WO2022193441A1 - Mini LED 背光模组的驱动方法、驱动电路及显示装置 - Google Patents

Mini LED 背光模组的驱动方法、驱动电路及显示装置 Download PDF

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Publication number
WO2022193441A1
WO2022193441A1 PCT/CN2021/097245 CN2021097245W WO2022193441A1 WO 2022193441 A1 WO2022193441 A1 WO 2022193441A1 CN 2021097245 W CN2021097245 W CN 2021097245W WO 2022193441 A1 WO2022193441 A1 WO 2022193441A1
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WIPO (PCT)
Prior art keywords
backlight
light
emitting elements
mini led
backlight module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/097245
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English (en)
French (fr)
Inventor
王照
刘金风
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
TCL China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TCL China Star Optoelectronics Technology Co Ltd filed Critical TCL China Star Optoelectronics Technology Co Ltd
Priority to US17/433,983 priority Critical patent/US20230360613A1/en
Publication of WO2022193441A1 publication Critical patent/WO2022193441A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/023—Display panel composed of stacked panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation

Definitions

  • the present application relates to the field of display technology, and in particular, to a driving method, a driving circuit and a display device of a mini LED backlight module.
  • Mini LED technology can be understood as a comprehensive upgraded version of LCD.
  • the backlight layer of mini LED can accommodate more LEDs per unit area, thereby greatly increasing the number of backlight sources. Therefore, the design of regional brightness adjustment can be carried out, so that LEDs can be turned off in individual areas. In this way, complete black is achieved, which not only reduces power consumption, but also achieves ultra-high contrast and fine dynamic distribution due to the increase in the number of LEDs per unit area, making the bright field brighter and the dark field darker, so that the display effect is better. meticulous.
  • FIG. 1 is a schematic structural diagram of a mini LED backlight module in the prior art.
  • the mini LED backlight is formed by splicing multiple light panels (each dotted frame is a light panel).
  • the organic light-emitting diodes (LEDs) arranged in an array are distributed on the light board.
  • the multiple light boards are driven by separate and independent scanning, the multiple light boards are simultaneously lit in one frame of display period, that is, the mini
  • Each row of LEDs in the LED backlight works simultaneously, that is, they may be lit at the same time, which will bring about the problem of excessive current fluctuation, which will lead to the reduction of the life of the organic light emitting diode, noise and electromagnetic interference.
  • the mini LED backlight is formed by splicing multiple light panels. Each light panel is distributed with LEDs arranged in an array. Although the multiple light panels are driven by separate and independent scanning, the multiple light panels are in one frame. It is lit at the same time during the display period, that is, the mini Each row of LEDs in the LED backlight works simultaneously, that is, they may be lit at the same time, which will bring about the problem of excessive current fluctuation, which will lead to the reduction of the life of the organic light emitting diode, noise and electromagnetic interference.
  • the embodiment of the present application provides a mini A driving method, a driving circuit and a display device for an LED backlight module.
  • the embodiments of the present application provide a driving method for a mini LED backlight module, the mini The LED backlight module includes k horizontally spliced backlight sub-regions, each of the backlight sub-regions includes light-emitting elements arranged in an array of m rows*n columns, where m, n and k are all positive integers; the driving method includes:
  • m scanning signals are provided according to a preset timing sequence, and m rows of the light-emitting elements of the mini LED backlight module are sequentially scanned according to the m scanning signals;
  • the input data signals are sequentially staggered to the first to k-th backlight partitions according to the brightness information, respectively.
  • the light-emitting elements in the i-th row of the 1-th to the k-th backlight partition work simultaneously until the mini is driven. All the light-emitting elements in the LED backlight module work; wherein, i is a positive integer, and 1 ⁇ i ⁇ m.
  • the inputting data signals to the 1st to the kth backlight partitions in sequence is staggered, so that the light-emitting elements in the i-th row of the 1st to the kth backlight partitions work simultaneously, Specifically include:
  • the light-emitting elements in the i-th row of the two backlight sub-regions that are continuously driven are separated by a unit duration, wherein the unit duration is each row of each of the backlight sub-regions Time-consuming for the light-emitting element to be turned on.
  • the backlight source provided by the LED backlight module reaches the backlight grayscale required by the backlight grayscale information.
  • the area and shape of each of the backlight partitions are the same.
  • the embodiments of the present application provide a driving circuit for an ini LED backlight module, the mini
  • the LED backlight module includes k horizontally spliced backlight sub-regions, each of the backlight sub-regions includes m rows*n columns of light-emitting elements, where m, n and k are all positive integers;
  • the drive circuit includes a gate driver and a source driver ,in:
  • the gate driver is configured to provide m scanning signals according to a preset timing sequence in each frame display period, and sequentially scan the m rows of the light-emitting elements of the mini LED backlight module according to the m scanning signals;
  • the source driver is used for, in each frame display period, when the light-emitting elements of the i-th row of the mini LED backlight module are scanned, sequentially staggered to the first to k-th backlights according to the brightness information.
  • Input data signals to the partitions respectively make the light-emitting elements in the i-th row of the 1st to k-th backlight partitions work simultaneously until the mini is driven. All the light-emitting elements in the LED backlight module work; wherein, i is a positive integer, and 1 ⁇ i ⁇ m.
  • the area and shape of each of the backlight partitions are the same.
  • each of the backlight panels is the same in area and shape.
