CN109686320A - Backlight module and its driving method, display device - Google Patents
Backlight module and its driving method, display device Download PDFInfo
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- CN109686320A CN109686320A CN201910067763.0A CN201910067763A CN109686320A CN 109686320 A CN109686320 A CN 109686320A CN 201910067763 A CN201910067763 A CN 201910067763A CN 109686320 A CN109686320 A CN 109686320A
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133612—Electrical details
-
- 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
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of backlight module and its driving methods, display device, comprising: luminous zone, at least one scan driver module, at least one data update module；Luminous zone includes: a plurality of control line, a plurality of signal wire, multiple luminescence units；Data update module includes the first storage unit and the second storage unit of electrical connection；Before light emitting phase, the first storage unit is used to receive the data-signal of the 1st luminous frame and is transmitted to the second storage unit；In m-th of luminous frame, second storage unit is used to provide the data-signal of m-th of luminous frame to signal wire, first storage unit is used to receive the data-signal of m+1 luminous frames, before m+1 luminous frames start, the first storage unit is by the data signal transmission of m+1 luminous frames to the second storage unit；Wherein N, m are positive integer, and N >=2,1≤m≤N-1.Compared with the existing technology, backlight flicker phenomenon can be improved, improve scan frequency, save power consumption.
Description
Technical field
The present invention relates to field of display technology, fill more particularly, to a kind of backlight module and its driving method, display
It sets.
Background technique
A kind of display device that the prior art provides, including backlight module and display panel.Wherein, display panel itself is not no
It shines, the function of backlight module is to light source display panel well-off brightness and be evenly distributed.
Relative position according to light source in backlight module is different, backlight module can be divided into sidelight type backlight module and it is straight under
Formula backlight module.
For down straight aphototropism mode set, in the prior art, driving method be divided into it is one-to-one and two kinds of scan-type, and it is existing
In the driver' s timing of scanning backlight mould group, 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 is not corresponded to and is shown
Show exception.And PWM count is being updated according to during data, all light sources are all the states closed, i.e. pause is to light source scanning, in this way
A low frequency component can be introduced to the scan frequency of light source, and then lead to backlight flicker problem, and backlight scans time out
More long, scintillation is more obvious.
Therefore, the scintillation for improving down straight aphototropism mode set is those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In view of this, the present invention provides a kind of backlight module and its driving methods, display device, to solve the prior art
The middle problem.
On the one hand, the present invention provides a kind of backlight modules, comprising: luminous zone, at least one scan driver module, at least
One data update module；Luminous zone includes: a plurality of control line, a plurality of signal wire, multiple luminescence units；The first of luminescence unit
Pole is by control line and scan driver module electrical connection to receive scanning signal；Second pole of luminescence unit passes through signal wire sum number
It is electrically connected according to update module to receive data-signal；Data update module includes the first storage unit and the second storage of electrical connection
Unit；The working stage of backlight module includes light emitting phase, and light emitting phase includes N number of luminous frame, and a luminous frame includes
At least one subframe；In a subframe, scan driver module successively provides scanning signal to a plurality of control line, and data update mould
Block provides data-signal to signal wire；Before light emitting phase, the first storage unit is used to receive the data letter of the 1st luminous frame
Number and be transmitted to the second storage unit；In m-th of luminous frame, the second storage unit is used to provide m-th of luminous frame to signal wire
Data-signal, the first storage unit is used to receive the data-signal of m+1 luminous frame, starts it in a luminous frames of m+1
Before, the first storage unit is by the data signal transmission of m+1 luminous frame to the second storage unit；Wherein N, m are positive integer, and N
>=2,1≤m≤N-1.
On the other hand, the present invention provides a kind of driving method of backlight module, backlight module includes luminous zone, luminous zone
It include: a plurality of control line, a plurality of signal wire, multiple luminescence units；First pole of luminescence unit and control line electrical connection, shine single
Second pole of member and signal wire electrical connection；Driving method includes: that the light emitting phase of control backlight module includes N number of luminous frame；Its
In in a luminous frame, successively provide scanning signal to a plurality of control line, to signal wire provide data-signal；In light emitting phase
Before, data-signal and the storage of the 1st luminous frame are received；In m-th of luminous frame, m-th of luminous frame is provided to signal wire
Data-signal receives the data-signal of m+1 luminous frames and storage；Wherein N, m are positive integer, and N >=2,1≤m≤N-1.
