Display device

Abstract

The utility model relates to a display device which comprises a display panel, a distribution circuit, a backlight assembly and a controller, the backlight assembly is located on the side away from a display face of the display panel, and the distribution circuit comprises at least one data transmission path which is correspondingly connected with at least one driving set of the backlight assembly. The controller is configured to output backlight driving data to the distribution circuit so as to transmit the received backlight driving data to the connected driving group through a data transmission path of the distribution circuit, so that the driving group drives the connected light-emitting component to provide backlight; the controller is further configured to output the display data to the display panel such that the display panel displays a picture. Compared with a complex circuit structure of a backlight controller, normal backlight display of the display equipment can be guaranteed through the controller with enough strong operational capability and the distribution circuit with lower cost, the circuit structure is simplified, meanwhile, the backlight controller with higher cost does not need to be applied, the cost is reduced, and the application range of the display equipment is widened.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] A display device is a device that displays images and / or user interfaces. A display device typically includes a display panel and a backlight source. The backlight source typically provides backlighting under the control of a backlight controller, and the display panel typically displays images and / or user interfaces when the backlight source provides backlighting.

[0003] However, the cost of the backlight controller is high, which increases the cost of backlight driving and limits the application of display devices. Utility Model Content

[0004] The embodiments of the present application provide a display device that can reduce the cost of backlight driving and expand the application range of the display device.

[0005] Some embodiments of the present application provide a display device, the display device comprising:

[0006] Display panel;

[0007] distribution circuits;

[0008] a backlight assembly, located on a side away from the display surface of the display panel and connected to the distribution circuit;

[0009] a controller, connected to the display panel and the distribution circuit, respectively, and configured to output backlight driving data to the distribution circuit based on image data, and transmit the backlight driving data to the backlight assembly through the distribution circuit; and further configured to output display data to the display panel based on the image data, so that the display panel displays an image;

[0010] Wherein, the backlight assembly includes:

[0011] at least one light-emitting component;

[0012] At least one driving group, each driving group being connected to at least one light-emitting component, and different driving groups being connected to different light-emitting components;

[0013] Wherein, the distribution circuit includes:

[0014] At least one data transmission path is correspondingly connected to the at least one driving group, and the data transmission path is configured to transmit the backlight driving data to the connected driving group, so that the driving group drives the connected light-emitting component to provide backlight.

[0015] Technical Effect: The display device includes a display panel, a distribution circuit, a backlight assembly, and a controller. The backlight assembly is located on a side of the display surface away from the display panel and includes at least one light-emitting component and at least one driver group, each driver group being connected to at least one light-emitting component. The distribution circuit includes at least one data transmission path connected to the at least one driver group. The controller is configured to output backlight driving data to the distribution circuit, so that the received backlight driving data is transmitted to the connected driver group via the data transmission path of the distribution circuit, so that the driver group drives the connected light-emitting component to provide backlight. The controller is also configured to output display data to the display panel, so that the display panel displays an image. On the one hand, the controller has the function of computing and acquiring display data. Usually, the computing and processing capabilities of controllers with this function are very powerful, and there is redundancy in the computing and processing functions. The computing and acquiring process of the backlight driving data of the backlight controller in the related art is carried out in the controller, which can realize the effective utilization of the computing and processing functions of the controller and improve the effective utilization of computing resources. On the other hand, the distribution circuit can separate the data transmission and other operations that require high-frequency support of the backlight controller in the related art for processing, thereby reducing the controller's demand for the main frequency of this embodiment. The distribution circuit and the processing process of the controller in this embodiment are more targeted, and the combined cost is lower than the cost of the controller in the related art that has high requirements for the main frequency and data processing computing power. Therefore, compared with the complex circuit structure of the backlight controller, this embodiment can ensure the normal display backlight of the display device through a controller with sufficiently powerful computing power and a low-cost distribution circuit, simplifying the circuit structure. At the same time, there is no need to apply a high-cost backlight controller, reducing costs and broadening the application range of the display device.

[0016] In some embodiments, the distribution circuit comprises:

[0017] a data receiving module connected to the controller and configured to receive at least one backlight driving data output by the controller;

[0018] At least one data transmission module, each of which is connected to the data receiving module to form the data transmission path, and the data transmission module is configured to transmit the backlight driving data to the driving group after receiving the backlight driving data.

[0019] In the above technical solution, the data receiving module of the distribution circuit is arranged between the controller and multiple data transmission modules, and each data transmission module is arranged between the data receiving module and the driving group. The data transmission path composed of the data receiving module and the data transmission module can distribute the backlight driving data received by the distribution circuit according to a preset data transmission order to achieve faster response time; the controller only needs to distribute the backlight driving data to each distribution circuit, which can reduce the workload of the controller in distributing the backlight driving data and improve the backlight driving data distribution efficiency of the display device.

[0020] In some embodiments, the number of the data transmission modules is multiple;

[0021] The data receiving module is configured to receive a plurality of the backlight driving data, and transmit the backlight driving data to the corresponding data transmission module each time the backlight driving data is received according to the timing of receiving the backlight driving data.

[0022] In the above technical solution, each time the data receiving module receives backlight driving data, it immediately transmits the data to the corresponding data transmission modules according to the reception sequence. In this way, once the data reception of the data transmission module is completed, it is sent out immediately, forming a receive-and-send architecture, which minimizes data delay and avoids data transmission delays and resource waste.

[0023] In some embodiments, the number of the data transmission modules is multiple;

[0024] In which, the data transmission module is also configured to receive a frame start signal, and read the data transmitted by the data receiving module after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal; or transmit the received backlight driving data to the connected driving group after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal.

[0025] In the above technical solution, the accurate reading time or transmission time of each data transmission module is determined by the delay time corresponding to each data transmission module, thereby determining the light-emitting time of the driving group corresponding to the data transmission module to drive the light-emitting component, which can ensure that each light-emitting component in the backlight component can delay lighting.

[0026] In some embodiments, a plurality of the data transmission modules receive the frame start signal simultaneously, and different data transmission modules have different delay durations.

[0027] In the above technical solution, on the one hand, the different delay durations of different data transmission modules can ensure the phase delay of each data transmission module, cooperate with different driver groups to complete the backlight scanning function, and achieve the delay of backlight lighting under the condition that the AM driver chip does not have a phase delay function. On the other hand, the different delay durations of different data transmission modules can stagger the time when different data transmission modules obtain backlight drive data. This eliminates the need to install a large-capacity storage unit in the distribution circuit to ensure delay consistency, improves the utilization rate of the storage unit, reduces the storage unit capacity, and reduces costs.

[0028] In some embodiments, the distribution circuit further comprises:

[0029] The synchronization modules are respectively connected to the plurality of data transmission modules and are configured to output the frame start signal to each of the data transmission modules when a synchronization signal is received.

[0030] In the above technical solution, the synchronization module outputs a frame start signal to each data transmission module, thereby enabling the transmission timing of each connected data transmission module to be regulated.

[0031] In some embodiments, the driving group is further configured to detect the power-on status of the connected light-emitting components and output a feedback signal representing the power-on status to the data transmission module;

[0032] The display device further includes:

[0033] a power supply circuit, connected to the light-emitting component and configured to provide a power supply signal to the light-emitting component;

[0034] Wherein, the distribution circuit further includes:

[0035] The voltage control module is connected to each of the data transmission modules and is configured to receive the feedback signal transmitted by the data transmission module and output a control signal to the power supply circuit based on the feedback signal to control the power supply circuit to adjust the parameter value of the power supply signal.

[0036] In the above technical solution, the distribution circuit also receives a feedback signal related to the power-on status of the light-emitting component detected by the driver group, and outputs a control signal to the power supply circuit based on the feedback signal to adjust the voltage value of the power supply electrical signal output by the power supply circuit, thereby realizing voltage control of the power supply circuit through the distribution circuit. When there are many light-emitting components, the amount of data in the feedback signal is large, and the main frequency required for the device receiving the feedback signal is relatively high. Since the main frequency set by the distribution circuit for backlight drive data transmission is relatively high, it can support the transmission requirements of the feedback signal without increasing the cost. Compared with realizing the voltage regulation control of the power supply circuit through the controller, the distribution circuit separates the voltage regulation control process from the controller, which can reduce the controller's demand for the main frequency and reduce the cost of the display device.

[0037] In some embodiments, the control signal includes a first control signal and a second control signal, the first control signal instructs the power supply circuit to output the power supply signal after boosting the voltage, and the second control signal instructs the power supply circuit to output the power supply signal after reducing the voltage; wherein the voltage control module is configured to output the first control signal when the feedback signal feeds back that the state of at least one of the light-emitting components is in an undervoltage state; and output the second control signal when the feedback signal feeds back that the state of each of the light-emitting components is in an overvoltage state.

[0038] In the above technical solution, the driving group detects the power-on status of the light-emitting component. When the light-emitting component is in an undervoltage state, a feedback signal indicating the undervoltage of the light-emitting component is promptly transmitted to the data transmission module. This allows the voltage control module to promptly feedback the undervoltage condition of the light-emitting component to the power supply circuit, and then the power supply circuit performs a voltage boost process to increase the actual current value and actual voltage value of the light-emitting component, thereby preventing the existence of undervoltage light-emitting components on the backlight component, affecting the luminous brightness and thus affecting the display quality. When all light-emitting components are in an overvoltage state, a feedback signal indicating the overvoltage of the light-emitting component is promptly transmitted to the data transmission module. This allows the voltage control module to promptly feedback the overvoltage condition of the light-emitting component to the power supply circuit, and then the power supply circuit performs a voltage reduction process to reduce the actual current value and actual voltage value of the light-emitting component, thereby reducing the power consumption of the light-emitting component. The distribution circuit generates different control signals based on different power-on states to adjust the parameter value of the power supply signal output by the power supply circuit. The control process logic is simple, and the distribution circuit does not require high computing power, thereby ensuring the low cost of the display device.

[0039] In some embodiments, the voltage control module includes:

[0040] a conversion unit, connected to the data transmission module, and configured to convert the received feedback signal and output one of a first electrical signal and a second electrical signal;

[0041] a control unit, connected to the conversion unit, and configured to output the first control signal when receiving the first electrical signal, and output the second control signal when receiving the second electrical signal;

[0042] Among them, the first electrical signal indicates that the state of at least one of the light-emitting components is in an undervoltage state, and the second electrical signal indicates that the state of each light-emitting component is in an overvoltage state; the first control signal and the second control signal have different voltage values or different current values.

[0043] In the above technical solution, the driving group detects the power-on status of the light-emitting component, and the conversion unit and the control unit can promptly feed back the power-on status of the light-emitting component to the power supply circuit to trigger the power supply circuit to adjust the power supply parameters in time to ensure display quality.

[0044] In some embodiments, there are multiple distribution circuits, and at least some of the distribution circuits are cascaded and connected to the controller and the power supply circuit respectively;

[0045] The voltage control modules in two adjacent cascaded distribution circuits are cascaded to each other, and the voltage control module of the latter stage transmits the control signal through the voltage control module of the former stage.

[0046] In some embodiments, there are multiple distribution circuits, and at least some of the distribution circuits are connected to the controller and the power supply circuit respectively;

[0047] The voltage control modules in the plurality of distribution circuits connected in parallel are respectively connected to the power supply circuit.

[0048] In the above technical solution, when generating control signals, multiple voltage control modules not only consider the control signals generated by the included control units, but also consider the control signals output by other voltage control modules connected to their input terminals. In the cascade-connected voltage control modules, the parameter values of the signals that ultimately trigger the power supply circuit are determined step by step, so that the calculation process is dispersed in each voltage control module, ensuring the simple control logic of the processing module in the voltage control module, and the voltage control modules are directly connected to each other, without occupying the transmission bandwidth of the communication bus between the distribution circuits, and the voltage regulation of the power supply circuit is faster.

[0049] In some embodiments, the driving group is further configured to detect the power-on status of the connected light-emitting components and output a feedback signal representing the power-on status to the data transmission module;

[0050] Wherein, the distribution circuit further includes:

[0051] The register is connected to each of the data transmission modules and is configured to store the feedback signal transmitted by the data transmission module so that the controller can read the power-on status of the backlight assembly.