  • each of the backlight panels includes the same number of the light emitting elements.
  • the source driver is further configured to determine backlight grayscale information according to the brightness information, and control each row of the light-emitting elements in each of the backlight partitions to be lit according to the backlight grayscale information length of time so that the mini The backlight source provided by the LED backlight module reaches the backlight grayscale required by the backlight grayscale information.
  • each of the backlight partitions includes a plurality of horizontal and/or vertical spliced backlight panels, and each of the backlight panels is provided with a driving unit and a plurality of the light-emitting elements, wherein the The driving unit is respectively connected with a plurality of the light-emitting elements and the source driver, and the source driver controls the light-emitting duration and light-emitting brightness of the plurality of light-emitting elements through the driving unit.
  • the light-emitting element is an organic light-emitting diode.
  • an embodiment of the present application further provides a display device, the display device includes a mini LED backlight module and the mini A drive circuit of an LED backlight module, the drive circuit of the mini LED backlight module is used to drive the mini LED backlight module to provide a backlight source for the display device;
  • the mini LED backlight module includes k horizontally spliced backlight partitions, each of which includes m rows*n columns of light-emitting elements, where m, n and k are all positive integers;
  • the drive circuit includes a gate driver and a source driver, where:
  • the gate driver is configured to provide m scanning signals according to a preset timing sequence in each frame display period, and sequentially scan the m rows of the light-emitting elements of the mini LED backlight module according to the m scanning signals;
  • the source driver is used for, in each frame display period, when the light-emitting elements of the i-th row of the mini LED backlight module are scanned, sequentially staggered to the first to k-th backlights according to the brightness information.
  • Input data signals to the partitions respectively make the light-emitting elements in the i-th row of the 1st to k-th backlight partitions work simultaneously until the mini is driven.
  • All the light-emitting elements in the LED backlight module work; wherein, i is a positive integer, and 1 ⁇ i ⁇ m, and the backlight grayscale information is determined according to the brightness information, and the control is controlled according to the backlight grayscale information
  • the duration of each row of the light-emitting elements in each of the backlight partitions is lit, so that the mini The backlight source provided by the LED backlight module reaches the backlight grayscale required by the backlight grayscale information.
  • each of the backlight partitions includes a plurality of horizontal and/or vertical spliced backlight panels, and each of the backlight panels is provided with a driving unit and a plurality of the light-emitting elements, wherein the The driving unit is respectively connected with a plurality of the light-emitting elements and the source driver, and the source driver controls the light-emitting duration and light-emitting brightness of the plurality of light-emitting elements through the driving unit.
  • the light-emitting element is an organic light-emitting diode.
  • the area and shape of each of the backlight partitions are the same.
  • each of the backlight panels is the same in area and shape.
  • each of the backlight panels includes the same number of the light emitting elements.
  • the mini The LED backlight module includes k horizontally spliced backlight partitions.
  • the drive circuit includes a gate driver and a source driver.
  • the gate driver provides a scan signal for the mini
  • the source driver drives the mini in turn according to the brightness information
  • the row of light-emitting elements in each horizontally spliced backlight sub-area in the LED backlight module work respectively at the same time, that is, the source driver makes the row of light-emitting elements in the plurality of backlight sub-areas to be lit or not lit at the same time, so that put the mini In the LED backlight module, each row of light-emitting elements that originally need to work at the same time is divided into multiple backlight partitions.
  • FIG. 1 is a schematic structural diagram of a mini LED backlight module in the prior art.
  • FIG. 2 is a schematic time sequence diagram of a data signal of a mini LED backlight module in the prior art.
  • FIG. 3 is a schematic structural diagram of a driving circuit of a mini LED backlight module provided by an embodiment of the present application.
  • FIG. 4 is a schematic time sequence diagram of a first data signal of the mini LED backlight module provided by the embodiment of the present application.
  • FIG. 5 is another schematic structural diagram of a mini LED backlight module in the prior art.
  • FIG. 6 is a schematic time sequence diagram of a second data signal of the mini LED backlight module provided by the embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a method for driving a mini LED backlight module provided by an embodiment of the present application.
  • FIG 1 is a schematic diagram of the data signal timing of the mini LED backlight module in the prior art.
  • the data signals simultaneously Input data signals to the left backlight partition 11 and the right backlight partition 12, so that the same row of LEDs in the left backlight partition 11 and the right backlight partition 12 are turned on at the same time, so that each time a row of LEDs of the mini LED backlight module is lit , it will bring large fluctuations to the backlight current.
  • the backlight current switches between high current and low current, that is, the backlight current has large fluctuations. This will cause great damage to the LEDs of the mini LED backlight module, resulting in a short lifespan of the LEDs, as well as problems of noise and electromagnetic interference.
  • FIG. 3 is a schematic structural diagram of the driving circuit for a mini LED backlight module provided by an embodiment of the present application.
  • the mini LED The backlight module includes k horizontally spliced backlight sub-regions 101, and each backlight sub-region 101 includes m rows*n columns of light-emitting elements; wherein, m, n and k are all positive integers.
  • the drive circuit includes a gate driver and a source driver, wherein:
  • the gate driver is used to provide m scanning signals according to a preset timing in each frame display period, and sequentially scan m rows of light-emitting elements of the mini LED backlight module according to the m scanning signals;
  • the source driver is used to input data signals to the 1st to kth backlight partitions in sequence according to the brightness information when the i-th row of light-emitting elements of the mini LED backlight module is scanned during the display period of each frame, respectively. Make the light-emitting elements in the i-th row of the 1st to the k-th backlight partition work at the same time until the mini is driven All light-emitting elements in the LED backlight module work; wherein, i is a positive integer, and 1 ⁇ i ⁇ m.
