CN107342054A - Display device, display control method and display control unit - Google Patents
Display device, display control method and display control unit Download PDFInfo
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- CN107342054A CN107342054A CN201710574816.9A CN201710574816A CN107342054A CN 107342054 A CN107342054 A CN 107342054A CN 201710574816 A CN201710574816 A CN 201710574816A CN 107342054 A CN107342054 A CN 107342054A
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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
- G09G3/3413—Details of control of colour illumination sources
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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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- General Physics & Mathematics (AREA)
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The disclosure is directed to a kind of display device, display control method and display control unit, it is related to display technology field.The display control method includes counting the view data of each pixel in the predeterminable area of frame to be shown, determines the first luminance threshold of predeterminable area, and corrects the first luminance threshold and obtain the second luminance threshold；Judge whether the brightness value of each pixel of predeterminable area is less than the second luminance threshold；When judging that the brightness value of pixel of predeterminable area is not less than the second luminance threshold, the view data of the pixel is corrected according to the first multiple；When judging that the brightness value of pixel of predeterminable area is less than the second luminance threshold, the view data of the pixel is corrected according to the second multiple for being more than the first multiple；The luminance-reduction coefficient of backlight is determined according to the first luminance threshold and the second luminance threshold, and reduces the luminosity of backlight according to this.The disclosure can improve light leakage phenomena, improve the contrast of liquid crystal display displays images, reduce the power consumption of display device.
Description
Technical field
This disclosure relates to display technology field, in particular to a kind of display control method, display control unit and shows
Showing device.
Background technology
At present, people are increasing to portable mobile apparatus demand, LCD (Liquid Crystal Display, liquid crystal
Display) important devices as human-computer interaction interface, it has also become the bridge between people and mobile device.People is to color and information
The demand of content so that liquid crystal display must have enough resolution ratio, sufficient color and relatively large viewing area
Domain, the raising of liquid crystal display quality also results in the increase of display device power consumption, therefore improves the display product of liquid crystal display
Matter, the power consumption for reducing display device have become a kind of trend.
Liquid crystal display generally includes display module and backlight module, and wherein backlight module is related to dynamic backlight control skill
Art.Dynamic backlight control technology includes global dynamic light adjustment and regional dynamics light modulation two types, global dynamic light adjustment principle
To regard whole display picture as an entirety be controlled to global brightness, the structure of the light-dimming method is relatively easy, behaviour
Make phenomenon also uncomplicated, but that image display distortion still occurs when carrying out dynamic light adjustment of getting up, while this light modulation side
Balance between the method brightness upper zone and darker area difficult to realize to all videos picture, for the liquid of large-size
Crystal display screen, the display effect of global dynamic light adjustment are relatively poor.
Regional dynamics light modulation principle is that whole display picture is divided into multiple regions to be adjusted to backlight subregion
Section, i.e., analyzed after display picture is received using brightness statistics and combination controlling method enters action to the backlight illumination of each several part
State regulation is displayed contrast with improving, but this light-dimming method still has the brightness of optical crosstalk and display image
Accurately phenomenon does not dim the shortcomings that maximum, it is necessary to which comparatively huge backlight source driving circuit is also regional dynamics.
Therefore, it is necessary to study a kind of display control method and device, and then improve display quality.
It should be noted that information is only used for strengthening the reason to the background of the disclosure disclosed in above-mentioned background section
Solution, therefore can include not forming the information to prior art known to persons of ordinary skill in the art.
The content of the invention
The purpose of the disclosure is to provide a kind of display control method, display control unit and display device, and then at least
One or more problem caused by the limitation of correlation technique and defect is overcome to a certain extent.
According to an aspect of this disclosure, there is provided a kind of display control method, applied to including liquid crystal display panel with
And the display device of backlight；The display control method includes：
The view data of each pixel in the predeterminable area of frame to be shown is counted, determines the first of the predeterminable area
Luminance threshold, and correct first luminance threshold and obtain the second luminance threshold；
Judge whether the brightness value of each pixel of the predeterminable area is less than second luminance threshold；
When judging that the brightness value of the pixel of the predeterminable area is not less than second luminance threshold, according to first
Multiple corrects the view data of the pixel；
When judging that the brightness value of the pixel of the predeterminable area is less than second luminance threshold, foundation is more than institute
The second multiple for stating the first multiple corrects the view data of the pixel；
The luminance-reduction coefficient of the backlight, and root are determined according to first luminance threshold and the second luminance threshold
The luminosity of the backlight is reduced according to the luminance-reduction coefficient.
In a kind of exemplary embodiment of the disclosure, first luminance threshold for determining the predeterminable area includes：
To the view data of each pixel in the predeterminable area of frame to be shown according to three primary colours composition principle, luminance equation is utilized
Determine the brightness value of each pixel；
The brightness value of each pixel in the predeterminable area of frame to be shown is counted to determine the first of the predeterminable area
Luminance threshold.
In a kind of exemplary embodiment of the disclosure, the display control method also includes：
The view data of the correction pixel is determined according to first luminance threshold and the second luminance threshold
First multiple and the second multiple.
In a kind of exemplary embodiment of the disclosure, the display control method also includes：
Data voltage is provided according to the described image data after correction.
In a kind of exemplary embodiment of the disclosure, the luminance-reduction coefficient for determining the backlight includes：
According to first luminance threshold and the second luminance threshold and determine the backlight with reference to gamma correction curve
Luminance-reduction coefficient.
