission color of the target light-emitting unit according to the target dimming data. The difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data.

[0074] Therefore, by identifying a target light-emitting unit whose emission color is significantly different from that of adjacent light-emitting units, and adjusting the initial dimming data of the target light-emitting unit, the values ​​of each target dimming component in the adjusted target dimming data are made to be nearly consistent. This allows the target light-emitting unit to emit near-white light under the control of the target dimming data, thereby reducing or even eliminating the influence of the colored backlight emitted by the target light-emitting unit on the colored backlight of other colors emitted by adjacent light-emitting units. This also avoids the phenomenon of colored halos in adjacent areas after the backlight of different colors diffuses, thereby improving the image display effect and enhancing the image display quality. The resulting display screen has the characteristics of high color purity, high color contrast, and high definition, thus optimizing the user's visual experience.

[0075] In some embodiments, the display chip 21 may include the following during step S202:

[0076] Step S202-1: Based on multiple first initial dimming data and the initial dimming data corresponding to the target light-emitting unit, determine the first gain coefficient corresponding to the target light-emitting unit.

[0077] Among them, the multiple first initial dimming data are the initial dimming data corresponding to each of the multiple first light-emitting units. The multiple first light-emitting units are multiple light-emitting units disposed around the target light-emitting unit in the backlight unit. The multiple first light-emitting units include at least one or more light-emitting units adjacent to the target light-emitting unit.

[0078] In the foregoing embodiment, the display chip 21 determines the dimming data difference corresponding to each light-emitting unit based on the initial dimming data of each light-emitting unit and the initial dimming data of multiple light-emitting units surrounding the light-emitting unit, that is, determines the dimming data difference corresponding to the target light-emitting unit, and determines the first gain coefficient corresponding to the target light-emitting unit accordingly, as follows:

[0079] In some embodiments, the display chip 21 may include the following during the execution of step S202-1:

[0080] Step S202-1-A: Determine the dimming data difference value corresponding to the target light-emitting unit; the dimming data difference value is used to characterize the degree of color difference between the target light-emitting unit and multiple first light-emitting units.

[0081] The method for determining the dimming data difference of the target light-emitting unit can refer to the specific implementation method of the dimming data difference of the light-emitting unit L22 in the aforementioned embodiment, and will not be repeated here.

[0082] Step S202-1-B: Based on multiple first initial dimming data and the initial dimming data corresponding to the target light-emitting unit, the difference in dimming data is normalized to obtain the first gain coefficient.

[0083] In some embodiments, the process of performing step S202-1-B may include:

[0084] Step S301: Determine the maximum initial dimming component among the multiple initial dimming components included in the initial dimming data corresponding to the target light-emitting unit and the multiple initial dimming components included in each of the multiple first initial dimming data.

[0085] Please continue to refer to Figure 4 Taking the target light-emitting unit as light-emitting unit L22 as an example, the multiple first light-emitting units around the target light-emitting unit are: light-emitting units L11, L12, L13, L21, L23, L31, L32 and L33; correspondingly, the multiple first initial dimming data are the initial dimming data of each of these multiple first light-emitting units. The display chip 21 will compare the initial dimming data [R22, G22, B22] of the light-emitting unit L22 with each initial dimming component in the above multiple first initial dimming data, and take the maximum value of the initial dimming component as the maximum initial dimming component.

[0086] For example, assuming that the initial dimming data of light-emitting units L22, L11, L12, L21, L31 and L32 are all [50, 100, 20], and the initial dimming data of light-emitting units L13, L23 and L33 are all [0, 10, 200], then 200 is taken as the maximum initial dimming component.

[0087] Step S302: Determine the maximum initial dimming value based on the maximum initial dimming component and the total number of light-emitting sub-units included in the multiple first light-emitting units.

[0088] In this embodiment, the display chip 21 determines the total number of light-emitting sub-units in the plurality of first light-emitting units. Specifically, if the total number of second light-emitting units surrounding the target light-emitting unit and the surrounding area is num1 = m × n - 1, then the total number of light-emitting sub-units can be expressed as: num2 = num1 × k = (m × n - 1) × k; k represents the number of light-emitting sub-units in the light-emitting unit.

