Display device and backlight adjustment method

Abstract

A display device (100) and a backlight adjustment method. The display device (100) comprises light panels (101), driving modules (102), and a controller (103). A plurality of light-emitting units (1011) are provided on each light panel (101); each driving module (102) comprises a register (1021) and a driving chip (1022), the driving chip (1022) is electrically connected to the register (1021), and each driving chip (1022) is electrically connected to one light-emitting unit (1011); the controller (103) is electrically connected to a plurality of driving modules (102) and is used for sending a delay signal to the registers (1021); and each driving chip (1022) drives a corresponding light-emitting unit (1011) on the basis of the delay signal and driving data.

Description

Display device and backlight adjustment method

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 2, 2023, with application number 202311456009.9 and invention name “Display device and backlight adjustment method”, 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 display device and a backlight adjustment method. Background Art

[0003] The backlight module of a display device has multiple light-emitting units, which are arranged on a light board. During use, the control module sends light-emitting instructions to the driver module, which then drives the light-emitting units to emit light. However, the large number of light-emitting units on the light board requires a correspondingly large number of driver modules, which are also arranged close to the light-emitting units. Technical issues

[0004] The light-emitting unit and the driving module are at different distances from the controller, resulting in different lengths of time for the light-emitting instructions to be transmitted between the controller and the driving module. That is, the light-emitting moment of each light-emitting unit is uncontrolled, resulting in multiple light-emitting units not being able to emit light in an orderly manner, causing abnormal conditions such as flickering or dimming in a certain part of the display module, thereby reducing the display quality of the display device equipped with the backlight module. Technical Solutions

[0005] In a first aspect, an embodiment of the present application provides a display device, comprising:

[0006] A light board, wherein a plurality of light-emitting units are provided on the light board;

[0007] A plurality of driving modules, each of which includes a register and a driving chip, wherein the driving chip is electrically connected to the register, and each of the driving chips is electrically connected to one of the light-emitting units;

[0008] A controller, the controller being electrically connected to the plurality of driving modules and configured to send a delay signal to the register;

[0009] When the controller sends driving data to the plurality of driver chips, each driver chip reads a delay signal from the corresponding register, and the driver chip drives the corresponding light-emitting unit according to the delay signal and the driving data. In a second aspect, an embodiment of the present application further provides a backlight adjustment method, which is applied to a display device, wherein the display device comprises: a light board, on which a plurality of light-emitting units are arranged; a plurality of driver modules, the driver modules comprising registers and driver chips, the driver chips being electrically connected to the registers, and each of the driver chips being electrically connected to one of the light-emitting units; and a controller, the controller being electrically connected to a plurality of driver modules;

[0010] The backlight adjustment method includes:

[0011] The controller writes a delay signal to the plurality of LED driving modules;

[0012] When the controller sends driving data to the plurality of driving chips, each of the driving chips reads a delay signal from the corresponding register;

[0013] The driving chip drives the corresponding light-emitting unit according to the delay signal and the driving data. Beneficial effects

[0014] In the display device provided in the embodiment of the present application, the driving module in the display device includes a register and a driver chip. The register can store a delay signal sent by the controller. When the controller sends driving data to multiple driver chips, the driver chip reads the delay signal from the corresponding register, and the driver chip drives the corresponding light-emitting unit according to the delay signal and the driving data. In other words, the delay signal points to extending the time period between the step in which the driver chip receives the driving data and the step in which the driver chip drives the light-emitting unit, thereby controlling the light-emitting moment of each light-emitting unit to solve the delay phenomenon caused by different driving data transmission distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of a first structure of a display device provided in an embodiment of the present application.

[0016] FIG2 is a schematic diagram of a second structure of a display device provided in an embodiment of the present application.

[0017] FIG3 is a schematic structural diagram of a drive module provided in an embodiment of the present application.

[0018] FIG4 is a schematic diagram of the first structure of the light board provided in an embodiment of the present application.

[0019] FIG5 is a schematic diagram of a second structure of a light board provided in an embodiment of the present application.

[0020] FIG6 is a schematic diagram showing the arrangement of the light-emitting units in the Nth row according to an embodiment of the present application.

[0021] FIG7 is a schematic diagram of a third structure of the display device provided in an embodiment of the present application.

[0022] FIG8 is a schematic diagram of a fourth structure of the display device provided in an embodiment of the present application.

[0023] FIG9 is a fifth structural schematic diagram of the display device provided in an embodiment of the present application.

[0024] FIG10 is a schematic diagram of the third structure of the light board provided in an embodiment of the present application.

[0025] FIG11 is a sixth structural schematic diagram of the display device provided in an embodiment of the present application.

[0026] FIG12 is a seventh structural schematic diagram of the display device provided in an embodiment of the present application.

