CN109493811A - A kind of display device and its driving method - Google Patents
A kind of display device and its driving method Download PDFInfo
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- CN109493811A CN109493811A CN201811594073.2A CN201811594073A CN109493811A CN 109493811 A CN109493811 A CN 109493811A CN 201811594073 A CN201811594073 A CN 201811594073A CN 109493811 A CN109493811 A CN 109493811A
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- drive circuit
- viewing area
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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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- 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
- G09G3/36—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 using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of display device and its driving method, display device includes: display panel, backlight module and multiple switch unit, and multiple switch unit is serially connected with respectively between the signal output end and luminescence unit of the backlight drive circuit of backlight module.During exporting scanning signal by pixel of the scanning signal output end of scan drive circuit into preset sub- viewing area, the control terminal of the switch unit of the corresponding luminescence unit electrical connection in the viewing area control signal output Xiang Yuzi of scan drive circuit exports cut-off signals；After all pixels output scanning signal of the scanning signal output end of scan drive circuit into preset sub- viewing area, the control terminal of the switch unit of luminescence unit electrical connection in the luminous subregion of the corresponding backlight module in the viewing area control signal output Xiang Yuzi of scan drive circuit exports Continuity signal,, raising display effect synchronous with backlight drive to showing can be achieved；And can zonal control backlight module luminescence unit, improve contrast.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of display device and its driving methods.
Background technique
High dynamic range (High-Dynamic Range, HDR) display system can expanded images present performance, Ke Yiti
For more dynamic ranges and image detail.
Liquid crystal display includes liquid crystal display panel and backlight, and liquid crystal display panel and backlight are respectively by different drives
Dynamic circuit is driven.HDR show in a liquid crystal display using more and more extensive, when liquid crystal display is shown using HDR,
It needs to carry out zonal control to backlight.
For the backlight of zonal control, it is understood that there may be the circuit or chip of several backlight drives, the driving for backlight
Driving with display panel influences display effect there are nonsynchronous problem.
Summary of the invention
The present invention provides a kind of display device and its driving method, to realize synchronous driving backlight and display panel, makes to show
Show that effect is better.
In a first aspect, the display device includes: display panel the embodiment of the invention provides a kind of display device, display
Panel includes multiple scan drive circuits and multiple pixels, and scan drive circuit includes multiple scanning signal output ends and multiple controls
Signal output end processed, scanning signal output end are that pixel exports scanning signal by scan line；
Backlight module, backlight module include backlight drive circuit and multiple luminous subregions, and luminous subregion includes at least one
Luminescence unit；Backlight drive circuit includes multiple signal output ends, and signal output end is electrically connected to luminescence unit；
Multiple switch unit, multiple switch unit are serially connected between signal output end and luminescence unit respectively；Each switch
Unit includes control terminal, and the control terminal of switch unit is electrically connected with control signal output one-to-one correspondence, and switch unit is used for root
Signal conduction or shutdown according to its control terminal.
Second aspect, the embodiment of the invention also provides a kind of driving method of display device, the display surfaces of display device
Plate includes viewing area and non-display area, and viewing area includes several sub- viewing areas, and every sub- viewing area includes at least one-row pixels；It should
Driving method includes:
During pixel output scanning signal of the scanning signal output end of scan drive circuit into preset sub- viewing area,
The control of the switch unit of the corresponding luminescence unit electrical connection in the viewing area control signal output Xiang Yuzi of scan drive circuit
End output cut-off signals；
All pixels of the scanning signal output end of scan drive circuit into preset sub- viewing area export scanning signal
Later, shining in the luminous subregion of the corresponding backlight module in the viewing area control signal output Xiang Yuzi of scan drive circuit
The control terminal of the switch unit of unit electrical connection exports Continuity signal, and the driving signal of backlight drive circuit output is single by switch
Member is transmitted to the luminescence unit of the luminous subregion of backlight module corresponding with sub- viewing area.
The present invention provides a kind of display device and its driving method, the display device include: display panel, backlight module and
Multiple switch unit, multiple switch unit are serially connected with the signal output end of the backlight drive circuit of backlight module respectively and shine single
Between member.The scanning signal phase is exported by pixel of the scanning signal output end of scan drive circuit into preset sub- viewing area
Between, the control of the switch unit of the corresponding luminescence unit electrical connection in the viewing area control signal output Xiang Yuzi of scan drive circuit
End processed exports cut-off signals；All pixels output of the scanning signal output end of scan drive circuit into preset sub- viewing area
After scanning signal, the luminous subregion of the corresponding backlight module in the viewing area control signal output Xiang Yuzi of scan drive circuit
The control terminal of the switch unit of interior luminescence unit electrical connection exports Continuity signal, can make in scan drive circuit to default
When pixel in sub- viewing area is scanned, do not lighted with the luminescence unit for presetting the corresponding luminous subregion in sub- viewing area；With
And after scan drive circuit is to the picture element scan for presetting sub- viewing area, luminous subregion corresponding with sub- viewing area is preset
Luminescence unit is lighted, and then, raising display effect synchronous with backlight drive to display driving may be implemented；And it is possible to real
Now to the zonal control of luminescence unit in backlight module, contrast is improved.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 2 is backlight drive circuit in display device provided in an embodiment of the present invention, shine subregion and scan drive circuit
Attachment structure schematic diagram；
Fig. 3 is backlight drive circuit in another display device provided in an embodiment of the present invention, shine subregion and scanning drive
The attachment structure schematic diagram of dynamic circuit；
Fig. 4 is a kind of driver' s timing figure of display device provided in an embodiment of the present invention；
Fig. 5 is the driver' s timing figure of another display device provided in an embodiment of the present invention；
Fig. 6 is backlight drive circuit in another display device provided in an embodiment of the present invention, shine subregion and scanning drive
The attachment structure schematic diagram of dynamic circuit；
Fig. 7 is a kind of driver' s timing figure of display device provided in an embodiment of the present invention；
Fig. 8 is the driver' s timing figure of another display device provided in an embodiment of the present invention；
Fig. 9 is backlight drive circuit in another display device provided in an embodiment of the present invention, shine subregion and scanning drive
The attachment structure schematic diagram of dynamic circuit；
Figure 10 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another display device provided in an embodiment of the present invention；
Figure 12 is the flow chart of the driving method of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention, with reference to Fig. 1, the display device packet
Include: display panel 100, display panel 100 include multiple scan drive circuits 110 and multiple pixels 120, scan drive circuit
110 include multiple scanning signal output ends (gout1, gout2 ... in Fig. 1) and multiple control signal output end (in Fig. 1
COUT1, COUT2 ...), scanning signal output end is that pixel 120 exports scanning signal by scan line；
Backlight module 200, backlight module 200 include backlight drive circuit 210 and multiple luminous subregions 220, and shine subregion
220 include at least one luminescence unit 221；Backlight drive circuit 210 includes multiple signal output end M, and signal output end M is electrically connected
It is connected to luminescence unit 221；
Multiple switch unit 300, multiple switch unit 300 be serially connected with respectively signal output end M and luminescence unit 221 it
Between；Each switch unit 300 includes control terminal G, and the control terminal G and control signal output of switch unit 300 correspond electricity
Connection, switch unit 300 are used for signal conduction or shutdown according to its control terminal G.