[0089] For example, assuming that the number of first light-emitting units set around the target light-emitting unit is 8 (i.e., num1=8), and each light-emitting unit includes 3 (i.e., k=3) light-emitting sub-units, then the total number of light-emitting sub-units is: num2=24.

[0090] In some embodiments, after obtaining the total number of light-emitting sub-units, the display chip 21 can use the product of the maximum initial dimming component and the total number of light-emitting sub-units included in the plurality of first light-emitting units as the maximum initial dimming value. Specifically, the maximum initial dimming value Max_Color can be expressed as:

[0091] Max_Color=Max_Color_weight×num2;

[0092] Max_Color_weight represents the maximum initial dimming component, and num2 represents the total number of light-emitting sub-units in multiple first light-emitting units.

[0093] Step S303: Calculate the ratio of the dimming data difference to the maximum initial dimming value to obtain the first gain coefficient.

[0094] In this embodiment of the application, the first gain coefficient Gain1 corresponding to the target light-emitting unit can be expressed as:

[0095] Gain1=Color_diff / Max_Color=Color_diff / (Max_Color_weight×num2);

[0096] Wherein, Color_diff represents the dimming data difference corresponding to the target light-emitting unit, and Max_Color represents the maximum initial dimming value. The first gain coefficient Gain1 satisfies: 0≤Gain1≤1.

[0097] In the above embodiments, since the first gain coefficient is determined based on the degree of color difference between the target light-emitting unit and the first light-emitting unit, adjusting the initial dimming data of the target light-emitting unit using the first gain coefficient can make the actual emitted color of the target light-emitting unit approach white. This effectively prevents the emitted color of the target light-emitting unit from spreading to its adjacent areas and causing color mixing, reducing the probability of color halo phenomenon and improving the color accuracy of the image display. Furthermore, only light-emitting units with large color variations need to be adjusted specifically, and the first gain coefficient of each light-emitting unit that needs adjustment is determined based on the current emission status of its surrounding light-emitting units. Therefore, the influence of light diffusion effect of light-emitting units in areas with large color variations can be minimized, improving the overall image display effect and optimizing the user's visual experience.

[0098] Furthermore, it should be understood that if the display chip 21 determines the target light-emitting unit based on the first gain coefficient and preset coefficient threshold of each light-emitting unit during step S201-2, then the first gain coefficient of the target light-emitting unit can be directly determined during step S202-1. This application embodiment does not impose any limitations on this.

[0099] Step S202-2: Adjust the initial dimming data corresponding to the target light-emitting unit according to the first gain coefficient to obtain the target dimming data.

[0100] In some embodiments, the display chip 21 may include the following during the execution of step S202-2:

[0101] Step S202-2-A: Among the multiple initial dimming components included in the first initial dimming data, determine the first initial dimming component and multiple second initial dimming components; the first initial dimming component is the maximum value among the multiple initial dimming components, and the second initial dimming component is the other initial dimming component among the multiple initial dimming components besides the first initial dimming component.

[0102] Taking the target light-emitting unit as light-emitting unit L22 as an example, refer to... Figure 4 and Figure 6 , Figure 6 In Figure (a), the values ​​of each initial dimming component in the initial dimming data of the light-emitting unit L22 are represented. Figure 6 (b) shows the numerical representation of each target dimming component in the target dimming data determined using the first gain coefficient (0.5). Figure 6 In the middle (c), the numerical representation of each target dimming component in the target dimming data determined by the first gain coefficient (1) is shown.

[0103] Depend on Figure 6 As shown in (a), in the initial dimming data corresponding to the light-emitting unit L22, the initial dimming component R22=50, the initial dimming component G22=100, and the initial dimming component B22=20. Therefore, the display chip 21 will use the initial dimming component G22 as the first initial dimming component, and use both the initial dimming components R22 and B22 as the second initial dimming components.

[0104] Step S202-2-B: For any second initial dimming component, increase the second initial dimming component according to the first initial dimming component and the first gain coefficient to obtain a target dimming component in the target dimming data, and use the first initial dimming component as a target dimming component in the target dimming data.

