CN109523958A - Backlight module, the scanning drive method of backlight module and display device - Google Patents
Backlight module, the scanning drive method of backlight module and display device Download PDFInfo
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- CN109523958A CN109523958A CN201811615598.XA CN201811615598A CN109523958A CN 109523958 A CN109523958 A CN 109523958A CN 201811615598 A CN201811615598 A CN 201811615598A CN 109523958 A CN109523958 A CN 109523958A
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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
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Abstract
The invention discloses a kind of backlight module, the scanning drive method of backlight module and display devices, belong to field of display technology, backlight module includes multiple luminous zones, scan driver module, data update module, luminous zone includes at least a luminescence unit, and scan driver module and data update module are electrically connected with luminescence unit respectively；The scanning drive method of backlight module includes turntable driving stage and multiple data more new stage；In the turntable driving stage, scan driver module provides scanning drive signal to luminous zone；In the data more new stage, data update module provides data to luminous zone and updates driving signal；The working time section and the working time section in turntable driving stage of data more new stage is at least partly overlapping.The problem of present invention can also improve backlight scan frequency while reducing the power consumption of backlight module, improve backlight flicker caused by updating due to data improves the light-out effect and light quality out of backlight module.
Description
Technical field
The present invention relates to field of display technology, more particularly, to the turntable driving side of a kind of backlight module, backlight module
Method and display device.
Background technique
With the development of display technology, liquid crystal display use it is more and more extensive, backlight and liquid crystal display combination
LCD MODULE is constituted together, and backlight module is one of the key component of panel of LCD, and function is to supply
Sufficient brightness and the light source being evenly distributed, can normally show image.Backlight module in the prior art is generally divided into side
Light formula backlight module and two kinds of down straight aphototropism mode set, the light source of sidelight type backlight module are single Zhi Guangyuan of the pendulum in side, from
Light guide plate side is incident, possess light weight, slim, narrow frame, low power consumption characteristic.The spontaneous light source of down straight aphototropism mode set is whole
Face is placed in immediately below backlight module light-emitting surface, because accommodation space becomes larger, so that the thickness of mould group, weight, power consumption are increased,
Its advantage is good light visual angle, light utilization ratio height, simple structure etc. out.For from technology trends, how to drop
The power consumption of low backlight most attracts attention, because backlight is the largest energy depleter, reduces the power consumption of backlight, also
Reduce the power consumption of complete machine.Improving environment among these includes the driving circuit for improving backlight, improves the luminous effect of LED light source
Rate develops new LED kind etc., currently, Local Dimming (local dimming) is most readily achieved in these technologies, effect
A most apparent technology.Especially down straight aphototropism mode set arrange in pairs or groups Local Dimming technology, can be greatly lowered electricity,
Improve display picture reduced value, gray number and reduce ghost etc., local dimming technology is formed using hundreds of LED light sources
The backlight of backlight module, LED light source can be adjusted according to the light and shade of image, the brightness of the part highlighted in display screen image
It can achieve maximum, and part dark simultaneously can reduce brightness, be even switched off, to reach optimal contrast, in this way, secretly
The reduction of area's brightness just reduces the power consumption of backlight.
In the prior art, the driving method of down straight aphototropism mode set is divided into one-to-one and two kinds of scan-type, and existing scanning
In the driver' s timing of formula backlight module, need just to update PWM (Pulse Width before display next frame starts
Modulation, pulse width modulation) data, otherwise the display content of backlight illumination and display panel does not correspond to, it may appear that
Display is abnormal.And PWM count is being updated according to during data, all LED light sources are all the states closed, i.e., pause is to LED light source
Scanning can introduce a low frequency component to the scan frequency of LED light source in this way, and then lead to backlight flicker problem, and backlight
Scanning time out is more long, and scintillation is more obvious.
Therefore it provides a kind of can both reduce back facet current, power consumption is saved, and scan frequency can be improved, improves backlight and dodge
The backlight module of phenomenon, the scanning drive method and display device of backlight module are sparkled, is that those skilled in the art are urgently to be resolved
Technical problem.
Summary of the invention
In view of this, the present invention provides a kind of backlight module, the scanning drive method of backlight module and display device, purport
Solving the problems, such as that energy consumption is big in the prior art, scan frequency is low, backlight flicker.