[0027] FIG13 is a flow chart of a backlight adjustment method according to an embodiment of the present application.

[0028] Implementation Methods of the Application

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0030] The backlight module of a display device includes a light board with multiple light-emitting units, which can be light-emitting diodes (LEDs). Generally speaking, the basic operating principle of a display device is dynamic scanning. Dynamic scanning is divided into two methods: row scanning and column scanning. Row scanning is more common, and row scanning is divided into two methods: 8-row scanning and 16-row scanning.

[0031] That is to say, in an ideal state, the multiple light-emitting units on the light board are arranged in an array, generally lighting up row by row from top to bottom, or lighting up column by column from left to right, or lighting up alternate rows or alternate columns.

[0032] However, when the display device is in use, the control module sends a light-emitting instruction to the driver module, and the driver module drives the light-emitting unit to emit light. However, the number of light-emitting units on the lamp board is large, and accordingly, the number of driver modules also increases accordingly, and the driver module is set close to the light-emitting unit. The light-emitting unit and the driver module are at different distances from the controller, resulting in different transmission times for the light-emitting instruction between the controller and the driver module. That is, the light-emitting moment of each light-emitting unit is uncontrolled, resulting in multiple light-emitting units not being able to emit light in an orderly manner, causing abnormal conditions such as flickering or dimming in a certain part of the display module, thereby reducing the display quality of the display device equipped with the backlight module.

[0033] Based on the above, the present application proposes a display device and a backlight adjustment method, in which multiple light-emitting units are driven in an orderly manner to improve the display quality of the display device. Detailed description will be given below with reference to the accompanying drawings.

[0034] Please refer to Figures 1 to 3. Figure 1 is a first structural schematic diagram of the display device provided in an embodiment of the present application, Figure 2 is a second structural schematic diagram of the display device provided in an embodiment of the present application, and Figure 3 is a structural schematic diagram of the driving module provided in an embodiment of the present application.

[0035] The present application provides a display device 100, which may be a liquid crystal display device 100. The display device 100 includes a liquid crystal module and a backlight module, wherein the backlight module provides a surface light source for the liquid crystal module. The display device 100 may be any product or component with a display function, such as a liquid crystal panel, electronic paper, an OLED panel, an LCD television, a liquid crystal display, a digital photo frame, a mobile phone, or a tablet computer.

[0036] The display device 100 includes a light board 101, multiple driver modules 102, and a controller 103. The light board 101 is provided with multiple light-emitting units 1011. The multiple driver modules 102 are disposed on the light board 101 and include registers 1021 and driver chips 1022. The driver chips 1022 are electrically connected to the registers 1021, and each driver chip 1022 is electrically connected to one of the light-emitting units 1011. The controller 103 is electrically connected to the multiple driver modules 102, namely, the registers 1021 and the driver chips 1022. The controller 103 is configured to send a delay signal to the registers 1021.

[0037] The light-emitting unit 1011 may be an LED light string or a single LED light. The light-emitting unit 1011 may also be a sub-millimeter light-emitting diode (mini light-emitting diode, mini-LED).

[0038] Please continue to refer to Figures 1, 4 and 5. Figure 4 is a schematic diagram of the first structure of the lamp board provided in an embodiment of the present application, and Figure 5 is a schematic diagram of the second structure of the lamp board provided in an embodiment of the present application. The number of the lamp boards 101 can be multiple. For the convenience of production and design, the backlight source is evenly divided into several parts. Each part is composed of a lamp board 101 and a plurality of light-emitting units 1011 on the lamp board 101. In order to facilitate wiring and reduce cost interference, the driving module 102 of each light-emitting unit 1011 is also directly provided on the lamp board 101 and is provided near the light-emitting unit 1011. The driving module 102 and the light-emitting unit 1011 can be on the same side of the lamp board 101, or can be arranged opposite to each other. Multiple lamp boards 101 can adopt the same design and can share the same controller 103.

[0039] Register 1021 can be used to store instructions or data. In the embodiment of the present application, register 1021 can be used to store a delay signal, which indicates the time period between the driver chip 1022 receiving the drive data and the driver chip 1022 driving the light-emitting unit 1011. It is understood that in some cases, the light-emitting units 1011 are illuminated row by row, so the delay signals in register 1021 corresponding to the light-emitting units 1011 in the same row are the same. However, the delay signals in register 1021 corresponding to the light-emitting units 1011 in different rows are different. Therefore, the delay signals stored in register 1021 vary depending on the position of the light-emitting unit 1011. That is, when the driving mode is determined, the delay signal depends on the position of the light-emitting unit 1011. As described above, after the driving mode and the position of the light-emitting unit 1011 are determined, the controller 103 can store the corresponding delay signal in register 1021.