[0105] In some embodiments, during step S202-2-B, the display chip 21 can perform the following: for any second initial dimming component, the absolute value of the difference between the first initial dimming component and the second initial dimming component can be calculated, and the product of this difference and the first gain coefficient can be used to obtain the dimming increment; the sum of the second initial dimming component and the dimming increment can be used as a target dimming component in the target dimming data. Furthermore, the display chip 21 can also directly use the first initial dimming component as a target dimming component in the target dimming data. Thus, each target dimming component in the target dimming data can be obtained, thereby determining the target dimming data.

[0106] In this embodiment of the application, the initial dimming data of the target light-emitting unit is [R, G, B]. If the first initial dimming component is the initial dimming component G of the target light-emitting unit, and the second initial dimming component is the initial dimming components R and B of the target light-emitting unit, then each target dimming component in the target dimming data [R', G', B'] can be expressed as:

[0107] Target dimming component R' = R + ΔR = R + (G - R) × Gain1;

[0108] Target dimming component B' = B + ΔB = B + (G - B) × Gain1;

[0109] Where ΔR and ΔB represent the dimming increments corresponding to different initial dimming components.

[0110] In addition, the target dimming component G'=G.

[0111] Reference Figure 4 and Figure 6 ,Depend on Figure 6 As shown in (b), when the first gain coefficient Gain1 corresponding to the light-emitting unit L22 determined by the display chip 21 is 0.5, the R dimming increment is: ΔR = abs(100-50) × 0.5 = 25, then the target dimming component R' is: R' = 50 + 25 = 75; the B dimming increment is: ΔB = abs(100-20) × 0.5 = 40, then the target dimming component B' is: B' = 20 + 40 = 60; the target dimming component G' = 100. Thus, the target dimming data of the light-emitting unit L22 is [75, 100, 60]. Compared with the initial dimming data, the difference between each target dimming component in this target dimming data is significantly smaller. This will make the light emitted by the light-emitting unit L22 according to the target dimming data approximately white, thereby avoiding the color backlight of the target light-emitting unit from causing color mixing in adjacent areas and improving the image display effect.

[0112] Reference Figure 4 and Figure 6 ,Depend on Figure 6As shown in (c), when the first gain coefficient Gain1 corresponding to the light-emitting unit L22 determined by the display chip 21 is 1, the dimming increment of R is: ΔR = abs(100-50) × 1 = 50, then the target dimming component R' is: R' = 50 + 50 = 100; the dimming increment of B is: ΔB = abs(100-20) × 1 = 80, then the target dimming component B' is: B' = 20 + 80 = 100; the target dimming component G' = 100. Thus, the target dimming data of the light-emitting unit L22 is [100, 100, 100]. The values ​​of each target dimming component in this target dimming data are equal, which will make the light emitted by the light-emitting unit L22 according to the target dimming data white light, thereby reducing or even eliminating the color halo phenomenon.

[0113] In summary, by using the first gain coefficient, the non-maximum initial dimming component among the multiple initial dimming components of the initial dimming data is increased to reduce the difference between the multiple initial dimming components. This ensures that when the light-emitting unit emits light according to the target dimming data, its emitted color approaches white, or even appears white. This minimizes color crosstalk caused by the target light-emitting unit's emitted color to its surrounding areas, avoids color mixing caused by the light-emitting unit's colored backlight in adjacent areas, prevents the displayed image from displaying unexpected colors, ensures color accuracy of the displayed image, and makes the user's visual experience more comfortable.

[0114] Taking the target light-emitting unit emitting red light as an example, refer to Figure 3 and Figure 7 When the target light-emitting unit 232-B1 located in the left half of region D1 performs backlight control according to the initial dimming data, the red backlight emitted by it will diffuse into the right half of region D2. This causes color mixing in a part of the right half of region D2 near the boundary line C1, meaning that the part of the right half of region D2 near the boundary line C1 no longer appears white, but red. This color crosstalk is easily noticeable to the naked eye, therefore, it will cause great visual discomfort to the user when viewing the displayed image.

[0115] Reference Figure 3 and Figure 7 When the target light-emitting unit 232-B1 located in the left half-area D1 performs backlight control according to the target dimming data, the backlight emitted by it is white light or near-white light. Therefore, the red backlight emitted by the left half-area D1 will be stopped at the dividing line C1 and will not spread to the right half-area D2, thus preventing the right half-area D2 from having a color mixing phenomenon, thereby making the color of the displayed image more accurate.