The present invention provides a kind of scanning drive method of backlight module, backlight module includes multiple luminous zones, scanning drive
Dynamic model block, data update module, luminous zone include at least a luminescence unit, scan driver module and data update module difference
It is electrically connected with luminescence unit；The scanning drive method of backlight module includes turntable driving stage and multiple data more new stage；?
Turntable driving stage, scan driver module provide scanning drive signal to luminous zone；In the data more new stage, data update module
Data, which are provided, to luminous zone updates driving signal；The working time section of data more new stage and the working time in turntable driving stage
Section is at least partly overlapping.
Based on same idea, the present invention also provides a kind of backlight module, backlight module is swept using above-mentioned backlight module
Retouch driving method.
Based on same idea, the present invention also provides a kind of display devices, including above-mentioned backlight module.
Compared with prior art, backlight module provided by the invention, the scanning drive method of backlight module and display device,
At least realize it is following the utility model has the advantages that
In the scanning drive method of backlight module of the invention, backlight module includes multiple luminous zones, and luminous zone is at least wrapped
A luminescence unit is included, the brightness of each different luminous zone can show the carry out light and shade adjusting of image according to display panel, i.e.,
The luminous zone brightness of the part highlighted in display image can achieve maximum, and showing the part of image dark simultaneously can reduce
The brightness of luminescence unit, is even switched off in the luminous zone, to reach optimal contrast, so that darker luminous zone brightness be made to drop
It is low, to reduce the power consumption of backlight module.Scan driver module is used to provide turntable driving letter to each luminescence unit of luminous zone
Number with control each luminous zone luminescence unit shine；Data update module is used to update PWM count before each frame picture is shown
Display content according to data, the emitting brightness and display panel that make backlight module is corresponding, improves light-out effect, increases backlight module
Emitting brightness and display panel show the matching degree of content.The present invention by by the working time section of data more new stage with sweep
The working time section for retouching the driving stage is set as at least partly overlapping, and makes so as to shorten because PWM count is according to data updating
The time of luminous zone pause scanning, backlight scan frequency is improved to a certain extent；Also, shorten luminous zone pause scanning
Time, can reduce eye recognition go out luminous zone pause scanning probability, when luminous zone pause scanning time enough in short-term, people
Eye just can not identify, thus compared with the existing technology, the problem of improving backlight flicker caused by updating due to data, improve
The light-out effect of backlight module and out light quality.
Certainly, implementing any of the products of the present invention specific needs while must not reach all the above technical effect.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of planar structure schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 2 is a kind of scanning drive method schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 3 is the scanning drive method schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 4 is the scanning drive method schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 5 is the planar structure schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 6 is the scanning drive method schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 7 is the planar structure schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 9 is the A-A ' of Fig. 8 to the schematic diagram of the section structure.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is a kind of planar structure schematic diagram of backlight module provided in an embodiment of the present invention, figure
2 be a kind of scanning drive method schematic diagram of backlight module provided in an embodiment of the present invention, a kind of backlight provided in this embodiment
In the scanning drive method of mould group, backlight module 000 includes multiple luminous zones 10, scan driver module 20, data update module
30, luminous zone 10 includes at least a luminescence unit 101, scan driver module 20 and data update module 30 respectively with luminous list
Member 101 is electrically connected；
The scanning drive method of backlight module 000 includes turntable driving stage E and multiple data more new stage F；
In turntable driving stage E, scan driver module 20 provides scanning drive signal to luminous zone 10；
In data more new stage F, data update module 30 provides data to luminous zone 10 and updates driving signal；
The working time section F of data more new stageTWith the working time section E in turntable driving stageTIt is at least partly overlapping.