[0040] In the related art, the driver chip 1022 immediately drives the light-emitting unit 1011 to emit light after receiving the driving data. However, in the embodiment of the present application, the delay signal stored in the register 1021 can extend the time between the above two steps, thereby effectively solving the phenomenon of local flashing, local darkness, etc. caused by different transmission distances of driving data.

[0041] When the controller 103 sends driving data to the multiple driver chips 1022, each driver chip 1022 reads the delay signal from the corresponding register 1021, and the driver chip 1022 drives the corresponding light-emitting unit 1011 according to the delay signal and the driving data. The delay signal is received by the driver chip 1022 no later than the driving data, so that after receiving the driving data, the driver chip 1022 can execute the delay signal and wait for a period of time before driving the light-emitting unit 1011.

[0042] The display device 100 also includes a power module. This power module is electrically connected to the light-emitting unit 1011 and the controller 103. The driver chip 1022 controls the current of the corresponding light-emitting unit 1011 based on driving data to achieve the corresponding brightness. Specifically, the power module generally outputs a fixed voltage to the controller 103, which then transmits the voltage to the light-emitting unit 1011.

[0043] Please continue with reference to Section 4. In some embodiments, a plurality of light-emitting units 1011 are arranged in rows along a first direction X. The delayed signal corresponding to the light-emitting units 1011 in the Nth row is a first delayed signal, and the delayed signal corresponding to the light-emitting units 1011 in the N+Mth row is a second delayed signal, where N and M are both greater than or equal to 1 and are positive integers. The driver chip 1022 extends the first time period according to the first delayed signal to drive the light-emitting units 1011 in the Nth row. The driver chip 1022 extends the second time period according to the second delayed signal to drive the light-emitting units 1011 in the N+Mth row, where the first time period is less than the second time period.

[0044] For the same row of light-emitting cells 1011, the timing at which the controller 103 transmits the driving data to the driver chip 1022 is approximately the same. For light-emitting cells 1011 in different rows, the timing at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the Nth row is no later than the timing at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the N+Mth row. Taking the first row of light-emitting cells 1011 and the second row of light-emitting cells 1011 as an example, where N is 1 and M is 1, the first row of light-emitting cells 1011 must emit light earlier than the second row of light-emitting cells 1011. Therefore, the first time period must be less than the second time period to ensure that the light-emitting cells 1011 in the N+Mth row emit light after the light-emitting cells 1011 in the Nth row.

[0045] For different rows of light-emitting cells 1011, the time at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the Nth row is equal to the time at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the N+Mth row. In each row of light-emitting cells 1011, the time period for which the delay signal corresponding to each light-emitting cell 1011 is extended may be slightly different. However, when comparing the delay signals corresponding to each light-emitting cell 1011 in each row, the maximum time period for which the delay signal corresponding to the light-emitting cell 1011 in the Nth row is extended is less than the minimum time period for which the delay signal corresponding to the light-emitting cell 1011 in the N+Mth row is extended.

[0046] In the embodiment of the present application, multiple light-emitting units 1011 are distributed in rows, and each driving module can drive the light-emitting unit 1011 to emit light row by row or across rows until all the light-emitting units 1011 emit light, that is, a frame of picture is displayed on the display device 100.

[0047] Please continue to refer to Figure 6, which is a schematic diagram of the arrangement of the light-emitting units in the Nth row provided in an embodiment of the present application. Multiple light-emitting units 1011 are arranged in sequence along the second direction Y. The delay signal corresponding to the nth light-emitting unit 1011 is the third delay signal, and the delay signal corresponding to the n+mth light-emitting unit 1011 is the fourth delay signal, where n and m are greater than or equal to 1 and are positive integers. The driver chip 1022 drives the nth light-emitting unit 1011 after extending the third time period according to the third delay signal. The driver chip 1022 drives the n+mth light-emitting unit 1011 after extending the fourth time period according to the fourth delay signal, where the third time period is less than the fourth time period. The first direction X intersects with the second direction Y. If the multiple light-emitting units 1011 are arranged in an array, the first direction X is perpendicular to the second direction Y. It can be understood that for each row of light-emitting units 1011, by setting the corresponding delay signal, it is ensured that the light-emitting units 1011 can be driven and illuminated one by one.

[0048] For example, please refer to Figure 7, which is a schematic diagram of the third structure of the display device provided in an embodiment of the present application. The plurality of light-emitting units 1011 are arranged in an array of six rows and nine columns, with a total of 54 light-emitting units 1011. The light-emitting order of the light-emitting units 1011 can be from the first row, the second row, the third row to the sixth row; in each row, the light-emitting order of the light-emitting units 1011 can be from the first, the second, the third to the ninth row. When the light-emitting units 1011 are driven in a row-by-row manner, for example, after the ninth light-emitting unit in the first row is driven to light up, the first light-emitting unit in the second row is subsequently lit.