As described in the background art, there are the drivings of the driving of backlight module 200 and display panel 100 for existing display device
Nonsynchronous problem, to solve this problem, the embodiment of the present invention provide above-mentioned display device.Fig. 2 is that the embodiment of the present invention provides
Display device in backlight drive circuit, shine subregion and scan drive circuit attachment structure schematic diagram.With reference to Fig. 1 and Fig. 2,
Display device provided in this embodiment includes display panel 100, backlight module 200 and multiple switch unit 300, display panel
100 include scan drive circuit 110 and multiple pixels 120, and scan drive circuit 110 passes through scanning signal output end to pixel
120 output scanning signals, and then show display panel 100.Backlight module 200 includes backlight drive circuit 210
With multiple luminous subregions 220, the subregion 220 that shines includes at least one luminescence unit 221, after luminescence unit 221 shines, Ke Yiwei
Corresponding pixel 120 provides backlight.Switch unit 300 is serially connected in the signal output end M of backlight drive circuit 210 and shines
Between unit 221,300 control terminal G of switch unit is electrically connected with the control signal output of scan drive circuit 110, and then is made
The on or off of switch unit 300 can be controlled by obtaining scan drive circuit 110.
It continues to refer to figure 1, the display panel 100 of display device includes viewing area and non-display area, and viewing area includes several
Sub- viewing area 10, every sub- viewing area 10 include that at least one-row pixels 120, Fig. 1 schematically shows the hair of backlight module 200
The situation corresponding with the pixel 120 of display panel 100 of light subregion 220.Shine with reference to Fig. 1, in backlight module 200 subregion 220 with
The corresponded manner of the pixel 120 of display panel 100 can be, projection covering of the luminous subregion 200 on display panel 100
Multiple pixels 120 of display panel 100, projection of the luminous subregion 200 of a line on display panel 100 cover display panel 100
Multirow pixel 120.Projection of the luminous subregion 220 on display panel 100 is schematically shown with reference to Fig. 1, Fig. 1 to cover
It the case where four pixels 120 in lid display panel 100, i.e., a luminous subregion 220 corresponds to two rows, two four pixel 120 of column, needs
It is noted that a corresponding pixel 120 of luminous subregion 220 is not limited to two rows, two column, 4 pixels 120 shown in Fig. 1, one
The corresponding pixel 120 of a luminous subregion 220 can correspond to the pixel 120 of m row n column, wherein m >=1, n >=1.
When being driven to display device, scan drive circuit 110 scanning signal output end to preset sub- viewing area
During pixel 120 in 10 exports scanning signal, the viewing area 10 control signal output Xiang Yuzi of scan drive circuit 110 is right
The control terminal G output cut-off signals for the switch unit 300 that the luminescence unit 221 answered is electrically connected；The scanning of scan drive circuit 110
After all pixels 120 of the signal output end into preset sub- viewing area 10 export scanning signal, backlight drive circuit 210
What the luminescence unit 221 in the luminous subregion 220 of the corresponding backlight module 200 in the viewing area signal output end Xiang Yuzi 10 was electrically connected
The control terminal G of switch unit 300 exports Continuity signal, and the driving signal that backlight drive circuit 210 exports passes through switch unit 300
It is transmitted to the luminescence unit 221 of the luminous subregion 220 of backlight module 200 corresponding with sub- viewing area 10, and then can be made
When scan drive circuit 110 is scanned the pixel 120 preset in sub- viewing area 10, to preset sub- viewing area 10 corresponding with this
The luminescence unit 221 of luminous subregion 220 is not lighted；And in scan drive circuit 110 to the pixel 120 for presetting sub- viewing area 10
After scanned, the luminescence unit 221 of luminous subregion 220 corresponding with sub- viewing area 10 is preset is lighted, and then may be implemented pair
Display driving is synchronous with backlight drive, improves display effect；And it is possible to realize to the subregion to shine in backlight module 200
Control improves contrast.
It is core of the invention thought above, continues in conjunction with the attached drawing in the embodiment of the present invention, the present invention is implemented
Technical solution in example is clearly and completely described.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Under the premise of making creative work, every other embodiment obtained be shall fall within the protection scope of the present invention.
