Display device

Abstract

The invention provides a display device which comprises a display panel, a controller, a backlight assembly and a distribution circuit, the backlight assembly comprises a plurality of driving groups and a plurality of light-emitting unit groups, each driving group comprises at least one driving chip, the first end of the distribution circuit is electrically connected with the controller, the second end of the distribution circuit is electrically connected with the at least one driving group, and the first end of the distribution circuit is electrically connected with the at least one light-emitting unit group. When the controller controls the backlight assembly to emit light, the controller processes the image data to generate driving data, and the distribution circuit transmits the driving data to the corresponding driving group so as to drive the corresponding light emitting unit group to emit light. The distribution circuit can separate and process operations such as data transmission needing high-frequency support of the controller, the requirement of the controller for the dominant frequency is reduced, the processing process of the distribution circuit and the controller is more targeted, the joint cost is lower than the cost of a controller with high comprehensive requirement for the dominant frequency and data processing computing power in the related technology, and the reliability of the controller is improved. Therefore, the cost of the display equipment can be reduced.

Description

Technical Field

[0001] Some embodiments of the present application relate to display technology, and more specifically, to a display device. Background Art

[0002] A display device is a device that displays images and / or user interfaces. The display device includes a controller, a display panel, and a backlight assembly. The backlight assembly includes a driving circuit and a light-emitting unit group. Each light-emitting unit group includes at least one lamp bead. The driving circuit drives each light-emitting unit group to emit light.

[0003] As the number of light-emitting unit groups increases, the controller in the display device processes more image data for each frame, and the frequency of sending and receiving electrical signals between the controller and the backlight assembly also increases, resulting in high costs for the display device. How to reduce the cost of the display device has become a research focus. Summary of the invention

[0004] Some embodiments of the present application provide a display device, aiming to solve the problem of high cost of display devices.

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

[0006] A controller configured to obtain image data, generate backlight brightness data and display data; output the display data; and output drive data based on the backlight brightness data;

[0007] A display panel, electrically connected to the controller, configured to display a picture based on the display data;

[0008] a distribution circuit, wherein a first end of the distribution circuit is electrically connected to the controller, and the distribution circuit is configured to, after obtaining the driving data, output the driving data from a second end of the distribution circuit;

[0009] A backlight assembly is arranged on a side away from the display surface of the display panel, and the backlight assembly includes:

[0010] A plurality of driving groups, wherein the second end of the distribution circuit is electrically connected to the first end of at least one driving group; the driving group comprises:

[0011] at least one driving chip, the input end of the driving chip being electrically connected to the first end of the driving group, the driving chip being configured to obtain a driving data segment corresponding to the driving chip in the driving data, and output a driving signal based on the driving data segment; the driving data includes at least one driving data segment, and different driving chips correspond to different driving data segments;

[0012] There are multiple light emitting unit groups, the driving chip is electrically connected to at least one of the light emitting unit groups, and the light emitting unit groups are configured to emit light based on the driving signal; wherein different driving chips are electrically connected to different light emitting unit groups.

[0013] In the above technical scheme, the display device includes a display panel, a controller, a backlight assembly, and a distribution circuit. The backlight assembly includes multiple drive groups and multiple light-emitting unit groups. The drive group includes at least one drive chip. The first end of the distribution circuit is electrically connected to the controller, and the second end of the distribution circuit is electrically connected to at least one drive group. When the controller controls the backlight assembly to emit light, the controller processes the image data to generate drive data, and the distribution circuit transmits the drive data to the corresponding drive group to drive the corresponding light-emitting unit group to emit light. In the above circuit structure, the distribution circuit can separate operations such as data transmission that require high-frequency support from the controller for processing, thereby reducing the controller's demand for the main frequency. 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 technology that has high comprehensive requirements for the main frequency and data processing computing power, thereby reducing the cost of the display device.

[0014] In some embodiments, the distribution circuit comprises:

[0015] A data transmission module, wherein a first end of the data transmission module is electrically connected to the controller, and a second end of the data transmission module is electrically connected to a driving group corresponding to the data transmission module, and the data transmission module is configured to output the preset number of driving data segments to the driving chips in the connected driving group after acquiring the preset number of driving data segments;

[0016] Among them, different data transmission modules are electrically connected to different drive groups;

[0017] The driving data obtained by the distribution circuit includes the preset number of driving data segments, and the preset number of driving data segments includes the at least one driving data segment.

[0018] In the above technical solution, after the data transmission module in the distribution circuit obtains a preset number of driving data segments, it can transmit data to the driving chip in the driving group to which it is connected. Compared with the backlight controller obtaining all the driving data and then transmitting the data to the driving chip, this reduces the data transmission delay and improves the synchronization between the backlight component's light emission and the display panel's display.

[0019] In some embodiments, the number of the data transmission modules is multiple;

[0020] The first ends of at least two of the data transmission modules are electrically connected;

[0021] The data transmission module sets corresponding first identification information, and different data transmission modules connected to the first end have different corresponding first identification information;

[0022] The data transmission module is configured to receive the preset number of driving data segments based on the first identification information corresponding to the data transmission module; the driving data segment includes the first identification information corresponding to the data transmission module.

[0023] In the above technical solution, among the multiple data transmission modules, the first ends of at least two of the data transmission modules are electrically connected, which can reduce the number of wirings in the distribution circuit and reduce production costs.

[0024] In some embodiments, the distribution circuit further comprises a data receiving module, wherein the data receiving module is provided with at least one output terminal;

[0025] The input end of the data receiving module is electrically connected to the first end of the distribution circuit, the output end of the data receiving module is electrically connected to the first end of the data transmission group corresponding to the output end, the data transmission group includes at least two data transmission modules connected at the first ends, and the first end of the data transmission module is electrically connected to the first end of the data transmission group; wherein different output ends of the data receiving module correspond to different electrically connected data transmission groups;

[0026] The data receiving module is configured to output driving data segments to the plurality of data transmission groups according to a preset data transmission sequence.

[0027] In the above technical solution, in the distribution circuit, the data receiving module is arranged between the controller and multiple data transmission modules, and the driving data received by the distribution circuit can be distributed among multiple data transmissions according to a preset data transmission order. The controller only needs to distribute the driving data to each distribution circuit, which can reduce the controller's workload on distributing driving data and improve the driving data distribution efficiency of the display device.

[0028] In some embodiments, the number of the data transmission modules is multiple;

[0029] The distribution circuit further comprises a data receiving module, wherein the data receiving module is provided with a plurality of output terminals;

[0030] In the distribution circuit, the input end of the data receiving module is electrically connected to the first end of the distribution circuit, and the output end of the data receiving module is electrically connected to a data transmission module corresponding to the output end; wherein different output ends of the data receiving module are electrically connected to different data transmission modules;

[0031] The data receiving module is configured to output driving data segments to the plurality of data transmission modules according to a preset data transmission sequence.

[0032] In the above technical solution, multiple output ends of the data transmission module and multiple output ends of multiple data transmission modules are electrically connected correspondingly, and each output end is electrically connected to a different data transmission module. The data transmission module can output the received driving data in parallel to improve the efficiency of driving data transmission.

[0033] In some embodiments, the data transmission module is provided with a corresponding first delay duration;

[0034] The data transmission module is configured to output the driving data segment obtained by the data transmission module after a first delay time corresponding to the data transmission module, starting from an initial time corresponding to a frame start signal.

[0035] In the above technical scheme, the accurate transmission time of each data transmission module is determined by the first delay time corresponding to each data transmission module, thereby determining the light-emitting time of the light-emitting unit group driven by the driving chip corresponding to the data transmission module, which can ensure that each driven light-emitting unit group in the backlight assembly can delay light emission. The delay is consistent with the scanning order of the liquid crystal molecules corresponding to the light-emitting unit group in the display panel, so as to ensure the accuracy of the display image of the display device.

[0036] In some embodiments, the plurality of data transmission modules include at least two first data transmission modules;

[0037] Different first data transmission modules correspond to different first delay durations.

[0038] In the above technical solution, the first delay durations set for at least two first data transmission modules in the distribution circuit are different, so that the first data transmission modules can stagger the durations for obtaining drive data. There is no need to set a large-capacity storage unit in the distribution circuit to ensure the consistency of the delay duration, thereby improving the utilization rate of the storage unit, reducing the capacity of the storage unit, and reducing the cost.

[0039] In some embodiments, the data transmission module is provided with a corresponding second delay time length;

[0040] The controller is configured to, starting from an initial moment corresponding to a frame start signal, output a driving data segment corresponding to the first data transmission module after a second delay time corresponding to the first data transmission module;

[0041] The second delay duration corresponding to the first data transmission module is determined based on the first delay duration corresponding to the first data transmission module and the transmission duration for transmitting the drive data segment, and the transmission duration is the duration for the controller to transmit the drive data segment from the controller to the first data transmission module.

[0042] In the above technical solution, the controller determines the second delay duration for transmitting data to each data transmission module through the first delay duration and the data transmission duration set by the data transmission module. The controller adjusts the sending time of the driving data corresponding to each data transmission module, which can improve the computing power utilization of the controller, simplify the operating logic of the distribution circuit, and ensure the low cost of the display device.

[0043] In some embodiments, the plurality of data transmission modules include at least two second data transmission modules;

[0044] The first delay durations corresponding to different second data transmission modules are the same.

[0045] In the above technical solution, the first delay durations corresponding to at least two second data transmission modules in the distribution circuit are the same, so as to reduce the number of distribution circuits that simultaneously transmit driving data to the driving chips connected to the light-emitting unit groups that emit light simultaneously, which helps to improve the centralization of the controller in transmitting data to the distribution circuits at different light-emitting moments.

[0046] In some embodiments, the second data transmission module is provided with a corresponding third delay time length;

[0047] The second data transmission module is configured to start receiving the driving data segment from the initial moment corresponding to the frame start signal after a third delay time corresponding to the second data transmission module;

[0048] Among them, different second data transmission modules correspond to different third delay durations.

[0049] In the above technical solution, the second data transmission module is provided with a corresponding third delay time, and the third delay time of the data received by the second data transmission module which outputs the driving data at the same time is set to be different, so as to perform time-sharing transmission of the data. This can adapt to the transmission logic used in the display device, and there is no need to adjust the data transmission logic between the controller and the distribution circuit. It can also ensure a low number of terminals for the controller to output driving data, thereby ensuring the low cost of the display device.

[0050] In some embodiments, the data transmission module is further configured to obtain status information from a connected driving group, wherein the status information is used to characterize a power-on status of a light-emitting unit group driven by the driving group connected to the data transmission module;

[0051] The display device further includes a power supply circuit, which is electrically connected to the display panel, the controller, and the light-emitting unit group in the backlight assembly, respectively, and is configured to provide a power supply electrical signal; the power supply electrical signal includes a first power supply electrical signal for supplying power to the light-emitting unit group;

[0052] The distribution circuit further comprises a voltage control module, an input end of the voltage control module is electrically connected to at least one data transmission module in the distribution circuit, and an output end of the voltage control module is electrically connected to the power supply circuit;

[0053] The voltage control module is configured to obtain status information output by a data transmission module connected to the voltage control module;

[0054] generating a feedback signal at an output terminal of the voltage control module based on the state information;

[0055] The power supply circuit is configured to adjust a voltage value of the first power supply electrical signal based on the feedback signal.

[0056] In the above technical solution, the distribution circuit also receives status information of the driving chip, and adjusts the voltage value of the first power supply electrical signal output by the power supply circuit based on the status information. Since the amount of data in the status information is large, the main frequency required for the device receiving the status information is relatively high. Since the main frequency set for the driving data transmission in the distribution circuit is relatively high, it can support the transmission requirements of the status information without increasing the cost. The distribution circuit separates the voltage regulation process from the controller, reduces the controller's demand for the main frequency, and reduces the cost of the display device.