[0049] In some embodiments, referring to FIG. 4 , the light-emitting units 1011 may be arranged in columns along a second direction Y, which is perpendicular to the first direction X. The delay signal corresponding to the light-emitting units 1011 in column A is the fifth delay signal, and the delay signal corresponding to the light-emitting units 1011 in columns A+B is the sixth delay signal. A and B are greater than or equal to 1 and are positive integers. The driver chip 1022 extends the fourth time period according to the fifth delay signal to drive the light-emitting units 1011 in column A. The driver chip 1022 extends the sixth time period according to the sixth delay signal to drive the light-emitting units 1011 in columns A+B. The fifth time period is less than the sixth time period.

[0050] For light-emitting cells 1011 in the same column, the timing at which the controller 103 transmits driving data to the driver chip 1022 is approximately the same. For light-emitting cells 1011 in different columns, the timing at which the controller 103 transmits driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in column A is no later than the timing at which the controller 103 transmits driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in column A+B. Taking the light-emitting cells 1011 in the first and second columns as an example, where A is 1 and B is 1, the light-emitting cells 1011 in the first column need to emit light earlier than the light-emitting cells 1011 in the second column. Therefore, the fifth time period must be less than the sixth time period to ensure that the light-emitting cells 1011 in column A+B emit light after the light-emitting cells 1011 in column A.

[0051] In the embodiment of the present application, multiple light-emitting units 1011 are distributed in columns, and each driving module can drive the light-emitting unit 1011 to emit light column by column or across columns until all the light-emitting units 1011 emit light, that is, a frame of picture is displayed on the display device 100.

[0052] In some embodiments, there are multiple light boards 101. The display device 100 also includes multiple data buses 111, each corresponding to a light board 101. One end of each data bus 111 is electrically connected to the controller 103, and the other end is electrically connected to the driver module 102 on the corresponding light board 101. It is understood that the light board 101 can be a circuit board, and the driver module 102 is integrated on the light board 101. The data bus 111 can connect to the corresponding light board 101, and then connect to the driver module 102 provided on the light board 101, thereby driving the light-emitting unit 1011 connected to the driver module 102.

[0053] Please refer to Figure 8, which is a schematic diagram of the fourth structure of the display device provided by an embodiment of the present application. The light-emitting unit 1011 in the Nth row includes a first light-emitting unit 1011 and a second light-emitting unit 1011. The display device 100 also includes a first data line 104 and a second data line 105. The first data line 104 is electrically connected to the controller 103 and the driving module 102 corresponding to the first light-emitting unit 1011. The second data line 105 is electrically connected to the controller 103 and the driving module 102 corresponding to the second light-emitting unit 1011. The controller 103 simultaneously sends driving data to the corresponding driver chip 1022 through the first data line 104 and the second data line 105. In other words, the first light-emitting unit 1011 and the second light-emitting unit 1011 are located in the same row, and the controller 103 sends driving data to the driver chip 1022 corresponding to the first light-emitting unit 1011 and the second light-emitting unit 1011 through the first data line 104 and the second data line 105.

[0054] In other cases, please continue to refer to Figure 8. The display device 100 also includes a fifth data line 108, which is connected to the first light-emitting unit 1011 and the second light-emitting unit 1011 in sequence. The fifth data line 108 is also connected to the controller 103. The controller 103 sends driving data to the driving chip 1022 corresponding to the first light-emitting unit 1011 and the second light-emitting unit 1011 through the fifth data line 108.

[0055] It can be understood that, for the light-emitting units 1011 located on the same row, regardless of whether the light-emitting units 1011 are connected in series or in parallel, the control area simultaneously sends driving data to the driving module 102 of each light-emitting unit 1011 to ensure that the subsequent driving chip 1022 drives the light-emitting unit 1011 by row after a delay.

[0056] Please refer to Figure 9, which is a schematic diagram of the fifth structure of the display device provided in an embodiment of the present application. The Nth row of light-emitting units 1011 includes a third light-emitting unit 1011, and the N+Mth row of light-emitting units 1011 includes a fourth light-emitting unit 1011. The display device 100 also includes a third data line 106 and a fourth data line 107. The third data line 106 is electrically connected to the controller 103 and the driver module 102 corresponding to the third light-emitting unit 1011, and the fourth data line 107 is electrically connected to the controller 103 and the driver module 102 corresponding to the fourth light-emitting unit 1011. The third data line 106 is separated from the light-emitting units 1011 in the N+Mth row, and the fourth data line 107 is separated from the light-emitting units 1011 in the Nth row. After the controller 103 sends driving data to the corresponding driver chip 1022 via the third data line 106, it sends the driving data to the corresponding driver chip 1022 via the fourth data line 107.