Fig. 3 is backlight drive circuit in another display device provided in an embodiment of the present invention, shine subregion and scanning drive
The attachment structure schematic diagram of dynamic circuit.With reference to Fig. 3, optionally, signal output end includes multiple driving signal output ends (in Fig. 3
A1, A2, A3, A4 ...) and multiple reference voltage output terminals (B1, B2, B3, B4 ... in Fig. 3)；Shine 220 array of subregion row
Cloth, switch unit 300 further include input terminal and output end, and the input terminal of switch unit 300 is electrically connected with driving signal output end,
The output end of switch unit 300 is connected to the first pole of the luminescence unit 221 that a line shines in subregion 220；Reference voltage is defeated
Outlet is connected to the second pole of the luminescence unit 221 that same row shines in subregion 220.
With reference to Fig. 3, the 221 of luminescence unit can be light emitting diode, and the first pole of luminescence unit 221 can be luminous two
The anode of pole pipe, the second pole of luminescence unit 221 can be the cathode of light emitting diode.The turntable driving electricity of display panel 100
When 110 scanning element 120 of road, the mode of progressive scan is generallyd use.In the present embodiment, using the input terminal of switch unit 300
It is electrically connected with the driving signal output end of backlight drive circuit 210, the output end of switch unit 300 is connected to luminous point of a line
First pole of the luminescence unit 221 in the luminous subregion 220 in area 220 can make scan drive circuit 110 believe by its control
Number output end output control signal, after control switch unit 300 is connected, backlight drive circuit 210 passes through driving signal output end
The driving signal of output can be transmitted to the luminescence unit 221 that a line shines in subregion 220, and then can make same row subregion
Interior luminescence unit 221 is lighted simultaneously.
Optionally, switch unit 300 be transistor, control terminal of the first pole of transistor as switch unit 300, second
Input terminal of the pole as switch unit 300, output end of the third pole as switch unit 300.
The grid of the extremely transistor of the first of transistor, scan drive circuit 110 can by its control signal output to
The grid input low and high level control signal of transistor carrys out the on or off of transistor.With reference to Fig. 1 and Fig. 3, for example, when switch
When transistor is N-type transistor, pass through the picture in the viewing area its scanning signal output end Xiang Yizi 10 in scan drive circuit 110
It, can be by its control signal output to luminous subregion 220 corresponding with the sub- viewing area 10 during element 120 exports scanning signal
The grid output low level signal of the transistor of the corresponding electrical connection of interior luminescence unit 221 is to turn it off, for example, believing in scanning
Number output end exports scanning signal to the shine pixel of the corresponding sub- viewing area of subregion 220 of the first row being electrically connected with transistor T1
When, scan drive circuit 110, which exports low level signal by its control signal output COUT1, turns off the first transistor T1,
So that the luminescence unit 221 in luminous subregion 220 corresponding with the sub- viewing area 10 is not lighted；In scan drive circuit
After all pixels 120 in 110 viewing areas Xiang Yizi 10 export scanning signal, can by its control signal output to
The high electricity of grid output of the transistor of the corresponding electrical connection of luminescence unit 221 in the corresponding luminous subregion 220 in the sub- viewing area 10
Ordinary mail number is to turn it on, so that the luminescence unit 221 in luminous subregion 220 corresponding with the sub- viewing area 10 is lighted.
Fig. 4 is a kind of driver' s timing figure of display device provided in an embodiment of the present invention, which can be with corresponding diagram 1
With display device shown in Fig. 3, the driver' s timing of display device shown in Fig. 4 corresponds to the case where switch unit is N-type transistor.Knot
Fig. 1, Fig. 3 and Fig. 4 are closed, is illustrated so that one in display device sub- viewing area 10 includes 90 row pixels 120 as an example, a line shines
Subregion 220 corresponds to a sub- viewing area 10, i.e., the corresponding 1-90 row pixel of the luminous subregion 220 of the first row in backlight module, with 1-90
The corresponding luminous subregion of row pixel is controlled by transistor T1, the corresponding 91-180 row picture of the luminous subregion 220 of the second row in backlight module
Element, luminous subregion corresponding with 91-180 row pixel are controlled by transistor T2, and so on.Scan drive circuit 110 passes through it
During each row pixel 120 in the viewing area scanning signal output end Xiang Yizi 10 is sequentially output scanning signal, the sub- viewing area
Pixel 120 in 10 does not complete data write-in, if lighting the corresponding luminescence unit 221 in sub- viewing area 10, meeting during this period
The pixel 120 in the sub- viewing area 10 is caused not show normally.
It with reference to Fig. 4, is illustrated by taking the pixel of 1-90 row as an example, scan drive circuit 110 is defeated by its scanning signal
During 1-90 row pixel 120 in the viewing area outlet Xiang Yizi 10 is sequentially output scanning signal, scan drive circuit 110 can lead to
Cross the switch unit 300 that its control signal output is electrically connected to luminescence unit 221 corresponding with the sub- viewing area 10, i.e. crystal
The control terminal of pipe T1 exports low level signal, and switch unit 300 turns off at this time, so that the corresponding luminous subregion in the sub- viewing area 10
220 do not shine, so that the pixel 120 of the sub- viewing area 10 is not illuminated.The scanning signal of scan drive circuit 110 exports
It, should after holding all pixels 120 into preset sub- viewing area 10 (still by taking 1-90 row pixel as an example) to export scanning signal
All pixels 120 complete the write-in of data in sub- viewing area 10, can be shown, the control letter of scan drive circuit 110
The jump of number output end is high level signal, and the high level driving that backlight drive circuit 210 export by driving signal output end is believed
The luminescence unit 221 of the luminous subregion 220 of backlight module 200 corresponding with the sub- viewing area 10 number is transmitted to by transistor T1
(luminescence unit 221 i.e. in the luminous subregion 220 of the first row), the reference voltage output terminal of backlight drive circuit 210 exports always
Low level signal, so that the luminescence unit 221 that a line shines in subregion 220 can be lighted simultaneously, it is that 1-90 row pixel 120 is same
When backlight is provided, the 1-90 row pixel 120 for having been written into data can be shown simultaneously, so realize display driving and back
The synchronization of optical drive is improved display effect, and can be controlled with luminescence unit 221 of the subregion to backlight module 200, is improved
Contrast.