Specifically, backlight module 000 includes multiple hairs in the scanning drive method of the backlight module 000 of the present embodiment
Light area 10, so as to individually control each luminous zone 10 using local Dimming technology to carry out local backlight driving point
It is bright.Luminous zone 10 includes at least a luminescence unit 101, and the brightness of each different luminous zone 10 can be shown according to display panel
The carry out light and shade adjusting of image shows that 10 brightness of luminous zone of the part highlighted in image can achieve maximum, and show simultaneously
The part of diagram picture dark can reduce the brightness of luminescence unit 101 in the luminous zone 10, be even switched off, to reach optimal right
Than degree, to make darker luminous zone brightness reduce, to reduce the power consumption of backlight module.Scan driver module 20 and data update
Module 30 is electrically connected with luminescence unit 101 respectively, and scan driver module 20 to each luminescence unit 101 of luminous zone 10 for mentioning
It is shone for scanning drive signal with the luminescence unit 101 for controlling each luminous zone 10；Data update module 30 is used in each frame
Picture updates PWM count according to data before showing, the display content of the emitting brightness and display panel that make backlight module 000 is corresponding, mentions
High light-out effect, increases by 000 emitting brightness of backlight module and display panel shows the matching degree of content.
Since the driving method of down straight aphototropism mode set is divided into one-to-one and two kinds of scan-type, wherein scanning backlight mould group
Driving method be suitble to the more scene of backlight subarea number, hardware size can be effectively reduced.And the drive of scanning backlight mould group
Moving frame structure is by dividing all light source subregions by ranks, and same column subregion shares a current control and outputs and inputs, and is led to
The mode of space scanning lights the light source of each subregion line by line.In the driving method of scanning backlight mould group, because LED light source is
Progressive scan, for the LED light source in same area, within a scan period, the time that LED light source is opened is not exceeded
The sweep time of a line, other times are all to close, so scan frequency cannot be too low, are otherwise easy to dodge backlight
It is bright.And in the driver' s timing of existing scanning backlight mould group, because being local Dimming technology, the back of each subregion
Light source, which opens ratio, to be content change show with display panel and changes, so needing before showing that next frame starts just more
New PWM count evidence, otherwise the display content of backlight illumination and display panel does not correspond to, it may appear that display is abnormal.Therefore each frame
Need to separate portion of time for updating PWM count according to data.And PWM count is being updated according to during data, all LED light sources are all
It is the state closed, i.e. pause scans LED light source, a low frequency component can be introduced to the scan frequency of LED light source in this way, into
And leading to backlight flicker problem, and backlight scanning time out is more long, scintillation is more obvious.
Therefore to solve the above-mentioned problems, the scanning drive method of the backlight module 000 of the present embodiment includes turntable driving
Stage E and multiple data more new stage F (indicate the more new stage F lasting work of data by the strip structure with filling in Fig. 2
Time)；Wherein turntable driving stage E provides the stage of scanning drive signal, data to luminous zone 10 for scan driver module 20
More new stage F provides PWM count according to the stage for updating driving signal to luminous zone 10 for data update module 30, and the present embodiment will count
According to the working time section F of more new stageTWith the working time section E in turntable driving stageTIt is set as at least partly overlapping, so as to
To shorten the time for scanning the pause of luminous zone 10 because PWM count is according to data updating, to improve back to a certain extent
Optical scanning frequency；Also, the time for shortening the pause scanning of luminous zone 10 can reduce eye recognition and go out the pause scanning of luminous zone 10
Probability, when the pause scanning of luminous zone 10 time enough in short-term, human eye just can not identify, thus compared with the existing technology, change
The problem of being apt to backlight flicker caused by updating due to data improves the light-out effect and light quality out of backlight module 000.
It should be noted that Fig. 1 of the present embodiment is only to schematically illustrate scan driver module 20 and data update module
30 with 101 electric connection structure of luminescence unit, when it is implemented, the installation position of scan driver module 20 and data update module 30
And layout stracture can be configured according to the actual situation, this embodiment is not limited.It should be further noted that in order to more
Clearly the technical solution of signal the present embodiment, Fig. 2 illustrate adjacent two frame of display panel (frame is 1Frame) in the time
The corresponding scanning drive method of backlight module 000, G1, G2 in Fig. 2, G3 ..., Gn indicate that n that backlight module includes is sent out
Light area 10, G1, G2, G3 ..., the corresponding clock signal of Gn be then that scan driver module 20 is swept to what each luminous zone 10 provided
Retouch driving signal.