  • the gate driver first provides m scan signals according to the preset timing to drive the mini
  • the m rows of light-emitting elements of the LED backlight module that is, the corresponding row of light-emitting elements are driven by each scan signal in turn.
  • the source driver will stagger according to the brightness information.
  • Input data signals to the 1st to kth backlight partitions respectively make the n light-emitting elements in the i-th row of the 1st to kth backlight partitions 101 work simultaneously until all the light-emitting elements in the mini LED backlight module are activated. working.
  • the simultaneous operation of n light-emitting elements means that the n light-emitting elements are lit at the same time, or the n light-emitting elements are not lit at the same time; the brightness signal includes the m rows of light-emitting elements in each backlight sub-area 101 that need to be turned on respectively. Information that is illuminated and does not need to be illuminated.
  • the driving circuit of the mini LED backlight module provided by the embodiment of the present application, when the gate driver is a mini
  • the gate driver inputs data signals to the 1st to kth backlight partitions 101 respectively
  • the 1st to kth backlight partitions 101 of the horizontally spliced 101 are sequentially driven.
  • the row of light-emitting elements work simultaneously, so compared with the prior art, the source driver is used to drive the mini at the same time.
  • Each row of light-emitting elements of the LED backlight module works at the same time, and the drive circuit of the mini LED backlight module can reduce the amplitude and fluctuation of the current, thereby preventing the same row of light-emitting elements of the mini LED backlight module from being lit at the same time.
  • the problem of excessive backlight current is a problem of excessive backlight current.
  • the driving circuit of the mini LED backlight module follows the original timing of the scan signal output by the gate driver, and only changes the timing of the data signal output by the source driver.
  • the drive circuit of the LED backlight module can not modify the timing of the scan signal output by the gate driving signal, but only change the timing of the data signal output by the source driver, which can simplify the mini The workflow of the drive circuit of the LED backlight module.
  • the lighting time of the i-th row of light-emitting elements of the two backlight sub-areas 101 that are continuously driven is separated by a unit time, wherein the unit time is the time required for each row of light-emitting elements of each backlight sub-area 101 to be turned on. Time.
  • the mini LED backlight module is the two backlight partitions 101 including the left backlight partition 11 and the right backlight partition 12 shown in FIG. 1 as an example
  • FIG. 4 is the mini LED backlight provided by the embodiment of the application.
  • each row of light-emitting elements in the left backlight sub-region 11 and the right backlight sub-region 12 needs to take the first unit time to light up, then the staggered
  • the same row of light-emitting elements in the left backlight partition 11 and the right backlight partition 12 are driven to work simultaneously, that is, when the i-th row of light-emitting elements is supplied with power by the gate driver, the source driver first inputs the data signal to the left backlight partition 11, and then to the right
  • the backlight partition 12 inputs data signals, that is, the input timings of the data signals of the left backlight partition 11 and the right backlight partition 12 are staggered by a first unit duration.
  • the light emission of the mini LED backlight module is used.
  • the components are all lit, that is, the data signals input to the left backlight sub-region 11 and the right backlight sub-region 12 are both high potentials.
  • FIG. 6 is a schematic diagram of the timing of the second data signal of the mini LED backlight module provided by the embodiment of the present application, which is shown in combination with FIG. 5 and FIG. 6 .
  • each row of light-emitting elements in the first backlight sub-region 21, the second backlight sub-region 22 and the third backlight sub-region 23 takes a second unit time to light up, then drive the first backlight sub-region 21 and the second backlight sub-region 22 in turn. It works simultaneously with the light-emitting elements in the same row of the third backlight partition 23, that is, when the light-emitting elements in the i-th row are supplied with power by the gate driver, the source driver first inputs data signals to the first backlight partition 21, and then to the second backlight partition 22.
  • the mini LED The LED backlight module is divided into a number of backlight partitions 101. Otherwise, as shown in FIG. 4 and FIG. 6, in one frame of display period, each backlight partition 101 may have insufficient number of data signal pulses, resulting in some light-emitting elements cannot be The drive is turned on, therefore, k is generally not greater than 10, that is, the mini LED backlight module is divided into not more than 10 horizontally spliced backlight partitions 101 .
  • the driving circuit of the mini LED backlight module provided by the embodiment of the present application can reduce the amplitude and fluctuation of the backlight current.
  • the purpose of inputting data signals to the first to kth backlight partitions 101 is to reduce the current amplitude and fluctuation when a certain row of light-emitting elements of the mini LED backlight module are simultaneously lit.
  • the backlight sub-region 101 if a row of light-emitting elements does not need to be lit, that is, the data signal input to the backlight sub-region 101 is at a low level, the backlight current itself is relatively small at this time.
  • the drive circuit of the LED backlight module aims to reduce the current fluctuation of the overall backlight.
  • the backlight grayscale information can be determined according to the brightness signal. Therefore, in the driving circuit of the mini LED backlight module, the source driver is also used to determine the backlight grayscale information according to the brightness information. And according to the backlight grayscale information, the lighting time of each row of light-emitting elements in each backlight partition 101 is controlled, so that the backlight source provided by the mini LED backlight module reaches the backlight grayscale required by the backlight grayscale information.
