A display device and a display method

Abstract

Disclosed are, in some embodiments, a display device and a display method. The display device comprises a display screen, a backlight source, and a processor configured to: acquire image data of an image to be displayed; when first partition image data is first base color image data, drive a first base color light source in a corresponding first backlight partition according to backlight brightness of a first base color represented by the first partition image data, the first base color light source being any one of a red light source, a green light source, and a blue light source; and determine transmittances of a first base color sub-pixel and a white sub-pixel in each pixel in a first virtual partition in the display screen according to brightness of each pixel in the first partition image data, so as to simultaneously turn on the first base color sub-pixel and the white sub-pixel, the first base color sub-pixel being a sub-pixel corresponding to a color of the first base color light source. In this way, the display brightness of the image to be displayed is improved while ensuring the color saturation of the image to be displayed.

Description

Technical Field

[0001] In some embodiments, the invention relates to the field of display technology, and to, but is not limited to, a display device and a display method. Background Technology

[0002] Red, Green, Blue, and White (RGBW) panels are a display panel technology that adds a white sub-pixel to the traditional red, green, and blue (RGB) primary color sub-pixels. RGBW panels are mainly used in Liquid Crystal Displays (LCDs) to improve the screen's peak brightness and overall energy efficiency without significantly increasing power consumption.

[0003] However, in related technologies, when using RGBW panels for display, there is a problem of not being able to balance color gamut performance and display brightness. Summary of the Invention

[0004] In view of this, some embodiments provide a display device and a display method, which can drive a first primary color light source and simultaneously start the first primary color sub-pixel and the white sub-pixel when receiving first primary color image data, thereby not only ensuring the color saturation of the image to be displayed, but also improving the display brightness of the image to be displayed.

[0005] In some embodiments, a display device is provided, comprising:

[0006] The display screen includes an array of pixels, each pixel including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel;

[0007] A backlight connected to the display screen, the backlight comprising multiple backlight zones; the backlight comprising a red light source, a green light source, and a blue light source;

[0008] The processor, which is connected to both the display screen and the backlight, is configured to:

[0009] Acquire image data of the image to be displayed, the image data including partition image data corresponding to each of the backlight partitions;

[0010] When the first partition image data is the first primary color image data, the first primary color light source in the corresponding first backlight partition is driven according to the backlight brightness of the first primary color characterized by the first partition image data. The first primary color light source is any one of red light source, green light source and blue light source.

[0011] Based on the brightness of each pixel in the first partition image data, determine the transmittance of the first primary color sub-pixel and the transmittance of the white sub-pixel in each pixel of the first virtual partition in the display screen, so as to simultaneously turn on the first primary color sub-pixel and the white sub-pixel. The first primary color sub-pixel is the sub-pixel corresponding to the color of the first primary color light source.

[0012] In the aforementioned display device, when the first image data corresponding to the first backlight zone in multiple backlight zones is the first primary color image data, only the first primary color light source in the first backlight zone is driven. This first primary color light source can be any one of a red light source, a green light source, or a blue light source. That is, in some embodiments, only one of the three light sources is driven and illuminated, while the other two are not driven and illuminated. This reduces power consumption, improves the energy efficiency of the display device, and extends the lifespan of the display device. Furthermore, it avoids emitting colors other than the first primary color from the source, thus preventing the generation of stray light. Since the driven first primary color light source corresponds to the first primary color image data, the color saturation of the image to be displayed in the first backlight zone remains unchanged. In addition, based on the transmittance of the first primary color sub-pixels and the transmittance of the white sub-pixels in each pixel of the first virtual zone, the first primary color sub-pixels and the white sub-pixels are simultaneously activated. Thus, the display brightness of the partition image in the first virtual zone can be increased by activating the white sub-pixels. Ultimately, the display brightness of the image to be displayed is improved while ensuring the color saturation of the image to be displayed.

[0013] In some embodiments, the first partition image data includes the brightness of a plurality of first primary color sub-pixels; the processor is configured to drive a first primary color light source in a corresponding first backlight partition according to the backlight brightness of the first primary color characterized by the first partition image data, including: determining the maximum sub-pixel brightness among the brightness of the plurality of first primary color sub-pixels as the backlight brightness of the first primary color; and driving the first primary color light source in the first backlight partition according to the backlight brightness of the first primary color.

[0014] By using the brightness of the largest sub-pixel as the backlight brightness of the first primary color, a content-adaptive backlight control strategy is employed, achieving a precise match between pixel-level brightness requirements and zone-level backlight supply. The backlight brightness of the first backlight zone is determined by the brightest first primary color sub-pixel within that zone, thus achieving high local brightness and a black surrounding background. This allows the display to simultaneously show both bright and dark areas, significantly improving static contrast and resulting in a clearer, more three-dimensional image. This, in turn, enhances contrast and improves high dynamic range performance.

[0015] In some embodiments, the processor is configured to determine the transmittance of a first primary color sub-pixel and the transmittance of a white sub-pixel in each pixel of a first virtual partition in the display screen based on the brightness of each pixel in the first partition image data, including: for each pixel in the first virtual partition, determining the transmittance of a white sub-pixel in the pixel based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel; determining the brightness gain of the pixel based on the transmittance of the white sub-pixel; and determining the transmittance of the first primary color sub-pixel in the pixel based on the transmittance of the white sub-pixel and the brightness gain.

[0016] By assigning "brightness" and "color" tasks to the white sub-pixel (W) with higher light transmittance, and "chroma and color purity" tasks to the first primary color sub-pixel (e.g., R), the design and coordinated control of brightness and chroma are achieved. This is accomplished by first determining the transmittance of W to satisfy color gamut and brightness, and then adjusting the transmittance of R based on the inverse relationship of W to correct color. This allows for better maintenance of color saturation at high brightness levels, thus achieving decoupling and precise control of brightness and chroma. The white sub-pixel avoids the losses associated with color filters, resulting in significantly higher optical efficiency than color sub-pixels, thereby maximizing hardware performance and improving overall brightness and energy efficiency.

[0017] In some embodiments, the processor is configured to determine the transmittance of a white sub-pixel in a pixel based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel, including: determining the ratio of the brightness of the first primary color sub-pixel in the pixel to the backlight brightness of the first primary color as the transmittance of the white sub-pixel in the pixel.

[0018] By measuring the color requirement of a single pixel within the absolute scale supplied by the first backlight zone where that pixel resides, the numerator is the brightness value of the first primary color (e.g., R) that the pixel is expected to display. This is the "target" given by the first zone image data, and the denominator is the maximum brightness of the first primary color (e.g., R) backlight that the first backlight zone can actually provide. This is the hardware's "capacity ceiling." The ratio of the numerator to the denominator represents "the theoretical minimum transmittance of the first primary color subpixel required under the current backlight conditions to achieve the target brightness." This application directly assigns this "theoretical transmittance," which should belong to the color subpixel, to the white subpixel, thereby achieving a direct mapping of physical meaning. Furthermore, taking red as the first primary color as an example, the transmittance of the white subpixel represents "the total luminous flux required to meet the red brightness requirement." Since the white subpixel has already undertaken this portion of the luminous flux, the original red subpixel no longer needs to contribute to the brightness. In subsequent steps, the display device determines a "brightness gain" based on the transmittance of the white subpixel, which reduces the transmittance of the red subpixel, allowing the red subpixel to focus on providing chroma (saturation) correction.

