Display device and control method

Abstract

The application discloses a display device and a control method. For any first pixel in a liquid crystal layer, the first pixel comprises two types of sub-pixels, i.e., a first sub-pixel and a second sub-pixel. In a first sub-field, a color image can be displayed by using the first sub-pixel, and in a second sub-field, a monochrome image can be displayed by using the second sub-pixel. In this way, the image intensity is concentrated in a single sub-field, the sensitivity of human body to color separation can be reduced, the color separation can be reduced, the display quality of the image can be improved, and since the area corresponding to the first sub-pixel is not covered by a filter layer or is covered by a transparent filter layer, the light output by a backlight module can be directly emitted, the light intensity loss can be reduced, the light transmittance of the panel can be improved, the power consumption of the display device can be reduced, and the balance between light efficiency and image quality is achieved.

Description

Technical Field

[0001] This application relates to the field of field sequence display, and more particularly to a display device and control method. Background Technology

[0002] Conventional LCD displays use the principle of spatial color mixing, automatically adding the three primary colors (RGB) in the human eye's visual perception to form a corresponding color image. However, because color filters absorb a large amount of light energy, their luminous efficiency is relatively low.

[0003] To overcome this deficiency, traditional field-sequential display technology employs a temporal color mixing principle. This involves dividing each image frame into three monochrome subframes (RGB), turning on a backlight for each color in each subframe, and then sequentially displaying the red, green, and blue monochrome image subframes. By utilizing the hysteresis effect of the human eye, the three monochrome subframes are temporally fused to obtain a color image. However, traditional field-sequential display technology suffers from severe color separation, degrading image quality.

[0004] Therefore, there is an urgent need for a display device that can achieve a balance between light efficiency and image quality. Summary of the Invention

[0005] This application provides a display device and control method that can achieve a balance between light efficiency and image quality.

[0006] In a first aspect, a display device is provided, comprising:

[0007] The backlight module is used to sequentially emit backlight corresponding to each of the multiple subfields, and the backlight corresponding to each subfield is different;

[0008] The LCD panel includes multiple pixels, at least one of which is a first pixel comprising N sub-pixels, where N is an integer greater than or equal to 2. The refresh rate of the LCD panel is the same as the refresh rate of the backlight module.

[0009] The light filter layer is located on the light-emitting side of the liquid crystal panel. The light filter layer includes N sub-regions, and each of the N sub-regions corresponds to one of the N sub-pixels. Among the N sub-pixels, the sub-regions corresponding to the M first sub-pixels do not have corresponding light filter layers or the light filter layer is transparent. Furthermore, the sub-regions corresponding to the NM second sub-pixels among the N sub-pixels are light filter regions, where M is an integer less than N.

[0010] In a second aspect, a control method is provided, applied to the display device described in the first aspect, the control method comprising:

[0011] Determine the target driving data for the pixels to be displayed in the image to be displayed;

[0012] Wherein, the pixel to be displayed is any pixel in the image to be displayed, the image to be displayed corresponds to at least two subfield images, the target driving data of the pixel to be displayed includes the target driving data corresponding to the at least two subfield images respectively, the at least two subfield images include a first subfield image and at least one second subfield image, the target driving data of the first subfield image includes first target backlight data and first target panel data, the first target backlight data is used to indicate the target backlight data corresponding to the first color, the second color, and the third color respectively, the first target panel data is used to indicate the target panel transmittance corresponding to the first target backlight data, the target driving data of the second subfield image includes second target backlight data and second target panel data, the second target backlight data is used to indicate the target backlight data corresponding to the second color and / or the third color, the second target panel data is used to indicate the target panel transmittance corresponding to the second target backlight data;

[0013] At the first moment, the transmittance of the target pixel is controlled according to the first target panel data, and the backlight module in the display device is driven according to the first target backlight data to obtain the first subfield image, where the target pixel is any one of the multiple pixels.

[0014] At the second moment, the transmittance of the target pixel is controlled according to the second target panel data, and the backlight module in the display device is driven according to the second target backlight data to obtain the second subfield image.

[0015] Thirdly, a display device is provided, comprising: a panel driving module and a display panel, wherein:

[0016] The panel driver module is configured to drive the display panel to sequentially display at least two subfield images corresponding to the image to be displayed, wherein the first subfield image among the at least two subfield images is a color image;

[0017] Wherein, the sum of the image luminance components of the first color corresponding to each of the at least two subfield images is equal to the image luminance of the first color corresponding to the image to be displayed, and the image luminance component of the first color in the first subfield image is greater than the image luminance component of the first color corresponding to any other subfield.

[0018] The sum of the luminance components of the second color corresponding to each of the at least two subfield images is equal to the luminance of the second color corresponding to the image to be displayed, and the luminance component of the second color corresponding to the first subfield image is greater than the luminance component of the second color corresponding to any other subfield.

[0019] The sum of the luminance components of the third color corresponding to each of the at least two subfield images is equal to the luminance of the third color corresponding to the image to be displayed, and the luminance component of the third color corresponding to the first subfield image is greater than the luminance component of the third color corresponding to any other subfield.

[0020] Fourthly, a computer-readable storage medium is provided, which stores a computer program that, when executed by a display device, causes the display device to perform the control method of the second aspect.

[0021] Fifthly, a computer program product is provided, comprising: a computer program that, when run by a display device, causes the display device to execute the control method of the second aspect.

[0022] This application provides a display device and control method. For any first pixel in a liquid crystal layer, the first pixel includes two types of sub-pixels: a first sub-pixel and a second sub-pixel. The area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent. The light-emitting side of the area corresponding to the second sub-pixel is covered by a filter layer. That is, the first sub-pixel can output colored light (i.e., backlight color), and the second sub-pixel outputs light of a single color. Therefore, in a first aspect, during field-sequence display, a color image can be displayed using the first sub-pixel in the first sub-field, and a monochrome image can be displayed using the second sub-pixel in the second sub-field. This concentrates more image intensity components in a single sub-field, reducing human sensitivity to color separation, thereby reducing color separation and improving image display quality. Secondly, when displaying the first sub-field image, while utilizing the first sub-pixel to output more component colored light (such as RGB light), the second sub-pixel can output a portion of monochromatic light to supplement the image's detail information. This allows for the presentation of as much color information as possible in the first sub-field, further reducing the human body's sensitivity to color separation and improving the display effect. Alternatively, the number of sub-field splits required by the color separation suppression algorithm can be reduced by merging the monochromatic fields that supplement the image's detail information. Thirdly, since the area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent, the light output by the backlight module can be directly emitted, reducing light intensity loss, increasing the panel's transmittance, and thus reducing the display device's power consumption. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a conventional display module provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of a field sequence display module according to an embodiment of this application;

[0025] Figure 3 A schematic diagram illustrating the image to be displayed based on field sequence display provided in an embodiment of this application;

[0026] Figure 4A schematic diagram illustrating color separation in a typical RGB three-field display scenario during the field sequence implementation provided in this application embodiment;

[0027] Figure 5 This application provides a schematic diagram of the structure of a filter layer in a display device;

[0028] Figure 6A A schematic structural block diagram of a first pixel including two sub-pixels, provided for an embodiment of this application;