[0116] However, while adjusting the emission color of the target light-emitting unit to white or near-white light in the above embodiments improves the color halo phenomenon and enhances the color accuracy of the displayed image, it also reduces the brightness of the backlight area to which the target light-emitting unit belongs, thereby reducing the color saturation of the displayed image. Based on this, the embodiments of this application also incorporate the following design:

[0117] Reference Figure 8 The display chip 21 may also include the following operations:

[0118] Step S801: Based on the target backlight area in the backlight unit, determine the target pixel area in the display panel, wherein the target backlight area is the area where the target light-emitting unit is located.

[0119] Step S802: Based on the second gain coefficient, increase the initial pixel data corresponding to the target pixel region to obtain target pixel data, so as to drive the target pixel region to display the image according to the target pixel data, wherein the second gain coefficient is ≥1.

[0120] In some embodiments, the display chip 21 may use the product of the second gain coefficient and the initial pixel data of the target pixel region as the target pixel data. Specifically, the target pixel data may be expressed as: [R_data', G_data', B_data'] = [R_data, G_data, B_data] × Gain2; where [R_data', G_data', B_data'] are the target pixel data, [R_data, G_data, B_data] are the initial pixel data, and Gain2 is the second gain coefficient.

[0121] Furthermore, in this embodiment, the second gain coefficient is pre-stored in the storage unit (such as Flash) of the display device. This second gain coefficient can be determined by analyzing the actual measurement results of the display device. For example, using an image acquisition device (such as a camera), the display images on the display panel are acquired when the light-emitting unit is controlled with initial dimming data and when the light-emitting unit is controlled with target dimming data. By analyzing at least two acquired images, the corresponding second gain coefficient for that situation is determined. Therefore, by using this second gain coefficient to compensate and adjust the pixel data, the color saturation and brightness of the image can be improved, further optimizing the image display effect.

[0122] Of course, it should be understood that the above method for determining the second gain coefficient is merely an example and should not impose any limitations on this application. In practical applications, other feasible methods can also be used to determine the second gain coefficient.

[0123] Reference Figure 3 and Figure 9In the left half region D1, the actual emission color and actual emission brightness of the target emission unit 232-B1 are determined according to the target dimming data, while the actual emission color and actual emission brightness of the non-target emission units (such as emission unit 232-B) are determined according to the initial dimming data. This can prevent the red light generated in the left half region D1 from spreading to the right half region D2.

[0124] In addition, refer to Figure 9 The pixel areas on the display panel corresponding to non-target light-emitting units are directly displayed based on the initial pixel data (i.e., the second gain value Gain2 = 1, and the initial pixel data remains unchanged). However, the pixel areas corresponding to the target light-emitting unit 232-B1 are displayed based on target pixel data, which is obtained by processing the initial pixel data using a second gain value Gain2 greater than 1. Therefore, the actual luminous brightness of the target light-emitting unit 232-B1 is higher than its theoretical luminous brightness to compensate for the loss of color saturation. As a result, in the final displayed image, red is only distributed in the left half (D1) and white is only distributed in the right half (D2), thus achieving high color accuracy and high color saturation in image display.

[0125] Therefore, by increasing the pixel data of the target pixel area corresponding to the area where the target light-emitting unit is located, the actual light-emitting brightness of the target pixel area is increased. This can compensate for the loss of color brightness caused by adjusting the color backlight of the target light-emitting unit to an approximate white backlight, increase the color saturation of the displayed image, and improve display performance.

[0126] Reference Figure 10 In an example of a complete display control method, the method may include:

[0127] In step S1001, the display chip 21 generates initial dimming data based on the initial pixel data.

[0128] In step S1002, the display chip 21 determines the dimming data difference corresponding to each light-emitting unit based on the initial dimming data corresponding to each light-emitting unit and the initial dimming data corresponding to each of the multiple light-emitting units located around the light-emitting unit.

[0129] In step S1003, the display chip 21 selects a target light-emitting unit from the multiple light-emitting units of the backlight unit 23 based on a preset threshold and the dimming data difference corresponding to each of the multiple light-emitting units.

