CN111968586A - Backlight source, driving method thereof, storage medium and display panel - Google Patents
Backlight source, driving method thereof, storage medium and display panel Download PDFInfo
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- CN111968586A CN111968586A CN202010928723.3A CN202010928723A CN111968586A CN 111968586 A CN111968586 A CN 111968586A CN 202010928723 A CN202010928723 A CN 202010928723A CN 111968586 A CN111968586 A CN 111968586A
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- 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
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Abstract
The invention provides a backlight source, a driving method thereof, a storage medium and a display panel. The backlight source driving method comprises the following steps that the backlight source comprises a plurality of light-emitting elements which are arranged in an array mode, n lines of light-emitting elements form a group, the light-emitting elements are driven to emit light group by group, n is larger than 1 and smaller than the total line number of the light-emitting element array, n is an integer, and the driving method comprises the following steps: before the first frame picture to be switched is switched, writing the data signal of the first frame picture to be switched into a second data storage area; when the first frame to be switched is switched, the data signal in the second data storage area is read when the last group of light-emitting elements of the frame before the first frame to be switched is scanned and turned on. The backlight source driving method can effectively solve the problem of incomplete display of a frame of picture during frame picture data switching, avoid poor display, effectively improve the data transmission rate, meet the data transmission rate requirement during frame picture switching, and further realize good frame picture switching.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a backlight source, a driving method thereof, a storage medium and a display panel.
Background
With the development of display technology, the number of items using the Mini LED array as the backlight of the display panel is gradually increased, but the problem of abnormal display commonly exists when the items switch different frame image data signals at any time.
The method specifically comprises the following steps: the reason why the data signal written in the frame is supposed to be displayed in one frame, but when the actual frame is switched and the previous frame is not displayed, the next frame is displayed is as follows: the last line Mini LED which is not displayed in the previous frame is written with the switched data signal of the next frame, so that the previous frame is not completely displayed.
Disclosure of Invention
The invention provides a backlight source, a driving method thereof, a storage medium and a display panel, aiming at the problem of incomplete frame picture display in the backlight source frame picture switching process. The backlight source driving method can effectively solve the problem of incomplete display of a frame of picture during frame picture data switching, avoid poor display, effectively improve the data transmission rate, meet the data transmission rate requirement during frame picture switching, and further realize good frame picture switching.
The invention provides a backlight source driving method, wherein the backlight source comprises a plurality of light-emitting elements which are arranged in an array, n rows of the light-emitting elements form a group, the light-emitting elements are driven to emit light group by group, n is more than 1 and less than the total row number of the light-emitting element array, and n is an integer, the driving method comprises the following steps:
before the first frame picture to be switched is switched, writing the data signal of the first frame picture to be switched into a second data storage area;
when the first frame picture to be switched is switched, reading the data signal in the second data storage area when the last group of the luminous elements of the frame picture before the first frame picture to be switched is scanned and turned on.
Optionally, before the first frame picture is displayed, writing the data signal of the first frame picture into a first data storage area;
the first frame is a frame before the first frame to be switched.
Optionally, before switching a second frame to be switched, writing a data signal of the second frame to be switched into the first data storage area;
when the second frame picture to be switched is switched, reading the data signals in the first data storage area when the last group of light-emitting elements of the previous frame picture of the second frame picture to be switched is scanned and turned on;
the switching time of the second frame picture to be switched is after the switching time of the first frame picture to be switched.
Optionally, when a frame before the first frame to be switched is scanned and before a last group of the light emitting elements of the frame before the first frame is scanned and turned on, writing the data signal of the first frame to be switched into the second data storage area;
and writing the data signal of the second frame picture to be switched into the first data storage area when the previous frame picture of the second frame picture to be switched is scanned and before the last group of light-emitting elements of the previous frame picture are scanned and turned on.
Optionally, the frame picture starts to be displayed after the scanning start signal of the frame picture delays for a set time;
the set time includes a time for half of the frame scanning.
Optionally, the data signals of one frame of picture are the same; the data signal comprises the current magnitude for driving the light-emitting element to emit light and the on-time of the current.