Another aspect, the present invention provides a kind of display devices, including backlight module, and are oppositely arranged with backlight module
Display panel；Backlight module driving method provided by the invention is driven.
Compared with prior art, backlight module and its driving method provided by the invention, display device, at least realize as
Under the utility model has the advantages that
It is provided with the first storage unit and the second storage unit of electrical connection in data update module, shines at m-th
Frame, the second storage unit are used to provide the data-signal of m-th of luminous frame to signal wire, and the first storage unit is for receiving m+
The data-signal of 1 luminous frame, before m+1 luminous frames start, the first storage unit believes the data of m+1 luminous frames
Number it is transmitted to the second storage unit.As, during m-th of luminous frame carries out, backlight module can be completed m+1 and shine
The data of frame update, therefore no setting is required between m-th of luminous frame and m+1 luminous frames additional data more new stage, phase
For the prior art, on the one hand, the problem of data update caused backlight flicker can be improved, improve the product of backlight module
Matter；On the other hand, the scan frequency of backlight module can be improved；Another aspect is conducive to the power consumption for saving backlight module.
Certainly, implementing any of the products of the present invention specific needs while need 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 timing diagram of backlight module shown in FIG. 1；
Fig. 3 is the planar structure schematic diagram of another backlight module provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of driving method provided in an embodiment of the present invention；
Fig. 5 is another timing diagram of backlight module shown in FIG. 1；
Fig. 6 is a kind of the schematic diagram of the section structure of display device provided in an embodiment of the present invention.
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 timing diagram of backlight module shown in FIG. 1；
Present embodiments provide a kind of backlight module, comprising:
Luminous zone LA, at least one scan driver module 10, at least one data update module 20；
Luminous zone LA includes: a plurality of control line CL, a plurality of signal wire DL, multiple luminescence unit LU；
The first pole of luminescence unit LU is by control line CL and the electrical connection of scan driver module 10 to receive scanning signal；
The second pole of luminescence unit LU is by signal wire DL and the electrical connection of data update module 20 to receive data-signal；
Data update module 20 includes the first storage unit 21 and the second storage unit 22 of electrical connection；
The working stage of backlight module includes light emitting phase TE, and light emitting phase includes N number of luminous frame 1frame/m frame/
M+1 frame, a luminous frame include at least one subframe sf；In a subframe sf, scan driver module 10 is to a plurality of control
Line CL processed successively provides scanning signal, and data update module 20 provides data-signal to signal wire DL；
Before light emitting phase TE, the first storage unit 21 is used to receive the data-signal of the 1st luminous 1 frame of frame
TD1 is simultaneously transmitted to the second storage unit 22；
In m-th of luminous frame m frame, the second storage unit 22 is used to provide the number of m-th of luminous frame to signal wire DL
It is believed that number TDm, the first storage unit 21 is used to receive the data-signal TDm+1 of m+1 luminous frame m+1 frame, in m+1
Before a luminous frame starts, the data-signal TDm+1 of m+1 luminous frames is transmitted to the second storage unit by the first storage unit 21
22；Wherein N, m are positive integer, and N >=2,1≤m≤N-1.
In backlight module provided in this embodiment, luminous zone LA can emit beam to provide area source.Specifically, shining
Multiple luminescence unit LU are provided in area LA, luminescence unit LU can emit beam.Optionally, luminescence unit LU includes luminous two
Pole pipe (Light Emitting Diode, abbreviation LED).Optionally, luminescence unit LU is Mini LED or Micro LED.Its
In, Mini LED also known as secondary millimeter light emitting diode, it is intended that LED of the crystallite dimension about between 100 microns to 1000 microns.It adopts
When forming luminescence unit LU provided by the embodiment of the present application with Mini LED, yield is high, has abnormity cutting characteristic, arranges in pairs or groups soft
Property substrate can also form the backlight form of high curved surface, possess better color rendering, be applied to Shi Nengwei display surface in display panel
Plate provides finer HDR (High Dynamic Range, high dynamic range images) subregion.The embodiment of the present application also may be selected
Micro LED is LED of the crystallite dimension about between 1-10 microns as luminescence unit LU, Micro LED, can be realized 0.05
Millimeter or smaller szie pixel particle display screen, the power consumption of Micro LED is very low, and have preferable stability of material and
And askiatic remains.
