An RGB backlight display apparatus, method, terminal, and storage medium

Abstract

The application discloses an RGB backlight display device, method, terminal and storage medium, the display device comprises: a backlight module is used for outputting corresponding color backlight light to the liquid crystal window in the liquid crystal display panel in the open state; the liquid crystal display panel comprises a plurality of pixel units distributed in an array and a filter corresponding to each pixel unit; a single pixel unit is composed of a red light liquid crystal window, a blue light liquid crystal window and a green light liquid crystal window, the green light liquid crystal window and the blue light liquid crystal window, the red light liquid crystal window are not in the open state at the same time, the transmittance of each liquid crystal window is independently controlled corresponding backlight light, and the filter separates the backlight light transmitted through the liquid crystal window to output RGB primary color light. Therefore, the problem that the red, green and blue penetration spectrum exists in the cross region, the picture is mixed during display, color deviation, color purity reduction and color gamut coverage reduction are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of electronic information, and more particularly to an RGB backlit display device, method, terminal, and storage medium. Background Technology

[0002] RGB tri-color backlit display devices use ordinary LED chips, with tri-color LEDs as the backlight, and LCD glass with RGB tri-color filters to achieve the display. It has a longer brightness retention time and lifespan than OLED (Organic Light Emitting Diode), and can also achieve color calibration and vibrancy close to OLED and Micro LED (Micro Light Emitting Diode) through counting methods.

[0003] When displaying non-red, green, and blue single-color images, RGB tri-color backlit display devices require the activation of two or more RGB LEDs and the corresponding opening of the LCD window. However, because the LCD window of the LCD glass pixel has a wide light transmission band, its matching with the LED tri-color spectrum is poor. There are overlapping areas in the red, green, and blue transmission spectra (e.g., the blue window can transmit blue-green light, and the green window can transmit all three colors of light), resulting in color mixing in the displayed image, causing color shift, reduced color purity, and decreased color gamut coverage.

[0004] Therefore, existing technologies still need improvement and development. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an RGB backlight display device, method, terminal and storage medium to address the above-mentioned defects of the prior art. The aim is to solve the problem that the red, green and blue transmission spectrum of the prior art has an overlapping area, which leads to color mixing in the display, resulting in color deviation, reduced color purity and reduced color gamut coverage.

[0006] The technical solution adopted by this invention to solve the problem is as follows: In a first aspect, embodiments of the present invention provide an RGB backlit display device, wherein the display device includes: A liquid crystal display panel and a backlight module disposed on the back side of the liquid crystal display panel; The backlight module is used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel when it is in the open state. The liquid crystal display panel includes a plurality of pixel units arranged in an array and a filter disposed corresponding to each pixel unit; Each pixel unit is composed of a red liquid crystal window, a blue liquid crystal window, and a green liquid crystal window. The green liquid crystal window is not open at the same time as the blue liquid crystal window and the red liquid crystal window. Each liquid crystal window independently controls the transmittance of the corresponding backlight light. The filter outputs RGB primary color light by separating the backlight light transmitted through the liquid crystal window.

[0007] In one embodiment, the backlight module includes: substrate; A plurality of RGB light-emitting units are arranged in an array on the substrate, and the RGB light-emitting units are used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel when it is in the open state; A drive control circuit is connected to each of the RGB light-emitting units and is used to adjust the brightness and color temperature of each backlight. An optical film assembly is applied to the light-emitting side of the RGB light-emitting unit to uniformly brighten and eliminate uneven brightness and color shift of the backlight.

[0008] In one implementation, the RGB light-emitting unit includes a green light-emitting unit, a blue light-emitting unit, and a red light-emitting unit, wherein the green light-emitting unit, the blue light-emitting unit, and the red light-emitting unit are one or more of the following: unpackaged structure, single-cup packaged structure, double-cup packaged structure, and triple-cup packaged structure.

[0009] In one implementation, the first control time is the opening time of the green liquid crystal window and the green chip, the second control time is the opening time of the blue liquid crystal window and the blue light-emitting unit, the red liquid crystal window and the red light-emitting unit, and the sum of the first control time and the second control time is the display time of a single frame.

[0010] In one implementation, the duration ratio of the first control time and the second control time of each pixel unit is controlled based on the display color of a single frame.