The invention also provides a backlight source, which comprises a plurality of light-emitting elements, wherein the light-emitting elements are arranged in an array, n rows of the light-emitting elements form a group, n is more than 1 and less than the total row number of the light-emitting element array, and n is an integer; the LED lamp also comprises a driving module, the driving module comprises a driving unit, the driving unit is respectively connected with each group of the light-emitting elements and is used for driving the light-emitting elements to emit light group by group,
the driving module further comprises a second data storage area, wherein the second data storage area is connected with the driving unit and is used for storing the data signal of the first frame picture to be switched written in the second data storage area before the first frame picture to be switched is switched;
the driving unit is used for reading the data signal of the first frame picture to be switched in the second data storage area when the last group of light-emitting elements of the frame picture before the first frame picture to be switched is scanned and turned on when the first frame picture to be switched is switched.
Optionally, the driving module further comprises a first data storage area, and the first data storage area is connected with the driving unit;
the first data storage area is used for storing the data signal of the second frame picture to be switched written in the first data storage area before the second frame picture to be switched is switched;
the driving unit is further configured to read a data signal of the second to-be-switched frame picture in the first data storage area when the last group of the light emitting elements of the frame picture before the second to-be-switched frame picture is scanned and turned on when the second to-be-switched frame picture is switched;
the switching time of the second frame picture to be switched is after the switching time of the first frame picture to be switched.
The present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described backlight driving method.
The invention also provides a display panel comprising the backlight source.
The invention has the beneficial effects that: the backlight source driving method provided by the invention writes the data signal of the first frame picture to be switched into the second data storage area before the first frame picture to be switched is switched; when the first frame picture to be switched is switched, the data signal in the second data storage area is read when the last group of light-emitting elements of the frame picture before the first frame picture to be switched is scanned and turned on, the data signal of the first frame picture to be switched transmitted by the SPI bus can be stored in the second data storage area in advance when the backlight source is driven, and the data signal of the first frame picture to be switched is directly read from the second data storage area by the driving chip during switching, because the speed of reading the data from the second data storage area by the driving chip is far higher than the speed of directly transmitting the data to the driving chip by the SPI bus, and the speed requirement of reading the data from the second data storage area by the driving chip on the data transmitted by the SPI bus is also low, the driving method of the backlight source in the embodiment can effectively solve the problem that the display of one frame picture is incomplete when the frame picture data is switched, the display failure is avoided, the data transmission rate can be effectively improved, the data transmission rate requirement during frame picture switching is met, and therefore good frame picture switching is achieved.
According to the backlight source provided by the invention, the first data storage area and the second data storage area are arranged in the driving module, the previous frame picture to be switched can be stored in the second data storage area, the subsequent frame picture to be switched is stored in the first data storage area, and the data in the two data storage areas are not interfered with each other, so that the problem that the display of one frame picture is incomplete when the frame picture data is switched is effectively solved, the display is not good, the data transmission rate can be effectively improved, the data transmission rate requirement when the frame picture is switched is met, and the good switching of the frame picture is realized.
By adopting the backlight source, the display panel provided by the invention improves the display defects of the display panel during the frame data switching of the backlight source, and improves the display quality of the display panel.
Drawings
Fig. 1 is a schematic view of a current waveform of a frame data signal of a frame picture that does not switch frame pictures during a backlight source lighting process in the prior art;
FIG. 2 is a schematic diagram of a current waveform of a frame data signal for switching a frame during a backlight source lighting process according to the prior art;
fig. 3 is a flowchart of a backlight driving method according to an embodiment of the present invention;
fig. 4 is a schematic view of a current waveform of a frame data signal for switching a frame in a backlight driving method according to an embodiment of the present invention;
fig. 5 is a schematic view of a driving principle of a backlight according to an embodiment of the present invention.
Wherein the reference numerals are:
1. a light emitting element; 2. a drive module; 21. a drive unit; RAM1, a first data storage area; RAM2, a second data storage area.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, a backlight, a driving method thereof, a storage medium, and a display panel according to the present invention are described in further detail below with reference to the accompanying drawings and the detailed description.
