CN104240650B - The control method of back light source brightness and device under a kind of wide-screen film display pattern - Google Patents
The control method of back light source brightness and device under a kind of wide-screen film display pattern Download PDFInfo
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- CN104240650B CN104240650B CN201410432142.5A CN201410432142A CN104240650B CN 104240650 B CN104240650 B CN 104240650B CN 201410432142 A CN201410432142 A CN 201410432142A CN 104240650 B CN104240650 B CN 104240650B
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Abstract
The invention discloses control method and the device of back light source brightness under a kind of wide-screen film display pattern, the method includes: when showing image to be displayed in display screen, determines the backlight subarea needing to close backlight in described display screen；Determine described the first back light source brightness value needing to close the adjacent backlight subarea of the backlight subarea of backlight；Described first back light source brightness value is turned down, obtain the second back light source brightness value, when showing described image to be displayed by described display screen, the back light source brightness value of described adjacent backlight subarea is set to the method that described second back light source brightness value is provided by the embodiment of the present invention, can control the light leakage phenomena of the backlight of display screen, the image simultaneously not shown display screen produces impact.
Description
Technical field
The present invention relates to backlight control field, particularly relate to backlight under a kind of wide-screen film display pattern
The control method of brightness and device.
Background technology
Cause frame squeezed fluid crystal panel because liquid crystal display screen assembles to fix, cause corner liquid crystal molecule arrangement to be sent out
Changing；Or make reason because of blooming piece and cause display screen local uneven；Or because display screen local is fixing not
Jail or expanded by heating produce degradation situation under surface smoothness, all can cause in the more weak viewing condition of ambient light
Under, when viewing picture material is black picture or low-brightness scene, the light leakage phenomena of easily perceivable liquid crystal, from
And damage image frame quality.Especially when playing the film of some ratio form, such as wide screen movies, its
Inherently with black region；Or due to LCDs length and width size than the length-width ratio with broadcasting film not
With, and black region can be there is in display screen, if the length-width ratio of the display screen of LCD TV is 16:9,
And the length-width ratio of width screen movies is approximately 21:9, the most as shown in Figure 1.
Under wide-screen film display pattern, the black region in display screen can produce light leakage phenomena, and reason has
The following aspects: blooming piece causes display screen local uneven because making reason；Because display screen local is fixing
Loosely or expanded by heating produce surface smoothness decline；Frame extruding is caused to cause showing because display screen assembles to fix
The corner light leak of display screen.When picture material is black picture or low-brightness scene, in the sight that ambient light is more weak
Under the conditions of seeing, it is easy for the light leakage phenomena of perception liquid crystal, thus damages image frame quality.
For this under wide-screen film display pattern, need to divide backlight corresponding for the black region in display screen
The backlight in district is closed, such that it is able to eliminate light leakage phenomena.But, although close black region corresponding
, still there is certain light leak and the problem of black image contrast decline in backlight.
Generation in order to avoid problem above, it is now desired to control the brightness of backlight, but how to control the back of the body
Light source had both been avoided that the light leakage phenomena of display screen, and the image simultaneously not shown display screen produces impact, mesh
Before also there is no preferable method.
Summary of the invention
The embodiment of the present invention provide back light source brightness under a kind of wide-screen film display pattern control method and
Device, in order to solve to control in prior art the light leakage phenomena of the backlight of display screen, simultaneously the most not to display
The problem that the image of screen display produces impact.
The embodiment of the present invention provides the control method of back light source brightness under a kind of wide-screen film display pattern, should
Method includes:
When showing image to be displayed in display screen, determine the back of the body needing to close backlight in described display screen
Light subregion；
Determine described the first back light source brightness needing to close the adjacent backlight subarea of the backlight subarea of backlight
Value；
Described first back light source brightness value is turned down, obtains the second back light source brightness value, by described display
When screen shows described image to be displayed, the back light source brightness value of described adjacent backlight subarea is set to described the
Two back light source brightness values.
It is also preferred that the left the described backlight subarea needing closedown backlight is first area and second area in display screen
Any one corresponding backlight subarea, described first area is predetermined and is positioned at the district at display top
Territory, described second area is predetermined and is positioned at the region bottom display screen.
It is also preferred that the left described, described first back light source brightness value is turned down, obtain the second back light source brightness value, bag
Include:
According to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described first backlight
The backlight weighted value that source brightness value is corresponding；
Described backlight weighted value is multiplied with described first back light source brightness value, obtains described second backlight
Brightness value, described backlight weighted value is more than 0 and less than 1.