[0130] In step S1004, the display chip 21 normalizes the dimming data difference corresponding to the target light-emitting unit to obtain the first gain coefficient corresponding to the target light-emitting unit.

[0131] In step S1005, the display chip 21 adjusts the initial dimming data corresponding to the target light-emitting unit according to the first gain coefficient to obtain the target dimming data.

[0132] In step S1006, the display chip 21 sends the target dimming data to the target light-emitting unit and the initial dimming data to the other light-emitting units in the backlight unit;

[0133] In step S1007, the display chip 21 increases the initial pixel data corresponding to the target pixel region based on the second gain coefficient to obtain the target pixel data.

[0134] In step S1008, the display chip 21 sends the target pixel data to the target pixel area and sends the initial pixel data to other pixel areas.

[0135] Step S1009: Display the image.

[0136] Based on the same concept, this application embodiment also provides a display chip. Since the display chip is the same display chip in the display control method of this application embodiment, and the principle of the display chip in solving the problem is similar to that of the display control method, the implementation of the display chip can refer to the implementation of the display control method, and the repeated parts will not be described again.

[0137] Reference Figure 11 The display chip 21 may include a data generation module 211, a boundary detection module 212, a dimming data processing module 213, and a pixel data processing module 214; wherein:

[0138] The data generation module 211 is connected to the boundary detection module 212 and is used to generate initial dimming data based on the initial pixel data; and send the initial dimming data to the boundary detection module 212.

[0139] The boundary detection module 212 is connected to the dimming data processing module 213 and the pixel data processing module 214 respectively, and is used to determine the target light-emitting unit based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit. Here, a light-emitting unit includes multiple light-emitting sub-units, and the initial dimming data corresponding to a light-emitting unit includes the initial dimming components corresponding to each of the multiple light-emitting sub-units.

[0140] The dimming data processing module 213 is used to adjust the initial dimming data corresponding to the target light-emitting unit to obtain the target dimming data, and control the emission color of the target light-emitting unit according to the target dimming data. The difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data.

[0141] The pixel data processing module 214 is used to receive the initial pixel data sent by the previous stage; determine the target pixel area in the display panel based on the target backlight area in the backlight unit; increase the initial pixel data corresponding to the target pixel area based on the second gain coefficient to obtain the target pixel data, and output the target pixel data to the display panel so as to drive the target pixel area to display the image according to the target pixel data, wherein the target backlight area is the area where the target light-emitting unit is located, and the second gain coefficient is greater than or equal to 1.

[0142] In some embodiments, the dimming data processing module 213 is specifically used for:

[0143] Based on multiple initial dimming data and the initial dimming data corresponding to the target light-emitting unit, the first gain coefficient corresponding to the target light-emitting unit is determined;

[0144] Based on the first gain coefficient, the initial dimming data corresponding to the target light-emitting unit is adjusted to obtain the target dimming data;

[0145] Among them, the multiple first initial dimming data are the initial dimming data corresponding to the multiple first light-emitting units, and the multiple first light-emitting units are multiple light-emitting units located around the target light-emitting unit in the backlight unit.

[0146] In some embodiments, the plurality of first light-emitting units include at least one or more light-emitting units adjacent to the target light-emitting unit, and the data of the first light-emitting units is determined according to a preset quantity threshold;

[0147] The target light-emitting unit emits a different color than the light-emitting units located adjacent to it.

[0148] In some embodiments, the dimming data processing module 213 is specifically used for:

[0149] Among the multiple initial dimming components included in the initial dimming data corresponding to the target light-emitting unit, a first initial dimming component and multiple second initial dimming components are determined, wherein the first initial dimming component is the maximum value among the multiple initial dimming components, and the second initial dimming component is the other initial dimming component among the multiple initial dimming components besides the first initial dimming component.

[0150] For any second initial dimming component, the second initial dimming component is increased according to the first initial dimming component and the first gain coefficient to obtain a target dimming component in the target dimming data;

[0151] Furthermore, the first initial dimming component is used as a target dimming component in the target dimming data.