In the prior art, the display panel usually adopts a Mini LED array as a backlight source, and during display, the backlight sources with different brightness are realized by switching frame pictures lighted by the backlight source, so as to provide the backlight sources with different brightness for the display of the display panel.
In the disclosed technology, when the luminance of the backlight is not changed during display, the frame screen on which the backlight is lit does not need to be switched, that is, the data signal of the frame screen that is scrolled is not changed during lighting of the backlight. Of frame picturesThe data signal is a current waveform, and the current waveforms of different frame pictures are the same when the data signal of the frame picture is unchanged. As shown in FIG. 1, 8 data gate circuits (MUX1-MUX8) are used to gate and light Mini LEDs in a Mini LED array row by row, 1 data gate circuit is used to gate and light three rows of Mini LEDs, and frame data signal I is not switched when the frame is scrolledledThe 1 st data-gate circuit (MUX1) to the 8 th data-gate circuit (MUX8) are turned on one by one, VSYC is a scan-on signal for a frame, and the frame starts to be displayed after the scan-on signal for the frame is delayed by a set time.
In the process of lighting the backlight, when the backlight is switched to different frame data signals at any time, a new frame data signal is written into the previous frame data signal when the number of lines of the previous frame is not completely displayed, as shown in fig. 2, the new frame data signal is written into the 7 th data gate circuit (MUX7) and the 8 th data gate circuit (MUX8) of the previous frame, that is, after the frame data signal is switched, the brightness does not change from the 1 st data gate circuit (MUX1) of the new frame, and at this time, the display of the frame is incomplete. If the previous frame is a black frame and the client wants to switch the next frame to a white frame, the backlight source may have a black-to-white display effect, resulting in serious defects. Wherein, MOSI is a frame writing control signal.
To solve the problem of incomplete display of a frame of picture when the backlight source is switched to different frame picture data signals at any time, the current solution is generally to control the write time nodes of the different frame picture data signals, so that the frame picture data signal to be switched is transmitted after the 8 th data gating circuit of the previous frame picture is turned on, and the data signals of two data gating circuits in the frame picture data signal must be transmitted before the 1 st data gating circuit of the next frame picture is turned on. The frame image data signal of the backlight source is directly transmitted to the driving chip through the SPI, and the driving chip receives the frame image data signal and drives and lights the backlight source. The above solution has high requirement for the transmission rate of the SPI (bus), and it is difficult for a general device to achieve the required rate.
The embodiment of the invention provides a backlight source driving method, wherein the backlight source comprises a plurality of light-emitting elements which are arranged in an array, n rows of light-emitting elements form a group, the light-emitting elements are driven to emit light group by group, wherein n is more than 1, n is less than the total row number of the light-emitting element array, and n is an integer, and the driving method comprises the following steps: as shown in fig. 3 and 4, step S2: before the first frame picture to be switched, the data signal I of the first frame picture to be switched is switchedledWrite to the second data storage RAM 2; when the first frame picture to be switched is switched, the data signals in the second data storage area RAM2 are read when the last group of light emitting elements of the frame picture preceding the first frame picture to be switched is scan-on.
In this embodiment, the light emitting element is a Mini LED, and different light emitting luminances of the Mini LED are controlled by controlling different durations of the same magnitude of current. However, the light emitting element is not limited to the Mini LED, and may be an LED, a Micro LED, an OLED, or the like. The first frame to be switched refers to the frame switched for the first time, and the data signal I of the frameledThe current signals are current signals, the current of the first frame to be switched is the same as that of the previous frame, but the current is switched in for different time lengths.
In the method for driving the backlight source in this embodiment, the data signal I of the first frame picture to be switched is generated before the first frame picture to be switched is switchedledWrite to the second data storage RAM 2; when the first frame picture to be switched is switched, the data signal in the second data storage area RAM2 is read when the last group of light-emitting elements of the frame picture before the first frame picture to be switched is scanned and turned on, and the data signal I of the first frame picture to be switched, which is transmitted by the SPI bus first, can be driven by the backlight sourceledPre-stored in the second data storage RAM2, and driven by the driver when switchingThe moving chip directly reads the data signal I of the first frame picture to be switched from the second data storage RAM2ledBecause the speed of the drive chip reading data from the second data storage area RAM2 is far higher than the speed of the SPI bus directly transmitting data to the drive chip, and the speed requirement of the drive chip reading data from the second data storage area RAM2 on the SPI bus data transmission is also low, the drive method of the backlight in this embodiment can effectively solve the problem of incomplete display of a frame of picture occurring when frame picture data is switched, avoid display defects, and effectively improve the data transmission rate, meet the data transmission rate requirement when frame pictures are switched, thereby realizing good switching of the frame pictures.
