WO2024103820A1 - Led display device and control method therefor - Google Patents

Abstract

Provided are an LED display device and a control method therefor. An SoC (100) of the LED display device is connected in series to a plurality of control circuits (102), such that the SoC (100) sends image data as a whole to the plurality of control circuits (102) in sequence, and each control circuit (102) can determine, according to the entire image data, a drive signal of at least one drive circuit (103) connected thereto, such that the image data that can be processed by the control circuits (102) is enriched, and each control circuit (102) can obtain the drive signal more effectively according to the image data, thereby reducing the split feeling of content displayed between display areas controlled by different control circuits (102), and improving the display effect and user experience of the LED display device.

Description

LED display device and control method thereof

CROSS-REFERENCE TO RELATED APPLICATIONS

This disclosure claims priority to the Chinese patent applications filed with the China Patent Office on November 16, 2022, with application number 202211434810.9, and the Chinese patent applications filed with the China Patent Office on November 16, 2022, with application number 202211434829.3, the entire contents of which are incorporated by reference into this disclosure.

Technical Field

The present disclosure relates to the technical field of light-emitting diodes (LEDs), and in particular to an LED display device and a control method thereof.

Background technique

With the continuous development of display technology, LED display devices using technologies such as sub-millimeter light-emitting diodes (MiniLED) and micro-light-emitting diodes (MicroLED) have higher resolutions and larger display sizes. However, due to the limitations of production process conditions, LED display devices are formed by splicing different light panels to form the entire LED display screen, and multiple drive circuits are set in each light panel. The control circuit of the light panel is used to provide a drive signal to each drive circuit, so that each drive circuit drives the LED display components in a display area on the light panel to display according to the drive signal.

In the image display process of current LED display devices, each control circuit can only receive a part of the entire image data, which makes the control circuit lose the basis for adjusting the image data. This may cause a sense of disconnection between the content displayed in the display areas controlled by different control circuits, affecting the display effect of the LED display device and the user experience.

Summary of the invention

The present disclosure provides a light emitting diode (LED) display device, comprising:

An LED display screen, wherein the LED display screen comprises a plurality of display areas distributed in rows and columns, and each display area comprises a plurality of LED display components distributed in rows and columns;

A plurality of driving circuits, wherein the plurality of driving circuits are used to respectively drive the LED display components in the plurality of display areas;

A plurality of control circuits, each of the control circuits being used to control at least one drive circuit among the plurality of drive circuits;

A system-on-chip (SOC) is provided, wherein the SOC is serially connected to the plurality of control circuits in sequence; the SOC is used to send image data of an image to be displayed on the LED display screen to a first control circuit among the plurality of control circuits, and the plurality of control circuits receive the image data in sequence according to a serial connection order and send the image data to a next connected control circuit; after receiving the image data, any control circuit controls at least one connected drive circuit to drive the LED display component to perform a display operation, so as to The image to be displayed is displayed on the LED display screen.

The present disclosure also provides a control method for an LED display device, the control method comprising:

The SOC acquires image data of an image to be displayed on the LED display screen;

The SOC sends the image data to a first control circuit among the plurality of control circuits;

The remaining control circuits of the plurality of control circuits except the first control circuit sequentially receive the image data sent by the previous control circuit in the serial connection order, and send the image data to the next control circuit connected;

After receiving the image data, each of the plurality of control circuits further generates a drive signal for at least one drive circuit connected to the control circuit according to information corresponding to at least one drive circuit connected to the control circuit in the image data, and sends the drive signal to the at least one drive circuit;

The at least one driving circuit connected to each control circuit receives a driving signal sent by the control circuit respectively, and drives the LED display component in the connected display area to display according to the driving signal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an LED display device according to some embodiments;

FIG2 is a schematic diagram of the connection relationship of an LED display device according to some embodiments;

FIG3 is a schematic diagram of a connection relationship of an LED display device according to some embodiments;

FIG4 is a schematic diagram of a control circuit structure according to some embodiments;

FIG5 is a schematic diagram of a connection method between a SOC and a control circuit in an LED display device according to some embodiments;

FIG6 is a schematic diagram of a display area and a driving circuit on an LED display screen according to some embodiments;

FIG. 7 is another schematic diagram of a display area and a driving circuit on an LED display screen according to some embodiments;

FIG8 is a schematic diagram showing the connection between a control circuit and a driving circuit in an LED display device according to some embodiments;

FIG9 is a connection diagram of a driving circuit in an LED display device according to some embodiments;

FIG10 is a schematic diagram of the structure of an LED display screen according to some embodiments;

FIG. 11 is a schematic diagram of a control circuit and a driving circuit in an LED display device according to some embodiments.

Detailed ways

FIG1 is a schematic diagram of the structure of an LED display device. The LED display device 10 shown in FIG1 can be an electronic device with a display function such as a television or an interactive tablet. The LED display device 10 includes: a system on chip (SOC) 100, an LED display screen 101, a control circuit 102, and a plurality of drive circuits 103.

The LED display screen 101 includes MiniLEDs distributed in rows and columns. Alternatively, the LED display screen 101 includes MicroLEDs distributed in rows and columns. By applying technologies such as MiniLED and MicroLED, LED The display screen 101 has a higher resolution and a larger display size. However, for some LED display screens 101 that require 4K resolution, it is usually necessary to have the ability to display 8 million pixels or more. Due to the limitations of production process conditions, the LED display screen 101 needs to be divided into different display areas and displayed by segmenting the image.

The LED display screen 101 shown in FIG1 includes a plurality of boxes 1011 arranged in rows and columns, specifically 8 rows and 8 columns with a total of 64 boxes 1011. Each box 1011 includes a plurality of light boards 10111 arranged in rows and columns, specifically 2 rows and 4 columns with a total of 8 light boards 10111. Each light board includes 12 display areas. Each display area includes LED display components arranged in rows and columns.

In some embodiments, the number of rows of LED display components in the display area in the same row is the same; the number of columns of LED display components in the display area in the same column is the same. For example, each display area in the first row includes 22 rows of LED display components, each display area in the second row includes 23 rows of LED display components, etc. For another example, each display area in the first column includes 30 columns of LED display components, each display area in the second column includes 30 columns of LED display components, etc.

In some embodiments, the LED display component may be MiniLED or MicroLED, etc.

The LED display device 10 shown in FIG1 includes N driving circuits 103 , which are denoted as driving circuit 1031 , driving circuit 1032 . . . driving circuit 103N. Each driving circuit 103 is used to drive an LED display component in a display area on the LED display screen 101 .

The LED display device 10 shown in FIG1 includes a plurality of control circuits 102, which are denoted as control circuit 1021, control circuit 1022, etc. Each control circuit 102 is connected to all at least one driving circuit 103 on a light board and is used to control the connected at least one driving circuit 103. For example, the control circuit 1021 is used to send a driving signal to the driving circuits 1031, driving circuits 1032, etc. of the corresponding display areas according to the display areas distributed in rows and columns on the LED display screen 101, so that each driving circuit 1031, driving circuit 1032, etc. drives the LED display components in a display area to display corresponding colors. When all display areas display corresponding colors respectively, the display of a light board 10111 can be realized. When all light boards 10111 complete the display, the display of a frame of image by the entire LED display screen 101 can be realized.

The LED display device 10 shown in FIG1 includes a SOC 100. The SOC 100 can be used to obtain image data of an image to be displayed on the entire LED display screen 101, and send the image data corresponding to multiple control circuits 102 to multiple control circuits 102 respectively, so that each control circuit 102 sends a driving signal to the connected driving circuit according to the image data, and then each driving circuit drives the LED display components in a display area to display.