[0052] In the above technical solution, the register can save the setting information of the distribution circuit, and can also save the power-on status information of the light-emitting component obtained by the driving group connected to the data transmission module. When the controller needs to adjust the operation of the display device based on the above information, it can read it from the register in time to ensure the timeliness of the control.

[0053] In some embodiments, the distribution circuit further comprises:

[0054] a temperature detection module, configured to detect temperature data of the backlight assembly;

[0055] The register is connected to the temperature detection module and is configured to store the temperature data so that the controller can read the state of the backlight assembly.

[0056] In the above technical solution, a temperature sampling unit is provided in the distribution circuit to sample the temperature of the backlight assembly. There is no need to provide an additional temperature sensor in the backlight assembly, thus simplifying the circuit structure and installation cost of the backlight assembly.

[0057] In some embodiments, each of the driving groups includes at least one cascade of driving chips, each of the driving chips is connected to at least one of the light-emitting components, and each of the driving chips is connected to a different light-emitting component;

[0058] The distribution circuit is configured to transmit the backlight driving data to each of the driving groups, wherein the backlight driving data includes at least one driving data segment, so that at least one driving chip in the driving group receives one driving data segment and drives the connected light-emitting component to emit light.

[0059] In the above technical solution, the backlight assembly includes at least one driver group, each driver group includes at least one cascaded driver chip, and several driver chips in the same driver group can be connected to the data transmission path through a serial bus, without the need for each driver chip to be connected to the data transmission path through a cable separately, which can effectively reduce the complexity of the backlight assembly.

[0060] In some embodiments, the distribution circuit and the backlight assembly are respectively disposed on a light board.

[0061] In the above technical solution, the distribution circuit and the backlight assembly are respectively arranged on the lamp board, and can be connected to the driving chip through the inter-board wiring of the lamp board. There is no need to set connecting wires between the distribution circuit and the lamp board, which not only saves the number of circuit boards in the display device, but also reduces the number of connecting wires, making the assembly of the display device simpler.

[0062] In some embodiments, there are multiple distribution circuits, and at least one distribution circuit is connected to the controller; wherein:

[0063] At least some of the distribution circuits are cascaded, and each of the cascaded distribution circuits respectively receives the backlight driving data transmitted by the previous stage object, and transmits part of the backlight driving data to the connected driving group, and transmits another part of the backlight driving data to the connected distribution circuit; and / or,

[0064] At least some of the distribution circuits are connected in parallel, and each of the parallel distribution circuits receives the backlight driving data transmitted by the controller respectively.

[0065] In the above technical solution, multiple distribution circuits work together to process more backlight partitions. The capacity of each distribution circuit can be greatly reduced, which not only ensures the compatibility of different numbers of partitions, but also avoids the problem of redundant specifications caused by the large number of backlight partitions, thereby reducing costs.

[0066] In some embodiments, the controller is configured with a control interface and a first communication interface, the control interface is configured to transmit a strobe signal, and the first communication interface is configured to transmit the backlight driving data;

[0067] Wherein, the distribution circuit connected to the controller is configured with a gating interface and a second communication interface;

[0068] The strobe interface is connected to the control port to receive the strobe signal; the second communication interface is connected to the first communication interface to receive backlight driving data;

[0069] The distribution circuit connected to the controller is configured to transmit the backlight driving data when receiving the strobe signal and the backlight driving data.

[0070] In the above technical solution, the controller is provided with a first communication interface and a control interface, and at least one distribution circuit in the parallel distribution group is provided with a selection interface and a second communication interface. The distribution circuit connected to the controller receives a selection signal through the selection interface to determine whether to receive the backlight driving data sent by the controller, thereby saving the number of communication ports of the controller and ensuring the accuracy of the backlight driving data transmission.

[0071] In some embodiments, the at least one distribution circuit is connected to the controller via an SPI bus.

[0072] In the above technical solution, the controller can connect to a single distribution circuit or multiple distribution circuits simultaneously via the SPI bus, facilitating the use of multiple distribution circuits. The SPI bus has a high transmission speed, which helps reduce data transmission time and latency. Furthermore, the SPI bus's relatively simple communication protocol simplifies the wiring and circuit design between the controller and the distribution circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0074] Figure 1 A schematic diagram of an operation scenario between a display device and a control device provided in some embodiments of the present application;

[0075] Figure 2 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0076] Figure 3 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0077] Figure 4 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0078] Figure 5 A schematic diagram of the physical structure of a backlight assembly and a display panel provided in some embodiments of the present application;

[0079] Figure 6 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0080] Figure 7 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0081] Figure 8 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0082] Figure 9 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0083] Figure 10A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0084] Figure 11 A schematic diagram of the structure of a distribution circuit provided in some embodiments of the present application;

[0085] Figure 12 A schematic diagram of the structure of a distribution circuit provided in some embodiments of the present application;

[0086] Figure 13 Delay timing diagram of the data transmission module provided in some embodiments of the present application;

[0087] Figure 14 Delay timing diagram of the data transmission module provided in some embodiments of the present application;

[0088] Figure 15 A schematic diagram of the structure of a distribution circuit provided in some embodiments of the present application;

[0089] Figure 16 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0090] Figure 17 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0091] Figure 18 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0092] Figure 19 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0093] Figure 20 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0094] Figure 21 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0095] Figure 22 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0096] Figure 23 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0097] Figure 24 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0098] Figure 25 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0099] Figure 26The structure of the backlight assembly provided in some embodiments of the present application;

[0100] Figure 27 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0101] Figure 28 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0102] Figure 29 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0103] Figure 30 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0104] Figure 31 A schematic diagram of the structure of a display device provided in some embodiments of the present application;

[0105] Figure 32 A schematic structural diagram of a display device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0106] The following embodiments are described in detail, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following embodiments are not intended to represent all possible implementations consistent with the present application. They are merely examples of systems and methods consistent with certain aspects of the present application, as detailed in the claims.

[0107] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0108] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0109] The term “connected” may include electrically connected or coupled, and when an element is considered to be “connected” to another element, it may be directly connected to the other element or intervening elements may exist at the same time.

[0110] The terms "comprise," "include," and "have," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0111] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functionality associated with that element.

[0112] In the embodiments of the present application, a display device generally refers to a device capable of displaying images and processing data. For example, a display device includes, but is not limited to, smart TVs, laser projection devices, monitors, electronic bulletin boards, electronic tables, mobile terminals, computers, monitors, advertising screens, wearable devices, virtual reality devices, augmented reality devices, etc.

[0113] Figure 1 This is a schematic diagram of an operation scenario between a display device and a control device provided in some embodiments of the present application. Figure 1 As shown, the user can operate the display device 200 through the control apparatus 100 or the smart device 300 .

[0114] In some embodiments, the control device 100 may be a remote control, a stylus, a controller, or the like. For example, the remote control communicates with the display device 200 using infrared or Bluetooth protocols, as well as other short-range communication methods, to control the display device 200 wirelessly or wired. Users can control the display device 200 by inputting commands using buttons on the remote control, voice input, or control panel input.

[0115] In some embodiments, a smart device 300 (such as a mobile terminal, tablet computer, computer, laptop computer, etc.) can also be used to control the display device 200. For example, the display device 200 can be controlled using an application running on the smart device.

[0116] In some embodiments, the display device 200 may not use the aforementioned smart device or control device to receive instructions, but may receive user control through touch or gestures.

[0117] In some embodiments, the display device 200 can also be controlled in a manner other than the control device 100 and the smart device 300. For example, the user's voice command control can be directly received through a module for obtaining voice commands configured inside the display device 200, or the user's voice command control can be received through a voice control device set outside the display device 200.

[0118] In some embodiments, the display device 200 also communicates data with the server 400. The display device 200 may be communicatively coupled via a local area network (LAN), a wireless local area network (WLAN), or other networks. The server 400 may provide various content and interactions to the display device 200. The server 400 may be a single cluster or multiple clusters, and may include one or more types of servers.

[0119] Figure 2 A schematic structural diagram of a display device 200 provided in some embodiments of the present application.

[0120] In some embodiments, the display device 200 includes a display panel 210 including liquid crystal molecules configured to deflect based on received processed display data.

[0121] In some embodiments, the display device 200 includes a backlight assembly 220 configured to emit light based on backlight driving data. The display panel 210 may display a picture based on the backlight provided by the backlight assembly 220 .

[0122] In some embodiments, the display device 200 includes a controller 230, which is configured to receive a video input signal or an image input signal, obtain backlight brightness data and display data based on the video input signal or the image input signal, perform format conversion, timing control and other processing on the backlight brightness data and display data, and then output them.

[0123] In some embodiments, the controller 230 is configured to obtain a video input signal or an image input signal (hereinafter referred to as input signal) from an external input port or a network port, and perform format conversion, data processing, image rendering and other operations on the input signal to improve the display quality of the input signal.

[0124] In some embodiments, the controller 230 may be configured to output data based on a preset protocol, such as the preset protocol including an AM driving protocol, which is a protocol supported by the backlight assembly 220 . The backlight assembly 220 may process the driving data of the preset protocol to generate corresponding backlight.

[0125] In some embodiments, the AM driving protocol includes a serial peripheral interface (SPI) protocol, which is a widely used protocol in display devices and has strong universality.

[0126] In some embodiments, the AM driving protocol includes the SPB protocol, in which the electrical signal with a jump in the data cycle corresponds to 1 in the driving data code, and the electrical signal corresponding to the data without a jump in the data cycle corresponds to 0 in the driving data code. After each data cycle is completed, the level will jump once, which has higher stability than the SPI protocol.

[0127] In some embodiments, reference Figure 3 and Figure 4 In the circuit structure shown, the controller 230 may include a system-on-chip (SOC) 231, which is configured to obtain a video input signal or an image input signal (hereinafter referred to as the input signal) from an external input port or a network port, and perform format conversion, data processing, image rendering and other operations on the input signal.

[0128] In some embodiments, the system-on-chip 231 is configured to generate backlight brightness data and display data based on a video input signal or an image input signal.

[0129] In some embodiments, reference Figure 3 and Figure 4 In the circuit structure shown, the controller 230 may include a timing controller (Tcon) 232, which is electrically connected to the system-on-chip 231 and configured to obtain intermediate display data, process the intermediate display data, and output the display data in a timely manner. The intermediate display data cannot be directly processed by the display panel 210, while the display data is data that can be processed by the display panel 210.

[0130] In some embodiments, the timing controller 232 is electrically connected to the display panel 210 and is configured to map display data with positions of liquid crystal molecules so that the display data obtained by the display panel is the data it needs to display.

[0131] In some embodiments, please refer to Figure 3 and Figure 4 In the circuit structure shown, the controller 230 may include a backlight controller (Bcon) 233 or a dimming controller (DCON), which is configured to obtain processed data associated with backlight brightness data, generate and output backlight driving data based on the processed data.

[0132] In some embodiments, the backlight assembly 220 is electrically connected to the backlight controller 233 , and the backlight controller 233 is configured to map the backlight driving data with the location of the partition so that the backlight driving data obtained by each partition is the data for driving the partition to emit light.

[0133] refer to Figure 3 In the circuit structure shown, the controller 230 may include a backlight controller 233 , wherein the backlight controller 233 is electrically connected to the system-on-chip 231 and is configured to obtain backlight brightness data from the system-on-chip 231 .

[0134] refer to Figure 4 In the circuit structure shown, the backlight controller 233 is electrically connected to the timing controller 232 and is configured to obtain backlight brightness data from the timing controller 232 .

[0135] In some embodiments, the backlight assembly 220 includes at least one driving group 221, at least one driving group 221 is electrically connected to the controller 230, each driving group 221 includes at least one driving chip 2210, and the driving chip 2210 is configured to generate a driving signal based on the backlight driving data.

[0136] In some embodiments, the backlight assembly 220 further includes a plurality of lamp beads, at least one of which is electrically connected to form a light-emitting unit group 222 , which is electrically connected to a driving end of the driving chip 2210 and configured to emit light based on a driving signal.