Further include a plurality of control line CL, a plurality of signal wire DL in the LA of luminous zone, control line CL to luminescence unit DL first
Scanning signal is transmitted in pole, and signal wire DL transmits data-signal to the second pole of luminescence unit LU.Wherein, the scanning of each control line CL
Signal is provided by scan driver module 10, and the data-signal of each signal wire DL is provided by data update module 20.In the present embodiment,
It is only illustrated so that scanning signal is high level signal as an example, optionally, scanning signal may be low level signal, this implementation
No longer attached drawing repeats example one by one.In Fig. 2, with Rectangle filling schematic data signal and its more new stage.
The first pole and the second pole of luminescence unit LU can shine after receiving suitable electric signal respectively, and it is possible to control
The voltage difference of scanning signal processed and data-signal is to control the brightness of luminescence unit LU.Wherein, different luminescence unit LU can
To control respectively, different luminescence unit LU is made to issue the light of different brightness.
The working stage of backlight module includes light emitting phase TE and non-luminescent stage.In the non-luminescent stage, backlight module is
Dark-state, the first pole and the second pole of each luminescence unit LU does not receive electric signal, correspondingly, each luminescence unit LU does not shine；It is sending out
The first pole and the second pole of photophase TE, each luminescence unit LU receive electric signal respectively, and each luminescence unit LU is electric based on the received
Signal and shine.
Wherein, light emitting phase includes N number of 1 frame/m frame/m+1 frame of luminous frame, when backlight module is applied to
When in display device, the display frame of a luminous frame and display panel is one-to-one, a luminous frame and a display frame
Duration it is roughly the same.Also, the frame that under ideal conditions, shines is synchronous progress with corresponding display frame, to avoid going out
The phenomenon that the display picture of light and display panel that existing backlight module issues does not correspond to.
In luminous frame and corresponding display frame, the brightness of each luminescence unit LU is and content shown by display panel
Corresponding, before each luminous frame starts, backlight module needs to update the data signal transmission of each luminescence unit LU to data
Module 20, otherwise the display picture of backlight illumination and display panel is not corresponding and appearance shows abnormal phenomenon.Shine frame into
During row, the data-signal of each luminescence unit LU is passed sequentially through signal wire DL and is transmitted to corresponding hair by data update module 20
Light unit LU, so that content shown by the brightness of each luminescence unit LU and display panel is corresponding.
One luminous frame includes at least one subframe sf, and in a subframe sf, scan driver module 10 is to a plurality of control
Line CL successively provides scanning signal, and data update module 20 provides data-signal to signal wire DL.Wherein, the quantity of control line CL
For a item, a is the positive integer greater than 3.A plurality of control line is respectively control line CL1, control line CL2, control line CL3 ... control
Line CLa.In the present embodiment, the sequence of scanning signal is only received as control line CL1, control line CL2, control line using control line
It is illustrated for CL3 ... control line CLa.It is understood that a plurality of control line CL receives the sequencing of scanning signal
Can there are many, for example, control line receive scanning signal sequence can be control line CLa ... control line CL3, control line
CL2, control line CL1.The sequence that the present embodiment receives scanning signal for each control line is not specifically limited.
In each subframe of the same luminous frame, data update module 20 to the data-signal that signal wire DL is provided be identical
's.As, in the same luminous frame, same luminescence unit LU received data signal in each subframe is identical.Change speech
It, in the same luminous frame, backlight module is identical in the luminous situation of each subframe.
It should be noted that in Fig. 2, only it is illustrated so that a luminous frame includes at least two subframe sf as an example, it can be with
Understand, the sub-frame number in a luminous frame can be configured according to the real work situation of backlight module, this implementation
Example is not specifically limited this.
In the present embodiment, the first storage unit 21 and the second storage that electrical connection is provided in data update module 20 are single
Member 22, the first storage unit 21 and the second storage unit 22 are respectively provided with the function of memory data signal.
Before light emitting phase TE starts, there are data preparation stages for backlight module, receive and deposit in data preparation stage
Store up the data-signal TD1 of the 1st luminous frame.As, before light emitting phase TE starts, the first storage unit 21 receives the 1st
The data-signal TD1 of luminous frame, is then transmitted to the second storage unit 22 for the data-signal TD1 of the 1st luminous frame, first deposits
Storage unit 21 is the state that data empty.