In some optional embodiments, referring to FIG. 3, Fig. 3 is another backlight module provided in an embodiment of the present invention
Scanning drive method schematic diagram, in the present embodiment, turntable driving stage E includes M sub-stage E1, M >=2 and be integer, and M sub
Stage E1 includes at least adjacent A sub-stage and the B sub-stage, and the turntable driving work of the B sub-stage is at A
Sub-stage complete turntable driving work after carry out, wherein 1≤A < B≤M and be integer；
The working time section E1 of m-th sub-stageTAt least partly with the working time section F of data more new stageTIt is overlapping.
The turntable driving stage E that the present embodiment further illustrates backlight module 000 includes M sub-stage E1, and M >=2
And be integer, i.e., each turntable driving stage E include at least two sub-stage E1, so as to so that display panel a frame time
Interior includes sub-stage E1 more as far as possible, i.e. raising backlight scan frequency, so as to avoid backlight flicker as far as possible, display panel
It shows in a frame time, the sub-stage E1 that backlight module 000 includes is more, the interval time between two adjacent sub-stage E1
It is shorter, it is when interval time being shorter than the time that human eye can identify, then more unobvious the phenomenon that backlight flicker.The present embodiment is into one
Step defines the working time section E1 of m-th sub-stageTAt least partly with the working time section F of data more new stageTIt is overlapping, by
Adjacent A sub-stage and the B sub-stage are included at least in the M sub-stage E1 of the present embodiment, the B sub-stage is swept
Driving work is retouched to carry out after the A sub-stage completes turntable driving work, wherein 1≤A < B≤M and be integer, therefore originally
M sub-stage E1 of embodiment be successively according to first sub-stage, second sub-stage ..., the sequence of m-th sub-stage
It is successively scanned work, then m-th sub-stage is that the last one in one turntable driving stage E of backlight module is swept
Sub-stage E1 is retouched, that is, shows the time of the last one backlight scan period in a frame time at least partly in display panel
With the working time section F of data more new stageTIt is overlapping, after starting switching so as to the display content in display panel, start
PWM count is completed before being scanned driving to the display picture of next frame according to the update of data, so as to further make to carry on the back
The emitting brightness of optical mode group 000 and the display content of display panel are corresponding, improve light-out effect, increase backlight module 000 and go out light
Brightness and display panel show the matching degree of content.
It should be noted that for the technical solution of clearer signal the present embodiment, Fig. 3 illustrates one frame of display panel
The corresponding scanning drive method of backlight module 000 of (1Frame) in the time, G1, G2 in Fig. 3, G3 ..., Gn indicate backlight mould
The n luminous zone 10 that group includes, G1, G2, G3 ..., the corresponding clock signal of Gn be then scan driver module 20 to each hair
The scanning drive signal that light area 10 provides.
In some optional embodiments, referring to FIG. 4, Fig. 4 is another backlight module provided in an embodiment of the present invention
Scanning drive method schematic diagram, in the present embodiment, each sub-stage E1 includes N number of sub- scan phase E11, N >=2 and be integer；N
A sub- scan phase E11 includes at least adjacent C sub- scan phases and D sub- scan phases, D sub- scan phases
Turntable driving work carried out after the sub- scan phases of C complete turntable drivings work, wherein 1≤C < D≤M and be whole
Number；
The start time point F of data more new stageT0The time point of first sub- scan phase is completed with m-th sub-stage E1
E11T0It is overlapped.
