Driving module, driving method for display apparatus, and display apparatus

Abstract

A driving module (103), a driving method for a display apparatus (100), and a display apparatus (100), relating to the technical field of display. The driving module (103) comprises: a driving circuit board (1031), and driving chips (1032) arranged in N rows and M columns. The driving circuit board (1031) is configured to refresh backlight partitions (1011) in a unit of row at a frequency F1, the driving circuit board (1031) being configured to send backlight data corresponding to an nth row of the backlight partitions (1011) to M driving chips (1032) in an ([n / A]+1)th row simultaneously by means of M cascaded chains. A display panel (102) is configured to refresh pixels in a unit of row at a frequency F2, wherein F2=Y*F1. By configuring a refresh duration of refreshing one row of the backlight partitions (1011) by the driving circuit board (1031) to be the same as a refresh duration of a plurality of rows of pixels corresponding to said row of the backlight partitions (1011), a light-emitting substrate (101) and the display substrate (102) are synchronously refreshed in a row direction, thus improving the synchronization of refreshing the light-emitting substrate (101) and the display substrate (102).

Description

Driving module, driving method of display device, and display device

[0001] This application claims priority to Chinese patent application No. 202311042059.2 filed on August 16, 2023, entitled “Driving module, driving method of display device and display device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a driving module, a driving method for a display device, and a display device. Background Art

[0003] A display device generally includes a driver module, a light-emitting substrate, and a display panel. The driver module sends drive signals to the light-emitting substrate and the display panel, respectively, to drive the light-emitting substrate and the display panel to refresh and realize image display. The display panel is configured to refresh multiple rows of pixels row by row.

[0004] A driving module includes a driving circuit board electrically connected to a light-emitting substrate, and is used for receiving all backlight data signals and simultaneously refreshing multiple columns of backlight partitions on the light-emitting substrate.

[0005] However, the refresh synchronization between the light emitting substrate of the driving circuit board in the above driving module and the display panel is poor, resulting in poor display effect of the display device.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a driving module, a driving method for a display device, and a display device. The technical solution is as follows:

[0008] According to one aspect of the present application, a driving module is provided, the driving module being used for a display device, the display device comprising a light-emitting substrate and a display panel, the light-emitting substrate having a plurality of backlight partitions distributed in an array, the display panel comprising a plurality of pixels distributed in an array;

[0009] The driving module includes a driving circuit board and driving chips arranged in N rows and M columns. The driving chips in the same column are cascaded in sequence along the column direction to form a cascade chain. The M cascade chains are independent of each other.

[0010] The driver chips located in the same column correspond to the backlight partitions in the same column, and any one of the driver chips is configured to control the A backlight partitions arranged sequentially along the column direction, and different driver chips are used to control different backlight partitions;

[0011] A plurality of backlight sub-regions arranged along a row direction are configured to provide backlight to Y rows of pixels in the display panel;

[0012] The driving circuit board is configured to refresh the backlight partition in units of rows at a frequency F1, wherein the driving circuit board is configured to simultaneously send the first The M driver chips in the row send backlight data corresponding to the backlight partitions in the nth row;

[0013] The display panel is configured to refresh pixels in rows at a frequency of F2, where F2 = Y × F1;

[0014] A, Y, M, and N are all positive integers, and n is a positive integer not greater than (N×A). Indicates a floor operation.

[0015] Optionally, the driving module further includes a system circuit, and the driving circuit board is further configured to Before the M driver chips in the row send the backlight data corresponding to the backlight partitions in the nth row, they receive the brightness information corresponding to the backlight partitions in the nth row from the system circuit and process the brightness information to obtain the backlight data corresponding to the backlight partitions in the nth row;

[0016] The first duration is the time required for the driver circuit board to receive the brightness information corresponding to the n-th row of backlight partitions from the system circuit and to process the brightness information to obtain backlight data;

[0017] The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board;

[0018] The first duration is greater than the second duration;

[0019] The driving circuit board at a first time point The M driver chips in the row send backlight data corresponding to the backlight partition of the nth row, and the driver circuit board sends backlight data corresponding to the backlight partition of the nth row at a second time point. The M driver chips in a row send backlight data corresponding to the backlight partition in the (n+1)th row, and the difference between the second time point and the first time point is equal to the first duration.

[0020] Optionally, the driving module further includes a system circuit, and the driving circuit board is further configured to Before the M driver chips in the row send the backlight data corresponding to the backlight partitions in the nth row, they receive the brightness information corresponding to the backlight partitions in the nth row from the system circuit and process the brightness information to obtain the backlight data corresponding to the backlight partitions in the nth row;

[0021] The first duration is the time required for the driver circuit board to receive the brightness information corresponding to the n-th row of backlight partitions from the system circuit and to process the brightness information to obtain backlight data;

[0022] The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board;

[0023] The second duration is greater than the first duration;

[0024] The driving circuit board receives brightness information corresponding to the backlight partition of the nth row at a third time point, and the driving circuit board receives brightness information corresponding to the backlight partition of the n+1th row at a fourth time point, and the difference between the fourth time point and the third time point is equal to the second time length.

[0025] Optionally, the driving module further includes a timing control chip, which is electrically connected to the display panel and configured to receive image information sent by the system circuit and process the image information into pixel data.

[0026] Optionally, the system circuit is further configured to acquire a source signal, process the source signal to obtain the image information and the brightness information, and then send the image information and the brightness information to the timing control circuit and the driving circuit board respectively.

[0027] Optionally, the driver circuit board is configured to send the backlight data corresponding to the nth row of backlight partitions in any cascade chain sequentially through the first-stage driver chip to the pth-stage driver chip in the cascade chain to the nth row of backlight partitions. Row driver chip;

[0028] The p and the n satisfy the following relationship: or,

[0029] According to another aspect of the present application, a method for driving a display device is provided, which is applied to a driving circuit board included in the driving module as described above, and the method includes:

[0030] The backlight partition is refreshed in units of rows at a frequency of F1, wherein the first row is refreshed simultaneously through M cascade chains. The M driver chips in a row send backlight data corresponding to the backlight partition of the nth row, F2=Y×F1, F2 is the frequency at which the display panel refreshes pixels in units of rows, A, Y, M, and N are all positive integers, and n is a positive integer not greater than (N×A). Indicates a floor operation.

[0031] Optionally, the driving module further includes a system circuit;

[0032] In the above method, the first Before the M driver chips in the row send the backlight data corresponding to the backlight partition in the nth row, the method further includes:

[0033] receiving brightness information corresponding to the n-th row of backlight partitions sent by the system circuit;

[0034] The brightness information is processed to obtain backlight data corresponding to the n-th row of backlight partitions.