[0137] In some embodiments, in the light emitting unit group 222, at least one lamp bead is connected in series to form a lamp string, which has a simple connection process, low production cost, and convenient layout.

[0138] In some embodiments, in the light emitting unit group 222 , at least one lamp bead is connected in parallel, and the working states of the lamp beads do not affect each other.

[0139] In some embodiments, in the light-emitting unit group 222, after at least one lamp bead is connected in series to form a lamp string, at least one lamp string is electrically connected in parallel, so as to balance the simplicity of the connection process and the stability of the lamp bead lighting.

[0140] In some embodiments, the multiple lamp beads in the backlight assembly 220 are distributed in an array, and the lamp string is a lamp string composed of lamp beads connected in series from left to right or from right to left, or a lamp string composed from top to bottom or from bottom to top, or a lamp string composed of lamp beads connected in series in a preset order (for example: rotation, bending, etc.), which is used to adapt to the display order of the display panel 10 to ensure the display quality of the display device.

[0141] In some embodiments, the lamp beads can be composed of MiniLED, MicroLED, WLED, RGB-LED, GB-rLED or QLED (quantum dot).

[0142] In some embodiments, the physical structure diagram of the backlight assembly 220 and the display panel 210 is as follows: Figure 5 As shown, the display panel 210 is placed on the upper side of the backlight assembly 220 , and the upper side of the display panel 210 can display images.

[0143] In some embodiments, the backlight assembly 220 includes: a diaphragm 501, which is configured to improve the reflection efficiency of the backlight generated by the backlight assembly, adjust the light, increase the brightness and color saturation of the image output by the display, increase the utilization rate of light, and enable the screen to display images normally.

[0144] In some embodiments, the backlight assembly 220 includes a diffusion plate 502 configured to scatter light and guide light uniformly, so that the brightness distribution of the entire display panel is more uniform.

[0145] In some embodiments, the backlight assembly 220 includes a bracket 503 configured to support the diffuser plate 402 , the membrane 401 , etc., so as to maintain an optical distance between the light board 408 and the diffuser plate 402 .

[0146] In some embodiments, the backlight assembly 220 includes a reflective sheet 504 configured to reflect backlight from the light panel 408 toward the diffuser plate 402 .

[0147] In some embodiments, the backlight assembly 220 further includes a honeycomb panel 505 , and the honeycomb panel 505 is configured to utilize anisotropy to improve the sound effect.

[0148] In some embodiments, the backlight assembly 220 further includes a vibrator 506 configured to generate sound waves through vibration, emit sound, and provide a vibration source.

[0149] In some embodiments, the backlight assembly 220 includes a backplate 507 configured to provide a supporting substrate.

[0150] In some embodiments, the backlight assembly 220 includes a lamp board 508 , on which lamp beads are disposed, and is configured to provide backlight.

[0151] In some embodiments, the arrangement order of the components in the backlight assembly 220 from top to bottom is: membrane 501 , diffuser 502 , bracket 503 , reflector 504 , lamp board 508 , and backboard 507 .

[0152] In some embodiments, taking a micro-LED display device as an example, a plurality of lamp boards 508 are provided in the backlight assembly 220. After the plurality of lamp boards 408 are spliced together, they jointly emit light to provide backlight to the display panel 210. Each lamp board 508 includes a plurality of light-emitting areas, and each light-emitting area (also called a partition) includes a plurality of micro lamp beads, which are micron-level lamp beads such as miniLED and microLED.

[0153] The light board 508 is electrically connected to at least one driver group 221 . In some embodiments, the driver group 221 is disposed on the light board 508 .

[0154] The driver group 221 includes one or more driver chips 2210. The driver chip 2210 of each partition receives the backlight driving data sent by the backlight controller 233, and drives the corresponding lamp beads to emit light based on the backlight driving data, thereby realizing local backlight control of the backlight component 220, that is, realizing Local dimming, thereby achieving more accurate regional light control and making the screen brightness more uniform and harmonious.

[0155] As the number of partitions increases, the amount of image data to be processed by the controller 230 in the display device increases. In order to ensure that the backlight driving data generated based on the image data can be completely transmitted to the backlight component 220, the transmission frequency of the electrical signals for interaction between the controller 230 and the backlight component 220 is also increased. The controller 230 needs to meet the requirements of large storage space, large computing power, and high main frequency.

[0156] In the related technology, the system-level chip 231 in the controller 230 processes image data and generates backlight brightness data. The backlight controller 233 can store the backlight brightness data, convert the backlight brightness data into backlight driving data based on the AM driving protocol, and map the backlight driving data according to the distribution of the light-emitting unit group 222 and then output it. The driving chip 2210 and the backlight controller 233 must not only meet the requirements of processing large amounts of data, but also meet the requirements of high main frequency, resulting in high comprehensive requirements for the backlight controller 233 and high cost of the display device. How to reduce the cost of the display device has become a research focus.

[0157] Since the backlight controller 233 generally processes and sends the data only after obtaining all the backlight brightness data, when there are many partitions on the backlight component 220, the corresponding amount of backlight brightness data is also large, and the transmission time of the backlight brightness data is long, resulting in data transmission delays and resource waste. Data transmission delays can easily lead to display synchronization between the backlight component 220 and the display panel 210.

[0158] To this end, some embodiments of the present application provide a display device for solving at least one of the above technical problems. The technical concept of the present application is: on the one hand, the related functions of the backlight controller 233 for storing backlight brightness data and converting backlight brightness data into backlight drive data based on the AM drive protocol are performed in other controllers in the display device with more powerful and redundant computing functions, which can achieve effective utilization of the controller's computing functions and improve the effective utilization of computing resources; on the other hand, a distribution circuit is set in the display device, which can separate operations such as data transmission that require high-frequency support from the backlight controller 233 for processing, reducing the controller's demand for the main frequency. The controller only needs to use its high computing power to process the display data. The processing process of the distribution circuit and the controller is more targeted, and the combined cost is lower than the cost of the controller in the related art that has high requirements for the main frequency and data processing computing power, thereby reducing the cost of the display device and broadening the application range of the display device.

[0159] The technical solution of the present application is described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. For ease of explanation, the controller in the following embodiments can be any of the system-level chips and timing controllers mentioned in the above embodiments. It can be understood that the above two controllers are only examples and are not limiting.

[0160] In some embodiments, reference Figure 6 In the circuit structure shown, the display device includes a display panel 310. For the relevant description of the display panel 310, reference may be made to the above embodiment and no further details will be given here.

[0161] In some embodiments, reference Figure 6 In the circuit structure shown, the display device includes a backlight assembly 320, which is located on the side of the display surface away from the display panel 310. The backlight assembly 320 includes: at least one light-emitting component; at least one driving group 321, each driving group 321 is connected to at least one light-emitting component, and the light-emitting components connected to different driving groups 321 are different. The light-emitting components may include lamp beads, and the relevant description of the lamp beads can refer to the above embodiments and will not be repeated here. The driving group 321 may include at least one cascaded driving chip, each driving chip is connected to at least one light-emitting component, and the light-emitting components connected to each driving chip are different. At least one lamp bead is electrically connected to form a light-emitting unit group 322.

[0162] In some embodiments, reference Figure 6In the circuit structure shown, the display device includes a controller 330, which is connected to the display panel 310 and the distribution circuit 340 respectively. The controller 330 is configured to output backlight driving data to the distribution circuit 340 based on the image data, and transmit the backlight driving data to the backlight assembly 320 through the distribution circuit 340. The controller 330 is also configured to output display data to the display panel 310 based on the image data, so that the display panel 310 displays the image. It can be understood that when the backlight assembly 320 is not blocked, the display panel 310 will display the image according to the received display data under the illumination of the backlight provided by the backlight assembly 320; when part of the backlight provided by the backlight assembly 320 is blocked, the display panel 310 will still display the image according to the unblocked backlight portion.

[0163] In this embodiment, the controller 330 has a display data computing and acquisition function, capable of outputting display data based on image data, facilitating the display panel 310 to display an image based on the received display data. The controller 330 also has a backlight drive data computing and acquisition function, capable of outputting backlight drive data based on image data, facilitating output of the backlight drive data to the backlight assembly 320 via the distribution circuit 340. It will be appreciated that the controller 330 having the display data computing and acquisition function often has powerful computing and processing capabilities, and may have redundancy in its computing and processing functions. The backlight drive data computing and acquisition process is performed within the controller 330, which can effectively utilize the computing and processing functions of the controller 330 and improve the efficient use of computing resources.

[0164] In some embodiments, reference Figure 6 In the circuit structure shown, the display device includes a distribution circuit 340 connected to the controller 330 and the backlight assembly 320 respectively. The distribution circuit 340 is configured to transmit the backlight driving data output by the controller 330 to the backlight assembly 320.

[0165] refer to Figure 7 In the circuit structure shown, the distribution circuit 340 is connected to the system-level chip 331. In this connection mode, the operation concentration of the system-level chip 331 is higher, which can improve the operation utilization of the system-level chip 331.

[0166] refer to Figure 8 In the circuit structure shown, the distribution circuit 340 is electrically connected to the timing controller 332. In this connection mode, the backlight driving data can be jointly generated by the system-level chip 331 and the timing controller 332, which helps to increase the generation link of the backlight driving data to improve the display effect, or helps to release the computing power of the system-level chip 331 by allocating part of the computing process to the timing controller 332, thereby improving the computing power utilization of the timing controller 332 and reducing the computing power requirement of the system-level chip 331.

[0167] In some embodiments, please refer to Figure 6-Figure 8 In the circuit structure shown, the distribution circuit 340 includes at least one data transmission path (such as path A in the figure), which is connected to at least one driver group 321. The data transmission path is configured to transmit backlight driving data to the connected driver group 321, so that the driver group 321 drives the connected light-emitting component to provide backlight. The number of data transmission paths is the same as the number of driver groups 321. Each data transmission path is connected between the controller 330 and a driver group 321. Each data transmission path receives backlight driving data output by the controller 330 and transmits the backlight driving data to the driver group 321, so that the driver group 321 drives the connected light-emitting component to provide backlight.

[0168] The data transmission path has data transmission and distribution functions, and can separate data transmission and other operations that require high-frequency support from the backlight controller 330 in the related technology for processing, thereby reducing the controller 330 of this embodiment's demand for the main frequency. The processing process of the distribution circuit 340 and the controller 330 is more targeted, and the combined cost is lower than the cost of the controller 330 in the related technology that has high comprehensive requirements for the main frequency and data processing computing power.

[0169] In some embodiments, the data transmission path may be one, which is connected to a driver group 321 and configured to transmit the backlight driving data output by the controller 330 to the driver group 321 .

[0170] In some embodiments, there are multiple data transmission paths, each path corresponding to connecting the controller 330 and a driver group 321. Different data transmission paths are connected to different driver groups 321. The multiple data transmission paths transmit the backlight driving data output by the controller 330 to the connected driver groups 321 in parallel.

[0171] In the above technical solution, the display device includes a display panel 310, a backlight assembly 320, a controller 330, and a distribution circuit 340. The backlight assembly 320 is located on a side of the display surface away from the display panel 310 and includes at least one light-emitting component and at least one driver group 321. Each driver group 321 is connected to at least one light-emitting component. The distribution circuit 340 includes at least one data transmission path correspondingly connected to at least one driver group 321. The controller 330 is configured to output backlight driving data to the distribution circuit 340, so that the received backlight driving data is transmitted to the connected driver group 321 via the data transmission path of the distribution circuit 340, so that the driver group 321 drives the connected light-emitting component to provide backlight. The controller 330 is also configured to output display data to the display panel 310, so that the display panel 310 displays an image.