  • each backlight partition 101 has the same area and shape.
  • each backlight sub-region 101 includes a plurality of backlight panels arranged horizontally and/or vertically. As shown in FIG. 1 , each backlight sub-region 101 consists of 4 backlight panels (each dotted box represents one backlight panel). Backlight panels) are spliced together, wherein, every two backlight panels are spliced horizontally, and then every two horizontally spliced backlight panels are spliced vertically to form each backlight partition 101; as shown in Figure 5, each backlight partition 101 consists of 2 backlight panels (each dotted line represents a backlight panel) vertically spliced.
  • each backlight panel is provided with a driving unit (not shown in the drawings) and a plurality of light-emitting elements, wherein the driving unit of each backlight panel is respectively connected with the plurality of light-emitting elements and the source driver, and the source
  • the pole driver controls the light-emitting duration and light-emitting brightness of the plurality of light-emitting elements through the driving unit.
  • the light-emitting elements of the mini LED backlight module generally use organic light-emitting diodes.
  • FIG. 7 is a schematic flowchart of a method for driving a mini LED backlight module provided by an embodiment of the present application. As shown in FIG. 7 , an embodiment of the present application further provides a mini LED backlight module.
  • the driving method of LED backlight module is applied to the above-mentioned driving circuit of mini LED backlight module.
  • the driving circuit includes a gate driver, a source driver and k horizontally spliced backlight partitions, and each backlight partition includes m rows *n columns of light-emitting elements; wherein, m, n and k are all positive integers; the driving method includes:
  • m scanning signals are provided according to a preset timing sequence, and m rows of light-emitting elements of the mini LED backlight module are sequentially scanned according to the m scanning signals;
  • step S2 input data signals to the 1st to kth backlight sub-regions in a staggered order, so that the i-th row of light-emitting elements of the 1st to k-th backlight sub-regions work simultaneously, specifically including:
  • Input a data signal to the first backlight sub-region to drive the n light-emitting elements in the i-th row of the first backlight sub-region to work simultaneously;
  • Input a data signal to the second backlight subregion to drive the n light-emitting elements of the i-th row of the second backlight subregion to work simultaneously;
  • the k backlight sub-areas 101 are sequentially input with data signals, so that the n light-emitting elements in the row of the first backlight sub-area 101 are simultaneously lit.
  • the n light-emitting elements in the row of the second backlight sub-area 101 are lit at the same time, and then the n light-emitting elements in the row of the third backlight sub-area 101 are lit at the same time, and so on, until the k-th backlight sub-area
  • the n light-emitting elements of the row of 101 are simultaneously lit. In this way, all light-emitting elements of the mini LED backlight module are lit.
  • step S2 until all the light-emitting elements in the mini LED backlight module are driven to be lit, the method further includes: determining the backlight grayscale information according to the brightness information, and controlling each backlight partition 101 according to the backlight grayscale information The length of time that each row of light-emitting elements is lit, so that the backlight provided by the mini LED backlight module reaches the backlight grayscale required by the backlight grayscale information.
  • an embodiment of the present application also provides a display device, the display device includes a mini LED backlight module, and the above-mentioned driving circuit for the mini LED backlight module, wherein the mini LED backlight module is The drive circuit of the LED backlight module is used to drive the mini LED backlight module to provide a backlight source for the display device.
  • the display device has the same structure and beneficial effects as the driving circuit of the mini LED backlight module.
  • the driving circuit of the LED backlight module has been described in detail, and will not be repeated here.
  • the mini The LED backlight module includes k horizontally spliced backlight partitions 101.
  • the drive circuit includes a gate driver and a source driver. During each frame display period, the gate driver provides a scan signal for each row of the mini LED backlight module to emit light.