[0035] Optionally, the first duration is the time required for the driver circuit board to receive the brightness information corresponding to the n-th row of backlight partitions from the system circuit and to process the brightness information to obtain backlight data;

[0036] The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board;

[0037] The second duration is greater than the first duration;

[0038] The M cascade chains are used to simultaneously send The M driver chips in the row send backlight data corresponding to the backlight partition in the nth row, including:

[0039] At the first point in time The M driver chips in the row send backlight data corresponding to the backlight partition of the nth row, and at the second time point send backlight data corresponding to the backlight partition of the nth row to the M driver chips in the row. The M driver chips in a row send backlight data corresponding to the backlight partition in the (n+1)th row, and the difference between the first time point and the second time point is equal to the first duration.

[0040] Optionally, the first duration is the time required for the driver circuit board to receive the brightness information corresponding to the n-th row of backlight partitions from the system circuit and to process the brightness information to obtain backlight data;

[0041] The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board;

[0042] The second duration is greater than the first duration;

[0043] The receiving, from the system circuit, brightness information corresponding to the n-th row of backlight partitions includes:

[0044] The brightness information corresponding to the nth row backlight partition is received at a third time point, and the brightness information corresponding to the n+1th row backlight partition is received at a fourth time point, wherein the difference between the third time point and the fourth time point is equal to the second duration.

[0045] According to another aspect of the present application, a display device is provided, including a light-emitting substrate, a display panel and a driving module, wherein the driving module is electrically connected to the light-emitting substrate and the display panel, and the driving module is the above-mentioned driving module.

[0046] According to another aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the above-described method for driving a display device.

[0047] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0048] A driving module is provided, comprising a driving circuit board and driving chips arranged in N rows and M columns. The driving module can be used in a display device comprising a light-emitting substrate and a display substrate. The driving circuit board is configured to refresh the backlight partitions in rows at a frequency F1, wherein the driving circuit board is configured to simultaneously refresh the first and second backlight partitions through M cascade chains. The M driver chips in a row send backlight data corresponding to the nth row of backlight partitions. The display panel is configured to refresh pixels on a row-by-row basis at a frequency of F2, where F2 = Y × F1. By configuring the driver circuit board to refresh a row of backlight partitions with the same refresh duration as the multiple rows of pixels corresponding to that row of backlight partitions, the light-emitting substrate and the display substrate are refreshed synchronously along the row direction, improving the synchronization of the refreshes of the light-emitting substrate and the display substrate. This can address the poor display quality of display devices in related technologies and improve the display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0050] FIG1 is a schematic structural diagram of a display device provided in an embodiment of the present application;

[0051] FIG2 is a schematic structural diagram of a driving module provided in an embodiment;

[0052] FIG3 is a schematic structural diagram of a driver chip, a light-emitting substrate, and a display panel provided in an embodiment of the present application;

[0053] FIG4 is a timing diagram of a driving module controlling a driving chip in a related art according to an embodiment of the present application;

[0054] FIG5A is a timing diagram of a driving module controlling a driving chip provided by an embodiment of the present application;

[0055] FIG5B is a timing diagram of another driving module controlling a driving chip provided by an embodiment of the present application;

[0056] FIG6A is a timing diagram of another driving module controlling a driving chip provided by an embodiment of the present application;

[0057] FIG6B is a timing diagram of another driving module controlling a driving chip provided by an embodiment of the present application;

[0058] FIG7 is a data output timing diagram of a system circuit provided in an embodiment of the present application;

[0059] FIG8A is a schematic diagram of a row sequence of a driver chip provided in an embodiment of the present application;

[0060] FIG8B is a schematic diagram of another row sequence of driver chips provided in an embodiment of the present application;

[0061] FIG9 is a flowchart of a method for driving a display device provided in an embodiment of the present application.

[0062] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0063] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0064] Please refer to Figures 1, 2, and 3. Figure 3 shows a schematic diagram of the corresponding relationship between the local light-emitting substrate 101 and the local display panel 102. The driving module 103 can be used in a display device 100. The display device 100 may include a light-emitting substrate 101 (English: Backlight; abbreviated: B) and a display panel 102 (English: Panel; abbreviated: P). The light-emitting substrate 101 may have a plurality of backlight sub-areas 1011 distributed in an array. Each backlight sub-area 1011 may have at least one light-emitting device. The light-emitting substrate 101 may serve as a backlight source to emit light to the display panel 102. The display panel 102 may include a plurality of pixels distributed in an array.

[0065] The driving module 103 may include a driving circuit board 1031 and driving chips 1032 arranged in N rows and M columns. The driving chips 1032 in the same column may be cascaded in sequence along the column direction to form a cascade chain, and the M cascade chains are independent of each other.

[0066] The driver chips 1032 located in the same column can correspond to the backlight sub-areas 1011 in the same column, and any driver chip 1032 can be configured to control A backlight sub-areas 1011 arranged sequentially along the column direction. Different driver chips 1032 can be used to control different backlight sub-areas 1011. In other words, any driver chip 1032 can correspond to A backlight sub-areas 1011 and be electrically connected to the light-emitting devices in the corresponding A backlight sub-areas 1011 to control the light-emitting state of the light-emitting devices in the corresponding A backlight sub-areas 1011. During the process of the driver chip 1032 controlling the light-emitting devices in the corresponding A backlight sub-areas 1011 to emit light, the driver circuit board 1031 can provide backlight data to the driver chip 1032, and the driver chip 1032 can control the light-emitting devices in the corresponding A backlight sub-areas 1011 to emit light based on the backlight data.

[0067] As shown in FIG3 , a plurality of backlight sub-areas 1011 arranged along a row direction may be configured to provide backlight to Y rows of pixels in the display panel 102. A row of backlight sub-areas 1011 may include a plurality of backlight sub-areas 1011, and a row of backlight sub-areas 1011 in the light-emitting substrate 101 may correspond to Y rows of pixels in the display panel 102 to provide backlight for the corresponding Y rows of pixels.

[0068] The driving circuit board 1031 is configured to refresh the backlight partition in units of rows at a frequency F1, wherein the driving circuit board 1031 is configured to simultaneously send the first The M driver chips 1032 in the row send backlight data corresponding to the n-th row backlight partition 1011. That is, the driver circuit board 1031 can send the backlight data corresponding to the n-th row backlight partition 1011 to the M driver chips 1032 in the same row at the same time. The M driver chips 1032 in the same row respectively belong to M independent cascade chains. In this way, the M driver chips 1032 in the same row can receive the backlight data corresponding to the n-th row backlight partition 1011 sent by the driver circuit board 1031 at the same time, which can reduce the data transmission time of the driver circuit board 1031 sending the backlight data corresponding to the n-th row backlight partition 1011 to the M driver chips 1032 in the same row. The driver circuit board 1031 can send the backlight data corresponding to the (N×A) rows of backlight partitions 1011 to the N rows of driver chips row by row according to multiple rows of backlight partitions.