[0019] In some embodiments, the processor is configured to determine the brightness gain of the pixel based on the transmittance of the white sub-pixel, including: determining the brightness gain of the pixel as the ratio of the transmittance of the white sub-pixel to a reference gain extreme value.

[0020] The transmittance of the white subpixel represents the "proportion of the white light channel being open." In a typical RGBW model, the luminous efficacy of the white subpixel is usually higher than that of the color subpixel (because there is less absorption from the color filter). With a reference gain extreme of 1, in some embodiments, the luminous flux contribution of the white subpixel is normalized to the same scale as that of the color subpixel for comparison. If the transmittance of the white subpixel is 0.5, it is considered that the white subpixel contributes a brightness gain equivalent to 0.5 times the luminous flux of a unit color subpixel, and the implementation process is simple.

[0021] In some embodiments, the processor is configured to determine the transmittance of a first primary color sub-pixel in the pixel based on the transmittance of the white sub-pixel and the luminance gain, including: weighting the transmittance of the white sub-pixel based on the luminance gain to obtain a weighted transmittance; and determining the difference between the weighted transmittance and the transmittance of the white sub-pixel as the transmittance of the first primary color sub-pixel in the pixel.

[0022] Determining the transmittance of the first primary color sub-pixel using the above method ensures that the red, green, and blue ratios of each pixel in the first virtual region remain unchanged after the white sub-pixel is enabled, thus guaranteeing color accuracy and color saturation. Furthermore, since the white sub-pixel provides peak brightness, a lower voltage can be used to drive the backlight, thereby expanding the dynamic range and reducing power consumption.

[0023] In some embodiments, the processor is configured to weight the transmittance of the white sub-pixel based on the luminance gain to obtain a weighted transmittance, including: determining that the product of the luminance gain and the transmittance of the white sub-pixel is a transmittance increment; and determining the sum of the transmittance increment and the transmittance of the white sub-pixel as the weighted transmittance.

[0024] The purpose of the aforementioned weighting operation is to establish a "brightness-adjusted white light contribution reference value" for subsequent calculations of color sub-pixel transmittance, and also to provide a correct benchmark for the subsequent "difference method to determine color transmittance". When the extreme value of the aforementioned reference gain is 1, the compensation amount of the first primary color sub-pixel is proportional to the square of the transmittance of the white sub-pixel, automatically achieving visual rationality of weak compensation in dark areas and strong compensation in bright areas, and also achieving non-linear compensation. Non-linear control is implemented using only addition and multiplication, simplifying the processing. Since the function is continuously monotonic, it ensures the system stability of the display device. A linear operation (weighted summation) implicitly implements a non-linear mapping (square relationship), thereby balancing brightness efficiency and color saturation in the RGBW system.

[0025] In some embodiments, the processor is further configured to: when the first partition image data is multi-primary-color image data, drive multiple primary-color light sources in the first backlight partition according to the backlight brightness of the multiple primary colors represented by the first partition image data, wherein the multiple primary-color light sources are at least two of red light sources, green light sources, and blue light sources; determine the transmittance of multiple primary-color sub-pixels and the transmittance of white sub-pixels in each pixel of the first virtual partition in the display screen according to the brightness of each pixel in the first partition image data, so as to simultaneously turn on the multiple primary-color sub-pixels and the white sub-pixels, wherein the multiple primary-color sub-pixels are sub-pixels corresponding to the colors of the multiple primary-color light sources.

[0026] At the backlight layer, the R, G, and B backlighting within each backlight zone can be controlled independently. For example, in an image with a bright red apple and a dark background, only the red backlighting in the apple's zone will be bright, while the green and blue backlighting will remain very dim. At the pixel layer of the display, the R, G, B, and W sub-pixels within each pixel can independently control transmittance, allowing for fine-tuning of the backlight. The backlighting in the dark background is almost completely black, while the red backlighting in the apple's area is bright. This significantly reduces the spillover of different colors of light into adjacent areas at the backlight layer, resulting in purer blacks, brighter highlights, sharper edges between light and dark areas, and a substantial reduction in halo effects. In some embodiments, the backlight, by independently controlling the RGB backlight brightness, has already established a high-saturation color tone and extremely high brightness potential for each zone at the backlight layer, providing a basic color and brightness framework. The RGBW sub-pixels of the display work on this "color backlight base," reproducing colors with higher saturation and brightness. In other words, the pixel layer performs fine-tuning of color rendering and brightness. Ultimately, the display device is able to exhibit highly saturated colors at high brightness (such as vibrant sunlight and neon lights), expanding the color volume. Energy is precisely delivered to the required color channels, achieving directional energy delivery. The display's pixel layer utilizes white sub-pixels (W) to participate in brightness synthesis with higher luminous efficiency. This significantly reduces overall system power consumption and heat generation when displaying color content, optimizing energy efficiency. The backlight itself already provides highly saturated colored light. The backlight and pixels form a two-stage cascaded color correction, ensuring color accuracy and avoiding color distortion inherent in RGBW panels. In some embodiments, the plurality of primary colors include red, green, and blue; the processor is configured to determine the transmittance of a plurality of primary color sub-pixels and the transmittance of white sub-pixels in each pixel of a first virtual partition in the display screen based on the brightness of each pixel in the first partition image data, including: for each pixel in the first partition image data, determining the transmittance of the white sub-pixel and the brightness gain of the pixel based on the backlight brightness of red, green, and blue, and the brightness of the red, green, and blue sub-pixels in the pixel; determining the transmittance of the red sub-pixel of the pixel based on the backlight brightness of red, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the red sub-pixel in the pixel; determining the transmittance of the green sub-pixel of the pixel based on the backlight brightness of green, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the green sub-pixel in the pixel; and determining the transmittance of the blue sub-pixel of the pixel based on the backlight brightness of blue, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the blue sub-pixel in the pixel.

[0027] In some embodiments, the RGB backlight can be independently turned off. To display a pure black scene, the contrast is pushed to its physical limit. Since color volume equals the product of color gamut and brightness range, when displaying highly saturated red, the red backlight is bright while the green and blue backlights are extremely dark, ensuring color purity from the light source itself. Based on this, the display's pixel layer enables white subpixels (W) to handle most of the brightness enhancement, while precisely reducing the transmittance of RGB subpixels to offset the dilution of saturation by W light. This allows for color saturation to be maintained even at high brightness, achieving fidelity fine-tuning and ultimately expanding the color volume. In some embodiments, the halo is primarily red (because the red backlight is the main illumination source), consistent with the object's color, reducing the visual abruptness of the halo and making the transition between bright objects and dark backgrounds more natural. This eliminates color halos and cross-interference. Furthermore, "directional spectral energy delivery" is implemented. When displaying any color, the system only illuminates or enhances the necessary color components in the backlight and turns off or weakens unnecessary color components. This reduces or even eliminates energy waste, maximizing energy efficiency. The task of increasing brightness is shared by the backlight and the W sub-pixel, both of which are high-efficiency components, thereby relieving hardware pressure and improving the display reliability of the display device.

[0028] In some embodiments, a display method is also provided, applied to a processor of a display device, the display device further comprising:

[0029] The display screen includes an array of pixels, each pixel including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel;

[0030] A backlight connected to the display screen, the backlight comprising multiple backlight zones; the backlight comprising a red light source, a green light source, and a blue light source;

[0031] The processor is connected to both the display screen and the backlight.