It is illustrated by taking the pixel of 91-180 row as an example in conjunction with Fig. 1, Fig. 3 with continued reference to Fig. 4, scan drive circuit
Before the pixel 120 of 91-180 row of the 110 scanning signal output end into preset sub- viewing area 10 exports scanning signal, sweep
The control signal output of driving circuit 110 is retouched into the luminous subregion 220 of backlight module 200 corresponding with the sub- viewing area
The control terminal of the switch unit 300 that luminescence unit 221 is electrically connected, i.e. transistor T2 exports Continuity signal, backlight drive circuit 210
The driving signal of output is transmitted to the luminous subregion 220 of backlight module 200 corresponding with sub- viewing area 10 by switch unit 300
Luminescence unit 221.Specifically, with reference to Fig. 3 and Fig. 4, it is right with it for the corresponding sub- viewing area of 91-180 row pixel 120
The switch unit 300 that luminescence unit 221 is electrically connected in the luminous subregion 220 answered is defeated by the control signal of scan drive circuit 110
Outlet COUT2 control, before the pixel 120 into the corresponding sub- viewing area 10 of 91-180 row pixel 120 exports scanning signal,
High level signal can be exported by COUT2, so that transistor T2 is connected, the driving signal output end of backlight drive circuit 210 is defeated
Driving signal out can be transmitted to the luminous list in luminous subregion 220 corresponding with the sub- viewing area 10 by switch unit 300
Member 221, lights it.Because of pixel of the scanning signal output end in scan drive circuit 110 into preset sub- viewing area 10
Before 120 output scanning signals, the pixel 120 in the sub- viewing area 10 is in the holding stage of previous frame picture, at this time to this
What the luminescence unit 221 in the luminous subregion 220 of the corresponding backlight module 200 of pixel 120 in sub- viewing area 10 was electrically connected opens
The control terminal for closing unit 300 exports Continuity signal, it is ensured that the display picture of display device is normally shown.
Fig. 5 is the driver' s timing figure of another display device provided in an embodiment of the present invention, which can correspond to
Fig. 1 and display device shown in Fig. 3, and the driver' s timing of display device shown in Fig. 5 corresponds to the feelings that switch unit is N-type transistor
Condition.It is still illustrated so that one in display device sub- viewing area 10 includes 90 row pixels 120 as an example, the luminous subregion 220 of a line is right
Answer a sub- viewing area 10.The corresponding 1-90 row pixel of the luminous subregion 220 of the first row, corresponding with 1-90 row pixel i.e. in backlight module
Luminous subregion controlled by transistor T1, the second row shines the corresponding 91-180 row pixel of subregion 220 in backlight module, with 91-180
The corresponding luminous subregion of row pixel is controlled by transistor T2, and so on.
With reference to Fig. 3 and Fig. 5, the scanning signal output end of scan drive circuit 110 is to (such as the 1- of preset sub- viewing area 10
90 rows) in pixel 120 export scanning signal after, and in the next sub- viewing area 10 adjacent to preset viewing area (such as
91-180 row) pixel 120 export scanning signal during, the control signal output of scan drive circuit 110 to sub- display
The control terminal for the switch unit 300 that luminescence unit 221 in the luminous subregion 220 of the corresponding backlight module 200 in area 10 is electrically connected
High level signal is exported, so that the switch unit 300 is connected.
The scanning signal output end of scan drive circuit 110 is to adjacent with preset viewing area (such as 1-90 row pixel 120)
Next sub- viewing area 10 (such as 91-180 row) all pixels 120 export scanning signal after, the control of scan drive circuit 110
Luminescence unit 221 of the signal output end processed into the luminous subregion 220 of backlight module 200 corresponding with preset sub- viewing area 10
The control terminal output low level signal of the switch unit 300 of electrical connection turns off the switch unit 300.Above-mentioned display device
Driver' s timing can make the luminescence unit 221 in each luminous subregion 220 only adjacent in corresponding sub- viewing area 10
It is lighted during receiving scanning signal in next sub- viewing area 10, thereby reduces the power consumption of backlight.
Fig. 6 is backlight drive circuit in another display device provided in an embodiment of the present invention, shine subregion and scanning drive
The attachment structure schematic diagram of dynamic circuit, with reference to Fig. 6, signal output end include multiple driving signal output ends (A1, A2 in Fig. 3,
A3, A4 ...) and multiple reference voltage output terminals (B1, B2, B3, B4 ... in Fig. 3)；Shine 220 array arrangement of subregion, switch
The input terminal of unit 300 is electrically connected with reference voltage output terminal, and the output end of switch unit 300 is connected to a line and shines state
Second pole of luminescence unit 221 in subregion；Driving signal output end connects luminescence unit 221 in the luminous subregion 220 of same row
First pole.