[0057] Because the third data line 106 and the fourth data line 107 are electrically connected to the light-emitting units 1011 in different rows, the controller 103 can distribute the driving data to the different data lines in time periods, thereby reducing the data transmission pressure on the controller 103. Please refer to Figure 10, which is a schematic diagram of the third structure of the light board provided in an embodiment of the present application. Taking an array of three rows and three columns of light-emitting units 1011 as an example, the first sub-data line 1041 connects the second light-emitting unit 1011 in the first row, the third light-emitting unit 1011 in the first row, and the third light-emitting unit 1011 in the second row. The second sub-data line 1042 connects the first light-emitting unit 1011 in the first row, the first light-emitting unit 1011 in the second row, and the second light-emitting unit 1011 in the second row. The third sub-data line 1043 connects the first light-emitting unit 1011 in the third row, the second light-emitting unit 1011 in the third row, and the third light-emitting unit 1011 in the third row.

[0058] The controller 103 first sends driving data to the driver chips 1022 corresponding to the first and second rows of light-emitting cells 1011 via the first and second sub-data lines 1041 and 1042. After receiving the driving data, the driver chips 1022 delay driving the first and second rows of light-emitting cells 1011 by a corresponding time according to the delay signal in the corresponding register 1021. The controller 103 then sends driving data to the driver chips 1022 corresponding to the third row of light-emitting cells 1011 via the third sub-data line 1043. After receiving the driving data, the driver chips 1022 delay driving the third row of light-emitting cells 1011 by a corresponding time according to the delay signal in the corresponding register 1021.

[0059] In some embodiments, please refer to Figure 11, which is a sixth structural diagram of a display device provided in an embodiment of the present application. The display device 100 also includes a main chip 109, which is electrically connected to the controller 103. The main chip 109 is used to obtain the position information of multiple light-emitting units 1011 and send the position information to the controller 103. The controller 103 is used to obtain a delay signal based on the position information of the light-emitting unit 1011. The main chip 109 can be a system on chip (SOC). The position information of the light-emitting unit 1011 can be automatically input by the user. The position of the light-emitting unit 1011 can refer to the position of the light-emitting unit 1011 in the light-emitting unit 1011 array, for example, the position of the light-emitting unit 1011 is the third row and second column. Then the controller 103 obtains the delay signal based on the position of the light-emitting unit 1011 and the refresh rate of the display device 100.

[0060] In some embodiments, please refer to FIG. 12 , which is a schematic diagram of a seventh structural embodiment of a display device provided by an embodiment of the present application. The display device 100 further includes a storage module 110 for storing a conversion lookup table. The storage module 110 is electrically connected to a controller 103 , which is configured to obtain a delay signal based on the conversion lookup table and the position information of the light-emitting unit 1011. By pre-storing the conversion lookup table, the computational effort of the controller 103 is greatly reduced, and the speed of obtaining the delay signal is increased.

[0061] The main chip 109 is further configured to obtain brightness information of the plurality of light-emitting units 1011 and transmit the brightness information to the controller 103. The controller 103 is configured to obtain driving data based on the brightness information of the light-emitting units 1011. It is understood that the driver chip 1022 controls the current of the corresponding light-emitting unit 1011 based on the driving data to achieve the corresponding brightness.

[0062] Please refer to Figure 13, which is a flow chart of a backlight adjustment method provided in an embodiment of the present application. This embodiment of the present application also provides a backlight adjustment method, which is applied to the display device 100 described above. The backlight adjustment method includes the following steps: S1. The controller 103 writes a delay signal to multiple LED driver modules; S2. When the controller 103 sends drive data to multiple driver chips 1022, each driver chip 1022 reads the delay signal from the corresponding register 1021; S3. The driver chip 1022 drives the corresponding light-emitting unit 1011 based on the delay signal and the drive data.

[0063] In some embodiments, multiple light-emitting units 1011 are distributed in rows along the first direction X, the delay signal corresponding to the light-emitting unit 1011 in the Nth row is the first delay signal, and the delay signal corresponding to the light-emitting unit 1011 in the N+Mth row is the second delay signal, and N and M are greater than or equal to 1 and are positive integers.

[0064] The driver chip 1022 corresponding to the Nth row of light-emitting units 1011 extends the first time period according to the first delay signal to drive the Nth row of light-emitting units 1011; the driver chip 1022 corresponding to the N+Mth row of light-emitting units 1011 extends the second time period according to the second delay signal to drive the N+Mth row of light-emitting units 1011.

[0065] The plurality of light-emitting units 1011 are sequentially arranged along the second direction Y, and the first direction X is perpendicular to the second direction Y. The delay signal corresponding to the nth light-emitting unit 1011 is the third delay signal, and the delay signal corresponding to the (n+m)th light-emitting unit 1011 is the fourth delay signal, where n and m are greater than or equal to 1 and are positive integers.