[0057] In some embodiments, the status information includes an undervoltage status or an overvoltage status;

[0058] The voltage control module comprises a regulation module, an input end of the regulation module is electrically connected to at least one data transmission module in the distribution circuit, and an output end of the regulation module is electrically connected to an output end of the voltage control module;

[0059] The control module is configured as follows:

[0060] When the state information includes at least one of the undervoltage states, outputting a first control electrical signal;

[0061] When the state information only includes the overvoltage state, outputting a second control electrical signal;

[0062] The feedback signal is determined based on the first control electrical signal or the second control electrical signal;

[0063] The first control electrical signal and the second control electrical signal have different values.

[0064] In the above technical solution, in the voltage control module, the regulation module determines the power-on state of the light-emitting unit group based on the status information sampled by the connected data transmission module, and generates different control electrical signals based on different power-on states to determine different feedback signals at the output end of the voltage control module, and adjust the voltage value of the first power supply electrical signal output by the power supply circuit. The above regulation process has simple logic, and the distribution circuit does not require high computing power, thereby ensuring the low cost of the display device.

[0065] In some embodiments, the display device includes one voltage control module, and an output end of the regulation module is electrically connected to an output end of the voltage control module;

[0066] The first control electrical signal or the second control electrical signal output by the regulation module serves as the feedback signal.

[0067] In the above technical solution, in the display device, there is only one voltage control module, and the voltage control module only needs to consider the status information sampled by the connected data transmission module to generate a feedback signal, without considering the influence of the output signals of other voltage control modules, thereby simplifying the voltage regulation logic of the power supply circuit.

[0068] In some embodiments, the voltage value of the first control electrical signal is different from the voltage value of the second control electrical signal;

[0069] The display device comprises a plurality of voltage control modules, and output ends of the plurality of voltage control modules are electrically connected;

[0070] The voltage control module further comprises a controllable switch device, a first end of the controllable switch device is electrically connected to the output end of the regulation module, and a second end of the controllable switch device is electrically connected to the output end of the voltage control module;

[0071] The controllable switch device is configured to be turned on when the connected regulation module outputs the first control electrical signal, and output the feedback signal based on the first control electrical signal;

[0072] When the connected regulation module outputs the second control electrical signal and at least one other voltage control module electrically connected to the voltage control module where the controllable switch device is located outputs the first control electrical signal, the controllable switch device is turned off;

[0073] When the connected regulation module outputs the second control electrical signal and other voltage control modules electrically connected to the voltage control module where the controllable switch device is located all output the second control electrical signal, the controllable switch device is turned on and the feedback signal is output based on the second control electrical signal.

[0074] In the above technical solution, a controllable switch device is provided in the voltage control module, and is electrically connected in series between the output end of the voltage control module and the output end of the regulation module. Based on the control electrical signal output by the regulation module and the control electrical signal output by other voltage control modules, the conduction state of the controllable switch device is regulated to determine the feedback signal transmitted to the power supply circuit. The above feedback signal is determined by screening the circuit structure composed of the controllable switch devices. There is no need to set up an additional processor for the distribution circuit to calculate the feedback signal, thereby ensuring the low cost of the distribution circuit.

[0075] In some embodiments, the feedback signal includes a feedback voltage value, and the feedback voltage value is determined based on a voltage value of the first control electrical signal or the second control electrical signal transmitted by the turned-on controllable switch device.

[0076] In the above technical solution, in the display device, multiple controllable switching devices jointly determine the feedback voltage value of the feedback signal transmitted to the power supply circuit based on the first control electrical signal and / or the second control electrical signal with different voltage values, so as to regulate the voltage value of the first power supply electrical signal output by the power supply circuit. The above control variable is single and the control logic is simple, which is convenient for the low-cost design of the distribution circuit structure.

[0077] In some embodiments, the current value of the first control electrical signal is different from the current value of the second control electrical signal;

[0078] The voltage control module also includes a processing module;

[0079] The output end of the control module is electrically connected to the input end of the processing module, and the output end of the processing module is electrically connected to the control end of the power supply circuit;

[0080] The processing module is configured to determine a feedback current value based on a current value of a control electrical signal output by the regulation module;

[0081] The feedback signal includes the feedback current value.

[0082] In the above technical solution, a processing module is set in the voltage control module, which is electrically connected in series between the output end of the regulation module and the control end of the power supply circuit. The processing module determines the feedback current value based on the current values ​​of different control signals to adapt to the power supply circuit with current feedback regulation.

[0083] In some embodiments, the display device includes a plurality of voltage control modules, and the plurality of voltage control modules include a first voltage control module and a second voltage control module;

[0084] The output end of the first voltage control module is electrically connected to the input end of the processing module in the second voltage control module;

[0085] The processing module in the second voltage control module is configured to obtain a first feedback signal output by the first voltage control module;

[0086] Obtaining a control electrical signal output by a regulating module in the second voltage control module;

[0087] determining a second feedback current value based on the current value of the control electrical signal and the feedback current value of the first feedback signal;

[0088] A second feedback signal is output; the second feedback signal includes the second feedback current value.

[0089] In the above technical solution, when generating feedback signals, multiple voltage control modules not only consider the control electrical signals generated by the included regulation modules, but also consider the feedback signals output by other voltage control modules electrically connected to their input ends. In the cascade-connected voltage control modules, the voltage value of the final feedback signal is 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. Moreover, the voltage control modules are directly electrically 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.

[0090] In some embodiments, the processing module in the second voltage control module is configured to select a target electrical signal from the control electrical signal and the first feedback signal as the second feedback signal based on the current value of the control electrical signal and the feedback current value of the first feedback signal.

[0091] In the above technical solution, the processing module determines the target electrical signal that most needs to be adjusted for power-on status from the control electrical signal and the received feedback signal through a preset screening mechanism, and uses the target electrical signal as the feedback signal to adjust the power supply circuit, so that during the power-on adjustment of the light-emitting unit group corresponding to the target electrical signal, the power-on status of other light-emitting unit groups is also adjusted accordingly, so that each light-emitting unit group on the backlight assembly meets the light-emitting requirements. The above circuit structure can effectively adjust the output voltage of the power supply circuit through simple control logic, which not only improves the adjustment efficiency but also ensures the low cost of the distribution circuit.

[0092] In some embodiments, there are multiple distribution circuits, and at least two distribution circuits are cascaded via a communication bus, wherein a first-stage distribution circuit is electrically connected to a communication interface of the controller via the communication bus.

[0093] In the above technical solution, the cascading of the distribution circuits can reduce the number of communication ports of the controller electrically connected to the distribution circuits, thereby reducing the cost of the controller.

[0094] In some embodiments, the communication bus is configured to transmit the driving data along a first direction, where the first direction is a direction from the controller to a distribution circuit at a last stage in a cascade of distribution circuits.

[0095] In the above technical solution, the communication bus can set the transmission order of the driving data between the distribution circuits, so that the controller can be set to generate corresponding driving data based on the transmission order to ensure the accuracy of the display.

[0096] In some embodiments, the distribution circuit includes a register, the register is electrically connected to a data transmission module in the distribution circuit, the register is configured to store register information, the register information includes status information obtained by the data transmission module from the connected drive group;

[0097] The register is electrically connected to a first end of the distribution circuit, and the first end of the distribution circuit is electrically connected to the communication bus. The communication bus is also configured to transmit the register information along a second direction, and the second direction is from the last-stage distribution circuit in the cascaded distribution circuit to the controller.

[0098] In the above technical solution, a register is set in the distribution circuit, and the register information therein can save the setting information of the distribution circuit, and can also save the status information 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 from the register in time to ensure the timeliness of the control.

[0099] In some embodiments, the number of the distribution circuits is multiple;

[0100] At least one distribution circuit is cascade-connected to form a distribution group;

[0101] The distribution groups include different distribution circuits;

[0102] At least two distribution groups are electrically connected in parallel, wherein the first ends of the first-stage distribution circuits in each parallel distribution group are electrically connected, and the connection points of the at least two distribution groups are electrically connected via a communication bus and a communication interface of the controller.

[0103] In the above technical solution, the parallel connection of the distribution circuits can increase the transmission speed from the controller to the backlight assembly, which helps to increase the frame rate of the display device and thus improve the display quality.

[0104] In some embodiments, in each distribution group connected in parallel, at least one distribution circuit is provided with a gating end, and the at least one distribution circuit provided with the gating end includes a first-stage distribution circuit in the distribution group;

[0105] The strobe terminal is electrically connected to the control terminal of the controller;

[0106] The controller is configured to output a strobe signal from the control terminal and output the driving data from the communication interface; wherein the strobe signal includes second identification information, and the second identification information corresponding to the distribution circuits in different driving groups is different;

[0107] The distribution circuit electrically connected to the control terminal of the controller is configured to obtain the driving data;

[0108] When obtaining a strobe signal corresponding to the distribution circuit, outputting the driving data;

[0109] When the selection signal corresponding to the distribution circuit is not obtained, the driving data is not output.

[0110] In the above technical solution, at least one distribution circuit in the parallel distribution group is provided with a strobe terminal, and a strobe signal transmitted through the strobe terminal is used to determine whether to receive the drive data sent by the controller, thereby saving the number of communication ports of the controller and ensuring the accuracy of the drive data transmission.

[0111] In some embodiments, the driving group includes a plurality of distribution circuits provided with a strobe terminal;

[0112] In the same driving group, the second identification information corresponding to the plurality of distribution circuits provided with the strobe terminals is the same.

[0113] In the above technical solution, when the driving group includes multiple distribution circuits with enabling ends, standardized production of the distribution circuits can be achieved without distinguishing the positions of different distribution circuits, thereby reducing production costs. In the same driving group, the second identification information corresponding to the distribution circuits is the same, which can reduce the complexity of the control logic.

[0114] In some embodiments, the backlight assembly includes a light board, and the light board includes the light emitting unit group and the driving chip;

[0115] The distribution circuit is arranged on the surface of the light board.

[0116] In the above technical solution, the distribution circuit is arranged on the surface of the light board, and can be electrically connected to the driving chip through the inter-board wiring of the light board. There is no need to set connecting wires between the distribution circuit and the light 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.

[0117] In some embodiments, the distribution circuit further comprises a temperature sampling unit;

[0118] The temperature sampling unit is electrically connected to the first end of the distribution circuit, and the temperature sampling unit is configured to sample temperature information and output a temperature sampling signal to the controller.

[0119] In the above technical solution, a temperature sampling unit is provided in the distribution circuit to sample the temperature of the backlight assembly, and there is no need to additionally provide a temperature sensor in the backlight assembly, thereby simplifying the circuit structure and installation cost of the backlight assembly.

