Display module, control updating method thereof and display device

Abstract

The application provides a display module, a control updating method thereof and a display device. The display module comprises a display component, the display component comprises a timing control board card, the timing control board card is configured with a first interface, the first interface is configured to establish a read-write connection between the timing control board card and a main control circuit of a complete machine, and the main control circuit of the complete machine is configured to burn a display control updating program into the timing control board card through the first interface. The display module can establish the read-write connection between the timing control board card and the main control circuit of the complete machine through the first interface configured at the end of the timing control board card, thereby greatly reducing the work burden and cost of burning the display control updating program by the display module, and realizing the intelligent burning of the display control updating program of the display module.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of display, and particularly relates to a display module, a control updating method thereof and a display device. BACKGROUND

[0002] With the development of Internet of Things technology, display terminals are increasingly developing towards intelligence, and pursuing intelligent production process of display terminals and improving production efficiency are also common pursuit goals of the industry. SUMMARY

[0003] The present application provides a display module, a control updating method thereof and a display device, which greatly reduce the work burden and cost of burning the display control updating program, and realize intelligent burning of the display control updating program of the display module.

[0004] The present application provides a display module, which comprises a display component,

[0005] The display component comprises a timing control board card, which is configured with a first interface,

[0006] The first interface is configured to establish a read-write connection between the timing control board card and a main control circuit of a whole machine; and the main control circuit of the whole machine is configured to burn a display control updating program into the timing control board card through the first interface.

[0007] In some embodiments, the timing control board card comprises a timing control circuit, and the timing control board card further comprises a power management circuit or a gray-scale voltage generation control circuit,

[0008] The timing control circuit is configured with a first sub-interface, which is configured to establish a read-write connection between the timing control circuit and the first interface; and the main control circuit of the whole machine is configured to burn a timing control updating program into the timing control circuit through the first sub-interface.

[0009] The power management circuit is configured with a second sub-interface, which is configured to establish a read-write connection between the power management circuit and the first interface; and the main control circuit of the whole machine is further configured to burn a reference voltage debugging control program into the power management circuit through the second sub-interface.

[0010] The gray-scale voltage generation control circuit is configured with a third sub-interface, which is configured to establish a read-write connection between the gray-scale voltage generation control circuit and the first interface; and the main control circuit of the whole machine is further configured to burn a reference voltage debugging control program into the gray-scale voltage generation control circuit through the third sub-interface.

[0011] In some embodiments, the first sub-interface, the second sub-interface and the third sub-interface have different addresses.

[0012] In some embodiments, the timing control board further comprises a first memory, the first memory is read-write connected with the timing control circuit,

[0013] The first memory comprises a first interval and a second interval, the first interval and the second interval are configured to store the same initial timing control program before the timing control update program is burned,

[0014] The second interval is configured to store the timing control update program after the timing control update program is successfully burned, and the initial timing control program stored therein is damaged or lost after the timing control update program is unsuccessfully burned;

[0015] The first interval is configured to always store the initial timing control program before and after the timing control update program is burned.

[0016] In some embodiments, the timing control circuit is configured to read back a check value after the timing control update program is burned to the first memory, and feed back the check value to the main control circuit of the whole machine;

[0017] The main control circuit of the whole machine is further configured to compare the check value with the timing control update program, and confirm that the burning is successful when the comparison result is consistent; and re-burn the timing control update program into the first memory when the comparison result is inconsistent.

[0018] In some embodiments, further comprising a peripheral circuit board card, which is bound to connect with the display assembly,

[0019] The peripheral circuit board card comprises a second memory, the second memory is read-write connected with the timing control circuit, and the second memory is configured to store an initial display defect erasing control program before the display defect erasing control program update is erased, and store a display defect erasing control update program after the display defect erasing control program update is erased.

[0020] In some embodiments, the first interface comprises an I2C interface;

[0021] The first sub-interface, the second sub-interface and the third sub-interface comprise an I2C interface.

[0022] In some embodiments, further comprising a backlight source, the backlight source is configured to provide display backlight for the display assembly,

[0023] The backlight includes a power conversion board, which is equipped with a second interface.

[0024] The second interface is configured to establish a read / write connection between the power conversion board and the main control circuit of the whole machine;

[0025] The power conversion board includes microcontroller circuitry.