In the present embodiment, using the input terminal of switch unit 300 and the reference voltage output terminal electricity of backlight drive circuit 210
Connection, the output end of switch unit 300 are connected to the luminescence unit 221 in the luminous subregion 220 of the luminous subregion 220 of a line
Second pole can make scan drive circuit 110 pass through its control signal output output control signal, control switch unit
After 300 conductings, backlight drive circuit 210 can be transmitted to a line and be shone by reference to the driving signal that voltage output end exports to be divided
Luminescence unit 221 in area 220, and then the luminescence unit 221 in same row subregion can be made while being lighted.
Fig. 7 is a kind of driver' s timing figure of display device provided in an embodiment of the present invention, can be used for driving Fig. 1 and Fig. 6 couples
The display device answered includes still 90 row pixels 120 with one in display device sub- viewing area 10, switch is single with reference to Fig. 6 and Fig. 7
Member 300 is is illustrated for N-type transistor, the corresponding sub- viewing area 10 of the luminous subregion 220 of a line.I.e. in backlight module
The corresponding 1-90 row pixel of the luminous subregion 220 of a line, luminous subregion corresponding with 1-90 row pixel are controlled by transistor T1, backlight mould
The corresponding 91-180 row pixel of the luminous subregion 220 of second row in group, luminous subregion corresponding with 91-180 row pixel is by transistor T2
Control, and so on.
It is illustrated by taking the pixel of 1-90 row as an example, scan drive circuit 110 passes through its scanning signal output end to one
Pixel 120 during each row pixel 120 of 1-90 row is sequentially output scanning signal in sub- viewing area 10, in the sub- viewing area 10
Do not complete pixel 120 data write-in, during this scan drive circuit 110 can by its control signal output to the son
The control terminal of the switch unit 300 of the corresponding luminescence unit 221 in viewing area 10 electrical connection exports low level signal, so that opening
It closes unit 300 to turn off, so that the luminescence unit 221 in the corresponding luminous subregion 220 in the sub- viewing area 10 does not shine, so that the son
The pixel 120 of viewing area 10 is not illuminated.
The all pixels of 1-90 row of the scanning signal output end of scan drive circuit 110 into preset sub- viewing area 10
After 120 output scanning signals, all pixels 120 complete the write-in of data in the sub- viewing area 10, can be shown, be swept
The control signal jump for retouching the control signal output COUT1 output of driving circuit 110 is high level signal, with the sub- viewing area
The switch unit 300 of the corresponding electrical connection of the luminescence unit 221 of 10 corresponding luminous subregions 220, i.e. transistor T1 conducting, backlight are driven
The low level drive signal that dynamic circuit 210 is exported by reference to voltage output end is transmitted to by switch unit 300 to be shown with son
Second pole of the luminescence unit 221 of the luminous subregion 220 of the corresponding backlight module 200 in area 10, the driving of backlight drive circuit 210
Signal output end exports high level driving signal always, so can make switch unit 300 be connected after, with switch unit 300
The luminescence unit 221 that connected a line shines in subregion 220 can be lighted simultaneously, provide backlight simultaneously for 1-90 row pixel 120,
The 90 row pixels 120 through data are written can be shown simultaneously, and then realized and shown that driving is synchronous with backlight drive, be mentioned
High display effect, and can be controlled with luminescence unit 221 of the subregion to backlight module 200, improve contrast.
It with continued reference to Fig. 7, is illustrated by taking the pixel of 91-180 row as an example, the scanning signal of scan drive circuit 110
Before the pixel 120 of output end from 91-180 to preset sub- viewing area 10 exports scanning signal, the control of scan drive circuit 110
Luminescence unit 221 of the signal output end processed into the luminous subregion 220 of backlight module 200 corresponding with the sub- viewing area 10 is electrically connected
The switch unit 300 connect, the i.e. control terminal of transistor T2 export Continuity signal, the driving signal that backlight drive circuit 210 exports
The luminescence unit 221 of the luminous subregion 220 of backlight module 200 corresponding with sub- viewing area 10 is transmitted to by switch unit 300.
Specifically, with reference to Fig. 6 and Fig. 7, sub- viewing area 10 corresponding for 91-180 row pixel 120, corresponding luminous subregion
The switch unit 300 that luminescence unit 221 is electrically connected in 220 is controlled by the control signal output COUT2 of scan drive circuit 110
System can pass through COUT2 before the pixel 120 into the corresponding sub- viewing area 10 of 91-180 row pixel 120 exports scanning signal
High level signal is exported, so that switch unit 300 (N-type transistor) is connected, the reference voltage output terminal of backlight drive circuit 210
The low level drive signal of output can be transmitted in luminous subregion 220 corresponding with the sub- viewing area 10 by switch unit 300
Luminescence unit 221, light it.Because the scanning signal output end in scan drive circuit 110 is to preset sub- viewing area 10
Before interior pixel 120 exports scanning signal, the pixel 120 in the sub- viewing area 10 is in the holding stage of previous frame picture,
221 electricity of luminescence unit in the luminous subregion 220 of the corresponding backlight module 200 of pixel 120 into the sub- viewing area 10 at this time
The control terminal of the switch unit 300 of connection exports Continuity signal, it is ensured that the display picture of display device is normally shown.
Fig. 8 is the driver' s timing figure of another display device provided in an embodiment of the present invention, which can correspond to
Fig. 1 and display device shown in fig. 6, and it is N-type transistor that the driver' s timing of display device shown in Fig. 8, which corresponds to switch unit 300,
The case where.It is still illustrated so that one in display device sub- viewing area 10 includes 90 row pixels 120 as an example, a line shines subregion
A 220 corresponding sub- viewing areas 10.