[0172] On the one hand, the controller 330 has the function of computing and acquiring display data. Typically, a controller 330 with this function has very powerful computing and processing capabilities, and there is redundancy in its computing and processing capabilities. By performing the computing and acquiring backlight drive data of the backlight controller 330 in the related art within the controller 330, the computing and processing capabilities of the controller 330 can be effectively utilized, thereby improving the efficient use of computing resources. On the other hand, the distribution circuit 340 can separate and process operations such as data transmission that require high-frequency support from the backlight controller 330 in the related art, thereby reducing the controller 330's requirement for the main frequency. The processing of the distribution circuit 340 and the controller 330 in this embodiment is more targeted, and the combined cost is lower than that of the controller 330 in the related art, which has high requirements for both the main frequency and data processing computing power. Thus, compared to the complex circuit structure of the backlight controller 330, this embodiment can ensure the normal display backlight of the display device through the controller 330 with sufficiently powerful computing capabilities and the distribution circuit 340 with lower costs, simplifying the circuit structure and eliminating the need for the more expensive backlight controller 330, thereby reducing costs and broadening the application range of the display device.

[0173] In some embodiments, reference Figure 9 In the circuit structure shown, the distribution circuit 340 includes: a data receiving module 341 connected to the controller 330 and configured to receive at least one backlight driving data output by the controller 330.

[0174] The data receiving module 341 is connected to the controller 330 and the data transmission module 342 respectively. The data receiving module 341 is configured to distribute the received at least one backlight driving data transmission to each data transmission module 342. In the related art, the backlight controller 330 needs to process and distribute the backlight driving data corresponding to each driving group 321, which increases the distribution burden and reduces the overall efficiency. In this embodiment, on the one hand, the data receiving module 341 in the distribution circuit 340 is able to receive and transmit the distributed backlight driving data, thereby achieving a faster response time, especially when displaying dynamic images, thereby improving the overall performance of the display device; on the other hand, the controller 330 only needs to output the backlight driving data corresponding to each driving group 321 to the data receiving module 341 for distribution, without the need to perform specific distribution details for each driving group 321, which can reduce the workload of the controller 330 in distributing the backlight driving data and improve the backlight driving data distribution efficiency of the display device.

[0175] In some embodiments, the data receiving module 341 may be a microprocessor, an FPGA (field programmable gate array), a digital signal processor (DSP), or the like.

[0176] In some embodiments, please refer to Figure 9As shown in the circuit structure, the distribution circuit 340 includes at least one data transmission module 342 ( Figure 9 Taking two as an example, each data transmission module 342 is connected to the data receiving module 341 to form a data transmission path. The data transmission module 342 is configured to transmit the backlight driving data to the driving group 321 after receiving the backlight driving data.

[0177] After the data transmission module 342 is connected to the data receiving module 341, a data transmission path is formed. Each data transmission path only needs to receive and transmit the backlight driving data of the corresponding connected driving group 321. The amount of backlight driving data is small and the transmission time is short, which can avoid data transmission delays and resource waste, and improve the display synchronization of the backlight component 320 and the display panel 310.

[0178] In some embodiments, the data transmission module 342 can be a microcontroller 330 or a microprocessor. The data transmission module 342 can output backlight driving data to the driving module through an SPI port, a GPIO (General Purpose Input / Output) port, etc.; the data transmission module 342 can also be a logic circuit such as an FPGA, which supports the transmission of backlight driving data to the driving module.

[0179] In the above technical solution, the data receiving module 341 of the distribution circuit 340 is arranged between the controller 330 and multiple data transmission modules 342, and each data transmission module 342 is arranged between the data receiving module 341 and the driving group 321. The data transmission path composed of the data receiving module 341 and the data transmission module 342 can distribute the backlight driving data received by the distribution circuit 340 according to a preset data transmission order, thereby achieving a faster response time; the controller 330 only needs to distribute the backlight driving data to each distribution circuit 340, which can reduce the workload of the controller 330 in distributing the backlight driving data and improve the backlight driving data distribution efficiency of the display device.

[0180] In some embodiments, the data transmission module 342 is configured to output the backlight driving data after receiving backlight driving data of a preset length, so as to prevent the data transmission module 342 from receiving data slowly and causing incomplete output of the backlight driving data segment to be displayed.

[0181] In some embodiments, reference Figure 10In the circuit structure shown, the distribution circuit 340 further includes a register 343, and the data transmission module 342 is further connected to the register 343. The data transmission module 342 is configured to store the backlight driving data in the register 343 connected thereto when receiving the backlight driving data is not completed, and transmit the backlight driving data stored in the register 343 to the driver group 321 after the data transmission module 342 receives the backlight driving data of a preset length.

[0182] In some embodiments, there are multiple data transmission modules 342; wherein the data receiving module 341 is configured to receive multiple backlight driving data, and transmit the backlight driving data to the corresponding data transmission module 342 each time a backlight driving data is received according to the timing of receiving each backlight driving data.

[0183] In the above technical solution, each time the data receiving module 341 receives backlight driving data, it immediately transmits the data to the corresponding data transmission module 342 according to the reception sequence. In this way, once the data reception of the data transmission module 342 is completed, it is sent out immediately, forming a receive-and-send architecture, which minimizes data delay and avoids data transmission delays and resource waste.

[0184] In some embodiments, the timing of each backlight driving data received by the data receiving module 341 can be consistent with the time when the liquid crystal molecules corresponding to the light-emitting components driven by each backlight driving data complete the preset angle deflection, thereby improving the display synchronization of the backlight component 320 and the display panel 310.

[0185] For example, in a frame display cycle, the time when the liquid crystal molecules corresponding to the light-emitting component driven by the backlight driving data received first by the data receiving module 341 complete the deflection of the preset angle is earlier than the time when the liquid crystal molecules corresponding to the light-emitting component driven by the backlight driving data received later complete the deflection of the preset angle.

[0186] In some embodiments, there are multiple data transmission modules 342, and chip select wires are respectively connected between the data receiving module 341 and each data transmission module 342. When the data receiving module 341 outputs backlight driving data to the target data transmission module 342, it outputs the chip select signal corresponding to the target data transmission module 342 through the chip select wire. Based on the chip select signal, the target data transmission module 342 receives the backlight driving data, and other data transmission modules 342 do not receive the backlight driving data, thereby improving the pertinence and effectiveness of the backlight data transmission.

[0187] In some embodiments, the data receiving module 341 includes a microprocessor, and the chip select signal can be a level signal output by the microprocessor. For example, when it is at a low level, it can select or activate the target data transmission module 342, triggering the target data transmission module 342 to receive backlight driving data; when it is at a high level, the data receiving module 341 is in an inactive state.

[0188] In some embodiments, there are multiple data transmission modules 342 , and each data transmission module 342 is set with corresponding first identification information. Different data transmission modules 342 have different corresponding first identification information; the first identification information is used to represent the identity information of the data transmission module 342 .

[0189] In some embodiments, the data transmission module 342 is configured to receive a preset amount of backlight driving data transmitted by the data receiving module 341 based on the first identification information corresponding to the data transmission module 342 ; the backlight driving data includes the first identification information corresponding to the data transmission module 342 .

[0190] In some embodiments, the first identification information includes address information, such as: a burned address, a physical address, wherein the physical address can be the physical address of the package structure pin of the data transmission module 342, or it can be the physical address of other pins electrically connected to the package structure pin, or it can be the voltage value of the electrical connection of the package pin as the physical address information.

[0191] In some embodiments, reference Figure 11 In the circuit structure shown, the data receiving module 341 can be connected to multiple data transmission modules 342 through one output terminal. The multiple output terminals can output the received backlight driving data in parallel to each data transmission module 342, thereby reducing the number of connection terminals and lowering hardware costs.

[0192] In some embodiments, reference Figure 12 In the circuit structure shown, the data receiving module 341 is provided with multiple output terminals, and the multiple output terminals are correspondingly connected to multiple data transmission modules 342, and each output terminal is connected to a different data transmission module 342. The data receiving module 341 can output the received backlight driving data in parallel to each data transmission module 342, thereby improving the efficiency of backlight driving data transmission.

[0193] In some embodiments, there are multiple data transmission modules 342; wherein, the data transmission module 342 is also configured to receive a frame start signal, and read the data transmitted by the data receiving module 341 after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal; or transmit the received backlight driving data to the connected driving group 321 after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal.

[0194] Among them, the delay duration is determined based on the light scanning delay duration of the liquid crystal molecules corresponding to the light-emitting unit group 322 connected to the data transmission module 342, so that the light-emitting unit group 322 emits light when the liquid crystal molecules are deflected to a preset angle, thereby ensuring the accuracy of the liquid crystal molecules displaying pixels.

[0195] In the above technical solution, the accurate reading time or transmission time of each data transmission module 342 is determined by the delay length corresponding to each data transmission module 342, thereby determining the light-emitting time of the driving group 321 corresponding to the data transmission module 342 to drive the light-emitting component, which can ensure that each light-emitting component in the backlight component 320 can delay light emission. The delay is consistent with the scanning order of the liquid crystal molecules corresponding to the light-emitting unit group 322 in the display panel 310, so as to ensure the accuracy of the display image of the display device.

[0196] In some embodiments, the data transmission module 342 transmits the received backlight driving data to the connected driving group 321 after a preset delay time starting from the initial moment corresponding to the frame start signal received. The frame start signal may be a vertical synchronization signal Vsync.

[0197] refer to Figure 13 In the timing diagram, the first delay length corresponding to the first data transmission module 1 is d1, the second delay length corresponding to the second data transmission module 2 is d2, and d2>d1, then when the first data transmission module 1 obtains the vertical synchronization signal Vsync, after the first delay length d1, the first data transmission module 1 outputs the obtained backlight driving data segment; the second data transmission module 2 outputs the obtained backlight driving data segment after the second delay length d2 starting from the vertical synchronization signal Vsync.

[0198] In some embodiments, the data transmission module 342 reads the data transmitted by the data receiving module 341 after a preset delay time from the initial moment corresponding to the frame start signal received. The frame start signal may be a vertical synchronization signal Vsync.

[0199] refer to Figure 14 The timing diagram shows that the first delay time length corresponding to the first data transmission module 1 is d1, the second delay time length corresponding to the second data transmission module is d2, and d2=d1. The time when the first data transmission module 1 receives the backlight driving data segment is earlier than the time when the second data transmission module 2 receives the backlight driving data segment. Taking the vertical synchronization signal Vsync as the reference, the third delay time length d3 is the delay time length of the first data transmission module 1 receiving the backlight driving data segment, and the fourth delay time length d4 is the delay time length of the second data transmission module 2 receiving the backlight driving data segment, and d3 <d4。

[0200] The first data transmission module 342 receives the backlight driving data segment at time t1 after the third delay time d3 from the vertical synchronization signal Vsync, and stores the backlight driving data segment in the register 343. The second data transmission module 342 receives the backlight driving data segment at time t2 after the fourth delay time d4 from the vertical synchronization signal Vsync, and stores the backlight driving data segment in the register 343. From time t3 after the first delay time d1 from the vertical synchronization signal Vsync, the two data transmission modules 342 simultaneously output the backlight driving data.

[0201] In some embodiments, multiple data transmission modules 342 receive the frame start signal at the same time, and different data transmission modules 342 have different delay durations.

[0202] In the above technical solution, on the one hand, different data transmission modules 342 have different delay durations, which ensures the phase delay of each data transmission module 342 and cooperates with different driver groups 321 to complete the backlight scanning function, thereby achieving a delay in backlight lighting even when the AM driver chip does not have a phase delay function. On the other hand, the different delay durations of different data transmission modules 342 can stagger the time when different data transmission modules 342 obtain backlight drive data. This eliminates the need to provide a large-capacity storage unit in the distribution circuit 340 to ensure consistency in delay duration, thereby improving the utilization rate of the storage unit, reducing the storage unit capacity, and reducing costs.

[0203] In some embodiments, the plurality of data transmission modules 342 transmit the received backlight driving data to the connected driving group 321 with different delay times, corresponding to the time required for different liquid crystal molecules to complete the deflection of the preset angle.

[0204] According to the first-in-first-out rule, in a frame display cycle, the time when the liquid crystal molecules corresponding to the first data transmission module 342 corresponding to the backlight driving data first received by the data receiving module 341 complete the first preset angle deflection is earlier than the time when the liquid crystal molecules corresponding to the second data transmission module 342 corresponding to the backlight driving data received later complete the second preset angle deflection. Therefore, the time when the first data transmission module 342 outputs the backlight driving data is earlier than the time when the second data transmission module 342 outputs the backlight driving data segment.