[0120] The display device provided in some embodiments of the present application includes a display panel, a controller, a backlight assembly, and a distribution circuit. The backlight assembly includes multiple drive groups and multiple light-emitting unit groups. The drive group includes at least one drive chip. The first end of the distribution circuit is electrically connected to the controller, and the second end of the distribution circuit is electrically connected to at least one drive group. When the controller controls the backlight assembly to emit light, the controller processes the image data to generate drive data, and the distribution circuit transmits the drive data to the corresponding drive group to drive the corresponding light-emitting unit group to emit light. In the above circuit structure, the distribution circuit can separate operations such as data transmission that require high-frequency support from the controller for processing, thereby reducing the controller's demand for the main frequency. 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 technology that has high comprehensive requirements for the main frequency and data processing computing power, thereby reducing the cost of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0121] In order to more clearly illustrate the implementation methods of some embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0122] Figure 1 is a schematic diagram of an operation scenario between a display device and a control device according to some embodiments;

[0123] Figure 2A is a schematic structural diagram of a display device including parallel-connected driving chips according to some embodiments;

[0124] Figure 2B is a schematic structural diagram of a display device including parallel-connected driving chips according to some other embodiments;

[0125] Figure 3A is a schematic structural diagram of a display device including cascaded driver chips according to some embodiments;

[0126] Figure 3B is a schematic structural diagram of a display device including cascaded driver chips according to some other embodiments;

[0127] Figure 4 is a schematic diagram of a circuit structure of a backlight assembly according to some embodiments;

[0128] Figure 5 is a schematic structural diagram of a display device including a distribution circuit according to some embodiments;

[0129] Fig. 6A is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0130] Figure 6B is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0131] Fig. 7A is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0132] Figure 7B is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0133] Fig. 8A is a schematic structural diagram of a display device including a distribution circuit according to another embodiment;

[0134] Figure 8B is a schematic structural diagram of a display device including a distribution circuit according to another embodiment;

[0135] Figure 8C is a schematic structural diagram of a display device including a distribution circuit according to another embodiment;

[0136] Fig. 9A is a transmission timing diagram of driving data according to some embodiments;

[0137] Fig. 9B is a transmission timing diagram of driving data according to some embodiments;

[0138] Fig.10 is a schematic diagram of a structure including a distribution circuit according to another embodiment;

[0139] Fig.11A is a schematic diagram of a series connection of a distribution circuit according to some embodiments;

[0140] Fig. 11B is a schematic diagram of parallel connection of distribution circuits according to some embodiments;

[0141] Fig. 11C is a schematic diagram of series-parallel connection of a distribution circuit according to some embodiments;

[0142] Fig.11D is a schematic diagram of parallel connection of distribution circuits according to some other embodiments;

[0143] Fig. 12A is a schematic structural diagram of a display device including a distribution circuit according to some embodiments;

[0144] Fig. 12B is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0145] Fig. 12C is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0146] Fig.12D is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0147] Fig.12E is a schematic structural diagram of a display device including a distribution circuit according to some other embodiments;

[0148] Fig.13A is an equivalent schematic diagram of a voltage control module according to some embodiments;

[0149] Fig. 13B is an equivalent schematic diagram of a voltage control module according to some other embodiments. DETAILED DESCRIPTION

[0150] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0151] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0152] In addition, the terms "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 those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0153] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a smart TV, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 This is a specific implementation of the display device of the present application.

[0154] Figure 1FIG. 1 is a schematic diagram of an operation scenario between a display device and a control device according to some embodiments. Figure 1 As shown, the user can operate the display device 200 through the smart device 300 or the control apparatus 100 .

[0155] In some embodiments, the control device 100 may be a remote controller, and the communication between the remote controller and the display device 200 includes infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, and the display device 200 is controlled wirelessly or wired. The user can input user commands through buttons on the remote controller, voice input, control panel input, etc. to control the display device 200.

[0156] In some embodiments, a smart device 300 (such as a mobile terminal, a tablet computer, a computer, a laptop computer, etc.) may also be used to control the display device 200. For example, an application running on the smart device is used to control the display device 200. The display device 200 may not use the above-mentioned smart device 300 or the control device 100 to receive instructions, but may receive user control through touch or gestures.

[0157] 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.

[0158] In some embodiments, the display device 200 also communicates data with the server 400. The display device 200 may be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 400 may provide various content and interactions to the display device 200. The server 400 may be one cluster or multiple clusters, and may include one or more types of servers.

[0159] Figure 2A is a schematic structural diagram of a display device 200 according to some embodiments.

[0160] In some embodiments, the display device 200 includes a controller 250, 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, and perform format conversion, timing control and other processing on the backlight brightness data and the display data and then output them.

[0161] In some embodiments, the controller 250 is configured to obtain a video input signal or an image input signal (hereinafter referred to as an input signal) from an external input port or a network port, and perform operations such as format conversion, data processing, and image rendering on the input signal to improve the display quality of the input signal. Backlight brightness data and display data are generated based on the input signal, and driving data is generated based on the backlight brightness data.

[0162] In some embodiments, the display device 200 includes a display panel 10 , the display panel 10 and the controller 250 are electrically connected, the display panel 10 includes liquid crystal molecules, and the liquid crystal molecules are configured to receive display data and deflect based on the display data.

[0163] In some embodiments, the display device 200 includes a backlight assembly 20 , the backlight assembly 20 is electrically connected to the controller 250 , and the backlight assembly 20 is configured to receive driving data and emit light based on the driving data. The display panel 10 can display a picture based on the backlight provided by the backlight assembly 20 .

[0164] In some embodiments, the controller 250 may be configured to output data based on a preset protocol, such as: the preset protocol includes an AM driving protocol, which is a protocol supported by the backlight assembly 20, and the backlight assembly 20 may process the driving data of the preset protocol to generate a corresponding backlight. 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.

[0165] In other embodiments, the AM drive protocol includes an SPB protocol, in which an electrical signal with a jump in the data cycle corresponds to 1 in the drive data code, and an electrical signal corresponding to data that does not jump in the data cycle corresponds to 0 in the drive data code, and the level will jump once after each data cycle is completed, which has higher stability than the SPI protocol.

[0166] In some embodiments, the controller 250 includes a SOC 251, which is configured to perform operations such as format conversion, data processing, image rendering, and protocol conversion on the input signal to generate display intermediate data. In some embodiments, the controller 250 includes a timing controller (Tcon for short) 252, which is electrically connected to the SOC 251, and the timing controller 252 is configured to obtain display intermediate data, process the display intermediate data, and output the display data in a time sequence. Among them, the display intermediate data cannot be directly processed by the display panel 10, and the display data is data that can be processed by the display panel 10.

[0167] In some embodiments, the timing controller 252 is configured to map the display data with the positions of the liquid crystal molecules so that the display data obtained by the display panel is the data that needs to be displayed, thereby ensuring the accuracy of the display.

[0168] In some embodiments, the controller 250 may include a backlight controller (Bcon) 270 or a dimming controller (DCON), which is configured to obtain processing data associated with backlight brightness data, generate and output driving data based on the processing data. The backlight brightness data is data generated based on the image data input by the controller 250, which is data for adjusting the brightness of the backlight assembly, and the backlight brightness data includes current and / or duty cycle. Figure 2A and Figure 3A In the circuit structure shown, the backlight controller 270 and the SOC 251 are electrically connected, and the SOC 251 is configured to output backlight brightness data based on input image data.

[0169] refer to Figure 2B and Figure 3B In the circuit structure shown, the backlight controller 270 is electrically connected to the timing controller 252, the timing controller 252 is electrically connected to the SOC 251, the SOC 251 is configured to output intermediate data based on the input image data, and the timing controller 252 is configured to output backlight brightness data based on the intermediate data.

[0170] In some embodiments, the backlight assembly 20 includes at least one driving group 201, at least one driving group 201 is electrically connected to the controller 250, each driving group 201 includes at least one driving chip 202, and the driving chip 202 is configured to generate a driving signal based on driving data.

[0171] In some embodiments, the backlight assembly 20 further includes a plurality of lamp beads 301, at least one of which is electrically connected to form a light-emitting unit group, and the light-emitting unit group is electrically connected to a driving end of the driver chip 202, and is configured to emit light based on a driving signal. In some embodiments, in the light-emitting unit group, at least one lamp bead is connected in series to form a light string, which has a simple connection process, low production cost, and is convenient for layout; in other embodiments, in the light-emitting unit group, at least one lamp bead is connected in parallel, and the working states of each lamp bead do not affect each other; in other embodiments, in the light-emitting unit group, after at least one lamp bead is connected in series to form a light string, at least one light string is electrically connected in parallel, which is convenient for balancing the simple implementation of the connection process and the stability of the light emission of the lamp beads.

[0172] The plurality of lamp beads 301 in the backlight assembly 20 are arranged in an array, and the lamp string is composed of lamp beads 301 connected in series from left to right or from right to left, or from top to bottom or from bottom to top, or in series in a preset order (e.g., rotation, bending, etc.), to adapt to the display order of the display panel 10 to ensure the display quality of the display device. The lamp beads 301 can be composed of MiniLED, MicroLED, WLED, RGB-LED, GB-rLED or QLED (quantum dot).

[0173] In some embodiments, the backlight assembly 20 is electrically connected to the backlight controller 270, and the backlight controller 270 is configured to map the backlight brightness data with the positions of the light-emitting unit groups so that the backlight brightness data obtained by each light-emitting unit group is the data for driving it to emit light.

[0174] In one embodiment, the display device 200 includes a power supply circuit 13, and the power supply circuit 13 is electrically connected to the controller 250, the backlight assembly 20, and the display panel 10, respectively. The power supply circuit 13 is configured to provide corresponding power signals to the controller 250, the display panel 10, and / or the backlight assembly 20. In some embodiments, the power supply circuit 13 is electrically connected to the timing controller 252, the SOC 251, and the backlight controller 270 in the controller 250, respectively, and the power supply circuit 13 is configured to provide corresponding power signals to the timing controller 252, the SOC 251, and / or the backlight controller 270. In some embodiments, the power supply circuit 13 is electrically connected to the power supply end of each light-emitting unit group in the backlight assembly 20, and is configured to provide a first power supply electrical signal VLED, so that the light-emitting unit group emits light when obtaining the first power supply electrical signal VLED and the driving signal provided by the driving chip 202.

[0175] In some embodiments, the driver chip 202 outputs a driving signal only when its output channel is turned on, and the driver chip 202 samples the current value of the driving signal of the light-emitting unit group when its output channel is turned on. In some embodiments, the driver chip 202 is configured to determine the state information of the light-emitting unit group corresponding to the driver chip 202 when its output channel is turned on, and the state information is used to characterize the power-on state of the light-emitting unit group driven by the driver group connected to the data transmission module, and the power-on state includes an undervoltage state or an overvoltage state.

[0176] In some embodiments, the controller 250 is configured to provide a feedback signal to the power supply circuit 13 based on the state information of the light-emitting unit group, so that the power supply circuit 13 adjusts the supply voltage based on the voltage regulation feedback signal. The backlight controller 270 in the controller 250 is electrically connected to the power supply circuit 13, and the backlight controller 270 is configured to obtain the signal fed back by the driver chip 202, and adjust the supply voltage value output by the power supply circuit 13 based on the feedback signal. The power supply circuit 13 is configured to adjust the voltage value of the first power supply electrical signal VLED based on the feedback signal to prevent the existence of an undervoltage light-emitting unit group on the backlight assembly 20, which affects the light brightness and thus affects the display quality.

[0177] In some embodiments, the driver chip 202 transmits a state feedback signal including a sampled power supply voltage through a wire between its data output terminal Dout and the controller 250, which does not affect the process of the controller 250 transmitting driving data to the driver chip 202. In other embodiments, the driver chip 202 transmits the state feedback signal in reverse to the controller 250 using its transmission wire for driving data, which saves the number of connection wires between the controller 250 and the driver chip 202 and simplifies the circuit structure.