FIG2 is a schematic diagram of the connection relationship of a currently common LED display device. In the LED display device shown in FIG2, taking the LED display screen 101 having a total of 64 lamp boards 10111 arranged in 8 rows and 8 columns as an example, the LED display device includes 64 control circuits, which are recorded as control circuit 102-1, control circuit 102-2...control circuit 102-64. The 64 control circuits 102 can be used to control the drive circuits 103 on the 64 lamp boards 10111 respectively. Each control circuit 102 is connected to SOC100 respectively. Each lamp board 10111 is provided with N display areas, and N drive circuits 103 are correspondingly provided for the N display areas on each lamp board. Taking the N display areas controlled by the control circuit 102-1 as an example, they are recorded as display area 1-1, display area 1-2...display area 1-N. Then the drive circuits 103-11, 103-2, 103-3 connected to the control circuit 102-1 are connected to the drive circuits 103-1 ... The driving circuits 103 - 12 . . . 103 - 1N are used to control the LED display components in the display area 1 - 1, the display area 1 - 2 . . . 1 -N, respectively.

In the LED display device shown in FIG. 2 , after the SOC 100 determines the image data of the image to be displayed, the image data is first divided into 64 different parts according to the display area corresponding to each control circuit 102. Subsequently, the SOC 100 sends the image data of a divided part to each control circuit 102. Each control circuit 102 sends a driving signal to the N driving circuits 103 connected thereto according to the received partial image data, so that each driving circuit 103 drives the LED display component in a display area according to the received driving signal. It can be seen that in the above process, since the SOC 100 divides the image data, each control circuit 102 can only receive a part of the entire image data, and thus can only display the part of the image data. For each control circuit 102, the operation performed is only passive reception, and all the processing of the received data depends on the SOC 100, so that the control circuit 102 loses the basis for adjusting the image data, which may cause a sense of separation between the contents displayed between the display areas controlled by different control circuits 102, affecting the display effect of the LED display device and the user experience.

Based on this, the embodiment of the present disclosure provides an LED display device and a control method thereof. By connecting the SOC 100 in the LED display device 10 in series with multiple control circuits 102, the SOC 100 does not need to split the image data, but sends the image data as a whole to multiple control circuits 102 in sequence. Each control circuit 102 can determine the driving signal of at least one driving circuit 103 connected to it according to the entire image data, thereby enriching the image data that can be processed by the control circuit 102, enabling each control circuit 102 to obtain a driving signal based on the image data more effectively, reducing the sense of separation between the contents displayed in the display areas controlled by different control circuits 102, thereby improving the display effect and user experience of the LED display device.

FIG3 is a schematic diagram of the connection relationship of an LED display device according to some embodiments. In the LED display device shown in FIG3, the LED display screen 101 is also taken as an example, which has a total of 64 lamp boards 10111 arranged in 8 rows and 8 columns. Then the LED display device includes 64 control circuits 102, which are recorded as control circuit 102-1, control circuit 102-2...control circuit 102-64. The 64 control circuits 102 can be used to control the drive circuits 103 on the 64 lamp boards 10111 respectively. Each lamp board 10111 is provided with N display areas distributed in rows and columns, and the N display areas on each lamp board are correspondingly provided with N drive circuits 103. Taking the N display areas controlled by the control circuit 102-1 as an example, they are recorded as display area 1-1, display area 1-2...display area 1-N. The driving circuits 103-11, 103-12, ..., 103-1N connected to the control circuit 102-1 are respectively used to drive the LED display components in the display area 1-1, the display area 1-2, ..., the display area 1-N to perform display.

Specifically, in the embodiment shown in FIG3 , the SOC of the LED display device 10 is serially connected to a plurality of control circuits 102. For example, among the 64 control circuits, the control circuits 102-1, 102-2, ..., 102-64 are serially connected in sequence. The SOC 100 is connected to the first control circuit 102-1.

In some embodiments, multiple control circuits 102 are connected in sequence through Vbyone interfaces. The first control circuit 102-1 of SOC100 is also connected through Vbyone interface. Then, data can be transmitted between SOC100 and the first control circuit 102-1 through Vbyone interface, and data can also be transmitted between each control circuit 102 and the control circuit 102 connected to it through Vbyone interface. Data includes received data and sent data, etc.

In some embodiments, SOC 100 can be used to obtain image data to be displayed by the entire LED display screen 101. The image data includes display information of all LED display components on the LED display screen 101. The display information includes brightness and color, etc. Subsequently, SOC 100 does not segment the image data, but sends the image data to the first control circuit 102-1.

For the first control circuit 102-1, after receiving the image data, it can process the image data, and after completing the processing, send the image data to the next control circuit 102-2 connected in series. Similarly, each control circuit 102 can receive the image data sent by the previous control circuit 102 connected in series, and after processing the image data, send the image data to the next control circuit 102 connected in series, until the image data is sent to the last control circuit 102-64. After processing the image data, the last control circuit 102-64 does not continue to send the control circuit 102.

In some embodiments, for each control circuit 102 among multiple control circuits 102, processing of image data includes: generating a drive signal for at least one drive circuit 103 connected to the control circuit 102 based on information corresponding to at least one drive circuit 103 connected to the control circuit 102 in the image data, and sending corresponding drive signals to at least one drive circuit 103 respectively.

In some embodiments, the image processing performed by the control circuit 102 also includes: image super-resolution reconstruction (SR), noise reduction (NR), or picture quality (PQ). Exemplarily, after receiving the image data, the control circuit 102 can perform row and column analysis and image quality processing on the image data, as well as enhancement or independent operation model loading. After the processing is completed, the data is encoded and modulated using the low-voltage differential signaling (LVDS) protocol, and finally the drive signal of each drive circuit 103 is obtained.

For each driving circuit 103, after receiving the driving signal, all LED display components in the connected display area can be driven to display according to the driving signal. For example, the driving signal may include a data driving signal and a scanning driving signal, and the driving circuit 103 may scan the LED display components of each row according to the scanning driving signal, and control the LED display components in each row to display the corresponding color column by column according to the data driving signal. The embodiment of the present disclosure does not limit the specific implementation method of the driving circuit 103 driving the LED display components in the display area.

In some embodiments, SOC 100 can obtain image data from an external interface, including a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB), or a network port.

In some embodiments, after the SOC 100 generates image data, the image data sent to the first control circuit 102-1 includes: display information of each LED display component on the LED display screen 101, global control information shared by multiple control circuits 102, and local control information of each control circuit in the multiple control circuits 102.

In some embodiments, since the SOC 100 and the control circuit 102 are connected via a Vbyone interface, when transmitting image data, the image data can be processed via a Vbyone encoding method, and instructions such as global control information and local control information can be transmitted via a preset bit in the Vbyone encoding. For example, the preset bit can specifically be a null bit in the Vbyone encoding.

In some embodiments, when the SOC 100 transmits image data, the image data may include According to the relative position information of the display area controlled by at least one driving circuit connected to each control circuit 102 on the LED display screen, the start bit and end bit of the display area corresponding to the control circuit 102 are added, and identification information is added. Then, for each control circuit 102, after receiving the image data, the display information of the LED display component in the display area controlled by at least one driving circuit connected to the control circuit can be obtained from the image data according to the start bit and end bit of the corresponding display area. The control circuit may not obtain the display information of the LED display components in other display areas in the image data.

In some embodiments, when the SOC 100 transmits image data, global control information may be added to a preset position in the image data, and each control circuit 102 may obtain the global control information of the current image data from the preset position. The global control information is the setting made by the SOC 100 for the entire image, such as improving the overall brightness. This embodiment can effectively send the global control information to all control circuits 102 through the image data sent by the SOC 100 to the serially connected control circuits 102, saving the interactive instructions between the SOC 100 and each control circuit 102, and improving the communication efficiency.