[0066] The driver chip 1022 extends the third time period according to the third delay signal to drive the nth light emitting unit 1011, and extends the fourth time period according to the fourth delay signal to drive the (n+m)th light emitting unit 1011. The third time period is shorter than the fourth time period.

[0067] The plurality of light-emitting units 1011 are arranged in rows along a first direction X. The delayed signal corresponding to the light-emitting units 1011 in the Nth row is a first delayed signal, and the delayed signal corresponding to the light-emitting units 1011 in the N+Mth row is a second delayed signal, where N and M are greater than or equal to 1 and are positive integers. The driver chip 1022 extends the first time period according to the first delayed signal to drive the light-emitting units 1011 in the Nth row. The driver chip 1022 extends the second time period according to the second delayed signal to drive the light-emitting units 1011 in the N+Mth row, where the first time period is less than the second time period.

[0068] For the same row of light-emitting cells 1011, the timing at which the controller 103 transmits the driving data to the driver chip 1022 is approximately the same. For light-emitting cells 1011 in different rows, the timing at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the Nth row is no later than the timing at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the N+Mth row. Taking the first row of light-emitting cells 1011 and the second row of light-emitting cells 1011 as an example, where N is 1 and M is 1, the first row of light-emitting cells 1011 must emit light earlier than the second row of light-emitting cells 1011. Therefore, the first time period must be less than the second time period to ensure that the light-emitting cells 1011 in the N+Mth row emit light after the light-emitting cells 1011 in the Nth row.

[0069] For different rows of light-emitting cells 1011, the time at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the Nth row is equal to the time at which the controller 103 transmits the driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in the N+Mth row. In each row of light-emitting cells 1011, the time period for which the delay signal corresponding to each light-emitting cell 1011 is extended may be slightly different. However, when comparing the delay signals corresponding to each light-emitting cell 1011 in each row, the maximum time period for which the delay signal corresponding to the light-emitting cell 1011 in the Nth row is extended is less than the minimum time period for which the delay signal corresponding to the light-emitting cell 1011 in the N+Mth row is extended.

[0070] In the embodiment of the present application, multiple light-emitting units 1011 are distributed in rows, and each driving module can drive the light-emitting unit 1011 to emit light row by row or across rows until all the light-emitting units 1011 emit light, that is, a frame of picture is displayed on the display device 100.

[0071] Please continue to refer to Figure 6, which is a schematic diagram of the arrangement of the light-emitting units in the Nth row provided in an embodiment of the present application. Multiple light-emitting units 1011 are arranged in sequence along the second direction Y. The delay signal corresponding to the nth light-emitting unit 1011 is the third delay signal, and the delay signal corresponding to the n+mth light-emitting unit 1011 is the fourth delay signal, where n and m are greater than or equal to 1 and are positive integers. The driver chip 1022 drives the nth light-emitting unit 1011 after extending the third time period according to the third delay signal. The driver chip 1022 drives the n+mth light-emitting unit 1011 after extending the fourth time period according to the fourth delay signal, where the third time period is less than the fourth time period. The first direction X intersects with the second direction Y. If the multiple light-emitting units 1011 are arranged in an array, the first direction X is perpendicular to the second direction Y. It can be understood that for each row of light-emitting units 1011, by setting the corresponding delay signal, it is ensured that the light-emitting units 1011 can be driven and illuminated one by one.

[0072] For example, please refer to Figure 7, which is a schematic diagram of the third structure of the display device provided in an embodiment of the present application. The plurality of light-emitting units 1011 are arranged in an array of six rows and nine columns, with a total of 54 light-emitting units 1011. The light-emitting order of the light-emitting units 1011 can be from the first row, the second row, the third row to the sixth row; in each row, the light-emitting order of the light-emitting units 1011 can be from the first, the second, the third to the ninth row. When the light-emitting units 1011 are driven in a row-by-row manner, for example, after the ninth light-emitting unit in the first row is driven to light up, the first light-emitting unit in the second row is subsequently lit.

[0073] In some embodiments, referring to FIG. 4 , the light-emitting units 1011 may be arranged in columns along a second direction Y, which is perpendicular to the first direction X. The delay signal corresponding to the light-emitting units 1011 in column A is the fifth delay signal, and the delay signal corresponding to the light-emitting units 1011 in columns A+B is the sixth delay signal. A and B are greater than or equal to 1 and are positive integers. The driver chip 1022 extends the fifth time period according to the fifth delay signal to drive the light-emitting units 1011 in column A. The driver chip 1022 extends the sixth time period according to the sixth delay signal to drive the light-emitting units 1011 in columns A+B. The fifth time period is less than the sixth time period.