[0178] In some embodiments, reference Figure 2A and Figure 2B In the circuit structure shown, multiple driver chips 202 in the driver group 201 are connected in parallel, the input terminals DIN of the driver chips 202 in the driver group 201 are electrically connected in parallel, and the output terminals DOUT of the driver chips 202 are electrically connected in parallel; wherein the input terminal DIN is configured to receive a first electrical signal output by the controller 250; the first electrical signal includes driving data; in some embodiments, the output terminal DOUT is configured to output a feedback signal to the controller 250; in the above circuit structure, multiple driver chips 202 are connected in parallel to help improve data transmission efficiency.

[0179] In other embodiments, reference Figure 3A and Figure 3B In the circuit structure shown, a plurality of driver chips 202 in a driver group 201 are connected in cascade, the input terminal DIN of the driver chip 202 at the first position in the driver group 201 is electrically connected to the controller 250, and the output terminal DOUT is electrically connected to the input terminal DIN of the adjacent next-stage driver chip 202, and so on, until it is electrically connected to the input terminal DIN of the driver chip 202 at the last position;

[0180] In some embodiments, the plurality of driver chips 202 transmit feedback signals to the controller 250 in the reverse direction of the driving data transmission path; the output terminal DOUT of the last driver chip 202 is electrically connected to the controller 250, and the output terminal DOUT of the last driver chip 202 is configured to output a feedback signal to the controller 250. In the above circuit structure, the cascade connection of the plurality of driver chips 202 helps to save the number of configured addresses.

[0181] The physical structure diagram of the backlight assembly 20 and the display panel 10 is shown in FIG. Figure 4 As shown, the display panel 10 is placed on the upper side of the backlight assembly, and the upper side of the display panel 10 can display the picture. In some embodiments, the backlight assembly 20 includes a back plate 407, which is configured to provide a supporting substrate. In some embodiments, the backlight assembly 20 includes a lamp board 30, on which lamp beads 301 are arranged, which are configured to provide backlight. In some embodiments, the backlight assembly 20 includes: a reflective sheet 404, which is configured to reflect the backlight of the lamp board 30 in the direction of the diffuser plate 402; the arrangement order of the components from top to bottom is: a diaphragm 401, a diffuser plate 402, a bracket 403, a reflective sheet 404, a lamp board 30, and a back plate 407. In some embodiments, the backlight assembly 20 includes: a bracket 403, which is configured to support a diffuser plate 402, a diaphragm 401, etc., so as to maintain an optical spacing between the light board 30 and the diffuser plate 402; wherein the diaphragm 401 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; the diffuser plate 402 is configured to scatter light and evenly guide light, so that the brightness distribution of the entire display panel is more uniform;

[0182] In some embodiments, taking a micro LED display device as an example, a plurality of lamp boards 30 are provided in the backlight assembly 20. After the plurality of lamp boards 30 are spliced ​​together, they emit light together to provide backlight to the display panel 10. Each lamp board 30 includes a plurality of light-emitting areas, and each light-emitting area (also referred to as a partition) includes a plurality of micro lamp beads, which are micron-level lamp beads such as miniLED and microLED. The lamp board 30 is electrically connected to at least one driver group 201. In some embodiments, the driver group 201 is disposed on the lamp board 30. The driver group 201 includes one or more driver chips. The driver chip 201 of each partition receives the driving data sent by the backlight controller 270, and drives the corresponding lamp bead 301 to emit light based on the driving data, thereby realizing local backlight control of the backlight assembly 20, that is, realizing Local dimming, so as to realize more accurate regional light control and make the screen brightness more uniform and harmonious.

[0183] As the number of partitions increases, the amount of image data to be processed by the controller 250 in the display device increases. In order to ensure that the driving data generated based on the image data can be completely transmitted to the backlight assembly 20, the transmission frequency of the electrical signals for interacting between the controller 250 and the backlight assembly 20 is also increased. The controller 250 needs to meet the requirements of large storage space, large computing power, and high main frequency.

[0184] by Figure 2A Taking the circuit structure shown as an example, in the related technology, the SOC 251 in the controller 250 processes the image data and generates backlight brightness data. The backlight controller 270 can store the backlight brightness data, convert the backlight brightness data into driving data based on the AM driving protocol, map the driving data according to the distribution of the light-emitting unit group and output it, and can also receive the feedback signal output to the backlight controller 270 when the driving chip 202 drives the light-emitting unit group, and adjust the output voltage value of the power supply circuit 13 based on the feedback signal. The backlight controller 270 must meet the demand of processing large amounts of data and the demand of high main frequency, resulting in high comprehensive requirements for the backlight controller 270 and high cost of the display device.

[0185] Since the backlight controller 270 generally processes and sends the data only after all the backlight brightness data is acquired, when there are many partitions on the backlight assembly 20, 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 waste of resources. Data transmission delays can easily lead to display synchronization between the backlight assembly 20 and the display panel 10.

[0186] To this end, some embodiments of the present application provide a display device, and the technical concept is: a distribution circuit is set in the display device, which can separate operations such as data transmission that require high-frequency support from the controller for processing, thereby 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 technology that has high comprehensive requirements for the main frequency and data processing computing power, thereby reducing the cost of the display device.

[0187] 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 described in detail in some embodiments.

[0188] Figure 5Schematic diagram of the structure of a display device according to some embodiments. As shown in the figure, in some embodiments, the display device includes a distribution circuit 290, a first end of the distribution circuit 290 is electrically connected to the controller 250, and the distribution circuit 290 is configured to output the driving data from the second end of the distribution circuit 290 after obtaining the driving data from the controller 250; the backlight assembly 20 is arranged on a side away from the display surface of the display panel 20, and the backlight assembly 20 includes a plurality of driving groups 201, and the second end of the distribution circuit 290 is electrically connected to the first end of at least one driving group 201.

[0189] In some embodiments, the driving group 201 includes at least one driving chip 202, the input end of the driving chip 202 is electrically connected to the first end of the driving group 201, the driving chip 202 is configured to obtain a driving data segment corresponding to the driving chip 202 in the driving data, and output a driving signal based on the driving data segment. The driving data includes at least one driving data segment, and different driving chips 202 correspond to different driving data segments.

[0190] In some embodiments, the backlight assembly 20 also includes multiple light-emitting unit groups, the driving chip 202 is electrically connected to at least one light-emitting unit group, and the light-emitting unit group is configured to emit light based on a driving signal; wherein different driving chips 202 are electrically connected to different light-emitting unit groups 31 to achieve corresponding driving of the light-emitting unit groups.

[0191] In some embodiments, the length of the driving data segment obtained by the driving chip 202 is proportional to the number of light emitting unit groups 31 electrically connected to the driving chip 202 , wherein the light emitting unit group 31 includes at least one lamp bead 301 .

[0192] In the above technical scheme, the display device includes a display panel, a controller, a backlight assembly, and a distribution circuit. The backlight assembly includes multiple drive groups and multiple light-emitting unit groups. The drive group includes at least one drive chip. The first end of the distribution circuit is electrically connected to the controller, and the second end of the distribution circuit is electrically connected to at least one drive group. When the controller controls the backlight assembly to emit light, the controller processes the image data to generate drive data, and the distribution circuit transmits the drive data to the corresponding drive group to drive the corresponding light-emitting unit group to emit light. In the above circuit structure, the distribution circuit can separate operations such as data transmission that require high-frequency support from the controller for processing, thereby reducing the controller's demand for the main frequency. 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 technology that has high comprehensive requirements for the main frequency and data processing computing power, thereby reducing the cost of the display device.

[0193] In some embodiments, the controller 250 includes a SOC 251 or a timing controller 252 .

[0194] In some embodiments, reference Fig. 6A In the circuit structure shown, the first end of the distribution circuit 290 is electrically connected to the SOC 251. In this connection mode, the operation concentration of the SOC 251 is higher, which can improve the operation utilization rate of the SOC 251.

[0195] In some embodiments, reference Figure 6B In the circuit structure shown, the first end of the distribution circuit 290 is electrically connected to the timing controller 252. In this connection mode, the driving data can be jointly generated by the SOC 251 and the timing controller 252, which helps to increase the generation link of the driving data to improve the display effect, or helps to release the computing power of the SOC 251 by allocating part of the computing process to the timing controller 252, thereby improving the computing power utilization of the timing controller 252 and reducing the computing power requirement of the SOC 251.

[0196] In some embodiments, the distribution circuit 290 includes a data transmission module 291 , a first end 297 of the data transmission module 291 is electrically connected to the controller 250 , and a second end of the data transmission module 291 is electrically connected to the driving group 201 corresponding to the data transmission module 291 .

[0197] refer to Fig. 7A and Figure 7B In the circuit structure shown, the data transmission module 291 located on the upper side is electrically connected to the driver chip 202 in the first row of the backlight assembly 20, and the data transmission module 291 located on the lower side is electrically connected to the driver chip 202 in the second row of the backlight assembly 20. The data transmission module 291 is configured to output a preset number of driving data segments to the driver chip 202 in the connected driving group 201 after acquiring a preset number of driving data segments; the distribution circuit 290 obtains driving data serially based on the SPI bus between it and the controller 250; wherein different data transmission modules 291 are electrically connected to different driving groups; the driving data obtained by the distribution circuit includes a preset number of driving data segments, and the preset number of driving data segments includes at least one driving data segment.

[0198] In the above technical solution, after the data transmission module in the distribution circuit obtains a preset number of driving data segments, it can transmit data to the driving chip in the driving group to which it is connected. Compared with the backlight controller obtaining all the driving data and then transmitting the data to the driving chip, this reduces the data transmission delay and improves the synchronization between the backlight component's light emission and the display panel's display.

[0199] In some embodiments, there are multiple data transmission modules 291, and the first ends of at least two data transmission modules 291 are electrically connected. The data transmission modules 291 are provided with corresponding first identification information, and different data transmission modules 291 connected at the first ends have different corresponding first identification information; the first identification information is used to characterize the identity information of the data transmission module 291. The data transmission module 291 is configured to receive a preset number of driving data segments based on the first identification information corresponding to the data transmission module 291; and the driving data segment includes the first identification information corresponding to the data transmission module 291.

[0200] 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 291, 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.

[0201] In some embodiments, the first terminal 297 of the distribution circuit 290 includes an SPI interface, and the distribution circuit 290 is electrically connected to the SPI interface of the controller 250 via the first terminal 297. In some embodiments, the internal circuit connection relationship of the distribution circuit 290 is as follows: Fig. 8A As shown, the first end of the data transmission module 291 is electrically connected to the first end 297 of the distribution circuit.

[0202] In the above technical solution, among the multiple data transmission modules, the first ends of at least two data transmission modules are electrically connected, which can reduce the number of wirings in the distribution circuit and reduce production costs.

[0203] In some embodiments, the distribution circuit 290 further includes a data receiving module 295, and the data receiving module 295 has at least one output terminal. Figure 8B In the circuit structure shown, the data receiving module 295 is provided with an output terminal. The input terminal of the data receiving module 295 is electrically connected to the first terminal 297 of the distribution circuit 290, and the output terminal of the data receiving module 295 is electrically connected to the first terminal of the data transmission group corresponding to the output terminal, and the data transmission group includes at least two data transmission modules 291 connected at the first terminals, and the first terminal of the data transmission module 291 is electrically connected to the first terminal of the data transmission group; wherein different output terminals of the data receiving module 295 correspond to different electrically connected data transmission groups;

[0204] In some embodiments, the data receiving module 295 is configured to output a driving data segment to a plurality of data transmission groups according to a preset data transmission sequence, wherein the driving data segment includes first identification information corresponding to at least two data transmission modules 291 connected in parallel in the data transmission group. In some embodiments, the data receiving module 295 and each data transmission module 291 are electrically connected to a chip selection conductor respectively. When the data receiving module 295 outputs driving data to a target data transmission module, the chip selection signal corresponding to the target data transmission module is output through the chip selection conductor. Based on the chip selection signal, the target data transmission module receives the driving data, and other data transmission modules do not receive the driving data.