It is also preferred that the left described when showing image to be displayed in display screen, determine and described display screen needs close
Close the backlight subarea of backlight, including:
Determine and whether show described image to be displayed with wide-screen film pattern, if so, in described display screen
Then when wide-screen film display pattern display image, by the backlight of backlight subarea corresponding for described first area
Source is closed；
Determine in described second area and whether show captions, if it is not, then by backlight corresponding for described second area
The backlight of subregion is closed.
Determine in described second area whether show captions it is also preferred that the left described, including:
If at least a line image pixel of described second image, including at least the grey decision-making having a pixel
It is the first grey decision-making, it is determined that described second area display captions, described first grey decision-making is 255.
The embodiment of the present invention provides the control device of back light source brightness under a kind of wide-screen film display pattern, should
Device includes:
Backlight is closed and is determined unit, in time showing image to be displayed in display screen, determines described aobvious
Display screen needs to close the backlight subarea of backlight；
Adjacent backlight subarea backlight determines unit, for determining the described backlight subarea needing to close backlight
The first back light source brightness value of adjacent backlight subarea；
Backlight control unit, for described first back light source brightness value being turned down, obtains the second backlight bright
Angle value, when showing described image to be displayed by described display screen, by the backlight of described adjacent backlight subarea
Source brightness value is set to described second back light source brightness value.
It is also preferred that the left the described backlight subarea needing closedown backlight is first area and second area in display screen
Any one corresponding backlight subarea, described first area is predetermined and is positioned at the district at display top
Territory, described second area is predetermined and is positioned at the region bottom display screen.
It is also preferred that the left described backlight control unit specifically for:
According to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described first backlight
The backlight weighted value that source brightness value is corresponding；
Described backlight weighted value is multiplied with described first back light source brightness value, obtains described second backlight
Brightness value, described backlight weighted value is more than 0 and less than 1.
It is also preferred that the left described backlight close determine unit specifically for:
Determine and whether show described image to be displayed with wide-screen film pattern, if so, in described display screen
Then when wide-screen film display pattern display image, by the backlight of backlight subarea corresponding for described first area
Source is closed；
Determine in described second area and whether show captions, if it is not, then by backlight corresponding for described second area
The backlight of subregion is closed.
It is also preferred that the left described backlight close determine unit specifically for:
If at least a line image pixel of described second image, including at least the grey decision-making having a pixel
It is the first grey decision-making, it is determined that described second area display captions, described first grey decision-making is 255.
The method implementing according to the present invention to provide, when showing image to be displayed, if backlight subarea is in backlight
Source closed mode, then be adjusted the brightness with the backlight of the adjacent backlight subarea of this backlight subarea, will
The back light source brightness value of adjacent backlight subarea weights by being less than the backlight weighted value of 1 more than 0 so that phase
The back light source brightness value of adjacent backlight subarea diminishes.Can not only eliminate by this method owing to adjacent backlight is divided
The light leakage phenomena that the diffusion optical guide of the backlight subarea after backlight closedown is caused by the backlight in district, promotes simultaneously
The contrast of shown image in backlight subarea.
Accompanying drawing explanation
Fig. 1 is to show the schematic diagram with black region image in display screen；
The control of back light source brightness under a kind of wide-screen film display pattern that Fig. 2 provides for the embodiment of the present invention
Method flow diagram；
The display screen dividing mode that Fig. 3 is used by 1D or 1.5D local light regulating technology；
Fig. 4 is the schematic diagram that wide-screen film display mode image shows in display screen；
Fig. 5 is that wide-screen film shows mode image schematic diagram of first area in display screen；
Fig. 6 is that wide-screen film shows mode image schematic diagram of second area in display screen；
The control of back light source brightness under a kind of wide-screen film display pattern that Fig. 7 provides for the embodiment of the present invention
Structure drawing of device.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright it is described in further detail, it is clear that described embodiment is only some embodiments of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under creative work premise, broadly fall into the scope of protection of the invention.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As in figure 2 it is shown, back light source brightness under a kind of wide-screen film display pattern of embodiment of the present invention offer
Control method flow chart, the method includes:
Step 201: when showing image to be displayed in display screen, determines and needs in described display screen to close
The backlight subarea of backlight；
Step 202: determine described first back of the body needing to close the adjacent backlight subarea of the backlight subarea of backlight
Light-source brightness value；
Step 203: described first back light source brightness value turned down, obtain the second back light source brightness value, logical
Cross described display screen when showing described image to be displayed, the back light source brightness value of described adjacent backlight subarea is set
It is set to described second back light source brightness value.