[0029] Figure 6B A schematic structural block diagram showing another first pixel including two sub-pixels, provided for an embodiment of this application;

[0030] Figure 6C A schematic structural block diagram illustrating another embodiment of the present application in which a first pixel includes two sub-pixels;

[0031] Figure 7A A schematic structural block diagram of a first pixel including three sub-pixels is provided for an embodiment of this application;

[0032] Figure 7B A schematic structural block diagram showing another first pixel including three sub-pixels, provided for an embodiment of this application;

[0033] Figure 7C A schematic structural block diagram illustrating another embodiment of the present application in which a first pixel includes three sub-pixels;

[0034] Figure 8A A schematic structural block diagram illustrating another embodiment of the present application in which a first pixel includes three sub-pixels;

[0035] Figure 8B A schematic structural block diagram showing another first pixel including three sub-pixels, provided for an embodiment of this application;

[0036] Figure 8C A schematic structural block diagram illustrating another embodiment of the present application in which a first pixel includes three sub-pixels;

[0037] Figure 9 This is a schematic diagram of a partial layout structure of a CF layer provided in an embodiment of this application;

[0038] Figure 10 A schematic flowchart illustrating the control method provided in an embodiment of this application;

[0039] Figure 11 This is a schematic diagram of the decomposition of a 180Hz Stencil-FSC image to be displayed, provided in an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0041] Hereinafter, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0042] Specific details, such as particular system architectures and techniques, are set forth for illustrative purposes and not for limitation, to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted to avoid unnecessary detail that could obscure the description of this application.

[0043] The following explains the relevant technologies and terms involved in this application.

[0044] like Figure 1 The diagram shown is a structural schematic of a conventional display module provided in an embodiment of this application, including:

[0045] Backlight module, including LED devices that display white light or multi-color light (such as red, green and blue primary colors);

[0046] Lower polarizing plate;

[0047] glass plate;

[0048] A thin-film transistor (TFT) array includes multiple pixel units corresponding to LED devices in a backlight module, each pixel unit consisting of multiple sub-pixels, for example... Figure 1 Each pixel unit includes three sub-pixels;

[0049] LCD panel;

[0050] The filter layer, also known as the CF (Color Filter) layer, includes a filter of the corresponding color that corresponds one-to-one with each sub-pixel in each pixel unit of the TFT array;

[0051] glass plate;

[0052] Put on the polarizing plate.

[0053] Adopting such Figure 1 The conventional LCD TV display module shown uses the principle of spatial color mixing, automatically adding the three primary colors (RGB) in human visual perception to form a corresponding color image, and this color image has relatively high image quality. However, because the color filter absorbs a large amount of light energy, the luminous efficacy is low.

[0054] like Figure 2 The diagram shown is a structural schematic of a field sequence display module according to an embodiment of this application, comprising:

[0055] Backlight module, including LED devices that display white light or multi-color light (such as red, green and blue primary colors);

[0056] Lower polarizing plate;

[0057] glass plate;

[0058] A thin-film transistor (TFT) array includes multiple pixel units corresponding to LED devices in a backlight module, each pixel unit consisting of multiple sub-pixels, for example... Figure 1 Each pixel unit includes three sub-pixels;

[0059] LCD panel;

[0060] glass plate;

[0061] Put on the polarizing plate.

[0062] It should be noted that, compared to, Figure 2 The diagram shown is a structural diagram of a conventional display module. The field sequence display module has the CF layer removed.

[0063] In field-sequence display, a frame of an image to be displayed is divided into multiple monochrome sub-field images according to color, for example, into sub-field images of three different colors: red, green, and blue. These sub-field images are displayed sequentially. Correspondingly, within a single field, the backlight module sequentially refreshes the backlight of the three primary colors: red, green, and blue. The LCD panel adjusts the backlight transmittance, displaying different colored sub-field images on the LCD panel at once. Utilizing the hysteresis effect of the human eye, multiple sub-field images are temporally fused, allowing them to be combined into the image to be displayed in the human eye. Figure 3 As shown, Figure 3 This is a schematic diagram illustrating the field-sequence-based display method for obtaining an image to be displayed, as provided in an embodiment of this application. Specifically, by sequentially displaying a red subfield image, a green subfield image, and a blue subfield image, the resulting image to be displayed is a color image.

[0064] Compared to conventional display modules, field-sequential display modules eliminate the CF layer, thus avoiding the CF layer's obstruction of light and improving the light transmittance of the display device. In some examples, the light transmittance of field-sequential display modules can be increased to about 3 to 4 times that of conventional display modules (e.g., from 5% to 15% to 20%), effectively reducing the power consumption of the display device.

[0065] However, in field-sequence displays, different backlight colors are displayed based on time sequence, allowing the display device to quickly and sequentially display subfield images of different color subfields, such as... Figure 4 The diagram illustrates color breakup in a typical RGB three-field display scenario, where each sub-field image has a different color, resulting in color differences between sub-fields. This causes the human eye to perceive color separation at the edges of the displayed image, a phenomenon known as color breakup. This color breakup degrades image quality and easily causes visual fatigue in viewers. Color breakup is essentially caused by color differences between fields. If each field displays the same color, color breakup will be completely suppressed. However, natural images are rich in color, and backlighting that displays the same color in each field will not be able to display natural images.

[0066] In view of this, embodiments of this application provide a display device and control method. For any first pixel in a liquid crystal layer, the first pixel includes two types of sub-pixels: a first sub-pixel and a second sub-pixel. The area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent. The light-emitting side of the area corresponding to the second sub-pixel is covered by a filter layer. That is, the first sub-pixel can output colored light (i.e., backlight color), and the second sub-pixel outputs light of a single color. Therefore, in a first aspect, during field-sequence display, a colored image can be displayed using the first sub-pixel in the first sub-field, and a monochrome image can be displayed using the second sub-pixel in the second sub-field. This concentrates more image intensity components in a single sub-field, reducing human sensitivity to color separation and thus improving image display quality. In a second aspect, when displaying an image in the first sub-field, while the first sub-pixel outputs backlight colored light (such as RGB light), a portion of monochrome light can be output using the second sub-pixel to supplement image detail information. This presents as much color information as possible in the first sub-field, further reducing human sensitivity to color separation and improving display effect. Thirdly, since the area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent, the light output by the backlight module can be emitted directly, reducing light intensity loss, increasing the panel's transmittance, and thus reducing the power consumption of the display device. Alternatively, the number of sub-fields required by the color separation suppression algorithm can be reduced by merging monochrome fields that supplement the image's detail information.

[0067] To facilitate a further understanding of the technical solutions in some embodiments of this application, the technical solutions of the display device and control method, and how these solutions solve the aforementioned technical problems, are described in detail below with reference to specific embodiments and accompanying drawings. The embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application.

[0068] The display device provided in the embodiments of this application will now be described.

[0069] The display device provided in this application includes:

[0070] The backlight module is used to sequentially emit backlight corresponding to each of the multiple subfields, and the backlight corresponding to each subfield is different.