[0032] The method includes:

[0033] Acquire image data of the image to be displayed, the image data including partition image data corresponding to each backlight partition;

[0034] When the first partition image data is the first primary color image data, the first primary color light source in the corresponding first backlight partition is driven according to the backlight brightness of the first primary color characterized by the first partition image data. The first primary color light source is any one of red light source, green light source and blue light source.

[0035] Based on the brightness of each pixel in the first partition image data, determine the transmittance of the first primary color sub-pixel and the transmittance of the white sub-pixel in each pixel of the first virtual partition in the display screen, so as to simultaneously turn on the first primary color sub-pixel and the white sub-pixel. The first primary color sub-pixel is the sub-pixel corresponding to the color of the first primary color light source.

[0036] In some embodiments, when the first image data corresponding to the first backlight zone in a plurality of backlight zones is the first primary color image data, only the first primary color light source in the first backlight zone is driven. This first primary color light source is any one of a red, green, or blue light source. That is, in some embodiments, only one of the three light sources is driven and illuminated, while the other two are not, thereby reducing power consumption, improving the energy efficiency of the display device, and extending the lifespan of the display device; it also prevents the emission of colors other than the first primary color from the source, thus avoiding the generation of stray light. Since the driven first primary color light source corresponds to the first primary color image data, the color saturation of the image to be displayed in the first backlight zone can be kept constant. Furthermore, based on the transmittance of the first primary color sub-pixels and the transmittance of the white sub-pixels in each pixel of the first virtual zone, the first primary color sub-pixels and white sub-pixels are simultaneously activated. This allows the display brightness of the partitioned image in the first virtual zone to be increased by activating the white sub-pixels. Ultimately, the display brightness of the image to be displayed is increased while ensuring the color saturation of the image to be displayed. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in some embodiments, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of RGBW panel pixels in related technologies;

[0039] Figure 2 This is a schematic diagram of a structure for an RGBW panel paired with a backlight in related technologies;

[0040] Figure 3 This is a schematic diagram of the external structure of a display device provided in some embodiments;

[0041] Figure 4 This is a schematic diagram of a display device provided in some embodiments;

[0042] Figure 5 This is a schematic diagram of a structure of an RGBW panel with a backlight provided in some embodiments;

[0043] Figure 6 This is a processing flowchart of a processor provided in some embodiments;

[0044] Figure 7 This is a schematic diagram of an implementation process for driving a first primary color light source in a first backlight partition, provided in some embodiments.

[0045] Figure 8 This is a schematic diagram of an implementation process for determining transmittance provided in some embodiments;

[0046] Figure 9 This is a schematic diagram of an implementation process for determining the transmittance of a first primary color sub-pixel, provided in some embodiments;

[0047] Figure 10 This is another processing flowchart of the processor provided in some embodiments;

[0048] Figure 11 This is a schematic diagram illustrating another implementation process for determining transmittance provided in some embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of some embodiments clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of some embodiments. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for descriptive purposes in some embodiments only and is not intended to be limiting of this application.

[0051] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0052] It should be noted that the terms "first, second, third" used in some embodiments are used to distinguish similar or different objects and do not represent a specific ordering of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0053] Before providing a further detailed description of some embodiments, the nouns and terms used in some embodiments are described, and the nouns and terms used in some embodiments are subject to the following interpretations.

[0054] 1) An RGBW panel is a display panel that adds a white subpixel to the RGB three-color subpixel base. The core purpose of an RGBW panel is to improve brightness and energy efficiency, and optimize color performance. An RGBW panel refers to a display screen in some embodiments.

[0055] In an RGBW panel, each pixel adds a white subpixel to the RGB base, forming an RGBW four-color structure. Common arrangements include square arrangements, striped arrangements, and white subpixels driven independently (or shared with color subpixels).

[0056] RGBW panels can directly use white sub-pixels to emit light, reducing energy loss from mixing the three RGB colors, thereby significantly increasing peak brightness and achieving enhanced brightness.

[0057] RGBW panels can reduce power consumption because the light transmission efficiency of white subpixels is generally higher than that of RGB mixed white light.

[0058] RGBW panels represent an evolution in display technology, balancing brightness, energy efficiency, and color to meet the demands of high dynamic range and mobile devices.

[0059] 2) Backlight is the light-emitting component of a liquid crystal display (LCD). The backlight is located in the light-incident direction of the LCD panel, providing uniform and controllable illumination. An LCD refers to the aforementioned display device, and an LCD panel refers to the aforementioned display screen.

[0060] A backlight is a component or module that provides the necessary illumination source for an LCD. Since liquid crystals themselves do not emit light, they must rely on a backlight to illuminate the image so that people can see it. Therefore, the function of a backlight is to generate light and evenly illuminate the entire LCD panel.

[0061] RGB backlighting can be controlled in zones, which is called "multi-zone backlighting" or "RGB zone backlighting". RGB backlighting can improve color and contrast performance.

[0062] 3) Color saturation describes the vividness or purity of a color. It is the proportion of pure light (spectral color) contained in a color. The higher the proportion, the more vivid and intense the color; the lower the proportion, the duller and closer to gray the color.

[0063] 4) Color shift refers to the phenomenon where the colors displayed by a display device deviate from their theoretical standards or expected values; it is a defect in color distortion. Color change refers to a perceptible difference between the actual color displayed and the color required by the input signal.

[0064] 5) Display brightness refers to the intensity of light and dark on the light-emitting surface of a display device, which is a physical quantity of light output.

[0065] To better understand the display devices provided in some embodiments, the technical problems existing in display devices in the related art will first be explained.

[0066] Figure 1 This is a schematic diagram of the structure of RGBW panel pixels in related technologies. Please refer to it. Figure 1 An RGBW panel refers to a panel that adds a W sub-pixel to the three RGB sub-pixels to improve transmittance and thus reduce the overall power consumption of the device.

[0067] Figure 2 This is a schematic diagram of a structure for an RGBW panel paired with a backlight in related technologies. Please refer to it. Figure 2 In related technologies, RGBW panels are always used with white backlighting, which can be YAG, KSF, or QD backlighting. Please refer to [further details]. Figure 2 Typically, when displaying highly saturated images, such as pure red images, this combination solution slightly activates the W subpixel to improve energy efficiency. However, this causes a decrease in color saturation because the red image is mixed with white light.

[0068] However, if the W subpixel is turned off in order to avoid reducing color saturation, there is no way to improve energy efficiency. Therefore, the relevant technology cannot achieve a balance between color gamut performance and energy efficiency.