Backlight module is during carrying out the 1st luminous frame, each luminescence unit that the second storage unit 22 is stored
The data-signal TD1 of LU is sequentially providing to each luminescence unit LU by signal wire DL.Since the first storage unit 21 is entering the 1st
Data are emptied before a luminous frame, the first storage unit can receive the data-signal TD2 of the 2nd luminous frame at this time.It changes
Yan Zhi, during the progress of the 1st luminous frame, data update module 20 has had updated the data-signal of the 2nd luminous frame
TD2, it is not necessary that the additional data more new stage is arranged between the 1st and the 2nd luminous frame.Backlight module enters the 2nd and shines
Before frame, the data-signal TD2 of the 2nd luminous frame is transmitted to the second storage unit 22 by the first storage unit 21, so that
Backlight module can be directly entered the 2nd luminous frame.
And so on, in m-th of luminous frame, the second storage unit 22 is used to provide m-th of luminous frame to signal wire DL
Data-signal TDm, the first storage unit 21 are used to receive the data-signal TD m+1 of m+1 luminous frames, shine at m+1
Before frame starts, the data-signal TD m+1 of m+1 luminous frames is transmitted to the second storage unit 22 by the first storage unit 21；?
M+1 luminous frames, the first storage unit 21 are used to receive the data-signal TD m+2 of m+2 luminous frames；Wherein N, m are positive
Integer, and N >=2,1≤m≤N-1.It is understood that light emitting phase includes N number of luminous frame, shine frame in n-th, backlight mould
Group no longer needs to prepare the data-signal of next frame, thus shines in frame in n-th, and the second storage unit 22 is to a plurality of signal wire DL
The data-signal that n-th shines frame is provided.
The additional data more new stage since no setting is required between m-th of luminous frame and m+1 luminous frames, on the one hand,
When the time of light emitting phase is constant, can be used to increase the quantity of luminous frame, as the time that the data saved update
The scan frequency of backlight module can be improved, promote backlight quality；On the other hand, the luminous frame of backlight module is to be carried out continuously
, compared with the existing technology, the problem of data update caused backlight flicker can be improved；Another aspect, when backlight module
When scan frequency is constant, can be used to increase the sweep time of every row luminescence unit, i.e., the time that the data saved update
For the charging time for increasing luminescence unit, the driving current of luminescence unit can be reduced accordingly, to be conducive to save back
The power consumption of optical mode group.
It should be noted that scan driver module 10 and data update module 20 in backlight module provided in this embodiment
Any one of can be set in backlight module.Optionally, any in scan driver module 10 and data update module 20
Person can be set in the terminal installation where backlight module.In the present embodiment, for clear, brief description technical solution,
Scan driver module 10 and data update module 20 are described as the composition part of backlight module, for turntable driving mould
The specific setting position of block 10 and data update module 20 is without concrete restriction.
In backlight module provided in this embodiment, the first storage unit of electrical connection is provided in data update module 20
21 and second storage unit 22, in m-th of luminous frame, the second storage unit 22 is used to provide m-th of luminous frame to signal wire DL
Data-signal, the first storage unit 21 is used to receive the data-signal of m+1 luminous frame, starts in a luminous frames of m+1
Before, the first storage unit 21 is by the data signal transmission of m+1 luminous frame to the second storage unit 22.As, it is sent out at m-th
During light frame carries out, the data that m+1 luminous frames can be completed in backlight module update, therefore m-th of luminous frame and m+1
No setting is required between a luminous frame additional data more new stage, compared with the existing technology, on the one hand, can improve data update
The problem of caused backlight flicker, improves the quality of backlight module；On the other hand, the scanning frequency of backlight module can be improved
Rate；Another aspect is conducive to the power consumption for saving backlight module.
In some alternative embodiments, referring to FIG. 3, Fig. 3 is another backlight module provided in an embodiment of the present invention
Planar structure schematic diagram；
In the present embodiment, the quantity of data update module 20 is A, and a plurality of signal wire DL is divided into A signal line group
DLG, each signal line group DLG include a plurality of signal wire DL；
Data update module 20 and signal line group DLG are arranged in a one-to-one correspondence, data update module 20 and corresponding setting
Signal line group DLG electrical connection；Wherein, A is positive integer, and A >=2.