[0071] In some embodiments, the backlight corresponding to the first subfield includes at least two wavelengths of backlight. Preferably, the backlight corresponding to the first subfield includes three wavelengths of backlight, namely: red backlight, green backlight, and blue backlight. The backlights corresponding to the second and third subfields each include one wavelength of backlight, and the backlights corresponding to the second and third subfields are different.

[0072] A liquid crystal panel includes multiple pixels, and at least one first pixel among the multiple pixels includes N sub-pixels, where N is an integer greater than or equal to 2.

[0073] In some embodiments, the refresh rate of the liquid crystal panel is the same as the refresh rate of the backlight module.

[0074] In some embodiments, by controlling the opening, closing, or different opening degrees of each sub-pixel in the liquid crystal panel, the intensity of light transmitted through each sub-pixel is adjusted, thereby mixing various colors. For example, if the first pixel contains three sub-pixels, namely a red sub-pixel, a green sub-pixel, and a blue sub-pixel, when the red sub-pixel is fully open and the green and blue sub-pixels are fully closed, the first pixel will display as red; when the three sub-pixels are open at different intensities, other colors such as orange, yellow, and purple can be mixed.

[0075] A light filter layer is located on the light-emitting side of the liquid crystal panel. The light filter layer includes N sub-regions, each of which corresponds to one of the N sub-pixels. Among the N sub-pixels, the sub-regions corresponding to the M first sub-pixels do not have corresponding light filter layers or the light filter layer is transparent. Furthermore, the sub-regions corresponding to the NM second sub-pixels among the N sub-pixels are light filter regions, where M is an integer less than N.

[0076] For example, Figure 5The diagram shown is a schematic representation of the structure of a filter layer in a display device according to an embodiment of this application. Figure 5 In this embodiment, the three sub-pixels of the first pixel are located in the filter area corresponding to the filter layer, and one sub-pixel's filter area has no corresponding filter layer or the filter layer is transparent. It should be noted that, compared with the structural block diagram of the CF layer in a conventional TFT LCD display module, the filter layer in the display device provided in this application retains at least one color filter in the CF layer of a conventional TFT LCD display module. Figure 5 In this design, both R and B color filters are retained, and a white W represents a colorless filter. This is understandable. Figure 5 This is merely one structure of the filter layer provided in this application embodiment, and does not limit the structure of the filter layer in this application embodiment. The filter layer in this application embodiment can also be other structures. Specifically, the first pixel in the filter layer in this application embodiment can also be other structures.

[0077] Optionally, the number of first sub-pixels and second sub-pixels in the first pixel of the LCD panel can be the same or different.

[0078] The different compositions of sub-pixels in the first pixel are explained below:

[0079] The first pixel includes a first sub-pixel and a second sub-pixel, and the sub-region corresponding to the second sub-pixel is provided with a first color filter layer, a second color filter layer or a third color filter layer;

[0080] Alternatively, the first pixel includes a first sub-pixel and two second sub-pixels, and each sub-region corresponding to the second sub-pixel is provided with a first color filter layer, a second color filter layer or a third color filter layer, and the color of the filter layer provided in the sub-region corresponding to each second sub-pixel is different;

[0081] Alternatively, the first pixel may include two first sub-pixels and one second sub-pixel, and the sub-region corresponding to the second sub-pixel may be provided with a first color filter layer, a second color filter layer, or a third color filter layer.

[0082] For example, if the W sub-pixel is the first sub-pixel, the sub-region of the filter layer corresponding to the W sub-pixel is set to transparent or the W sub-pixel has no corresponding filter layer, the sub-region of the filter layer corresponding to the R sub-pixel is set with a red filter layer, the sub-region of the filter layer corresponding to the G sub-pixel is set with a green filter layer, and the sub-region of the filter layer corresponding to the B sub-pixel is set with a blue filter layer.

[0083] If N is 2, then the first pixel includes two sub-pixels, a first sub-pixel and a second sub-pixel. The first pixel can be a pixel with any of the following structures: WR, WG, or WB. Figure 6A The diagram shown is a schematic structural block diagram of a first pixel comprising two sub-pixels, according to an embodiment of this application. Figure 6B The diagram shown is a schematic structural block diagram of another first pixel including two sub-pixels according to an embodiment of this application. Figure 6C The diagram shown is a schematic structural block diagram of another first pixel including two sub-pixels according to an embodiment of this application.

[0084] If N is 3, then the first pixel includes three sub-pixels, which can be two first sub-pixels and one second sub-pixel. For example, the first pixel can be a pixel with any of the following structures: WRW, WGW, or WBW. Figure 7A The diagram shown is a schematic structural block diagram of a first pixel comprising three sub-pixels, according to an embodiment of this application. Figure 7B The diagram shown is a schematic structural block diagram of another first pixel including three sub-pixels according to an embodiment of this application. Figure 7C The diagram shown is a schematic structural block diagram of another first pixel including three sub-pixels according to an embodiment of this application.

[0085] If N is 3, then the first pixel includes three sub-pixels, which can be one first sub-pixel and two second sub-pixels. The sub-region corresponding to each second sub-pixel has a different color filter layer. For example, the first pixel can be a pixel with any of the following structures: WRB, WGB, or WRG. Figure 8A The diagram shown is a schematic structural block diagram of a first pixel comprising three sub-pixels, according to an embodiment of this application. Figure 8B The diagram shown is a schematic structural block diagram of another first pixel including three sub-pixels according to an embodiment of this application. Figure 8C The diagram shown is a schematic structural block diagram of another first pixel including three sub-pixels according to an embodiment of this application.

[0086] It is understandable that the composition of the sub-pixels in the first pixel is different, and the same sub-pixels are arranged in different ways, so the resulting first pixel can also be considered different. As an example rather than a limitation, the arrangement of sub-pixels includes: standard RGB arrangement.

[0087] It should be noted that in the embodiments of this application, the different colors of the sub-pixels are used to illustrate that the sub-pixels correspond to different colors or types of filters in the filter layer, but the sub-pixels are not different in the liquid crystal panel.

[0088] Optionally, the CF layer can be composed of the same structure or different structures. The following section introduces CF layers composed of different structures.

[0089] Considering that color separation mainly occurs at edges and in images with a large color gamut, for image partitions with significant color separation, a method is adopted to merge two pixels into one pixel, disable the W subpixel, and use traditional spatial color mixing to achieve imaging. Although this solution reduces image resolution, it completely eliminates the color separation problem and can improve the overall image experience for users through image enhancement algorithms.

[0090] In one possible implementation, the first pixel includes a first sub-pixel and two second sub-pixels. Each sub-region corresponding to the second sub-pixel is provided with a first color filter layer, a second color filter layer, or a third color filter layer, and the color of the filter layer provided in the sub-region corresponding to each second sub-pixel is different.

[0091] The multiple pixels also include a second pixel, which includes two third sub-pixels and one fourth sub-pixel. The sub-region corresponding to the third sub-pixel has no corresponding filter layer or the filter layer is transparent. The color of the filter layer set for the sub-region corresponding to the fourth sub-pixel is different from the color of the filter layer set for the sub-region corresponding to the two second sub-pixels.

[0092] The first and second pixels are arranged alternately in both the horizontal and vertical directions.

[0093] like Figure 9 The diagram shows a partial layout structure of the CF layer, where RWB is the first pixel and WGW is the second pixel.