[0069] In view of this, some embodiments provide a display device including a display screen, a backlight, and a processor. When the processor detects that the first partition image data is first primary color image data, it drives the first primary color light source in the corresponding first backlight partition according to the backlight brightness of the first primary color represented by the first partition image data. The first primary color light source is any one of a red light source, a green light source, and a blue light source. The processor determines the transmittance of the first primary color sub-pixel and the transmittance of the white sub-pixel in each pixel of the first virtual partition in the display screen according to the brightness of each pixel in the first partition image data, so as to simultaneously activate the first primary color sub-pixel and the white sub-pixel. The first primary color sub-pixel is a sub-pixel corresponding to the color of the first primary color light source. In some embodiments, when the first partition image data corresponding to the first backlight partition in multiple backlight partitions is first primary color image data, the display device only drives the first primary color light source in the first backlight partition. The first primary color light source is any one of a red light source, a green light source, and a blue light source. In some embodiments, only one of the three light sources is driven to illuminate, while the other two are not. This reduces power consumption, improves the energy efficiency of the display device, and extends its lifespan. Furthermore, it prevents the emission of colors other than the first primary color from the source, thus avoiding stray light generation. Since the driven first primary color light source corresponds to the first primary color image data, the color saturation of the image to be displayed in the first backlight zone remains unchanged. In addition, the first primary color sub-pixels and white sub-pixels are simultaneously activated based on the transmittance of the first primary color sub-pixels and the transmittance of the white sub-pixels in each pixel of the first virtual zone. This allows the activated white sub-pixels to increase the display brightness of the image in the first virtual zone. Ultimately, the display brightness of the image to be displayed is improved while ensuring its color saturation.

[0070] To make the purpose and technical solution of this application clearer and more intuitive, the display device disclosed in this application will be described in detail below with reference to the accompanying drawings.

[0071] The following describes exemplary applications of the display device provided in some embodiments. In some embodiments, the display device can be implemented as various types of terminals such as televisions, projectors, monitors, laptops, tablets, in-vehicle displays, smartphones, robots, drones, medical devices, smart wearable devices, and smart mirrors. The following describes an exemplary application when the display device is implemented as a television.

[0072] Figure 3 This is a schematic diagram of the external structure of a display device provided in some embodiments. Please refer to it. Figure 3 The display device 100 includes a display screen 110, the shape and size of which are generally adapted to the shape and size of the display device 100.

[0073] Figure 4 This is a schematic diagram of a display device provided in some embodiments. Please refer to it. Figure 4 The display device 100 includes a display screen 110, a backlight 120, and a processor 130. The display screen 110 is connected to the backlight 120, and the processor 130 is connected to both the display screen 110 and the backlight 120. The processor 130 controls the display screen 110 and the backlight 120 to display an image on the display screen 110. In some embodiments, the display device 100, when displaying an image, can improve the display brightness of the image while ensuring its color saturation.

[0074] Figure 5 This is a schematic diagram of an RGBW panel with a backlight provided in some embodiments. Please refer to it. Figure 5 The display device 100 includes a display screen 110 and a backlight 120, wherein the display screen 110 includes an array of pixels. Please refer to [link to relevant documentation]. Figure 5 Each pixel 10 includes a red sub-pixel 11, a green sub-pixel 12, a blue sub-pixel 13, and a white sub-pixel 14. The backlight 120 includes multiple backlight zones, including a red light source 21, a green light source 22, and a blue light source 23.

[0075] In some embodiments, the backlight source does not include a white light source.

[0076] Figures 3 to 5 The structural diagrams shown provide a convenient understanding of the external and internal structures of the display device disclosed in some embodiments, as well as the functions of the various components constituting the display device. Based on this, the display device disclosed in some embodiments can be controlled to operate using the display methods provided in some embodiments. In some embodiments, the proposed display methods can be controlled and implemented by the processor of the display device.

[0077] Please see Figure 6 , Figure 6 This is a processing flowchart of a processor provided in some embodiments. For example... Figure 6 The processing flowchart shown includes the following steps:

[0078] Step S601: Obtain the image data of the image to be displayed.

[0079] In some embodiments, the image data includes partition image data corresponding to each backlight partition.

[0080] In some embodiments, the image to be displayed is a complete image that will be shown on the display screen. For example, the image to be displayed can be a starry sky image, a frame of a movie, a page of a document, or a game scene.

[0081] In some embodiments, the image data of the image to be displayed is a digital, computer-processable representation of the image. The image data is typically a two-dimensional pixel matrix containing the color and brightness information of each pixel, such as RGB values.

[0082] In some embodiments, the image data of the image to be displayed is segmented or divided according to the backlight partitions to obtain partition image data corresponding to each backlight partition. The first partition image data includes all pixel information falling within a first virtual partition on the display screen, which corresponds to a first backlight partition; one virtual partition contains multiple pixels.

[0083] During the implementation process, the image data of each partition is used together to form the image data of the image to be displayed.

[0084] In some embodiments, when the first partition image data is the first primary color image data, the following steps S602A and S603A are performed.

[0085] Step S602A: When the first partition image data is the first primary color image data, drive the first primary color light source in the corresponding first backlight partition according to the backlight brightness of the first primary color represented by the first partition image data.

[0086] In some embodiments, the first primary color light source is any one of a red light source, a green light source, and a blue light source.

[0087] In some embodiments, taking red as an example, the first primary color is a red image, and the first primary color light source is a red light source. Based on this, the red light source in the first backlight zone is driven according to the red backlight brightness. The red backlight brightness is determined based on the image data of the first zone.

[0088] In some embodiments, since the first partition image data is red image data, both the green and blue brightness values ​​in the first partition image data are 0. During implementation, the maximum red brightness value in the first partition image data can be determined as the red backlight brightness. Alternatively, the average red brightness value in the first partition image data can be determined as the red backlight brightness. Furthermore, the maximum red brightness value and the average red brightness value in the first partition image data can be weighted to obtain the red backlight brightness. The red backlight brightness can also be determined based on a histogram.

[0089] Step S603A: Determine the transmittance of the first primary color sub-pixel and the transmittance of the white sub-pixel in each pixel of the first virtual partition in the display screen according to the brightness of each pixel in the first partition image data, so as to simultaneously turn on the first primary color sub-pixel and the white sub-pixel.

[0090] In some embodiments, the first primary color sub-pixel is a sub-pixel corresponding to the color of the first primary color light source.

[0091] In some embodiments, taking red as the first primary color, the transmittance of the red subpixels and the transmittance of the white subpixels in each pixel of the first virtual partition can be determined based on the brightness of the red subpixels of each pixel in the first partition image data. The transmittance of the red subpixels is then used to control the deflection of the liquid crystal molecules corresponding to the red subpixels, thereby activating the red subpixels; similarly, the transmittance of the white subpixels is used to control the deflection of the liquid crystal molecules corresponding to the white subpixels, thereby activating the white subpixels. This allows the display screen to display based on the first partition image data. Furthermore, the transmittance of the red and white subpixels ensures that the red-green-blue ratio displayed on the screen is consistent with the red-green-blue ratio in the image data.

[0092] In the implementation process, for each pixel, the transmittance of the white subpixel can be determined first, and then the transmittance of the red subpixel can be determined based on the transmittance of the white subpixel. Alternatively, the transmittance of the white subpixel and the brightness gain of the pixel can be determined first, and then the transmittance of the red subpixel can be determined based on the transmittance of the white subpixel and the brightness gain. Another possible approach is to first determine the transmittance of the white subpixel, then determine the brightness gain of the pixel based on the transmittance of the white subpixel, and finally determine the transmittance of the red subpixel based on the transmittance of the white subpixel and the brightness gain.