[0205] In some embodiments, reference Figure 8C In the circuit structure shown, the data receiving module 295 is provided with multiple output terminals, multiple data transmission groups and multiple output terminals are electrically connected correspondingly, and each output terminal is only electrically connected to one data transmission group. The data receiving module 295 transmits the driving data segments to the multiple data transmission groups in sequence. At this time, the first identification information can be reused in the driving data segments received by each data transmission group, such as: the first data transmission group includes two parallel data transmission modules 291, and the first identification information set is 01 and 02 respectively. The second data transmission group includes two parallel data transmission modules 291, and the first identification information set can also be 01 and 02 respectively. Since the two output terminals of the data receiving module 295 are respectively connected to the first data transmission group and the second data transmission group, the transmission driving data segments are transmitted separately, so the same first identification information will not cause confusion between the data obtained by the data transmission modules in different data transmission groups.

[0206] In the above technical solution, in the distribution circuit, the data receiving module is arranged between the controller and multiple data transmission modules, and the driving data received by the distribution circuit can be distributed among multiple data transmissions according to a preset data transmission order. The controller only needs to distribute the driving data to each distribution circuit, which can reduce the controller's workload on distributing driving data and improve the driving data distribution efficiency of the display device.

[0207] In some embodiments, there are multiple data transmission modules 291, and the distribution circuit 290 further includes a data receiving module 295. The data receiving module 295 is provided with multiple output terminals. In the distribution circuit 290, the input terminal of the data receiving module 295 is electrically connected to the first terminal of the distribution circuit 290, and the output terminal of the data receiving module 295 is electrically connected to a data transmission module 291 corresponding to the output terminal; wherein different output terminals of the data receiving module 295 are electrically connected to different data transmission modules 291. The data receiving module 295 is configured to output the driving data segment to the multiple data transmission modules 291 according to a preset data transmission sequence.

[0208] In some embodiments, each data transmission module 291 is provided with corresponding first identification information, the driving data segment acquired by the data receiving module 295 includes the first identification information, and the data receiver module 295 outputs the corresponding driving data segment from the corresponding output end based on the first identification information and the preset data transmission sequence.

[0209] In the above technical solution, multiple output ends of the data transmission module and multiple output ends of multiple data transmission modules are electrically connected correspondingly, and each output end is electrically connected to a different data transmission module. The data transmission module can output the received driving data in parallel to improve the efficiency of driving data transmission.

[0210] In some embodiments, the data transmission module 291 is provided with a corresponding first delay time. The data transmission module 291 is configured to output the driving data segment obtained by the data transmission module 291 after the first delay time corresponding to the data transmission module 291, starting from the initial moment corresponding to the frame start signal. The first delay time is determined based on the light-emitting scanning delay time of the liquid crystal molecules corresponding to the light-emitting unit group connected to the data transmission module 291, so that the light-emitting unit group emits light when the liquid crystal molecules are deflected to a preset angle, so as to ensure the accuracy of the liquid crystal molecules displaying pixels.

[0211] In the above technical scheme, the accurate transmission time of each data transmission module is determined by the first delay time corresponding to each data transmission module, thereby determining the light-emitting time of the light-emitting unit group driven by the driving chip corresponding to the data transmission module, which can ensure that each driven light-emitting unit group in the backlight assembly can delay light emission. The delay is consistent with the scanning order of the liquid crystal molecules corresponding to the light-emitting unit group in the display panel, so as to ensure the accuracy of the display image of the display device.

[0212] In some embodiments, the data transmission module 291 is configured to output the driving data segment only after receiving the driving data segment of a preset length, so as to prevent the data transmission module 291 from receiving data slowly and causing incomplete output of the driving data segment to be displayed. When the data transmission module 291 fails to complete receiving the driving data segment, the driving data segment is stored in a register 294 electrically connected thereto. In some embodiments, the connection relationship between the register 294 and the data transmission module 291 is as follows: Fig. 8A , Figure 8B and Figure 8C shown.

[0213] In some embodiments, the plurality of data transmission modules 291 include at least two first data transmission modules, and different first data transmission modules correspond to different first delay durations, and the light-emitting durations of the light-emitting unit groups driven by the driving groups electrically connected to the first data transmission modules are different. The controller 250 can transmit the driving data segments to the plurality of first data transmission modules respectively based on the different first delay durations, so that the first data transmission modules can realize minimizing the storage duration of the driving data segments stored in the register 294.

[0214] In some embodiments, when the distribution circuit 290 only includes multiple first data transmission modules, the controller 250 can output the corresponding driving data segments one by one based on the first delay time corresponding to each first data transmission module, so that the first data transmission module can realize the instant reception and transmission of driving data.

[0215] Reference Fig. 9A As shown in the waveform diagram, according to the first-in-first-out rule, in one frame display period, the time when the liquid crystal molecules corresponding to the first data transmission module 1 complete the first preset angle deflection is earlier than the time when the liquid crystal molecules corresponding to the first data transmission module 2 complete the second preset angle deflection, and the time when the first data transmission module 1 outputs the driving data segment is earlier than the time when the first data transmission module 2 outputs the driving data segment. In some embodiments, the frame start signal can be a vertical synchronization signal Vsync.

[0216] Based on reference Fig. 9A In the waveform diagram, the first delay time length corresponding to the first data transmission module 1 is d1, the first delay time length corresponding to the first data transmission module 2 is d2, and d2>d1. Then, from the time when the distribution circuit 290 obtains the vertical synchronization signal Vsync, after the first delay time length d1, the first data transmission module 1 outputs the obtained drive data segment; from the time when the vertical synchronization signal Vsync, after the first delay time length d2, the first data transmission module 2 outputs the obtained drive data segment.

[0217] In the above technical solution, the first delay durations set for at least two first data transmission modules in the distribution circuit are different, so that the first data transmission modules can stagger the durations for obtaining drive data. There is no need to set a large-capacity storage unit in the distribution circuit to ensure the consistency of the delay duration, thereby improving the utilization rate of the storage unit, reducing the capacity of the storage unit, and reducing the cost.

[0218] In some embodiments, the data transmission module 291 is provided with a corresponding second delay time. The controller is configured to output the driving data segment corresponding to the first data transmission module after the second delay time corresponding to the first data transmission module from the initial moment corresponding to the frame start signal; the second delay time corresponding to the first data transmission module is determined based on the first delay time corresponding to the first data transmission module and the transmission time of the driving data segment, and the transmission time is the time for the controller to transmit the driving data segment from the controller to the first data transmission module. In some embodiments, the second delay time is the difference between the first delay time and the transmission time.

[0219] In the above technical solution, the controller determines the second delay duration for transmitting data to each data transmission module through the first delay duration and the data transmission duration set by the data transmission module. The controller adjusts the sending time of the driving data corresponding to each data transmission module, which can improve the computing power utilization of the controller, simplify the operating logic of the distribution circuit, and ensure the low cost of the display device.

[0220] In some embodiments, the multiple data transmission modules 291 include at least two second data transmission modules, different second data transmission modules correspond to the same first delay duration, and the light-emitting duration of the light-emitting unit group driven by the driving group electrically connected to the second data transmission modules is the same.

[0221] In the above technical solution, the first delay durations corresponding to at least two second data transmission modules in the distribution circuit are the same, so as to reduce the number of distribution circuits that simultaneously transmit driving data to the driving chips connected to the light-emitting unit groups that emit light simultaneously, which helps to improve the centralization of the controller in transmitting data to the distribution circuits at different light-emitting moments.

[0222] In some embodiments, the controller 250 outputs driving data to the distribution circuit 290 based on a serial transmission protocol (such as the SPI protocol). When the distribution circuit 290 includes multiple second data transmission modules, the driving data segments are output to each second data transmission module in sequence according to a preset order, and each second data transmission module stores the driving data segments in the register 294 one by one until the last second data transmission module in the preset order receives the driving data segment, and then the multiple second data transmission modules uniformly output the driving data segments.

[0223] Reference Fig. 9B As shown in the waveform diagram, in one frame display period, the time when the liquid crystal molecules corresponding to the second data transmission module 1 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 2 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 second data transmission module 1 outputs the driving data segment is the same as the time when the second data transmission module 2 outputs the driving data segment.

[0224] In some embodiments, the second data transmission module is provided with a corresponding third delay time, and the third delay time is the delay time for the second data transmission module to receive the driving data. The second data transmission module is configured to start receiving the driving data segment from the initial moment corresponding to the frame start signal after the third delay time corresponding to the second data transmission module; wherein different second data transmission modules have different third delay times. In some embodiments, the frame start signal may be a vertical synchronization signal Vsync.

[0225] Based on reference Fig. 9B In the waveform diagram, the first delay time length corresponding to the second data transmission module 1 is d1, the first delay time length corresponding to the second data transmission module 2 is d2, and d2=d1. In order to adapt to the serial transmission protocol, the time when the second data transmission module 1 receives the driving data segment is set earlier than the time when the second data transmission module 2 receives the 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 second data transmission module 1 receiving the driving data segment, and the third delay time length d4 is the delay time length of the second data transmission module 2 receiving the driving data segment, and d3 <d4。

[0226] Then, the second data transmission module 1 receives the driving data segment at time t1 after the third delay time d3 from the vertical synchronization signal Vsync, and stores the driving data segment in the register 294; the second data transmission module 2 receives the driving data segment at time t2 after the third delay time d4 from the vertical synchronization signal Vsync, and stores the driving data segment in the register 294; from time t3 after the first delay time d1 from the vertical synchronization signal Vsync, the two second data transmission modules 2 simultaneously output the driving data segment.

[0227] In the above technical solution, the second data transmission module is provided with a corresponding third delay time, and the third delay time of the data received by the second data transmission module which outputs the driving data at the same time is set to be different, so as to perform time-sharing transmission of the data. This can adapt to the transmission logic used in the display device, and there is no need to adjust the data transmission logic between the controller and the distribution circuit. It can also ensure a low number of terminals for the controller to output driving data, thereby ensuring the low cost of the display device.

[0228] refer to Fig.10 In the circuit structure described, in some embodiments, the distribution circuit 290 includes a synchronization module 293, the input end of the synchronization module 293 is electrically connected to the first end of the distribution circuit 290, and the output end of the synchronization module 293 is electrically connected to each data transmission module 291. The synchronization module 293 is configured to receive a frame start signal and transmit the frame start signal to each data transmission module to regulate the transmission time of the connected data transmission modules 291.

[0229] In some embodiments, the fourth delay duration of the current distribution circuit 290 is set in the synchronization module 293. After obtaining the frame start signal, the synchronization module 293 outputs a reference signal to each data transmission module from a reference time after a fourth delay duration. The reference time is the sum of the time when the frame start signal is obtained and the fourth delay duration.

[0230] Each data transmission module 291 sets a fifth delay time relative to the reference time, and the data transmission module outputs the driving data segment at the fifth delay time after obtaining the reference signal. The first delay time set by the data transmission module 291 is the sum of the fifth delay time set by the data transmission module 291 and the fourth delay time set by the synchronization module 293 connected to the data transmission module 291.

[0231] When there are multiple distribution circuits 290 in the display device, the fifth delay time can be set to be the same for the data transmission modules with the same order of transmitting driving data in different distribution circuits 290, and only the fourth delay time needs to be set in different distribution circuits 290. It is worth noting that the delay rules of the light-emitting unit groups driven by the distribution circuits 290 are the same.