[0152] In some embodiments, the dimming data processing module 213 is specifically used for:

[0153] The dimming increment is obtained by multiplying the absolute value of the difference between the first initial dimming component and the second initial dimming component with the first gain coefficient.

[0154] The sum of the second initial dimming component and the dimming increment is taken as the target dimming component.

[0155] In some embodiments, the dimming data processing module 213 is specifically used for:

[0156] Determine the dimming data difference corresponding to the target light-emitting unit, wherein the dimming data difference is used to characterize the degree of color difference between the target light-emitting unit and multiple first light-emitting units, and the dimming data difference corresponding to the target light-emitting unit meets a preset threshold.

[0157] Based on multiple initial dimming data and the initial dimming data corresponding to the target light-emitting unit, the difference in dimming data is normalized to obtain a first gain coefficient, wherein the first gain coefficient is greater than or equal to 0 and less than or equal to 1.

[0158] In some embodiments, the dimming data processing module 213 is specifically used for:

[0159] Among the multiple initial dimming components included in the initial dimming data corresponding to the target light-emitting unit, and the multiple initial dimming components included in each of the multiple first initial dimming data, the maximum initial dimming component is determined.

[0160] The maximum initial dimming value is determined based on the maximum initial dimming component and the total number of light-emitting sub-units included in the multiple first light-emitting units;

[0161] The first gain coefficient is obtained by calculating the ratio of the dimming data difference to the maximum initial dimming value.

[0162] In some embodiments, the boundary detection module 212 is specifically used for:

[0163] For any light-emitting unit in the backlight unit, the dimming data difference corresponding to the light-emitting unit is determined based on the initial dimming data corresponding to the light-emitting unit and the initial dimming data corresponding to the multiple light-emitting units surrounding the light-emitting unit.

[0164] Based on the dimming data differences corresponding to multiple light-emitting units, the target light-emitting unit is selected from among the multiple light-emitting units;

[0165] The number of multiple light-emitting units surrounding the light-emitting unit is determined according to a preset number threshold, and the dimming data difference is used to characterize the degree of color difference between the light-emitting unit and the multiple light-emitting units around it.

[0166] In some embodiments, the boundary detection module 212 is specifically used for:

[0167] The absolute values ​​of the differences between the fourth initial dimming component and the multiple fifth initial dimming components are calculated respectively to obtain multiple component differences. The fourth initial dimming component is any one of the initial dimming components in the initial dimming data corresponding to the light-emitting unit. The multiple fifth initial dimming components are each one of the initial dimming components corresponding to the fourth initial dimming component in the initial dimming data of the multiple light-emitting units surrounding the light-emitting unit.

[0168] The sum of the differences between multiple components is calculated to obtain the dimming data difference corresponding to the light-emitting unit.

[0169] In some embodiments, the boundary detection module 212 is specifically used for:

[0170] Among the dimming data differences corresponding to each of the multiple light-emitting units, the dimming data difference that is greater than or equal to a preset threshold is selected as the target dimming data difference;

[0171] The light-emitting unit corresponding to the difference in target dimming data is used as the target light-emitting unit.

[0172] Based on the same concept, this application also provides a display device. Since the principle of the display device in solving the problem is similar to that of the aforementioned display chip, the implementation of the display device can refer to the implementation of the aforementioned display chip, and the repeated parts will not be described again.

[0173] Reference Figure 2 In the display device 2 provided in this application embodiment, the display panel 22 is used to receive the initial pixel data sent by the display chip 21 and display the image according to the initial pixel data.

[0174] In some embodiments, please continue to refer to Figure 2 The display panel 22 is also used for: receiving target pixel data sent by the display chip 21, driving the target pixel area to display an image according to the target pixel data, and driving other pixel areas in the display panel 22 other than the target pixel area to display an image according to the initial pixel data; the target pixel data is determined by the display chip 21 based on the second gain coefficient and the initial pixel data corresponding to the target pixel area, the target pixel area is the area on the display panel 22 corresponding to the target backlight area of ​​the backlight unit 23, and the target backlight area is the area where the target light-emitting unit is located.