[0205] In some embodiments, multiple data transmission modules 342 read the backlight driving data after different delay periods, and each data transmission module 342 reads the backlight driving data one by one and stores it in the register 343 until the last data transmission module 342 in the preset order completes receiving the backlight driving data. Then, multiple data transmission modules 342 uniformly output the backlight driving data to correspond to the time for the same liquid crystal molecules to complete the preset angle deflection.

[0206] According to the first-in-first-out rule, in one frame display cycle, the time when the liquid crystal molecules corresponding to the first data transmission module 342 complete the deflection of the third preset angle is the same as the time when the liquid crystal molecules corresponding to the second data transmission module 342 complete the deflection of the fourth preset angle, or the time difference is within the preset time range and can be ignored. Then the time when the first data transmission module 342 outputs the backlight driving data segment is the same as the time when the second data transmission module 342 outputs the backlight driving data segment.

[0207] In the above technical solution, the data transmission module 342 reads the backlight driving data after different delay times, and finally outputs the backlight driving data uniformly. Therefore, the data receiving module 341 can perform time-sharing transmission of data between multiple data transmission modules 342, which can adapt to the transmission logic used in the display device. There is no need to adjust the data transmission logic between the controller 330 and the distribution circuit 340, and it can also ensure that the number of terminals for outputting backlight driving data by the controller 330 is low, thereby ensuring the low cost of the display device.

[0208] In some embodiments, multiple data transmission modules 342 receive the frame start signal at the same time, and the delay durations of different data transmission modules 342 are the same.

[0209] In the above technical solution, on the one hand, the delay durations of different data transmission modules 342 are identical, ensuring phase synchronization of each data transmission module 342 and enabling simultaneous backlighting even when the AM driver chip lacks phase synchronization. On the other hand, the identical delay durations of different data transmission modules 342 reduce the number of distribution circuits 340 that simultaneously transmit backlight driving data to driver chips connected to simultaneously emitting light-emitting components, thereby improving the centralization of data transmission from the controller 330 to the distribution circuits 340 at different lighting times.

[0210] In some embodiments, reference Figure 15 In the circuit structure shown, the distribution circuit 340 further includes: a synchronization module 344, which is connected to the multiple data transmission modules 342 respectively and is configured to output a frame start signal to each data transmission module 342 when a synchronization signal is received.

[0211] The synchronization signal may be the frame start signal itself. Upon receiving the frame start signal, the synchronization module 344 transmits the frame start signal to each connected data transmission module 342. The synchronization signal may also be a trigger signal for triggering the transmission of the frame start signal. Upon receiving the trigger signal, the synchronization module 344 transmits the frame start signal to each connected data transmission module 342.

[0212] In the above technical solution, the synchronization module 344 outputs a frame start signal to each data transmission module 342 , thereby enabling the transmission timing of each connected data transmission module 342 to be regulated.

[0213] In some embodiments, the synchronization module 344 is configured to output a frame start signal to each data transmission module 342 after obtaining the synchronization signal and after a first preset delay period, starting from a reference time, where the reference time is the sum of the time when the synchronization signal is obtained and the first preset delay period.

[0214] Each data transmission module 342 in the distribution circuit 340 can be set with a second preset delay time relative to the reference time when the frame start signal is received. The data transmission module 342 outputs the backlight driving data within the second preset delay time after obtaining the frame start signal. The total delay time of the distribution circuit 340 as a whole from receiving the synchronization signal to outputting the backlight driving data is the sum of the first preset delay time set by the synchronization module 344 and the second preset delay time set by the data transmission module 342.

[0215] When a display device includes multiple distribution circuits 340, the data transmission modules 342 transmitting the same backlight driving data order in different distribution circuits 340 can be configured with the same second preset delay time. Simply set the first preset delay time in the different distribution circuits 340. It is noteworthy that the light-emitting components driven by the corresponding distribution circuits 340 have the same delay pattern.

[0216] For example, when the backlight assembly 320 includes six rows of light-emitting components, the backlight assembly 320 scans row by row from top to bottom and from left to right. The backlight assembly 320 is connected to two distribution circuits 340, wherein the first distribution circuit 340 transmits backlight driving data corresponding to the first, third, and fifth row partitions, and the second distribution circuit 340 transmits backlight driving data corresponding to the second, fourth, and sixth row partitions. Three data transmission modules 342 are provided in each distribution circuit 340, and each data transmission module 342 corresponds to one row partition. The second preset delay durations set for the data transmission modules 342 corresponding to the first and second rows are the same, the fifth delay durations set for the data transmission modules 342 corresponding to the third and fourth rows are the same, and the second delay durations set for the data transmission modules 342 corresponding to the fifth and sixth rows are the same. It is sufficient that the first preset delay duration set for the first distribution circuit 340 is shorter than the first preset delay duration of the second distribution circuit 340.

[0217] In some embodiments, the distribution circuit 340 may not include the data receiving module 341. In a scheme in which the data transmission module 342 transmits the received backlight driving data to the connected driving group 321 after a preset third preset delay period starting from the initial moment corresponding to the frame start signal, the controller 330 may be configured to output the backlight driving data corresponding to the data transmission module 342 after a fourth preset delay period starting from the initial moment corresponding to the frame start signal.

[0218] The fourth delay duration is determined based on the third preset delay duration corresponding to the data transmission module 342 and the transmission duration of the backlight driving data segment. The transmission duration is the duration for the controller 330 to transmit the backlight driving data segment from the controller 330 to the data transmission module 342. In some embodiments, the fourth delay duration is the difference between the third delay duration and the transmission duration.

[0219] In the above technical solution, the controller 330 determines the fourth delay duration for transmitting data to each data transmission module 342 through the third delay duration and data transmission duration corresponding to the data transmission module 342. The controller 330 regulates the sending time of the backlight driving data corresponding to each data transmission module 342, which can improve the computing power utilization of the controller 330, simplify the operating logic of the distribution circuit 340, and ensure the low cost of the display device.

[0220] In some embodiments, the driving group 321 is further configured to detect the power-on status of the connected light-emitting components and output a feedback signal representing the power-on status to the data transmission module 342 .

[0221] In some embodiments, reference Figure 16 In the circuit structure shown, the driving group 321 is configured with a data input terminal (DIN in the figure) and a data output terminal (DOUT in the figure). The data input terminal is configured to receive backlight driving data, and the data output terminal is configured to output a feedback signal. The driving group 321 can transmit the feedback signal through the transmission wire between the data output terminal and the data transmission module 342, which will not affect the process of the data transmission module 342 transmitting driving data to the driving group 321.

[0222] In some embodiments, the driving group 321 reversely transmits the feedback signal to the data transmission module 342 through the transmission wire between its data input end and the data transmission module 342, saving the number of connecting lines between the data transmission module 342 and the driving group 321 and simplifying the circuit structure.

[0223] In some embodiments, continue to refer to Figure 16In the circuit structure shown, the display device also includes: a power supply circuit 350, which is connected to the light-emitting component and is configured to provide a power supply signal to the light-emitting component; wherein, the distribution circuit 340 also includes: a voltage control module 345, which is connected to each data transmission module 342 and is configured to receive a feedback signal transmitted by the data transmission module 342, and output a control signal to the power supply circuit 350 based on the feedback signal to control the power supply circuit 350 to adjust the parameter value of the power supply signal.

[0224] The feedback signal represents the power-on status of the light-emitting component. The driver group 321 may be internally equipped with a voltage / current sensor, an analog-to-digital conversion unit, a metering chip, etc., which can detect the power-on status of the light-emitting component and output a corresponding feedback signal to the voltage control module 345. For example, when the light-emitting component is in an undervoltage state, the driver group 321 may output a first-level signal; when the light-emitting component is in an overvoltage state, the driver group 321 may output a second-level signal. The level of the second-level signal is different from the level of the first-level signal. Based on the level state, the voltage control module 345 can output a target control signal to the power supply circuit 350 to control the power supply circuit 350 to adjust the parameter value of the power supply signal. The parameter value can be a voltage parameter or a current parameter.

[0225] In the above technical solution, the distribution circuit 340 also receives a feedback signal related to the power-on status of the light-emitting component detected by the driver group 321, and outputs a control signal to the power supply circuit 350 based on the feedback signal to adjust the voltage value of the power supply signal output by the power supply circuit 350. In this way, the voltage control of the power supply circuit 350 can be achieved through the distribution circuit 340. When the number of light-emitting components is large, the amount of feedback signal data is large, and the main frequency required for the device receiving the feedback signal is relatively high. Since the main frequency set by the distribution circuit 340 for backlight drive data transmission is relatively high, it can support the transmission requirements of the feedback signal without increasing costs. Compared with implementing voltage regulation control of the power supply circuit 350 through the controller 330, the distribution circuit 340 separates the voltage regulation control process from the controller 330, which can reduce the main frequency requirement of the controller 330 and reduce the cost of the display device.

[0226] In some embodiments, the control signal includes a first control signal and a second control signal. The first control signal instructs the power supply circuit 350 to output the power supply signal after boosting the voltage. The second control signal instructs the power supply circuit 350 to output the power supply signal after reducing the voltage.

[0227] Among them, the voltage control module 345 is configured to output a first control signal when the feedback signal feedback indicates that the power-on state of at least one light-emitting component is in an undervoltage state; and output a second control signal when the feedback signal feedback indicates that the power-on state of each light-emitting component is in an overvoltage state.

[0228] Among them, when the light-emitting component is in an undervoltage state, it indicates that the actual current value flowing through the light-emitting component is lower than the predetermined current value; when the light-emitting component is in an overvoltage state, it indicates that the actual current value flowing through the light-emitting component is not lower than the predetermined current value.

[0229] In the above technical solution, the driving group 321 detects the power-on status of the light-emitting components. When the light-emitting components are in an undervoltage state, a feedback signal indicating the undervoltage of the light-emitting components is promptly transmitted to the data transmission module 342. This allows the voltage control module 345 to promptly feedback the undervoltage condition of the light-emitting components to the power supply circuit 350, which then causes the power supply circuit 350 to perform a voltage step-up process, thereby increasing the actual current value and actual voltage value of the light-emitting components, and preventing the presence of undervoltage light-emitting components on the backlight component 320, which would affect the luminous brightness and thus the display quality. When all light-emitting components are in an overvoltage state, a feedback signal indicating the overvoltage of the light-emitting components is promptly transmitted to the data transmission module 342. This allows the voltage control module 345 to promptly feedback the overvoltage condition of the light-emitting components to the power supply circuit 350, which then causes the power supply circuit 350 to perform a voltage step-down process, thereby reducing the actual current value and actual voltage value of the light-emitting components and reducing the power consumption of the light-emitting components. The distribution circuit 340 generates different control signals based on different power-on states to adjust the parameter value of the power supply signal output by the power supply circuit 350. The control process logic is simple, and the distribution circuit 340 does not require high computing power, thereby ensuring the low cost of the display device.

[0230] In some embodiments, the display device includes a plurality of distribution circuits 340, and at least some of the distribution circuits 340 are cascaded and connected to the controller 330 and the power supply circuit 350 respectively; wherein the voltage control modules 345 in two adjacent cascaded distribution circuits 340 are cascaded with each other, and the voltage control module 345 of the latter stage transmits the control signal through the voltage control module 345 of the previous stage.

[0231] refer to Figure 17 The circuit structure shown in the figure takes two distribution circuits 340 as an example, namely the first distribution circuit 340 and the second distribution circuit 340. The two distribution circuits 340 are cascaded. The connection method of the two distribution circuits 340 and the voltage control module 345 inside them is as follows: Figure 17 As shown (only the power supply circuit 350 and the voltage control module 345 inside the distribution circuit 340 are shown in the figure).

