Backlight control methods, devices, equipment and storage media

Abstract

This application discloses a backlight control method, apparatus, device, and storage medium. Relating to the field of display technology, the method is applied to the backlight control module of a liquid crystal display (LCD) device. The LCD device further includes a motherboard chip and a backlight module, with the backlight control module connected to both. The method includes: acquiring an image to be displayed from the motherboard chip; determining RGB brightness data for each backlight zone in the backlight module based on the image; and generating a backlight control signal synchronized with the image based on the RGB brightness data, thereby controlling the backlight module's RGB backlight based on the backlight control signal. This application enables multi-color backlight control for Mini LED backlit TVs, improving the TV's display effect.

Description

Technical Field

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

[0002] With the continuous upgrading of display technology, Mini LED backlit TVs are gradually becoming the mainstream in the market due to their excellent picture quality.

[0003] Currently, in traditional white Mini LED backlighting solutions, achieving precise light control for, for example, 5000 backlight zones requires the TV system's main chip to have 5000 levels of light control capability. However, if each backlight zone needs independent control of its red, green, and blue light sources, the required number of light control channels increases to three times the number of zones. This causes the light control requirements to exceed the processing capacity of the TV system's main chip, making it difficult to achieve multi-color backlight control for Mini LED backlit TVs.

[0004] Therefore, how to achieve multi-color backlight control for Mini LED backlit TVs to improve the TV display effect is a problem that urgently needs to be solved. Summary of the Invention

[0005] The main objective of this application is to provide a backlight control method, apparatus, device, and storage medium, which aims to achieve multi-color backlight control for Mini LED backlit TVs to improve the TV display effect.

[0006] To achieve the above objectives, this application provides a backlight control method applied to a backlight control module of a liquid crystal display device. The liquid crystal display device further includes a motherboard chip and a backlight module. The backlight control module is connected to both the motherboard chip and the backlight module. The backlight control method includes: The image to be displayed is obtained from the motherboard chip; Based on the image to be displayed, determine the RGB brightness data of each backlight zone in the backlight module; A backlight control signal synchronized with the image to be displayed is generated based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0007] In one embodiment, the step of determining the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed includes: Extract the brightness features of each pixel region in the image to be displayed; Based on the brightness characteristics and the preset partition mapping table, the RGB brightness data of each backlight partition in the backlight module is determined, wherein the partition mapping table includes the image region coordinates corresponding to each backlight partition.

[0008] In one embodiment, the step of determining the RGB brightness data of each backlight zone in the backlight module based on the brightness characteristics and a preset zone mapping table includes: For each backlight zone, the image region corresponding to the backlight zone is determined according to a preset zone mapping table, and the brightness feature of the image region is used as the target brightness feature of the backlight zone. The RGB brightness data of the backlight zone is determined based on the target brightness characteristics.

[0009] In one embodiment, the step of generating a backlight control signal synchronized with the image to be displayed based on each of the RGB brightness data includes: Each of the RGB brightness data is converted into current control parameters; Based on the current control parameters of each backlight zone, a backlight control signal synchronized with the image to be displayed is generated.

[0010] In one embodiment, the liquid crystal display device further includes a constant current plate, and the backlight control module is connected to the backlight module through the constant current plate. The step of performing RGB backlight control on the backlight module based on the backlight control signal includes: The backlight control signal is sent to the constant current board so that the constant current board can control the RGB brightness of each backlight zone in the backlight module based on the backlight control signal.

[0011] In one embodiment, the liquid crystal display device further includes a TCON module, and the backlight control module is connected to the TCON module. The method further includes: The image to be displayed is sent to the TCON module, so that the TCON module can drive the display screen of the liquid crystal display device to display the image; or, The image to be displayed is subjected to local dimming compensation to obtain the compensated image; The compensated image is sent to the TCON module so that the TCON module can drive the display screen of the liquid crystal display device to display the compensated image.

[0012] In one embodiment, the backlight control module includes a TCON unit, the TCON unit being connected to the display screen of the liquid crystal display device, and the method further includes: According to the preset interface protocol between the TCON unit and the display screen, the image to be displayed is encapsulated and sent to the display screen for display; or... The image to be displayed is subjected to local dimming compensation to obtain the compensated image; According to the preset interface protocol, the compensated image is encapsulated and sent to the display screen for display.

[0013] Furthermore, to achieve the above objectives, this application also provides a liquid crystal display device, which includes a backlight control module, a motherboard chip, and a backlight module. The backlight control module is connected to the motherboard chip and the backlight module, respectively. The backlight control module includes: The receiving unit is used to acquire the image to be displayed from the motherboard chip; The processing unit is used to determine the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed. A backlight control unit is used to generate a backlight control signal synchronized with the image to be displayed based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0014] In addition, to achieve the above objectives, this application also proposes an electronic device, the device comprising: a liquid crystal display device, a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the backlight control method as described above.

[0015] In addition, to achieve the above objectives, this application also provides a storage medium, which is a computer-readable storage medium, on which a program for implementing a backlight control method is stored, and the program for implementing the backlight control method is executed by a processor to implement the steps of the backlight control method as described above.

[0016] In addition, to achieve the above objectives, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the backlight control method described above.

[0017] This application provides a backlight control method applied to the backlight control module of a liquid crystal display device. The liquid crystal display device further includes a motherboard chip and a backlight module, with the backlight control module connected to both. The method first obtains an image to be displayed from the motherboard chip, determines the RGB brightness data of each backlight zone in the backlight module based on the image, and then generates a backlight control signal synchronized with the image based on the RGB brightness data of each zone. Finally, RGB backlight control is performed based on this backlight control signal.