[0069] The display panel 102 can be configured to refresh pixels in rows at a frequency of F2. It is understood that the reciprocal of the frequency F1 at which the driver circuit board 1031 refreshes the backlight partitions 1011 in rows is the driving time for the driver circuit board 1031 to drive the light-emitting devices in the nth row of backlight partitions to emit light through the driver chip 1032. The reciprocal of the frequency F2 at which the display panel 102 refreshes pixels in rows is the time it takes the display panel 102 to scan a row of pixels. Exemplarily, the driving time is T1 = 1 / F1, and the scanning time is T2 = 1 / F2.

[0070] Wherein, F2=Y×F1. A, Y, M and N are all positive integers, and n is a positive integer not greater than (N×A). Indicates a floor operation.

[0071] The brightness refresh time of a row of backlight partitions can be configured to be the same as the scan time of its corresponding Y rows of pixels. The scan time can also be called the refresh time of the Y rows of pixels, so that the brightness refresh time of a row of backlight partitions is the same as the refresh time of the Y rows of pixels. For example, T1 = T2 × Y, that is, 1 / F1 = 1 / F2 × Y, and F2 = Y × F1.

[0072] In this way, the driver circuit board 1031 can control the refresh time of a row of backlight subareas 1011 on the light-emitting substrate 101 through the driver chip 1032 to be the same as the refresh time of the corresponding Y row of pixels, and the refresh direction is also the same, so that the refresh frequency of the light-emitting substrate 101 and the display panel 102 are the same. The light-emitting substrate 101 and the display panel 102 can be refreshed synchronously along the row direction, which can improve the refresh synchronization of the light-emitting substrate 101 and the display substrate 102.

[0073] In summary, the embodiment of the present application provides a driver module including a driver circuit board and driver chips arranged in N rows and M columns. The driver module can be used in a display device including a light-emitting substrate and a display substrate. The driver circuit board is configured to refresh the backlight partitions in rows at a frequency F1, wherein the driver circuit board is configured to simultaneously send the first and second light zones to the display through M cascade chains. The M driver chips in a row send backlight data corresponding to the nth row of backlight partitions. The display panel is configured to refresh pixels on a row-by-row basis at a frequency of F2, where F2 = Y × F1. By configuring the driver circuit board to refresh a row of backlight partitions with the same refresh duration as the multiple rows of pixels corresponding to that row of backlight partitions, the light-emitting substrate and the display substrate are refreshed synchronously along the row direction, improving the synchronization of the refreshes of the light-emitting substrate and the display substrate. This can address the poor display quality of display devices in related technologies and improve the display quality of the display device.

[0074] It should be noted that since one driver chip 1032 can be configured to control A backlight sub-zones 1011 arranged sequentially along the column direction, that is, a row of driver chips 1032 can control A rows of backlight sub-zones 1011, and a row of backlight sub-zones 1011 can correspond to Y rows of pixels, then the A rows of backlight sub-zones 1011 controlled by a row of driver chips 1032 can correspond to A×Y rows of pixels. Therefore, when A is 1, a row of driver chips 1032 can correspond to a row of backlight sub-zones 1011. In this way, the driver circuit board 1031 can simultaneously send backlight data corresponding to the nth row of backlight sub-zones 1011 to the M driver chips 1032 in the nth row through M cascade chains, where n can be a positive integer less than or equal to N.

[0075] When A is greater than 1, a row of driver chips 1032 can correspond to multiple rows of backlight partitions 1011. In this way, the driver circuit board 1031 can simultaneously send the first and second backlight partitions 1011 to the first and second backlight partitions 1011 through M cascade chains. The M driver chips 1032 in the row transmit backlight data corresponding to the backlight subarea 1011 in the nth row, where n may be a positive integer less than or equal to (N×A). For example, if A is 4, the driver circuit board 1031 may transmit backlight data corresponding to the backlight subareas 1011 in rows 1 to 4 to the M driver chips 1032 in row 1 through M cascade chains.

[0076] Referring to Figure 1 , system circuit 1033 can transmit brightness information to driver circuit board 1031 via a single-master communication (Serial Peripheral Interface) interface. System circuit 1033 may include a system-on-chip (SOC), which can be a dedicated integrated circuit containing a complete system and embedded software. Driver circuit board 1031 may include a field programmable gate array (FPGA).

[0077] The meanings of the signals appearing in Figures 4, 5A, 5B, 6A and 6B are as follows: ispi-clk represents the clock signal used when the system circuit 1033 sends brightness information to the driver circuit board 1031; ispi-sdi represents the brightness information transmitted by the system circuit 1033 to the driver circuit board 1031; ispi-cs represents the enable signal for the system circuit 1033 to start sending brightness information corresponding to one frame of picture to the driver circuit board 1031; vsync represents the frame synchronization signal; Xw (X-wire) represents the backlight data output by the driver circuit board 1031 to the driver chip 1032; st , 2 nd , ..., (N × A) th They represent the brightness information or backlight data corresponding to the first row of backlight partitions, the second row of backlight partitions, ..., the N×Ath row of backlight partitions, respectively. In some embodiments, the falling edge of the vsync signal is synchronized with the falling edge of the ispi-cs signal. That is, when the system circuit 1033 begins sending brightness information corresponding to a frame of image to the driver circuit board 1031, the display panel 102 begins scanning pixels row by row.

[0078] For example, take M=64, N=9, A=4 as an example, that is, multiple driver chips 1032 can be arranged in 9 rows and 64 columns, X-w0 to X-w63 can refer to the direction of the driver circuit board 1031 to the first row. The driver chips 1032 in the 1st to 64th columns of the row simultaneously send backlight data, and multiple backlight partitions 1011 can be arranged in 36 rows and 64 columns. One driver chip 1032 can control four backlight partitions 1011 located in the same column.

[0079] In the embodiment provided by the present disclosure, the driving circuit board 1031 is configured to Before sending the backlight data corresponding to the n-th backlight partition 1011 , the M driver chips 1032 in the row receive the brightness information corresponding to the n-th backlight partition 1011 from the system circuit 1033 and process the brightness information to obtain the backlight data corresponding to the n-th backlight partition 1011 .