[0094] For including, Figure 9 The display device with the CF layer structure shown, in field-sequence mode (120Hz input, 360Hz output for three fields): RGB subpixels are disabled, and the display is driven directly according to field-sequence mode (such as the 180Hz Stencil-FSC method). Specifically, the transmittance of the two W subpixels is set to half the transmittance of the one W subpixel. This mode is very suitable for energy-saving applications.

[0095] Optionally, the display device provided in this application embodiment further includes an image processing unit for driving the display device to perform field-sequence display of the image to be displayed.

[0096] In one possible implementation, at least one first pixel includes a target pixel, and the image processing unit provided in this embodiment is configured to perform as follows: Figure 10 The steps in the illustrative flow diagram of the control method shown are as follows:

[0097] S1001, Determine the target driving data of the pixels to be displayed in the image to be displayed.

[0098] Wherein, the pixel to be displayed is any pixel in the image to be displayed, the image to be displayed corresponds to at least two subfield images, the target driving data of the pixel to be displayed includes the target driving data corresponding to the at least two subfield images respectively, the at least two subfield images include a first subfield image and at least one second subfield image, the target driving data of the first subfield image includes first target backlight data and first target panel data, the first target backlight data is used to indicate the target backlight data corresponding to the first color, the second color, and the third color respectively, the first target panel data is used to indicate the target panel transmittance corresponding to the first target backlight data, the target driving data of the second subfield image includes second target backlight data and second target panel data, the second target backlight data is used to indicate the target backlight data corresponding to the second color and / or the third color, the second target panel data is used to indicate the target panel transmittance corresponding to the second target backlight data.

[0099] In some embodiments, the image to be displayed can be divided into two subfield images, three subfield images, or four subfield images.

[0100] For example, based on the image features of the image to be displayed and a preset driving algorithm, the image to be displayed can be divided into several sub-field images for display. Preset driving algorithms include: Stencil method, Edge Stencil method, Stencil-FSC method, LPD method, Stencil-LPD method, RGB method, and / or GPDK method, etc. Different preset driving algorithms may vary slightly at different refresh rates; for example, the Stencil method can be further subdivided into: 180Hz-Stencil method, 240Hz-Stencil method, etc.

[0101] Reference Figure 11 This application also provides a schematic diagram of 180Hz Stencil-FSC image decomposition, which further illustrates the calculation methods for the backlight size and liquid crystal panel transmittance corresponding to each sub-field image. The specific calculation flow of the 180Hz Stencil-FSC algorithm is as follows:

[0102] (1) For the backlight zones of the image to be displayed, local dimming technology is used. In terms of dimming algorithm, the averaging method is used for red and blue backlights, and the root mean square method is used for green backlights. This is because the green field should be displayed more prominently in the first field, while reducing the green field transmittance T. G This will facilitate subsequent compensation.

[0103] (2) After backlight simulation, the first backlight is the superposition of the red, green and blue channels, and the second and third backlights are the red and blue channels respectively.

[0104] (3) Compensation for liquid crystal transmittance, where the first field transmittance is equal to the green field transmittance T. G The transmittance compensation for the second and third games is T. R -T G T B -T G .

[0105] (4) Combine the backlight signal and liquid crystal signal of the corresponding field to generate a three-field screen image.

[0106] The 180Hz Stencil-FSC method has good color separation suppression capabilities for most images; however, it lags behind other algorithms in terms of color distortion.

[0107] The following will explain S1001 by dividing the image to be displayed into two subfield images and three subfield images respectively.

[0108] (1) For the case where the image to be displayed is divided into three sub-field images (including the first sub-field image and two second sub-field images), S1001 is explained as follows:

[0109] In the case where the first pixel includes a first sub-pixel and two second sub-pixels, and the two second sub-pixels include a fifth sub-pixel and a sixth sub-pixel, the first target backlight data includes first backlight sub-data, second backlight sub-data, and third backlight sub-data, and the first target panel data includes first panel sub-data, second panel data, and third panel data; the two second subfield images include a third subfield image and a fourth subfield image, the second target backlight data includes fourth backlight sub-data and fifth backlight sub-data, and the second target panel data includes fourth panel data and fifth panel data.

[0110] The image processing unit executes S1001, and is configured to:

[0111] S1001A1, based on the pixel information of the pixels to be displayed, determines the initial backlight data and initial transmittance data corresponding to the image to be displayed in a traditional field sequence display. The initial backlight data includes initial backlight data for a first color, initial backlight data for a second color, and initial backlight data for a third color; the initial transmittance data includes initial transmittance data for a first color, initial transmittance data for a second color, and initial transmittance data for a third color.

[0112] Prior to S1001A1, the image processing unit was also configured to acquire pixel information of the pixels to be displayed. This pixel information included the pixel's color value (such as RGB values) and the pixel's brightness information.

[0113] In some embodiments, after obtaining the pixel information of the pixels to be displayed, the initial backlight data and initial transmittance data corresponding to the image to be displayed in a conventional field-sequence display can be determined based on the pixel information of the pixels to be displayed. For example, in a conventional field-sequence display, the first sub-screen image is a red image, and the red backlight BL corresponding to this red image... R The second sub-image is determined to be a green image based on the average value of the red pixel signals in the pixels to be displayed in the image to be displayed. This green image corresponds to the green backlight BL. G The third sub-image is determined based on the root mean square of the average value of the green pixel signals in the pixels to be displayed in the image to be displayed. The blue image corresponds to the blue backlight BL. B The initial transmittance is determined based on the average value of the blue pixel signal among the pixels to be displayed in the image. The initial transmittance data is calculated based on the RGB values ​​of each sub-pixel in the image and the backlight. Specifically, T... R =I R / BL R ,T G =I G / BL G ,T B =I B / BL B , where I R I G I B These are the RGB values ​​of each sub-pixel; the initial RGB transmittance is calculated based on the condition without a CF film.

[0114] S1001A2, the initial backlight data of the first color is determined as the first backlight sub-data, and the first backlight sub-data is the backlight data corresponding to the first color in the first sub-field image;

[0115] Based on the initial backlight data of the second color and the first preset coefficient, the second backlight sub-data is determined. The second backlight sub-data is the backlight data corresponding to the second color in the first subfield image. The second backlight sub-data is less than the initial backlight data of the second color.

[0116] Based on the initial backlight data of the third color and the first preset coefficient, the third backlight sub-data is determined. The third backlight sub-data is the backlight data corresponding to the third color in the first subfield image. The third backlight sub-data is less than the initial backlight data of the third color.

[0117] Set the first panel sub-data as the initial transmittance data of the first color. The first panel sub-data is the transmittance data of the first sub-pixel in the first subfield image.

[0118] Based on the initial transmittance data of the first color, the initial transmittance data of the second color, and the first preset coefficient, the second panel sub-data is determined. The second panel sub-data is the transmittance data of the fifth sub-pixel in the first sub-field image.

[0119] Based on the initial transmittance data of the first color, the initial transmittance data of the third color, and the first preset coefficient, the third panel sub-data is determined. The third panel sub-data is the transmittance data of the sixth sub-pixel in the first sub-field image.