[0232] For example, when the backlight assembly includes 6 rows of light-emitting unit groups, the backlight assembly 20 scans row by row from top to bottom and from left to right, and the backlight assembly 20 is electrically connected to two distribution circuits 290, then the first distribution circuit corresponds to the first row, the third row, and the fifth row of partitions, and the second distribution circuit corresponds to the second row, the fourth row, and the sixth row. Three data transmission modules are set in the distribution circuit, and each data transmission module corresponds to a row of partitions. Then, the fifth delay time set for the data transmission modules corresponding to the first row and the second row is the same, the fifth delay time set for the data transmission modules corresponding to the third row and the fourth row is the same, and the fifth delay time set for the data transmission modules corresponding to the fifth row and the sixth row is the same. It is sufficient that the fourth delay time set by the first distribution circuit is shorter than the fourth delay time of the second distribution circuit.

[0233] When there are multiple distribution circuits 290, there are many ways to connect the distribution circuits 290, which are further explained below. Fig.11A In the circuit structure shown, at least two distribution circuits 290 are cascaded via a communication bus, wherein the first-stage distribution circuit 290 is electrically connected to the communication interface of the controller 250 via the communication bus, that is, the input terminal DIN of the first-stage distribution circuit 290 is electrically connected to the communication interface of the controller 250 via the communication bus, and the input terminal DIN of the non-first-stage distribution circuit 290 is electrically connected to the output terminal DOUT of the previous-stage distribution circuit 290.

[0234] In the above technical solution, the cascading of the distribution circuits can reduce the number of communication ports of the controller electrically connected to the distribution circuits, thereby reducing the cost of the controller.

[0235] In some embodiments, the communication bus is configured to transmit driving data along a first direction, and the first direction is from the controller 250 to the last distribution circuit 290 in the cascaded distribution circuit 290. In the above technical solution, the communication bus can set the controller to generate corresponding driving data based on the transmission sequence by setting the transmission sequence of driving data between the distribution circuits to ensure the accuracy of display.

[0236] In some embodiments, the data transmission module 291 is configured to obtain state information of the light-emitting unit group electrically connected to the driver chip 202 from the connected driver chip 202. The state information is used to represent the power-on state of the light-emitting unit group driven by the driver group 201 connected to the data transmission module 291.

[0237] In some embodiments, the distribution circuit 290 includes a register 294, the register 294 is electrically connected to the data transmission module 291 in the distribution circuit 290, and the register 294 is configured to store register information, and the register information includes the state information obtained by the data transmission module 291 from the connected driving group 201. The register 294 is electrically connected to the first end of the distribution circuit 290, and the first end of the distribution circuit 290 is electrically connected to the communication bus, and the communication bus is further configured to transmit the register information along the second direction, and the second direction is the direction from the last distribution circuit 290 in the cascaded distribution circuit 290 to the controller 250.

[0238] In the above technical solution, a register is set in the distribution circuit, and the register information therein can save the setting information of the distribution circuit, and can also save the status information 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 from the register in time to ensure the timeliness of the control.

[0239] In some embodiments, reference Fig. 11B In the circuit structure shown, at least one distribution circuit 290 is connected in cascade to form a distribution group, each distribution group includes a different distribution circuit 290, and at least two distribution groups are electrically connected in parallel. Fig. 11B The circuit structure shown includes two distribution groups, each of which includes two cascaded distribution circuits 290. The first ends of the first distribution circuits 290 in each parallel distribution group are electrically connected, and the connection points of at least two distribution groups are electrically connected to the communication interface of the controller 250 through a communication bus. When each distribution group includes a distribution circuit 290, the distribution circuits 290 are connected in parallel, and the connection method is as follows: Fig. 11C shown.

[0240] In some embodiments, in the distribution group, the number of driver chips 202 connected to each distribution circuit 290 is the same, so that the length of the driving data segment transmitted by each distribution circuit 290 is the same, which is easy to control. In other embodiments, in the distribution group, the number of driver chips 202 connected to each distribution circuit 290 is not exactly the same, so that the number of output terminals of the driver chips 202 connected to the distribution group exceeds the number of light-emitting unit groups by less than a preset number difference, thereby preventing the driving force of the distribution group from being too redundant. In the above technical solution, the parallel connection of the distribution circuits can increase the transmission speed from the controller to the backlight assembly, which helps to increase the frame rate of the display device, thereby improving the display quality.

[0241] In some embodiments, in each distribution group connected in parallel, at least one distribution circuit 290 is provided with a gating terminal, and the at least one distribution circuit 290 provided with the gating terminal includes the first-stage distribution circuit 290 in the distribution group, and the gating terminal is electrically connected to the control terminal of the controller 250. Fig. 11C and Fig. 11B In the connection relationship shown, the control end is end B; Fig.11D In the connection relationship shown, the control end includes a first control end B1 and a second control end B2. The controller 250 is configured to output a strobe signal from the control end and output drive data from the communication interface; wherein the strobe signal includes second identification information, and the second identification information corresponding to the distribution circuit 290 in different drive groups 201 is different, and the second identification information is used to characterize the identity information of each drive group 201, such as address information. The distribution circuit 290 electrically connected to the control end of the controller 250 is configured to obtain drive data, and output drive data when the strobe signal corresponding to the distribution circuit 290 is obtained; and not output drive data when the strobe signal corresponding to the distribution circuit 290 is not obtained.

[0242] exist Fig. 11C and Fig. 11B In the connection relationship shown, the parallel distribution circuits 290 are all electrically connected to the same control terminal B of the controller 250, which is used to save the number of control terminals, and each driving group 201 can only be selected one by one to obtain driving data. Fig.11D In the connection relationship shown, the parallel distribution circuit 290 is electrically connected to the first control terminal B1 and the second control terminal B2 of the controller 250 to improve data transmission efficiency. Multiple driving groups 201 can be simultaneously selected to obtain driving data.

[0243] In the above technical solution, at least one distribution circuit in the parallel distribution group is provided with a strobe terminal, and a strobe signal transmitted through the strobe terminal is used to determine whether to receive the drive data sent by the controller, thereby saving the number of communication ports of the controller and ensuring the accuracy of the drive data transmission.

[0244] In some embodiments, the driving group 201 includes a plurality of distribution circuits 290 provided with a strobe terminal, and in the same driving group 201, the second identification information corresponding to the plurality of distribution circuits 290 provided with a strobe terminal is the same. Fig. 11B In the circuit structure shown, when the two distribution circuits 290 in the first row are both provided with a strobe terminal, the corresponding second identification information is the same.

[0245] In the above technical solution, when the driving group includes multiple distribution circuits with enabling ends, standardized production of the distribution circuits can be achieved without distinguishing the positions of different distribution circuits, thereby reducing production costs. In the same driving group, the second identification information corresponding to the distribution circuits is the same, which can reduce the complexity of the control logic.

[0246] In some embodiments, the display device also includes a power supply circuit 13, which is electrically connected to the display panel 10, the controller 250, and the light-emitting unit group in the backlight assembly 20, and is configured to provide a power supply electrical signal; the power supply electrical signal includes a first power supply electrical signal for powering the light-emitting unit group.

[0247] In some embodiments, the distribution circuit 290 includes a voltage control module 292, an input end of the voltage control module 292 is electrically connected to at least one data transmission module 291 in the distribution circuit 290, and an output end of the voltage control module 292 is electrically connected to the power supply circuit 13. The voltage control module 292 is configured to obtain state information output by the data transmission module 291 connected to the voltage control module 292, and based on the state information, generate a feedback signal at the output end of the voltage control module 292. The feedback signal may be output by the current voltage control module 292, or may be output from other voltage control modules 292 after being affected by the current voltage control module 292. The power supply circuit 13 is configured to adjust the voltage value of the first power supply electrical signal based on the feedback signal.

[0248] In the above technical solution, the distribution circuit also receives status information of the driving chip, and adjusts the voltage value of the first power supply electrical signal output by the power supply circuit based on the status information. Since the amount of data in the status information is large, the main frequency required for the device receiving the status information is relatively high. Since the main frequency set for the driving data transmission in the distribution circuit is relatively high, it can support the transmission requirements of the status information without increasing the cost. The distribution circuit separates the voltage regulation process from the controller, reduces the controller's demand for the main frequency, and reduces the cost of the display device.

[0249] In some embodiments, reference Fig. 12AIn the circuit structure shown, the voltage control module 292 includes a regulation module 2921, an input end of the regulation module 2921 is electrically connected to at least one data transmission module 291 in the distribution circuit 290, and an output end of the regulation module 2921 is electrically connected to an output end of the voltage control module 292.

[0250] The control module 2921 is configured to obtain, from the connected data transmission module 291, the state information of the light-emitting unit group fed back by the driving group electrically connected to the data transmission module, the state information includes an undervoltage state or an overvoltage state; wherein, when the light-emitting unit group is in an undervoltage state, it indicates that the actual current value flowing through the light-emitting unit group is lower than the predetermined current value, and when the light-emitting unit group is in an overvoltage state, it indicates that the actual current value flowing through the light-emitting unit group is not lower than the predetermined current value. When the state information includes at least one undervoltage state, a first control electrical signal is output; when the state information only includes an overvoltage state, a second control electrical signal is output; the first control electrical signal and the second control electrical signal have different values. wherein, the feedback signal is determined based on the first control electrical signal or the second control electrical signal.

[0251] In the above technical solution, in the voltage control module, the regulation module determines the power-on state of the light-emitting unit group based on the status information sampled by the connected data transmission module, and generates different control electrical signals based on different power-on states to determine different feedback signals at the output end of the voltage control module, and adjust the voltage value of the first power supply electrical signal output by the power supply circuit. The above regulation process has simple logic, and the distribution circuit does not require high computing power, thereby ensuring the low cost of the display device.

[0252] In some embodiments, when the display device includes one distribution circuit 290, the distribution circuit 290 includes one voltage control module 292, and the output end of the regulation module 2921 is electrically connected to the output end of the voltage control module 292. The control electrical signal output by the regulation module 2921 is used as a feedback signal, and the control electrical signal is the first control electrical signal or the second control electrical signal.

[0253] In the above technical solution, in the display device, there is only one voltage control module, and the voltage control module only needs to consider the status information sampled by the connected data transmission module to generate a feedback signal, without considering the influence of the output signals of other voltage control modules, thereby simplifying the voltage regulation logic of the power supply circuit.

[0254] In some embodiments, the voltage value of the first control electrical signal is different from the voltage value of the second control electrical signal, the display device includes multiple distribution circuits 290, and the distribution circuit 290 includes at least one voltage control module 292. Then, the display device includes multiple voltage control modules 292, and the output ends of the multiple voltage control modules 292 are electrically connected.

[0255] When two distribution circuits 290 are connected in cascade, the connection between the two distribution circuits 290 and the voltage control module 292 therein is as follows: Fig. 12B As shown, the communication interface 298 of the first distribution circuit (distribution circuit 290 located on the upper side) is electrically connected to the communication interface 297 of the second distribution circuit (distribution circuit 290 located on the lower side) to transmit driving data, the output end of the voltage control module 292 of the second distribution circuit is electrically connected to the receiving end of the voltage control module 202 of the first distribution circuit, and the receiving end of the voltage control module 202 is electrically connected to the output end of the voltage control module 202 through internal wiring, then the output end of the voltage control module 292 of the second distribution circuit and the output end of the voltage control module 202 of the first distribution circuit are electrically connected in parallel. When the two distribution circuits 290 are connected in parallel, the connection method of the two distribution circuits 290 and the voltage control modules 292 inside them is as follows: Fig. 12C As shown, the output ends of the voltage control modules 292 inside the two distribution circuits 290 are electrically connected in parallel.