The turntable driving stage E that the present embodiment further illustrates backlight module 000 includes M sub-stage E1, and M >=2
And when being integer, each sub-stage E1 includes N number of sub- scan phase E11, N >=2 and be integer, i.e., each sub-stage E1 is at least wrapped
Two sub- scan phase E11 are included, so as to so as to improve including sub-stage E1 more as far as possible in a frame time of display panel
Each sub-stage E1 while avoiding backlight flicker as far as possible, can also be divided into son scanning more as far as possible by backlight scan frequency
The driving scanning of backlight module 000 is divided sub- scan phase E11 more as far as possible and carried out, so as to promote back by stage E11
Optical mode group goes out light accuracy, and the bright-dark degree convenient for going out light to different sub- scan phase E11 differences is adjusted.The present embodiment
The start time point F for more new stage that further defines dataT0With m-th sub-stage E1 complete first sub- scan phase when
Between point E11T0It is overlapped, since N number of sub- scan phase E11 of the present embodiment includes at least adjacent C sub- scan phases and D
A sub- scan phase, the turntable driving work of D sub- scan phases is after C sub- scan phases complete turntable driving work
It carries out, wherein 1≤C < D≤M and be integer, therefore N number of sub- scan phase E11 of the present embodiment is successively according to first son
Scan phase, second sub- scan phase ..., the sequence of the sub- scan phase of n-th be successively scanned work, then
It is the last one in a turntable driving stage E of backlight module that M sub-stage E1, which completes first sub- scan phase E11,
In sub-stage E1, the stage of first sub- scan phase E11 is completed, that is, to show display panel last in one frame time
The time point E11 of first sub- scan phase E11 is completed in one backlight scan periodT0With the initial time of data more new stage
Point FT0Be overlapped, thereby may be ensured that after the display content of display panel starts to switch, start display picture to next frame into
PWM count is completed before row turntable driving according to the update of data, the working time section F for more new stage that data can also be increased as far as possibleT
With the overlapping time H1 of the working time section of first sub- scan phase, due to the working time section F of data more new stageTGenerally
Identical, thus after the turntable driving stage E for the backlight module that one frame of display panel is shown can be shortened as far as possible, it is next
The turntable driving stage E for the backlight module that frame is shown start before time H2 (as shown in figure 4, wherein H1+H2=FT), so as to
Further to make the emitting brightness of backlight module 000 and the display content correspondence of display panel, light-out effect is improved, back is increased
While 000 emitting brightness of optical mode group and display panel show the matching degree of content, can also further it shorten because of PWM count evidence
Data updating and time (the i.e. turntable driving rank of backlight module that shows of one frame of display panel for making the pause scanning of luminous zone 10
After section E, the turntable driving stage E of backlight module that next frame is shown start before time H2), to further mention
High backlight scan frequency；Also, the time for further shortening the pause scanning of luminous zone 10, eye recognition can be further decreased
The probability of the pause of luminous zone 10 scanning out, the time that pause scans when luminous zone 10, human eye just can not identify enough in short-term, thus
Compared with the existing technology, the problem of further improving backlight flicker caused by updating due to data, improves backlight module 000
Light-out effect and light quality out.
It should be noted that for the technical solution of clearer signal the present embodiment, Fig. 4 illustrates one frame of display panel
The corresponding scanning drive method of backlight module 000 of (1Frame) in the time, G1, G2 in Fig. 4, G3 ..., GN indicate backlight mould
N number of sub- scan phase E11 that group includes, G1, G2, G3 ..., the corresponding clock signal of GN be then scan driver module 20 every
The scanning drive signal that a sub- scan phase E11 is provided.
It in some optional embodiments, is another back provided in an embodiment of the present invention incorporated by reference to reference Fig. 4 and Fig. 5, Fig. 5
The planar structure schematic diagram of optical mode group, in the present embodiment, multiple luminous zones 10 include K luminous sub-districts 100, and shine sub-district 100
It is arranged successively along first direction X and Y extends in a second direction, wherein K=N；First direction X and second direction Y are vertical；
Sub-stage E1 is that scan driver module 20 successively provides the stage of scanning drive signal to K luminous sub-districts 100；It sweeps
It retouches drive module 20 and provides the stage of scanning drive signal to a luminous sub-district 100 as a sub- scan phase E11.
The present embodiment has further explained in the scanning drive method of backlight module, turntable driving stage E neutron rank
The meaning of section E1 and sub- scan phase E11 set multiple luminous zones 10 to include K luminous sub-districts 100, due to the son that shines
Area 100 is arranged successively along first direction X and Y extends in a second direction, therefore a luminous sub-district 100 can be a line luminescence unit
101 (as shown in Figure 1), or can also for adjacent two row luminescence unit 101 (i.e. two row luminescence units 101 drive scanning simultaneously,
Do not illustrate in figure), it can also be adjacent multirow luminescence unit 101, the present embodiment is not especially limited, and is only for purposes of illustrating
One sub- scan phase E11 is stage of the scan driver module 20 to the luminous offer of sub-district 100 scanning drive signal, if
The sub-district 100 that shines has K, then sub- scan phase E11 has N number of, K=N；And sub-stage E1 is scan driver module 20 successively to K
A luminous sub-district 100 provides the stage of scanning drive signal, i.e. a sub-stage E1 is that scan driver module 20 is completed once to carry on the back
The stage of optical scanning work, that is, refer to a scan period of backlight module.