[0074] For light-emitting cells 1011 in the same column, the timing at which the controller 103 transmits driving data to the driver chip 1022 is approximately the same. For light-emitting cells 1011 in different columns, the timing at which the controller 103 transmits driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in column A is no later than the timing at which the controller 103 transmits driving data to the driver chip 1022 corresponding to the light-emitting cells 1011 in column A+B. Taking the light-emitting cells 1011 in the first and second columns as an example, where A is 1 and B is 1, the light-emitting cells 1011 in the first column need to emit light earlier than the light-emitting cells 1011 in the second column. Therefore, the fifth time period must be less than the sixth time period to ensure that the light-emitting cells 1011 in column A+B emit light after the light-emitting cells 1011 in column A.

[0075] In the embodiment of the present application, multiple light-emitting units 1011 are distributed in columns, and each driving module can drive the light-emitting unit 1011 to emit light column by column or across columns until all the light-emitting units 1011 emit light, that is, a frame of picture is displayed on the display device 100.

[0076] The backlight adjustment method provided in this application is applied to the display device 100 in the above embodiment, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiment, which will not be described in detail here.

[0077] In the display device 100 provided in the embodiment of the present application, the driver module 102 in the display device 100 includes a register 1021 and a driver chip 1022. The register 1021 can store a delay signal sent by the controller 103. When the controller 103 sends driving data to multiple driver chips 1022, the driver chip 1022 reads the delay signal from the corresponding register 1021, and the driver chip 1022 drives the corresponding light-emitting unit 1011 according to the delay signal and the driving data. In other words, the delay signal is used to extend the time period between the step in which the driver chip 1022 receives the driving data and the step in which the driver chip 1022 drives the light-emitting unit 1011. This can control the light-emitting moment of each light-emitting unit 1011 to solve the delay phenomenon caused by different driving data transmission distances.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0080] The display device and backlight adjustment method provided by the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the present application. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concepts of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A display device, comprising: A light board, wherein a plurality of light-emitting units are arranged on the light board; A plurality of driving modules, each of which comprises a register and a driving chip, wherein the driving chip is electrically connected to the register, and each of the driving chips is electrically connected to one of the light-emitting units; A controller, the controller being electrically connected to the plurality of driving modules and configured to send a delay signal to the register; When the controller sends driving data to the plurality of driving chips, each of the driving chips reads a delay signal from the corresponding register, and the driving chip drives the corresponding light-emitting unit according to the delay signal and the driving data.

2. The display device according to claim 1, wherein: The plurality of light-emitting units are distributed in rows, and each driving module can drive the light-emitting units to emit light row by row or across rows.

3. The display device according to claim 2, wherein: The multiple light-emitting units are distributed in rows along the first direction, the delay signal corresponding to the light-emitting units in the Nth row is the first delay signal, and the delay signal corresponding to the light-emitting units in the N+Mth row is the second delay signal, and N and M are greater than or equal to 1 and are positive integers; the driver chip drives the light-emitting units in the Nth row after extending the first time period according to the first delay signal, and the driver chip drives the light-emitting units in the N+Mth row after extending the second time period according to the second delay signal, and the first time period is less than the second time period.

4. The display device according to claim 3, wherein: The multiple light-emitting units are arranged in sequence along the second direction, the delay signal corresponding to the nth light-emitting unit is the third delay signal, and the delay signal corresponding to the n+mth light-emitting unit is the fourth delay signal, and n and m are greater than or equal to 1 and are positive integers; the driver chip drives the nth light-emitting unit after extending the third time period according to the third delay signal, and the driver chip drives the n+mth light-emitting unit after extending the fourth time period according to the fourth delay signal, and the third time period is less than the fourth time period; the first direction intersects with the second direction.

5. The display device according to claim 3, wherein: The Nth row of light-emitting units includes a first light-emitting unit and a second light-emitting unit, and the display device also includes a first data line and a second data line, the first data line is electrically connected to the controller and a driving module corresponding to the first light-emitting unit, the second data line is electrically connected to the controller and a driving module corresponding to the second light-emitting unit, and the controller simultaneously sends driving data to the corresponding driving chip through the first data line and the second data line.

6. The display device according to claim 5, wherein: The display device also includes a fifth data line, which is connected to the first light-emitting unit and the second light-emitting unit in sequence. The fifth data line is also connected to the controller, and the controller sends driving data to the driving chips corresponding to the first light-emitting unit and the second light-emitting unit through the fifth data line.

7. The display device according to claim 3, wherein: The Nth row of light-emitting units includes a third light-emitting unit, the N+Mth row of light-emitting units includes a fourth light-emitting unit, the display device also includes a third data line and a fourth data line, the third data line is electrically connected to the controller and a driving module corresponding to the third light-emitting unit, the fourth data line is electrically connected to the controller and a driving module corresponding to the fourth light-emitting unit, the third data line is spaced from the N+Mth row of light-emitting units, the fourth data line is spaced from the Nth row of light-emitting units, and the controller sends driving data to the corresponding driving chip through the third data line, and then sends driving data to the corresponding driving chip through the fourth data line.