[0120] Set the fourth backlight sub-data as the second backlight sub-data, and the fourth backlight sub-data is the backlight data corresponding to the third subfield image;

[0121] Set the fifth backlight sub-data as the third backlight sub-data, and the fifth backlight sub-data is the backlight data corresponding to the fourth sub-field image;

[0122] Based on the initial transmittance data of the first color, the initial transmittance data of the second color, the second panel sub-data, and the first preset coefficient, the fourth panel sub-data is determined. The fourth panel sub-data is the transmittance data of the first sub-pixel in the third sub-field image.

[0123] Based on the initial transmittance data of the first color, the initial transmittance data of the third color, the data of the third panel, and the first preset coefficient, the data of the fifth panel is determined. The data of the fifth panel is the transmittance data of the first sub-pixel in the fourth sub-field image.

[0124] In some embodiments, considering that the human eye is most sensitive to green among the three colors of red, green, and blue, green information is used as the signal for the first subfield image. Simultaneously, after displaying as much of the color information (green, blue, and red) of the image to be displayed as possible in the first subfield, detailed information is supplemented in the second and third subfield images (the remaining R and B monochromatic fields). Since concentrating image intensity on a single subfield image (the first subfield image) reduces the human body's sensitivity to color separation, the 180Hz Stencil-FSC method redistributes some of the signals from the red and blue fields to the green field. Furthermore, color separation is reduced when the separated colors do not contain green information.

[0125] Based on the above analysis, the first color is green, so that in the embodiment of this application, the color information of the image to be displayed in the first subfield includes all the green information of the image to be displayed.

[0126] For example, the image to be displayed is divided into three subfield images (including: the first subfield image, the second subfield image, and the third subfield image), and the target driving data corresponding to the different subfields in the image to be displayed is determined.

[0127] In this embodiment, for the first subfield, the first subfield image includes all the green information, some red information, and some blue information of the image to be displayed, and its backlight is set to a superimposed three-color backlight of RGB three channels. Specifically, all the green information corresponds to the information of the second sub-screen image in the traditional field-sequence display method, the some red information corresponds to some information of the first sub-screen image in the traditional field-sequence display method, and the some blue information corresponds to some information of the third sub-screen image in the traditional field-sequence display method.

[0128] Thus: in the first subfield, open the W subpixel, and open the R and B subpixels.

[0129] The green backlight BL corresponding to the second sub-screen image (green image) in the traditional field sequence display method G Confirmed as the first back photon data BL G 1 ;

[0130] The second backlight data BL R 1 Set to: BL R *a / (a+1); where a is a first preset coefficient, which represents the ratio of the transmittance of the W sub-pixel to the transmittance of the R and B sub-pixels. This first preset coefficient can be preset by the LCD panel manufacturer. Specifically, the backlight brightness of the LCD panel can be set to 100, and with the W, R, and B sub-pixels lit up respectively, the transmittance of the sub-pixels on the LCD panel can be measured using a standard device (e.g., a brightness analyzer) to determine the first preset coefficient.

[0131] The third backlight data BL B 1 Set to: BL B *a / (a+1);

[0132] In the first subfield, all green information is transmitted through the W subpixel; therefore, the transmittance of the W subpixel is set to T. G At this time, the light projected from the W sub-pixel is: T G *(BL R 1 BL G BL B 1 ).

[0133] To enhance the R component of the first subfield and reduce the color separation effect in the second and third subfields, the transmittance T of the R sub-pixel is increased. R 1 The calculation formula is:

[0134] T R 1=a*(T R *BL R -T G *BL R 1 ) / BL R 1 =a*(T R *(1+1 / a)-T G ) = T R *(a+1)-a*T G .

[0135] It should be noted that some red information in the first subfield is transmitted through the W sub-pixel and the R sub-pixel. The reason for multiplying by 'a' in the above formula is that the optical transmittance of the R sub-pixel is 1 / a of that of the W sub-pixel, and compensation is needed when calculating the transmittance of the R sub-pixel of the LCD panel.

[0136] If T R 1 Greater than 1 (1 is the upper limit of the maximum light transmittance of the R sub-pixel) such as T R max And T R max Then set T R 1 =1; otherwise, T R 1 =T R *(a+1)-a*T G .

[0137] In the first subfield, some blue information is transmitted from the W and B subpixels. The third panel subdata is set in the same way as the second panel subdata, with the transmittance T of the B subpixel being... B 1 The calculation formula is:

[0138] T B 1 =a*(T B *BL B -T G *BL B 1 ) / BL B 1 =a*(T B *(1+1 / a)-T G ) = T B *(a+1)-a*T G .

[0139] For the second subfield, display the remaining R component in the R component of the image to be displayed after removing the R component already displayed in the first subfield, and let the remaining R component pass through the W sub-pixel.

[0140] Thus, in the second subfield, the W subpixel is turned on, and the R and B subpixels are turned off.

[0141] Second round backlit R backlit BL R 2 Set to BL R 1 The transmittance T of the W sub-pixel R 2 Set to:

[0142] T R 2 =(T R *BL R -T G *BL R 1 -T R 1 *BL R 1 ) / BL R 1 =T R *(1+1 / a)-T G -T R 1 .

[0143] With R and B subpixels turned off, the transmittance of the R subpixel is set to 0, and the transmittance of the B subpixel is set to 0.

[0144] For the third subfield, display the remaining B component in the B component of the image to be displayed after removing the B component already displayed in the first subfield, and let the remaining B component pass through the W sub-pixel.

[0145] Thus, in the third subfield, the W subpixel is turned on, and the R and B subpixels are turned off.

[0146] Third round, backlit B, backlit BL B 3 Set to BL B 1 The transmittance T of the W sub-pixel B 3 Set to:

[0147] T B 3 =(T B *BL B -T G *BL B –T B 1 *BL B 1 ) / BL R 1 =T R*(1+1 / a)-T G –T B 1 .

[0148] With R and B subpixels turned off, the transmittance of the R subpixel is set to 0, and the transmittance of the B subpixel is set to 0.

[0149] For the third subfield, the remaining B component in the B component of the image to be displayed after removing the B component already displayed in the first subfield is shown, and the remaining R component is allowed to pass through the W sub-pixel.

[0150] (2) For the case where the image to be displayed is divided into two subfield images (including a first subfield image and a second subfield image), the remaining R component is displayed in the second subfield and the remaining B component is displayed in the third subfield of the three subfield images in case (1), and then combined into one field for display, that is, the remaining R component and the remaining B component are displayed in one second subfield image. S1001 is explained below for this case:

[0151] When the first pixel includes a first sub-pixel and two second sub-pixels, and the two second sub-pixels include a fifth sub-pixel and a sixth sub-pixel, the first target backlight data includes first backlight sub-data, second backlight sub-data and third backlight sub-data; the first target panel data includes first panel sub-data, second panel data and third panel data; and the second target panel data includes sixth panel data and seventh panel data.

[0152] The image processing unit executes S1001, and is configured to:

[0153] S1001B1, based on the pixel information of the pixels to be displayed, determine the initial backlight data and initial transmittance data corresponding to the image to be displayed in a traditional field sequence display. The initial backlight data includes initial backlight data for the first color, initial backlight data for the second color, and initial backlight data for the third color; the initial transmittance data includes initial transmittance data for the first color, initial transmittance data for the second color, and initial transmittance data for the third color.