  • the source driver sequentially drives the light-emitting elements of each horizontally spliced backlight sub-area 101 in the mini LED backlight module to work simultaneously according to the brightness information, that is, the source driver makes multiple backlight sub-areas 101
  • This row of light-emitting elements in the mini LED backlight module is lit at the same time or not at the same time, so that each row of light-emitting elements that originally need to work at the same time in the mini LED backlight module is divided into the row of light-emitting elements of multiple backlight partitions 101, avoiding the mini LED backlight module.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

本申请提供一种mini LED背光模组的驱动方法、驱动电路及显示装置，该mini LED背光模组将mini LED背光模组中原本需要同时工作的每行发光元件拆分为多个背光分区的该行发光元件分别同时工作，避免了mini LED背光模组中的每行发光元件同时被点亮时带来的背光电流波动过大的问题。

Description

Mini LED背光模组的驱动方法、驱动电路及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种mini LED背光模组的驱动方法、驱动电路及显示装置。
 背景技术
mini LED技术可以理解为LCD的全面升级版，mini LED的背光层在单位面积内可以容纳更多LED，从而大大提高背光源数量，因此可以进行区域亮度调节的设计，从而在个别区域实现关闭LED从而达到完全的黑色，不仅减小了功耗，而且由于单位面积上LED数量的增加，实现超高对比度和精细的动态分布，让亮场更亮，暗场更暗，从而使得显示效果更佳细致。
目前，图1为现有技术的mini LED背光模组的结构示意图，如图1所示，mini LED背光是通过多块灯板（每个虚线框为一个灯板）拼接而成的，每块灯板上分布阵列排布的有机发光二极管（LED），多块灯板虽然是采用分开独立扫描的方式进行驱动，但是，多块灯板在一帧显示时段内是同时点亮的，即mini LED背光的每行LED均同时进行工作，即可能会同时被点亮，这样会带来电流波动过大的问题，从而导致有机发光二极管寿命减少、噪声和电磁干扰的问题。
因此，有必要提出一种mini LED背光模组的驱动方法、驱动电路及显示装置，以解决mini LED背光工作时的电流波动较大的问题。
 技术问题
mini LED背光是通过多块灯板拼接而成的，每块灯板上分布阵列排布的LED，多块灯板虽然是采用分开独立扫描的方式进行驱动，但是，多块灯板在一帧显示时段内是同时点亮的，即mini LED背光的每行LED均同时进行工作，即可能会同时被点亮，这样会带来电流波动过大的问题，从而导致有机发光二极管寿命减少、噪声和电磁干扰的问题。
 技术解决方案
为了解决上述mini LED背光工作时的电流波动较大的问题，本申请实施例提供一种mini LED背光模组的驱动方法、驱动电路及显示装置。
第一方面，本申请实施例提供一种mini LED背光模组的驱动方法，所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列阵列排布的发光元件，m、n和k均为正整数；所述驱动方法包括：
在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m。
在一些实施例中，所述依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，具体包括：
向第1个所述背光分区输入数据信号，以驱动第1个所述背光分区的第i行的n个所述发光元件同时工作；
向第2个所述背光分区输入数据信号，以驱动第2个所述背光分区的第i行的n个所述发光元件同时工作；
以此类推，直至向第k个所述背光分区输入数据信号，以驱动第k个所述背光分区的第i行的n个所述发光元件同时工作。
在一些实施例中，被连续驱动的两个所述背光分区的第i行所述发光元件的开始点亮时刻间隔一个单位时长，其中，所述单位时长为每个所述背光分区的每行所述发光元件被点亮的耗时。
在一些实施例中，所述直至驱动所述mini LED背光模组中的全部所述发光元件均被点亮，还包括：
根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
在一些实施例中，每个所述背光分区的面积和形状均相同。
第二方面，本申请实施例提供一种ini LED背光模组的驱动电路，所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列发光元件，m、n和k均为正整数；所述驱动电路包括栅极驱动器和源极驱动器，其中：
所述栅极驱动器用于在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
所述源极驱动器用于在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m。
在一些实施例中，每个所述背光分区的面积和形状均相同。
在一些实施例中，每个所述背光灯板的面积和形状均相同。
在一些实施例中，每个所述背光灯板包括相同数量的所述发光元件。
在一些实施例中，所述源极驱动器还用于，根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
在一些实施例中，每个所述背光分区包括多个水平和/或垂直拼接设置的背光灯板，每个所述背光灯板上设置有驱动单元和多个所述发光元件，其中，所述驱动单元分别与多个所述发光元件和所述源极驱动器连接，所述源极驱动器通过所述驱动单元控制多个所述发光元件的发光时长和发光亮度。