It in backlight module provided in this embodiment, is only illustrated by taking A=2 as an example, a plurality of signal wire DL is grouped and is arranged,
Being divided into 2 signal line groups DLG, each signal line group DLG has a plurality of signal wire DL, wherein the particular number root of signal wire DL
It is designed according to the actual conditions of backlight module, the present embodiment is not specifically limited this.
2 data update modules 20 are provided in backlight module, data update module 20 and signal line group DLG are corresponded
It is arranged and is electrically connected, data update module 20 provides data-signal to the signal line group DLG of corresponding setting.
Optionally, 2 data update modules 20 are respectively the first data update module 20a and the second data update module
The working stage of 20b, the first data update module 20a and the second data update module 20b are synchronous.Specifically, for example,
In m-th of luminous frame m frame, the second storage unit 22 and the second data update module 20b of the first data update module 20a
The second storage unit 22 provide data-signal to corresponding data line group DLG simultaneously, the first data update module 20a's
First storage unit 21 and the first storage unit 21 of the second data update module 20b receive receive m+1 luminous frame m simultaneously
The data-signal TDm+1 of+1 frame.
When the order of magnitude of signal wire DL in backlight module is more, signal wire DL is grouped and is correspondingly arranged data more
New module 20 provides data-signal to signal line group DLG, it is possible to reduce the data-signal stored required for data update module 20
Quantity, on the one hand, the time that can reduce data update is further advantageously implemented during m-th luminous frame carries out,
The data that m+1 luminous frames can be completed in backlight module update；On the other hand, the data of data update module 20 can be mitigated
Load is handled, the cost of data update module is reduced, to reduce the cost of backlight module.
It should be noted that being only illustrated by taking A=2 as an example in Fig. 3.In other optional embodiments of the invention, A
Can be the positive integers such as 3,4,5, the specific value of A is configured according to the actual design of backlight module, the present embodiment to this not
Make concrete restriction.
In some alternative embodiments, referring to FIG. 1, multiple luminescence unit LU X and second direction Y along a first direction
It arranges in array, first direction X and second direction Y intersection.
In backlight module provided in this embodiment, multiple luminescence unit LU arrange at multiple lines and multiple rows, optionally, first direction
X and second direction Y are vertical.For example, X arrangement becomes a line, multiple luminescence unit LU to multiple luminescence unit LU along a first direction
Becoming a column or multiple luminescence unit LU along second direction Y arrangement becomes a line, Duo Gefa along second direction Y arrangement
X arrangement becomes a column to light unit LU along a first direction.Multiple luminescence unit LU arrange in array, and arrangement is more regular,
Be conducive to the cabling setting of simplified control line CL and signal wire DL.
In other optional implementations of the invention, multiple luminescence unit LU can also there are many arrangement mode, this hairs
Bright embodiment no longer repeats one by one.
In some alternative embodiments, please continue to refer to Fig. 1 and Fig. 2, it is located at the luminous list with a line along first direction X
First LU and same control line CL electrical connection, Y is located at the luminescence unit LU and same signal line DL of same row in a second direction
Electrical connection.
In the present embodiment, identical sweep is received simultaneously along the first pole that first direction X is located at the luminescence unit LU with a line
Signal is retouched, can receive different data-signals along the second pole that first direction X is located at the luminescence unit LU with a line, it is each to shine
Unit LU issues corresponding light according to the electric signal of its first pole and the second pole.As, backlight module provided in this embodiment
In, multiple luminescence unit LU shine line by line.Specifically, for example, with control line CL1 electrical connection same a line luminescence unit LU
Luminescence unit LU for the 1st row luminescence unit and control line CL2 same a line being electrically connected is the 2nd row luminescence unit and control line
The luminescence unit LU of same a line of CL3 electrical connection is same a line that the 3rd row luminescence unit ... ... and control line CLa are electrically connected
Luminescence unit LU is a row luminescence unit.In the present embodiment, the 1st row luminescence unit, the 2nd row luminescence unit, the 3rd row shine single
Member ..., a row luminescence unit successively shines line by line.Since the time of a subframe is shorter, thus, human eye can not identify respectively
Row luminescence unit LU successively shines line by line, and according to the visual persistence phenomenon of human eye, visually multirow luminescence unit is same
Shi Faguang's.It is understood that the quantity of the subframe in a luminous frame is unsuitable very few, it is very few to may result in eye recognition
Out the luminous sequencing of each row luminescence unit, to backlight flicker phenomenon occur.Suitable son is set in a luminous frame
The quantity of frame is conducive to the scintillation for improving backlight module, promotes backlight quality.