[0080] The first duration can be the time required for the driver circuit board 1031 to receive the brightness information corresponding to the n-th row backlight partition 1011 from the system circuit 1033 and process the brightness information to obtain backlight data. The time required for the M driving chips 1032 in a row to receive the backlight data corresponding to the backlight partitions 1011 in the n-th row from the driving circuit board 1031 .

[0081] Thus, the refresh process of the n-th row backlight partition 1011 can include the following two stages: In the first stage, the driver circuit board 1031 receives the brightness information corresponding to the n-th row backlight partition 1011 from the system circuit 1033 and processes the brightness information to obtain backlight data corresponding to the n-th row backlight partition 1011. This first stage can be referred to as the data input stage, wherein the time required for the driver circuit board 1031 to process the brightness information to obtain the backlight data can be ignored; In the second stage, the driver circuit board 1031 sends the backlight data corresponding to the n-th row backlight partition 1011 to the driver chip 1032. This second stage can be referred to as the data output stage. It can be understood that after receiving the backlight data corresponding to the n-th row backlight partition 1011, the driver chip 1032 can immediately control the light-emitting devices in the n-th row backlight partition 1011 to present a specific brightness.

[0082] The first stage corresponding to the backlight partition 1011 of the n+1th row (i.e., the stage in which the driving circuit board 1031 obtains the backlight data corresponding to the backlight partition 1011 of the n+1th row) can be performed simultaneously with the second stage corresponding to the backlight partition 1011 of the nth row (i.e., the stage in which the driving circuit board 1031 sends the backlight data corresponding to the backlight partition 1011 of the nth row to the driving chip 1032). In addition, the driving circuit board 1031 can immediately send the backlight data corresponding to the backlight partition 1011 of the nth row to the driving chip 1032 after obtaining the backlight data corresponding to the backlight partition 1011 of the nth row. The M driver chips 1032 in the row send backlight data to refresh the backlight partitions 1011 in the n-th row.

[0083] Table 1 is a configuration parameter table of a display device 100 provided in an embodiment of the present application, please refer to Table 1. In an exemplary embodiment, the display device 100 includes a light-emitting substrate 101 and a display panel 102. The light-emitting substrate 101 can serve as a backlight source to emit light to the display panel 102 included in the display device 100 where the light-emitting substrate 101 is located. Taking a 75-inch 8K display device 100 as an example, the display panel 102 may include 3840 (columns) × 2160 (rows) pixels. The light-emitting substrate 101 serving as a backlight source may include 2304 backlight partitions 1011, and the 2304 backlight partitions 1011 may be arranged in 64 columns and 36 rows. One driver chip 1032 can control four backlight partitions 1011 arranged in sequence along the column direction, that is, the driver module 103 may include 576 driver chips 1032, and the 576 driver chips 1032 may be arranged in 64 columns and 9 rows, with one row of backlight partitions corresponding to 60 pixel rows. In Table 1, “H” indicates the row direction and “V” indicates the column direction.

[0084] Table 1

[0085] For example, the number of bits b1 of brightness information corresponding to one backlight partition 1011 sent by the system circuit 1033 to the driver circuit board 1031 is 10 bits. One driver chip 1032 can control four backlight partitions 1011, and 2304 backlight partitions 1011 are arranged on the light-emitting substrate in 36 rows and 64 columns. It can be understood that the display time of one frame is the reciprocal of the refresh rate (also known as the refresh frequency) of the display panel 102. The refresh rate of the display panel 102 can be, for example, 60 Hz, 120 Hz, or 144 Hz. The display time of one frame can also be calculated directly based on the refresh rate of the display panel 102. In addition, the refresh frequency of the display panel is related to the refresh frequency F2 at which the pixels in the display panel are refreshed in units of rows, where F2 = refresh rate of the display panel × number of rows of pixels in the display panel.

[0086] In the related art, as shown in Figure 4, the driver circuit board 1031 obtains the brightness information of 2304 backlight partitions 1011 from the system circuit 1033 at one time, that is, the total number of data bits is 2304×10bit=23040bit; the data transmission rate V1 of the system circuit 1033 to send brightness information to the driver circuit board 1031 can be 0.01bit / ns (bit / nanosecond), and the total time for the driver circuit board 1031 to obtain the brightness information of 2304 backlight partitions 1011 from the system circuit 1033 is 23040 / 0.01=2.304ms (milliseconds). After the driver circuit board 1031 processes the received brightness information to obtain backlight data, it simultaneously sends it to the 64-column driver chip 1032. Since each column has 9 rows of driver chips cascaded in sequence, the duration for the driver circuit board 1031 to send 2304 (34 columns × 36 rows) of backlight data to the 64-column driver chip 1032 is 50 × 36 / 0.001 = 1.8 ms. Thus, in the related art, the duration required for the driver circuit board 1031 to drive 36 rows and 64 columns of 2304 backlight partitions using 9 rows and 64 columns of driver chips is 2.304 + 1.8 = 4.104 ms. Table 2 shows the refresh duration of the light-emitting substrate 10 in the related art, using the configuration parameter table of a display device 100 provided in Table 1 as an example.

[0087] Table 2

[0088] Although the driver circuit board 1031 needs to obtain the brightness information of a total of 2304 backlight partitions 1011 corresponding to M driver chips 1032 in N rows from the system circuit 1033, unlike the related art, an embodiment provided by the present disclosure can be designed so that the driver circuit board 1031 only receives the brightness information corresponding to one row of backlight partitions 1011 at a time, and the brightness information is then processed into backlight data by the driver circuit board 1031; thereafter, the driver circuit board 1031 simultaneously sends the backlight data corresponding to the backlight partition 1011 in this row to 64 driver chips 1032 belonging to different cascade columns.

[0089] Table 3 shows the refresh time of a light-emitting substrate 101 in an embodiment of the present application.

[0090] Table 3

[0091] The time required for the driver circuit board to obtain brightness information for a row of backlight partitions 1011 (i.e., 64 backlight partitions) from the system circuit 1033 is a first time duration t1, where t1 = 64 × 10 / 0.01 = 0.064 ms. The driver circuit board 1031 can transmit backlight data to the driver chip 1032 via a universal asynchronous serial port (UART). The number of bits b2 of backlight data corresponding to each backlight partition 1011 transmitted by the driver circuit board 1031 to the driver chip 1032 can be, for example, 50 bits. The data transmission rate V2 of the backlight data transmitted by the driver circuit board 1031 to the driver chip 1032 can be 0.001 bit / ns. Since the driver circuit board 1031 can simultaneously send backlight data corresponding to the backlight subarea 1011 in the same row to the 64 driver chips 1032 in the same row, the time required for the 64 driver chips 1032 in the same row to receive the backlight data corresponding to the backlight subarea 1011 in the same row is the second time duration t2, where t2 = 50 / 0.001 = 0.05 ms. That is, the first time duration is greater than the second time duration.