Display screen, when showing image, needs backlight module to provide lasting backlight, in the prior art,
Backlight is in long bright state often, and the bright meeting of backlight length causes the image that originally need not backlight aobvious
When showing, picture contrast weakens, and the phenomenon such as light leak.
The backlight module of display screen is divided by the most general local light modulation (Local Dimming) technology of passing through
For multiple backlight modules, the display screen area that each backlight module covers, referred to as backlight subarea, to each back of the body
The backlight of light subregion individually controls, and can close the backlight in this region when this backlight subarea need not backlight
Source.
As it is shown on figure 3, the display screen dividing mode used by 1D or 1.5D local light regulating technology, Fig. 3
Middle display screen being divided into 16 backlight subarea, be the most laterally divided into 8 equal portions, longitudinally divided is 2 etc.
Part.The brightness of backlight, while providing backlight, can be adjusted, backlight module meeting by backlight module
According to the brightness that image to be displayed needs, back light source brightness is adjusted.Display screen in the embodiment of the present invention
Refer generally to LCD.
Backlight module, by receiving wide-screen film display pattern switching command, determines the figure of display in display screen
Seem no with wide-screen film display pattern show.
The embodiment of the present invention determines in the following manner with wide-screen film display pattern display image:
First, obtain image to be displayed, determine that described image to be displayed shows first area in display screen
The first image and display in described display screen the second image of second area, described first area is pre-
First determining and be positioned at the region at display top, described second area is predetermined and is positioned at bottom display screen
Region；
Then, the pixel gray level value of pixel in described first image and described second image is obtained；
Finally, if the mean pixel grey decision-making of all pixels in described first image and described second image
It is respectively less than first threshold, then judges to show described image to be displayed with wide-screen film display pattern；Or,
If the mean pixel grey decision-making of all pixels is less than described first threshold, and described second in described first image
Pixel gray level value in image is that the quantity proportion of the pixel of 0 is more than Second Threshold, then judge with wide silver
Curtain Cine mode pattern shows described image to be displayed.
As shown in Figure 4, when in display screen, the image of display enters wide-screen film display pattern, at display screen
Top and bottom formed wide-screen film display pattern distinctive fixed black region, in the embodiment of the present invention
In be called first area and second area, first area is display screen top under wide-screen film display pattern
The fixed black region in portion, second area is the fixed black under wide-screen film display pattern bottom display screen
Region.Correspondence backlight subarea, first area 1,9, second area correspondence backlight subarea 8,16, in order to reduce
The light leakage phenomena impact on these area images, these four backlight subarea are showing with wide-screen film display pattern
Diagram as time can close backlight.
After determining that in display screen, image to be displayed is wide-screen film display pattern, at display wide-screen film
The backlight of part backlight subarea in display screen is closed during the image of display pattern.Show at display wide-screen film
Show the backlight specifically closing which backlight subarea in pattern, the most in two kinds of situation:
As it is shown in figure 5, the first situation, if the pixel value of the pixel of the image of display is complete in backlight subarea
Portion is 0, and the most all pixels are all black, then now need not open backlight, but due to
The existence of noise, the pixel value of some pixel is not 0, so the embodiment of the present invention will be treated in backlight subarea
The average pixel value of the pixel of display image is less than first threshold, as need not open the condition of backlight,
Preferably, this first threshold value is between 0 to 20.
The second situation, without Subtitle Demonstration in the backlight subarea of second area.During according to display captions, image
The most whether the feature of the grey decision-making of middle pixel determines has Subtitle Demonstration.As shown in Figure 6, second
When showing captions in the backlight subarea in region, in backlight subarea, the grey decision-making of image to be displayed pixel is main with 0,
The grey decision-making also having partial pixel is the first grey decision-making, and the first grey decision-making is generally 255.To this end, use such as
Under type judges the most whether there is Subtitle Demonstration: if at least a line image of described second image
In pixel, it is the first grey decision-making including at least there being the grey decision-making of a pixel, it is determined that described second area shows
Show that captions, described first grey decision-making are 255.When the backlight subarea of second area is unsatisfactory for conditions above,
It is assured that in this region that, without Subtitle Demonstration, the backlight of this backlight subarea can be closed.