In some optional embodiments, referring to FIG. 6, Fig. 6 is another backlight module provided in an embodiment of the present invention
Scanning drive method schematic diagram, in the present embodiment, the end time point F of data more new stageT1The is completed with m-th sub-stage E1
The time point E1N of N number of sub- scan phaseT0It is overlapped.
The present embodiment further defines end time point FT1The sub- scan phase of n-th is completed with m-th sub-stage E1
Time point E1NT0Be overlapped, due to N number of sub- scan phase E11 of the present embodiment include at least adjacent C sub- scan phases and
The turntable driving work of D sub- scan phases, D sub- scan phases completes turntable driving work in C sub- scan phases
It is carried out after work, wherein 1≤C < D≤M and be integer, therefore N number of sub- scan phase E11 of the present embodiment is successively according to first
A sub- scan phase, second sub- scan phase ..., the sequence of the sub- scan phase of n-th be successively scanned work, that
It is last in a turntable driving stage E of backlight module that m-th sub-stage E1, which completes the sub- scan phase E11 of n-th,
In one sub-stage E1, the stage of last sub- scan phase E11 is completed, that is, shows that display panel in one frame time
The last one backlight scan period in complete the time point E1N of last sub- scan phase E11T0With the data more new stage
End time point FT1It is overlapped, thereby may be ensured that after the display content of display panel starts switching, starts to show next frame
Show picture be scanned driving before complete PWM count according to data update while, by the work and completion of data more new stage
The work of m-th sub-stage E1 scanning almost terminates simultaneously, to subtract the backlight module that one frame of display panel is shown
After turntable driving stage E, the turntable driving stage E for the backlight module that next frame is shown start before time, further
The display content of the emitting brightness and display panel that make backlight module 000 is corresponding, improves light-out effect, increases backlight module 000
While emitting brightness and display panel show the matching degree of content, back caused by updating due to data is further improved
The problem of optical flare, improves the light-out effect and light quality out of backlight module 000.
It should be noted that for the technical solution of clearer signal the present embodiment, Fig. 6 illustrates one frame of display panel
The corresponding scanning drive method of backlight module 000 of (1Frame) in the time, G1, G2 in Fig. 6, G3 ..., GN indicate backlight mould
N number of sub- scan phase E11 that group includes, G1, G2, G3 ..., the corresponding clock signal of GN be then scan driver module 20 every
The scanning drive signal that a sub- scan phase E11 is provided.
In some optional embodiments, referring to FIG. 7, Fig. 7 is another backlight module provided in an embodiment of the present invention
A kind of planar structure schematic diagram, backlight module 111 provided in this embodiment, uses the scanning drive method in above-described embodiment.
Optionally, backlight module 111 provided in this embodiment, the scanning drive method with the backlight module that the various embodiments described above provide
Beneficial effect, can specifically be illustrated with reference to scanning drive method of the various embodiments described above for backlight module, this reality
Applying example, details are not described herein.
In some optional embodiments, with continued reference to FIG. 7, in the present embodiment, backlight module 111 is downward back optical mode
Group.
It is down straight aphototropism mode set, the i.e. spontaneous light of backlight module that the present embodiment, which further defines backlight module 111,
Source whole face is placed in immediately below backlight module light-emitting surface (not illustrating in figure), to reach good light visual angle out, and light benefit
With high-efficient.The down straight aphototropism mode set of the present embodiment, can significantly root by using the scanning drive method of above-described embodiment
Show that the light and shade of image carries out the adjusting of light source light and shade according to display panel, to can also lead to reducing backlight module power consumption
The scan frequency that above-mentioned scanning drive method improves backlight module is crossed, backlight flicker phenomenon is improved.