[0018] In summary, this application separates the backlight control function from the main chip of the TV system, adding a dedicated backlight control module to perform multi-color backlight control tasks. This avoids the main chip directly bearing the load of three times the number of backlight zones. Specifically, the backlight control module obtains the image to be displayed from the motherboard chip, autonomously determines the RGB brightness data of each backlight zone based on the image, generates a backlight control signal synchronized with the image, and achieves independent and precise control of the red, green, and blue light sources of each backlight zone based on the backlight control signal. Thus, by separating the light control task from the main chip, this application effectively reduces the processing pressure on the motherboard chip and solves the problem of multi-color backlight control being impossible due to the limitations of the main chip's processing power and interface bandwidth. Simultaneously, by ensuring precise synchronization between backlight adjustment and the image to be displayed, the color gamut and dynamic contrast of the Mini LED backlit TV are further improved, enhancing the display quality and meeting users' demands for high-quality display effects. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart illustrating the first embodiment of the backlight control method of this application; Figure 2 This is a schematic diagram of the liquid crystal display device architecture involved in an embodiment of the backlight control method of this application; Figure 3 This is a schematic diagram of the backlight control process according to an embodiment of the backlight control method of this application; Figure 4 This is a schematic diagram of the module structure of the liquid crystal display device of this application; Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the backlight control method in the embodiments of this application.

[0022] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0024] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Currently, in traditional white Mini LED backlighting solutions, achieving precise light control for, for example, 5000 backlight zones requires the TV system's main chip to have 5000 levels of light control capability. However, if each backlight zone needs independent control of its red, green, and blue light sources, the required number of light control channels increases to three times the number of zones. This causes the light control requirements to exceed the processing capacity of the TV system's main chip, making it difficult to achieve multi-color backlight control for Mini LED backlit TVs.

[0026] Therefore, how to achieve multi-color backlight control for Mini LED backlit TVs is a problem that urgently needs to be solved.

[0027] The main solution of this application is: to obtain the image to be displayed from the motherboard chip; to determine the RGB brightness data of each backlight zone in the backlight module according to the image to be displayed; to generate a backlight control signal synchronized with the image to be displayed according to each RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0028] This application separates the backlight control function from the main chip of the TV system, adding a dedicated backlight control module to perform multi-color backlight control tasks. This avoids the main chip directly bearing the load of three times the number of backlight zones. Specifically, the backlight control module obtains the image to be displayed from the motherboard chip, autonomously determines the RGB brightness data of each backlight zone based on the image, generates a backlight control signal synchronized with the image, and achieves independent and precise control of the red, green, and blue light sources of each backlight zone based on the backlight control signal. In this way, by separating the light control task from the main chip, this application effectively reduces the processing pressure on the motherboard chip and solves the problem of not being able to achieve multi-color backlight control due to the limitations of the main chip's processing power and interface bandwidth. At the same time, by ensuring precise synchronization between backlight adjustment and the image to be displayed, the color gamut and dynamic contrast of the Mini LED backlit TV are further improved, the display quality is enhanced, and the user's demand for high-quality display effects is met.

[0029] It should be noted that the execution subject of the backlight control method in various embodiments of this application can be the backlight control module of a liquid crystal display device. A liquid crystal display device refers to a display device that uses a liquid crystal panel as the display element and is equipped with a backlight module; typical products include LCD TVs and LCD monitors. The backlight control module is a dedicated integrated circuit module independent of the motherboard chip, used to execute backlight zoning algorithms and generate backlight control signals. Its core is an image quality chip, which integrates a backlight brightness extraction unit, a zoning mapping unit, and an SPI (Serial Peripheral Interface) signal generation unit. The liquid crystal display device also includes a motherboard chip and a backlight module. The motherboard chip refers to the system on chip (SoC) of the liquid crystal display device, responsible for receiving external video signals, decoding, and front-end processing; it is the core processing device of the entire system. The backlight module refers to the light-emitting component located behind the liquid crystal panel, using Mini LED multi-color light sources, and consisting of multiple independently controlled backlight zones, each containing red (R), green (G), and blue (B) LED light sources. The backlight control module establishes a data path with the motherboard chip through the input interface to receive the image signal to be displayed; at the same time, it establishes a control path with the backlight module through the output interface to send backlight control signals.

[0030] The following description uses the backlight control module as the main execution unit to illustrate this embodiment and the following embodiments.

[0031] Based on this, this application proposes a backlight control method according to a first embodiment, please refer to... Figure 1 The backlight control method includes steps S10 to S30: Step S10: Obtain the image to be displayed from the motherboard chip.

[0032] It should be noted that the motherboard chip and the backlight control module are connected via a V-by-One (Video by One) interface. The motherboard chip receives external video signals through its signal input interface and transmits them to the backlight control module (also known as the backlight image control synchronization module) via its V-by-One output interface. The image to be displayed is the image frame of the external video signal obtained by the backlight control module from the motherboard chip. Furthermore, to accommodate interface differences across different product platforms, the interface between the backlight control module and the motherboard chip is not limited to V-by-One; it can also be replaced with high-speed serial video interfaces such as DP (DisplayPort), LVDS (Low-Voltage Differential Signaling), or MIPI (Mobile Industry Processor Interface), by adjusting the input / output interface types accordingly.

[0033] The backlight control module, as a dedicated unit independent of the motherboard chipset, establishes a physical connection with the motherboard chipset through its V-by-One input interface, which is used to receive image signals. After the motherboard chipset completes image decoding and front-end processing, it continuously sends the raw image signal to be displayed to the backlight control module in frames. The backlight control module receives this signal and temporarily stores it in its internal storage unit as raw data for subsequent backlight algorithm processing. The storage unit of the backlight control module can be one or a combination of DDR (Double Data Rate) memory, SRAM (Static Random-Access Memory), or Flash memory, used for algorithm execution and data caching.