[0026] The main control circuit of the whole machine is also configured to burn the local dimming control update program into the microcontroller circuit through the second interface.

[0027] In some embodiments, the second interface includes an SWD serial debug interface.

[0028] In some embodiments, the second interface reuses unused terminals of the power conversion board.

[0029] In some embodiments, the display control update program and the local dimming control update program are stored in a mobile storage device or a cloud storage device.

[0030] The main control circuit of the whole machine is configured to read the display control update program and the local dimming control update program from the mobile memory and burn the display control update program and the local dimming control update program through the on-site remote screen menu.

[0031] Alternatively, the main control circuit of the whole machine is configured to read the display control update program and the local dimming control update program from the cloud memory and burn the display control update program and the local dimming control update program through remote control or network push.

[0032] The present invention also provides a control update method for the above-mentioned display module, comprising: configuring a first interface on the timing control board of the display component;

[0033] A read / write connection is established between the timing control board and the main control circuit of the whole machine through the first interface, and the main control circuit of the whole machine burns the display control update program into the timing control board.

[0034] In some embodiments, establishing a read / write connection between the timing control board and the main control circuit of the whole machine through the first interface, and having the main control circuit of the whole machine burn the display control update program into the timing control board, includes:

[0035] The timing control circuit of the timing control board is configured with a first sub-interface;

[0036] A read / write connection is established between the timing control circuit and the first interface through the first sub-interface; the main control circuit of the whole machine burns the timing control update program into the timing control circuit;

[0037] The power management circuit of the timing control board is configured with a second sub-interface;

[0038] A read / write connection is established between the power management circuit and the first interface through the second sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the power management circuit;

[0039] Alternatively, the grayscale voltage generation control circuit of the timing control board may be configured with a third sub-interface;

[0040] A read / write connection is established between the grayscale voltage generation control circuit and the first interface through the third sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the grayscale voltage generation control circuit.

[0041] In some embodiments, the method further includes: dividing the first memory of the timing control board into a first interval and a second interval, wherein the first interval and the second interval store the same initial timing control program before the timing control update program is burned;

[0042] The main control circuit of the whole machine burns the timing control update program into the second interval;

[0043] The timing control circuit reads back the verification value and feeds the verification value back to the main control circuit of the whole machine;

[0044] The main control circuit of the whole machine compares the verification value with the timing control update program;

[0045] When the comparison results are consistent, the burning is confirmed to be successful, and the display component displays according to the timing control update program; when the comparison results are inconsistent, the display component is powered off and restarted, and the display component displays according to the initial timing control program, and the main control circuit of the whole machine burns the timing control update program to the second interval again.

[0046] In some embodiments, the backlight power conversion board is further configured with a second interface;

[0047] A read / write connection is established between the power conversion board and the main control circuit of the whole machine through the second interface; the main control circuit of the whole machine burns the local dimming control update program into the microcontroller circuit of the power conversion board.

[0048] The present invention also provides a display device, including a main control circuit and the aforementioned display module.

[0049] The display module is equipped with a first interface; or, the display module is equipped with a first interface and a second interface.

[0050] The first interface and the second interface are configured to establish a read-write connection between the display module and the main control circuit.

[0051] The beneficial effects of the present invention are as follows: The display module provided by the present invention can establish a read / write connection between the timing control board and the main control circuit of the whole machine through the first interface configured on the timing control board. This enables the main control circuit of the whole machine to burn the display control update program into the timing control board through the first interface. This burning process can be performed directly through the first interface, without the need to return the display module to the factory for burning. It also eliminates the need to disassemble the whole machine casing including the display module during burning, thereby greatly reducing the workload and cost of burning the display control update program for the display module and realizing intelligent burning of the display control update program for the display module.

[0052] The display device provided by the present invention, by adopting the above-mentioned display module, eliminates the need to disassemble the display device for updating the display control program, thereby greatly reducing the workload and cost of updating the display control program and the local dimming control program, and realizing intelligent updating of the display control program. Attached Figure Description

[0053] Figure 1 This is a schematic diagram showing that the main control circuit of the whole machine and the timing control board of the display module are not connected.

[0054] Figure 2 This is a schematic diagram of the current I2C interface connection design for the timing control board.