[0011] In one implementation, the red liquid crystal window and the blue liquid crystal window operate independently of each other, and can be opened separately at different times or opened together at the same time.

[0012] In one implementation, the green light chip, blue light chip, and red phosphor in the RGB light-emitting unit are integrated and disposed in the same packaging bracket slot.

[0013] Secondly, embodiments of the present invention also provide an RGB three-color backlight display method, wherein the method includes: The backlight module is configured to output backlight light of the corresponding color to the LCD window in the LCD display panel when it is in the open state; Based on the image to be displayed, control the opening state and opening duration of the red, green, and blue LCD windows in each pixel unit. The green LCD window is not in the open state at the same time as the red and blue LCD windows. The transmittance of the backlight is controlled by the open LCD window, and the backlight is filtered by a filter to achieve the output display of the image to be displayed.

[0014] Thirdly, embodiments of the present invention also provide a terminal, the terminal including a memory and one or more processors; the memory stores one or more programs; the programs include instructions for executing the RGB three-color backlight display method as described above; the processor is used to execute the programs.

[0015] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a plurality of instructions, wherein the instructions are adapted to be loaded and executed by a processor to implement any of the RGB three-color backlight display methods described above.

[0016] The beneficial effects of this invention are as follows: The embodiments of this invention include: a backlight module for outputting backlight light to a liquid crystal display panel; the liquid crystal display panel includes liquid crystal glass, pixel units integrated on the liquid crystal glass in an array, and filters corresponding to each pixel unit. Each pixel unit consists of a red liquid crystal window, a blue liquid crystal window, and a green liquid crystal window. The green liquid crystal window is not simultaneously open with the blue and red liquid crystal windows. Each liquid crystal window independently controls the transmittance of the backlight light. The filters output RGB primary color light by separating the backlight light transmitted through the liquid crystal windows. Because this invention controls the green liquid crystal window to not be simultaneously open with the blue and red liquid crystal windows, avoiding cross-transmission of the red, green, and blue light spectrum, it can effectively solve the problem that existing technologies cannot improve the display quality of RGB backlight display devices at low cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal modules of the RGB backlight display device provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of a pixel unit provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram showing the transmittance of each liquid crystal window to different wavelengths provided in the embodiments of the present invention.

[0021] Figure 4 This is the RGB LED spectrum provided in the embodiments of the present invention.

[0022] Figure 5 This is a schematic diagram showing the overlap between the transmittance of the liquid crystal window and the RGB LED spectrum provided in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the blue light liquid crystal window through blue and green LEDs provided in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the LED spectrum and the transmittance of the liquid crystal window at time T1 provided in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram illustrating the red, green, and blue screen display principle provided in an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram illustrating the display principle of other color images provided in the embodiments of the present invention.

[0027] Figure 10 This is a schematic diagram of mixing colors to produce other colors provided in an embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of a white screen provided in an embodiment of the present invention.

[0029] Figure 12 This is a flowchart illustrating the RGB backlight display method provided in an embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of the terminal provided in the embodiment of the present invention. Detailed Implementation

[0031] This invention discloses an RGB backlight display device, method, terminal, and storage medium. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0032] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0033] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0034] RGB tri-color backlit display devices use ordinary LED chips, with tri-color LEDs as the backlight, and LCD glass with RGB tri-color filters to achieve the display. It has a longer brightness retention time and lifespan than OLED (Organic Light Emitting Diode), and can also achieve color calibration and vibrancy close to OLED and Micro LED (Micro Light Emitting Diode) through counting methods.

[0035] When displaying non-red, green, and blue monochromatic images, RGB tri-color backlit displays require the activation of two or more RGB LEDs and the corresponding opening of the LCD window. However, due to the wide wavelength range of light that the LCD glass pixels can transmit, the matching with the LED tri-color spectrum is poor. There are overlapping areas in the red, green, and blue transmission spectra (e.g., the blue window can transmit blue-green light, and the green window can transmit all three colors), leading to color mixing, color shift, reduced color purity, and decreased color gamut coverage. Although color mixing can be resolved through three-dimensional light control and algorithm chips, this requires separate emission of the RGB primary colors, increasing LED costs, tripling the number of drivers, exponentially increasing the computational power required for the algorithm, and adding algorithm chip boards, resulting in a significant increase in overall cost.