[0034] In one feasible implementation, the motherboard chip uses a MediaTek MT9655, and the backlight control module uses a dedicated image quality chip, the MT9131. The MT9655, through its V-by-One output interface, sends the raw 4K resolution, 60Hz refresh rate image signal in differential signal form to the V-by-One input interface of the MT9131. The MT9131 integrates a video input receiving unit, automatically performing signal equalization, clock recovery, and frame synchronization detection. It writes the received image data into external DDR memory for buffering, preparing a complete frame of image data for subsequent backlight zoning algorithms. This process is completed automatically by hardware without software intervention, ensuring low-latency reception.

[0035] In addition, the LCD display device also includes a power board, and the motherboard chip includes a power management module (hereinafter referred to as the first power management module for distinction). The first power management module is connected to the power board and, under the management of the motherboard chip, is used to control the power output of the power board and realize the overall power-on and power-off logic of the motherboard chip and the TV.

[0036] Step S20: Determine the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed.

[0037] It should be noted that backlight zoning refers to the smallest unit that divides the backlight module into several independent control areas, such as 1000 to 10000 levels of zoning, with each zoning corresponding to a specific area in the image. RGB brightness data refers to the quantized brightness values ​​(e.g., 8-bit or 10-bit precision) of the red, green, and blue colors calculated for each backlight zoning zone. This data directly determines the driving current or PWM (Pulse Width Modulation) duty cycle of the LEDs in that zone, thereby controlling the zone's color and brightness.

[0038] In this embodiment, step S20 may include: Step S201: Extract the brightness features of each pixel region in the image to be displayed; Step S202: Based on the brightness characteristics and the preset partition mapping table, determine the RGB brightness data of each backlight partition in the backlight module, wherein the partition mapping table includes the image region coordinates corresponding to each backlight partition.

[0039] It should be noted that brightness features refer to the quantized values ​​obtained by statistically analyzing the brightness levels of each pixel region in an image, and are the fundamental input parameters for the backlight partitioning algorithm. Specifically, brightness features can include the average brightness of the pixels in the region (the arithmetic mean of the brightness values ​​of all pixels), the maximum brightness (the brightness value of the brightest pixel in the region), the brightness histogram distribution (the percentage of pixels in different brightness ranges), or the weighted brightness (a statistical value weighted according to human eye sensitivity). Among these, average brightness is the most commonly used and computationally efficient feature, suitable for real-time processing scenarios. The preset partitioning mapping table is a lookup table pre-stored in the storage unit. This table records the image region coordinates (e.g., starting pixel coordinates, width, and height) corresponding to each backlight partition, used to establish the spatial correspondence between the image pixel space and the physical backlight partitions.

[0040] The backlight control module includes a backlight brightness extraction unit. The backlight brightness extraction unit parses the received image to be displayed, extracts the brightness features of the image area corresponding to each backlight partition according to the area division defined in the preset partition mapping table, and calculates the RGB brightness data of each backlight partition by combining the preset partition mapping table in the storage unit.

[0041] In this embodiment, step S202 may include: Step S2021: For each backlight partition, determine the image region corresponding to the backlight partition according to the preset partition mapping table, and use the brightness feature of the image region as the target brightness feature of the backlight partition. Step S2022: Determine the RGB brightness data of the backlight zone based on the target brightness characteristics.

[0042] When processing each backlight zone, the backlight control module (image quality chip) first performs spatial mapping using a zone mapping table: based on the current zone number (e.g., zone N), it reads the coordinates of the image region corresponding to that zone from the mapping table. Then, the module extracts the pre-calculated brightness features (e.g., average brightness, maximum brightness) within that image region, using them as the "target brightness feature" for that zone. Finally, based on this target brightness feature and the color information (e.g., average chromaticity) within the image region, the module calculates the required RGB brightness data for that zone using a preset brightness-current conversion model. This process ensures that the light control parameters of each zone strictly correspond to the image content they cover, achieving a spatially consistent mapping from image content to backlight drive parameters, providing precise input for the subsequent generation of backlight control signals synchronized with the image.

[0043] In one feasible implementation, a liquid crystal display device employing the MT9131 image quality chip and 5000 backlight zones is taken as an example. A preset zone mapping table in the storage unit is stored in array form, with each array element corresponding to a backlight zone and containing the coordinates of the image area corresponding to that zone. Assuming the currently processed zone number is N, the zone mapping unit inside the image quality chip reads the image area corresponding to that zone from the mapping table, for example, the upper left corner coordinates (x0, y0) and the lower right corner coordinates (x1, y1). The pixel block size corresponding to this area is 32×32. The backlight brightness extraction unit has previously completed brightness feature extraction for this image area, obtaining the average brightness. and average chromaticity ( , , The partition mapping unit uses these values ​​as the target brightness characteristics for that partition. Subsequently, the unit maps these values ​​according to a preset brightness mapping curve (e.g., Gamma 2.2). Converted to total backlight target brightness Then decompose according to color ratio: ; ; ; Calculated , , This is the RGB brightness data for that partition, stored in an internal register for use in subsequent SPI signal generation. This process is executed sequentially for all 5000 partitions, ultimately obtaining the RGB brightness data for all partitions.

[0044] Step S30: Generate a backlight control signal synchronized with the image to be displayed based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0045] It should be noted that the backlight control signal refers to the physical electrical signal generated based on RGB brightness data and used to drive the constant current board. It is usually a multi-channel SPI signal, and each SPI can carry control parameters for multiple zones. The output time of the backlight control signal is precisely aligned with the display time of the image frame to be displayed, ensuring that the backlight brightness change is synchronized with the image refresh and avoiding image quality problems such as halo and ghosting.