[0055] Figure 3 This is a schematic diagram illustrating the connection established between the timing control board of the display module and the main control circuit of the whole machine through the first interface in an embodiment of the present invention;

[0056] Figure 4 This is a schematic diagram of the I2C interface connection design of the timing control board in an embodiment of the present invention;

[0057] Figure 5a This is a dual image architecture diagram of the timing control program in an embodiment of the present invention;

[0058] Figure 5b This is a schematic diagram illustrating the process of successful burning in a single operation under the Dual image architecture of the timing control program in an embodiment of the present invention.

[0059] Figure 5c This is a schematic diagram illustrating the process of needing to re-burn when the first burning fails under the Dual image architecture of the timing control program in an embodiment of the present invention.

[0060] Figure 6 A one-image architecture diagram of timing control procedures in traditional designs;

[0061] Figure 7 This is a schematic diagram illustrating the connection between the power conversion board of the display module and the main control circuit of the whole machine through the second interface in an embodiment of the present invention.

[0062] The reference numerals in the attached figures are:

[0063] 1. Display component; 11. Timing control board; 110. Timing control circuit; 111. Power management circuit; 112. Grayscale voltage generation control circuit; 113. First memory; 12. First interface; 2. Main control circuit of the whole machine; 3. Peripheral circuit board; 30. Second memory; 4. Backlight; 40. Power conversion board; 401. Microcontroller circuit; 41. Second interface. Detailed Implementation

[0064] To enable those skilled in the art to better understand the technical solution of the present invention, a display module and its control and update method and display device of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] As a smart display terminal, a TFT LCD (Liquid Crystal Display) module consists of two parts: the display component (Open Cell, OC, i.e., the LCD screen) and the backlight (BLU). The display component's display driving requires a timing control board (TCON) for control, which involves both hardware and software design. Similarly, the backlight's illumination driving requires a power conversion board (Converter) for control, also involving both hardware and software design. Backlights requiring power conversion board control are primarily for models with local dimming configurations.

[0066] The software (i.e., the program) serves as the core setting parameter for the driver board of the LCD display module. It relates to the basic functional implementation of the timing control board and power conversion board, as well as the realization of various functions and parameters such as image quality algorithm processing, local dimming control, and problem improvement. It is set up by the panel manufacturer before mass production and shipment to the OEM customer.

[0067] With the development of display technology, more and more OEM customers are requesting screen manufacturers to grant them access to read and write software (i.e., programs). Currently, the main approach is to grant access to read and write the Vcom (reference voltage for grayscale display) of the display module. By adjusting the Vcom of the display module, OEM manufacturers can adjust the flicker of the display components to the optimal level to improve the display quality. This is mainly applicable to large-size display products where the timing control board and the display components are shipped separately.

[0068] Leading brand OEM customers possess strong technical capabilities, and an increasing number of them are requesting screen manufacturers to grant software read / write permissions to their display modules. The main reasons for this demand are as follows:

[0069] 1. Branded OEM customers have a wide product range, including overseas terminal applications. When product problems occur and software upgrades for display modules are needed, on-site or return-to-factory after-sales costs are high. There is an urgent need for remote intelligent software burning function to reduce after-sales costs. This can also reduce after-sales costs for screen manufacturers.

[0070] 2. In the new product development stage, in order to improve development efficiency and shorten the development cycle, the design and development of display components and the design and development of the main control circuit (SoC) system are usually carried out simultaneously. In the certification stage after the display module is assembled into a complete machine, the display quality and display parameter adjustment or matching issues are resolved. It is often necessary to upgrade the software of the timing control board or power conversion board of the display module, and there is a need to burn new software in the state of the complete machine.

[0071] Third, when developing complete systems for different applications, brand OEMs often consider comprehensive factors such as the functionality of the main system control circuit (SoC) and cost reduction. They frequently use the same display component with different models and functions of the SoC. When compatibility issues arise, some SoC SoCs may be compatible, while others may not. Debugging methods for the SoC SoC are sometimes limited, requiring the OEM to perform software upgrades on the timing control board or power conversion board of the display module while the entire system is in operation. There is also a need to flash new software while the entire system is in operation.