[0175] In specific implementations, the display device in the embodiments of this application can be a smart terminal, a smart mobile terminal, a tablet computer, a laptop computer, a smart handheld device, a personal computer (PC), a computer, an in-vehicle device, various wearable devices, etc. Furthermore, other essential components of this display device are those that should be understood by those skilled in the art, and will not be described in detail here, nor should they be construed as limitations on this application.

[0176] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0177] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display control method, characterized in that, include: Based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit, the target light-emitting unit is determined. Here, a light-emitting unit includes multiple light-emitting sub-units, and an initial dimming data includes multiple initial dimming components. The multiple initial dimming components correspond one-to-one with the multiple light-emitting sub-units. Based on the degree of color difference between the target light-emitting unit and the surrounding light-emitting units, a first gain coefficient is determined. According to the first gain coefficient, the initial dimming data corresponding to the target light-emitting unit is adjusted to obtain target dimming data. The emission color of the target light-emitting unit is controlled according to the target dimming data. The difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data. The step of determining the target light-emitting unit based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit includes: For any light-emitting unit in the backlight unit, based on the initial dimming data corresponding to the light-emitting unit and the initial dimming data corresponding to each of the multiple light-emitting units surrounding the light-emitting unit, a dimming data difference value corresponding to the light-emitting unit is determined. The dimming data difference value is used to characterize the degree of color difference between the light-emitting unit and the multiple light-emitting units surrounding it. The light-emitting unit whose dimming data difference is greater than or equal to a preset threshold among the dimming data differences of the plurality of light-emitting units is taken as the target light-emitting unit.

2. The method as described in claim 1, characterized in that, Determining the first gain coefficient based on the degree of color difference between the target light-emitting unit and the surrounding light-emitting units includes: Based on multiple first initial dimming data and the initial dimming data corresponding to the target light-emitting unit, the first gain coefficient corresponding to the target light-emitting unit is determined; Wherein, the plurality of first initial dimming data are the initial dimming data corresponding to each of the plurality of first light-emitting units, and the plurality of first light-emitting units are the plurality of light-emitting units disposed around the target light-emitting unit in the backlight unit.

3. The method as described in claim 2, characterized in that, The plurality of first light-emitting units include at least one or more light-emitting units adjacent to the target light-emitting unit, and the data of the first light-emitting units is determined according to a preset quantity threshold; The target light-emitting unit emits a different color than the light-emitting units adjacent to it.

4. The method as described in claim 1, characterized in that, The step of adjusting the initial dimming data corresponding to the target light-emitting unit according to the first gain coefficient to obtain the target dimming data includes: Among the multiple initial dimming components included in the initial dimming data corresponding to the target light-emitting unit, a first initial dimming component and multiple second initial dimming components are determined, wherein the first initial dimming component is the maximum value among the multiple initial dimming components, and the second initial dimming component is the other initial dimming component among the multiple initial dimming components besides the first initial dimming component. For any second initial dimming component, the second initial dimming component is increased according to the first initial dimming component and the first gain coefficient to obtain a target dimming component in the target dimming data; Furthermore, the first initial dimming component is used as a target dimming component in the target dimming data.

5. The method as described in claim 4, characterized in that, The step of increasing the second initial dimming component based on the first initial dimming component and the first gain coefficient to obtain a target dimming component in the target dimming data includes: Calculate the absolute value of the difference between the first initial dimming component and the second initial dimming component, and determine the dimming increment based on the product of the obtained absolute value and the first gain coefficient; The sum of the second initial dimming component and the dimming increment is taken as a target dimming component in the target dimming data.

6. The method as described in claim 2, characterized in that, The step of determining the first gain coefficient corresponding to the target light-emitting unit based on multiple first initial dimming data and the initial dimming data corresponding to the target light-emitting unit includes: Determine the dimming data difference value corresponding to the target light-emitting unit, wherein the dimming data difference value is used to characterize the degree of color difference between the target light-emitting unit and the plurality of first light-emitting units, and the dimming data difference value corresponding to the target light-emitting unit satisfies a preset threshold. Based on multiple initial dimming data and the initial dimming data corresponding to the target light-emitting unit, the difference in the dimming data is normalized to obtain the first gain coefficient, wherein the first gain coefficient is greater than or equal to 0 and less than or equal to 1.