[0046] In this embodiment, step S30 may include: Step S301: Convert each of the RGB brightness data into current control parameters; Step S302: Generate a backlight control signal synchronized with the image to be displayed based on the current control parameters of each backlight zone.

[0047] It should be noted that current control parameters refer to the physical quantities used to drive LED light emission, including PWM duty cycle (expressed as a percentage, ranging from 0% to 100%) or current amplitude (in milliamperes). PWM duty cycle, by controlling the ratio of LED on to off time, adjusts the average brightness and is the most commonly used control method. Current amplitude, on the other hand, directly changes the brightness by adjusting the constant current flowing through the LED, and is suitable for scenarios with higher requirements for color consistency. The backlight control signal refers to the physical electrical signal generated based on the current control parameters and used to drive the constant current board; it can be a multi-channel SPI signal.

[0048] The backlight control module includes a partition mapping unit, which converts RGB brightness data into PWM duty cycle or current amplitude control parameters for the corresponding partition; the backlight control module also includes a signal generation unit, which generates multiple SPI control signals synchronized with the image frame based on the above control parameters.

[0049] In this embodiment, the liquid crystal display device further includes a constant current plate, and the backlight control module is connected to the backlight module through the constant current plate. Step S30 may further include: Step S303: The backlight control signal is sent to the constant current board so that the constant current board can control the RGB brightness of each backlight zone in the backlight module based on the backlight control signal.

[0050] It should be noted that the liquid crystal display device also includes a constant current board, which mainly implements the backlight driving logic. Its input is connected to the multi-channel SPI signal output of the backlight control module, and its output is connected to the backlight module. The multi-channel SPI signals can also be replaced with I²C (Inter-Integrated Circuit), GPIO (General-Purpose Input / Output), or a custom parallel control interface. This application does not impose any restrictions on this, and the constant current board can be flexibly configured according to its receiving capabilities. Based on the received multi-channel SPI signals, the constant current board independently controls the RGB LED current of each backlight zone in the backlight module to achieve real-time adjustment of multi-color backlight in high-zone areas. In addition, the power supply board is also connected to the power management module of the backlight control module (hereinafter referred to as the second power management module for distinction) and the constant current board to provide multiple stable power supplies to the system.

[0051] After generating backlight control signals (such as multiple SPI signals) synchronized with the image frame, the backlight control module (image quality chip) sends these signals to the constant current board through its SPI output interface. Upon receiving the signals, the constant current board first parses the control parameters (such as PWM duty cycle or current amplitude) of each backlight zone through its internal decoding unit, and then uses its built-in LED driver circuit to convert these parameters into precise drive current, which is then output to the RGB LED beads of each zone in the backlight module.

[0052] For example, such as Figure 2The diagram shows the architecture of a liquid crystal display (LCD) device, which includes an LCD screen, a motherboard, a backlight control module, a constant current board, a TCON module, and a power board. The LCD screen displays images and includes a backlight module and a glass substrate. The backlight module uses multi-color Mini LEDs and is located behind the LCD screen to provide backlight illumination. The glass substrate is located in front of the LCD screen to receive drive signals and display images. The motherboard integrates a System-on-a-Chip (SoC) chip and a first power management module. The SoC chip outputs the image signal to be displayed. The backlight control module integrates an image quality chip and a second power management module. The backlight control module is either independently mounted on the motherboard or externally connected to it, and is connected to the SoC chip, the constant current board, and the TCON module. It receives image signals from the SoC chip, processes them using a backlight partitioning algorithm, generates multiple SPI control signals, sends them to the constant current board, and simultaneously sends the screen image signal to the TCON module. The constant current board connects the backlight control module and the backlight module, driving the R / G / B LEDs in each partition of the backlight module to emit light according to the received SPI control signals. The TCON module connects the backlight control module and the glass substrate, converting the received screen image signal into a drive signal recognizable by the glass substrate. The power supply board connects to the main board, the backlight control module, and the constant current board, providing multiple stable power supplies to each module.

[0053] Thus, this embodiment decouples the backlight control function from the motherboard chip, with an independent backlight control module performing the multi-color backlight control task. This module extracts the brightness characteristics of each pixel area based on the image to be displayed, determines the RGB brightness data corresponding to each backlight zone by combining it with a preset zone mapping table, converts it into current control parameters, and generates a backlight control signal synchronized with the image. Finally, a constant current board precisely drives the RGB LEDs of each zone to emit light. This solution eliminates the need for the motherboard chip to directly bear the load of three times the number of backlight zones for the light control channels, breaking through the limitations of the motherboard chip's processing power and interface bandwidth. It achieves independent and precise control of high-zone multi-color Mini LED backlighting, while ensuring that backlight adjustment is synchronized with the image display frame level, effectively improving contrast, color gamut, and dynamic range.

[0054] Furthermore, as Mini LED backlight technology continues to evolve towards ultra-high density, the demand for backlight zones in future television products will increase from the current 5,000 levels to 10,000, 20,000, and even higher levels. To adapt to this trend, the backlight control module in this application has flexible hardware expansion capabilities, specifically manifested in the following two implementation methods.