In order to improve the accuracy of judgement, it is also possible on the basis of this image to be displayed meets above-mentioned condition,
Increase a Rule of judgment, it may be assumed that determine with this image to be displayed before N frame consecutive image show in display screen
Time, if all show with wide-screen film display pattern, if, it is determined that this image to be displayed is aobvious
Being shown as wide-screen film display pattern in display screen, preferential, N is at least above 10.
After determining the backlight subarea needing to close backlight in wide-screen film display pattern, this backlight is divided
District just can reduce, when showing image, the impact that light leakage phenomena is brought, but can not thoroughly avoid light leakage phenomena,
Because the light of the backlight of its adjacent backlight subarea can be diffused into this backlight subarea, thus causes light leakage phenomena etc.
Problem.
Therefore to weaken the light diffusion of the adjacent backlight subarea of this backlight subarea, need having had been switched off the back of the body
The back light source brightness value of the adjacent backlight subarea of the backlight subarea of light source is adjusted.Concrete, in display screen
Image to be displayed shows being defined as wide-screen film display pattern, and by the first area of display screen and the
After the backlight of the backlight subarea that two regions are corresponding is closed, determine first area and the second area of display screen
First back light source brightness value of the adjacent backlight subarea of corresponding backlight subarea；By described first back light source brightness
Value is turned down, and obtains the second back light source brightness value；When showing described image to be displayed by display screen, by institute
The back light source brightness value stating adjacent backlight subarea is set to described second back light source brightness value.
By reducing the back light source brightness value of adjacent backlight subarea, can reduce the back of the body having been switched off backlight
The light leak impact of light subregion, but due to the adjacent backlight subarea the first back light source brightness value when showing image
Go to determine according to image pixel, if that the first back light source brightness value is adjusted is the lowest, the adjacent back of the body can be affected
The display effect of light subregion.Can by the way of each back light source brightness value is arranged backlight weighted value,
I.e. the first light-source brightness value of adjacent backlight subarea can be turned down, reduce the image shown simultaneously as far as possible
Impact.
Concrete, according to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described
The backlight weighted value that first back light source brightness value is corresponding；By described backlight weighted value and described first backlight
Source brightness value is multiplied, and obtains described second back light source brightness value, and described backlight weighted value is more than 0 and is less than
1。
When backlight weighted value is several between 0 to 1, the back light source brightness value after being weighted can be than the former back of the body
Light-source brightness value is little.After after weighting, back light source brightness value diminishes, impact when around spreading also can be become by it
Little.By this method the adjacent backlight subarea of the backlight subarea that backlight is closed is processed, Ke Yixiao
The light of the weak backlight due to adjacent backlight subarea spreads the light leakage phenomena brought.
Backlight weighted value can also be the number more than 1, the back light source brightness value meeting after being at this moment weighted
Become big, the saturation of display image can be strengthened.
Back light source brightness value and the mapping relations of backlight weighted value, can be real by the way of artificial setting
Existing, it is also possible to by the way of experiment.The backlight light diffusion when different brightness value is obtained by experiment
Data, arrange a backlight weighted value according to the data of light diffusion to different back light source brightness values.
Concrete, by the way of experiment, determine the back light source brightness value mapping relations with backlight weighted value
Flow process is as follows: under dark room conditions, the most only lights the backlight of each backlight subarea, it is thus achieved that carry on the back in difference
The data of the light diffusion under light-source brightness value, finally obtain the back light source brightness value data with light diffusion
Fitting function.According to fitting function, different back light source brightness values are arranged different backlight weighted value, at light
When diffusance is big, arranged by the backlight weighted value of corresponding back light source brightness value is less, and light diffusance is little
Time, arranged by the backlight weighted value of corresponding back light source brightness value is relatively big, is specifically as the criterion with reality measurement.
Based on identical technology design, the embodiment of the present invention also provides for a kind of wide-screen film display pattern lower back
The control device of light-source brightness, this device can perform said method embodiment.
As it is shown in fig. 7, the embodiment of the present invention provides back light source brightness under a kind of wide-screen film display pattern
Controlling device, this device includes:
Backlight is closed and is determined unit 701, in time showing image to be displayed in display screen, determines institute
State the backlight subarea needing to close backlight in display screen；
Adjacent backlight subarea backlight determines unit 702, for determining the described backlight needing to close backlight
First back light source brightness value of the adjacent backlight subarea of subregion；
Backlight control unit 703, for described first back light source brightness value being turned down, obtains the second backlight
Source brightness value, when showing described image to be displayed by described display screen, by described adjacent backlight subarea
Back light source brightness value is set to described second back light source brightness value.