In this embodiment, step S1 is further included before step S2: before the display of the first frame picture, the data signal of the first frame picture is written into the first data storage area RAM 1; the first frame is the frame before the first frame to be switched.
The first frame image is a first frame image for lighting the backlight source, the first frame image is rolled and scanned before the first frame image to be switched is switched to light the backlight source, and before the first frame image to be switched is switched, the frame image data signal is not changed in the rolling scanning process of the first frame image, so that the operation of switching the image is not required to be executed. By writing the data signal of the first frame picture into the first data storage area RAM1, the data transmission rate of the first frame picture can be increased, and the data transmission rate requirement of the frame picture before the first frame picture to be switched is satisfied.
In this embodiment, step S3 is further included after step S2: before the second frame to be switched is switched, the data signal I of the second frame to be switched is switchedledWrite to the first data storage area RAM 1; when the second frame to be switched is switched, reading the data signals in the first data storage area RAM1 when the last group of light-emitting elements of the previous frame of the second frame to be switched is scanned and turned on; switching time HT of second frame to be switchedbAt the switching time HT of the first frame to be switchedaAnd then.
When the second to-be-switched frame picture data written into the first data storage area RAM1 later can overwrite the first frame picture data written into the first data storage area RAM1 earlier, that is, the second to-be-switched picture is switched, the data signal of the second to-be-switched frame picture is read from the first data storage area RAM 1.
In this embodiment, the first data storage area RAM1 and the second data storage area RAM2 are both Random Access Memories (RAMs), and they do not interfere with each other in the data accessing process. The random access memory is readable and writable, and subsequently written data may overwrite previously written data.
In the driving process of the backlight source, a plurality of frames to be switched subsequently can be switched circularly according to the switching method of the first frame to be switched and the second frame to be switched in the steps S1-S3, and the subsequent first frame to be switched and the subsequent second frame to be switched which need to be switched successively are respectively written into the second data storage area RAM2 and the first data storage area RAM1 in advance, so that the problem of incomplete display of one frame of picture during data switching of the frame pictures can be effectively solved, poor display is avoided, the data transmission rate can be effectively improved, the requirement of the data transmission rate during switching of the frame pictures is met, and good switching of the frame pictures is realized.
Preferably, the data signal I of the first frame to be switched is applied when the frame before the first frame is scanned and before the last group of light-emitting devices in the frame before the first frame is scanned and turned onledWrite to the second data storage RAM 2; when the frame before the second frame to be switched is scanned and before the last group of light-emitting elements in the frame before the frame is scanned, the data signal I of the second frame to be switched is transmittedledTo the first data storage area RAM 1. Therefore, the frame data to be switched is written into the storage area when the previous frame before the frame is switched is scanned, so that the phenomenon that the frame data to be switched written into the second data storage area RAM2 and the first data storage area RAM1 in advance forms false coverage on the original data in the storage area can be avoided, and the accuracy of backlight source driving is ensured.
As shown in fig. 3, the light emitting elements in the light emitting element array are strobed and lit group by group using 8 data strobe circuits MUX, and the 1 st data strobe circuit MUX1 through the 8 th data strobe circuit MUX8 are turned on one by one. For example: if the nth frame is the first frame to be switched, during scanning of the nth-1 frame and before the scanning of the last group of light-emitting elements of the nth-1 frame is turned on, i.e., before the 8 th data gating circuit MUX8 is turned on, under the control of the write control signal MOSI, the SPI bus writes the nth frame into the second data storage area RAM2 when the 5 th data gating circuit MUX5 of the nth-1 frame is turned on; and when the last group of light emitting elements of the picture of the (N-1) th frame is scanned and turned on, i.e., the 8 th data gating circuit MUX8 is turned on, the driving chip reads the data signals in the second data storage area RAM 2.