[0055] In the first feasible implementation, since the core processing unit of the backlight image control synchronization module is the image quality chip, its backlight zoning algorithm processing capability is directly related to its internal computing resources and the number of I / O interfaces. Therefore, when the product needs to support a higher density of backlight zoning, an image quality chip with stronger computing power and more SPI control channels can be selected for replacement and upgrade. For example, the current solution uses an image quality chip that supports 5120 zoning; when the requirement increases to 10000 zoning, it can be replaced with a chip model that supports 10240 zoning, while maintaining hardware interface and software driver compatibility. Because the backlight image control synchronization module adopts a modular design, its peripheral circuits, storage units, and input / output interfaces can all be reused across platforms, and the light control capability can be doubled simply by replacing the core chip.

[0056] In the second feasible implementation, when the light control capability of a single image quality chip reaches its limit, or when the demand cannot be met by a single chip due to factors such as chip supply and cost, two or more backlight image control synchronization modules are set on the motherboard. These modules are connected in series via V-by-One input and output interfaces. Specifically, the first-level backlight image control synchronization module receives the raw image signal from the SoC chip, processes it internally by the image quality chip, and generates corresponding multi-channel SPI signals, which are output to the first set of constant current boards to control certain backlight zones. Simultaneously, the first-level module transmits the raw image signal or its compressed stream to the second-level backlight image control synchronization module. The second-level module receives the image signal, independently completes the algorithm processing for the remaining backlight zones, and outputs multiple SPI signals to the second set of constant current boards. This process continues, allowing N-level cascading to achieve N times the total number of light control channels compared to a single module. This cascaded architecture requires no modification to the SoC chip or replacement with a higher-specification image quality chip. It can linearly expand light control capabilities simply by replicating existing module units, greatly improving the product platform's compatibility and reusability across different models.

[0057] Thus, the embodiments of this application achieve the following: a customizable and scalable hardware platform; low-zone models can utilize low-cost image quality chips, while high-zone models can be flexibly expanded through chip upgrades or module cascading; a single motherboard design can cover multiple product tiers, significantly reducing R&D and material costs; future-oriented design, eliminating the need to wait for next-generation SoC chips to overcome light control bottlenecks, allowing for simultaneous improvement in industry zone density and extending product platform lifecycles; strong compatibility, with each module in the cascading scheme working independently without interference, lossless image signal transmission, and backlight control synchronization accuracy unaffected by cascading levels, meeting the demands of ultra-high-definition and high refresh rate displays. These extended solutions further enhance the applicability and forward-looking nature of the embodiments of this application in the field of high-zone multi-color Mini LED backlight control, broadly covering different product definitions from entry-level to flagship.

[0058] However, when faced with scenarios requiring four-color (R / G / B / W) Mini LED backlight control and the need to achieve independent control of 20,000 total zones, the processing power of a single image quality chip has an upper limit, and different chips have different functional focuses (e.g., the ICD1A3H chip only supports white light control schemes, with a maximum controllable number of zones of 15,000; the ICDA812 chip supports R / G / B multi-color control schemes, but the corresponding maximum number of zones is 15,000, meaning that the number of zones is 5,000 when each color (R / G / B) is independently controlled). Therefore, a single chip selection cannot directly meet the design goal of 20,000 total zones. Therefore, this embodiment adopts a heterogeneous cascaded architecture for image quality chips: The first-stage image quality chip is ICDA812, which receives the raw image signal from the SoC chip MT9655 through the V-by-One input interface. It is responsible for the algorithm processing of R / G / B three-color backlight partitions, internally generating 5000 light control parameters for R / G / B partitions, and outputting them to the corresponding constant current board to drive the first group of backlight modules through multiple SPI signals. At the same time, it transmits the raw image signal or its compressed stream to the next-stage image quality chip through the V-by-One output interface. The second-stage image quality chip is ICD1A3H, which receives the image signal transmitted by ICDA812 through the V-by-One input interface. It is responsible for the algorithm processing of W (white light) backlight partitions, internally generating 15000 light control parameters for white light partitions, and outputting them to the corresponding constant current board to drive the second group of backlight modules through multiple SPI signals. It also sends the image signal to the subsequent TCON module through the V-by-One output interface. Since neither the ICDA812 nor the ICD1A3H has a TCON LESS function, this embodiment adds an independent TCON module at the end of the image quality chip cascade link. A Hisilicon V602 chip is used to receive the image signal transmitted through the ICD1A3H, complete the timing control protocol conversion, and output a screen image signal adapted to the glass substrate to drive the LCD display. For power supply, three independent power management modules are configured to provide mutually isolated and stable power to the motherboard and SoC chip, the first-level image quality chip, the second-level image quality chip, and the TCON module.

[0059] In this way, the heterogeneous cascaded solution achieves an ultra-high total partition control of 20,000 levels, which is unattainable by a single chip, by dividing the tasks of R / G / B multi-color light control and W white light light control. It also has the advantages of functional decoupling, non-interference of algorithms, high light control accuracy, and strong system scalability. It provides a practical and feasible technical path for dealing with complex scenarios such as uneven chip capabilities, diverse color channels, and continuously increasing partition density.

[0060] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description and will not be repeated hereafter. In addition, the liquid crystal display device further includes a TCON module, the backlight control module is connected to the TCON module, and the backlight control method further includes: Step A10: The image to be displayed is sent to the TCON module so that the TCON module can drive the display screen of the liquid crystal display device to display the image to be displayed.

[0061] It should be noted that the TCON (Timing Controller) module is a bridge chip in a liquid crystal display (LCD) device that connects the image processing chip and the liquid crystal glass substrate. The TCON module is responsible for converting the received image signal into the gate driver and source driver signals required by the liquid crystal panel, and generating precise timing control pulses to drive the liquid crystal molecules to deflect and achieve image display. The TCON module is typically connected to the backlight control module through interfaces such as V-by-One, LVDS (Low Voltage Differential Signaling), or mini-LVDS, and its output is directly connected to the glass substrate of the display screen.