[0072] Currently, display panel manufacturers primarily upgrade display module software through I2C probes or dedicated programming interfaces. This is mainly suitable for upgrading a small number of display components or display modules during the development phase, but not for software upgrades at the entire device level. To upgrade the software of a complete device, the back cover of the device in the manufacturer's inventory needs to be removed to expose the display module, and the board cover needs to be removed to expose the timing control board or power conversion board. Then, programming can be performed via probes or a dedicated programming interface. Devices sold in the market require after-sales service to return them to the factory for disassembly and programming. Disassembly and programming are labor-intensive, difficult, and costly, representing a significant workload and expense for both the device manufacturer and the display panel manufacturer.

[0073] like Figure 1 As shown, currently the I2C interface on the main control circuit (SoC board) and the I2C interface on the display module timing control board are not connected. The I2C interface on the timing control (TCON) board is only used by the screen manufacturer for Vcom (reference voltage for grayscale implementation) debugging to adjust the flicker of the display components to the optimal level. The communication protocol of the timing control board's I2C interface is not exposed to the main control circuit. The wiring design of the timing control board's I2C interface is as follows. Figure 2 As shown, only the I2C interface between SDAG (data channel for Vcom voltage debugging) and SCLG (clock channel for Vcom voltage debugging) and the timing control board is maintained; and in actual programming, the device must be disassembled to expose SDAG and SCLG before programming can be performed.

[0074] In addition, in the current design, the microcontroller circuit (MCU) on the power conversion board of the backlight is programmed via the SWD serial debugging interface, but the SWD serial debugging interface has no hardware read / write connection with the main control circuit of the whole machine.

[0075] To address the issue that upgrading the display module software in a current system requires disassembling the device for flashing, this invention provides a display module, such as... Figure 3 As shown, the device includes a display component 1, which includes a timing control board 11. The timing control board 11 is equipped with a first interface 12, which is configured to establish a read / write connection between the timing control board 11 and the main control circuit 2 of the whole machine. The main control circuit 2 of the whole machine is configured to burn the display control update program into the timing control board 11 through the first interface 12.

[0076] In this embodiment, a read / write connection can be established between the timing control board 11 and the main control circuit 2 of the whole machine through the first interface 12 configured on the timing control board 11. This allows the main control circuit 2 of the whole machine to burn the display control update program into the timing control board 11 through the first interface 12. This burning process can be performed directly through the first interface 12 without having to return the display module to the factory for burning. During the burning process, it is also not necessary to disassemble the whole machine casing including the display module, thereby greatly reducing the workload and cost of burning the display control update program for the display module and realizing intelligent burning of the display control update program for the display module.

[0077] In some embodiments, such as Figure 3 and Figure 4 As shown, the timing control board 11 includes a timing control circuit 110, and also includes a power management circuit 111 or a grayscale voltage generation control circuit 112. The timing control circuit 110 is configured with a first sub-interface, which is configured to establish a read / write connection between the timing control circuit 110 and the first interface 12. The main control circuit 2 is configured to burn the timing control update program into the timing control circuit 110 through the first sub-interface. The power management circuit 111 is configured with a second sub-interface, which is configured to... A read / write connection is established between the power management circuit 111 and the first interface 12; the main control circuit 2 is also configured to burn the reference voltage debugging control program into the power management circuit 111 through the second sub-interface; the grayscale voltage generation control circuit 112 is equipped with a third sub-interface, which is configured to establish a read / write connection between the grayscale voltage generation control circuit 112 and the first interface 12; the main control circuit 2 is also configured to burn the reference voltage debugging control program into the grayscale voltage generation control circuit 112 through the third sub-interface.

[0078] In some embodiments, the first interface 12 includes an I2C interface; the first sub-interface, the second sub-interface, and the third sub-interface include I2C interfaces.

[0079] In some embodiments, such as Figure 4 As shown, the first interface 12 has a data channel SDA and a clock channel SCL. The first sub-interface has a timing control data channel SDAT and a timing control clock channel SCLT. The second sub-interface has a reference voltage adjustment data channel SDAP and a reference voltage adjustment clock channel SCLP. The third sub-interface has a reference voltage adjustment data channel SDAG and a reference voltage adjustment clock channel SCLG.

[0080] In some embodiments, such as Figure 4 As shown, the addresses of the first sub-interface, the second sub-interface, and the third sub-interface are different.