在一些实施例中，所述发光元件为有机发光二极管。
第三方面，本申请实施例还提供一种显示装置，该显示装置包括mini LED背光模组以及所述mini LED背光模组的驱动电路，所述mini LED背光模组的驱动电路用于驱动所述mini LED背光模组为所述显示装置提供背光源；
所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列发光元件，m、n和k均为正整数；所述驱动电路包括栅极驱动器和源极驱动器，其中：
所述栅极驱动器用于在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
所述源极驱动器用于在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m，以及，根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
在一些实施例中，每个所述背光分区包括多个水平和/或垂直拼接设置的背光灯板，每个所述背光灯板上设置有驱动单元和多个所述发光元件，其中，所述驱动单元分别与多个所述发光元件和所述源极驱动器连接，所述源极驱动器通过所述驱动单元控制多个所述发光元件的发光时长和发光亮度。
在一些实施例中，所述发光元件为有机发光二极管。
在一些实施例中，每个所述背光分区的面积和形状均相同。
在一些实施例中，每个所述背光灯板的面积和形状均相同。
在一些实施例中，每个所述背光灯板包括相同数量的所述发光元件。
 有益效果
本申请实施例提供的mini LED背光模组的驱动方法、驱动电路及显示装置，该mini LED背光模组包括k个水平拼接的背光分区，该驱动电路包括栅极驱动器和源极驱动器，在每帧显示时段内，栅极驱动器每提供一个扫描信号为mini LED背光模组的一行发光元件提供工作电能时，源极驱动器就根据亮度信息依次驱动mini LED背光模组中每个水平拼接的背光分区的该行发光元件分别同时工作，也即，源极驱动器分别使多个背光分区中的该行发光元件被同时点亮或同时不点亮，这样将mini LED背光模组中原本需要同时工作的每行发光元件拆分为多个背光分区的该行发光元件分别同时工作，避免了mini LED背光模组中的每行发光元件同时被点亮时带来的背光电流波动过大的问题，以此防止背光电流过大导致的发光元件寿命过短，以及噪声和电磁干扰的问题。
 附图说明
图1为现有技术的mini LED背光模组的结构示意图。
图2为现有技术的mini LED背光模组的数据信号的时序示意图。
图3为本申请实施例提供的mini LED背光模组的驱动电路的结构示意图。
图4为本申请实施例提供的mini LED背光模组的第一种数据信号的时序示意图。
图5为现有技术的mini LED背光模组的另一种结构示意图。
图6为本申请实施例提供的mini LED背光模组的第二种数据信号的时序示意图。
图7为本申请实施例提供的mini LED背光模组的驱动方法的流程示意图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
如图1所示，以mini LED背光模组包括左、右两个背光分区为例，在一帧显示时间内，左背光分区11和右背光分区12被同时点亮，即左、右背光同一行的LED同时工作，图2为现有技术的mini LED背光模组的数据信号的时序示意图，如图2所示，当左、右背光同一行的LED被扫描信号提供电能时，数据信号同时向左背光分区11和右背光分区12输入数据信号，由此使左背光分区11和右背光分区12的同一行LED被同时打开，这样，每次点亮该mini LED背光模组的一行LED时，会给背光电流带来较大的波动，在同时向左背光分区11和右背光分区12输入数据信号时，背光电流在高电流和低电流之间切换，即背光电流产生较大的波动，这会对mini LED背光模组的LED产生较大的损害，导致LED寿命过短，同时还会带来噪声和电磁干扰的问题。
针对上述问题，本申请实施例提供一种mini LED背光模组的驱动电路，图3为本申请实施例提供的mini LED背光模组的驱动电路的结构示意图，如图3所示，该mini LED背光模组包括k个水平拼接的背光分区101，每个背光分区101包括m行*n列发光元件；其中，m、n和k均为正整数。该驱动电路包括栅极驱动器和源极驱动器，其中：
栅极驱动器用于在每帧显示时段内依据预设时序提供m个扫描信号，并依据m个扫描信号依次扫描mini LED背光模组的m行发光元件；
源极驱动器用于在每帧显示时段内，当mini LED背光模组的第i行发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动mini LED背光模组中的全部发光元件进行工作；其中，i为正整数，1≤i ≤m。
具体地，在每帧显示时段内，首先由栅极驱动器依据预设时序提供m个扫描信号来驱动mini LED背光模组的m行发光元件，即依次通过每个扫描信号驱动对应的一行发光元件，例如，当第i个扫描信号驱动第i行发光元件时，由源极驱动器根据亮度信息来依次错开向第1个至第k个背光分区输入数据信号，分别使第1个至第k个背光分区101的第i行的n个发光元件同时工作，直至使mini LED背光模组中的全部发光元件进行工作。需要说明的是，n个发光元件同时工作是指n个发光元件同时被点亮，或n个发光元件同时不被点亮；亮度信号包括每个背光分区101中m行发光元件分别需要被点亮和不需要被点亮的信息。
这样，本申请实施例提供的mini LED背光模组的驱动电路，当栅极驱动器为mini LED背光模组的某一行发光元件提供电能时，由于源极驱动器分别向第1个至第k个背光分区101输入数据信号，从而依次驱动水平拼接的第1个至第k个背光分区101的该行发光元件分别同时工作，因此相比于现有技术的通过源极驱动器同时驱动mini LED背光模组的每行发光元件同时工作，该mini LED背光模组的驱动电路能减小电流的幅值和波动，由此防止mini LED背光模组的同一行发光元件同时被点亮而导致的背光电流过大的问题。
值得注意的是，该mini LED背光模组的驱动电路沿用了栅极驱动器输出的扫描信号的原有时序，仅更改了源极驱动器输出的数据信号的时序，也就是说，该mini LED背光模组的驱动电路可以不对栅极驱动信号输出的扫描信号的时序进行修改，而只是更改源极驱动器输出的数据信号的时序，这样能够简化该mini LED背光模组的驱动电路的工作流程。
可以理解的是，被连续驱动的两个背光分区101的第i行发光元件的开始点亮时刻间隔一个单位时长，其中，单位时长为每个背光分区101的每行发光元件被点亮的耗时。