[0062] In the absence of a TCON function in the image quality chip, the backlight control module transmits the image signal to the TCON module unchanged via its V-by-One output interface. Upon receiving the image signal, the TCON module converts it into the driving timing and voltage signals required by the LCD panel, outputting them to the glass substrate of the display screen to drive the liquid crystal molecules to deflect and complete the image display. This method is suitable for scenarios where no additional compensation is needed between backlight control and image display. Its advantages include a short signal processing path, low latency, and complete preservation of the original image's quality characteristics.

[0063] Step A20: Perform local dimming compensation on the image to be displayed to obtain the compensated image; Step A30: The compensated image is sent to the TCON module so that the TCON module can drive the display screen of the liquid crystal display device to display the compensated image.

[0064] It should be noted that local dimming compensation refers to a technique that performs pixel-level correction on the image signal based on the actual luminous brightness of each zone of the backlight module. Because the brightness distribution of each area may deviate from the original image content when the backlight zones are controlled independently (for example, if the backlight brightness of a certain zone is low while the corresponding image area is bright, insufficient brightness will occur), local dimming compensation increases the brightness value of the corresponding pixels or performs spatial filtering on adjacent zones to ensure the final display effect matches expectations. This compensation algorithm typically performs pixel-by-pixel calculations based on backlight brightness data (i.e., the RGB brightness data calculated in previous steps) and image content, aiming to eliminate problems such as halos and uneven brightness that may occur due to independent control of the backlight zones.

[0065] In the absence of a TCON function in the image quality chip, the backlight control module (image quality chip) calculates the RGB brightness data of each backlight zone and then uses this data to perform pixel-by-pixel compensation on the original image signal: for each pixel, the RGB value of that pixel is adjusted according to the backlight brightness of its own zone and adjacent zones to offset the impact of backlight brightness distribution on the display effect. The compensated image data is then sent to the TCON module through the V-by-One output interface. The TCON module converts it into a drive signal and outputs it to the display screen. This method achieves coordinated processing of image signals and backlight control signals, which can significantly improve image quality and eliminate visual artifacts that may be caused by zoned backlighting, and is especially suitable for high dynamic range (HDR) content and fine-tuned lighting scenarios.

[0066] In this embodiment, the backlight control module includes a TCON unit, which is connected to the display screen of the liquid crystal display device. The backlight control method of this application further includes: Step B10: According to the preset interface protocol between the TCON unit and the display screen, the image to be displayed is encapsulated and sent to the display screen so that the display screen can display the image to be displayed.

[0067] It should be noted that the TCON unit in the backlight control module refers to the timing control unit integrated within the backlight control module (image quality chip), i.e., a Tcon-less (Timing Controller-less) functional module. This unit replaces the independent TCON chip in traditional solutions, directly performing the protocol conversion from image signals to LCD glass substrate driving signals within the image quality chip. The preset interface protocol refers to the specific signal format required by the display glass substrate, such as V-by-One protocol, mini-LVDS (Low Voltage Differential Signaling) protocol, or point-to-point protocol. These protocols define data encapsulation methods, clock synchronization methods, differential signal level standards, etc., and are physical layer specifications that the glass substrate can directly recognize.

[0068] After the backlight control module (image processing chip) obtains the image to be displayed from the motherboard chip, its internal TCON unit encapsulates the image data according to a pre-agreed interface protocol (such as V-by-One) with the glass substrate: converting parallel pixel data into serial differential signals, inserting horizontal / vertical synchronization signals and control commands, and adding clock embedding and other processing. The encapsulated signal is directly sent to the glass substrate of the display screen through the dedicated output interface of the image processing chip. The receiver built into the glass substrate decodes the signal, extracts the image data and timing information, drives the liquid crystal molecules to deflect, and completes the image display. This method eliminates the need for a separate TCON chip, simplifies the system architecture, reduces material costs and circuit complexity, and shortens the signal transmission path, which helps to reduce latency.

[0069] In one feasible implementation, the motherboard chip uses the MediaTek MT9655 chip, which integrates signal input interface, image decoding, and front-end processing functions. It sends raw image signals to the backlight image control synchronization module via a V-by-One output interface. Simultaneously, the MT9655 chip is connected to the power board via a first power management module, responsible for the overall power supply management. The image quality chip uses the MediaTek MT9131 chip, integrated within the backlight image control synchronization module. It receives image signals from the SoC chip MT9655 via a V-by-One input interface. The MT9131 chip integrates a TCON LESS function, eliminating the need for an additional timing controller chip. It can directly output screen image signal protocols adapted to the glass substrate. Specifically, the first output of its V-by-One output interface is directly connected to the glass substrate, and the output screen image signal is a point-to-point protocol signal directly recognizable by the glass substrate. This eliminates the need for a separate TCON module in traditional solutions, simplifying the system architecture, shortening the signal transmission path, and reducing latency. Meanwhile, the MT9131 chip integrates a backlight zoning algorithm processing unit, which connects to a memory unit (such as DDR chips). It runs backlight extraction, zoning mapping, and SPI signal generation algorithms via RAM. After processing, multiple SPI signals are generated through the second output of the V-by-One output interface and directly sent to the constant current board, enabling independent light control for each R / G / B zone. Since the image output and backlight control signals originate from the same source and frequency, pixel-level backlight synchronization can be achieved, effectively suppressing halos and ghosting. The MT9131 chip's power supply is managed by an independent second power management module, ensuring power isolation and stable operation from the motherboard SoC chip. Both the MT9655 and MT9131 used in this embodiment are mature chip platforms widely used in the television industry, with well-developed hardware and software ecosystems, facilitating the rapid industrialization of this technical solution.