[0081] The first interface 12 is designed as a multiplexed interface, simultaneously connecting to the first sub-interfaces (SDAT and SCLT) of the timing control circuit 110, the second sub-interfaces (SDAP and SCLP) of the power management circuit 111, and the third sub-interfaces (SDAG and SCLG) of the grayscale voltage generation control circuit 112. Since the addresses of the first, second, and third sub-interfaces are different, the first interface 12 can perform software upgrades and programming on the timing control circuit 110, power management circuit 111, and grayscale voltage generation control circuit 112 based on their addresses (e.g., first sub-interface address: 0x40; second sub-interface address: 0x50; third sub-interface address: 0x60). Programming the software of any one circuit will not interfere with the other two.

[0082] In some embodiments, such as Figure 3 , Figure 5a , Figure 5b and Figure 5c As shown, the timing control board 11 also includes a first memory 113, which is readable and writable connected to the timing control circuit 110. The first memory 113 includes a first interval image1 and a second interval image2. The first interval image1 and the second interval image2 are configured to store the same initial timing control program Old code before the timing control update program is burned. The second interval image2 is configured to store the timing control update program New code after the timing control update program is successfully burned. If the timing control update program fails to burn, the initial timing control program stored therein is damaged or lost (i.e., it is NG code). The first interval image1 is configured to always store the initial timing control program Old code before and after the timing control update program is burned.

[0083] In traditional design, such as Figure 6 As shown, the timing control program is stored in memory (such as flash, non-volatile memory). Traditional timing control programs use a one-image architecture, which is a single timing control program; for example:

[0084]

[0085] The timing control program file size for the one-image architecture is 614KB. When updating the timing control program in the device state, it must be done under normal display conditions. Display abnormalities mainly refer to unexpected power outages or programming failures during the programming process. When updating the timing control program in the device state, display abnormalities can cause damage or loss to the initial timing control program and the timing control update program within the timing control circuit. In this case, because the display component cannot show the programming operation interface, it is impossible to program again. Therefore, under the traditional one-image timing control program architecture, 100% programming success cannot be guaranteed.

[0086] In this embodiment, the timing control program adopts a dual image architecture, meaning that the two timing control programs stored in the first interval image1 and the second interval image2 are combined into a single timing control program file, such as:

[0087]

[0088] The size of the timing control program file for the dual image architecture is [value].

[0089] In some embodiments, the timing control circuit 110 is configured to read back the verification value after the timing control update program is burned into the first memory 113, and feed the verification value back to the main control circuit 2 of the whole machine; the main control circuit 2 of the whole machine is further configured to compare the verification value with the timing control update program, and if the comparison result is consistent, confirm that the burning is successful; if the comparison result is inconsistent, burn the timing control update program into the first memory 113 again.

[0090] In this embodiment, under the Dual image architecture, when the main control circuit 2 of the whole machine burns the timing control update program New code, it only upgrades and updates the timing control program in the second interval image2. The initial timing control program Old code in the first interval image1 serves as a backup program to light up the display component 1. When the burning fails and the display cannot be displayed, the main control circuit 2 of the whole machine restarts the display component 1, and the display component 1 can roll back to the initial timing control program Old code in the first interval image1 and display normally. At this time, the timing control update program New code can be burned again to update the timing control update program New code in the second interval image2.

[0091] In some embodiments, the Dual Image architecture scheme of the timing control program is mainly applicable to the update of the timing control program in the timing control circuit 110, and is not applicable to the reference voltage debugging control program in the power management circuit 111 and the reference voltage debugging control program in the grayscale voltage generation control circuit 112. This is because the program upgrade of the display component 1 mainly involves the timing control program upgrade requirement, while the upgrade requirements of other control programs are relatively few.

[0092] In some embodiments, such as Figure 3 As shown, the first memory 113 and the timing control circuit 110 are connected via an SPI bus for reading and writing.

[0093] In some embodiments, the first memory 113 is a flash memory (non-volatile memory).

[0094] In some embodiments, such as Figure 3 As shown, the display module also includes a peripheral circuit board card 3, which is bound to the display component 1. The peripheral circuit board card 3 includes a second memory 30, which is readable and writable connected to the timing control circuit 110. The second memory 30 is configured to store the initial erase display failure control program before the erase display failure control program is updated, and to store the erase display failure control update program after the erase display failure control program is updated.