[0093] In the aforementioned display device, when the first image data corresponding to the first backlight zone in multiple backlight zones is the first primary color image data, only the first primary color light source in the first backlight zone is driven. This first primary color light source can be any one of a red light source, a green light source, or a blue light source. That is, in some embodiments, only one of the three light sources is driven and illuminated, while the other two are not driven and illuminated. This reduces power consumption, improves the energy efficiency of the display device, and extends the lifespan of the display device. Furthermore, it avoids emitting colors other than the first primary color from the source, thus preventing the generation of stray light. Since the driven first primary color light source corresponds to the first primary color image data, the color saturation of the image to be displayed in the first backlight zone remains unchanged. In addition, based on the transmittance of the first primary color sub-pixels and the transmittance of the white sub-pixels in each pixel of the first virtual zone, the first primary color sub-pixels and the white sub-pixels are simultaneously activated. Thus, the display brightness of the partition image in the first virtual zone can be increased by activating the white sub-pixels. Ultimately, the display brightness of the image to be displayed is improved while ensuring the color saturation of the image to be displayed.

[0094] In some embodiments, the first partition image data includes the brightness of a plurality of first primary color sub-pixels, based on which... Figure 7 This is a schematic diagram illustrating one implementation process for driving the first primary color light source in the first backlight zone, provided in some embodiments. Please refer to... Figure 7 The implementation process of the above step S602A may include the following steps S021 and S022, which are described in detail below.

[0095] Step S021: Determine the brightness of the largest sub-pixel among the brightness of multiple first primary color sub-pixels as the backlight brightness of the first primary color.

[0096] Continuing the example above, assuming the first partition image data includes the brightness of six red sub-pixels, namely 125, 100, 120, 100, 250, and 200, then 250 is determined as the red backlight brightness. Since the green and blue brightness values ​​are both 0, in some embodiments it is unnecessary to determine the blue and green backlight brightness. Even if the blue and green backlight brightness are determined, both will still be 0.

[0097] Step S022: Drive the first primary color light source in the first backlight zone according to the backlight brightness of the first primary color.

[0098] Continuing with the example above, the red light source in the first backlight zone is driven by 250, that is, the red light source in the first backlight zone is controlled to emit light at a brightness of 250.

[0099] By using the brightness of the largest sub-pixel as the backlight brightness of the first primary color, a content-adaptive backlight control strategy is employed, achieving a precise match between pixel-level brightness requirements and zone-level backlight supply. The backlight brightness of the first backlight zone is determined by the brightest first primary color sub-pixel within that zone. For example, for bright spots in a dark scene (such as a starry sky), only the first primary color backlight of the backlight zone containing the bright stars will brighten, while the first primary color backlight of surrounding zones will remain at a low brightness. This achieves high local brightness and a black surrounding background. Consequently, the display can simultaneously show both bright and dark areas, significantly improving static contrast and resulting in a more transparent and three-dimensional image. This enhances contrast and improves high dynamic range performance.

[0100] In some embodiments, Figure 8 This is a schematic diagram illustrating one implementation process for determining transmittance in some embodiments. Please refer to it. Figure 8 The implementation process of the above step S603A may include the following steps S031 to S033, which are described in detail below.

[0101] Step S031: For each pixel in the first virtual partition, determine the transmittance of the white sub-pixel in the pixel based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel.

[0102] In some embodiments, the ratio of the brightness of the first primary color sub-pixel to the backlight brightness of the first primary color can be determined as the transmittance of the white sub-pixel in that pixel.

[0103] In other embodiments, the brightness ratio of the first primary color sub-pixel to the backlight brightness of the first primary color can be determined first, and then the product of the brightness ratio and a preset coefficient can be determined as the transmittance of the white sub-pixel in that pixel.

[0104] Step S032: Determine the brightness gain of the pixel based on the transmittance of the white sub-pixel.

[0105] In some embodiments, the transmittance of a white subpixel can be determined as the pixel's brightness gain.

[0106] In other embodiments, the ratio of the transmittance of a white sub-pixel to a reference gain extremum can also be used to determine the pixel's luminance gain.

[0107] Step S033: Determine the transmittance of the first primary color sub-pixel in the pixel based on the transmittance and brightness gain of the white sub-pixel.

[0108] In some embodiments, following the example above, the product of the transmittance of the white subpixel and the luminance gain can be determined as the transmittance of the red subpixel.

[0109] In other embodiments, the transmittance of the white sub-pixel can be weighted based on the brightness gain to obtain a weighted transmittance; then the difference between the weighted transmittance and the transmittance of the white sub-pixel can be determined as the transmittance of the red sub-pixel.

[0110] By assigning the "brightness" task to the white sub-pixel (W) with higher light transmittance, and the "chroma and color purity" task to the first primary color sub-pixel (e.g., R), the design and coordinated control of brightness and chroma are achieved. This is accomplished by first determining the transmittance of W to satisfy color gamut and brightness, and then adjusting the transmittance of R based on the inverse relationship of W to correct color. This allows for better maintenance of color saturation at high brightness levels, thus achieving decoupling and precise control of brightness and chroma. The white sub-pixel avoids the losses of color filters and has a much higher optical efficiency than the color sub-pixels, maximizing hardware performance and improving overall brightness and energy efficiency. A closed-loop feedback is established to ensure color fidelity. In some embodiments, the assignment is not unidirectional but a closed-loop system with "brightness gain" feedback, quantifying the effect of the W sub-pixel's intervention on overall brightness. In some embodiments, the high-energy-efficiency white sub-pixel and the accurate first primary color sub-pixel are combined to achieve a balance between brightness enhancement, power consumption control, and color fidelity.

[0111] In some embodiments, the implementation process of step S031 may include: determining the ratio of the brightness of the first primary color sub-pixel in the pixel to the backlight brightness of the first primary color as the transmittance of the white sub-pixel in the pixel.

[0112] In some embodiments, following the example above, assuming that the first partition includes six pixels and the image data of the first partition includes the brightness of six red sub-pixels, which are 125, 100, 120, 100, 250, and 200 respectively, and the backlight brightness of red is 250, then 50%, 40%, 48%, 40%, 100%, and 80% are successively determined as the transmittance of the white sub-pixels in these six pixels.

[0113] By measuring the color requirement of a single pixel within the absolute scale supplied by the first backlight zone where that pixel resides, the numerator is the brightness value of the first primary color (e.g., R) that the pixel is expected to display. This is the "target" given by the first zone image data, and the denominator is the maximum brightness of the first primary color (e.g., R) backlight that the first backlight zone can actually provide. This is the hardware's "capacity ceiling." The ratio of the numerator to the denominator represents "the theoretical minimum transmittance of the first primary color subpixel required under the current backlight conditions to achieve the target brightness." This application directly assigns this "theoretical transmittance," which should belong to the color subpixel, to the white subpixel, thereby achieving a direct mapping of physical meaning. Furthermore, taking red as the first primary color as an example, the transmittance of the white subpixel represents "the total luminous flux required to meet the red brightness requirement." Since the white subpixel has already undertaken this portion of the luminous flux, the original red subpixel no longer needs to contribute to the brightness. In subsequent steps, the display device determines a "brightness gain" based on the transmittance of the white subpixel, which reduces the transmittance of the red subpixel, allowing the red subpixel to focus on providing chroma (saturation) correction.

[0114] In some embodiments, the implementation process of step S032 above may include: determining the brightness gain of the pixel as the ratio of the transmittance of the white sub-pixel to the extreme value of the reference gain.