[0036] To address the aforementioned deficiencies in existing technologies, this invention provides an RGB backlight display device, method, terminal, and storage medium. The display device includes: a backlight module for outputting backlight light of a corresponding color to an open liquid crystal window in a liquid crystal display panel; the liquid crystal display panel includes multiple pixel units arranged in an array and filters corresponding to each pixel unit; each pixel unit consists of a red liquid crystal window, a blue liquid crystal window, and a green liquid crystal window, wherein the green liquid crystal window is not simultaneously open with the blue and red liquid crystal windows, and each liquid crystal window independently controls the transmittance of its corresponding backlight light; the filters separate the backlight light transmitted through the liquid crystal windows to output RGB primary color light. Therefore, this effectively solves the problem in existing technologies where the red, green, and blue transmission spectra overlap, leading to color mixing, color shift, reduced color purity, and decreased color gamut coverage during display.

[0037] like Figure 1 As shown, the display device includes: Liquid crystal display panel 02 and backlight module 01 disposed on the back side of liquid crystal display panel 02; The backlight module 01 is used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel 02 when it is in the open state. The liquid crystal display panel 02 consists of a plurality of pixel units 021 arranged in an array and a filter 022 corresponding to each pixel unit 021; Each pixel unit 021 is composed of a red liquid crystal window 0211, a blue liquid crystal window 0212, and a green liquid crystal window 0213. The green liquid crystal window 0213 is not simultaneously open with the blue liquid crystal window 0212 and the red liquid crystal window 0211. Each liquid crystal window independently controls the transmittance of the corresponding backlight light. The filter 022 outputs RGB primary color light by separating the backlight light transmitted through the liquid crystal window.

[0038] The backlight module 01 is used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel 02 when it is in the open state.

[0039] The RGB display device adopts a three-layer collaborative architecture of backlight supply, pixel light control, and color separation output. Through the functional division of the LCD panel 02 and the backlight module 01, it achieves a display effect with high brightness and high color fidelity, as detailed below: The backlight module 01 is located on the back side of the LCD panel 02. It outputs a suitable backlight and ensures the uniformity of the light output to avoid problems such as bright spots and dark areas in the subsequent display screen due to differences in light emission. This provides stable input conditions for the precise light control of the LCD panel 02.

[0040] The liquid crystal display panel 02 employs an integrated design of arrayed pixel units 021 and corresponding color filters 022 for each pixel unit 021, achieving pixel-level light and color control. The liquid crystal display panel 02 uses liquid crystal glass as a substrate and integrates multiple pixel units 021 arranged in an array, achieving pixel-level light and color control. The display resolution is determined by the array density. Figure 2 As shown, each pixel unit 021 is composed of a red liquid crystal window 0211, a blue liquid crystal window 0212, and a green liquid crystal window 0213. The three windows operate independently, utilizing the electro-optic properties of liquid crystal molecules (the molecular arrangement changes after energization, thereby adjusting the polarization state and transmittance of light) to control the transmission ratio of the corresponding color light in the backlight. For example... Figure 3 , Figure 4 As shown, pixel unit 021 achieves different color display effects by controlling the switching of three liquid crystal windows. For example, when a red pixel needs to be displayed, the red liquid crystal window 0211 increases the light transmittance, while the blue and green liquid crystal windows 0213 decrease the light transmittance, thereby achieving preliminary control over the brightness and base color of a single pixel.

[0041] The filter 022 is used to achieve precise color separation. It corresponds one-to-one with each pixel unit 021, and each filter 022 only allows specific primary color light to pass through (e.g., the filter 022 corresponding to the red light LCD window 0211 only allows red light to pass through, and the same applies to the blue and green light filters). By setting the filter 022, stray color light that may still exist after passing through the LCD window can be effectively filtered out, avoiding color shift caused by the mixing of different colors, and ensuring that each pixel unit 021 ultimately outputs pure RGB primary color light.

[0042] Ultimately, by superimposing the RGB three-color light in the arrayed pixel unit 021 according to different brightness ratios, a full-color image can be formed on the liquid crystal display panel 02. Not only does it achieve pixel-level brightness control through independent liquid crystal windows to ensure the clear presentation of image details, but it also improves color reproduction accuracy with the help of the color separation function of the filter 022, meeting the needs of various scenarios with high requirements for display image quality (such as high-definition display devices, smart terminal screens, etc.). At the same time, the overall architecture has the advantages of high integration and strong display stability.