[0256] Continue to refer Fig. 12B and Fig. 12C In the circuit structure shown, the voltage control module 292 also includes a controllable switch device 2922, the first end of the controllable switch device 2922 is electrically connected to the output end of the control module 2921, and the second end of the controllable switch device 2922 is electrically connected to the output end of the voltage control module 292. The controllable switch device 2922 is configured to be turned on when the connected control module 2921 outputs a first control electrical signal, and output a feedback signal based on the first control electrical signal. When the connected control module 2921 outputs a second control electrical signal and at least one other voltage control module 292 electrically connected to the voltage control module 292 where the controllable switch device 2922 is located outputs a first control electrical signal, the controllable switch device 2922 is turned off. When the connected control module 2921 outputs a second control electrical signal and the other voltage control modules 292 electrically connected to the voltage control module 292 where the controllable switch device 2922 is located all output a second control electrical signal, the controllable switch device 2922 is turned on when the connected control module 2921 outputs a second control electrical signal, and the other voltage control modules 292 electrically connected to the voltage control module 292 where the controllable switch device 2922 is located all output a second control electrical signal, the controllable switch device 2922 is turned on when the voltage control module 2922 outputs a second control electrical signal, and output a feedback signal based on the second control electrical signal.

[0257] In the above technical solution, a controllable switch device is provided in the voltage control module, and is electrically connected in series between the output end of the voltage control module and the output end of the regulation module. Based on the control electrical signal output by the regulation module and the control electrical signal output by other voltage control modules, the conduction state of the controllable switch device is regulated to determine the feedback signal transmitted to the power supply circuit. The above feedback signal is determined by screening the circuit structure composed of the controllable switch devices. There is no need to set up an additional processor for the distribution circuit to calculate the feedback signal, thereby ensuring the low cost of the distribution circuit.

[0258] In some embodiments, the feedback signal includes a feedback voltage value, and the feedback voltage value is determined based on the voltage value of the first control electrical signal or the second control electrical signal transmitted when the turned-on controllable switch device 2922 is turned on. In some embodiments, when the turn-on voltage of the controllable switch device is less than the product of the voltage value of the control electrical signal and the preset ratio, the feedback voltage value is the voltage value of the control electrical signal output by the controllable switch device, wherein the control electrical signal output by the controllable switch device includes the first control electrical signal or the second control electrical signal. Since the turn-on voltage of the controllable switch device is less than the product of the voltage value of the control electrical signal and the preset ratio, the turn-on voltage drop of the controllable switch device is negligible relative to the voltage value of the control electrical signal, and the calculation of the feedback voltage value does not consider the voltage value of the control electrical signal, which can simplify the calculation process and improve the calculation efficiency.

[0259] In some embodiments, when the on-voltage of the controllable switch device is greater than or equal to the product of the voltage value of the control electrical signal and a preset ratio, the feedback voltage value is the sum of the voltage value of the control electrical signal output by the controllable switch device and the on-voltage of the controllable switch device, wherein the control electrical signal output by the controllable switch device includes a first control electrical signal or a second control electrical signal. Since the on-voltage of the controllable switch device is greater than or equal to the product of the voltage value of the control electrical signal and a preset ratio, the on-voltage drop of the controllable switch device will affect the calculation accuracy of the voltage value of the control electrical signal, and the calculation of the feedback voltage value taking into account the voltage value of the control electrical signal can ensure accurate regulation of the output voltage value of the power supply circuit.

[0260] Fig.13A The equivalent schematic diagram of the distribution circuit including the controllable switch device is shown in FIG2921. The equivalent schematic diagram of the control module 2921 is a voltage source. The control module 2921 is configured to perform a logic operation based on the state information fed back from the corresponding data transmission module to determine the power-on state of the light-emitting unit group corresponding to the data transmission module. For example, in the fed-back state information, 1 indicates overvoltage and 0 indicates undervoltage. The state information of each partition is ANDed. When at least one light-emitting unit group is undervoltage, 0 is output. Otherwise, 1 is output. Based on the output result, the output electrical signal is determined: when the result of the logic operation is 0, the first control electrical signal is output; when the result of the logic operation is 1, the second control electrical signal is output.

[0261] In some embodiments, the voltage value of the first control electrical signal is less than the voltage value of the second control electrical signal, and the voltage value of the second control electrical signal is a default voltage value. When the regulation module 2921 outputs the first control electrical signal, the corresponding controllable switch device 2922 is turned on, and the voltage value at the input end of the controllable switch device 2922 is pulled down. The power supply circuit 13 is a circuit based on the voltage value as a negative feedback signal, which increases its output voltage value based on the lowered voltage value.

[0262] Since the output terminals of the controllable switch devices 2922 are connected in parallel, when at least one controllable switch device 2922 outputs the first control electrical signal, the voltage value obtained by the power supply circuit 13 is a voltage value determined based on the first control electrical signal and the conduction voltage of the controllable switch device 2922; when each controllable switch device 2922 outputs the second control electrical signal, the voltage value obtained by the power supply circuit 13 is a voltage value determined based on the second control electrical signal and the conduction voltage of the controllable switch device 2922; in some embodiments, the controllable switch device can be a diode, with the anode of the diode as the input terminal and the cathode as the output terminal. In other embodiments, the controllable switch device can be a P-type TFT device, the control terminal of which is electrically connected to the output terminal of the controllable switch device.

[0263] In the above technical solution, in the display device, multiple controllable switching devices jointly determine the feedback voltage value of the feedback signal transmitted to the power supply circuit based on the first control electrical signal and / or the second control electrical signal with different voltage values, so as to regulate the voltage value of the first power supply electrical signal output by the power supply circuit. The above control variable is single and the control logic is simple, which is convenient for the low-cost design of the distribution circuit structure.

[0264] In some embodiments, the current value of the first control electrical signal is different from the current value of the second control electrical signal, and the feedback signal is an electrical signal determined based on the current value of the control electrical signal.

[0265] refer to Fig.12D and Fig.12E In the circuit structure shown, the voltage control module 292 further includes a processing module 2923; the output end of the control module 2921 is electrically connected to the input end of the processing module 2923, and the output end of the processing module 2923 is electrically connected to the control end of the power supply circuit 13. The processing module 2923 is configured to determine the feedback current value based on the current value of the control electrical signal output by the control module 2921 to generate a feedback signal, wherein the feedback signal includes the feedback current value.

[0266] In the above technical solution, a processing module is set in the voltage control module, which is electrically connected in series between the output end of the regulation module and the control end of the power supply circuit. The processing module determines the feedback current value based on the current values ​​of different control signals to adapt to the power supply circuit with current feedback regulation.

[0267] In some embodiments, the display device includes a plurality of voltage control modules 292, and the plurality of voltage control modules 292 include a first voltage control module and a second voltage control module. The output end of the first voltage control module is electrically connected to the input end of the processing module 2923 in the second voltage control module. The processing module 2923 in the second voltage control module is configured to obtain a first feedback signal output by the first voltage control module, obtain a control electrical signal output by the regulation module 2921 in the second voltage control module, determine a second feedback current value based on the current value of the control electrical signal and the feedback current value of the first feedback signal, and output a second feedback signal; the second feedback signal includes the second feedback current value.

[0268] When two distribution circuits 290 are connected in cascade, the connection method of the two distribution circuits 290 and the voltage control module 292 inside them is as follows: Fig.12D As shown, the communication interface 298 of the first distribution circuit (the distribution circuit 290 located on the upper side) is electrically connected to the communication interface 297 of the second distribution circuit (the distribution circuit 290 located on the lower side) to transmit driving data, the output end of the voltage control module 292 of the second distribution circuit is electrically connected to the receiving end of the voltage control module 202 of the first distribution circuit, the receiving end of the voltage control module 202 of the first distribution circuit is electrically connected to the other output end of the processing module 2923 in the voltage control module 202, the processing module 2923 in the voltage control module 202 of the first distribution circuit processes the feedback signal output by the first distribution circuit and the control electrical signal generated by the first distribution circuit, and outputs the final feedback signal to the power supply circuit 13.

[0269] When two distribution circuits 290 are connected in parallel, the connection method of the two distribution circuits 290 and the voltage control module 292 inside them is as follows: Fig.12E As shown, the connection mode of the voltage control module 202 in the two distribution circuits 290 and the generation mode of the feedback signal can be the same as Fig.12D Similarly, the feedback signal output by the first distribution circuit may be transmitted to the second distribution circuit, and the second distribution circuit outputs a final feedback signal to the power supply circuit 13 .

[0270] In the above technical solution, when generating feedback signals, multiple voltage control modules not only consider the control electrical signals generated by the included regulation modules, but also consider the feedback signals output by other voltage control modules electrically connected to their input ends. In the cascade-connected voltage control modules, the voltage value of the final feedback signal is 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. Moreover, the voltage control modules are directly electrically 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.

[0271] In some embodiments, the processing module 2923 in the second voltage control module is configured to select a target electrical signal from the control electrical signal and the first feedback signal as the second feedback signal based on the current value of the control electrical signal and the feedback current value of the first feedback signal.

[0272] Fig. 13B The equivalent schematic diagram of the distribution circuit including the controllable switch device is shown in FIG2921. The equivalent schematic diagram of the control module 2921 is a current source. The control module 2921 is configured to perform a logic operation based on the state information fed back from the corresponding data transmission module to determine the power-on state of the light-emitting unit group corresponding to the data transmission module. For example, in the fed-back state information, 1 indicates overvoltage and 0 indicates undervoltage. The state information of each partition is ANDed. When at least one light-emitting unit group is undervoltage, 0 is output. Otherwise, 1 is output. Based on the output result, the output electrical signal is determined: when the result of the logic operation is 0, the first control electrical signal is output; when the result of the logic operation is 1, the second control electrical signal is output.

[0273] In some embodiments, the current value of the first control electrical signal is smaller than the current value of the second control electrical signal. When the processing module 2923 obtains a control electrical signal, the processing module 2923 outputs the control electrical signal as a feedback signal. When the processing module 2923 obtains multiple control electrical signals, the processing module 2923 selects the control electrical signal with the smallest current value from the multiple control electrical signals as the feedback signal.

[0274] In the above technical solution, the processing module determines the target electrical signal that most needs to be adjusted for power-on status from the control electrical signal and the received feedback signal through a preset screening mechanism, and uses the target electrical signal as the feedback signal to adjust the power supply circuit, so that during the power-on adjustment of the light-emitting unit group corresponding to the target electrical signal, the power-on status of other light-emitting unit groups is also adjusted accordingly, so that each light-emitting unit group on the backlight assembly meets the light-emitting requirements. The above circuit structure can effectively adjust the output voltage of the power supply circuit through simple control logic, which not only improves the adjustment efficiency but also ensures the low cost of the distribution circuit.

[0275] In some embodiments, the backlight assembly 20 includes a light board, the light board includes a light emitting unit group and a driving chip 202, and the distribution circuit 290 is disposed on the surface of the light board.

[0276] In the above technical solution, the distribution circuit is arranged on the surface of the light board, and can be electrically connected to the driving chip through the inter-board wiring of the light board. There is no need to set connecting wires between the distribution circuit and the light 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.

[0277] In some embodiments, the distribution circuit 290 further includes a temperature sampling unit, which is electrically connected to the first end of the distribution circuit 290 . The temperature sampling unit is configured to sample temperature information and output a temperature sampling signal to the controller 250 .