In some embodiments, when the SOC 100 transmits image data, local control information corresponding to each control circuit 102 may be added to the position corresponding to each control circuit 102 in the image data. Then, for each control circuit 102, local control information only for the control circuit may be received at the position corresponding to the control circuit after receiving the image data. This embodiment can realize the precise control of a single control circuit 102 among a plurality of serially connected control circuits 102 by the SOC 100 through the image data sent to the serially connected control circuit 102.

In some embodiments, each control circuit 102 can process the image data and can obtain the information in the complete image data, which also includes a brightness matrix diagram, a color matrix diagram, a motion vector diagram, etc. The image obtained by each control circuit 102 is a complete image, and the overall information acquisition of the image is complete, so that the control circuit 102 can spontaneously grasp the basic composition of the image from the perspective of the entire image, such as brightness composition, color composition, etc., and then more effectively generate a driving signal corresponding to the control circuit 102, so that the driving circuit can more accurately and effectively control the LED display components in the display area to display. Provide an accurate reference basis for global image quality correction and adjustment.

In some embodiments, when each control circuit 102 sends image data to the next control circuit 102 connected in series, the global control information and/or local control information in the image data can also be changed, so that each control circuit 102 can achieve overall unified control, avoiding display differences between different light boards caused by inconsistent control between control circuits 102, and further improving the display effect of the LED display screen 101.

In some embodiments, when the control circuit 102 transmits image data, it can also record the number of processing times and processing time information in the image data, specifically the number of times and the time the image data stays in the current processing circuit. Then, for each control circuit, before sending the image data to the next control circuit, it can also determine the time the current image data stays in the control circuit based on the number of processing times and processing time information added to the image data, and after the stay time, send the image data to the next control circuit connected in series. Therefore, each subsequent control circuit can stay uniformly based on this information to maintain consistency in image data transmission and display.

In some embodiments, the SOC 100 may determine the format of the image data in advance, that is, determine in advance the display information that each control circuit 102 in the image data needs to obtain, and The identification information corresponding to the control circuit 102 is added to the image data, so that each control circuit 102 can obtain the display information of the LED display component in the display area corresponding to the control circuit 102 according to the identification information.

Alternatively, in another embodiment, the SOC100 can determine the format of the image data by a simple counting or read-back scanning method through the serial connection relationship between the SOC100 and the multiple control circuits 102. For example, the SOC100 is also used to send image identification data to the first control circuit 102-1. Each control circuit 102 receives the image identification data sent by the previous control circuit 102 connected in series, and after processing, sends it to the next control circuit 102 connected in series. Each control circuit can add indication information of the display area corresponding to the control circuit 102 to the received image identification data. The indication information can be used to indicate the number and position of the LED display components driven by the current control circuit 102. Then, when the last control circuit 102-64 adds the indication information of the display area to the image identification data, the image identification data is returned to the SOC100 through the multiple control circuits 102 connected in series in sequence. So that the SOC100 can determine the display area and position of the multiple control circuits 102 connected according to the image identification information, thereby generating corresponding image data.

In some embodiments, SOC100 can also determine the dwell time required for all control circuits 102 by means of serial connection with multiple control circuits 102 and read-back scanning, so as to ensure the synchronization of all control circuits 102 when displaying the entire image data. Among them, SOC100 can determine the dwell time required for each control circuit after the system feedback of all serial control circuits, and re-complete the synchronization shaping of the image data to be sent in the synchronizer and beat jitter of SOC and then output it to the first control circuit among the multiple control circuits. The synchronizer and beat jitter use the multiple feedback of SOC to determine the dwell time required for all control circuits 102, so that each control circuit 102 is maintained within the optimal synchronization time when transmitting image data, so that the error of the entire image can be much smaller than that of the human eye, and this solution is controlled within the range of 1/120s. Among them, the acquisition method provided by the serial connection relationship between SOC100 and multiple control circuits 102 allows SOC100 to have a quantifiable basis for the residence time of each control circuit in the multiple control circuits 102 when processing image data, so that each control circuit 102 can use quantified data to delay the machine cycle at each level of synchronizer and jitter beat, thereby ensuring the synchronization of the image displayed by the control circuit driving the entire LED display screen according to the image data.

In some embodiments, when the last control circuit 102-64 among the multiple control circuits 10 receives the image data and generates a driving signal of at least one driving circuit based on the image data, it also sends the acquisition information to the SOC100 through the control circuits 102 connected in series in sequence, so that the SOC100 receives the acquisition information and then obtains the next frame of image data of the LED display screen 101.

FIG4 is a schematic diagram of the structure of an embodiment of a control circuit according to some embodiments. The control circuit 102 shown in FIG4 may include a first cache unit synchronous dynamic random-access memory (SDRAM) 1 and a second cache unit SDRAM2. The control circuit may use the first cache unit SDRAM1 and the second cache unit SDRAM2 in sequence to process the received image data. This processing may also be referred to as a ping-pong output display of image data. Exemplarily, for image data transmitted by an external interface, the switching control of SDRAM is performed in units of one frame of image. When SDRAM1 caches image data, the data image of SDRAM2 is displayed; conversely, when SDRAM2 caches image data, the data image of SDRAM1 is displayed. By repeating this process, the image switching speed between the previous frame image and the next frame image output by the control circuit 102 can be faster, and the display effect of image switching can be effectively improved.

Specifically, when the control circuit 102 receives the image data through the Vbyone interface, the image data is stored in a storage unit, which may be a double data rate synchronous dynamic random access memory (Double Data Rate, referred to as DDR) or the like. Then, according to the ping-pong output display mode shown in FIG4, one of the SDRAMs is selected to process the image data and output it through input selection and output selection. The image data is read into the DDR in order to be able to parse the image data, and to perform targeted synchronization delay, synchronization beat guarantee, and synchronization error jitter processing on the image data. The processed image data will be cached again according to the new synchronization attributes, and after caching, it will be encoded according to the new e-LVDS encoding method to obtain a drive signal. And it is output to the cache of the drive circuit at 350Mbps, and each drive circuit can drive the LED display component after receiving the drive signal.

In some embodiments, the disclosed embodiments utilize the redundant bits (null bits) of the Vbyone modulation process and implement the modulation of control commands (CMD for short) in the image data through secondary development based on Vbyone. This process is also utilized to transmit the forward transmitted image data, including the image data format and the basic block division of the image data, so that each level of control circuit can maintain consistency in the CMD and image data format, and can also perform differentiated information transmission and numbering between control circuits.

FIG5 is a schematic diagram of the connection between the SOC and the control circuit in the LED display device according to some embodiments. As shown in FIG5, the 64 lamp boards on the LED display screen 101 are arranged in 8 rows and 8 columns. Then the 64 control circuits are respectively used to control all the drive circuits on one lamp board. The 64 control circuits are respectively arranged on the non-display side of the multiple display areas corresponding to the 64 lamp boards, and the 64 control circuits are also arranged in a distribution manner of 8 rows and 8 columns. The control circuits of each column are connected in series, and the first row of control circuits and the last row of control circuits of each column are respectively connected to the control circuits on both sides of the column. Exemplarily, the last one of the control circuits in the rightmost column 8 is connected to the SOC100, the first one of the control circuits in the rightmost column 8 is connected to the first control circuit in column 7, the last control circuit in column 7 is connected to the last control circuit in column 6, and so on, presenting a reciprocating bending connection relationship.