It is also preferred that the left the described backlight subarea needing closedown backlight is first area and second area in display screen
Any one corresponding backlight subarea, described first area is predetermined and is positioned at the district at display top
Territory, described second area is predetermined and is positioned at the region bottom display screen.
It is also preferred that the left described backlight control unit 703 specifically for:
According to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described first backlight
The backlight weighted value that source brightness value is corresponding；
Described backlight weighted value is multiplied with described first back light source brightness value, obtains described second backlight
Brightness value, described backlight weighted value is more than 0 and less than 1.
It is also preferred that the left described backlight close determine unit 701 specifically for:
Determine and whether show described image to be displayed with wide-screen film pattern, if so, in described display screen
Then when wide-screen film display pattern display image, by the backlight of backlight subarea corresponding for described first area
Source is closed；
Determine in described second area and whether show captions, if it is not, then by backlight corresponding for described second area
The backlight of subregion is closed.
It is also preferred that the left described backlight close determine unit 701 specifically for:
If at least a line image pixel of described second image, including at least the grey decision-making having a pixel
It is the first grey decision-making, it is determined that described second area display captions, described first grey decision-making is 255.
The method implementing according to the present invention to provide, when showing image to be displayed, if backlight subarea is in backlight
Source closed mode, then be adjusted the brightness with the backlight of the adjacent backlight subarea of this backlight subarea, will
The back light source brightness value of adjacent backlight subarea weights by being less than the backlight weighted value of 1 more than 0 so that phase
The back light source brightness value of adjacent backlight subarea diminishes.Can not only eliminate by this method owing to adjacent backlight is divided
The light leakage phenomena that the diffusion optical guide of the backlight subarea after backlight closedown is caused by the backlight in district, promotes simultaneously
The contrast of shown image in backlight subarea.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. the control method of back light source brightness under a wide-screen film display pattern, it is characterised in that should
Method includes:
When showing image to be displayed in display screen, determine the back of the body needing to close backlight in described display screen
Light subregion；
Determine described the first back light source brightness needing to close the adjacent backlight subarea of the backlight subarea of backlight
Value；
Described first back light source brightness value is turned down, obtains the second back light source brightness value, by described display
When screen shows described image to be displayed, the back light source brightness value of described adjacent backlight subarea is set to described the
Two back light source brightness values.
2. the method for claim 1, it is characterised in that the described backlight needing to close backlight
Subregion is first area and any one backlight subarea corresponding to second area, described firstth district in display screen
Territory is predetermined and is positioned at the region at display top, and described second area is for predefining and being positioned at display screen
The region of bottom.
3. method as claimed in claim 2, it is characterised in that described by described first back light source brightness
Value is turned down, and obtains the second back light source brightness value, including:
According to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described first backlight
The backlight weighted value that source brightness value is corresponding；
Described backlight weighted value is multiplied with described first back light source brightness value, obtains described second backlight
Brightness value, described backlight weighted value is more than 0 and less than 1.
4. method as claimed in claim 2, it is characterised in that described show in display screen to be shown
During image, determine the backlight subarea needing to close backlight in described display screen, including:
Determine and whether show described image to be displayed with wide-screen film pattern, if so, in described display screen
Then when wide-screen film display pattern display image, by the backlight of backlight subarea corresponding for described first area
Source is closed；
Determine in described second area and whether show captions, if it is not, then by backlight corresponding for described second area
The backlight of subregion is closed.
5. method as claimed in claim 4, it is characterised in that described determine in described second area be
No display captions, including:
If at least a line image pixel of the second image, it is the including at least the grey decision-making having a pixel
One grey decision-making, it is determined that described second area display captions, described first grey decision-making is 255.
6. the control device of back light source brightness under a wide-screen film display pattern, it is characterised in that should
Device includes:
Backlight is closed and is determined unit, in time showing image to be displayed in display screen, determines described aobvious
Display screen needs to close the backlight subarea of backlight；
Adjacent backlight subarea backlight determines unit, for determining the described backlight subarea needing to close backlight
The first back light source brightness value of adjacent backlight subarea；
Backlight control unit, for described first back light source brightness value being turned down, obtains the second backlight bright
Angle value, when showing described image to be displayed by described display screen, by the backlight of described adjacent backlight subarea
Source brightness value is set to described second back light source brightness value.