[0092] It should be noted that the data transmission rate V1 of the system circuit 1033 for transmitting brightness information to the driver circuit board 1031 is 0.01 bit / ns, which means that the first data transmission clock period for the system circuit 1033 to transmit brightness information to the driver circuit board 1031 can be 100 ns (i.e., the time required for the system circuit 1033 to transmit 1 bit of brightness information to the driver circuit board is 100 ns). The data transmission rate V2 of the driver circuit board 1031 for transmitting backlight data to the driver chip 1032 can be 0.001 bit / ns, which means that the second data transmission clock period for the driver circuit board 1031 to transmit backlight data to the driver chip 1032 can be 1000 ns (i.e., the time required for the driver circuit board 1031 to transmit 1 bit of backlight data to the driver chip 1032 is 1000 ns).

[0093] That is, the driving circuit board 1031 can drive the first The M driver chips 1032 in the row send the backlight data corresponding to the backlight partition 1011 in the nth row, and the driver circuit board 1031 can send the backlight data corresponding to the backlight partition 1011 in the nth row to the M driver chips 1032 in the row. The M driver chips 1032 in the row send backlight data corresponding to the backlight partition 1011 in the n+1th row, and the difference between the second time point and the first time point is equal to the first duration. In this embodiment, the frequency F1 is the reciprocal of the first duration.

[0094] Specifically, in some embodiments, as shown in FIG5A , after receiving and processing the brightness information corresponding to the backlight partition 1011 in the nth row, the driving circuit board 1031 receives the brightness information corresponding to the backlight partition 1011 in the n+1th row, and on the other hand, the driving circuit board 1031 synchronously sends the brightness information corresponding to the backlight partition 1011 in the n+1th row to the driving circuit board 1031. In some other embodiments, as shown in FIG5B , after receiving and processing the brightness information corresponding to the backlight partition 1011 in the nth row, the driver circuit board 1031 waits for the first target time length before sending the backlight data corresponding to the backlight partition 1011 in the nth row to the M driver chips 1032 in the nth row. The M driver chips 1032 in a row send backlight data corresponding to the backlight partition 1011 in the nth row, and synchronously receive brightness information corresponding to the backlight partition 1011 in the (n+1)th row; and so on.

[0095] In this way, all 36 rows of backlight partitions 1011 receive the overall refresh duration of their corresponding backlight data, that is, the value of the total backlight refresh duration T corresponding to one frame of the picture satisfies: (4×9×0.064+0.05)ms≤T≤(4×9×0.064+0.064)ms, which is less than the total backlight refresh duration corresponding to one frame of the picture in the related art.

[0096] It is understood that in the related art, after the driver circuit board 1031 receives the brightness information of all backlight partitions from the system circuit 1033, it sends the backlight data to all the driver chips 1032 through multiple cascade chains; however, in the embodiment of the present application, the refresh mode of the driver chips 1032 in the driver module 103 is row refresh. The driver circuit board 1031 simultaneously sends backlight data to multiple driver chips 1032 located in a row, and the driver circuit board 1031 receives the brightness information and sends the backlight data to the driver chips 1032 at the same time. In this way, the refresh time of the driver circuit board 1031 controlling the refresh of the driver chips 1032 can be reduced. In addition, the driver circuit board 1031 in the embodiment of the present application can refresh the driver chips 1032 row by row, which can improve the synchronization of the refresh of the light-emitting substrate 101 and the display panel 102.

[0097] Table 4 shows the refresh time of another light-emitting substrate 101 in the embodiment of the present application.

[0098] Table 4

[0099] In this embodiment, the first duration t1 is less than the second duration t2. The first phase corresponding to the n+1th row backlight partition 1011 (i.e., the phase in which the driving circuit board 1031 obtains the brightness information corresponding to the n+1th row backlight partition 1011) can be performed simultaneously with the second phase corresponding to the nth row backlight partition 1011 (i.e., the phase in which the driving circuit board 1031 sends the backlight data corresponding to the n+1th row backlight partition 1011 to the driving chip 1032). After the M driver chips 1032 in a row send the backlight data corresponding to the backlight partition 1011 in the n-th row, they immediately obtain the backlight data corresponding to the backlight partition 1011 in the (n+2)-th row.

[0100] That is, the driver circuit board 1031 begins receiving the brightness information corresponding to the backlight subarea 1011 in the nth row at the third time point, and begins receiving the brightness information corresponding to the backlight subarea 1011 in the n+1th row at the fourth time point, and the difference between the fourth time point and the third time point is equal to the second duration. In this embodiment, the frequency F1 is the reciprocal of the second duration.

[0101] In some embodiments, as shown in FIG6A , after the driver circuit board 1031 receives the brightness information corresponding to the nth row backlight partition 1011, it waits for the second target time, on the one hand, receives the brightness information corresponding to the n+1th row backlight partition 1011, and on the other hand, sends the brightness information corresponding to the n+1th row backlight partition 1011 to the nth row backlight partition 1011. The M driver chips 1032 in the row send the backlight data corresponding to the backlight partition 1011 in the nth row, and the second target duration is the difference between the first duration and the second duration. In some embodiments, as shown in FIG6B , after the driver circuit board 1031 receives the brightness information corresponding to the backlight partition 1011 in the nth row, it waits for the second target duration and then receives the brightness information corresponding to the backlight partition 1011 in the n+1th row. On the other hand, it sends the brightness information corresponding to the backlight partition 1011 in the nth row to the M driver chips 1032 in the row. The M driver chips 1032 in the row send backlight data corresponding to the backlight partition 1011 in the n-th row, and the second target duration is the difference between the first duration and the second duration.

[0102] In this way, all 36 rows of backlight partitions 1011 receive the overall refresh duration of their corresponding backlight data, that is, the total backlight refresh duration T corresponding to one frame satisfies: A×N×t2+t1≤T≤A×(N+1)×t2.

[0103] When the first duration is equal to the second duration, the parameters in the driving module 103 may be adjusted according to any one of the two relational expressions in the above embodiments.

[0104] In practical applications, those skilled in the art can select appropriate first and second durations, as well as appropriate first and second data transmission clock cycles, in combination with the embodiments provided in the present disclosure and specific circumstances.