The embodiment of the present disclosure also provides a control method for an LED display device, which can be applied to an LED display device as provided in any one of the present disclosure. The control method is executed by an SOC and multiple control circuits. The control method includes: the SOC obtains image data of an image to be displayed on an LED display screen; the SOC sends the image data to the first control circuit among multiple control circuits; each of the multiple control circuits receives the image data sent by the previous control circuit, and sends the image data to the next connected control circuit; after each of the multiple control circuits receives the image data, it also generates a drive signal for at least one drive circuit connected to the control circuit according to information corresponding to at least one drive circuit connected to the control circuit in the image data, and sends the drive signal to at least one drive circuit; at least one drive circuit connected to each control circuit receives the drive signal sent by the control circuit respectively, and drives the LED display component in the connected display area to display according to the drive signal.

In addition, due to process limitations, current LED display devices require different light panels to be spliced together to form the entire LED display screen, and multiple drive circuits are set in each light panel, each of which is used to drive the LED display components in a display area on the light panel to display. There are many driving circuits, and the control circuit of the LED display device is more complex when controlling these driving circuits to drive the LED components, as shown in FIG6 below.

FIG6 is a schematic diagram of a display area and a driving circuit on an LED display screen. Among them, four simplified display areas on the LED display screen 101 are used as examples, and the four display areas are recorded as display area ①, display area ②, display area ③ and display area ④ in a distribution manner of 2 rows and 2 columns. The four driving circuits in the LED display device can be used to drive the four display areas respectively, and the four driving circuits are also recorded as IC1, IC2, IC3 and IC4 in a distribution manner of 2 rows and 2 columns. The LED display components in each display area are used for display on the display side, and each driving circuit is arranged on the non-display side of the display area controlled by the driving circuit. For example, IC1 is used to drive the LED display components in display area ①, IC2 is used to drive the LED display components in display area ②, IC3 is used to drive the LED display components in display area ③, and IC4 is used to drive the LED display components in display area ④.

In the example shown in FIG6 , display area ① and display area ② respectively include 22 rows and 30 columns of LED display components arranged in rows and columns, and display area ③ and display area ④ respectively include 23 rows and 30 columns of LED display components arranged in rows and columns. Each IC can be used to sequentially drive the LED display components of the LED display screen to display row by row by row scanning.

However, when the LED display device 10 shown in FIG. 1 sets the display area and the driving circuit in the manner shown in FIG. 6, each display area needs to be provided with a driving circuit, and each driving circuit can only drive the LED display components in one display area. This results in a large number of driving circuits being provided in the LED display device 10, and the control circuit of the LED display device is more complex when controlling these driving circuits to drive the LED components.

Based on this, the embodiments of the present disclosure use time-sharing multiplexing of driving circuits so that, in addition to driving the LED display components within the set display area, multiple driving circuits can also jointly drive the LED display components in the display area where no driving circuits are set in a cross-display area manner, thereby reducing the number of driving circuits set in the LED display device and simplifying the complexity of the control circuit in controlling the driving circuit to drive the LED components.

FIG7 is a schematic diagram of a display area and a driving circuit on an LED display screen according to some embodiments. Here, the simplified four display areas on the aforementioned LED display screen are also taken as an example. The four display areas are recorded as display area ①, display area ②, display area ③ and display area ④ in a distribution manner of 2 rows and 2 columns. The two driving circuits in the LED display device can be used to drive the four display areas, wherein the two driving circuits are recorded as IC1 and IC2 respectively. IC1 is set on the non-display side of display area ①, and IC2 is set on the non-display side of display area ④.

In this embodiment, among the four display areas, display area ① and display area ④ where ICs are set on the non-display side are recorded as first-type display areas, and display area ② and display area ③ where ICs are not set on the non-display side are recorded as second-type display areas. It can be seen that the number of driving circuits 2 is less than the total number of display areas 4, and the number of driving circuits 2 is equal to the number of first-type display areas 2.

In some embodiments, the control circuit 102 in the LED display device 10 can be used to provide a driving signal to multiple driving circuits, so that the multiple driving circuits drive the LED display components in the display area to display according to the received driving signal. Specifically, the control circuit 102 can sequentially send a row driving signal of a row of LED components under the LED video to the multiple driving circuits 103, so that the multiple driving circuits 103 drive the LED display components of the LED display screen to display row by row according to the received row driving signal. Show.

In some embodiments, the row drive signal includes a row data drive signal and a row scan drive signal. The row data drive signal includes a data drive signal RGB for a row of LED display components, and the drive circuit can drive the LED display components to display corresponding colors according to the data drive signal. The row scan drive signal includes a scan drive signal SCAN for a row of LED display components, and the drive circuit can drive the LED display components to display according to the scan drive signal.

Taking the four display areas and two ICs shown in FIG7 as an example, for the IC1 and IC2 set on the non-display side of the first type display areas ① and ④ in the multiple driving circuits, when IC1 receives the data driving signal RGB1-22 of the LED display components in the 1st to 22nd rows in the display area ① and the scanning driving signal SCAN1-30 of the 1st to 30th columns in the display area ① sent by the control circuit 102, IC1 controls the LED display components in the display area ① to display according to the scanning driving signal SCAN1-30, and controls the LED display components in the display area ① to display the corresponding color according to the data driving signal RGB1-22.

Similarly, when IC2 receives the data drive signal RGB23-45 for the 23rd to 45th row in the display area ④ and the scan drive signal SCAN31-60 for the 31st to 60th column in the display area ④ sent by the control circuit 102, IC2 controls the LED display components in the scan display area ④ to display according to the scan drive signal SCAN31-60, and controls the LED display components in the display area ④ to display the corresponding color according to the data drive signal RGB23-45.

In some embodiments, for the second type display area, since no driving circuit is set on the non-display side of the second type display area, the LED display component in the second type display area can be jointly driven by two driving circuits in the same row and column as the second type display area.

Taking the second type display area ② shown in Figure 7 as an example, IC1 and IC2 can be used to jointly drive the LED display components in the display area ②, the first type display area ① set by IC1 and the second type display area ② are located in the same row, and the first type display area ④ set by IC2 and the second type display area ② are located in the same column.

When IC1 receives the data drive signal RGB1-22 of the LED display components in the 1st to 22nd rows in the display area ② sent by the control circuit 102, IC2 receives the scan drive signal SCAN31-60 of the LED display components in the 1st to 22nd rows in the display area ② sent by the control circuit 102. Then IC2 controls the LED display components in the display area ② to display according to the scan drive signal SCAN31-60, and at the same time, IC1 controls the LED display components in the display area ② to display the corresponding color according to the data drive signal RGB1-22.

Similarly, when IC1 receives the scan drive signal SCAN1-30 for the 1st to 30th columns of the LED display components in the display area ③ sent by the control circuit 102, IC2 receives the data drive signal RGB23-45 for the 23rd to 45th rows of the LED display components in the display area ③ sent by the control circuit 102. Then IC1 controls the LED display components in the display area ③ to display according to the scan drive signal SCAN1-30, and at the same time, IC2 controls the LED display components in the display area ③ to display the corresponding color according to the data drive signal RGB23-45.

Therefore, when the LED display device 10 shown in FIG. 1 sets the display area and the driving circuit in the manner shown in FIG. 7, it is not necessary to set a driving circuit for each display area. Instead, a corresponding driving circuit can be set in the first type display area, and the second type display area can be driven across the display area by the driving circuit corresponding to the first type display area. Therefore, according to some embodiments, the number of driving circuits set in the LED display device 10 is small, thereby reducing the LED The structural complexity and cost of the display device are reduced, and the complexity of the control circuit 102 in the LED display device 10 in controlling a small number of driving circuits is also reduced.

In some embodiments, FIG8 is a schematic diagram of the connection between the control circuit and the drive circuit in the LED display device according to some embodiments. As shown in FIG8, a plurality of drive circuits 1031-103N are connected in series in sequence. The control circuit 102 can be used to control all drive circuits 103, and determine the time-sharing mode of the drive circuit 103, and the timing of the time-sharing.