8. The display device according to claim 1, wherein: The plurality of light-emitting units are distributed in columns, and each driving module can drive the light-emitting units to emit light column by column or across columns.

9. The display device according to claim 8, wherein: The multiple light-emitting units are distributed in columns along the second direction, the delay signal corresponding to the light-emitting units in the Ath column is the fifth delay signal, and the delay signal corresponding to the light-emitting units in the A+Bth column is the sixth delay signal, and A and B are greater than or equal to 1 and are positive integers; the driver chip drives the light-emitting units in the Ath column after extending the fifth time period according to the fifth delay signal, and the driver chip drives the light-emitting units in the A+Bth column after extending the sixth time period according to the sixth delay signal; the fifth time period is less than the sixth time period.

10. The display device according to claim 1, wherein: It also includes a main chip, which is electrically connected to the controller. The main chip is used to obtain position information of multiple light-emitting units and send the position information to the controller. The controller is used to obtain the delay signal according to the position information of the light-emitting units.

11. The display device according to claim 10, wherein: It also includes a storage module, which is used to store a conversion reference table. The storage module is electrically connected to the controller, and the controller is used to obtain the delay signal according to the conversion reference table and the position information of the light-emitting unit.

12. The display device according to claim 10, wherein: The main chip is also used to obtain brightness information of the plurality of light-emitting units and send the brightness information to the controller, and the controller is used to obtain the driving data according to the brightness information of the light-emitting units.

13. The display device according to claim 1, wherein: There are multiple light boards, and the display device also includes multiple data buses, each of which corresponds to a light board. One end of each data bus is electrically connected to the controller, and the other end is electrically connected to the driving module on the corresponding light board.

14. The display device according to claim 1, wherein: It also includes a power module, which is electrically connected to the light-emitting unit and the driving module respectively, and the driving module is used to control the current size of the corresponding light-emitting unit according to the driving data.

15. The display device according to claim 1, wherein: The display device further includes a plurality of data buses, each of which corresponds to a light board, one end of each of which is electrically connected to the controller, and the other end of each of which is electrically connected to the driving module on the corresponding light board.

16. A backlight adjustment method, applied to a display device, the display device comprising: A light board, wherein a plurality of light-emitting units are arranged on the light board; A plurality of driving modules, each of which comprises a register and a driving chip, wherein the driving chip is electrically connected to the register, and each of the driving chips is electrically connected to one of the light-emitting units; A controller, the controller being electrically connected to the plurality of drive modules; The backlight adjustment method comprises: The controller writes a delay signal to the plurality of LED driving modules; When the controller sends driving data to the plurality of driving chips, each of the driving chips reads a delay signal from the corresponding register; The driving chip drives the corresponding light-emitting unit according to the delay signal and the driving data.

17. The backlight adjustment method according to claim 16, wherein: The plurality of light-emitting units are distributed in rows, and each driving module can drive the light-emitting units to emit light row by row or across rows.

18. The backlight adjustment method according to claim 17, wherein: The multiple light-emitting units are distributed in rows along the first direction, the delay signal corresponding to the light-emitting units in the Nth row is the first delay signal, and the delay signal corresponding to the light-emitting units in the N+Mth row is the second delay signal, and N and M are greater than or equal to 1 and are positive integers; the driver chip drives the light-emitting units in the Nth row after extending the first time period according to the first delay signal, and the driver chip drives the light-emitting units in the N+Mth row after extending the second time period according to the second delay signal, and the first time period is less than the second time period.

19. The backlight adjustment method according to claim 18, wherein: The multiple light-emitting units are arranged in sequence along the second direction, the delay signal corresponding to the nth light-emitting unit is the third delay signal, and the delay signal corresponding to the n+mth light-emitting unit is the fourth delay signal, and n and m are greater than or equal to 1 and are positive integers; the driver chip drives the nth light-emitting unit after extending the third time period according to the third delay signal, and the driver chip drives the n+mth light-emitting unit after extending the fourth time period according to the fourth delay signal, and the third time period is less than the fourth time period; the first direction intersects with the second direction.

20. The backlight adjustment method according to claim 16, wherein: The multiple light-emitting units are distributed in columns along the second direction, the delay signal corresponding to the light-emitting units in the Ath column is the fifth delay signal, and the delay signal corresponding to the light-emitting units in the A+Bth column is the sixth delay signal, and A and B are greater than or equal to 1 and are positive integers; the driver chip drives the light-emitting units in the Ath column after extending the fifth time period according to the fifth delay signal, and the driver chip drives the light-emitting units in the A+Bth column after extending the sixth time period according to the sixth delay signal; the fifth time period is less than the sixth time period.

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