Optionally, the scan-on signal VSYC of the frame is delayed by a set time tdelayThe subsequent frame begins to display; the set time tdelayIncluding half the time of the frame picture scan. The set time t isdelayThe time is not limited to the half time of the frame scan, but may be less than the half time of the frame scan or more than the half time of the frame scan, but the set time tdelayLess than the scanning time of one frame of picture. The set time tdelayAccording to the specific display mode.
Optionally, the data signals of one frame of picture are the same; the data signal includes the magnitude of the current for driving the light emitting element to emit light and the on-time of the current. I.e. the data signals of the same frame of picture are identical. When the data signal of one frame is different from the data signal of the previous frame, the frame needs to be switched. If the data signal of one frame of picture is the same as the data signal of the previous frame of picture, the frame of picture does not need to be switched, and the driving chip can read the data signal in the current data storage area all the time to drive.
The backlight source driving method comprises the steps of writing a data signal of a first frame picture to be switched into a second data storage area before the first frame picture to be switched is switched; when the first frame picture to be switched is switched, the data signal in the second data storage area is read when the last group of light-emitting elements of the frame picture before the first frame picture to be switched is scanned and turned on, the data signal of the first frame picture to be switched transmitted by the SPI bus can be stored in the second data storage area in advance when the backlight source is driven, and the data signal of the first frame picture to be switched is directly read from the second data storage area by the driving chip during switching, because the speed of reading the data from the second data storage area by the driving chip is far higher than the speed of directly transmitting the data to the driving chip by the SPI bus, and the speed requirement of reading the data from the second data storage area by the driving chip on the data transmitted by the SPI bus is also low, the driving method of the backlight source in the embodiment can effectively solve the problem that the display of one frame picture is incomplete when the frame picture data is switched, the display failure is avoided, the data transmission rate can be effectively improved, the data transmission rate requirement during frame picture switching is met, and therefore good frame picture switching is achieved.
Based on the above driving method of the backlight source, an embodiment of the present invention further provides a backlight source, as shown in fig. 5, including a plurality of light emitting elements 1, where the light emitting elements 1 are arranged in an array, n rows of the light emitting elements 1 form a group, where n is greater than 1 and is less than the total number of rows of the light emitting element array, and n is an integer; the driving module 2 further comprises a driving module 2, the driving module 2 comprises a driving unit 21, the driving unit 21 is respectively connected with each group of light-emitting elements 1 and is used for driving the light-emitting elements 1 to emit light group by group, the driving module 2 further comprises a second data storage area RAM2, and the second data storage area RAM2 is connected with the driving unit 21 and is used for storing the data signal of the first frame picture to be switched written in the driving unit before the first frame picture to be switched is switched; the driving unit 21 is used for reading the data signal of the first frame picture to be switched in the second data storage area RAM2 when the last group of light-emitting elements 1 of the frame picture before the first frame picture to be switched is scan-on at the time of switching the first frame picture to be switched.
Optionally, the drive module 2 further comprises a first data storage area RAM1, the first data storage area RAM1 being connected to the drive unit 21; the first data storage area RAM1 is used for storing the data signal of the second frame picture to be switched written in before the second frame picture to be switched is switched; the driving unit 21 is further configured to, when the second to-be-switched frame picture is switched, read a data signal of the second to-be-switched frame picture in the first data storage area RAM1 when the last group of light emitting elements 1 of the previous frame picture of the second to-be-switched frame picture is scanned and turned on; the switching time of the second frame picture to be switched is after the switching time of the first frame picture to be switched.
Optionally, the first data storage area is further configured to store the data signal of the first frame picture written therein before the first frame picture is displayed; the drive unit 21 is also used for reading the data signal of the first frame picture in the first data storage area RAM 1; the first frame is the frame before the first frame to be switched.