[0154] The implementation process of S1001B1 is similar to that of S1001A1, and will not be described again in the embodiments of this application.

[0155] S1001B2, the initial backlight data of the first color is determined as the first backlight sub-data, and the first backlight sub-data is the backlight data corresponding to the first color in the first sub-field image;

[0156] Based on the initial backlight data of the second color and the first preset coefficient, the second backlight sub-data is determined. The second backlight sub-data is the backlight data corresponding to the second color in the first subfield image. The second backlight sub-data is less than the initial backlight data of the second color.

[0157] Based on the initial backlight data of the third color and the first preset coefficient, the third backlight sub-data is determined. The third backlight sub-data is the backlight data corresponding to the third color in the first subfield image. The third backlight sub-data is less than the initial backlight data of the third color.

[0158] Set the first panel sub-data as the initial transmittance data of the first color. The first panel sub-data is the transmittance data of the first sub-pixel in the first subfield image.

[0159] Based on the initial transmittance data of the first color, the initial transmittance data of the second color, and the first preset coefficient, the second panel sub-data is determined. The second panel sub-data is the transmittance data of the fifth sub-pixel in the first sub-field image.

[0160] Based on the initial transmittance data of the first color, the initial transmittance data of the third color, and the first preset coefficient, the third panel sub-data is determined. The third panel sub-data is the transmittance data of the sixth sub-pixel in the first sub-field image.

[0161] Based on the second backlight data, the third backlight data, and the second preset coefficient, the second target backlight data is determined;

[0162] Set the sixth panel sub-data as the second panel sub-data. The sixth panel data is the transmittance data of the fifth sub-pixel in the second sub-field image.

[0163] Set the seventh panel sub-data to the third panel sub-data. The seventh panel sub-data is the transmittance data corresponding to the sixth sub-pixel in the second subfield image.

[0164] The process of determining the target driving data corresponding to the first subfield image in S1001B2 is similar to that in S1001A2, and will not be described again here.

[0165] For the second subfield image, turn off the W subpixel, turn on the R and B subpixels, and set its backlight to R, B backlight: b*BL R 1 +b*BL B 1 , where b is the second preset coefficient.

[0166] The transmittance of the R sub-pixel is set to T. R 2 The transmittance of sub-pixel B is set to: T B 3 .

[0167] It should be noted that b is an adjustable parameter used to optimize the backlight dynamic range; a typical value can be b = a, which means increasing the backlight intensity of R and B by a times to compensate for the brightness reduction of R sub-pixels and B sub-pixels after they are coated with CF film.

[0168] Understandably, other methods besides those described above can be used to determine the target-driven data.

[0169] For example, in some embodiments, the target driving data corresponding to the image to be displayed can be obtained in a variety of different ways. For instance, the LBSR stencil-FSC method mentioned in "Image Saturation Improvement for 180Hz Stencil-FSC LCD With Side-Lit LED Backlight" can be used to determine the target driving data, thereby obtaining an image with higher saturation.

[0170] Specifically, the target-driven data is determined according to the following formula:

[0171]

[0172] in, and I i Indicates image brightness; and BL i This indicates the intensity of traditional fully-on backlight and blurred backlight images when using local color backlight dimming technology.

[0173] This indicates that the backlight signal is fully lit in a traditional field-sequence display, BL G This indicates that the green backlight signal in each backlight zone is used with LBSR, T G This represents the compensated transmittance data for each green sub-pixel.

[0174]

[0175] Alternatively, target-driven data can be obtained using the LGBNN network described in "Deep learning-based real-time driving for 3-field sequential color displays with low color breakup and high fidelity".

[0176] S1002, at the first moment, the transmittance of the target pixel is controlled according to the first target panel data, and the backlight module is driven according to the first target backlight data to obtain the first subfield image.

[0177] The target pixel is any one of the first pixels among a plurality of pixels.

[0178] In one possible implementation, the first moment corresponds to the moment when the display device displays the first subfield image. Based on the transmittance of different pixels in the first target panel data, the corresponding target pixels are controlled to transmit different light intensities. At the same time, based on the backlight components corresponding to R, G, and B in the first target backlight data, the backlight module is driven to emit colored backlight, thereby obtaining the first subfield image.

[0179] S1003, at the second moment, the transmittance of the target pixel is controlled according to the second target panel data, and the backlight module is driven according to the second target backlight data to obtain the second subfield image.

[0180] In one possible implementation, when the image to be displayed is divided into a first subfield image and a second subfield image, the process of obtaining the second subfield image at the second time is similar to the process in S1002, and will not be described again here.

[0181] Understandably, when the image to be displayed is divided into one first subfield image and two second subfield images, the image processing module is further configured to: at a third moment, drive the backlight module according to the target backlight driving data corresponding to the third subfield image, and control the transmittance of the target pixels according to the third target panel data corresponding to the third subfield image, thereby obtaining the third subfield image. Understandably, the process of obtaining the third subfield image at the third moment is similar to the processes in S1002 and S1003, and will not be described in detail here.

[0182] It should be noted that, compared to conventional display devices, the above embodiment adjusts the G sub-pixel in the first pixel to a W sub-pixel (i.e., the first sub-pixel), while the filter layers corresponding to the R and B sub-pixels remain unchanged. However, it is not limited to adjusting the G sub-pixel to a W sub-pixel. Considering the luminous efficiency of RGB LEDs, for R lamps with lower luminous efficiency, from the perspective of improving the equivalence of the display device, the R sub-pixel in the first pixel can be adjusted to a W sub-pixel (i.e., the first sub-pixel), while the filter layers corresponding to the G and B sub-pixels remain unchanged. Alternatively, the B sub-pixel in the first pixel can also be adjusted to a W sub-pixel (i.e., the first sub-pixel), while the filter layers corresponding to the R and G sub-pixels remain unchanged.

[0183] This application provides a display device. For any first pixel in a liquid crystal layer, the first pixel includes two types of sub-pixels: a first sub-pixel and a second sub-pixel. The area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent. The light-emitting side of the area corresponding to the second sub-pixel is covered by a filter layer. That is, the first sub-pixel can output colored light (i.e., white light), and the second sub-pixel outputs light of a single color. Therefore, in a first aspect, during field-sequence display, a colored image can be displayed using the first sub-pixel in the first sub-field, and a monochrome image can be displayed using the second sub-pixel in the second sub-field. This concentrates the image intensity in a single sub-field, reducing human sensitivity to color separation and thus improving image display quality. In a second aspect, when displaying an image in the first sub-field, while the first sub-pixel outputs RGB colored light, a portion of monochrome light can be output using the second sub-pixel to supplement the image's detail information. This allows for the presentation of as much color information as possible in the first sub-field, further reducing human sensitivity to color separation and improving the display effect. Thirdly, since the area corresponding to the first sub-pixel is not covered by a filter layer or the covered filter layer is transparent, the light output by the backlight module can be emitted directly, which can reduce light intensity loss, improve the light transmittance of the panel, and thus reduce the power consumption of the display device.