[0043] In the aforementioned RGB backlit display device, the backlight module 01 is RGB three-color, and the filter 022 is also RGB three-color. When the screen needs to display colors other than red, green, and blue, two or more RGB LEDs and LCD windows need to be turned on. However, the LCD window of the pixel unit 021 on the LCD glass can pass through a wide range of light wavelengths, resulting in poor matching with the three-color spectrum of the LEDs (e.g., ...). Figure 5 As shown), there is an intersection region in the red, green, and blue transmittance spectra. Figure 6As shown, when the blue LCD window 0212 is open, the light wavelengths that can pass through cover both blue and green light; when the green LCD window 0213 is open, all three colors of light—red, green, and blue—can pass through; and when the red LCD window 0211 is open, only red and green light can pass through. Therefore, the light passing through the red LCD window 0211 is not only red light but also a mixture of other colors, and the same applies to the blue and green LCD windows 0213. Ultimately, this leads to color shift problems when displaying images other than red, green, and blue, resulting in color distortion and reduced color purity and color gamut coverage.

[0044] To address this issue, this method configures the backlight module 01 to output backlight light of the corresponding color to the open LCD windows in the LCD panel 02, and sets the green LCD window 0213 to be in an unopened state simultaneously with the blue LCD window 0212 and the red LCD window 0211. Specifically, when the green LCD window 0213 and the green light source in the backlight module 01 are open, the blue LCD window 0212, the red LCD window 0211, and the blue and red light sources in the backlight module 01 are normally off; conversely, when the blue LCD window 0212, the red LCD window 0211, and the blue and red light sources in the backlight module 01 are open, the green LCD window 0213 and the green light source in the backlight module 01 are normally off. When the red LCD window 0211 and the blue LCD window 0212 are open, the red LCD window 0211 can only transmit red backlight light; the blue LCD window 0212 can only transmit blue backlight light. Because the red and blue transmission spectrum bands of the LCD panel are far apart and have no overlapping areas, there is no color crosstalk problem. Figure 7 As shown; only the green light source and green LCD window 0213 are in the open state, while the red light source, blue light source, red LCD window 0211, and blue LCD window 0212 are in the closed state. There is no interference from other color light sources, and no color crosstalk problem. Figure 8 As shown, this eliminates the color shift and low color gamut problems caused by the crossover area of ​​the RGB transmission spectrum of the LCD panel, thereby improving the display quality.

[0045] In one implementation, the backlight module 01 includes: substrate; A plurality of RGB light-emitting units are arranged in an array on the substrate, and the RGB light-emitting units are used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel 02 when it is in the open state; A drive control circuit is connected to each of the RGB light-emitting units and is used to adjust the brightness and color temperature of each backlight. An optical film assembly is applied to the light-emitting side of the RGB light-emitting unit to uniformly brighten and eliminate uneven brightness and color shift of the backlight.

[0046] Fix the substrate and solder or mount several RGB light-emitting units (including red, green and blue monochrome light-emitting elements) onto the substrate surface according to the preset array layout to ensure that the position of each light-emitting unit is accurate and corresponds one-to-one with the pixel unit 021 of the liquid crystal display panel 02, laying the foundation for subsequent accurate light supply; at the same time, connect the driving control circuit to each RGB light-emitting unit through wires or flexible circuit boards to ensure circuit conduction.

[0047] An optical film assembly is covered on the light-emitting side of the RGB light-emitting unit. The film assembly needs to be precisely aligned with the substrate and the light-emitting unit to ensure that the backlight light output by all light-emitting units can enter the film assembly. The film assembly performs preliminary light homogenization through the synergistic effect of the multi-layer film structure, eliminating bright spots emitted by individual light-emitting units. At the same time, the brightness enhancement layer improves light utilization and reduces light loss.

[0048] The drive control circuit is activated. Based on the display requirements of the LCD panel 02 (such as screen brightness and color temperature settings), the drive circuit outputs control signals to each RGB light-emitting unit to independently adjust the brightness of red, green, and blue monochromatic light, so that the three colors are mixed in the target ratio to achieve the required color temperature (such as cool white light and warm white light). At the same time, the drive circuit monitors the working status of the light-emitting unit in real time to avoid uneven overall brightness caused by the brightness decay of a single unit.