[0278] In the above technical solution, a temperature sampling unit is provided in the distribution circuit to sample the temperature of the backlight assembly, and there is no need to additionally provide a temperature sensor in the backlight assembly, thereby simplifying the circuit structure and installation cost of the backlight assembly.

[0279] 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 it. 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0280] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: A controller configured to obtain image data and generate backlight brightness data and display data; outputting the display data; outputting driving data based on the backlight brightness data; A display panel, electrically connected to the controller, configured to display a picture based on the display data; a distribution circuit, wherein a first end of the distribution circuit is electrically connected to the controller, and the distribution circuit is configured to output the driving data from a second end of the distribution circuit after obtaining the driving data; A backlight assembly is arranged on a side away from the display surface of the display panel, and the backlight assembly includes: A plurality of driving groups, wherein the second end of the distribution circuit is electrically connected to the first end of at least one driving group; the driving group comprises: at least one driving chip, the input end of the driving chip being electrically connected to the first end of the driving group, the driving chip being configured to obtain a driving data segment corresponding to the driving chip in the driving data, and output a driving signal based on the driving data segment; the driving data includes at least one driving data segment, and different driving chips correspond to different driving data segments; There are multiple light emitting unit groups, the driving chip is electrically connected to at least one of the light emitting unit groups, and the light emitting unit groups are configured to emit light based on the driving signal; wherein different driving chips are electrically connected to different light emitting unit groups.

2. The display device according to claim 1, characterized in that The distribution circuit comprises: A data transmission module, wherein a first end of the data transmission module is electrically connected to the controller, and a second end of the data transmission module is electrically connected to a driving group corresponding to the data transmission module, and the data transmission module is configured to output the preset number of driving data segments to the driving chips in the connected driving group after acquiring the preset number of driving data segments; Among them, different data transmission modules are electrically connected to different drive groups; The driving data obtained by the distribution circuit includes the preset number of driving data segments, and the preset number of driving data segments includes the at least one driving data segment.

3. The display device according to claim 2, characterized in that There are multiple data transmission modules, and the first ends of at least two of the data transmission modules are electrically connected; The data transmission module sets corresponding first identification information, and different data transmission modules connected to the first end have different corresponding first identification information; The data transmission module is configured to receive the preset number of driving data segments based on the first identification information corresponding to the data transmission module; The driving data segment includes the first identification information corresponding to the data transmission module.

4. The display device according to claim 3, characterized in that The distribution circuit further comprises a data receiving module, wherein the data receiving module is provided with at least one output terminal; The input end of the data receiving module is electrically connected to the first end of the distribution circuit, and the output end of the data receiving module is electrically connected to the first end of the data transmission group corresponding to the output end; The data transmission group comprises at least two data transmission modules connected at first ends, and the first end of the data transmission module is electrically connected to the first end of the data transmission group; wherein different output ends of the data receiving module correspond to different electrically connected data transmission groups; The data receiving module is configured to output driving data segments to the plurality of data transmission groups according to a preset data transmission sequence.

5. The display device according to claim 2, characterized in that The number of the data transmission modules is multiple, and the distribution circuit further includes a data receiving module, and the data receiving module is provided with multiple output terminals; In the distribution circuit, the input end of the data receiving module is electrically connected to the first end of the distribution circuit, and the output end of the data receiving module is electrically connected to a data transmission module corresponding to the output end; wherein different output ends of the data receiving module are electrically connected to different data transmission modules; The data receiving module is configured to output driving data segments to the plurality of data transmission modules according to a preset data transmission sequence.

6. The display device according to any one of claims 3 to 5, characterized in that: The data transmission module is provided with a corresponding first delay duration; The data transmission module is configured to output the driving data segment obtained by the data transmission module after a first delay time corresponding to the data transmission module, starting from an initial time corresponding to a frame start signal.

7. The display device according to claim 6, characterized in that The plurality of data transmission modules include at least two first data transmission modules; Different first data transmission modules correspond to different first delay durations.

8. The display device according to claim 7, characterized in that The data transmission module is provided with a corresponding second delay time length; The controller is configured to, starting from an initial moment corresponding to a frame start signal, output a driving data segment corresponding to the first data transmission module after a second delay time corresponding to the first data transmission module; The second delay duration corresponding to the first data transmission module is determined based on the first delay duration corresponding to the first data transmission module and the transmission duration for transmitting the drive data segment, and the transmission duration is the duration for the controller to transmit the drive data segment from the controller to the first data transmission module.

9. The display device according to claim 6, characterized in that The plurality of data transmission modules include at least two second data transmission modules; The first delay durations corresponding to different second data transmission modules are the same.

10. The display device according to claim 9, characterized in that The second data transmission module is provided with a corresponding third delay time length; The second data transmission module is configured to start receiving the driving data segment from the initial moment corresponding to the frame start signal after a third delay time corresponding to the second data transmission module; Among them, different second data transmission modules correspond to different third delay durations.

11. The display device according to any one of claims 2 to 5, characterized in that: The data transmission module is further configured to obtain status information from a connected driving group, wherein the status information is used to characterize a power-on status of a light-emitting unit group driven by the driving group connected to the data transmission module; The display device further includes a power supply circuit, which is respectively connected to the display panel, the controller, and the light-emitting unit group in the backlight assembly, and is configured to provide a power supply electrical signal; the power supply electrical signal includes a first power supply electrical signal for supplying power to the light-emitting unit group; The distribution circuit further comprises a voltage control module, an input end of the voltage control module is electrically connected to at least one data transmission module in the distribution circuit, and an output end of the voltage control module is electrically connected to the power supply circuit; The voltage control module is configured to obtain status information output by a data transmission module connected to the voltage control module; and generate a feedback signal at an output end of the voltage control module based on the status information; The power supply circuit is configured to adjust a voltage value of the first power supply electrical signal based on the feedback signal.

12. The display device according to claim 11, characterized in that The state information includes an undervoltage state or an overvoltage state; The voltage control module comprises a regulation module, an input end of the regulation module is electrically connected to at least one data transmission module in the distribution circuit, and an output end of the regulation module is electrically connected to an output end of the voltage control module; The control module is configured as follows: When the state information includes at least one of the undervoltage states, outputting a first control electrical signal; When the state information only includes the overvoltage state, outputting a second control electrical signal; The feedback signal is determined based on the first control electrical signal or the second control electrical signal; The first control electrical signal and the second control electrical signal have different values.

13. The display device according to claim 12, characterized in that The display device includes one voltage control module, and an output end of the regulation module is electrically connected to an output end of the voltage control module; The first control electrical signal or the second control electrical signal output by the regulation module serves as the feedback signal.

14. The display device according to claim 12, characterized in that The voltage value of the first control electrical signal is different from the voltage value of the second control electrical signal; The display device comprises a plurality of voltage control modules, and output ends of the plurality of voltage control modules are electrically connected; The voltage control module further comprises a controllable switch device, a first end of the controllable switch device is electrically connected to the output end of the regulation module, and a second end of the controllable switch device is electrically connected to the output end of the voltage control module; The controllable switch device is configured to be turned on when the connected regulation module outputs the first control electrical signal, and output the feedback signal based on the first control electrical signal; When the connected regulation module outputs the second control electrical signal and at least one other voltage control module electrically connected to the voltage control module where the controllable switch device is located outputs the first control electrical signal, the controllable switch device is turned off; When the connected regulation module outputs the second control electrical signal and other voltage control modules electrically connected to the voltage control module where the controllable switch device is located all output the second control electrical signal, the controllable switch device is turned on and the feedback signal is output based on the second control electrical signal.

15. The display device according to claim 14, characterized in that The feedback signal includes a feedback voltage value, and the feedback voltage value is determined based on a voltage value of a first control electrical signal or a second control electrical signal transmitted by the turned-on controllable switch device.

16. The display device according to claim 12, characterized in that The current value of the first control electrical signal is different from the current value of the second control electrical signal; The voltage control module also includes a processing module; The output end of the control module is electrically connected to the input end of the processing module, and the output end of the processing module is electrically connected to the control end of the power supply circuit; The processing module is configured to determine a feedback current value based on a current value of a control electrical signal output by the regulation module; The feedback signal includes the feedback current value.

17. The display device according to claim 16, characterized in that The display device includes a plurality of voltage control modules, and the plurality of voltage control modules include a first voltage control module and a second voltage control module; The output end of the first voltage control module is electrically connected to the input end of the processing module in the second voltage control module; The processing module in the second voltage control module is configured to obtain a first feedback signal output by the first voltage control module; Obtaining a control electrical signal output by a regulating module in the second voltage control module; determining a second feedback current value based on the current value of the control electrical signal and the feedback current value of the first feedback signal; A second feedback signal is output; the second feedback signal includes the second feedback current value.

18. The display device according to claim 17, characterized in that The processing module in the second voltage control module is configured to select a target electrical signal from the control electrical signal and the first feedback signal as the second feedback signal based on the current value of the control electrical signal and the feedback current value of the first feedback signal.

19. The display device according to any one of claims 1 to 5, characterized in that: The number of the distribution circuits is multiple; At least two distribution circuits are cascaded via a communication bus, wherein a first-stage distribution circuit is electrically connected to a communication interface of the controller via the communication bus.

20. The display device according to claim 19, characterized in that The communication bus is configured to transmit the driving data along a first direction, which is a direction from the controller to a distribution circuit at a last stage in a cascade of distribution circuits.

21. The display device according to claim 20, characterized in that The distribution circuit comprises a register, the register is electrically connected to a data transmission module in the distribution circuit, the register is configured to store register information, the register information comprises status information obtained by the data transmission module from a connected driving group; The register is electrically connected to a first end of the distribution circuit, the first end of the distribution circuit is electrically connected to the communication bus, and the communication bus is also configured to transmit the register information along a second direction, wherein the second direction is from the last-stage distribution circuit in the cascaded distribution circuit to the controller.

22. The display device according to any one of claims 1 to 5, characterized in that: The number of the distribution circuits is multiple; At least one distribution circuit is cascade-connected to form a distribution group; The distribution groups include different distribution circuits; At least two distribution groups are electrically connected in parallel, wherein the first ends of the first-stage distribution circuits in each parallel distribution group are electrically connected, and the connection points of the at least two distribution groups are electrically connected via a communication bus and a communication interface of the controller.

23. The display device according to claim 22, characterized in that In each of the distribution groups connected in parallel, at least one distribution circuit is provided with a gating end, and the at least one distribution circuit provided with the gating end includes a first-stage distribution circuit in the distribution group; The strobe terminal is electrically connected to the control terminal of the controller; The controller is configured to output a strobe signal from the control terminal and output the driving data from the communication interface; wherein the strobe signal includes second identification information, and the second identification information corresponding to the distribution circuits in different driving groups is different; The distribution circuit electrically connected to the control terminal of the controller is configured to obtain the driving data; When obtaining a strobe signal corresponding to the distribution circuit, outputting the driving data; When the selection signal corresponding to the distribution circuit is not obtained, the driving data is not output.

24. The display device according to claim 23, characterized in that The driving group includes a plurality of distribution circuits provided with a strobe terminal; In the same driving group, the second identification information corresponding to the plurality of distribution circuits provided with the strobe terminals is the same.

25. The display device according to any one of claims 1 to 5, characterized in that: The backlight assembly comprises a light board, and the light board comprises the light emitting unit group and the driving chip; The distribution circuit is arranged on the surface of the light board.

26. The display device according to any one of claims 1 to 5, characterized in that: The distribution circuit also includes a temperature sampling unit; The temperature sampling unit is electrically connected to the first end of the distribution circuit, and the temperature sampling unit is configured to sample temperature information and output a temperature sampling signal to the controller.

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