[0115] In some embodiments, the reference gain extreme value can be set in advance based on experience. For example, the reference gain extreme value can be a value greater than or equal to 1, such as 1, 2, 3, etc.

[0116] In some embodiments, taking a reference gain extreme value of 1 as an example, following the example above, 50%, 40%, 48%, 40%, 100%, and 80% are determined as the brightness gains of these six pixels in sequence.

[0117] The transmittance of the white subpixel represents the "proportion of the white light channel being open." In a typical RGBW model, the luminous efficacy of the white subpixel is usually higher than that of the color subpixel (because there is less absorption from the color filter). With a reference gain extreme of 1, in some embodiments, the luminous flux contribution of the white subpixel is normalized to the same scale as that of the color subpixel for comparison. If the transmittance of the white subpixel is 0.5, it is considered that the white subpixel contributes a brightness gain equivalent to 0.5 times the luminous flux of a unit color subpixel, and the implementation process is simple.

[0118] In some embodiments, Figure 9 This is a schematic diagram illustrating an implementation process for determining the transmittance of a first primary color sub-pixel in some embodiments. Please refer to it. Figure 9The implementation process of the above step S033 may include the following steps S331 and S332, which are explained in detail below.

[0119] Step S331: The transmittance of the white sub-pixel is weighted based on the brightness gain to obtain the weighted transmittance.

[0120] In some embodiments, the sum of the brightness gain and a preset value can be determined first; then the product of the sum and the transmittance of the white sub-pixel can be determined as the weighted transmittance.

[0121] In some embodiments, the product of the brightness gain and the transmittance of the white sub-pixel can be determined as the transmittance gain; and the sum of the transmittance gain and the transmittance of the white sub-pixel can be determined as the weighted transmittance.

[0122] Step S332: The difference between the weighted transmittance and the transmittance of the white sub-pixel is determined as the transmittance of the first primary color sub-pixel in the pixel.

[0123] In some embodiments, taking the first primary color sub-pixel as an example of a red sub-pixel, assuming a weighted transmittance of 200% and a transmittance of 100% for a white sub-pixel, then 100% is determined as the transmittance of the red sub-pixel.

[0124] Determining the transmittance of the first primary color sub-pixel using the above method ensures that the red, green, and blue ratios of each pixel in the first virtual region remain unchanged after the white sub-pixel is enabled, thus guaranteeing color accuracy and color saturation. Furthermore, since the white sub-pixel provides peak brightness, a lower voltage can be used to drive the backlight, thereby expanding the dynamic range and reducing power consumption.

[0125] In some embodiments, the implementation process of step S331 may include: determining the product of the brightness gain and the transmittance of the white sub-pixel as the transmittance increment; and determining the sum of the transmittance increment and the transmittance of the white sub-pixel as the weighted transmittance.

[0126] In some embodiments, following the example above, for the pixel corresponding to the brightness of the red sub-pixel of 125, the brightness gain of the pixel and the transmittance of the white sub-pixel are both 50%, then 25% is determined as the transmittance increment, and 75% is determined as the weighted transmittance.

[0127] The purpose of the aforementioned weighting operation is to establish a "brightness-adjusted white light contribution reference value" for subsequent calculations of color sub-pixel transmittance, and also to provide a correct benchmark for the subsequent "difference method to determine color transmittance". When the extreme value of the aforementioned reference gain is 1, the compensation amount of the first primary color sub-pixel is proportional to the square of the transmittance of the white sub-pixel, automatically achieving visual rationality of weak compensation in dark areas and strong compensation in bright areas, and also achieving non-linear compensation. Non-linear control is implemented using only addition and multiplication, simplifying the processing. Since the function is continuously monotonic, it ensures the system stability of the display device. A linear operation (weighted summation) implicitly implements a non-linear mapping (square relationship), thereby balancing brightness efficiency and color saturation in the RGBW system.

[0128] In some embodiments, the first partition image data is multi-primary-color image data.

[0129] Figure 10 This is another processing flowchart of the processor provided in some embodiments; please refer to it. Figure 10 If the first partition image data is multi-primary-color image data, then steps S602B and S603B are executed after step S601. In this case, the brightness values ​​of at least two color channels in the multi-primary-color image data are non-zero.

[0130] Step S602B: Drive multiple primary color light sources in the first backlight partition according to the backlight brightness corresponding to the multiple primary colors characterized by the first partition image data.

[0131] In some embodiments, the plurality of primary color light sources are at least two of red, green and blue light sources.

[0132] In some embodiments, if the red and green brightness values ​​in the first partition image data are non-zero, then the red backlight brightness is determined based on the red brightness value in the first backlight partition, and the green backlight brightness is also determined based on the green brightness value in the first backlight partition. Finally, the red light source in the first backlight partition is driven based on the red backlight brightness; and the green light source in the first backlight partition is also driven based on the green backlight brightness. The method for determining the backlight brightness can refer to the method for determining backlight brightness in step S602A above.

[0133] Step S603B: Based on the brightness of each pixel in the first partition image data, determine the transmittance of multiple primary color sub-pixels and the transmittance of white sub-pixels in each pixel of the first virtual partition in the display screen, so as to simultaneously enable multiple primary color sub-pixels and white sub-pixels.

[0134] In some embodiments, the multiple primary color sub-pixels are sub-pixels corresponding to the colors of multiple primary color light sources.

[0135] In some embodiments, if the red and green brightness values ​​in the first partition image data are non-zero, the transmittance of the red subpixel, the transmittance of the green subpixel, and the transmittance of the white subpixel of each pixel in the first virtual partition are determined. The transmittance of the red subpixel is then used to control the deflection of the liquid crystal molecules corresponding to the red subpixel to activate the red subpixel; the transmittance of the green subpixel is also used to control the deflection of the liquid crystal molecules corresponding to the green subpixel to activate the green subpixel; and the transmittance of the white subpixel is also used to control the deflection of the liquid crystal molecules corresponding to the white subpixel to activate the white subpixel.

[0136] In other embodiments, if the red, green, and blue brightness values ​​in the first partition image data are all non-zero, then the transmittance of the red subpixel, the transmittance of the green subpixel, the transmittance of the blue subpixel, and the transmittance of the white subpixel of each pixel in the first virtual partition are determined. The transmittance of the red subpixel is then used to control the deflection of the liquid crystal molecules corresponding to the red subpixel to activate the red subpixel; the transmittance of the green subpixel is also used to control the deflection of the liquid crystal molecules corresponding to the green subpixel to activate the green subpixel; the transmittance of the blue subpixel is also used to control the deflection of the liquid crystal molecules corresponding to the blue subpixel to activate the blue subpixel; and the transmittance of the white subpixel is also used to control the deflection of the liquid crystal molecules corresponding to the white subpixel to activate the white subpixel.

[0137] In some embodiments, the implementation process of step S603B can refer to the implementation process of step S603A described above, except that step S603A determines the transmittance of a first primary color sub-pixel, while step S603B determines the transmittance of multiple primary color sub-pixels.