[0105] Please refer to Figure 1. In an optional embodiment, the driving module 103 may further include a timing control chip 1034 (English: timing controller; abbreviated: TCON). The timing control chip 1034 can be electrically connected to the display panel 102. The timing control chip 1034 can be used to receive image information sent by the system circuit 1033 and process the image information into pixel data. After obtaining the pixel data of a row of pixels, the timing control chip 1034 can send pixel data to a row of pixels to refresh a row of pixels. The system circuit 1033 can send image information to the timing control chip 1034 via a VBO (English: V-By-One) interface.

[0106] Referring to FIG. 7 , in an optional embodiment, the system circuit 1033 may be further configured to obtain a source signal, which may be an original image. The system circuit 1033 may further process the source signal to obtain image information and brightness information, and then simultaneously send the image information and brightness information to the timing control circuit and the driver circuit board 1031, respectively. In this manner, the system circuit 1033 may simultaneously send the image information and brightness information to the timing control circuit and the driver circuit board 1031, respectively, to ensure synchronization in the transmission of the image information and brightness information, further improving the refresh synchronization of the light-emitting substrate 101 and the display panel 102.

[0107] In FIG7 , F(frame)-1 and F-2 represent the first frame and the second frame of the source signal, and R-1, R-2, R-3, R-4…R-34, R-35, and R-36 represent the first to 36th rows of backlight partitions 1011, respectively.

[0108] Referring to FIG2 , multiple driver chips 1032 in the same column can optionally be cascaded in a direction away from the driver circuit board 1031 to form a cascade chain. The multiple driver chips 1032 can be arranged in an array on the light-emitting substrate 101 to ensure uniform distribution of the multiple driver chips 1032 across the entire light-emitting substrate 101.

[0109] In some embodiments, a backlight subarea 1011 includes K light-emitting devices, which are electrically connected in series, parallel, or a combination of series and parallel. The light-emitting devices are micro-inorganic light-emitting diodes, and K is a positive integer. For example, the light-emitting devices may be miniLEDs, and the driver chip 1032 may be a micro-integrated circuit chip with dimensions on the order of hundreds of microns.

[0110] Exemplarily, multiple driver chips 1032 arranged along the column direction can form a cascade chain. Each driver chip 1032 may include: a data receiving pin Din (Di), a relay pin Dout (Do), a configuration data input pin Data (Da), a chip power pin VCC, a ground pin GND, and multiple channel pins CH1, CH2, ... CHn. Each channel pin CH is connected to a backlight partition 1011. For example, the channel pin CH is connected to the output end of the backlight partition 1011, and the input end of the backlight partition 1011 is connected to the first power end VLED of the driver circuit board 1031 via a first power line. The input end of the backlight partition 1011 can be the anode of a light-emitting device in the backlight partition 1011, and the output end can be the cathode of another light-emitting device in the backlight partition 1011.

[0111] In the same cascade chain, N driver chips 1032 are sequentially connected in a cascaded manner, moving away from the driver circuit board 1031. The data receiving pin Din of the first-stage driver chip 1032 and the relay pin Dout of the N-stage driver chip 1032 are electrically connected to the driver circuit board 1031, respectively. The relay pin of the n-stage driver chip 1032 is electrically connected to the data receiving pin of the n+1-stage driver circuit, where n = 1, 2, ..., N-1, where N is the number of driver chips 1032 in the cascade chain. The data receiving pin is configured to receive backlight data. In an exemplary embodiment, the relay pin Dout of the last-stage driver chip 1032 in the cascaded relationship can be electrically connected to the feedback terminal FB of the driver circuit board 1031 to transmit relevant information about the entire cascade chain.

[0112] In an exemplary embodiment, as shown in FIG2 , in order to control the corresponding brightness of the second-row backlight partition, since the second-row backlight partition is connected to the channel pin CH2 of the ninth-level driver chip 1032 (IC-9) in each cascade chain, the driver circuit board 1031 needs to send the backlight data of the second-row backlight partition to the ninth-level driver chip 1032 (IC-9) in each cascade chain. The specific process may include: the backlight data of the second row backlight partition is respectively input from the data receiving pin Din of the first-level driver chip 1032 (IC-1) of each cascade chain, and is output from the relay pin Dout of the first-level driver chip 1032 (IC-1), and then input into the data receiving pin Din of the second-level driver chip 1032 (IC-2), and output from the relay pin Dout of the second-level driver chip 1032 (IC-2), and so on, until the backlight data is input into the data receiving pin Din of the ninth-level driver chip 1032 (IC-9), and after entering the ninth-level driver chip 1032 (IC-9), the ninth-level driver chip 1032 (IC-9) outputs a driving signal to the channel pin CH2, thereby controlling the light-emitting devices in the second row backlight partition to emit light.

[0113] The configuration data input pin Data is connected to the configuration data output terminal DATA of the driver circuit board 1031. The chip power pin VCC is connected to the power supply terminal of the driver circuit board 1031. The ground pin GND is connected to the ground signal terminal of the driver circuit board 1031 via the ground line GL. The power supply terminal of the driver circuit board 1031 is used to provide an operating voltage to the driver chip 1032 to ensure its normal operation. The configuration data output terminal DATA of the driver circuit board 1031 provides configuration data to the driver chip 1032. The driver chip 1032 sets configuration parameters based on the configuration data, such as the address number of each driver chip 1032, the maximum current amplitude it can withstand, and the frequency of the current.

[0114] In an exemplary embodiment, the chip power pin VCC can be configured to apply a chip power voltage to the driver chip 1032 for driving the driver chip 1032; the ground pin GND can be configured to apply a ground voltage to the driver chip 1032. The number of ground pins GND can be one or more, depending on the number and arrangement of the remaining pins, and this disclosure does not impose any limitation on this. The number of chip power pins VCC can be one or more, depending on the number and arrangement of the remaining pins, and this disclosure does not impose any limitation on this.

[0115] Figure 2 is merely used to illustrate the electrical connection relationship between the driver circuit board 1031 and the driver chips 1032 and light-emitting devices in the cascade chain. Furthermore, to simplify and highlight the connection relationship between the driver circuit board 1031 and the cascade chain, Figure 2 only shows the connection relationship between the driver circuit board 1031 and two cascade chains. In reality, the driver circuit board 1031 can be electrically connected to multiple cascade chains. In Figure 2, to more clearly illustrate the electrical connection relationship, the dimensions of the driver chip 1032, the light-emitting devices, and the various traces are not drawn to scale, and the relative positions between the driver chip 1032, the light-emitting devices, and the various traces are not shown according to their actual positions. In an exemplary embodiment, the number of cascade chains included in each driver module 103 can be 64, although other numbers are possible, and this disclosure does not impose any limitation on this. The number of cascaded driver chips 1032 included in each cascade chain can be 9, although other numbers are possible, and this disclosure does not impose any limitation on this.