[0070] Step B20: Perform local dimming compensation on the image to be displayed to obtain the compensated image; Step B30: According to the preset interface protocol, the compensated image is encapsulated and sent to the display screen for display.

[0071] After the backlight control module calculates the RGB brightness data of each zone using the backlight zoning algorithm, it further uses this brightness data to perform local dimming compensation on the original image. The compensated image data is then encapsulated by the TCON unit according to a preset interface protocol and sent directly to the display glass substrate through the output interface. This method achieves deep integration of backlight control and image compensation: the backlight brightness data is used both to generate SPI light control signals and to correct image pixel values; both are from the same source and at the same frequency, ensuring compensation accuracy. Since the compensation algorithm and the backlight control signal are both completed by the same image quality chip, the image and backlight are always strictly synchronized, effectively eliminating visual artifacts that may be caused by independent backlight zone control and significantly improving image quality.

[0072] In summary, this application embodiment sets up two image output paths: when the system is configured with an independent TCON module, the backlight control module can directly transmit the image to be displayed to the TCON module, or transmit it after completing local dimming compensation; when the backlight control module integrates a TCON unit, it can directly encapsulate the image into a signal conforming to the display interface protocol for transmission, also supporting both direct transmission and compensated transmission modes. Thus, regardless of the architecture used, the backlight control module can use the calculated backlight zone RGB brightness data to perform pixel-level compensation on the image, ensuring that the image signal and the backlight control signal are from the same source and have the same frequency, thereby achieving frame-level precise synchronization between backlight adjustment and image display.

[0073] In this embodiment, as Figure 3 The diagram illustrates the backlight control process. The LCD display device includes a motherboard, a backlight control module, an LCD screen, a constant current board, and a power board. The motherboard integrates a SoC chip and a first power management module. The SoC chip receives external video signals through a signal input interface and connects to the backlight control module through a V-by-One output interface. The backlight control module is independently configured and integrates an image quality chip, a storage unit, and a second power management module. This module receives image signals transmitted from the SoC chip through a V-by-One input interface. The image quality chip processes the image signals using a backlight zoning algorithm and outputs two signals through the V-by-One output interface: one is a screen image signal, sent to the TCON module on the LCD screen side to drive the glass substrate to display the image; the other is a multi-channel SPI signal, sent to the constant current board. The constant current board controls the R / G / B LED current of each zone in the backlight module according to the received SPI signals, achieving independent adjustment of the multi-color backlight. The power board connects to the first power management module of the motherboard, the second power management module of the backlight control module, and the constant current board, providing multiple stable power supplies to the system. This architecture decouples the backlight control task from the SoC chip through an independent backlight image control synchronization module, achieving precise control of high-zone multi-color Mini LED backlight and frame-level synchronization of image display.

[0074] This application also provides a liquid crystal display device; please refer to... Figure 4 The liquid crystal display device includes a backlight control module, a motherboard chip, and a backlight module. The backlight control module is connected to both the motherboard chip and the backlight module. The backlight control module includes: The receiving unit 10 is used to acquire the image to be displayed from the motherboard chip; Processing unit 20 is used to determine the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed; The backlight control unit 30 is used to generate a backlight control signal synchronized with the image to be displayed based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0075] Optionally, the processing unit 20 is further configured to: Extract the brightness features of each pixel region in the image to be displayed; Based on the brightness characteristics and the preset partition mapping table, the RGB brightness data of each backlight partition in the backlight module is determined, wherein the partition mapping table includes the image region coordinates corresponding to each backlight partition.

[0076] Optionally, the processing unit 20 is further configured to: For each backlight zone, the image region corresponding to the backlight zone is determined according to a preset zone mapping table, and the brightness feature of the image region is used as the target brightness feature of the backlight zone. The RGB brightness data of the backlight zone is determined based on the target brightness characteristics.

[0077] Optionally, the backlight control unit 30 is further configured to: Each of the RGB brightness data is converted into current control parameters; Based on the current control parameters of each backlight zone, a backlight control signal synchronized with the image to be displayed is generated.

[0078] Optionally, the liquid crystal display device further includes a constant current plate, the backlight control module is connected to the backlight module through the constant current plate, and the backlight control unit 30 is further configured to: The backlight control signal is sent to the constant current board so that the constant current board can control the RGB brightness of each backlight zone in the backlight module based on the backlight control signal.

[0079] Optionally, the liquid crystal display device further includes a TCON module, the backlight control module is connected to the TCON module, and the backlight control module further includes a first driving unit, the first driving unit being used for: The image to be displayed is sent to the TCON module, so that the TCON module can drive the display screen of the liquid crystal display device to display the image; or, The image to be displayed is subjected to local dimming compensation to obtain the compensated image; The compensated image is sent to the TCON module so that the TCON module can drive the display screen of the liquid crystal display device to display the compensated image.

[0080] Optionally, the backlight control module includes a TCON unit connected to the display screen of the liquid crystal display device, and the backlight control module further includes a second driving unit, the second driving unit being used for: According to the preset interface protocol between the TCON unit and the display screen, the image to be displayed is encapsulated and sent to the display screen for display; or... The image to be displayed is subjected to local dimming compensation to obtain the compensated image; According to the preset interface protocol, the compensated image is encapsulated and sent to the display screen for display.

[0081] The liquid crystal display device provided in this application, employing the backlight control method described in the above embodiments, can solve the technical problem of how to achieve multi-color backlight control for Mini LED backlit TVs to improve the TV display effect. Compared with the prior art, the beneficial effects of the liquid crystal display device provided in this application are the same as those of the backlight control method provided in the above embodiments, and other technical features in the liquid crystal display device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0082] This application provides an electronic device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the backlight control method in Embodiment 1 above.