例如，以k=2，即mini LED背光模组为图1所示的包括左背光分区11和右背光分区12这两个背光分区101为例，图4为本申请实施例提供的mini LED背光模组的第一种数据信号的时序示意图，结合图1和图4所示，假设左背光分区11和右背光分区12中的每行发光元件被点亮需要耗时第一单位时长，则交错驱动左背光分区11和右背光分区12中的同一行发光元件同时工作，即当第i行发光元件被栅极驱动器提供电能时，源极驱动器先向左背光分区11输入数据信号，再向右背光分区12输入数据信号，也就是说，左背光分区11与右背光分区12的数据信号的输入时刻错开一个第一单位时长，需要说明的是，图4中是以mini LED背光模组的发光元件被全部点亮，即向左背光分区11和右背光分区12输入的数据信号均为高电位为例。
又例如，图5为现有技术的mini LED背光模组的另一种结构示意图，如图5所示，以k=3，即mini LED背光模组包括分布于左、中、右的第一背光分区21、第二背光分区22和第三背光分区23为例，图6为本申请实施例提供的mini LED背光模组的第二种数据信号的时序示意图，结合图5和图6所示，假设第一背光分区21、第二背光分区22和第三背光分区23中的每行发光元件被点亮需要耗时第二单位时长，则依次驱动第一背光分区21、第二背光分区22和第三背光分区23的同一行发光元件同时工作，即当第i行发光元件被栅极驱动器提供电能时，源极驱动器先向第一背光分区21输入数据信号，再向第二背光分区22输入数据信号，然后向第三背光分区23输入数据信号，也就是说，第一背光分区21、第二背光分区22和第三背光分区23的数据信号的输入时刻依次错开一个第二单位时长，需要说明的是，图6也是以mini LED背光模组的发光元件被全部点亮，即向第一背光分区21、第二背光分区22和第三背光分区23输入的数据信号均为高电位为例。
需要说明的是，为了在一帧时间内驱动mini LED背光模组中的所有发光元件进行工作，一般不会将mini LED背光模组划分为很多个背光分区101，否则如图4和图6所示，在一帧显示时段内，每个背光分区101可能存在数据信号的脉冲个数不够，导致部分发光元件无法被驱动点亮，因此，k一般不大于10，也即，将mini LED背光模组划分为不大于10个水平拼接的背光分区101。
经过实际试验可知，本申请实施例提供的mini LED背光模组的驱动电路能减小背光电流的幅值和波动。
需要强调的是，分别向第1个至第k个背光分区101输入数据信号，是为了减小mini LED背光模组的某行发光元件同时被点亮时的电流幅值和波动，针对某个背光分区101而言，如果某行发光元件无需被点亮，即此时向该背光分区101输入的数据信号为低电平，则此时背光电流本身就较小。而本申请实施例提供的mini LED背光模组的驱动电路，旨在减小的是总体背光的电流波动。
基于上述实施例，基于伽马曲线，可以根据亮度信号能确定背光灰阶信息，因此在该mini LED背光模组的驱动电路中，源极驱动器还用于，根据亮度信息确定背光灰阶信息，并根据背光灰阶信息控制每个背光分区101的各行发光元件被点亮的时长，以使得mini LED背光模组提供的背光源达到背光灰阶信息所要求的背光灰阶。
在一些实施例中，每个背光分区101的面积和形状均相同。
在一些实施例中，每个背光分区101包括多个水平和/或垂直拼接设置的背光灯板，如图1所示，每个背光分区101由4个背光灯板（每个虚线框表示一个背光灯板）拼接而成，其中，每2个背光灯板水平拼接，然后再将每2个水平拼接的背光灯板垂直拼接形成每个背光分区101；如图5所示，每个背光分区101由2个背光灯板（每个虚线表示一个背光灯板）垂直拼接而成。
进一步地，每个背光灯板上设置有驱动单元（附图中未示出）和多个发光元件，其中，每个背光灯板的驱动单元分别与多个发光元件和源极驱动器连接，源极驱动器通过驱动单元控制多个发光元件的发光时长和发光亮度。
需要说明的是，该mini LED背光模组的发光元件一般采用有机发光二极管。
图7为本申请实施例提供的mini LED背光模组的驱动方法的流程示意图，如图7所示，本申请实施例还提供一种mini LED背光模组的驱动方法，应用于如上所述的mini LED背光模组的驱动电路，该驱动电路包括栅极驱动器，源极驱动器和k个水平拼接的背光分区，每个背光分区包括m行*n列发光元件；其中，m、n和k均为正整数；该驱动方法包括：
S1、在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个扫描信号依次扫描mini LED背光模组的m行发光元件；
S2、在每帧显示时段内，当mini LED背光模组的第i行发光元件被扫描时，根据亮度信息依次错开向第1个至第k个背光分区输入数据信号，分别使第1个至第k个背光分区的第i行发光元件同时工作，直至驱动mini LED背光模组中的全部发光元件进行工作；其中，i为正整数，且1≤i ≤m。
基于上述实施例，步骤S2中，依次错开向第1个至第k个背光分区输入数据信号，分别使第1个至第k个背光分区的第i行发光元件同时工作，具体包括：
向第1个背光分区输入数据信号，以驱动第1个背光分区的第i行的n个发光元件同时工作；
向第2个背光分区输入数据信号，以驱动第2个背光分区的第i行的n个发光元件同时工作；
以此类推，直至向第k个背光分区输入数据信号，以驱动第k个背光分区的第i行的n个发光元件同时工作。
也就是说，当mini LED背光模组的某一行发光元件被扫描时，k个背光分区101被依次输入数据信号，使得第1个背光分区101的该行的n个发光元件同时被点亮之后，第2个背光分区101的该行的n个发光元件同时被点亮，然后第3个背光分区101的该行的n个发光元件同时被点亮，以此类推，直至第k个背光分区101的该行的n个发光元件同时被点亮。这样，mini LED背光模组的所有发光元件均被点亮。
基于上述实施例，步骤S2中，直至驱动mini LED背光模组中的全部发光元件均被点亮，还包括：根据亮度信息确定背光灰阶信息，并根据背光灰阶信息控制每个背光分区101的各行发光元件被点亮的时长，以使得mini LED背光模组提供的背光源达到背光灰阶信息所要求的背光灰阶。
基于同一发明构思，本申请实施例还提供一种显示装置，该显示装置包括mini LED背光模组，以及如上所述的mini LED背光模组的驱动电路，其中，mini LED背光模组的驱动电路用于驱动mini LED背光模组为显示装置提供背光源。该显示装置与该mini LED背光模组的驱动电路具有相同的结构和有益效果，由于上述各实施例已经对该mini LED背光模组的驱动电路进行了详细的描述，此处不再赘述。