In some optional embodiments, with continued reference to FIG. 7, in the present embodiment, backlight module 111 includes multiple along first
The luminous zone 10 ' that direction X is arranged successively and Y extends in a second direction；Wherein, first direction X is vertical with second direction Y；It shines
Area 10 ' includes the LED light source 101 ' of multiple array arrangements.
The present embodiment has further explained the 10 ' set-up mode of luminous zone of backlight module 111, and luminous zone 10 ' includes
The LED light source 101 ' of multiple array arrangements, LED light source 101 ' are to use light emitting diode (LED, Light Emitting
Diode) be used as backlight, had the advantages that using the backlight module 111 of LED light source 101 ' it is frivolous, environmentally friendly, therefore can be in liquid
Crystal display backlight source domain is used widely.
It should be noted that the present embodiment does not make specifically specific partitioned mode of the luminous zone 10 ' in backlight module 111
It limits, the shape of luminous zone 10 ' can be in a strip shape along first direction X or Y is in a strip shape or in bulk in a second direction, and this reality
The quantity that example does not limit LED light source 101 ' in the size or luminous zone 10 ' of luminous zone 10 ' is applied, when it is implemented, can basis
Actual design demand is selected.
In some optional embodiments, with continued reference to FIG. 7, in the present embodiment, backlight module 111 includes turntable driving electricity
Road 110, scan drive circuit 110 include drive module 1101, control module 1102；
Drive module 1101 is electrically connected with control module 1102, and drive module 1101 is electric to 1102 output timing of control module
Press signal；Control module 1102 is electrically connected with LED light source 101 ' respectively, and control module 1102 drives according to time-sequential voltage signal
LED light source 101 ' shines.
It includes scan drive circuit 110 and turntable driving electricity that the present embodiment, which has further explained backlight module 111,
The module connection structure that road 110 includes, scan drive circuit 110 include drive module 1101, control module 1102, drive module
1101 export different time-sequential voltage signals to control module 1102, and control module 1102 is driven according to different time-sequential voltage signals
The bright-dark degree that dynamic LED light source 101 ' shines and control is luminous, to realize the purpose of the local dimming of backlight module 111.
It should be further noted that Fig. 7 of the present embodiment is only the drive for schematically illustrating scan drive circuit 110 and including
The connection framework figure of dynamic model block 1101, control module 1102, and in unspecified drive module 1101 and control module 1102
Specific circuit connection structure, those skilled in the art can carry out drive module 1101 and control module according to actual design demand
1102 design, need to only meet down straight aphototropism mode set can drive the different luminous zones 10 ' of scanning light and shade is different to be gone out to reach
Light effect, therefore not to repeat here for the present embodiment.
In some optional embodiments, Fig. 8 and Fig. 9 are please referred to, Fig. 8 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, Fig. 9 is the A-A ' of Fig. 8 to the schematic diagram of the section structure, display device 1000 provided in this embodiment, including upper
The backlight module 1111 in embodiment is stated, further includes the display panel 0000 being oppositely arranged with backlight module 1111 optionally, it can
Choosing, display panel 0000 is liquid crystal display panel.Fig. 8 of the present embodiment only takes the mobile phone as an example, and carries out to display device 1000
Explanation, it is to be understood that display device 1000 provided in an embodiment of the present invention can be computer, TV, Electronic Paper, vehicle-mounted
Other display devices 1000 having a display function such as display device, the present invention is not specifically limited this.The embodiment of the present invention
The display device 1000 of offer, the beneficial effect with backlight module 1111 provided in an embodiment of the present invention, can specifically refer to
The various embodiments described above are illustrated for backlight module 1111, and details are not described herein for the present embodiment.