The embodiment of the invention also provides a kind of driving methods of backlight module.
It is a kind of flow chart of driving method provided in an embodiment of the present invention incorporated by reference to reference Fig. 1, Fig. 2 and Fig. 4, Fig. 4；
In driving method provided in this embodiment, backlight module includes luminous zone LA, and luminous zone LA includes: a plurality of control line
CL, a plurality of signal wire DL, multiple luminescence unit LU；
The first pole of luminescence unit LU and control line CL electrical connection, the second pole of luminescence unit LU and signal wire DL are electrically connected
It connects；
Driving method includes:
The light emitting phase TE for controlling backlight module includes N number of luminous frame 1frame/m frame/m+1 frame；Wherein
In a luminous 1 frame/m frame/m+1 frame of frame, scanning letter is successively provided to a plurality of control line CL
Number, data-signal is provided to signal wire DL；
Before light emitting phase TE, receives the data-signal TD1 of the 1st luminous frame 1frame and store；
In m-th of luminous frame, the data-signal TDm of m-th of luminous frame m frame is provided to signal wire DL, receives m+1
The data-signal TDm+1 of a luminous frame m+1frame is simultaneously stored；Wherein N, m are positive integer, and N >=2,1≤m≤N-1.
In the present embodiment, the luminous zone LA of backlight module includes multiple luminescence unit LU, and luminescence unit LU includes luminous two
Pole pipe (Light Emitting Diode, abbreviation LED).Optionally, luminescence unit LU is Mini LED or Micro LED.
Further include a plurality of control line CL, a plurality of signal wire DL in the LA of luminous zone, control line CL to luminescence unit DL first
Pole transmit scanning signal, signal wire DL to the second pole of luminescence unit LU transmit data-signal, the first pole of luminescence unit LU and
Second pole can shine after receiving suitable electric signal respectively.
In driving method provided in this embodiment, light emitting phase includes N number of luminous frame, when backlight module is applied to display dress
When setting middle, the display frame of a luminous frame and display panel is one-to-one.Optionally, a luminous frame frame includes extremely
A few subframe sf, specifically can be with reference to explanation above, and this embodiment is not repeated.
Before light emitting phase TE starts, there are data preparation stages for backlight module, receive and deposit in data preparation stage
Store up the data-signal TD1 of the 1st luminous frame.Backlight module provides the during carrying out the 1st luminous frame, to signal wire DL
The data-signal TD1 of 1 luminous frame 1frame, and control the data-signal TD2 that backlight module receives the 2nd luminous frame 2frame
And it stores.And so on, in m-th of luminous frame, the data-signal TDm of m-th of luminous frame m frame is provided to signal wire DL,
It receives the data-signal TDm+1 of m+1 luminous frame m+1 frame and stores.
It is understood that light emitting phase includes N number of luminous frame, shine frame in n-th, backlight module no longer needs under preparation
The data-signal of one frame, thus shine in frame in n-th, the second storage unit 22 provides n-th to a plurality of signal wire DL and shines
The data-signal of frame.
Due to having been completed that the data-signal of m+1 luminous frames updates during the progress of m-th of luminous frame, thus
No setting is required between m-th of luminous frame and m+1 luminous frames additional data more new stage, on the one hand, back can be improved
The scan frequency of optical mode group；On the other hand, the luminous frame of backlight module is carried out continuously, compared with the existing technology, Ke Yigai
The problem of backlight flicker caused by kind data update.
In some alternative embodiments, please continue to refer to Fig. 1, Fig. 2 and Fig. 4, in the present embodiment, in backlight module,
X's multiple luminescence unit LU and second direction Y arranges in array along a first direction, first direction X and second direction Y intersection；
It is electrically connected along first direction X positioned at the luminescence unit LU and same control line CL with a line, Y in a second direction
It is electrically connected in the luminescence unit LU and same signal line DL of same row；
Driving method further include:
In a luminous frame, scanning signal is successively provided to a plurality of control line CL, and two adjacent control line CL
Scanning signal does not overlap, and provides data-signal to a plurality of signal wire DL.