[0049] After being driven and adjusted, the RGB backlight light enters the optical film group, which further homogenizes the light to eliminate dark areas caused by gaps in the light-emitting unit array. At the same time, the color shift correction layer filters out stray light to ensure uniform color of the output light. Finally, the optimized backlight light is precisely projected onto the LCD panel to provide a stable light source of the corresponding colors for the red, green, and blue LCD windows 0212 that are in the open state, ensuring uniform brightness and accurate color of the displayed image.

[0050] In one implementation, the RGB light-emitting unit includes a green light-emitting unit, a blue light-emitting unit, and a red light-emitting unit. The green (G) light-emitting unit is not simultaneously turned on with the blue (B) light-emitting unit and the red (R) light-emitting unit. The green, blue, and red light-emitting units can be one or more of the following structures: unpackaged, single-cup packaged, double-cup packaged, or triple-cup packaged. The structure of the RGB light-emitting unit can be selected according to requirements. For example, the green light-emitting unit can be set to an unpackaged structure, and the blue and red light-emitting units can be set to a double-cup packaged structure, or each can be set to a single-cup packaged structure; or all three light-emitting units can be set to an unpackaged structure, or integrated into a single-cup packaged structure, or set to a triple-cup packaged structure, etc. The RGB light-emitting unit can use ordinary RGB chips, such as red, blue, and green chips. The manufacturing process is simple, there is no significant price increase, and the manufacturing process of ordinary LEDs can be used. Furthermore, ordinary LED chips have long brightness and lifespan.

[0051] In one implementation, the green light chip, blue light chip, and red phosphor in the RGB light-emitting unit are integrated within the same packaging bracket slot. The green and blue light-emitting units in the RGB light-emitting unit utilize green and blue light chips respectively to ensure high primary color purity. The red light-emitting unit employs a cost-balanced solution using red phosphor excitation. This approach improves backlight color gamut coverage, reduces color shift to optimize color performance, and replaces high-cost R chips with R phosphors. Single-cup integration simplifies packaging and module assembly processes, reducing material and production costs. Furthermore, the single-cup structure optimizes heat dissipation efficiency, reduces the light decay difference between the G and B chips and the R phosphor, extends the light source lifespan, and ensures long-term stable display colors, balancing display performance, cost control, and reliability.

[0052] In one implementation, the first control time is the opening time of the green LCD window 0213 and the green chip, and the second control time is the opening time of the blue LCD window 0212 and the blue light-emitting unit, and the red LCD window 0211 and the red light-emitting unit. The first control time, the second control time, each LCD window, and each light-emitting unit cooperate with each other to achieve image display by utilizing the visual persistence effect of the human eye. The sum of the first control time and the second control time is the display time of a single frame, which matches the duration of the visual persistence effect. If the RGB light-emitting unit does not use green, blue, and red chips, the first and second control times can be the control times of the light emitters corresponding to the green, blue, and red chips in the RGB light-emitting unit. Let the first control time be T1 and the second control time be T2, then T1 + T2 = one frame time, i.e., (T1 + T2) / frame time = 100%.

[0053] In one implementation, the duration ratio of the first control time and the second control time of each pixel unit 021 is controlled based on the display color of a single frame. T1 and T2 can be freely adjusted from 0 to 100%. Different chromatic color effects can be achieved by adjusting T1 and T2, such as... Figure 10 The blue and green color mixing shown is as follows: In frame 1, when T1 < T2, a greenish cyan can be mixed; in frame 2, when T1 = T2 = 50% of the frame time, a cyan can be mixed; in frame 3, when T1 > T2, a bluish cyan can be mixed.

[0054] In one implementation, during the second control time, the working states of the red liquid crystal window 0211 and the blue liquid crystal window 0212 are independent of each other, and they can be opened separately at different times or opened together during the same time period.

[0055] Example 1: There is an RGB backlight display device with an image signal output frame rate of 60 frames / second (i.e., the basic frame rate of the displayed image is 60 frames), and it is equipped with a 120Hz high refresh rate LCD panel (the physical refresh rate of the panel is 120 frames / second, which is twice the frame rate of the displayed image).