[0095] In some embodiments, the second memory 30 and the timing control circuit 110 are readable and writable connected via an SPI bus. The timing control circuit 110 receives the erase display malfunction control update program sent by the main control circuit 2 through the first interface 12 and the first sub-interface, and then writes the erase display malfunction control update program into the second memory 30 via the SPI bus, thereby realizing the update of the erase display malfunction control program in the peripheral circuit board card 3.

[0096] In some embodiments, the second memory 30 is a flash memory (non-volatile memory).

[0097] In some embodiments, such as Figure 7 As shown, based on the above-mentioned display module, the display module also includes a backlight 4, which is configured to provide display backlight to the display component 1. The backlight 4 includes a power conversion board 40, which is equipped with a second interface 41. The second interface 41 is configured to establish a read / write connection between the power conversion board 40 and the main control circuit 2 of the whole machine. The power conversion board 40 includes a microcontroller circuit 401, and the main control circuit 2 of the whole machine is also configured to burn the local dimming control update program into the microcontroller circuit 401 through the second interface 41.

[0098] Among them, the microcontroller circuit 401 is the MCU. The main control circuit 2 of the whole machine is connected to the power conversion board 40 of the backlight 4 through the second interface 41. The main control circuit 2 of the whole machine can develop a communication program through the second interface 41 to perform local dimming control program reading and writing control on the microcontroller circuit 401 on the power conversion board 40 of the backlight 4, thereby realizing the update of the local dimming control program in the power conversion board 40.

[0099] In some embodiments, the second interface 41 includes an SWD (Serial Wire Debug) interface. The SWD serial debug interface only requires SWCLK and SWDIO for communication, occupying fewer pins on the power conversion board 40 and fewer connector channels, eliminating the need for additional chip circuitry or connectors to implement this interface. During programming the SWD serial debug interface, the microcontroller circuit 401 does not require a power supply; only a 3.3V power supply is needed within the SWD serial debug interface.

[0100] In some embodiments, the second interface 41 reuses the unused terminals of the power conversion board 40. That is, the second interface 41 configured on the power conversion board 40 is based on the unused channels (pins) in the design interface of the power conversion board 40, without the need for additional connectors.

[0101] In this embodiment, for a complete display product with Local Diming, the microcontroller circuit 401 on the backlight power conversion board 40 needs to be configured with a local dimming control program to work properly. Therefore, the backlight that needs to be controlled by the power conversion board 40 is mainly for complete display products with Local Diming, such as splicing screens with Local Diming. The splicing screen includes multiple display modules, and the backlight of each display module needs to be configured with a power conversion board 40 with local dimming control.

[0102] In some embodiments, the display control update program and the local dimming control update program are stored in a mobile memory or a cloud memory. The main control circuit 2 of the whole machine is configured to read the display control update program and the local dimming control update program from the mobile memory and burn the display control update program and the local dimming control update program through the on-site remote control screen menu; or, the main control circuit 2 of the whole machine is configured to read the display control update program and the local dimming control update program from the cloud memory and burn the display control update program and the local dimming control update program through remote control or network push.

[0103] For example, when programming display control and local dimming control updates for the entire device, these updates are stored on a USB flash drive or cloud storage and can be programmed either on-site or remotely. On-site programming is primarily suitable for the development phase and the pre-production and shipment phase, typically achieved through on-site remote control of the on-screen menu (OSD). Remote programming is mainly suitable for devices already shipped to the market, where after-sales personnel can remotely control or push the update program to the display control and local dimming control updates for the device.

[0104] Based on the hardware architecture of the display module described above, this embodiment of the invention also provides a control update method for the display module, including: configuring a first interface on the timing control board of the display component;

[0105] A read / write connection is established between the timing control board and the main control circuit of the whole machine through the first interface. The main control circuit of the whole machine will burn the display control update program into the timing control board.

[0106] In some embodiments, a read / write connection is established between the timing control board and the main control circuit of the whole machine through the first interface. The main control circuit of the whole machine burns the display control update program into the timing control board, including: configuring the timing control circuit of the timing control board with the first sub-interface.

[0107] A read / write connection is established between the timing control circuit and the first interface through the first sub-interface; the main control circuit of the whole machine burns the timing control update program into the timing control circuit;

[0108] The power management circuit of the timing control board is configured with a second sub-interface;

[0109] A read / write connection is established between the power management circuit and the first interface through the second sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the power management circuit;

[0110] Alternatively, the grayscale voltage generation control circuit of the timing control board can be configured with a third sub-interface;

[0111] A read / write connection is established between the grayscale voltage generation control circuit and the first interface through the third sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the grayscale voltage generation control circuit.