7. The method as described in claim 6, characterized in that, The step of normalizing the difference in the dimming data based on multiple first initial dimming data and the initial dimming data corresponding to the target light-emitting unit to obtain the first gain coefficient includes: Among the multiple initial dimming components included in the initial dimming data corresponding to the target light-emitting unit, and the multiple initial dimming components included in each of the multiple first initial dimming data, the largest initial dimming component is determined. The maximum initial dimming value is determined based on the maximum initial dimming component and the total number of light-emitting sub-units included in the plurality of first light-emitting units; The first gain coefficient is obtained by calculating the ratio of the dimming data difference to the maximum initial dimming value.

8. The method as described in claim 1, characterized in that, Also includes: Based on the target backlight area in the backlight unit, a target pixel area is determined in the display panel, wherein the target backlight area is the area where the target light-emitting unit is located; Based on the second gain coefficient, the initial pixel data corresponding to the target pixel region is increased to obtain target pixel data, so as to drive the target pixel region to display an image according to the target pixel data, wherein the second gain coefficient is greater than or equal to 1.

9. The method according to any one of claims 1-8, characterized in that, The step of determining the dimming data difference corresponding to the light-emitting unit based on the initial dimming data corresponding to the light-emitting unit and the initial dimming data corresponding to each of the plurality of light-emitting units disposed around the light-emitting unit includes: The absolute values ​​of the differences between the fourth initial dimming component and the plurality of fifth initial dimming components are calculated respectively to obtain the plurality of component differences. The fourth initial dimming component is any one of the initial dimming components in the initial dimming data corresponding to the light-emitting unit. The plurality of fifth initial dimming components are each one of the initial dimming components corresponding to the fourth initial dimming component in the initial dimming data of the plurality of light-emitting units located around the light-emitting unit. The sum of the differences among the multiple components is calculated to obtain the dimming data difference corresponding to the light-emitting unit.

10. A display chip, characterized in that, include: The boundary detection module is used to determine the target light-emitting unit based on the initial dimming data corresponding to each of the multiple light-emitting units in the backlight unit. Here, a light-emitting unit includes multiple light-emitting sub-units, and the initial dimming data corresponding to a light-emitting unit includes the initial dimming components corresponding to each of the multiple light-emitting sub-units. A dimming data processing module is used to determine a first gain coefficient based on the degree of color difference between the target light-emitting unit and the surrounding light-emitting units, adjust the initial dimming data corresponding to the target light-emitting unit according to the first gain coefficient to obtain target dimming data, and control the emission color of the target light-emitting unit according to the target dimming data, wherein the difference between the multiple target dimming components included in the target dimming data is less than the difference between the multiple initial dimming components included in the initial dimming data. Specifically, the boundary detection module is used to: for any light-emitting unit, based on the initial dimming data corresponding to the light-emitting unit and the initial dimming data corresponding to each of the multiple light-emitting units surrounding the light-emitting unit, determine the dimming data difference corresponding to the light-emitting unit, wherein the dimming data difference is used to characterize the degree of color difference between the light-emitting unit and the multiple light-emitting units surrounding it; and select the light-emitting unit corresponding to the dimming data difference greater than or equal to a preset threshold from among the dimming data differences corresponding to the multiple light-emitting units as the target light-emitting unit.

11. A display device, characterized in that, Includes a display panel, a backlight module, and a display chip as described in claim 10, wherein: The display chip is electrically connected to the display panel and the backlight module respectively; the backlight module includes a backlight panel for carrying backlight units, the backlight units are provided with a plurality of light-emitting units, and the backlight panel is disposed opposite to the display panel; The display panel is used to: receive initial pixel data sent by the display chip, and display an image based on the initial pixel data.

12. The display device as claimed in claim 11, characterized in that, The display panel is also used for: The display panel receives target pixel data sent by the display chip, drives the target pixel area to display an image based on the target pixel data, and drives other pixel areas in the display panel, excluding the target pixel area, to display an image based on the initial pixel data. The target pixel data is determined by the display chip based on the second gain coefficient and the initial pixel data corresponding to the target pixel region. The target pixel region is the region on the display panel that corresponds to the target backlight region of the backlight unit, and the target backlight region is the region where the target light-emitting unit is located.

Images