[0056] Since the panel refresh rate is twice the display frame rate, each time the panel displays one basic frame (corresponding to one frame in a 60-frame signal), it needs to complete two physical refresh actions simultaneously. These two refresh times can be defined as frame T1 and frame T2, respectively, and the durations of frame T1 and frame T2 are equal (T1 = T2, together constituting a complete display cycle of one basic frame). During the panel refresh process, frame T1 and frame T2 can be selected to carry the display information of the basic frame at 0%, 50%, or 100% of their respective proportions, depending on display requirements (i.e., the content of a single basic frame can be displayed only during frame T1, only during frame T2, or simultaneously during both frame T1 and frame T2).

[0057] Specifically, regarding the display scenarios of different color fields: (e.g.) Figure 8 (As shown) When displaying a red or blue field, the percentage of frames displayed in time T1 (i.e., the proportion of time T1 carrying information for that color field) can be set to 50% or 100%; when displaying a green field, the percentage of frames displayed in time T2 (i.e., the proportion of time T2 carrying information for the green field) can be set to 50% or 100%; when displaying other colors, such as... Figure 9 , 10 As shown in Figure 11, this differentiated frame time ratio adjustment allows for precise optimization of the RGB three-color field display effect.

[0058] Example 2: There is an RGB backlight display device with an image signal output frame rate of 60 frames / second (i.e., the basic frame rate of the displayed image is 60 frames), and it is equipped with a 240Hz high refresh rate LCD panel (the physical refresh rate of the panel is 240 frames / second, which is 4 times the frame rate of the displayed image).

[0059] Since the panel refresh rate is four times the display frame rate, each time the panel displays one basic frame (corresponding to one frame in a 60-frame signal), it needs to complete four physical refresh actions simultaneously. The time for these four refreshes can be defined as frame time T1 and frame time T2, respectively. During the panel refresh process, frame time T1 and frame time T2 can be selected to carry the display information of the basic frame at a percentage of 0%, 25%, 50%, 75%, or 100% according to display requirements (that is, the content of a single basic frame can be displayed only in frame time T1, only in frame time T2, or simultaneously in frame time T1 and frame time T2).

[0060] When displaying a specific image, the proportions of T1 and T2 can be adjusted according to the colors of the image. For example, when displaying a red, green, and blue image, such as... Figure 7 As shown; when displaying other colors, such as Figure 9 , 10 As shown in Figure 11, the color mixing effect of the image can be adjusted by the time ratio of T1.

[0061] Example 3: An RGB backlit display device exists, with an image signal output frame rate of 60 frames per second (i.e., the basic frame rate of the displayed image is 60 frames per second), and is equipped with an unlimited high frame rate, high refresh rate liquid crystal display panel. Because the frame rate of the liquid crystal display panel is infinitely high, T1 / frame time can be 0%–100% of the frame time. When displaying red, green, and blue field images, such as… Figure 8 As shown. When displaying other colors, such as Figure 9 , 10 As shown in Figure 11, the color mixing effect of the image can be adjusted by the time ratio of T1.

[0062] Based on the above embodiments, the present invention also provides an RGB three-color backlight display method, such as... Figure 12 As shown, the method includes: Step S100: Configure the backlight module to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel that is in the open state; Step S200: Based on the screen to be displayed, control the opening state and opening duration of the red liquid crystal window, green liquid crystal window and blue liquid crystal window in each pixel unit, wherein the green liquid crystal window is not in the open state at the same time as the red liquid crystal window and the blue liquid crystal window. Step S300: Control the transmittance of the backlight through the open LCD window, and filter the backlight through a filter to achieve the output display of the image to be displayed.

[0063] Based on the above embodiments, the present invention also provides a terminal, the principle block diagram of which can be as follows: Figure 13 As shown, the terminal includes a processor, memory, network interface, and display screen connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements an RGB three-color backlight display method. The display screen can be a liquid crystal display (LCD) or an e-ink display.

[0064] Those skilled in the art will understand that Figure 13 The schematic diagram shown is merely a partial structural diagram related to the present invention and does not constitute a limitation on the terminal to which the present invention is applied. A specific terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0065] In one implementation, the terminal's memory stores one or more programs, and these programs are configured to be executed by one or more processors, and the programs contain instructions for performing an RGB three-color backlight display method.