[0232] The communication interface 298 of the first distribution circuit 340 (current level) is connected to the communication interface 297 of the second distribution circuit 340 (adjacent next level) to transmit backlight driving data, the output end of the voltage control module 345 of the second distribution circuit 340 is connected to the receiving end of the voltage control module 345 of the first distribution circuit 340, the output end of the voltage control module 345 of the second distribution circuit 340 and the output end of the voltage control module 345 of the first distribution circuit 340 are connected in a cascade relationship, and the voltage control module 345 of the latter level transmits the control signal through the voltage control module 345 of the previous level.

[0233] In some embodiments, the display device includes multiple distribution circuits 340, and at least some of the distribution circuits 340 are respectively connected to the controller 330 and the power supply circuit 350; wherein the voltage control modules 345 in the multiple parallel distribution circuits 340 are respectively connected to the power supply circuit 350.

[0234] refer to Figure 18 The circuit structure shown in FIG. 3 takes two distribution circuits 340 as an example, namely a first distribution circuit 340 and a second distribution circuit 340. The two distribution circuits 340 are connected in parallel. The connection method of the two distribution circuits 340 and the voltage control module 345 inside them is as follows: Figure 18 As shown (only the power supply circuit 350 and the voltage control module 345 inside the distribution circuit 340 are shown in the figure). The output ends of the voltage control modules 345 inside the two parallel distribution circuits 340 are connected in parallel.

[0235] When two distribution circuits 340 are connected in parallel, the connection method of the two distribution circuits 340 and the voltage control module 345 inside them is as follows: Figure 18 As shown, the connection mode of the voltage control modules 345 in the two distribution circuits 340 and the generation mode of the feedback signal can be the same as Figure 17 Similarly, the feedback signal output by the first distribution circuit 340 may be transmitted to the second distribution circuit 340 , and the second distribution circuit 340 outputs a final feedback signal to the power supply circuit 350 .

[0236] In the above technical solution, when generating control signals, multiple voltage control modules 345 not only consider the control signals generated by the included control units, but also consider the control signals output by other voltage control modules 345 connected to their input terminals. In the cascade-connected voltage control modules 345, the parameter values of the signals that ultimately trigger the power supply circuit 350 are determined step by step, so that the calculation process is dispersed in each voltage control module 345, ensuring the simple control logic of the processing module in the voltage control module 345, and the voltage control modules 345 are directly connected to each other, without occupying the transmission bandwidth of the communication bus between the distribution circuits 340, and the voltage regulation of the power supply circuit 350 is faster.

[0237] In some embodiments, the display device includes one distribution circuit 340, and the distribution circuit 340 includes one voltage control module 345. The voltage control module 345 only needs to consider the feedback signal output control signal transmitted by the connected data transmission module 342, without considering the influence of the output signals of other voltage control modules 345, thereby simplifying the voltage regulation logic of the power supply circuit 350.

[0238] In some embodiments, reference Figure 19 In the circuit structure shown, the voltage control module 345 includes: a conversion unit 3451, which is connected to the data transmission module 342 and is configured to convert the received feedback signal and then output one of the first electrical signal and the second electrical signal.

[0239] The first electrical signal indicates that at least one light-emitting component is in an undervoltage state, and the second electrical signal indicates that each light-emitting component is in an overvoltage state. The first control signal and the second control signal have different voltage values or different current values.

[0240] In some embodiments, the conversion unit 3451 can be a digital-to-analog converter, configured to convert the received feedback signal and output a corresponding electrical signal, for example, for converting a digital feedback signal into an analog current signal or voltage signal.

[0241] In some embodiments, reference Figure 19 In the circuit structure shown, the voltage control module 345 includes: a regulation unit 3452, which is connected to the conversion unit 3451 and is configured to output a first control signal when a first electrical signal is received, and output a second control signal when a second electrical signal is received.

[0242] In some embodiments, the voltage value of the first control signal is different from the voltage value of the second control signal. The regulation unit 3452 may include a voltage source, which outputs different voltage signals under the control of the conversion unit 3451, or regulates the voltage of the connection end between the power supply circuit 350 and the voltage control module 345 under the control of the conversion unit 3451.

[0243] refer to Figure 20 In the circuit structure shown, one end of the voltage source is connected to the output end of the voltage control module 345 , and the other end of the voltage source is grounded. Under the control of the conversion unit 3451 , the voltage source lowers or raises the voltage of the connection end.

[0244] In some embodiments, the current value of the first control signal is different from the current value of the second control signal. The control unit 3452 can be a current source, which outputs different current signals under the control of the conversion unit 3451, or regulates the current at the connection end between the power supply circuit 350 and the voltage control module 345 under the control of the conversion unit 3451.

[0245] refer to Figure 21 In the circuit structure shown, one end of the current source is connected to the output end of the voltage control module 345 , and the other end of the current source is grounded. Under the control of the conversion unit 3451 , the current source lowers or increases the current at the connection end.

[0246] In some embodiments, the voltage value of the first control signal is different from the voltage value of the second control signal, and the voltage control module 345 may further include a controllable switch device 3453 .

[0247] Continue to refer Figure 20 In the circuit structure shown, the first end of the controllable switch device 3453 is connected to the output end of the control unit 3452, and the second end of the controllable switch device 3453 is connected to the output end of the voltage control module 345. The controllable switch device 3453 is configured as follows:

[0248] It is turned on when the connected regulating unit 3452 outputs the first control signal, regulating the voltage at the connection end between the power supply circuit 350 and the voltage control module 345 to be in a first level state, instructing the power supply circuit 350 to boost the voltage.

[0249] When the connected control unit 3452 outputs the second control signal and at least one other voltage control module 345 connected to the voltage control module 345 where the controllable switch device 3453 is located also outputs the second control signal, the controllable switch device 3453 is turned off, and the voltage at the connection terminal between the power supply circuit 350 and the voltage control module 345 is regulated to a second level state, instructing the power supply circuit 350 to reduce the voltage. The first level state and the second level state are different.

[0250] In some embodiments, the controllable switch device 3453 may be a P-type TFT device, a controlled end of which is connected to the output end of the control unit 3452 .

[0251] In some embodiments, the controllable switch device 3453 may be a diode, the anode of the diode is connected to the power supply circuit 350 , and the cathode of the diode is connected to the output end of the control unit 3452 .

[0252] refer to Figure 22The circuit structure shown is further explained by taking the controllable switch device 3453 as a diode, the control unit 3452 as a voltage source, and the feedback data where 1 represents overvoltage and 0 represents undervoltage; and the voltage value of the first control signal is less than the voltage value of the second control signal as an example:

[0253] The conversion unit 3451 receives feedback data from the corresponding data transmission module 342 and performs conversion processing and logical operations based on the feedback data, so that the control unit 3452 determines the power-on status of the light-emitting component corresponding to the data transmission module 342 and outputs the corresponding control signal.

[0254] When the conversion unit 3451 receives feedback data 0, it converts and processes the feedback data 0 into a signal recognizable by the control unit 3452, so that the control unit 3452 outputs a low-level signal, the controllable switch device 3453 is turned on, and the voltage of the connection end between the power supply circuit 350 and the voltage control module 345 is lowered, triggering the power supply circuit 350 to perform a voltage boost process.

[0255] When the conversion unit 3451 receives the feedback data 1, it converts the feedback data 1 into a signal recognizable by the control unit 3452, causing the control unit 3452 to output a high-level signal. When the control units 3452 of at least one other voltage control module 345 connected to the voltage control module 345 in which the controllable switch device 3453 is located all output high-level signals, the controllable switch device 3453 is turned off, and the voltage at the connection terminal between the power supply circuit 350 and the voltage control module 345 remains high, triggering the power supply circuit 350 to perform a voltage reduction process.

[0256] In the above technical solution, a controllable switch device 3453 is provided in the voltage control module 345, connected between the output terminal of the voltage control module 345 and the output terminal of the control unit 3452. Based on the control signal output by the control unit 3452 and the control signals output by other voltage control modules 345, the conductive state of the controllable switch device 3453 is regulated, thereby regulating the voltage step-up and step-down of the power supply circuit 350. The above-mentioned control method for the power supply circuit 350 is implemented by screening the circuit structure composed of the controllable switch device 3453 and the control unit 3452. There is no need to provide an additional processor in the distribution circuit 340 to calculate the feedback signal. The control logic is simple, ensuring the low cost of the distribution circuit 340.

[0257] In some embodiments, when the on-voltage of the controllable switch device 3453 is less than the product of the voltage values of the first control signal and the second control signal and a preset ratio, since the on-voltage of the controllable switch device 3453 is less than the product of the voltage value of the control signal and the preset ratio, the on-voltage drop of the controllable switch device 3453 relative to the voltage value of the control signal is negligible, and the voltage at the connection end does not consider the on-voltage of the controllable switch device 3453, which can simplify the calculation process and improve calculation efficiency.

[0258] In some embodiments, when the on-state voltage of the controllable switch device 3453 is greater than or equal to the product of the voltage values of the first control signal, the second control signal and a preset ratio, the on-state voltage drop of the controllable switch device 3453 will affect the voltage at the connection end. The voltage at the connection end takes into account the on-state voltage of the controllable switch device 3453, which can ensure accurate adjustment of the output voltage value of the power supply circuit 350.

[0259] In some embodiments, the current value of the first control signal is different from the current value of the second control signal, and the voltage control module 345 may further include a processing unit 3454 .

[0260] refer to Figure 23 In the circuit structure shown, the output terminal of the control unit 3452 is connected to the input terminal of the processing unit 3454, and the output terminal of the processing unit 3454 is connected to the control terminal of the power supply circuit 350. The processing unit 3454 is configured to output a voltage regulation trigger signal based on the current value of the control signal output by the control unit 3452 to trigger the voltage regulation state of the power supply circuit 350.

[0261] In some embodiments, the display device includes multiple voltage control modules 345, including a first voltage control module 345 and a second voltage control module 345. The output of the first voltage control module 345 is connected to the input of the processing unit 3454 in the second voltage control module 345.

[0262] The processing unit 3454 in the second voltage control module 345 is configured to obtain the first voltage regulation trigger signal output by the first voltage control module 345, obtain the control signal output by the control unit 3452 in the second voltage control module 345, and output a second voltage regulation trigger signal based on the current value of the control signal and the current value of the first voltage regulation trigger signal; the current value of the second voltage regulation trigger signal is the second feedback current value.

[0263] When two distribution circuits 340 are connected in cascade, the connection between the two distribution circuits 340 and the voltage control modules 345 therein is as follows: Figure 24As shown, the communication interface of the first distribution circuit 340 (upper level) is connected to the communication interface of the second distribution circuit 340 (lower level) to transmit backlight driving data, the output end of the voltage control module 345 of the second distribution circuit 340 is connected to the receiving end of the voltage control module 345 of the first distribution circuit 340, the receiving end of the voltage control module 345 of the first distribution circuit 340 is connected to the other output end of the processing unit 3454 in the voltage control module 345, the processing unit 3454 in the voltage control module 345 of the first distribution circuit 340 processes the voltage regulation trigger signal output by the first distribution circuit 340 and the control signal generated by the first distribution circuit 340, and outputs the final output voltage regulation trigger signal to the power supply circuit 350.

[0264] When two distribution circuits 340 are connected in parallel, the connection method of the two distribution circuits 340 and the voltage control module 345 inside them is as follows: Figure 25 As shown, the connection mode of the voltage control modules 345 in the two distribution circuits 340 and the generation mode of the voltage regulation trigger signal can be the same as Figure 24 Similarly, the voltage regulation trigger signal output by the first distribution circuit 340 may be transmitted to the second distribution circuit 340 , and the second distribution circuit 340 outputs the final voltage regulation trigger signal to the power supply circuit 350 .

[0265] In the above technical solution, when generating a voltage regulation trigger signal, multiple voltage control modules 345 not only consider the control signal generated by the included control unit 3452, but also consider the voltage regulation trigger signal output by other voltage control modules 345 connected to their input ends. In the cascade-connected voltage control modules 345, the voltage value of the final voltage regulation trigger signal is determined step by step so that the calculation process is dispersed in each voltage control module 345, ensuring the simple control logic of the processing module in the voltage control module 345, and the voltage control modules 345 are directly connected to each other, without occupying the transmission bandwidth of the communication bus between the distribution circuits 340, and the voltage regulation of the power supply circuit 350 is faster.