This backlight, through set up first data storage area and second data storage area in drive module, can be with earlier frame picture storage in the second data storage area of waiting to switch, later frame picture storage of waiting to switch is in first data storage area, data mutual noninterference in two data storage areas, thereby a frame picture that appears when effectively having solved frame picture data switching shows incomplete problem, avoid appearing showing badly, and can effectively promote data transmission rate, satisfy the data transmission rate requirement when frame picture switches, thereby realize the good switching of frame picture.
An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the backlight driving method in the foregoing embodiments.
The embodiment of the invention also provides a display panel which comprises the backlight source in the embodiment.
By adopting the backlight source in the embodiment, the display defects of the display panel during the switching of the frame image data of the backlight source are improved, and the display quality of the display panel is improved.
The display panel provided by the embodiment of the disclosure can be any product or component with a display function, such as an LCD panel, an LCD television, a display, a mobile phone, a navigator and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A backlight source driving method is provided, the backlight source comprises a plurality of light emitting elements, the light emitting elements are arranged in an array, n rows of the light emitting elements form a group, the light emitting elements are driven to emit light group by group, wherein n is more than 1 and less than the total row number of the light emitting element array, and n is an integer, the driving method comprises the following steps:
before the first frame picture to be switched is switched, writing the data signal of the first frame picture to be switched into a second data storage area;
when the first frame picture to be switched is switched, reading the data signal in the second data storage area when the last group of the luminous elements of the frame picture before the first frame picture to be switched is scanned and turned on.
2. The backlight source driving method according to claim 1, wherein before the first frame picture is displayed, the data signal of the first frame picture is written into a first data storage area;
the first frame is a frame before the first frame to be switched.
3. The backlight source driving method according to claim 2, wherein before switching a second frame picture to be switched, writing a data signal of the second frame picture to be switched into the first data storage area;
when the second frame picture to be switched is switched, reading the data signals in the first data storage area when the last group of light-emitting elements of the previous frame picture of the second frame picture to be switched is scanned and turned on;
the switching time of the second frame picture to be switched is after the switching time of the first frame picture to be switched.
4. The backlight source driving method according to claim 3, wherein the data signal of the first frame to be switched is written into the second data storage area when a frame before the first frame is scanned and before a last group of the light emitting elements of the frame before the first frame is scanned;
and writing the data signal of the second frame picture to be switched into the first data storage area when the previous frame picture of the second frame picture to be switched is scanned and before the last group of light-emitting elements of the previous frame picture are scanned and turned on.
5. The backlight driving method according to claim 1, wherein the frame starts to be displayed after a scan-on signal of the frame is delayed by a set time;
the set time includes a time for half of the frame scanning.
6. The backlight driving method according to claim 1, wherein the data signals of one frame are the same; the data signal comprises the current magnitude for driving the light-emitting element to emit light and the on-time of the current.
7. A backlight source comprises a plurality of light emitting elements which are arranged in an array, wherein n rows of the light emitting elements form a group, n is more than 1 and less than the total row number of the light emitting element array, and n is an integer; the LED lamp also comprises a driving module, the driving module comprises a driving unit, the driving unit is respectively connected with each group of the luminous elements and is used for driving the luminous elements to emit light group by group,
the driving module further comprises a second data storage area, wherein the second data storage area is connected with the driving unit and is used for storing the data signal of the first frame picture to be switched written in the second data storage area before the first frame picture to be switched is switched;
the driving unit is used for reading the data signal of the first frame picture to be switched in the second data storage area when the last group of light-emitting elements of the frame picture before the first frame picture to be switched is scanned and turned on when the first frame picture to be switched is switched.
8. The backlight of claim 7, wherein the driving module further comprises a first data storage area, the first data storage area being connected to the driving unit;
the first data storage area is used for storing the data signal of the second frame picture to be switched written in the first data storage area before the second frame picture to be switched is switched;
the driving unit is further configured to read a data signal of the second to-be-switched frame picture in the first data storage area when the last group of the light emitting elements of the frame picture before the second to-be-switched frame picture is scanned and turned on when the second to-be-switched frame picture is switched;
the switching time of the second frame picture to be switched is after the switching time of the first frame picture to be switched.
9. A storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the backlight driving method according to any one of claims 1 to 6.
10. A display panel comprising the backlight according to any one of claims 7 to 8.
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