[0184] Based on the above-described display device, this application also provides a control method, applied to any of the above-described display devices, the control method comprising:

[0185] Determine the target driving data for the pixels to be displayed in the image to be displayed;

[0186] Wherein, the pixel to be displayed is any pixel in the image to be displayed, the image to be displayed corresponds to at least two subfield images, the target driving data of the pixel to be displayed includes the target driving data corresponding to the at least two subfield images corresponding to the image to be displayed, the at least two subfield images include a first subfield image and at least one second subfield image, the target driving data of the first subfield image includes first target backlight data and first target panel data, the first target backlight data is used to indicate the target backlight data corresponding to the first color, the second color, and the third color respectively, the first target panel data is used to indicate the target panel transmittance corresponding to the first target backlight data, the target driving data of the second subfield image includes second target backlight data and second target panel data, the second target backlight data is used to indicate the target backlight data corresponding to the second color and / or the third color, the second target panel data is used to indicate the target panel transmittance corresponding to the second target backlight data;

[0187] At the first moment, the transmittance of the target pixel is controlled according to the first target panel data, and the backlight module in the display device is driven according to the first target backlight data to obtain the first subfield image;

[0188] At the second moment, the transmittance of the target pixel is controlled according to the second target panel data, and the backlight module in the display device is driven according to the second target backlight data to obtain the second subfield image.

[0189] The implementation process of each step in this control method can be referred to in correspondence with the steps executed by the image processing module in the display device described above.

[0190] This application embodiment also provides a display device, which includes: a panel driving module and a display panel, wherein:

[0191] The panel driver module is configured to drive the display panel to sequentially display at least two subfield images corresponding to the image to be displayed, wherein the first subfield image among the at least two subfield images is a color image;

[0192] Wherein, the sum of the image luminance components of the first color corresponding to each of the at least two subfield images is equal to the image luminance of the first color corresponding to the image to be displayed, and the image luminance component of the first color in the first subfield image is greater than the image luminance component of the first color corresponding to any other subfield.

[0193] The sum of the luminance components of the second color corresponding to each of the at least two subfield images is equal to the luminance of the second color corresponding to the image to be displayed, and the luminance component of the second color corresponding to the first subfield image is greater than the luminance component of the second color corresponding to any other subfield.

[0194] The sum of the luminance components of the third color corresponding to each of the at least two subfield images is equal to the luminance of the third color corresponding to the image to be displayed, and the luminance component of the third color corresponding to the first subfield image is greater than the luminance component of the third color corresponding to any other subfield.

[0195] In one embodiment, the panel driving module may be the image processing unit in the foregoing embodiments, and its specific driving method is similar to that in the foregoing embodiments. The embodiments of this application will not be described again here.

[0196] In another embodiment, the panel driver module may include a timing controller (T-CON) and / or a bridge controller for open-panel normalization (BCON).

[0197] It is understandable that the aforementioned panel driver module may be integrated into the display panel, or the display panel may not have the panel driver module integrated into it.

[0198] In some embodiments, the RGB value of each pixel on the display panel can be determined by using a colorimeter or a light sensor, as well as the luminance component corresponding to each color.

[0199] In one possible implementation, the brightness corresponding to different colors in the image to be displayed is assigned to different field images. For example, when the panel driving module drives the display panel to sequentially display two sub-field images corresponding to the image to be displayed, the first sub-field image displays the first color (green), the second color (red), and the third color (blue), and the second sub-field image supplements red and blue. Then, the brightness component corresponding to green in the first sub-field image is the brightness corresponding to green in the image to be displayed. It can be understood that the first sub-field image displays all the green components in the image to be displayed. The sum of the brightness components corresponding to red in the first sub-field image and the brightness components corresponding to red in the second sub-field image is the brightness corresponding to red in the image to be displayed. The sum of the brightness components corresponding to blue in the first sub-field image and the brightness components corresponding to blue in the second sub-field image is the brightness corresponding to blue in the image to be displayed. In this embodiment, the first sub-field image displays most of the color information, that is, the brightness components corresponding to red, green, and blue in the first sub-field image are all higher than the brightness components of the corresponding colors in the second sub-field image.

[0200] Similarly, when the panel driver module drives the display panel to sequentially display the three sub-field images corresponding to the image to be displayed, the brightness components corresponding to different colors of the image to be displayed in different sub-field images are similar to those corresponding to the two sub-field images of the image to be displayed. This application embodiment will not be described again here.

[0201] The display device provided in this application embodiment displays most of the color information of the image to be displayed in the first subfield image, and then displays the remaining color information through the remaining subfields. By concentrating the image intensity in a single subfield, the sensitivity of the human body to color separation can be reduced, thereby reducing color separation and improving the display quality of the image.

[0202] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0203] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0204] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0205] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and there may be other division methods in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0206] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0207] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0208] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display device, characterized in that, include: A backlight module, wherein the backlight module is used to sequentially emit backlight corresponding to each of the multiple subfields, and the backlight corresponding to each subfield is different; The liquid crystal panel includes multiple pixels, at least one of the multiple pixels being a first pixel that includes N sub-pixels, where N is an integer greater than or equal to 2, and the refresh rate of the liquid crystal panel is the same as the refresh rate of the backlight module. A light filter layer is located on the light-emitting side of the liquid crystal panel. The light filter layer includes N sub-regions, each of which corresponds to one of the N sub-pixels. Among the N sub-pixels, the sub-regions corresponding to the M first sub-pixels do not have corresponding light filter layers or the light filter layer is transparent. Furthermore, the sub-regions corresponding to the NM second sub-pixels among the N sub-pixels are light filter regions, where M is an integer less than N.

2. The display device according to claim 1, characterized in that, The first pixel includes a first sub-pixel and a second sub-pixel, and the sub-region corresponding to the second sub-pixel is provided with a first color filter layer, a second color filter layer or a third color filter layer; Alternatively, the first pixel may include a first sub-pixel and two second sub-pixels, and each sub-region corresponding to the second sub-pixel may be provided with a first color filter layer, a second color filter layer or a third color filter layer, and the color of the filter layer provided in each sub-region corresponding to the second sub-pixel may be different. Alternatively, the first pixel may include two first sub-pixels and one second sub-pixel, and the sub-region corresponding to the second sub-pixel may be provided with a first color filter layer, a second color filter layer, or a third color filter layer.

3. The display device according to claim 1, characterized in that, The first pixel includes a first sub-pixel and two second sub-pixels. Each sub-region corresponding to the second sub-pixel is provided with a first color filter layer, a second color filter layer or a third color filter layer, and the color of the filter layer provided in each sub-region corresponding to the second sub-pixel is different. The plurality of pixels also includes a second pixel, which includes two third sub-pixels and a fourth sub-pixel. The sub-region corresponding to the third sub-pixel has no corresponding filter layer or the filter layer is transparent. The color of the filter layer set in the sub-region corresponding to the fourth sub-pixel is different from the color of the filter layer set in the sub-region corresponding to the two second sub-pixels. The first pixel and the second pixel are arranged alternately in both the horizontal and vertical directions.