[0116] 8A and 8B, the driver circuit board 1031 is configured to send the backlight data corresponding to the n-th row of backlight partitions in any cascade chain to the first-level driver chip 1032 to the p-th level driver chip 1032 in the cascade chain, Row driver chips 1032. When the row order of the plurality of driver chips 1032 is in the same increasing direction as the cascade order, p and n can satisfy the following relationship: When the row order of the plurality of driver chips 1032 is opposite to the increasing direction of the cascade order, p and n satisfy the following relationship:

[0117] In summary, the embodiment of the present application provides a driver module including a driver circuit board and driver chips arranged in N rows and M columns. The driver module can be used in a display device including a light-emitting substrate and a display substrate. The driver circuit board is configured to refresh the backlight partitions in rows at a frequency F1, wherein the driver circuit board is configured to simultaneously send the first and second light zones to the display through M cascade chains. The M driver chips in a row send backlight data corresponding to the nth row of backlight partitions. The display panel is configured to refresh pixels on a row-by-row basis at a frequency of F2, where F2 = Y × F1. By configuring the driver circuit board to refresh a row of backlight partitions with the same refresh duration as the multiple rows of pixels corresponding to that row of backlight partitions, the light-emitting substrate and the display substrate are refreshed synchronously along the row direction, improving the synchronization of the refreshes of the light-emitting substrate and the display substrate. This can address the poor display quality of display devices in related technologies and improve the display quality of the display device.

[0118] An embodiment of the present application further provides a method for driving a display device. The method can be applied to a driving circuit board included in the driving module in any of the above embodiments. The method may include:

[0119] The backlight partition is refreshed in units of rows at a frequency of F1, wherein the first row is refreshed simultaneously through M cascade chains. The M driver chips in the row send backlight data corresponding to the backlight partition in the nth row, F2 = Y × F1, F2 is the frequency at which the display panel refreshes the pixels in units of rows, A, Y, M and N are all positive integers, and n is a positive integer not greater than (N × A). Indicates a floor operation.

[0120] In summary, the embodiment of the present application provides a driving method for a display device, which can be applied to a driving circuit board included in a driving module, wherein the driving module can include a driving circuit board and driving chips arranged in N rows and M columns. The driving module can be used in a display device including a light-emitting substrate and a display substrate, wherein the driving circuit board is configured to refresh the backlight partitions in rows at a frequency F1, wherein the driving circuit board is configured to simultaneously send the first and second cascade chains to the first and second cascade chains respectively. The M driver chips in a row send backlight data corresponding to the nth row of backlight partitions. The display panel is configured to refresh pixels on a row-by-row basis at a frequency of F2, where F2 = Y × F1. By configuring the driver circuit board to refresh a row of backlight partitions with the same refresh duration as the multiple rows of pixels corresponding to that row of backlight partitions, the light-emitting substrate and the display substrate are refreshed synchronously along the row direction, improving the synchronization of the refreshes of the light-emitting substrate and the display substrate. This can address the poor display quality of display devices in related technologies and improve the display quality of the display device.

[0121] FIG9 is a flow chart of a method for driving a display device according to an embodiment of the present application. The method can be applied to a driving circuit board included in the driving module in any of the above embodiments. Referring to FIG9 , the method includes:

[0122] Step 901: Receive brightness information corresponding to the n-th row of backlight partitions sent by a system circuit.

[0123] The driving module further includes a system circuit, which can send brightness information to the driving circuit board through a single master device communication interface.

[0124] Step 902: Process the brightness information to obtain backlight data corresponding to the backlight partition of the nth row.

[0125] The driver circuit board can obtain backlight data based on the brightness information.

[0126] Step 903: Send the first The M driver chips in a row send backlight data corresponding to the backlight partitions in the nth row, so as to refresh the backlight partitions in units of rows according to a frequency F1, where F2 = Y × F1.

[0127] F2 is the frequency at which the display panel scans pixels line by line, A, Y, M and N are all positive integers, and n is a positive integer not greater than (N×A). Indicates a floor operation. Driver chips in the same column correspond to backlight partitions in the same column, and any driver chip is configured to control A backlight partitions arranged sequentially along the column direction. Multiple backlight partitions arranged along the row direction are configured to provide backlight to Y rows of pixels in the display panel.

[0128] In step 901 and step 903, the first duration is the time required for the driver circuit board to receive the brightness information corresponding to the nth row backlight partition from the system circuit and process the brightness information to obtain backlight data. The time required for the M driver chips in a row to receive the backlight data corresponding to the backlight partitions in the nth row from the driver circuit board.

[0129] When the first time period is greater than the second time period, the driving circuit board moves to the second time period at the first time point. The M driver chips in the row send backlight data, and the driver circuit board sends backlight data to the first The M driver chips in a row send backlight data, and the difference between the first time point and the second time point is equal to the first duration.

[0130] When the second duration is greater than the first duration, the driving circuit board receives the brightness information corresponding to the backlight partition of the nth row at the third time point, and the driving circuit board receives the brightness information corresponding to the backlight partition of the n+1th row at the fourth time point. The difference between the third time point and the fourth time point is equal to the second duration.

[0131] Step 904: Drive The M driver chips in a row control the corresponding backlight partitions to emit light.

[0132] The driver circuit board can drive the The M driver chips in a row can simultaneously control the corresponding backlight partitions to emit light.

[0133] In summary, the embodiment of the present application provides a driving method for a display device, which can be applied to a driving circuit board included in a driving module, wherein the driving module can include a driving circuit board and driving chips arranged in N rows and M columns. The driving module can be used in a display device including a light-emitting substrate and a display substrate, wherein the driving circuit board is configured to refresh the backlight partitions in rows at a frequency F1, wherein the driving circuit board is configured to simultaneously send the first and second cascade chains to the first and second cascade chains respectively. The M driver chips in a row send backlight data corresponding to the nth row of backlight partitions. The display panel is configured to refresh pixels on a row-by-row basis at a frequency of F2, where F2 = Y × F1. By configuring the driver circuit board to refresh a row of backlight partitions with the same refresh duration as the multiple rows of pixels corresponding to that row of backlight partitions, the light-emitting substrate and the display substrate are refreshed synchronously along the row direction, improving the synchronization of the refreshes of the light-emitting substrate and the display substrate. This can address the poor display quality of display devices in related technologies and improve the display quality of the display device.