[0083] The following is for reference. Figure 5 The diagram illustrates a structural schematic of an electronic device suitable for implementing embodiments of this application. The electronic device in the embodiments of this application may include, but is not limited to, fixed terminals such as televisions, digital TVs, desktop computers, etc. Figure 5The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0084] like Figure 5 As shown, the electronic device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory 1002 or a program loaded from a storage device 1003 into a random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the electronic device. The processing unit 1001, the read-only memory 1002, and the random access memory 1004 are interconnected via a bus 1005. An input / output interface 1006 is also connected to the bus. Typically, the following systems can be connected to the input / output interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. The communication device 1009 allows the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although the diagrams show electronic devices with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0085] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0086] The electronic device provided in this application, employing the backlight control method described in the above embodiments, can solve the technical problem of how to achieve multi-color backlight control for Mini LED backlit TVs to improve the TV display effect. Compared with the prior art, the beneficial effects of the electronic device provided in this application are the same as those of the backlight control method provided in the above embodiments, and other technical features of this electronic device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0087] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0088] The above description is merely a specific 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.

[0089] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the backlight control method in the above embodiments.

[0090] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0091] The aforementioned computer-readable storage medium may be included in an electronic device or may exist independently without being assembled into an electronic device.

[0092] The aforementioned computer-readable storage medium carries one or more programs that, when executed by an electronic device, cause the electronic device to: acquire an image to be displayed from the motherboard chip; determine RGB brightness data of each backlight zone in the backlight module based on the image to be displayed; and generate a backlight control signal synchronized with the image to be displayed based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

[0093] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0094] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0095] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0096] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned backlight control method. This solves the technical problem of how to achieve multi-color backlight control of Mini LED backlit televisions to improve television display effects. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the backlight control method provided in the above embodiments, and will not be repeated here.

[0097] This application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the backlight control method described above.

[0098] The computer program product provided in this application can realize multi-color backlight control of Mini LED backlit TVs to improve the TV display effect. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the backlight control method provided in the above embodiments, and will not be repeated here.

[0099] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A backlight control method, characterized in that, The backlight control method is applied to the backlight control module of a liquid crystal display device, the liquid crystal display device further includes a motherboard chip and a backlight module, the backlight control module is connected to the motherboard chip and the backlight module respectively, and the backlight control method includes: The image to be displayed is obtained from the motherboard chip; Based on the image to be displayed, determine the RGB brightness data of each backlight zone in the backlight module; A backlight control signal synchronized with the image to be displayed is generated based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

2. The backlight control method as described in claim 1, characterized in that, The step of determining the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed includes: Extract the brightness features of each pixel region in the image to be displayed; Based on the brightness characteristics and the preset partition mapping table, the RGB brightness data of each backlight partition in the backlight module is determined, wherein the partition mapping table includes the image region coordinates corresponding to each backlight partition.

3. The backlight control method as described in claim 2, characterized in that, The step of determining the RGB brightness data of each backlight zone in the backlight module based on the brightness characteristics and a preset zone mapping table includes: For each backlight zone, the image region corresponding to the backlight zone is determined according to a preset zone mapping table, and the brightness feature of the image region is used as the target brightness feature of the backlight zone. The RGB brightness data of the backlight zone is determined based on the target brightness characteristics.

4. The backlight control method as described in claim 1, characterized in that, The step of generating a backlight control signal synchronized with the image to be displayed based on the RGB brightness data includes: Each of the RGB brightness data is converted into current control parameters; Based on the current control parameters of each backlight zone, a backlight control signal synchronized with the image to be displayed is generated.

5. The backlight control method as described in claim 1, characterized in that, The liquid crystal display device further includes a constant current plate, and the backlight control module is connected to the backlight module through the constant current plate. The step of performing RGB backlight control on the backlight module based on the backlight control signal includes: The backlight control signal is sent to the constant current board so that the constant current board can control the RGB brightness of each backlight zone in the backlight module based on the backlight control signal.

6. The backlight control method as described in claim 1, characterized in that, The liquid crystal display device further includes a TCON module, and the backlight control module is connected to the TCON module. The method further includes: The image to be displayed is sent to the TCON module, so that the TCON module can drive the display screen of the liquid crystal display device to display the image; or, The image to be displayed is subjected to local dimming compensation to obtain the compensated image; The compensated image is sent to the TCON module so that the TCON module can drive the display screen of the liquid crystal display device to display the compensated image.

7. The backlight control method as described in claim 1, characterized in that, The backlight control module includes a TCON unit, which is connected to the display screen of the liquid crystal display device. The method further includes: According to the preset interface protocol between the TCON unit and the display screen, the image to be displayed is encapsulated and sent to the display screen for display; or... The image to be displayed is subjected to local dimming compensation to obtain the compensated image; According to the preset interface protocol, the compensated image is encapsulated and sent to the display screen for display.

8. A liquid crystal display device, characterized in that, The liquid crystal display device includes a backlight control module, a motherboard chip, and a backlight module. The backlight control module is connected to the motherboard chip and the backlight module, respectively. The backlight control module includes: The receiving unit is used to acquire the image to be displayed from the motherboard chip; The processing unit is used to determine the RGB brightness data of each backlight zone in the backlight module based on the image to be displayed. A backlight control unit is used to generate a backlight control signal synchronized with the image to be displayed based on the RGB brightness data, so as to perform RGB backlight control on the backlight module based on the backlight control signal.

9. An electronic device, characterized in that, The electronic device includes: a liquid crystal display device, a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the backlight control method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the backlight control method as described in any one of claims 1 to 7.

Images