7. device as claimed in claim 6, it is characterised in that the described backlight needing to close backlight
Subregion is first area and any one backlight subarea corresponding to second area, described firstth district in display screen
Territory is predetermined and is positioned at the region at display top, and described second area is for predefining and being positioned at display screen
The region of bottom.
8. device as claimed in claim 7, it is characterised in that described backlight control unit is specifically used
In:
According to the mapping relations between back light source brightness value and backlight weighted value, it is thus achieved that with described first backlight
The backlight weighted value that source brightness value is corresponding；
Described backlight weighted value is multiplied with described first back light source brightness value, obtains described second backlight
Brightness value, described backlight weighted value is more than 0 and less than 1.
9. device as claimed in claim 7, it is characterised in that described backlight is closed and determined that unit has
Body is used for:
Determine and whether show described image to be displayed with wide-screen film pattern, if so, in described display screen
Then when wide-screen film display pattern display image, by the backlight of backlight subarea corresponding for described first area
Source is closed；
Determine in described second area and whether show captions, if it is not, then by backlight corresponding for described second area
The backlight of subregion is closed.
10. device as claimed in claim 9, it is characterised in that described backlight is closed and determined that unit has
Body is used for:
If at least a line image pixel of the second image, it is the including at least the grey decision-making having a pixel
One grey decision-making, it is determined that described second area display captions, described first grey decision-making is 255.
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| CN201410432142.5A CN104240650B (en) | 2014-08-28 | 2014-08-28 | The control method of back light source brightness and device under a kind of wide-screen film display pattern |
| US14/547,508 US10165217B2 (en) | 2014-08-28 | 2014-11-19 | Backlight source control method of display device, display device and storage medium |
| US16/206,254 US10965898B2 (en) | 2014-08-28 | 2018-11-30 | Backlight source control method of display device, display device and storage medium |
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| CN105895031A (en) * | 2015-12-08 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Display light leakage improving method and device |
| CN109243384B (en) * | 2018-11-09 | 2020-05-29 | 京东方科技集团股份有限公司 | Display device, driving method thereof, driving apparatus thereof, and computer readable medium |
| CN111341254B (en) * | 2018-12-19 | 2021-06-15 | 北京小米移动软件有限公司 | Brightness adjusting method and device of display screen |
| CN111327948B (en) * | 2020-02-21 | 2021-09-24 | 深圳创维－Rgb电子有限公司 | Automatic matching method and device for movie image mode and computer readable storage medium |
| CN113990263B (en) * | 2021-10-26 | 2022-11-01 | Tcl华星光电技术有限公司 | Backlight processing method and device for display screen, storage medium and electronic equipment |
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| TW200731188A (en) * | 2006-02-09 | 2007-08-16 | Gigno Technology Co Ltd | Liquid crystal display device and controlling method thereof |
| KR101373400B1 (en) * | 2006-12-27 | 2014-03-14 | 엘지디스플레이 주식회사 | Liquid crystal display device and method driving of the same |
| CN101222810A (en) * | 2008-01-18 | 2008-07-16 | 上海广电光电子有限公司 | Directly-down type LCD backlight source control device |
| JP4806102B2 (en) * | 2008-06-27 | 2011-11-02 | シャープ株式会社 | Control device for liquid crystal display device, liquid crystal display device, control method for liquid crystal display device, program, and recording medium |
| CN101751864A (en) * | 2008-12-19 | 2010-06-23 | 康佳集团股份有限公司 | Backlight control method, system and electronic display apparatus |
| JP2011013458A (en) * | 2009-07-02 | 2011-01-20 | Panasonic Corp | Liquid crystal display device |
| CN101673521B (en) * | 2009-08-18 | 2014-01-01 | 北京巨数数字技术开发有限公司 | Liquid crystal display device and method for processing digital image signal |
| JP5460435B2 (en) * | 2010-04-09 | 2014-04-02 | 日立コンシューマエレクトロニクス株式会社 | Image display device and control method of image display device |
| CN102087818A (en) * | 2010-04-13 | 2011-06-08 | Tcl集团股份有限公司 | Liquid crystal display system |
| JP5661336B2 (en) * | 2010-05-28 | 2015-01-28 | 日立マクセル株式会社 | Liquid crystal display |
| CN101989408B (en) * | 2010-11-29 | 2012-05-30 | 广州创维平面显示科技有限公司 | Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group |
| CN102930831B (en) * | 2012-11-06 | 2015-05-20 | 青岛海信信芯科技有限公司 | Liquid crystal display screen image displaying method, device and liquid crystal display television |
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