[0138] At the backlight layer, the R, G, and B backlighting within each backlight zone can be controlled independently. For example, in an image with a bright red apple and a dark background, only the red backlighting in the apple's zone will be bright, while the green and blue backlighting will remain very dim. At the pixel layer of the display, the R, G, B, and W sub-pixels within each pixel can independently control transmittance, allowing for fine-tuning of the backlight. The backlighting in the dark background is almost completely black, while the red backlighting in the apple's area is bright. This significantly reduces the spillover of different colors of light into adjacent areas at the backlight layer, resulting in purer blacks, brighter highlights, sharper edges between light and dark areas, and a substantial reduction in halo effects. In some embodiments, the backlight, by independently controlling the RGB backlight brightness, has already established a high-saturation color tone and extremely high brightness potential for each zone at the backlight layer, providing a basic color and brightness framework. The RGBW sub-pixels of the display work on this "color backlight base," reproducing colors with higher saturation and brightness. In other words, the pixel layer performs fine-tuning of color rendering and brightness. Ultimately, the display device can exhibit highly saturated colors at high brightness (such as a vibrant sun or neon lights), expanding the color volume. For example, when displaying yellow using a display device provided in some embodiments, the backlight illuminates red and green backlights while the blue backlight is off. Energy is precisely delivered to the required color channels, achieving directional energy delivery. The pixel layer of the display utilizes white subpixels (W) to participate in brightness synthesis with higher luminous efficiency. This significantly reduces overall system power consumption and heat generation when displaying color content, optimizing energy efficiency, which is crucial for large-screen TVs and mobile devices. The backlight itself already provides highly saturated colored light. For example, when displaying pure red, the backlight is already a bright red light; that is, the colored backlight acts as "color pre-correction," and the pixel layer of the display acts as "final fine-tuning." Red subpixels in the pixels require only a small amount of transmittance to maintain saturation, while white subpixels can be used more aggressively to increase brightness without causing severe color deviation. The backlight and pixels form a two-stage cascaded color correction, ensuring color accuracy and avoiding color distortion inherent in RGBW panels.

[0139] In some embodiments, the primary colors include red, green, and blue. Figure 11 This is a schematic diagram illustrating another implementation process for determining transmittance provided in some embodiments. Please refer to it. Figure 11 The above step S603B can be achieved through the following steps S31 to S34, which are explained in detail below.

[0140] Step S31: For each pixel in the first partition image data, based on the red backlight brightness, green backlight brightness, blue backlight brightness, and the brightness of the red sub-pixel, green sub-pixel, and blue sub-pixel in the pixel, determine the transmittance of the white sub-pixel and the brightness gain of the pixel.

[0141] In some embodiments, the transmittance of a white subpixel can be determined by the following formula (1).

[0142] Formula (1);

[0143] In the above formula (1), T W This represents the transmittance of the white sub-pixel. I R This represents the brightness of the red sub-pixel within a pixel. I G Indicates the brightness of the green sub-pixel. I B This indicates the brightness of the blue sub-pixel. BL R Indicates the brightness of the red backlight. BL G Indicates the brightness of the green backlight. BL B This indicates the brightness of the blue backlight. min() This indicates taking the minimum value. If the denominator is 0, the ratio after division is 1.

[0144] In other embodiments, the transmittance of the white sub-pixel can also be a function of the minimum value, such as multiplying the minimum value by a coefficient. Formula (1) above is based on the minimum value.

[0145] In some embodiments, the luminance gain can be determined by the following formula (2).

[0146] Formula (2);

[0147] In the above formula (2), M Indicates brightness gain. I R This represents the brightness of the red sub-pixel within a pixel. I G Indicates the brightness of the green sub-pixel. I B This indicates the brightness of the blue sub-pixel. BL R Indicates the brightness of the red backlight. BL G Indicates the brightness of the green backlight. BL B This indicates the brightness of the blue backlight. min() This indicates taking the minimum value. max() This indicates taking the maximum value. If the denominator is 0, the ratio after division is 1.

[0148] Step S32: Based on the red backlight brightness, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the red sub-pixel in the pixel, determine the transmittance of the red sub-pixel of the pixel.

[0149] In some embodiments, the transmittance of the red subpixel can be determined by the following formula (3).

[0150] Formula (3);

[0151] In formula (3), T R This represents the transmittance of the red subpixel. M Indicates brightness gain. I R This represents the brightness of the red sub-pixel within a pixel. BL R Indicates the brightness of the red backlight. T W This represents the transmittance of the white sub-pixel.

[0152] Step S33: Based on the green backlight brightness, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the green sub-pixel in the pixel, determine the transmittance of the green sub-pixel of the pixel.

[0153] In some embodiments, the transmittance of the green subpixel can be determined by the following formula (4).

[0154] Formula (4);

[0155] In formula (4), T G This indicates the transmittance of the green sub-pixel. M Indicates brightness gain. I G This represents the brightness of the green subpixel within the pixel. BL G Indicates the brightness of the green backlight. T W This represents the transmittance of the white sub-pixel.

[0156] Step S34: Based on the blue backlight brightness, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the blue sub-pixel in the pixel, determine the transmittance of the blue sub-pixel of the pixel.

[0157] In some embodiments, the transmittance of the blue subpixel can be determined by the following formula (5).

[0158] Formula (5);

[0159] In formula (5), TB This indicates the transmittance of the blue sub-pixel. M Indicates brightness gain. I B This represents the brightness of the blue subpixel within the pixel. BL B Indicates the brightness of the blue backlight. T W This represents the transmittance of the white sub-pixel.

[0160] In some embodiments, the RGB backlights can be independently turned off. To display a pure black scene, all three colors of backlight can be completely turned off, achieving true zero brightness. This solves the problem of graying or whitening caused by the inability to completely turn off white backlights when displaying colored black scenes (such as a deep blue night sky). It achieves contrast at the physical limit. Since color volume equals the product of color gamut and brightness range, when displaying highly saturated red, the red backlight is bright, while the green and blue backlights are extremely dark, ensuring color purity from the light source itself. In other words, the backlight can provide a high-saturation base. Based on this, the display's pixel layer allows the white sub-pixels (W) to undertake most of the brightness enhancement task, while precisely reducing the transmittance of the RGB sub-pixels to offset the dilution of saturation by W light. This allows for the maintenance of color saturation even at high brightness, reproducing colors that are "dazzlingly bright yet vividly vibrant," achieving fidelity fine-tuning. Ultimately, it expands the color volume. In some embodiments, the halo is primarily red (because the red backlight is the main illumination source), which matches the object's color, reducing the visual abruptness of the halo and making the transition between bright objects and dark backgrounds more natural. This eliminates color halos and cross-interference. Furthermore, "directional spectral energy delivery" is achieved. When displaying any color, the system only illuminates or strengthens the necessary color components in the backlight and turns off or weakens unnecessary color components. This reduces or even eliminates energy waste, maximizing energy efficiency. The task of brightness enhancement is shared by the backlight and the W sub-pixels, both of which are high-efficiency components, thus alleviating hardware pressure and improving the display device's reliability. In addition, a unified brightness gain (based on the RGB three channels and W transmittance) is calculated for each pixel, meaning the system comprehensively evaluates the contribution of white light to the overall pixel brightness and then uses this same benchmark to measure and adjust the required compensation amounts for the R, G, and B sub-pixels. This ensures the coordination and consistency of color adjustment, avoiding color shift caused by imbalances in three-channel compensation. Guided by the unified brightness gain, independent but algorithmically isomorphic transmittance calculations are then performed on the R, G, and B sub-pixels, achieving independent compensation for each channel. This allows for precise handling of various complex color scenarios, whether it's highly saturated monochrome, mixed colors, or white.