[0112] In some embodiments, the control update method for the display module further includes: dividing the first memory of the timing control board into a first interval and a second interval, wherein the first interval and the second interval store the same initial timing control program before the timing control update program is burned;

[0113] The main control circuit of the whole machine burns the timing control update program to the second interval;

[0114] The timing control circuit reads back the verification value and feeds the verification value back to the main control circuit of the whole machine;

[0115] The main control circuit of the whole machine compares the verification value with the timing control update program;

[0116] When the comparison results are consistent, the programming is confirmed to be successful, and the display component displays according to the timing control update program; when the comparison results are inconsistent, the display component is powered off and restarted, and the display component displays according to the initial timing control program. The main control circuit of the whole machine then programs the timing control update program to the second interval again.

[0117] In some embodiments, the control update method for the display module further includes: configuring a second interface on the power conversion board of the backlight;

[0118] A read / write connection is established between the power conversion board and the main control circuit of the whole machine through the second interface; the main control circuit of the whole machine burns the local dimming control update program into the micro control circuit of the power conversion board.

[0119] The display module provided in this embodiment of the invention can establish a read / write connection between the timing control board and the main control circuit of the whole machine through a first interface configured on the timing control board. This allows the main control circuit of the whole machine to burn the display control update program into the timing control board through the first interface. This burning process can be performed directly through the first interface, without the need to return the display module to the factory for burning. It also eliminates the need to disassemble the whole machine casing including the display module during burning, thereby greatly reducing the workload and cost of burning the display control update program for the display module and realizing intelligent burning of the display control update program for the display module.

[0120] This invention also provides a display device, including a main control circuit and a display module as described in the above embodiments. The display module is configured with a first interface; or, the display module is configured with a first interface and a second interface, the first interface and the second interface being configured to establish a read-write connection between the display module and the main control circuit.

[0121] By adopting the above-mentioned display module, the display control program of the display device no longer needs to be disassembled to update the display device, thereby greatly reducing the workload and cost of updating the display control program and local dimming control program of the display device, and realizing intelligent updating of the display control program of the display device.

[0122] The display device can be any product or component with display function, such as an LCD panel, LCD TV, electronic paper, mobile phone, tablet computer, laptop computer, monitor, digital photo frame, or navigator.

[0123] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display module, comprising display components, The display component includes a timing control board, which is configured with a first interface. Its features are, The first interface is configured to establish a read / write connection between the timing control board and the main control circuit of the whole machine; the main control circuit of the whole machine is configured to burn the display control update program into the timing control board through the first interface; The timing control board includes a timing control circuit and a first memory, wherein the first memory is readable and writable connected to the timing control circuit. The first memory includes a first interval and a second interval, which are configured to store the same initial timing control program before the timing control update program is burned. The second interval is configured to store the timing control update program after the timing control update program is successfully burned, and the initial timing control program stored therein is damaged or lost after the timing control update program fails to be burned. The first interval is configured to always store the initial timing control program before and after the timing control update program is burned; The timing control circuit is configured to read back the verification value after the timing control update program is burned into the first memory, and feed the verification value back to the main control circuit of the whole machine. The main control circuit of the whole machine is also configured to compare the verification value with the timing control update program, and confirm successful burning when the comparison result is consistent; and burn the timing control update program into the first memory again when the comparison result is inconsistent.

2. The display module according to claim 1, characterized in that, The timing control board also includes a power management circuit or a grayscale voltage generation control circuit. The timing control circuit is configured with a first sub-interface, which is configured to establish a read / write connection between the timing control circuit and the first interface; the main control circuit of the whole machine is configured to burn the timing control update program into the timing control circuit through the first sub-interface. The power management circuit is equipped with a second sub-interface, which is configured to establish a read / write connection between the power management circuit and the first interface; the main control circuit of the whole machine is also configured to burn the reference voltage debugging control program into the power management circuit through the second sub-interface; The grayscale voltage generation control circuit is equipped with a third sub-interface, which is configured to establish a read / write connection between the grayscale voltage generation control circuit and the first interface; the main control circuit of the whole machine is also configured to burn the reference voltage debugging control program into the grayscale voltage generation control circuit through the third sub-interface.