In driving method provided in this embodiment, multiple luminescence unit LU arrange at multiple lines and multiple rows, optionally, first direction
X and second direction Y are vertical.Multiple luminescence unit LU arrange in array, and arrangement is more regular, are conducive to simplified control line CL
It is arranged with the cabling of signal wire DL.
One luminous frame may include a subframe, also may include more than two subframes, in the present embodiment, only with one
A luminous frame at least two subframe sf including being illustrated.In a subframe sf, scan driver module 10 is to a plurality of control
Line CL processed successively provides scanning signal, and data update module 20 provides data-signal to signal wire DL.In the present embodiment, only with control
The quantity of line CL processed be a item, control line receive scanning signal sequence be control line CL1, control line CL2, control line CL3 ...
It is illustrated for control line CLa.Wherein, the scanning signal of two adjacent control line CL does not overlap, so that adjacent two
The luminescence unit LU of control line CL control receives data-signal respectively.
Optionally, referring to FIG. 5, Fig. 5 is another timing diagram of backlight module shown in FIG. 1；Fig. 5 is only sent out with m-th
The light frame of update for to(for) data-signal is illustrated.Also, in Fig. 5, only in a subframe, control line CLa is last
It is illustrated for reception scanning signal.After the control line CLa of the last item receives scanning signal, the number of m-th of luminous frame
It is believed that number being transmitted to corresponding luminescence unit LU, each luminescence unit LU completes respective luminous task.Last
There are of short duration delay time sfa after one control line CLa reception scanning signal, this section of delay time, sfa can be used for depositing
Store up the data-signal TD m+1 of m+1 luminous frames.
In driving method provided in this embodiment, control line CL control luminescence unit LU successively shines line by line.Due to one
The time of subframe is shorter, thus, human eye can not identify that each row luminescence unit LU successively shines line by line, according to the vision of human eye
Phenomenon is persisted, visually multirow luminescence unit is luminous simultaneously.
The present invention also provides a kind of display device, the backlight module including any of the above-described embodiment offer of the present invention, with
And the display panel being oppositely arranged with backlight module.
Specifically, referring to FIG. 6, Fig. 6 is a kind of the schematic diagram of the section structure of display device provided in an embodiment of the present invention.
Display device provided in this embodiment, including backlight module 102, display panel 101, optionally, display panel 101
For liquid crystal display panel, including first substrate 100, the second substrate 200 and it is held and mounted on first substrate 100 and the second base
Liquid crystal layer 300 between plate 200.
It is understood that the present embodiment is only illustrated so that display panel 101 is liquid crystal display panel as an example herein,
In other optional implementations of the invention, display panel 101 can be the other kinds of display surfaces such as electronic paper display panel
Plate, the present embodiment will not enumerate explanation.
The present invention also provides a kind of display devices, including backlight module, and the display being oppositely arranged with backlight module
Panel；Wherein, the driving method that any of the above-described embodiment of the backlight module application present invention provides is driven.
Display device provided in this embodiment can be liquid crystal display device or display device of electronic paper, the present embodiment pair
This is not specifically limited.The structure of display device provided in this embodiment can refer to Fig. 6, and the present embodiment no longer attached drawing repeats.
Various embodiments of the present invention provide display device, can be mobile phone, computer, TV, display device for mounting on vehicle etc. other
Display device having a display function, the present invention are not specifically limited this.Display device provided in an embodiment of the present invention, has
The beneficial effect of backlight module or driving method provided in an embodiment of the present invention can specifically refer to the tool of the various embodiments described above
Body explanation, details are not described herein for the present embodiment.