In some embodiments, when the control circuit 102 sequentially sends a row drive signal of a row of LED display components of an LED display screen to multiple drive circuits, the row drive signal can be sent to the first drive circuit 1031 among the multiple drive circuits. After receiving the row drive signal, each drive circuit processes the row drive signal and sends it to the next drive circuit connected in series. Finally, the last drive circuit 103N among the multiple drive circuits sends the drive data to the control circuit 102, completing the transmission of a sub-row drive signal.

In some embodiments, since a row of LED display drive signals provided by the control circuit 102 of the LED display device 10 to the drive circuit 103 may correspond to LED display components in different display areas, each drive circuit can, after receiving the row drive signal, determine to perform different processing on the row drive signal based on whether the row drive signal includes the drive signal of the LED display component in the display area corresponding to the drive circuit.

Take the first drive circuit among the multiple drive circuits as an example, for example, the first drive circuit connected to the control circuit is taken as the first drive circuit. When the row drive signal received by the first drive circuit includes the drive signal of the LED display component in the display area driven by the first drive circuit, the first drive circuit obtains the drive signal of the LED display component in the driven display area from the row drive signal, so that the first drive circuit can drive the LED display component in the display area controlled by it on the LED display screen to display according to the drive signal.

When the row driving signal received by the first driving circuit does not include the driving signal of the LED display component in the display area driven by the first driving circuit, the first driving circuit can send the received row driving signal to the next connected driving circuit.

In some embodiments, the control circuit 102 and the driving circuit 103 need to communicate with each other using a certain transmission protocol to meet the time-division multiplexing of the driving circuit 103 in the LED display device 10. For example, the row driving signal sent by the control circuit 102 to the multiple driving circuits 103 includes start information, end information, and synchronization jitter information.

The row drive signal includes a row data drive signal and a row scan drive signal. The row data drive signal includes a data drive signal, start information, end information, and synchronization jitter information of a row of LED display components of the LED display screen. The row scan drive signal includes a scan drive signal, start information, end information, and synchronization jitter information of a row of LED display components of the LED display screen.

For example, take the first driving circuit among multiple driving circuits as an example. When the first driving circuit receives the row data driving signal, it can obtain the data driving signal of the LED display component in the display area driven by the first driving circuit in the row data driving signal according to the start information and end information in the row data driving signal. In addition, the first driving circuit can also delay for a first time according to the synchronization jitter information in the row data driving signal, and then display the corresponding color according to the LED display component in the display area driven by the data driving signal.

When the first driving circuit receives the row scanning driving signal, it can obtain the scanning driving signal of the LED display component in the display area driven by the first driving circuit in the row scanning driving signal according to the start information and the end information in the row scanning driving signal. In addition, the first driving circuit can also delay for a second time according to the synchronization jitter information in the row scanning driving signal, and then display the LED display component in the display area driven by the scanning driving signal.

Therefore, in the LED display device 10 provided in this embodiment, on the basis of setting up fewer driving circuits 103, the time-division multiplexing and spatial multiplexing of the driving circuit 103 are realized by relying on the design of the data transmission protocol between the control circuit 102 and the driving circuit 103, and the consistency of the pace and differentiated control of the pictures displayed by the LED display device 10 are met through the innovative way of the data transmission protocol. It can not only support the simplification of the cost of the LED display device 10, but also support the improvement of the quality of the pictures displayed by the LED display device 10.

In some embodiments, Fig. 9 is a schematic diagram of the connection of the driving circuit in the LED display device according to some embodiments. As shown in Fig. 9, the driving circuit 1031 and the driving circuit 1032 in the LED display device 10 according to some embodiments are connected so that the driving circuits can communicate with each other and realize functions such as data transmission between the driving circuits.

In conjunction with the display screen in FIG. 7 , the following describes a process in which the control circuit sequentially sends a row drive signal of each row of LED display components of the LED display screen to the first drive circuit IC1 and the second drive circuit IC2, and the first drive circuit IC1 and the second drive circuit IC2 drive the LED display components of the LED display screen to display row by row according to the row drive signal. The first drive circuit IC1 and the second drive circuit IC2 are connected in series, and the control circuit 102 is connected to the first drive circuit of the two drive circuits, namely, the first drive circuit IC1.

When the LED display screen shown in FIG7 is displayed row by row, each row of LED display components of the LED display screen includes at least one LED display component in the first type display area and at least one LED display component in the second type display area. For example, the row drive signals for rows 1-22 of the LED display screen include the drive signals of the LED display components in the first type display area ① and the drive signals of the LED display components in the second type display area ②. The row drive signals for rows 23-45 of the LED display screen include the drive signals of the LED display components in the second type display area ③ and the drive signals of the LED display components in the first type display area ④.

Taking the row drive signal of the LED display components in the first row of the LED display screen as an example, it can be understood that the row drive signal includes the drive signals of the 60 columns of LED display components in the first row, the first 30 columns of LED display components are located in the first type of display area ①, and the last 30 columns of LED display components are located in the second type of display area ②.

The control circuit 102 sends a row data driving signal and a row scanning driving signal of the first row of LED display components to the first driving circuit IC1, and identifies the start information and the end information in the row data signal and the row scanning driving signal.

After the first drive circuit IC1 receives the row data drive signal and the row scan drive signal, the first drive circuit IC1 obtains the data drive signal RGB1-① of the LED display components in the first row and columns 1-30 in the first type display area ① in the row data drive signal according to the starting position and the ending position corresponding to the first drive circuit IC1 in the row data drive signal. The first drive circuit IC1 also obtains the first type display in the row scan drive signal according to the starting position and the ending position corresponding to the first drive circuit IC1 in the row scan drive signal. The scanning drive signal SCAN1-30-① of the LED display components in the 1st row and 1st to 30th columns in area ①.

The first driving circuit IC1 can delay the data driving RGB1-① signal according to the synchronization jitter value in the row data driving signal, and drive the LED display components of 1-30 columns in the first type display area ① to display the corresponding color according to the delayed data driving signal RGB1-①. At the same time, the first driving circuit IC1 also delays the scanning driving signal SCAN1-30-① according to the synchronization jitter value in the row scanning driving signal, and drives the LED display components of 1-30 columns in the first type display area ① to display according to the delayed scanning driving signal SCAN1-30-①. After the delay, the scanning driving signal RGB1-① and the data driving signal SCAN1-30-① provided by the first driving circuit IC1 to the LED display components of 1-30 columns in the first type display area ① can be synchronized.

Subsequently, the first driving circuit IC1 also obtains the data driving signal RGB1-② of the LED display components of columns 31-60 in the second type display area ② in the row data driving signal according to the starting position and the ending position corresponding to the first driving circuit IC1 in the row data driving signal, and sends the row scanning driving signal to the second driving circuit IC2 according to the starting position and the ending position corresponding to the second driving circuit IC2 in the row scanning driving signal.

After the second driving circuit IC2 receives the row scanning driving signal, it can obtain the data driving signal SCAN31-60-② of the LED display components in columns 31-60 within the second type display area ② in the row scanning driving signal according to the starting position and ending position corresponding to the second driving circuit IC2 in the row scanning driving signal.

The first driving circuit IC1 can delay the data driving signal RGB1-② according to the synchronization jitter value in the row data driving signal, and drive the LED display components of 31-60 columns in the second type display area ② to display the corresponding color according to the delayed data driving signal RGB1-②. At the same time, the second driving circuit IC2 delays the scanning driving signal according to the synchronization jitter value in the row scanning driving signal SCAN31-60-②, and drives the LED display components of 31-60 columns in the second type display area ② to display according to the delayed scanning driving signal SCAN31-60-②. After the delay, the data driving signal RGB1-② provided by the first driving circuit IC1 to the LED display components of 31-60 columns in the second type display area ② can be synchronized with the scanning driving signal SCAN31-60-② provided by the second driving circuit IC2 to the LED display components of 31-60 columns in the second type display area ②.