[0266] In some embodiments, the processing unit 3454 in the second voltage control module 345 is configured to select a target electrical signal from the control signal and the first voltage regulation trigger signal as the second voltage regulation trigger signal based on the current value of the control signal and the current value of the first voltage regulation trigger signal.

[0267] refer to Figure 26 The circuit structure shown is further explained by taking the control unit 3452 as the current source, the feedback data, 1 represents overvoltage, 0 represents undervoltage; and the current value of the first control signal is less than the current value of the second control signal as an example:

[0268] The conversion unit 3451 receives feedback data from the corresponding data transmission module 342 and performs conversion processing and logical operations based on the feedback data, so that the control unit 3452 determines the power-on status of the light-emitting component corresponding to the data transmission module 342 and outputs the corresponding control signal.

[0269] When the conversion unit 3451 receives the feedback data 0, it converts the feedback data 0 into a signal recognizable by the control unit 3452, so that the control unit 3452 outputs a first control signal of a low current.

[0270] When the conversion unit 3451 receives the feedback data 1, it converts the feedback data 1 into a signal that can be identified by the control unit 3452, so that the control unit 3452 outputs a second control signal of a high current.

[0271] When the processing unit 3454 obtains a control signal, it outputs the control electrical signal as a voltage regulation trigger signal. When the first control electrical signal is output as the voltage regulation trigger signal, it triggers the power supply circuit 350 to perform a voltage boost process. When the second control electrical signal is output as the voltage regulation trigger signal, it triggers the power supply circuit 350 to perform a voltage reduction process.

[0272] When the processing unit 3454 obtains the control signal and the voltage regulation trigger signal output by other voltage processing modules, it selects the control electrical signal with the minimum current value from multiple signals as the voltage regulation trigger signal. When the current of the voltage regulation trigger signal is small, it triggers the power supply circuit 350 to perform a voltage boost process. When the current of the voltage regulation trigger signal is large, it triggers the power supply circuit 350 to perform a voltage reduction process.

[0273] In the above technical solution, the processing unit 3454 determines the target electrical signal that most needs to be adjusted to the power-on state from the control electrical signal and the received voltage adjustment trigger signal through a preset screening mechanism, so as to trigger the power supply circuit 350 to adjust the voltage, so that each partition on the backlight component 320 meets the luminous requirements. The above circuit structure can effectively adjust the output voltage of the power supply circuit 350 through simple control logic, which not only improves the adjustment efficiency, but also ensures the low cost of the distribution circuit 340.

[0274] In some embodiments, the driving group 321 is further configured to detect the power-on status of the connected light-emitting components and output a feedback signal representing the power-on status to the data transmission module 342 .

[0275] In some embodiments, the distribution circuit 340 further includes a register 343 connected to each data transmission module 342 and configured to store feedback signals transmitted by the data transmission module 342 for the controller 330 to read the status of the backlight assembly 320 .

[0276] In some embodiments, the register 343 may also store setting information of the distribution circuit 340 .

[0277] In the above technical solution, the register 343 can save the setting information of the distribution circuit 340, and can also save the information of the power-on status of the light-emitting component obtained by the driving group 321 connected to the data transmission module 342. When the controller 330 needs to adjust the operation of the display device based on the above information, it can read it from the register 343 in time to ensure the timeliness of the control.

[0278] In some embodiments, register 343 may be connected to controller 330 via a communication bus to transmit data stored in register 343 via the communication bus. In a scenario where there are multiple distribution circuits 340 connected in cascade, the communication bus is further configured to transmit the data stored in register 343 along a predetermined direction, where the predetermined direction is from the last distribution circuit 340 in the cascaded distribution circuits 340 to controller 330.

[0279] In some embodiments, the distribution circuit 340 further includes: a temperature detection module configured to detect temperature data of the backlight assembly 320; a register 343 connected to the temperature detection module and configured to store temperature data for the controller 330 to read the status of the backlight assembly 320.

[0280] Among them, the temperature data has a corresponding mapping relationship with the power-on status of the backlight component 320. The temperature data can not only be used by the controller 330 to control the reference conditions of the output voltage of the power supply circuit 350, but also can be used by the controller 330 to perform control reference adjustments of other functions, such as color temperature, current compensation, etc.

[0281] In the above technical solution, a temperature sampling unit is provided in the distribution circuit 340 to sample the temperature of the backlight assembly 320 , eliminating the need to provide an additional temperature sensor in the backlight assembly 320 , thereby simplifying the circuit structure and installation cost of the backlight assembly 320 .

[0282] In some embodiments, each driver group 321 includes at least one cascaded driver chip 3210. Each driver chip 3210 is connected to at least one light-emitting component, and each driver chip 3210 is connected to a different light-emitting component. Each driver chip 3210 drives at least one light-emitting component to emit light. The light-emitting components connected to the same driver chip 3210 can correspond to a backlight partition, or the light-emitting components connected to the same driver group 321 can correspond to a backlight partition.

[0283] In some embodiments, the distribution circuit 340 is configured to transmit backlight driving data to each driving group 321, and the backlight driving data includes at least one driving data segment, so that at least one driving chip 3210 in the driving group 321 each receives a driving data segment and drives the connected light-emitting component to emit light.

[0284] The driving data segment may include PWM duty cycle data, backlight current amplitude, etc. for driving the light-emitting components to emit light. After receiving the driving data segment, each driver chip 3210 may output a PWM control signal based on the duty cycle data and backlight current amplitude to control the light-emitting state of the connected light-emitting components.

[0285] In some embodiments, the distribution circuit 340 is connected to the driver group 321 via a serial bus, and the driver chips 3210 in the same driver group 321 are cascaded via the serial bus. The distribution circuit 340 can transmit the backlight driving data segment corresponding to each driver group 321 to each driver chip 3210 via the serial bus.

[0286] In the above technical solution, the backlight assembly 320 includes at least one driver group 321, each driver group 321 including at least one cascaded driver chip 3210. Multiple driver chips 3210 in the same driver group 321 can be connected to a data transmission path via a single serial bus, eliminating the need for each driver chip 3210 to be individually connected to the data transmission path via a cable. This effectively reduces the complexity of the backlight assembly 320. In solutions where the backlight assembly 320 includes multiple driver groups 321, each of the multiple driver groups 321 can be connected to multiple data transmission paths via multiple serial buses, enabling synchronization of the time at which each driver group 321 receives corresponding backlight driving data.

[0287] In some embodiments, some driving groups 321 may include only one driving chip 3210 , or each driving group 321 may include only one driving chip 3210 .

[0288] In some embodiments, the partial driving group 321 may include a plurality of driving chips 3210 connected in parallel.

[0289] refer to Figure 27 In the circuit structure shown, multiple driver chips 3210 in the driver group 321 are connected in parallel, the input terminals DIN of the driver chips 3210 in the driver group 321 are electrically connected in parallel, and the output terminals DOUT of the driver chips 3210 are electrically connected in parallel.

[0290] In some embodiments, the input terminal DIN is configured to receive the backlight driving data segment output by the distribution circuit 340 .

[0291] In some embodiments, the output terminal DOUT is configured to output a feedback signal to the distribution circuit 340 .

[0292] In the above circuit structure, multiple driver chips 3210 are connected in parallel to help improve data transmission efficiency.

[0293] In some embodiments, at least part of the driver group 321 may include a plurality of cascaded driver chips 3210 .

[0294] refer to Figure 27 In the circuit structure shown, multiple driver chips 3210 in the driver group 321 are cascaded, the input terminal DIN of the driver chip 3210 located at the first position in the driver group 321 is electrically connected to the controller 330250, and the output terminal DOUT is electrically connected to the input terminal DIN of the adjacent next-level driver chip 3210, and so on, until it is electrically connected to the input terminal DIN of the driver chip 3210 located at the last position.

[0295] In some embodiments, the plurality of driving chips 3210 transmit feedback signals to the distribution circuit 340 in the reverse direction of the driving data transmission path.

[0296] In some embodiments, the output terminal DOUT of the last driver chip 3210 is electrically connected to the distribution circuit 340 , and the output terminal DOUT of the last driver chip 3210 is configured to output a feedback signal to the distribution circuit 340 .

[0297] In the above circuit structure, the cascade connection of multiple driver chips 3210 helps to save the number of configured addresses.

[0298] In some embodiments, the distribution circuit 340 and the backlight assembly 320 are respectively disposed on a light board.

[0299] In some embodiments, the number of light boards is one, and all distribution circuits 340 and backlight components 320 are disposed on the same light board, thereby facilitating wiring and reducing costs.

[0300] In some embodiments, there are multiple light boards, and the backlight components 320 connected to the same distribution circuit 340 are set on the same light board; multiple distribution circuits 340 connected to the controller 330 are respectively set on different light boards, so as to facilitate wiring and reduce costs and interference.

[0301] In some embodiments, there are multiple light boards, and the backlight components 320 of the same backlight partition and the connected distribution circuits 340 are arranged on the same light board, thereby facilitating wiring and reducing costs and interference.

[0302] In the above technical solution, the distribution circuit 340 and the backlight assembly 320 are respectively arranged on the lamp board, and can be connected to the driving chip 3210 through the inter-board wiring of the lamp board. There is no need to set a connecting wire between the distribution circuit 340 and the lamp board, which not only saves the number of circuit boards in the display device, but also reduces the number of connecting wires, making the assembly of the display device simpler.

[0303] In any combination of one or more of the above embodiments, when there are multiple distribution circuits 340, there are various connection modes between the distribution circuits 340, which are further explained below:

[0304] In some embodiments, there are multiple distribution circuits 340, and at least one distribution circuit 340 is connected to the controller 330; wherein: at least some of the distribution circuits 340 are cascaded, and each cascaded distribution circuit 340 respectively receives the backlight driving data transmitted by the previous level object, and transmits part of the backlight driving data to the connected driving group 321, and transmits another part of the backlight driving data to the connected distribution circuit 340.

[0305] refer to Figure 28 The circuit structure shown (two distribution circuits 340 are used as an example in the figure, which is for illustration only and not limiting), at least two distribution circuits 340 are cascaded, wherein the first-stage distribution circuit 340 is electrically connected to the communication interface of the controller 330 through the communication bus, that is, the input end of the first-stage distribution circuit 340 is electrically connected to the communication interface of the controller 330 through the communication bus, and the input end of the non-first-stage distribution circuit 340 is electrically connected to the output end of the previous-stage distribution circuit 340.

[0306] In the above technical solution, the cascading of the distribution circuit 340 can reduce the number of communication ports of the controller 330 electrically connected to the distribution circuit 340 , thereby reducing the cost of the controller 330 .

[0307] In some embodiments, the communication bus is configured to transmit the backlight driving data along a first direction, which is a direction from the controller 330 to the last distribution circuit 340 in the cascaded distribution circuit 340 .

[0308] In the above technical solution, the communication bus can set the transmission order of the backlight driving data between the distribution circuits 340, so that the controller 330 can be set to generate corresponding backlight driving data based on the transmission order to ensure the accuracy of display.

[0309] In some embodiments, there are multiple distribution circuits 340 , and at least one distribution circuit 340 is connected to the controller 330 ; wherein: at least some of the distribution circuits 340 are connected in parallel, and each parallel distribution circuit 340 receives the backlight driving data transmitted by the controller 330 .

[0310] refer to Figure 29 In the circuit structure shown (two distribution circuits 340 are used as an example in the figure, which is for illustration only and not limiting), at least two distribution circuits 340 are connected in parallel, wherein each parallel distribution circuit 340 is electrically connected to the communication interface of the controller 330 through a communication bus, that is, the input end of the parallel distribution circuit 340 is electrically connected to the communication interface of the controller 330 through the communication bus.

[0311] In the above technical solution, the parallel connection of the distribution circuits 340 can increase the transmission speed from the controller 330 to the backlight assembly 320, which helps to increase the frame rate of the display device and thus improve the display quality.