Through the foregoing embodiment it is found that backlight module provided by the invention and its driving method, display device, are at least realized
It is following the utility model has the advantages that
It is provided with the first storage unit and the second storage unit of electrical connection in data update module, shines at m-th
Frame, the second storage unit are used to provide the data-signal of m-th of luminous frame to signal wire, and the first storage unit is for receiving m+
The data-signal of 1 luminous frame, before m+1 luminous frames start, the first storage unit believes the data of m+1 luminous frames
Number it is transmitted to the second storage unit.As, during m-th of luminous frame carries out, backlight module can be completed m+1 and shine
The data of frame update, therefore no setting is required between m-th of luminous frame and m+1 luminous frames additional data more new stage, and one
Aspect can improve the problem of data update caused backlight flicker, improve the quality of backlight module；It on the other hand, can be with
Improve the scan frequency of backlight module；Another aspect is conducive to the power consumption for saving backlight module.
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 (9)
1. a kind of backlight module characterized by comprising
Luminous zone, at least one scan driver module, at least one data update module；
The luminous zone includes: a plurality of control line, a plurality of signal wire, multiple luminescence units；
First pole of the luminescence unit is by the control line and scan driver module electrical connection to receive scanning signal；
Second pole of the luminescence unit is by the signal wire and data update module electrical connection to receive data-signal；
The data update module includes the first storage unit and the second storage unit of electrical connection；
The working stage of the backlight module includes light emitting phase, and the light emitting phase includes N number of luminous frame, and one described luminous
Frame includes at least one subframe；In a subframe, the scan driver module is successively provided to a plurality of control line
Scanning signal, the data update module provide data-signal to the signal wire；
Before the light emitting phase, first storage unit is used to receive the data-signal of the 1st luminous frame and is transmitted to
Second storage unit；
In m-th of luminous frame, second storage unit is used to provide the data-signal of m-th of luminous frame to the signal wire,
First storage unit is used to receive the data-signal of m+1 luminous frames, described before m+1 luminous frames start
First storage unit is by the data signal transmission of the m+1 luminous frame to second storage unit；Wherein N, m are positive whole
Number, and N >=2,1≤m≤N-1.
2. backlight module according to claim 1, which is characterized in that
The quantity of the data update module is A, and a plurality of signal wire is divided into A signal line group, each signal
Line group includes a plurality of signal wire；
The data update module and the signal line group are arranged in a one-to-one correspondence, the data update module and corresponding setting
The signal line group electrical connection；Wherein, A is positive integer, and A >=2.
3. backlight module according to claim 1, which is characterized in that
The multiple luminescence unit is arranged with second direction in array along a first direction, the first direction and described second
Direction intersection.
4. backlight module according to claim 3, which is characterized in that
It is located at control line electrical connection described in the luminescence unit and same with a line along the first direction, along described second
Direction is located at the electrical connection of signal wire described in the luminescence unit and same of same row.
5. backlight module according to claim 1, which is characterized in that
The luminescence unit includes light emitting diode.
6. a kind of driving method of backlight module, which is characterized in that
The backlight module includes luminous zone, and the luminous zone includes: a plurality of control line, a plurality of signal wire, multiple luminescence units；
First pole of the luminescence unit and control line electrical connection, the second pole of the luminescence unit and signal wire electricity
Connection；
The driving method includes:
The light emitting phase for controlling the backlight module includes N number of luminous frame；Wherein
In a luminous frame, scanning signal is successively provided to a plurality of control line, Xiang Suoshu signal wire provides data
Signal；
Before the light emitting phase, the data-signal of the 1st luminous frame and storage are received；
In m-th of luminous frame, Xiang Suoshu signal wire provides the data-signal of m-th of luminous frame, receives the number of m+1 luminous frames
It is believed that number and store；Wherein N, m are positive integer, and N >=2,1≤m≤N-1.
7. driving method according to claim 6, which is characterized in that
In the backlight module, the multiple luminescence unit is arranged with second direction in array along a first direction, and described the
One direction and second direction intersection；
It is located at control line electrical connection described in the luminescence unit and same with a line along the first direction, along described second
Direction is located at the electrical connection of signal wire described in the luminescence unit and same of same row；
The driving method further include:
In a luminous frame, scanning signal, and two adjacent controls are successively provided to a plurality of control line
The scanning signal of line does not overlap, and provides data-signal to a plurality of signal wire.
8. a kind of display device, which is characterized in that including the described in any item backlight modules of claim 1-5, and with it is described
The display panel that backlight module is oppositely arranged.
9. a kind of display device, which is characterized in that including backlight module, and the display surface being oppositely arranged with the backlight module
Plate；The driving method that the backlight module application claim 6 or 7 provides is driven.
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