With reference to Fig. 6 and Fig. 8, the scanning signal output end of scan drive circuit 110 is to (such as the 1- of preset sub- viewing area 10
90 rows) in pixel 120 export scanning signal after, and in the next sub- viewing area 10 adjacent to preset viewing area (such as
91-180 row) pixel 120 export scanning signal during, the control signal output of scan drive circuit 110 to sub- display
The control terminal for the switch unit 300 that luminescence unit 221 in the luminous subregion 220 of the corresponding backlight module 200 in area 10 is electrically connected
High level signal is exported, so that the switch unit 300 is connected.
The scanning signal output end of scan drive circuit 110 is to adjacent with preset viewing area (such as 1-90 row pixel 120)
Next sub- viewing area 10 (such as 91-180 row) all pixels 120 export scanning signal after, the control of scan drive circuit 110
Luminescence unit 221 of the signal output end processed into the luminous subregion 220 of backlight module 200 corresponding with preset sub- viewing area 10
The control terminal output low level signal of the switch unit 300 of electrical connection turns off the switch unit 300.Above-mentioned display device
Driver' s timing can make the luminescence unit 221 in each luminous subregion 220 only adjacent in corresponding sub- viewing area 10
Electricity during scanning signal is received in next sub- viewing area 10, thereby reduces the power consumption of backlight module 200.
Fig. 9 is backlight drive circuit 210 in another display device provided in an embodiment of the present invention, shine 220 and of subregion
The attachment structure schematic diagram of scan drive circuit 110, with reference to Fig. 9, signal output end includes multiple driving signal output ends and more
A reference voltage output terminal；Go together the lamp string in series of luminescence unit 221, each luminous subregion 220 include a lamp string or
The lamp string of several parallel connections, each one end of each lamp string is electrically connected and is electrically connected by a switch unit 300 in luminous subregion 220
To driving signal output end；The other end of each lamp string is electrically connected to a reference voltage output terminal in each luminous subregion 220.
In the present embodiment, the series connection of luminescence unit 221 to shine in subregion 220 forms lamp string structure, each luminous subregion 220
Lamp string including a lamp string or several parallel connections, Fig. 9 are carried out so that a luminous subregion 220 includes two lamp strings in parallel as an example
It schematically illustrates.The structure of display device shown in Fig. 9, a luminous subregion 220 can correspond to a sub- viewing area 10, i.e. backlight
The corresponding 1-90 row pixel of the luminous subregion 220 of the first row, luminous subregion corresponding with 1-90 row pixel are controlled by transistor T1 in mould group
System, the second row shines the corresponding 91-180 row pixel of subregion 220 in backlight module, luminous subregion corresponding with 91-180 row pixel by
Transistor T2 control, and so on.The applicable Fig. 4 of display device shown in Fig. 9 and driver' s timing shown in fig. 5.
Use one end of each lamp string in each luminous subregion 220 by being electrically connected to driving signal with switch unit 300
Output end, the other end of each lamp string is electrically connected to the structure of a reference voltage output terminal in each subregion, can to scan
During pixel 120 in 110 viewing area Xiang Yizi 10 of driving circuit exports scanning signal, exported by its control signal output
It controls Signal-controlled switch unit 300 to close, so that the luminescence unit in luminous subregion 220 corresponding with the sub- viewing area 10
221 do not light；And after 110 all pixels 120 of scan drive circuit export scanning drive signal, it is defeated that signal is controlled by it
Outlet exports second control signal, and after control switch unit 300 is connected, backlight drive circuit 210 is by reference to voltage output end
The driving signal of output can be transmitted to the luminescence unit 221 that a line shines in subregion 220, and then can make same row subregion
Interior luminescence unit 221 is lighted simultaneously, and then display may be implemented and drive, raising display effect synchronous with backlight drive, and
And can be controlled with luminescence unit 221 of the subregion to backlight module 200, improve contrast.
On the basis of above scheme, optionally, display panel includes viewing area and non-display area, and pixel 120 is set to
Viewing area；
Scan drive circuit is set to the first opposite side of non-display area and/or second side；Or scan drive circuit is set
It is placed in the stepped region of the third side of non-display area.
Figure 10 is a kind of structural schematic diagram of display panel 100 provided in an embodiment of the present invention, with reference to Figure 10, it illustrates
Scan drive circuit 110 is set to the case where the first side of non-display area, and wherein the first side of non-display area and second side can be
The two sides in non-display area direction x along Figure 10, scan drive circuit 110 connect each row pixel 120 by scan line, for each row
Pixel 120 provides scanning signal.Scan drive circuit 110 be set to non-display area in the opposite second side in the first side the case where in
This is similar, no longer shows.Also, scan drive circuit 110 can also be respectively set in the first side and second side, to reduce every side
Scan line item number.With reference to Figure 10, display panel 100 further includes data drive circuit 130, and data drive circuit passes through data
Line connects each column pixel 120, to provide data-signal for each column pixel 120.
Figure 11 is the structural schematic diagram of another display device provided in an embodiment of the present invention, with reference to Figure 11, it illustrates
Scan drive circuit 110 is set to the case where stepped region (dotted line outlines region in Figure 11) of the third side of non-display area.
1 is continued to refer to figure 1, on the basis of above scheme, optionally, display device further includes FPC400, backlight drive
Circuit 210 is arranged on FPC400, and scan drive circuit 110 and backlight drive circuit 210 are electrically connected by the cabling on FPC400
It connects.Figure 11 shows the structural schematic diagram of FPC400 display device in a flattened condition, and the setting of backlight drive circuit 210 is existed
On FPC400, the connection of scan drive circuit 110 and backlight drive circuit 210 can be made more convenient.