Through the foregoing embodiment it is found that backlight module provided by the invention, the scanning drive method of backlight module and display
Device, at least realize it is following the utility model has the advantages that
In the scanning drive method of backlight module of the invention, backlight module includes multiple luminous zones, and luminous zone is at least wrapped
A luminescence unit is included, the brightness of each different luminous zone can show the carry out light and shade adjusting of image according to display panel, i.e.,
The luminous zone brightness of the part highlighted in display image can achieve maximum, and showing the part of image dark simultaneously can reduce
The brightness of luminescence unit, is even switched off in the luminous zone, to reach optimal contrast, so that darker luminous zone brightness be made to drop
It is low, to reduce the power consumption of backlight module.Scan driver module is used to provide turntable driving letter to each luminescence unit of luminous zone
Number with control each luminous zone luminescence unit shine；Data update module is used to update PWM count before each frame picture is shown
Display content according to data, the emitting brightness and display panel that make backlight module is corresponding, improves light-out effect, increases backlight module
Emitting brightness and display panel show the matching degree of content.The present invention by by the working time section of data more new stage with sweep
The working time section for retouching the driving stage is set as at least partly overlapping, and makes so as to shorten because PWM count is according to data updating
The time of luminous zone pause scanning, backlight scan frequency is improved to a certain extent；Also, shorten luminous zone pause scanning
Time, can reduce eye recognition go out luminous zone pause scanning probability, when luminous zone pause scanning time enough in short-term, people
Eye just can not identify, thus compared with the existing technology, the problem of improving backlight flicker caused by updating due to data, improve
The light-out effect of backlight module and out light quality.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of scanning drive method of backlight module, which is characterized in that
The backlight module includes multiple luminous zones, scan driver module, data update module, and the luminous zone includes at least one
A luminescence unit, the scan driver module and the data update module are electrically connected with the luminescence unit respectively；
The scanning drive method of the backlight module includes turntable driving stage and multiple data more new stage；
In the turntable driving stage, the scan driver module provides scanning drive signal to the luminous zone；
In the data more new stage, the data update module provides data to the luminous zone and updates driving signal；
The working time section of the data more new stage and the working time section in the turntable driving stage are at least partly overlapping.
2. the scanning drive method of backlight module according to claim 1, which is characterized in that
The turntable driving stage includes M sub-stage, M >=2 and be integer, and the M sub-stage is including at least adjacent A
The turntable driving work of a sub-stage and the B sub-stage, the B sub-stage is completed to scan in the A sub-stage
Driving work after carry out, wherein 1≤A < B≤M and be integer；
The working time section of sub-stage described in m-th is at least partly overlapping with the working time section of the data more new stage.
3. the scanning drive method of backlight module according to claim 2, which is characterized in that
Each sub-stage includes N number of sub- scan phase, N >=2 and be integer；N number of sub- scan phase includes at least phase
Adjacent C sub- scan phases and D sub- scan phases, the turntable driving of the D sub- scan phases work described
The sub- scan phases of C carry out after completing turntable drivings work, wherein 1≤C < D≤M and be integer；
Sub-stage described in the start time point and m-th of the data more new stage complete first sub- scan phase when
Between put be overlapped.
4. the scanning drive method of backlight module according to claim 3, which is characterized in that
The multiple luminous zone includes K luminous sub-districts, and the luminous sub-district is arranged successively and in a second direction along first direction
Extend, wherein K=N；The first direction and the second direction are vertical；
The sub-stage successively provides the rank of the scanning drive signal to the K luminous sub-districts for the scan driver module
Section；The scan driver module is that a son is swept to the stage that a luminous sub-district provides the scanning drive signal
Retouch the stage.
5. the scanning drive method of backlight module according to claim 3, which is characterized in that the data more new stage
End time point is overlapped with the time point of sub- scan phase described in the completion n-th of sub-stage described in m-th.
6. a kind of backlight module, it is characterised in that: it includes the described in any item scannings of claim 1-5 that the backlight module, which uses,
Driving method.
7. backlight module according to claim 6, which is characterized in that
The backlight module is down straight aphototropism mode set.
8. backlight module according to claim 6, which is characterized in that
The backlight module includes multiple luminous zones for being arranged successively along first direction and extending in a second direction；Wherein, described
First direction is vertical with the second direction；The luminous zone includes the LED light source of multiple array arrangements.
9. backlight module according to claim 8, which is characterized in that
The backlight module includes scan drive circuit, and the scan drive circuit includes drive module, control module；
The drive module is electrically connected with the control module, and the drive module is believed to the control module output timing voltage
Number；The control module is electrically connected with the LED light source respectively, and the control module drives institute according to the time-sequential voltage signal
LED light source is stated to shine.
10. a kind of display device, which is characterized in that including the described in any item backlight modules of claim 6-9.
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