4. The display device according to claim 1, characterized in that, The at least one first pixel includes a target pixel, and the display device further includes: The image processing unit is configured to: determine the target driving data of the pixels to be displayed in the image to be displayed; Wherein, the pixel to be displayed is any pixel in the image to be displayed, the image to be displayed corresponds to at least two subfield images, the target driving data of the pixel to be displayed includes the target driving data corresponding to the at least two subfield images respectively, the at least two subfield images include a first subfield image and at least one second subfield image, the target driving data of the first subfield image includes first target backlight data and first target panel data, the first target backlight data is used to indicate the target backlight data corresponding to the first color, the second color, and the third color respectively, the first target panel data is used to indicate the target panel transmittance corresponding to the first target backlight data, the target driving data of the second subfield image includes second target backlight data and second target panel data, the second target backlight data is used to indicate the target backlight data corresponding to the second color and / or the third color, the second target panel data is used to indicate the target panel transmittance corresponding to the second target backlight data; At the first moment, the transmittance of the target pixel is controlled according to the first target panel data, and the backlight module is driven according to the first target backlight data to obtain the first subfield image, wherein the target pixel is any one of the plurality of pixels. At the second moment, the transmittance of the target pixel is controlled according to the second target panel data, and the backlight module is driven according to the second target backlight data to obtain the second sub-field image.

5. The display device according to claim 4, characterized in that, In the case where the first pixel includes a first sub-pixel and two second sub-pixels, and the two second sub-pixels include a fifth sub-pixel and a sixth sub-pixel, the first target backlight data includes first backlight sub-data, second backlight sub-data and third backlight sub-data, and the first target panel data includes first panel sub-data, second panel data and third panel data. The image processing unit executes the target driving data for determining the pixels to be displayed in the image to be displayed, and is configured to: Based on the pixel information of the pixel to be displayed, the initial backlight data and initial transmittance data corresponding to the pixel to be displayed are determined. The initial backlight data includes initial backlight data of a first color, initial backlight data of a second color, and initial backlight data of a third color. The initial transmittance data includes initial transmittance data of a first color, initial transmittance data of a second color, and initial transmittance data of a third color. The initial backlight data of the first color is determined as the first backlight sub-data, and the first backlight sub-data is the backlight data corresponding to the first color in the first sub-field image; Based on the initial backlight data of the second color and the first preset coefficient, the second backlight sub-data is determined. The second backlight sub-data is the backlight data corresponding to the second color in the first subfield image. The second backlight sub-data is less than the initial backlight data of the second color. Based on the initial backlight data of the third color and the first preset coefficient, the third backlight sub-data is determined. The third backlight sub-data is the backlight data corresponding to the third color in the first subfield image. The third backlight sub-data is less than the initial backlight data of the third color. The first panel sub-data is set as the first color initial transmittance data, and the first panel sub-data is the transmittance data corresponding to the first sub-pixel in the first sub-field image; Based on the first initial color transmittance data, the second initial color transmittance data, and the first preset coefficient, the second panel sub-data is determined, and the second panel sub-data is the transmittance data corresponding to the fifth sub-pixel in the first sub-field image; Based on the first color initial transmittance data, the third color initial transmittance data, and the first preset coefficient, the third panel sub-data is determined, wherein the third panel sub-data is the transmittance data corresponding to the sixth sub-pixel in the first sub-field image.

6. The display device according to claim 5, characterized in that, In the case where the at least two subfield images include two second subfield images, the two second subfield images include a third subfield image and a fourth subfield image; the second target backlight data includes fourth backlight sub-data and fifth backlight sub-data; and the second target panel data includes fourth panel sub-data and fifth panel data. The fourth backlight sub-data is set as the second backlight sub-data, and the fourth backlight sub-data is the backlight data corresponding to the third subfield image; The fifth backlight sub-data is set as the third backlight sub-data, and the fifth backlight sub-data is the backlight data corresponding to the fourth sub-field image; Based on the first initial color transmittance data, the second initial color transmittance data, the second panel sub-data, and the first preset coefficient, the fourth panel sub-data is determined, wherein the fourth panel sub-data is the transmittance data corresponding to the first sub-pixel in the third sub-field image; Based on the first color initial transmittance data, the third color initial transmittance data, the third panel sub-data, and the first preset coefficient, the fifth panel sub-data is determined, wherein the fifth panel sub-data is the transmittance data corresponding to the first sub-pixel in the fourth sub-field image.

7. The display device according to claim 5, characterized in that, In the case where the at least two subfield images include a second subfield image, the second target panel data includes a sixth panel subdata and a seventh panel data; Based on the second backlight data, the third backlight data, and the second preset coefficient, the second target backlight data is determined; The sixth panel sub-data is set as the second panel sub-data, where the sixth panel sub-data is the transmittance data corresponding to the fifth sub-pixel in the second sub-field image; The seventh panel sub-data is set as the third panel sub-data, whereby the seventh panel sub-data is the transmittance data corresponding to the sixth sub-pixel in the second sub-field image.

8. The display device according to any one of claims 1 to 7, characterized in that, The first color is green.

9. A control method, characterized in that, The control method, applied to the display device according to any one of claims 1 to 8, comprises: Determine the target driving data for the pixels to be displayed in the image to be displayed; Wherein, the pixel to be displayed is any pixel in the image to be displayed, the image to be displayed corresponds to at least two subfield images, the target driving data of the pixel to be displayed includes the target driving data corresponding to the at least two subfield images respectively, the at least two subfield images include a first subfield image and at least one second subfield image, the target driving data of the first subfield image includes first target backlight data and first target panel data, the first target backlight data is used to indicate the target backlight data corresponding to the first color, the second color, and the third color respectively, the first target panel data is used to indicate the target panel transmittance corresponding to the first target backlight data, the target driving data of the second subfield image includes second target backlight data and second target panel data, the second target backlight data is used to indicate the target backlight data corresponding to the second color and / or the third color, the second target panel data is used to indicate the target panel transmittance corresponding to the second target backlight data; At the first moment, the transmittance of the target pixel is controlled according to the first target panel data, and the backlight module in the display device is driven according to the first target backlight data to obtain the first sub-field image, wherein the target pixel is any one of the multiple pixels. At the second moment, the transmittance of the target pixel is controlled according to the second target panel data, and the backlight module in the display device is driven according to the second target backlight data to obtain the second sub-field image.

10. A display device, characterized in that, include: The panel driver module and the display panel, wherein: The panel driving module is configured to drive the display panel to sequentially display at least two subfield images corresponding to the image to be displayed, wherein the first subfield image among the at least two subfield images is a color image; Wherein, the sum of the image brightness components of the first color corresponding to each of the at least two subfield images is equal to the image brightness of the first color corresponding to the image to be displayed, and the image brightness component of the first color in the first subfield image is greater than the image brightness component of the first color corresponding to any other subfield. The sum of the image luminance components of the second color corresponding to each of the at least two subfield images is equal to the image luminance of the second color corresponding to the image to be displayed, and the image luminance component of the second color corresponding to the first subfield image is greater than the image luminance component of the second color corresponding to any other subfield. The sum of the image luminance components of the third color corresponding to each of the at least two subfield images is equal to the image luminance of the third color corresponding to the image to be displayed, and the image luminance component of the third color corresponding to the first subfield image is greater than the image luminance component of the third color corresponding to any other subfield.

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