With reference to Fig. 2, on the basis of above scheme, optionally, display panel 100 includes viewing area and non-display area, is swept
It retouches driving circuit 110 and is set to the first opposite side of non-display area and/or second side, the control signal of scan drive circuit 110
Output end is positioned close to the side of FPC400.With reference to Fig. 2, the first side and opposite second side be non-display area in the x-direction
The case where two sides, Fig. 2 shows the first sides that scan drive circuit 110 is set to non-display area, the control of scan drive circuit 110
Signal output end processed is positioned close to the side of FPC400, can make scan drive circuit 110 and switch unit 300 and back
Wiring between light drive circuit 210 and switch unit 300 is more convenient, and shortens scan drive circuit 110 and switch unit
The length of signal wire between 300 and backlight drive circuit 210 and switch unit 300, so that scan drive circuit 110 exports
Electricity on signal wire of voltage loss of the control signal on signal wire and the driving signal that exports of backlight drive circuit 210
Crushing depletion is small.
On the basis of above scheme, with reference to Fig. 3, optionally, multiple scan drive circuits 110 are integrated in turntable driving core
On piece 500, backlight drive circuit 210 is integrated in backlight driving chip 600.
Scan drive circuit 110 is integrated on scanning drive chip, and backlight drive circuit 210 is integrated in backlight
On driving chip, scan drive circuit 110 and backlight drive circuit 210 can be made more integrated.
The embodiment of the invention also provides a kind of driving method of display device, Figure 12 is provided in an embodiment of the present invention aobvious
The flow chart of the driving method of showing device, the display device which can be used for that any embodiment of that present invention is driven to provide.
The display panel of display device includes viewing area and non-display area, and viewing area includes several sub- viewing areas, every sub- viewing area packet
At least one-row pixels are included, with reference to Figure 12, the driving method of the display device includes:
Step 710, pixel of the scanning signal output end into preset sub- viewing area of scan drive circuit export scanning
During signal, the switch list of the corresponding luminescence unit electrical connection in the viewing area control signal output Xiang Yuzi of scan drive circuit
The control terminal of member exports cut-off signals；
Step 720, scan drive circuit all pixels from scanning signal output end to preset sub- viewing area output
After scanning signal, the luminous subregion of the corresponding backlight module in the viewing area control signal output Xiang Yuzi of scan drive circuit
The control terminal of the switch unit of interior luminescence unit electrical connection exports Continuity signal, and the driving signal of backlight drive circuit output is logical
Cross the luminescence unit that switch unit is transmitted to the luminous subregion of backlight module corresponding with sub- viewing area.
The driving method of display device provided in this embodiment, by the scanning signal output end in scan drive circuit to
During pixel output scanning signal in preset sub- viewing area, the control signal output of scan drive circuit to sub- display
The control terminal of the switch unit of the corresponding luminescence unit electrical connection in area exports cut-off signals；The scanning signal of scan drive circuit is defeated
After all pixels output scanning signal of the outlet into preset sub- viewing area, the control signal output of scan drive circuit
The control terminal output of the switch unit of luminescence unit electrical connection in the luminous subregion of the corresponding backlight module in the viewing area Xiang Yuzi
The driving signal of Continuity signal, backlight drive circuit output is transmitted to backlight module corresponding with sub- viewing area by switch unit
Luminous subregion luminescence unit, and then can be scanned the pixel preset in sub- viewing area in scan drive circuit
When, it is not lighted with the luminescence unit for presetting the corresponding luminous subregion in sub- viewing area；And in scan drive circuit to default son
After the picture element scan of viewing area, the luminescence unit of luminous subregion corresponding with sub- viewing area is preset is lighted, and then can be real
It is now synchronous with backlight drive to display driving, improve display effect；And it is possible to realize to the subregion to shine in backlight module
Control improves contrast.
On the basis of above scheme, optionally, above-mentioned steps 720 include:
After pixel output scanning signal of the scanning signal output end of scan drive circuit into preset sub- viewing area,
And during the pixel in next sub- viewing area adjacent to preset viewing area exports scanning signal, the control of scan drive circuit
The switch unit of luminescence unit electrical connection in the luminous subregion of the corresponding backlight module in the viewing area signal output end Xiang Yuzi processed
Control terminal export Continuity signal；
The scanning signal output end of scan drive circuit owns to next sub- viewing area adjacent with preset viewing area
After pixel exports scanning signal, the control signal output of scan drive circuit is to backlight corresponding with preset sub- viewing area
The control terminal of the switch unit of luminescence unit electrical connection in the luminous subregion of mould group exports cut-off signals.
On the basis of above scheme, the driving method further include:
Before pixel output scanning signal of the scanning signal output end of scan drive circuit into preset sub- viewing area,
Luminescence unit in the luminous subregion of the corresponding backlight module in the viewing area control signal output Xiang Yuzi of scan drive circuit
The control terminal of the switch unit of electrical connection exports Continuity signal, and the driving signal of backlight drive circuit output is passed by switch unit
Transport to the luminescence unit of the luminous subregion of backlight module corresponding with sub- viewing area.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (12)
1. a kind of display device characterized by comprising
Display panel, the display panel include multiple scan drive circuits and multiple pixels, and the scan drive circuit includes
Multiple scanning signal output ends and multiple control signal output end, the scanning signal output end are the pixel by scan line
Export scanning signal；
Backlight module, the backlight module include backlight drive circuit and multiple luminous subregions, and the luminous subregion includes at least
One luminescence unit；The backlight drive circuit includes multiple signal output ends, and the signal output end is electrically connected to the hair
Light unit；
Multiple switch unit, multiple switch units are serially connected with respectively between the signal output end and the luminescence unit；
Each switch unit includes control terminal, and the control terminal of the switch unit and the control signal output correspond electricity
Connection, the switch unit are used for signal conduction or shutdown according to its control terminal.