本申请实施例提供的mini LED背光模组的驱动方法、驱动电路及显示装置，该mini LED背光模组包括k个水平拼接的背光分区101，该驱动电路包括栅极驱动器和源极驱动器，在每帧显示时段内，栅极驱动器每提供一个扫描信号为mini LED背光模组的一行发光元件提供工作电能时，源极驱动器就根据亮度信息依次驱动mini LED背光模组中每个水平拼接的背光分区101的该行发光元件同时工作，也即，源极驱动器分别使多个背光分区101中的该行发光元件被同时点亮或同时不点亮，这样将mini LED背光模组中原本需要同时工作的每行发光元件拆分为多个背光分区101的该行发光元件，避免了mini LED背光模组中的该行发光元件同时被点亮时带来的背光电流波动过大的问题，以此防止背光电流过大导致的发光元件寿命过短，以及噪声和电磁干扰的问题。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (18)

  1. 一种mini LED背光模组的驱动方法，其中，所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列阵列排布的发光元件，m、n和k均为正整数；所述驱动方法包括：
    在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
    在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m。
  2. 如权利要求1所述的mini LED背光模组的驱动方法，其中，所述依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，具体包括：
    向第1个所述背光分区输入数据信号，以驱动第1个所述背光分区的第i行的n个所述发光元件同时工作；
    向第2个所述背光分区输入数据信号，以驱动第2个所述背光分区的第i行的n个所述发光元件同时工作；
    以此类推，直至向第k个所述背光分区输入数据信号，以驱动第k个所述背光分区的第i行的n个所述发光元件同时工作。
  3. 如权利要求1所述的mini LED背光模组的驱动方法，其中，被连续驱动的两个所述背光分区的第i行所述发光元件的开始点亮时刻间隔一个单位时长，其中，所述单位时长为每个所述背光分区的每行所述发光元件被点亮的耗时。
  4. 如权利要求1所述的mini LED背光模组的驱动方法，其中，所述直至驱动所述mini LED背光模组中的全部所述发光元件进行工作，还包括：
    根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
  5. 如权利要求1所述的mini LED背光模组的驱动方法，其中，每个所述背光分区的面积和形状均相同。
  6. 一种mini LED背光模组的驱动电路，其中，所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列发光元件，m、n和k均为正整数；所述驱动电路包括栅极驱动器和源极驱动器，其中：
    所述栅极驱动器用于在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
    所述源极驱动器用于在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m。
  7. 如权利要求6所述的mini LED背光模组的驱动电路，其中，所述源极驱动器还用于，根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
  8. 如权利要求6所述的mini LED背光模组的驱动电路，其中，每个所述背光分区包括多个水平和/或垂直拼接设置的背光灯板，每个所述背光灯板上设置有驱动单元和多个所述发光元件，其中，所述驱动单元分别与多个所述发光元件和所述源极驱动器连接，所述源极驱动器通过所述驱动单元控制多个所述发光元件的发光时长和发光亮度。
  9. 如权利要求6所述的mini LED背光模组的驱动电路，其中，所述发光元件为有机发光二极管。
  10. 如权利要求6所述的mini LED背光模组的驱动电路，其中，每个所述背光分区的面积和形状均相同。
  11. 如权利要求8所述的mini LED背光模组的驱动电路，其中，每个所述背光灯板的面积和形状均相同。
  12. 如权利要求8所述的mini LED背光模组的驱动电路，其中，每个所述背光灯板包括相同数量的所述发光元件。
  13. 一种显示装置，包括mini LED背光模组，以及所述mini LED背光模组的驱动电路，所述mini LED背光模组的驱动电路用于驱动所述mini LED背光模组为所述显示装置提供背光源；
    所述mini LED背光模组包括k个水平拼接的背光分区，每个所述背光分区包括m行*n列发光元件，m、n和k均为正整数；所述驱动电路包括栅极驱动器和源极驱动器，其中：
    所述栅极驱动器用于在每帧显示时段内，依据预设时序提供m个扫描信号，并依据m个所述扫描信号依次扫描所述mini LED背光模组的m行所述发光元件；
    所述源极驱动器用于在每帧显示时段内，当所述mini LED背光模组的第i行所述发光元件被扫描时，根据亮度信息依次错开向第1个至第k个所述背光分区输入数据信号，分别使第1个至第k个所述背光分区的第i行所述发光元件同时工作，直至驱动所述mini LED背光模组中的全部所述发光元件进行工作；其中，i为正整数，且1≤i ≤m，以及，根据所述亮度信息确定背光灰阶信息，并根据所述背光灰阶信息控制每个所述背光分区的各行所述发光元件被点亮的时长，以使得所述mini LED背光模组提供的背光源达到所述背光灰阶信息所要求的背光灰阶。
  14. 如权利要求13所述的显示装置，其中，每个所述背光分区包括多个水平和/或垂直拼接设置的背光灯板，每个所述背光灯板上设置有驱动单元和多个所述发光元件，其中，所述驱动单元分别与多个所述发光元件和所述源极驱动器连接，所述源极驱动器通过所述驱动单元控制多个所述发光元件的发光时长和发光亮度。
  15. 如权利要求13所述的显示装置，其中，所述发光元件为有机发光二极管。
  16. 如权利要求13所述的显示装置，其中，每个所述背光分区的面积和形状均相同。
  17. 如权利要求14所述的显示装置，其中，每个所述背光灯板的面积和形状均相同。
  18. 如权利要求14所述的显示装置，其中，每个所述背光灯板包括相同数量的所述发光元件。
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