[0134] An embodiment of the present application further provides a display device, which includes a light-emitting substrate, a display panel, and a driving module. The driving module is electrically connected to the light-emitting substrate and the display panel, and the driving module is the driving module in any of the above embodiments.

[0135] Optionally, the display panel can be applied to any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigation system. For example, a liquid crystal display panel can be used. The display device can be a liquid crystal display device, mobile phone, tablet computer, television, monitor, or any other product or component with a display function. The display panel can include a liquid crystal display panel.

[0136] According to another aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the above-described display panel driving method.

[0137] In this application, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise expressly limited.

[0138] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0139] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0140] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0141] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A driving module, characterized in that: Used in a display device, the display device comprises a light-emitting substrate and a display panel, the light-emitting substrate has a plurality of backlight partitions distributed in an array, and the display panel comprises a plurality of pixels distributed in an array; The driving module includes a driving circuit board and driving chips arranged in N rows and M columns. The driving chips in the same column are sequentially cascaded along the column direction to form a cascade chain, and the M cascade chains are independent of each other. The driver chips in the same column correspond to the backlight partitions in the same column, and any one of the driver chips is configured to control the A backlight partitions arranged in sequence along the column direction, and different driver chips are used to control different backlight partitions; A plurality of backlight subareas arranged along the row direction are configured to provide backlight to Y rows of pixels in the display panel; The driving circuit board is configured to refresh the backlight partitions in units of rows at a frequency F1, wherein the driving circuit board is configured to simultaneously provide the first The M driver chips in the row send backlight data corresponding to the backlight partitions in the nth row; The display panel is configured to refresh pixels in rows at a frequency F2, where F2 = Y × F1; A, Y, M and N are all positive integers, and n is a positive integer not greater than (N×A). Indicates floor operation.

2. The driving module according to claim 1, characterized in that: The driving module also includes a system circuit, and the driving circuit board is also configured to Before the M driver chips in the row send the backlight data corresponding to the backlight partition in the nth row, the M driver chips in the row receive the brightness information corresponding to the backlight partition in the nth row from the system circuit, and process the brightness information to obtain the backlight data corresponding to the backlight partition in the nth row; The first duration is the time required for the driving circuit board to receive the brightness information corresponding to the nth row of backlight partitions from the system circuit and process the brightness information to obtain backlight data; The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board; The first duration is greater than the second duration; The driving circuit board at a first time point The M driver chips in the row send The backlight data corresponding to the backlight partition of the nth row is transmitted to the driving circuit board at a second time point. The M driver chips in the row send backlight data corresponding to the backlight partition in the (n+1)th row, and the difference between the second time point and the first time point is equal to the first duration.

3. The driving module according to claim 1, characterized in that: The driving module also includes a system circuit, and the driving circuit board is also configured to Before the M driver chips in the row send the backlight data corresponding to the backlight partition in the nth row, the M driver chips in the row receive the brightness information corresponding to the backlight partition in the nth row from the system circuit, and process the brightness information to obtain the backlight data corresponding to the backlight partition in the nth row; The first duration is the time required for the driving circuit board to receive the brightness information corresponding to the nth row of backlight partitions from the system circuit and process the brightness information to obtain backlight data; The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board; The second duration is greater than the first duration; The driving circuit board receives brightness information corresponding to the backlight partition of the nth row at a third time point, and the driving circuit board receives brightness information corresponding to the backlight partition of the n+1th row at a fourth time point, and the difference between the fourth time point and the third time point is equal to the second duration.

4. The driving module according to claim 2, characterized in that: The driving module further includes a timing control chip, which is electrically connected to the display panel and is used to receive image information sent by the system circuit and process the image information into pixel data.

5. The driving module according to claim 4, characterized in that: The system circuit is further configured to acquire a source signal, process the source signal to obtain the image information and the brightness information, and then send the image information and the brightness information to the timing control circuit and the driving circuit board respectively.

6. The driving module according to claim 1, characterized in that: The driving circuit board is configured to send the backlight data corresponding to the nth row of backlight partitions in any cascade chain to the pth level driving chip in the cascade chain in sequence. Row driver chip; The p and the n satisfy the following relationship: or, 7. A method for driving a display device, characterized in that: Applied to a driving circuit board included in a driving module as claimed in any one of claims 1 to 6, the method comprises: The backlight partition is refreshed in units of rows at a frequency of F1, wherein the first The M driver chips in the row send backlight data corresponding to the backlight partition in the nth row, F2=Y×F1, F2 is the frequency at which the display panel refreshes pixels in units of rows, A, Y, M and N are all positive integers, and n is a positive integer not greater than (N×A), Indicates floor operation.

8. The method according to claim 7, characterized in that The driving module also includes a system circuit; In the said respectively through M cascade chains simultaneously to the Before the M driver chips in the row send the backlight data corresponding to the backlight partition in the nth row, the method further includes: receiving brightness information corresponding to the n-th row of backlight partitions sent by the system circuit; The brightness information is processed to obtain backlight data corresponding to the n-th row of backlight partitions.

9. The method according to claim 8, characterized in that The first duration is the time required for the driving circuit board to receive the brightness information corresponding to the nth row of backlight partitions from the system circuit and process the brightness information to obtain backlight data; The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board; The second duration is greater than the first duration; The M cascade chains are respectively used to simultaneously send The M driver chips in the row send backlight data corresponding to the backlight partition in the nth row, including: At the first point in time The M driver chips in the row send the backlight data corresponding to the backlight partition in the nth row, and at the second time point send the backlight data corresponding to the backlight partition in the nth row to the M driver chips in the row. The M driver chips in a row send backlight data corresponding to the backlight partition in the (n+1)th row, and the difference between the first time point and the second time point is equal to the first duration.

10. The method according to claim 8, characterized in that The first duration is the time required for the driving circuit board to receive the brightness information corresponding to the nth row of backlight partitions from the system circuit and process the brightness information to obtain backlight data; The second duration is the The time required for the M driver chips in the row to receive the backlight data corresponding to the backlight partition in the nth row from the driver circuit board; The second duration is greater than the first duration; The receiving the brightness information corresponding to the n-th row of backlight partitions sent by the system circuit includes: The brightness information corresponding to the nth row of backlight partitions is received at a third time point, and the brightness information corresponding to the n+1th row of backlight partitions is received at a fourth time point, wherein the difference between the third time point and the fourth time point is equal to the second duration.

11. A display device, characterized in that: The invention comprises a light-emitting substrate, a display panel and a driving module, wherein the driving module is electrically connected to the light-emitting substrate and the display panel, and the driving module is the driving module according to any one of claims 1 to 6.

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