[0161] By employing an RGB backlight combined with an RGBW panel (RGBW display) in some embodiments of the provided display, (I) is achieved.R I G I B Input to (T) W T R T G T B The mapping transformation maintains the R:G:B ratio unchanged, meaning that the color hue and saturation remain unchanged. Because backlight adjustment is considered in some embodiments, the W sub-pixel can display white and other colors, thus meeting the energy efficiency requirements of various saturation levels. Please continue to refer to... Figure 5 For example, in a pure red image of (255 0 0), the backlight Tw is determined to be 1 according to the above formula (1), which means it is fully open. Since the W sub-pixel is exposed to pure red backlight, the color saturation of the pure red image remains unchanged, while the brightness is doubled or the power consumption is reduced by half.

[0162] It should be understood that although the steps in the above flowcharts are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the above flowcharts may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps. In addition, the above embodiments can be implemented independently or in combination with each other, without limitation.

[0163] It should be understood that the terms "one embodiment," "an embodiment," "some embodiments," or "some implementations" used throughout the specification, and "optionally," mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "some implementations," and "optionally," appearing throughout the specification, do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments without conflict.

[0164] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.

[0165] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0166] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0167] In the several embodiments provided in this application, it should be understood that the disclosed products and methods can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, and can be electrical, mechanical, or other forms.

[0168] 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.

[0169] 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.

[0170] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0171] The above description is merely an embodiment 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: The display screen includes an array of pixels, each pixel including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel; A backlight connected to the display screen, the backlight comprising multiple backlight zones; the backlight comprising a red light source, a green light source, and a blue light source; The processor, which is connected to both the display screen and the backlight, is configured to: Acquire image data of the image to be displayed, the image data including partition image data corresponding to each of the backlight partitions; When the first partition image data is the first primary color image data, the first primary color light source in the corresponding first backlight partition is driven according to the backlight brightness of the first primary color characterized by the first partition image data. The first primary color light source is any one of red light source, green light source and blue light source. For each pixel in the first virtual partition of the display screen, the transmittance of the white sub-pixel in the pixel is determined based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel. Furthermore, the brightness gain of the pixel is determined based on the transmittance of the white sub-pixel; the transmittance of the first primary color sub-pixel in the pixel is determined based on the transmittance of the white sub-pixel and the brightness gain, so as to enable the first primary color sub-pixel based on the transmittance of the first primary color sub-pixel and enable the white sub-pixel based on the transmittance of the white sub-pixel; wherein, the first primary color sub-pixel is a sub-pixel corresponding to the color of the first primary color light source.

2. The display device according to claim 1, characterized in that, The first partition image data includes the brightness of multiple first primary color sub-pixels; The processor is configured to drive the first primary color light source in the corresponding first backlight partition according to the backlight brightness of the first primary color characterized by the first partition image data, including: The brightness of the largest sub-pixel among the brightness of multiple first primary color sub-pixels is determined as the backlight brightness of the first primary color; The first primary color light source in the first backlight zone is driven according to the backlight brightness of the first primary color.

3. The display device according to claim 1, characterized in that, The processor is configured to determine the transmittance of the white sub-pixel of the pixel based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel, including: The ratio of the brightness of the first primary color sub-pixel in the pixel to the backlight brightness of the first primary color is determined as the transmittance of the white sub-pixel in the pixel.

4. The display device according to claim 1, characterized in that, The processor is configured to determine the brightness gain of the pixel based on the transmittance of the white sub-pixel, including: The ratio of the transmittance of the white sub-pixel to the extreme value of the reference gain is determined as the brightness gain of the pixel.

5. The display device according to claim 1, characterized in that, The processor is configured to determine the transmittance of a first primary color sub-pixel in the pixel based on the transmittance of the white sub-pixel and the luminance gain, including: The transmittance of the white sub-pixel is weighted based on the brightness gain to obtain the weighted transmittance. The difference between the weighted transmittance and the transmittance of the white sub-pixel is determined as the transmittance of the first primary color sub-pixel in the pixel.

6. The display device according to claim 5, characterized in that, The processor is configured to weight the transmittance of the white sub-pixel based on the luminance gain to obtain a weighted transmittance, including: The product of the brightness gain and the transmittance of the white sub-pixel is determined as the transmittance increment; The weighted transmittance is determined by summing the transmittance increment with the transmittance of the white sub-pixel.

7. The display device according to any one of claims 1 to 6, characterized in that, The processor is also configured to: When the first partition image data is multi-primary color image data, the backlight brightness of the multiple primary colors represented by the first partition image data is used to drive the multiple primary color light sources in the first backlight partition, and the multiple primary color light sources are at least two of red light sources, green light sources and blue light sources. Based on the brightness of each pixel in the first partition image data, the transmittance of multiple primary color sub-pixels and the transmittance of white sub-pixels in each pixel of the first virtual partition in the display screen are determined, so as to simultaneously turn on the multiple primary color sub-pixels and the white sub-pixels. The multiple primary color sub-pixels are sub-pixels corresponding to the colors of multiple primary color light sources.

8. The display device according to claim 7, characterized in that, The primary colors include red, green, and blue; The processor is configured to determine, based on the brightness of each pixel in the first partition image data, the transmittance of multiple primary color sub-pixels and the transmittance of white sub-pixels in each pixel of the first virtual partition in the display screen, including: For each pixel in the first partition image data, based on the red backlight brightness, green backlight brightness, blue backlight brightness, and the brightness of the red sub-pixel, green sub-pixel, and blue sub-pixel in the pixel, the transmittance of the white sub-pixel and the brightness gain of the pixel are determined. The transmittance of the red sub-pixel of the pixel is determined based on the red backlight brightness, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the red sub-pixel in the pixel. The transmittance of the green sub-pixel of the pixel is determined based on the backlight brightness of the green color, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the green sub-pixel in the pixel. The transmittance of the blue sub-pixel of the pixel is determined based on the backlight brightness of the blue sub-pixel, the transmittance of the white sub-pixel, the brightness gain, and the brightness of the blue sub-pixel in the pixel.

9. A display method, characterized in that, A processor for use in a display device, the display device further comprising: The display screen includes an array of pixels, each pixel including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel; A backlight connected to the display screen, the backlight comprising multiple backlight zones; the backlight comprising a red light source, a green light source, and a blue light source; The processor is connected to both the display screen and the backlight. The method includes: Acquire image data of the image to be displayed, the image data including partition image data corresponding to each backlight partition; When the first partition image data is the first primary color image data, the first primary color light source in the corresponding first backlight partition is driven according to the backlight brightness of the first primary color characterized by the first partition image data. The first primary color light source is any one of red light source, green light source and blue light source. For each pixel in the first virtual partition of the display screen, the transmittance of the white sub-pixel in the pixel is determined based on the backlight brightness of the first primary color and the brightness of the first primary color sub-pixel in the pixel; and the brightness gain of the pixel is determined based on the transmittance of the white sub-pixel; the transmittance of the first primary color sub-pixel in the pixel is determined based on the transmittance of the white sub-pixel and the brightness gain, so as to enable the first primary color sub-pixel based on the transmittance of the first primary color sub-pixel and enable the white sub-pixel based on the transmittance of the white sub-pixel; wherein, the first primary color sub-pixel is a sub-pixel corresponding to the color of the first primary color light source.

Images