[0066] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0067] In summary, this invention discloses an RGB backlight display device, method, terminal, and storage medium. The display device includes: a backlight module for outputting backlight light of a corresponding color to an open liquid crystal window in a liquid crystal display panel; the liquid crystal display panel includes multiple pixel units arranged in an array and a filter corresponding to each pixel unit; each pixel unit consists of a red liquid crystal window, a blue liquid crystal window, and a green liquid crystal window, wherein the green liquid crystal window is not simultaneously open with the blue and red liquid crystal windows, and each liquid crystal window independently controls the transmittance of its corresponding backlight light; the filter outputs RGB primary color light by separating the backlight light transmitted through the liquid crystal window. Therefore, this invention effectively solves the problem of overlapping regions in the red, green, and blue transmission spectra of existing technologies, which leads to color mixing, color shift, reduced color purity, and decreased color gamut coverage during display.

[0068] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An RGB backlit display device, characterized in that, The display device includes: A liquid crystal display panel and a backlight module disposed on the back side of the liquid crystal display panel; The backlight module is used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel when it is in the open state. The liquid crystal display panel includes a plurality of pixel units arranged in an array and a filter disposed corresponding to each pixel unit; Each pixel unit is composed of a red liquid crystal window, a blue liquid crystal window, and a green liquid crystal window. The green liquid crystal window is not open at the same time as the blue liquid crystal window and the red liquid crystal window. Each liquid crystal window independently controls the transmittance of the corresponding backlight light. The filter outputs RGB primary color light by separating the backlight light transmitted through the liquid crystal window.

2. The RGB backlight display device according to claim 1, characterized in that, The backlight module includes: substrate; A plurality of RGB light-emitting units are arranged in an array on the substrate, and the RGB light-emitting units are used to output backlight light of the corresponding color to the liquid crystal window in the liquid crystal display panel when it is in the open state; A drive control circuit is connected to each of the RGB light-emitting units and is used to adjust the brightness and color temperature of each backlight. An optical film assembly is applied to the light-emitting side of the RGB light-emitting unit to uniformly brighten and eliminate uneven brightness and color shift of the backlight.

3. The RGB backlight display device according to claim 2, characterized in that, The RGB light-emitting unit includes a green light-emitting unit, a blue light-emitting unit, and a red light-emitting unit, wherein the green light-emitting unit, the blue light-emitting unit, and the red light-emitting unit are one or more of the following: unpackaged structure, single-cup packaged structure, double-cup packaged structure, and triple-cup packaged structure.

4. The RGB backlight display device according to claim 3, characterized in that, The first control time is the opening time of the green liquid crystal window and the green light-emitting unit, and the second control time is the opening time of the blue liquid crystal window and the blue light-emitting unit, the red liquid crystal window and the red light-emitting unit. The sum of the first control time and the second control time is the display time of a single frame.

5. The RGB backlight display device according to claim 4, characterized in that, The duration ratio of the first control time and the second control time of each pixel unit is based on the display color control of a single frame.

6. The RGB backlight display device according to claim 5, characterized in that, During the second control time, the working states of the red liquid crystal window and the blue liquid crystal window are independent of each other, and they can be opened separately at different times or opened together at the same time.

7. The RGB backlight display device according to claim 2, characterized in that, The green light chip, blue light chip, and red phosphor in the RGB light-emitting unit are integrated and housed in the same packaging bracket slot.

8. A method for displaying RGB three-color backlight, characterized in that, The method is implemented based on the RGB three-color backlight display device according to any one of claims 1-7, and the method includes: The backlight module is configured to output backlight light of the corresponding color to the LCD window in the LCD display panel when it is in the open state; Based on the image to be displayed, control the opening state and opening duration of the red, green, and blue LCD windows in each pixel unit. The green LCD window is not in the open state at the same time as the red and blue LCD windows. The transmittance of the backlight is controlled by the open LCD window, and the backlight is filtered by a filter to achieve the output display of the image to be displayed.

9. A terminal, characterized in that, The terminal includes a memory and one or more processors; the memory stores one or more programs; the programs contain instructions for executing the RGB three-color backlight display method as described in claim 8; the processors are used to execute the programs.

10. A computer-readable storage medium storing a plurality of instructions thereon, characterized in that, The instructions are loaded and executed by the processor to implement the steps of the RGB three-color backlight display method as described in claim 8.

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