Similarly, taking the row drive signal of the LED display component in the 23rd row of the LED display screen as an example, it can be understood that the row drive signal includes the drive signals of the 60 columns of LED display components in the 23rd row, the first 30 columns of LED display components are located in the second type display area ③, and the last 30 columns of LED display components are located in the first type display area ④.

The control circuit 102 sends the row data drive signal and the row scan drive signal of the 23rd row of LED display components to the first drive circuit IC1, and identifies the start information and the end information in the row data signal and the row scan drive signal.

After the first drive circuit IC1 receives the row data drive signal and the row scan drive signal, it obtains the data scan drive signal RGB1SCAN1-30-③22-① of the LED display components in the first and second type display areas ①③ in the row data scan drive signal according to the starting position and the ending position corresponding to the first drive circuit IC1 in the row data scan drive signal. The first drive circuit IC1 also obtains the data scan drive signal RGB1SCAN1-30-③22-① of the LED display components in the first and second type display areas ①③ in the row data scan drive signal according to the starting position and the ending position corresponding to the first and second drive circuits IC1IC2 in the row scan data drive signal. The data drive signal SCAN1-30 of the LED display components in the 1st to 30th columns in the first type display area ① in the row scan signal is taken to send a row data drive signal to the second drive circuit IC2.

After the second driving circuit IC2 receives the row data driving signal, it can obtain the data driving signal RGB23-③ of the LED display components in columns 1-30 within the second type display area ③ in the row data signal according to the starting position and ending position corresponding to the second driving circuit IC2 in the row data driving signal.

The second driving circuit IC2 can delay the data driving signal RGB23-③ according to the synchronization jitter value in the row data driving signal, and drive the LED display components of 1-30 columns in the second type display area ③ to display the corresponding color according to the delayed data driving signal RGB23-③. At the same time, the first driving circuit IC1 delays the scanning driving signal SCAN1-30-③ according to the synchronization jitter value in the row scanning driving signal, and drives the LED display components of 1-30 columns in the second type display area ③ to display according to the delayed scanning driving signal SCAN1-30-③. After the delay, the scanning driving signal SCAN1-30-③ provided by the first driving circuit IC1 to the LED display components of 1-30 columns in the second type display area ③ can be synchronized with the data driving signal RGB23-③ provided by the first driving circuit IC1 to the LED display components of 1-30 columns in the second type display area ③.

Subsequently, the first driving circuit IC1 also sends a row data driving signal to the second driving circuit IC2 according to the starting position and the ending position of the row data driving signal corresponding to the second driving circuit IC2.

The second drive circuit IC2 obtains the data drive signal RGB23-④ of the LED display component in the 23rd row and 31st-60th column in the first type display area ④ in the row data drive signal according to the starting position and ending position corresponding to the second drive circuit IC2 in the row data drive signal. The second drive circuit IC2 also obtains the scan drive signal SCAN31-60-④ of the LED display component in the 23rd row and 31st-60th column in the first type display area ④ in the row scan drive signal according to the starting position and ending position corresponding to the second drive circuit IC2 in the row scan drive signal.

The second driving circuit IC2 can delay the data driving RGB23-④ signal according to the synchronization jitter value in the row data driving signal, and drive the LED display components of 31-60 columns in the first type display area ④ to display the corresponding color according to the delayed data driving signal RGB23-④. At the same time, the second driving circuit IC2 also delays the scanning driving signal SCAN31-60-④ according to the synchronization jitter value in the row scanning driving signal, and drives the LED display components of 31-60 columns in the first type display area ④ to display according to the delayed scanning driving signal SCAN31-60-④. After the delay, the scanning driving signal RGB23-④ and the data driving signal SCAN31-60-④ provided by the second driving circuit IC2 to the LED display components of 31-60 columns in the first type display area ④ can be synchronized.

In some embodiments, taking the LED display screen 101 shown in FIG. 7 as an example, the control circuit sends the row drive signal of each row of the LED display component of the LED display screen to the first drive circuit IC1 and the second drive circuit IC2 in sequence. The data format of the data drive signal of the 1st to 22nd rows of the LED display screen is a double 1 to 22 data width, the data of the first part 1 to 22a is the data drive signal of the first 1 to 30 columns of the LED display component, and the data of the second part 1 to 22b is the data drive signal of the last 31 to 60 columns of the LED display component. As shown in Table 1 below:

Table 1

As for the scan drive signals SCAN1-30 and SCAN31-60 of the 1st to 22nd rows of the LED display, since the switching of the scan drive signal SCAN spans two chips, the design of SCAN at this time The formula must be guaranteed not only from the protocol, but also from the synchronization mechanism of the chip. Therefore, in some embodiments, the control circuit can be displayed by the basic principle of the driving circuit. After the driving circuit drives a row of LED display components to display in sequence according to the received row of driving data, it continues to receive the next row of driving data and drives the next row of LED display components from the first column again. That is, the driving circuit scans the first row of LED display components according to the row driving data and then rescans the second row. Each LED data transmission is transmitted according to each row. The scanning is performed according to the scanning drive signal SCAN to determine which position of the LED display component is to be displayed. In this way, the scanning has the opportunity to achieve multiplexing. Therefore, the time for IC1 and IC2 to drive the first 1-30 columns and the last 31-60 columns of LED display components can be delayed to a certain time range through the synchronous jitter information in the driving signal, thereby reducing the flicker between different display areas driven by IC1 and IC2 in the picture.

In some embodiments, the synchronization jitter information can be used to control the timing of switching (shift) between ICs, so the synchronization jitter information can be carried in the command (Command, abbreviated as: CMD) bit of the row drive signal for transmission. Ensure that the switching between IC1 and IC2 is synchronized for all ICs, and ensure the accurate switching of IC1 and IC2 when driving a row of LED display components in a time-sharing manner. Therefore, the time period of a row drive signal and the transmission of CMD in the row drive signal are used to communicate and determine the best synchronization switching time in the picture, and the switching frequency division of each front-end link is fine-tuned through the return channel. Therefore, the data format of the entire image transmission is finally shown in Table 2 below:

Table 2

The use of the row drive signal CMD is mainly to indicate the start of data, the start of CMD, the synchronization jitter and the transmission control time of CMD. For example, when the frequency fluctuates, the variable refresh rate (VRR), 24HZ, 30HZ, 50HZ or 60HZ fluctuates, the frequency switching needs to be performed at the necessary nodes. Before this, the frequency can be controlled by the frequency generator. For example, after the control circuit controls multiple drive circuits to display a frame of image, and then obtains a frame of image, the synchronization jitter value in the row drive signal of each row of LED display components can be determined according to the frequency of the received image, and the synchronization jitter value is added to the generated row drive signal. Therefore, when the frequency of the received image changes, the time jitter of the drive circuit is also adjusted accordingly, so that the frequency of the image display is consistent with the frequency of the received image, and the overall display effect of the LED display is improved. In terms of control, the cross-hardware synchronization mechanism implemented by CMD ensures the segmentation of the data channel, and the frequency offset synchronization method is used to coordinate the entire picture to achieve the return frequency synchronization.

In the embodiments of the present disclosure, the system is innovated in the protocol, the time effect of row and column scanning is used to realize high-speed data transmission, and the cross-chip multiplexing of rows and columns is realized in the cache or by reorganizing the data format. Thus, the chip is simplified. In the above embodiments, the LED display screen includes 4 display areas as an example.