3. The display module according to claim 2, characterized in that, The addresses of the first sub-interface, the second sub-interface, and the third sub-interface are different.

4. The display module according to claim 2, characterized in that, It also includes peripheral circuit board cards, which are bound and connected to the display component. The peripheral circuit board includes a second memory, which is readable and writable connected to the timing control circuit. The second memory is configured to store an initial erase display failure control program before the erase display failure control program is updated, and to store an updated erase display failure control program after the erase display failure control program is updated.

5. The display module according to claim 2, characterized in that, The first interface includes an I2C interface; The first sub-interface, the second sub-interface, and the third sub-interface include I2C interfaces.

6. The display module according to claim 1, characterized in that, It also includes a backlight, which is configured to provide display backlighting to the display assembly. The backlight includes a power conversion board, which is equipped with a second interface. The second interface is configured to establish a read / write connection between the power conversion board and the main control circuit of the whole machine; The power conversion board includes microcontroller circuitry. The main control circuit of the whole machine is also configured to burn the local dimming control update program into the microcontroller circuit through the second interface.

7. The display module according to claim 6, characterized in that, The second interface includes the SWD serial debugging interface.

8. The display module according to claim 7, characterized in that, The second interface reuses the unused terminals of the power conversion board.

9. The display module according to claim 6, characterized in that, The display control update program and the local dimming control update program are stored in a mobile storage device or a cloud storage device. The main control circuit of the whole machine is configured to read the display control update program and the local dimming control update program from the mobile memory and burn the display control update program and the local dimming control update program through the on-site remote screen menu. Alternatively, the main control circuit of the whole machine is configured to read the display control update program and the local dimming control update program from the cloud memory and burn the display control update program and the local dimming control update program through remote control or network push.

10. A control update method for a display module as described in any one of claims 1-9, characterized in that, include: The timing control board of the display component is configured with the first interface; A read / write connection is established between the timing control board and the main control circuit of the whole machine through the first interface, and the main control circuit of the whole machine burns the display control update program to the timing control board. It also includes: dividing the first memory of the timing control board into a first interval and a second interval, wherein the first interval and the second interval store the same initial timing control program before the timing control update program is burned; The main control circuit of the whole machine burns the timing control update program into the second interval; The timing control circuit reads back the verification value and feeds the verification value back to the main control circuit of the whole machine; The main control circuit of the whole machine compares the verification value with the timing control update program; When the comparison results are consistent, the burning is confirmed to be successful, and the display component displays according to the timing control update program; when the comparison results are inconsistent, the display component is powered off and restarted, and the display component displays according to the initial timing control program, and the main control circuit of the whole machine burns the timing control update program to the second interval again.

11. The control and update method for a display module according to claim 10, characterized in that, The step of establishing a read / write connection between the timing control board and the main control circuit of the whole machine through the first interface, and the main control circuit of the whole machine burning the display control update program into the timing control board, includes: The timing control circuit of the timing control board is configured with a first sub-interface; A read / write connection is established between the timing control circuit and the first interface through the first sub-interface; the main control circuit of the whole machine burns the timing control update program into the timing control circuit; The power management circuit of the timing control board is configured with a second sub-interface; A read / write connection is established between the power management circuit and the first interface through the second sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the power management circuit; Alternatively, the grayscale voltage generation control circuit of the timing control board may be configured with a third sub-interface; A read / write connection is established between the grayscale voltage generation control circuit and the first interface through the third sub-interface; the main control circuit of the whole machine burns the reference voltage debugging control program into the grayscale voltage generation control circuit.

12. The control and update method for a display module according to claim 10, characterized in that, Also includes: The backlight power conversion board is equipped with a second interface; A read / write connection is established between the power conversion board and the main control circuit of the whole machine through the second interface; the main control circuit of the whole machine burns the local dimming control update program into the microcontroller circuit of the power conversion board.

13. A display device, comprising a main control circuit, characterized in that, It also includes the display module as described in any one of claims 1-9. The display module is equipped with a first interface; or, the display module is equipped with a first interface and a second interface. The first interface and the second interface are configured to establish a read-write connection between the display module and the main control circuit.

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