[0312] In some embodiments, there are multiple distribution circuits 340, and at least one distribution circuit 340 is connected to the controller 330; wherein: at least some of the distribution circuits 340 are cascaded, and each cascaded distribution circuit 340 respectively receives the backlight driving data transmitted by the previous level object, and transmits part of the backlight driving data to the connected driving group 321, and transmits another part of the backlight driving data to the connected distribution circuit 340; at least some of the distribution circuits 340 are connected in parallel, and each parallel distribution circuit 340 respectively receives the backlight driving data transmitted by the controller 330.

[0313] refer to Figure 30 In the circuit structure shown, at least one distribution circuit 340 is connected in cascade to form a distribution group. Each distribution group includes different distribution circuits 340. At least two distribution groups are connected in parallel. The first ends of the first-stage distribution circuits 340 in each cascaded distribution group are connected.

[0314] In some embodiments, in the distribution group, each distribution circuit 340 is connected to the same number of driver chips 3210 in the driver group 321 , so that the length of the backlight driving data transmitted by each distribution circuit 340 is the same, which facilitates control.

[0315] In some embodiments, in the distribution group, the number of driving chips 3210 in the driving group 321 connected to each distribution circuit 340 is not exactly the same, so that the difference between the number of output terminals of the driving chips 3210 connected to the distribution group and the number of light-emitting components is less than a preset difference, thereby preventing the driving force of the distribution group from being too redundant.

[0316] In the above technical solution, multiple distribution circuits 340 work together to handle a larger number of backlight partitions. This significantly reduces the capacity of each distribution circuit 340, ensuring compatibility with different numbers of partitions while avoiding the issue of redundant specifications caused by the large number of backlight partitions, thereby reducing costs. For example, a single distribution circuit 340 can support the transmission of backlight drive data corresponding to 1000 partitions. If the backlight assembly 320 corresponds to 1000 partitions, one distribution circuit 340 can be provided. If the backlight assembly 320 corresponds to 2000 partitions, two distribution circuits 340 can be provided, ensuring maximum utilization of the distribution circuits 340.

[0317] In some embodiments, reference Figure 31In the circuit structure shown, the controller 330 is configured with a control interface and a first communication interface, the control interface is configured to transmit a selection signal, and the first communication interface is configured to transmit backlight driving data; wherein, the distribution circuit 340 connected to the controller 330 is configured with a selection interface and a second communication interface; the selection interface is connected to the control port to receive the selection signal; the second communication interface is connected to the first communication interface to receive backlight driving data; the distribution circuit 340 connected to the controller 330 is configured to transmit backlight driving data when the selection signal and backlight driving data are received.

[0318] The controller 330 is configured to output a selection signal from the control interface and output backlight driving data from the first communication interface; wherein the selection signal includes second identification information, and the second identification information corresponding to the distribution circuit 340 in different driving groups 321 is different, and the second identification information is used to represent the identity information of each driving group 321, such as address information.

[0319] The distribution circuit 340 connected to the control interface of the controller 330 is configured to obtain backlight driving data through the second communication interface, and output the backlight driving data when the selection signal corresponding to the distribution circuit 340 is obtained through the selection interface; and not output the backlight driving data when the selection signal corresponding to the distribution circuit 340 is not obtained.

[0320] In some embodiments, the parallel distribution circuits 340 are all connected to the same control interface of the controller 330 to save the number of control terminals, and each distribution group 221 can only be selected one by one to obtain backlight driving data.

[0321] In some embodiments, the parallel distribution circuits 340 are connected to different control interfaces of the controller 330 to improve data transmission efficiency, and multiple distribution groups can obtain backlight driving data simultaneously.

[0322] In the above technical solution, the controller 330 is provided with a first communication interface and a control interface, and at least one distribution circuit 340 in the parallel distribution group is provided with a selection interface and a second communication interface. The distribution circuit 340 connected to the controller 330 receives a selection signal through the selection interface to determine whether to receive the backlight driving data sent by the controller 330, thereby saving the number of communication ports of the controller 330 and ensuring the accuracy of the backlight driving data transmission.

[0323] In some embodiments, reference Figure 32 In the circuit structure shown, at least one distribution circuit 340 is connected to the controller 330 via an SPI (Serial Peripheral Interface) bus 360 .

[0324] In the above technical solution, controller 330 can be connected to one distribution circuit 340 or multiple distribution circuits 340 simultaneously via SPI bus 360, facilitating the use of multiple distribution circuits 340. SPI bus 360 has a high transmission speed, which helps reduce data transmission time and delays. Furthermore, the communication protocol of SPI bus 360 is relatively simple, which helps simplify the wiring and circuit design between controller 330 and distribution circuit 340.

[0325] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0326] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: The display device comprises: Display panel; A system-on-chip, connected to the display panel, configured to generate backlight brightness data and display data based on image data, and output backlight driving data based on an AM driving protocol based on the backlight brightness data; a timing controller, connected to the system-level chip and the display panel respectively, and configured to process the display data so that the display data obtained by the display panel is the data corresponding to the display panel and display the picture; A backlight assembly, located on a side away from the display surface of the display panel, comprising: at least one light-emitting component; at least one driving group, each driving group being connected to at least one light-emitting component, and different driving groups being connected to different light-emitting components; Distribution circuits, including: At least one data transmission path is respectively connected to the system-level chip and the at least one driver group, and the data transmission path is configured to receive the backlight driving data and transmit the backlight driving data to the connected driver group, so that the driver group drives the connected light-emitting component to provide backlight.

2. The display device according to claim 1, wherein The distribution circuit includes: a data receiving module connected to the system-on-chip and configured to receive at least one backlight driving data output by the system-on-chip; At least one data transmission module, each of which is connected to the data receiving module to form the data transmission path, and the data transmission module is configured to transmit the backlight driving data to the driving group after receiving the backlight driving data.

3. The display device according to claim 2, wherein There are multiple data transmission modules; The data receiving module is configured to receive a plurality of the backlight driving data, and transmit the backlight driving data to the corresponding data transmission module each time the backlight driving data is received according to the timing of receiving the backlight driving data.

4. The display device according to claim 2, wherein: There are multiple data transmission modules; In which, the data transmission module is also configured to receive a frame start signal, and read the data transmitted by the data receiving module after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal; or transmit the received backlight driving data to the connected driving group after a preset delay period starting from the initial moment corresponding to the reception of the frame start signal.

5. The display device according to claim 4, wherein: A plurality of the data transmission modules receive the frame start signal at the same time, and different data transmission modules have different delay durations.

6. The display device according to claim 4, wherein: The distribution circuit further includes: The synchronization modules are respectively connected to the plurality of data transmission modules and are configured to output the frame start signal to each of the data transmission modules when a synchronization signal is received.

7. The display device according to claim 2, wherein: The driving group is further configured to detect the power-on status of the connected light-emitting component and output a feedback signal representing the power-on status to the data transmission module; The display device further includes: a power supply circuit, connected to the light-emitting component and configured to provide a power supply signal to the light-emitting component; Wherein, the distribution circuit further includes: The voltage control module is connected to each of the data transmission modules and is configured to receive the feedback signal transmitted by the data transmission module and output a control signal to the power supply circuit based on the feedback signal to control the power supply circuit to adjust the parameter value of the power supply signal.

8. The display device according to claim 7, wherein: The control signal includes a first control signal and a second control signal, the first control signal instructs the power supply circuit to output the power supply signal after boosting the voltage, and the second control signal instructs the power supply circuit to output the power supply signal after reducing the voltage; wherein the voltage control module is configured to output the first control signal when the feedback signal feeds back that the state of at least one of the light-emitting components is in an undervoltage state; and output the second control signal when the feedback signal feeds back that the state of each of the light-emitting components is in an overvoltage state.

9. The display device according to claim 8, wherein The voltage control module includes: a conversion unit, connected to the data transmission module, and configured to convert the received feedback signal and output one of a first electrical signal and a second electrical signal; a control unit, connected to the conversion unit, and configured to output the first control signal when receiving the first electrical signal, and output the second control signal when receiving the second electrical signal; Among them, the first electrical signal indicates that the state of at least one of the light-emitting components is in an undervoltage state, and the second electrical signal indicates that the state of each light-emitting component is in an overvoltage state; the first control signal and the second control signal have different voltage values or different current values.

10. The display device according to claim 7, wherein There are multiple distribution circuits, and at least some of the distribution circuits are cascaded and connected to the system-on-chip and the power supply circuit respectively; The voltage control modules in two adjacent cascaded distribution circuits are cascaded to each other, and the voltage control module of the latter stage transmits the control signal through the voltage control module of the former stage.

11. The display device according to claim 7, wherein There are multiple distribution circuits, and at least some of the distribution circuits are connected to the system-level chip and the power supply circuit respectively; The voltage control modules in the plurality of distribution circuits connected in parallel are respectively connected to the power supply circuit.

12. The display device according to claim 2, wherein The driving group is further configured to detect the power-on status of the connected light-emitting component and output a feedback signal representing the power-on status to the data transmission module; Wherein, the distribution circuit further includes: The register is connected to each of the data transmission modules and is configured to store the feedback signal transmitted by the data transmission module so that the system-level chip can read the power-on status of the backlight assembly.

13. The display device according to claim 2, wherein The distribution circuit further includes: a temperature detection module, configured to detect temperature data of the backlight assembly; The register is connected to the temperature detection module and is configured to store the temperature data so that the system-level chip can read the state of the backlight assembly.

14. The display device according to claim 1, wherein Each of the driving groups includes at least one cascade of driving chips, each of the driving chips is connected to at least one of the light-emitting components, and each of the driving chips is connected to a different light-emitting component; The distribution circuit is configured to transmit the backlight driving data to each of the driving groups, wherein the backlight driving data includes at least one driving data segment, so that at least one driving chip in the driving group receives one driving data segment and drives the connected light-emitting component to emit light.

15. The display device according to claim 1, wherein The distribution circuit and the backlight assembly are respectively arranged on a light board.

16. The display device according to any one of claims 1 to 15, characterized in that: There are multiple distribution circuits, and at least one distribution circuit is connected to the system-on-chip; wherein: At least some of the distribution circuits are cascaded, and each of the cascaded distribution circuits respectively receives the backlight driving data transmitted by the previous stage object, and transmits part of the backlight driving data to the connected driving group, and transmits another part of the backlight driving data to the connected distribution circuit; and / or, At least some of the distribution circuits are connected in parallel, and each of the parallel distribution circuits receives the backlight driving data transmitted by the system-level chip respectively.

17. The display device according to claim 16, wherein: The system-on-chip is configured with a control interface and a first communication interface, the control interface is configured to transmit a strobe signal, and the first communication interface is configured to transmit the backlight driving data; Wherein, the distribution circuit connected to the system-on-chip is configured with a strobe interface and a second communication interface; The strobe interface is connected to the control interface to receive the strobe signal; the second communication interface is connected to the first communication interface to receive backlight driving data; The distribution circuit connected to the system-on-chip is configured to transmit the backlight driving data when receiving the strobe signal and the backlight driving data.

18. The display device according to claim 16, wherein The at least one distribution circuit is connected to the system-on-chip via an SPI bus.

19. A display device, characterized in that: The display device comprises: Display panel; The system-on-chip is configured to output backlight brightness data and display data based on the image data; A timing controller is connected to the system-level chip and the display panel respectively, and is configured to process the display data so that the display data obtained by the display panel is the data corresponding to the display panel and displays the picture; and is also configured to convert the backlight brightness data into backlight driving data based on the AM driving protocol; A backlight assembly, located on a side away from the display surface of the display panel, comprising: at least one light-emitting component; at least one driving group, each driving group being connected to at least one light-emitting component, and different driving groups being connected to different light-emitting components; Distribution circuits, including: At least one data transmission path is respectively connected to the timing controller and the at least one driving group, and the data transmission path is configured to receive the backlight driving data and transmit the backlight driving data to the connected driving group, so that the driving group drives the connected light-emitting component to provide backlight.

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