FIG10 is a schematic diagram of the structure of another embodiment of an LED display screen according to some embodiments. FIG10 shows a 12-channel mode under an even-number drive implemented based on the principle of an embodiment of the present disclosure. The direction of the data arrow represents the data transmission channel, which is a high-speed channel. The control principle is the same, specifically, IC1, IC2, IC3... are connected in series in the order of the arrows in the figure. The control circuit sends the row drive data of the entire LED display to IC1 through the socket. IC1 reads the data drive signals RGB46-67, RGB68-90, scan drive signals SCAN1-30, SCAN31-60, etc. in the display area that needs to be controlled, and drives the LED display components in the display area to display. Then IC1 sends the row drive data to IC2, and so on.

For the single-number multiplexing design, the basic principle of synchronization is the same as the double-number multiplexing design. When grouping data, for the three ICs, the data can be grouped in the original way, which requires too much bandwidth and cache of the system. Therefore, increasing the cache is a solution, but in terms of system cost, the frequency of the system can be increased by IC time-sharing and regional multiplexing, and the control method corresponding to the three ICs can be set, as well as the data CMD method to cache three sets of data (IC1, IC2 and IC3 data) for each IC, so that IC1 caches the data of IC1 and IC2, IC2 caches the data of IC2 and IC3, and IC3 caches the data of IC3 and IC1. This common multiplexing method realizes the regional caching of data. At the same time, because of the existence of the return channel, the data can come to the corresponding IC channel with the corresponding data CMD bit as the node.

Exemplarily, FIG11 is a schematic diagram of a control circuit and a drive circuit in an LED display device according to some embodiments. As shown in FIG11 , nine simplified display areas on an LED display screen are taken as an example. The nine display areas are recorded as display area ①...display area ⑨ in a distribution manner of three rows and three columns. The three drive circuits in the LED display device can be used to drive the nine display areas, wherein the three drive circuits are recorded as IC1, IC2, and IC3, respectively. IC1 is arranged on the non-display side of display area ①, IC2 is arranged on the non-display side of display area ⑤, and IC3 is arranged on the non-display side of display area ⑨. Display area ①, display area ⑤, and display area ⑨ are first type display areas. The other display areas are second type display areas.

Then the control circuit can be used to send row drive signals to IC1, IC2 and IC3. IC1 drives the LED display components in display area ① to display according to the drive signals of the LED display components in display area ① in the row drive signals, IC2 drives the LED display components in display area ⑤ to display according to the drive signals of the LED display components in display area ⑤ in the row drive signals, and IC3 drives the LED display components in display area ⑨ to display according to the drive signals of the LED display components in display area ⑨ in the row drive signals.

Similarly, IC1 and IC2 jointly drive the LED display components in display area ② according to the driving signal, IC1 and IC3 jointly drive the LED display components in display area ③ according to the driving signal, IC1 and IC2 jointly drive the LED display components in display area ④ according to the driving signal, IC2 and IC3 jointly drive the LED display components in display area ⑥ according to the driving signal, IC1 and IC3 jointly drive the LED display components in display area ⑦ according to the driving signal, and IC2 and IC3 jointly drive the LED display components in display area ⑧ according to the driving signal.

Claims (24)

1. A light emitting diode (LED) display device, comprising:

   An LED display screen, wherein the LED display screen comprises a plurality of display areas distributed in rows and columns, and each display area comprises a plurality of LED display components distributed in rows and columns;

   A plurality of driving circuits, wherein the plurality of driving circuits are used to respectively drive the LED display components in the plurality of display areas;

   A plurality of control circuits, each of the control circuits being used to control at least one drive circuit among the plurality of drive circuits;

   A system-on-chip (SOC), wherein the SOC is serially connected to the multiple control circuits in sequence; the SOC is used to send image data of an image to be displayed on the LED display screen to a first control circuit among the multiple control circuits, and the multiple control circuits receive the image data in sequence according to a serial connection order and send it to a next connected control circuit; after receiving the image data, any control circuit controls at least one connected driving circuit to drive an LED display component to perform a display operation, so as to display the image to be displayed on the LED display screen.
2. According to the LED display device of claim 1, the multiple control circuits are connected in sequence through a Vbyone interface; and the SOC is connected to a first control circuit among the multiple control circuits through a Vbyone interface.
3. According to the LED display device according to claim 1 or 2, the LED display screen includes a plurality of boxes distributed in rows and columns, each of the boxes includes a plurality of light boards distributed in rows and columns, and each light board includes a plurality of display areas distributed in rows and columns.
4. According to the LED display device according to claim 1 or 2, the multiple control circuits are respectively arranged on the non-display side of the multiple display areas, the multiple control circuits are distributed in rows and columns, the control circuits of each column are connected in series, and the first row of control circuits and the last row of control circuits of each column are respectively connected to the control circuits on both sides of the column.
5. According to the LED display device of claim 1, the multiple display areas of the LED display screen include multiple first type display areas and multiple second type display areas;

   The number of the plurality of driving circuits is equal to the number of the plurality of first type display areas, and the plurality of driving circuits are arranged on the non-display side of the plurality of first type display areas;

   The multiple control circuits are further used to sequentially send row drive signals of a row of LED display components of the LED display screen to the multiple drive circuits, so that the multiple drive circuits drive the LED display components of the LED display screen to display row by row according to the row drive signals;

   Among the plurality of driving circuits, the driving circuit disposed on the non-display side of the first type display area is used to drive the LED display component in the first type display area to display according to the row driving signal;

   The driving circuits in the same row and the same column of the plurality of driving circuits are arranged in the second type display area, and are used to drive the LED display components in the second type display area to display according to the row driving signal.
6. According to the LED display device of claim 5, the plurality of control circuits are further configured to send the row drive signal to a first drive circuit among the plurality of drive circuits;

   Each of the plurality of driving circuits is further configured to receive the row driving signal and send the row driving signal to the next driving circuit connected in series.
7. According to the LED display device according to claim 5 or 6, the LED display screen includes a plurality of boxes distributed in rows and columns, each of the boxes includes a plurality of light boards distributed in rows and columns, and each light board includes a plurality of display areas distributed in rows and columns.
8. A control method for an LED display device, applied to the LED display device according to any one of claims 1 to 7, the control method comprising:

   The SOC acquires image data of an image to be displayed on the LED display screen;

   The SOC sends the image data to a first control circuit among the plurality of control circuits;

   The remaining control circuits of the plurality of control circuits except the first control circuit sequentially receive the image data sent by the previous control circuit in the serial connection order, and send the image data to the next control circuit connected;

   After receiving the image data, each of the plurality of control circuits further generates a drive signal for at least one drive circuit connected to the control circuit according to information corresponding to at least one drive circuit connected to the control circuit in the image data, and sends the drive signal to the at least one drive circuit;

   The at least one driving circuit connected to each control circuit receives a driving signal sent by the control circuit respectively, and drives the LED display component in the connected display area to display according to the driving signal.
9. According to the control method of claim 8, the image data includes: display information of each LED display component on the LED display screen, global control information common to the multiple control circuits, and local control information of each control circuit in the multiple control circuits.
10. According to the control method of claim 9, after each of the plurality of control circuits receives the image data, the method further comprises:

    According to the relative position information of the display area controlled by at least one connected driving circuit on the LED display screen, the display information of the LED display component in the display area controlled by at least one driving circuit connected to the control circuit is obtained from the image data.
11. According to the control method of claim 10, after each of the plurality of control circuits receives the image data, the method further comprises:

    After generating a driving signal of at least one driving circuit connected to the control circuit according to the image data, adding processing number information and processing time information to the image data;

    Before each of the plurality of control circuits sends the image data to the next control circuit connected thereto, the method further comprises:

    The retention time of the image data is determined according to the processing times information and the processing time information added to the image data, and the image data is sent to the next connected control circuit after the retention time.
12. The control method according to claim 11, further comprising:

    When the last control circuit among the plurality of control circuits generates a driving signal for the at least one driving circuit according to the image data, the plurality of control circuits connected in series sequentially send the acquisition information to the SOC, so that the SOC obtains the LED display after receiving the acquisition information. The next frame of image data of the display screen.
13. The control method according to claim 12, further comprising:

    The SOC sends image identification data to a first control circuit among the plurality of control circuits;

    Each of the plurality of control circuits adds indication information of a display area to the image identification data according to a display area driven by at least one driving circuit connected thereto;

    After the last control circuit among the plurality of control circuits adds the indication information of the display area to the image identification data, the image identification data is sent to the SOC in sequence through the plurality of control circuits connected in series.
14. The control method according to claim 8, further comprising:

    The multiple control circuits acquire data of the image to be displayed, and generate row drive signals for each row of LED display components of the LED display screen according to the data of the image to be displayed;

    The multiple control circuits sequentially send row drive signals of each row of LED display components of the LED display screen to the multiple drive circuits;

    The plurality of driving circuits drive the LED display components of the LED display screen to display row by row according to the row driving signals of the LED display components of each row of the LED display screen.
15. According to the control method of claim 14, a plurality of driving circuits drive the LED display components of the LED display screen to display row by row, comprising:

    For a first driving circuit among the plurality of driving circuits, when the row driving signal of the LED display screen includes the driving signal of the LED display component in the display area driven by the first driving circuit, the first driving circuit determines the driving signal of the LED display component in the display area driven by the first driving circuit from the row driving signal, and drives the LED display component of the LED display screen to display according to the driving signal;

    When the row driving signal does not include the driving signal of the LED display component in the display area driven by the first driving circuit, the first driving circuit sends the received row driving signal to the next connected driving circuit.
16. According to the control method of claim 15, the row driving signal comprises a row data driving signal and a row scanning driving signal;

    The row data driving signal includes a data driving signal, start information, end information and synchronization jitter information of a row of LED display components of the LED display screen; the data driving signal is used to drive the LED display components to display corresponding colors;

    The row scanning drive signal includes a scanning drive signal, start information, end information and synchronization jitter information of a row of LED display components of the LED display screen; the scanning drive signal is used to drive the LED display components to display.
17. According to the control method of claim 16, the first driving circuit determines the driving signal of the LED display component in the driven display area from the row driving signal, comprising:

    When the first driving circuit receives a row data driving signal, the first driving circuit obtains a data driving signal of an LED display component in a display area driven by the first driving circuit in the row data driving signal according to start information and end information in the row data driving signal;

    When the first driving circuit receives a row scanning driving signal, the first driving circuit obtains the row scanning driving signal according to the start information and the end information in the row scanning driving signal. The scanning drive signal of the LED display component in the display area driven by the first drive circuit.
18. According to the control method of claim 16, the first driving circuit drives the LED display components of the LED display screen to display row by row according to the driving signal, comprising:

    After the first driving circuit is delayed according to the synchronization jitter information, it drives the LED display components of the LED display screen to display line by line according to the driving signal.
19. According to the control method described in any one of claims 16-18, a row of LED display components of the LED display screen driven by the row drive signal includes at least one LED display component in a first type display area and at least one LED display component in a second type display area.
20. According to the control method of claim 19, the plurality of driving circuits receive the row driving signal, and drive the LED display components of the LED display screen to display row by row according to the row driving signal, comprising:

    A first driving circuit among the plurality of driving circuits receives the row data driving signal and the row scanning driving signal;

    The first driving circuit obtains a data driving signal of at least one LED display component in the first type display area in the row data driving signal according to a starting position and an ending position in the row data driving signal;

    The first driving circuit obtains a scanning driving signal of at least one LED display component in the first type display area in the row scanning driving signal according to a starting position and an ending position in the row scanning driving signal;

    The first driving circuit delays the data driving signal according to the synchronization jitter value in the row data driving signal, and drives at least one LED display component in the first type display area to display a corresponding color according to the delayed data driving signal;

    The first driving circuit delays the scanning driving signal according to the synchronization jitter value in the row scanning driving signal, and drives at least one LED display component in the first type display area to display according to the delayed scanning driving signal.
21. According to the control method of claim 19, the plurality of driving circuits receive the row driving signal, and drive the LED display components of the LED display screen to display row by row according to the row driving signal, comprising:

    A first driving circuit among the plurality of driving circuits receives the row data driving signal and the row scanning driving signal;

    The first driving circuit obtains a data driving signal of at least one LED display component in the second type display area in the row data driving signal according to a starting position and an ending position in the row data driving signal;

    The first driving circuit sends the row scanning driving signal to a second driving circuit among the plurality of driving circuits according to a starting position and an ending position in the row scanning driving signal;

    The second driving circuit obtains a scanning driving signal of at least one LED display component in the second type display area in the row scanning driving signal according to the starting position and the ending position in the row scanning driving signal;

    The first driving circuit delays the data driving signal according to the synchronization jitter value in the row data driving signal, and drives the first type display according to the delayed data driving signal. At least one LED display component in the display area displays a corresponding color;

    The second driving circuit delays the scanning driving signal according to the synchronization jitter value in the row scanning driving signal, and drives at least one LED display component in the second type display area to display according to the delayed scanning driving signal.
22. According to the control method of claim 19, the plurality of driving circuits receive the row driving signal, and drive the LED display components of the LED display screen to display row by row according to the row driving signal, comprising:

    A first driving circuit among the plurality of driving circuits receives the row data driving signal and the row scanning driving signal;

    The first driving circuit sends the row data driving signal to a second driving circuit among the plurality of driving circuits according to a starting position and an ending position in the row data driving signal;

    The first driving circuit obtains a data driving signal of at least one LED display component in the second type display area in the row scanning driving signal according to a starting position and an ending position in the row scanning driving signal;

    The second driving circuit obtains a scanning driving signal of at least one LED display component in the second type display area in the row data driving signal according to a starting position and an ending position in the row data driving signal;

    The first driving circuit delays the scanning driving signal according to the synchronization jitter value in the row scanning driving signal, and drives at least one LED display component in the first type display area to display according to the delayed scanning driving signal;

    The second driving circuit delays the scanning driving signal according to the synchronization jitter value in the row data driving signal, and drives at least one LED display component in the second type display area to display a corresponding color according to the delayed data driving signal.
23. According to the control method of claim 19, the plurality of driving circuits receive the row driving signal, and drive the LED display components of the LED display screen to display row by row according to the row driving signal, comprising:

    A first driving circuit among the plurality of driving circuits receives the row data driving signal and the row scanning driving signal;

    The first driving circuit sends the row data driving signal and the row scanning driving signal to a second driving circuit among the plurality of driving circuits according to the starting position and the ending position in the row data driving signal and the row scanning driving signal;

    The second driving circuit obtains a data driving signal of at least one LED display component in the first type display area in the row data driving signal according to a starting position and an ending position in the row data driving signal;

    The second driving circuit obtains a scanning driving signal of at least one LED display component in the first type display area in the row scanning driving signal according to a starting position and an ending position in the row scanning driving signal;

    The second driving circuit delays the data driving signal according to the synchronization jitter value in the row data driving signal, and drives at least one LED display component in the first type display area to display a corresponding color according to the delayed data driving signal;

    The second driving circuit delays the scanning driving signal according to the synchronization jitter value in the row scanning driving signal, and drives at least one LED display component in the first type display area to display according to the delayed scanning driving signal.
24. According to the control method described in any one of claims 15 to 18, generating a driving action signal for each row of LED display components of the LED display screen according to the data of the image to be displayed comprises:

    The control circuit determines the synchronization jitter value in the row drive signal of each row of LED display components of the LED display screen according to the frequency of acquiring the image to be displayed.