2. display device according to claim 1, which is characterized in that the signal output end includes that multiple driving signals are defeated
Outlet and multiple reference voltage output terminals；The luminous subregion array arrangement, the switch unit further includes input terminal and output
End, the input terminal of the switch unit are electrically connected with the driving signal output end, and the output end of the switch unit is connected to
With the first pole of the luminescence unit to shine in subregion described in a line；The reference voltage output terminal is connected to described in same row
Second pole of the luminescence unit to shine in subregion.
3. display device described in claim 1, which is characterized in that the signal output end includes multiple driving signal outputs
End and multiple reference voltage output terminals；The luminous subregion array arrangement, the input terminal of the switch unit and the reference electricity
Press output end electrical connection, the output end of the switch unit is connected to a line and shines state the of the luminescence unit in subregion
Two poles；First pole of the luminescence unit in luminous subregion described in the driving signal output end connection same row.
4. display device according to claim 1, which is characterized in that the signal output end includes that multiple driving signals are defeated
Outlet and multiple reference voltage output terminals；It goes together luminescence unit lamp string in series, each luminous subregion includes one
A lamp string or the lamp string of several parallel connections, one end of each lamp string is electrically connected simultaneously in each luminous subregion
The driving signal output end is electrically connected to by a switch unit；Each lamp string is another in each luminous subregion
One end is electrically connected to a reference voltage output terminal.
5. display device according to claim 2, which is characterized in that the switch unit is transistor, the transistor
Control terminal of first pole as the switch unit, input terminal of second pole as the switch unit, third pole is as institute
State the output end of switch unit.
6. display device according to claim 1, which is characterized in that the display panel includes viewing area and non-display
Area, the pixel are set to the viewing area；
The scan drive circuit is set to the first opposite side of the non-display area and/or second side；Or the scanning is driven
Dynamic circuit is set to the stepped region of the third side of the non-display area.
7. display device according to claim 1, which is characterized in that further include FPC, the backlight drive circuit setting exists
On FPC, the scan drive circuit and the backlight drive circuit pass through the cabling electrical connection on the FPC.
8. display device according to claim 7, which is characterized in that the display panel includes viewing area and non-display
Area, the scan drive circuit are set to the first opposite side of the non-display area and/or second side, the scan drive circuit
Control signal output be positioned close to the side of the FPC.
9. display device according to claim 1, which is characterized in that multiple scan drive circuits are integrated in scanning and drive
On dynamic chip, the backlight drive circuit is integrated in backlight driving chip.
10. a kind of driving method of display device, which is characterized in that the driving method of the display device is applied to want such as right
Seek any display device of 1-9；
The display panel includes viewing area and non-display area, and the viewing area includes several sub- viewing areas, and each son is aobvious
Show that area includes that at least one-row pixels, the driving method includes:
Pixel of the scanning signal output end of the scan drive circuit into the preset sub- viewing area exports scanning signal
Period, the control signal output of the scan drive circuit are opened to what luminescence unit corresponding with the sub- viewing area was electrically connected
The control terminal for closing unit exports cut-off signals；
All pixels of the scanning signal output end of the scan drive circuit into the preset sub- viewing area
After exporting scanning signal, the control signal output of scan drive circuit is to backlight module corresponding with the sub- viewing area
The control terminal of the switch unit of luminescence unit electrical connection in the luminous subregion exports Continuity signal, the backlight drive circuit
The driving signal of output is transmitted to the luminous subregion of corresponding with sub- viewing area backlight module by switch unit
The luminescence unit.
11. the driving method of display device according to claim 10, which is characterized in that the driving method further include:
Pixel output of the scanning signal output end of the scan drive circuit into the preset sub- viewing area
Before scanning signal, the control signal output of scan drive circuit is to described in backlight module corresponding with the sub- viewing area
The control terminal output Continuity signal of the switch unit of the luminescence unit electrical connection to shine in subregion, the backlight drive circuit output
Driving signal be transmitted to described in the luminous subregion of backlight module corresponding with the sub- viewing area by switch unit
Luminescence unit.
12. the driving method of display device according to claim 10, which is characterized in that the scan drive circuit is swept
After retouching all pixel output scanning signals of the signal output end into the preset sub- viewing area, turntable driving
Luminescence unit of the control signal output of circuit into the luminous subregion of backlight module corresponding with the sub- viewing area
The control terminal of the switch unit of electrical connection exports Continuity signal, and the driving signal of the backlight drive circuit output is single by switch
Member is transmitted to the luminescence unit of the luminous subregion of backlight module corresponding with the sub- viewing area, comprising:
Pixel of the scanning signal output end of the scan drive circuit into the preset sub- viewing area exports scanning
After signal, and the scanning signal phase is exported in the pixel into the adjacent next sub- viewing area in the preset viewing area
Between, the control signal output of the scan drive circuit shines point to the described of backlight module corresponding with the sub- viewing area
The control terminal of the switch unit of luminescence unit electrical connection in area exports Continuity signal；
The scanning signal output end of the scan drive circuit is to the next sub- display adjacent with the preset viewing area
After all pixels output scanning signal in area, the control signal output of the scan drive circuit to the preset son
The control terminal of the switch unit of luminescence unit electrical connection in the luminous subregion of the corresponding backlight module in viewing area, which exports, closes
Break signal.
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| CN201811594073.2A CN109493811A (en) | 2018-12-25 | 2018-12-25 | A kind of display device and its driving method |
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| WO2023206078A1 (en) * | 2022-04-26 | 2023-11-02 | 京东方科技集团股份有限公司 | Driving method for light-emitting substrate, driving circuit, and display apparatus |
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