In a kind of exemplary embodiment of the disclosure, the view data for correcting the pixel includes：
The view data of the pixel of the predeterminable area is entered with first multiple or the second multiple by multiplier
Described image data after row computing generation correction.
In a kind of exemplary embodiment of the disclosure, the predeterminable area includes the Zone Full of the frame to be shown.
In a kind of exemplary embodiment of the disclosure, the frame to be shown includes more sub-regions, the predeterminable area
For each in the multiple subregion.
According to another aspect of the disclosure, there is provided a kind of display control unit, applied to including liquid crystal display panel with
And the display device of backlight, the display control unit include：
Luminance threshold determining unit, the view data of each pixel in the predeterminable area of frame to be shown is counted, it is determined that
First luminance threshold of the predeterminable area, and correct first luminance threshold and obtain the second luminance threshold；
Pixel intensity judging unit, judges whether the brightness value of each pixel of the predeterminable area is less than second brightness
Threshold value；
First data correction unit, it is bright not less than described second in the brightness value for judging the pixel of the predeterminable area
When spending threshold value, the view data of the pixel is corrected according to the first multiple；
Second data correction unit, it is less than second brightness in the brightness value for judging the pixel of the predeterminable area
During threshold value, the view data of the pixel is corrected according to the second multiple for being more than first multiple；
Back light source brightness control unit, the backlight is determined according to first luminance threshold and the second luminance threshold
Luminance-reduction coefficient, and reduce according to the luminance-reduction coefficient luminosity of the backlight.
According to another aspect of the disclosure, there is provided a kind of display device, including liquid crystal display panel and backlight, institute
Display device is stated also including the display control unit as described in above-mentioned any one.
As shown from the above technical solution, it is the advantages of the display control method of the disclosure with good effect：
A kind of display control method that the disclosure provides, applied to the display dress including liquid crystal display panel and backlight
Put, including：
Counted by the raw image data of each pixel in the predeterminable area to frame to be shown to determine the first brightness
Threshold value, further correction determine backlight to determine the second luminance threshold according to the first luminance threshold and the second luminance threshold
Luminance-reduction coefficient determines the view data after correction simultaneously to reduce the luminosity of backlight and correct raw image data
The brightness of liquid crystal display is improved according to this.
On the one hand this display control method in the case where the gray scale of display image is relatively low, reduces the backlight of backlight
It brightness, can so improve the light leakage phenomena under low-light level background, while improve image data value to improve the light transmittance of liquid crystal,
It is consistent the output brightness before and after adjustment；On the other hand, before display output brightness before and after keeping adjusting is basically identical
Put, due to improving light leakage phenomena, and then improve the picture contrast under low-light level background；Another further aspect, due to reducing
The luminosity of backlight, the power output of backlight can be reduced, and then the overall power of display device can be reduced.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.It should be evident that drawings in the following description are only the disclosure
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 schematically shows the flow chart of display control method in disclosure exemplary embodiment.
Fig. 2 schematically shows functional structure chart in disclosure exemplary embodiment.
Fig. 3 schematically shows the simulation block diagram of display control unit in disclosure exemplary embodiment.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot
Structure or characteristic can be incorporated in one or more embodiments in any suitable manner.
In addition, accompanying drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical accompanying drawing mark in figure
Note represents same or similar part, thus will omit repetition thereof.Some block diagrams shown in accompanying drawing are work(
Can entity, not necessarily must be corresponding with physically or logically independent entity.These work(can be realized using software form
Energy entity, or these functional entitys are realized in one or more hardware modules or integrated circuit, or at heterogeneous networks and/or place
These functional entitys are realized in reason device device and/or microcontroller device.
In correlation technique, because the brightness of traditional LCD backlight is constant, along with spies such as the structure and materials of liquid crystal
Point, LCDs can cause light leakage phenomena when being shown to dark picture.The phenomenon wastes the energy, while goes back shadow
The contrast of liquid crystal display displays images is rung.
To solve the display defect in above-mentioned correlation technique, the thinking that the disclosure provides is when the gray scale of display image is relative
When relatively low, the brightness of backlight can suitably be reduced, at the same time by the proportional corresponding raising of LCD light transmittance,
On the premise of keeping brightness of image basically identical, light leakage phenomena is improved.
A kind of display control method is provide firstly in this example embodiment, shown in reference picture 1, Fig. 2, the display control
Method, applied to the display device for including liquid crystal display panel and backlight；It can include：
Step S1, the view data of each pixel in the predeterminable area of frame to be shown is counted, determines the preset areas
First luminance threshold in domain, and correct first luminance threshold and obtain the second luminance threshold；
Step S2, judges whether the brightness value of each pixel of the predeterminable area is less than second luminance threshold；
Step S3, when judging that the brightness value of the pixel of the predeterminable area is not less than second luminance threshold,
The view data of the pixel is corrected according to the first multiple；
When judging that the brightness value of the pixel of the predeterminable area is less than second luminance threshold, foundation is more than institute
The second multiple for stating the first multiple corrects the view data of the pixel；
Step S4, the luminance-reduction system of the backlight is determined according to first luminance threshold and the second luminance threshold
Number, and according to the luminosity of the luminance-reduction coefficient reduction backlight.
According to the display control method in this example embodiment, on the one hand in the relatively low situation of the gray scale of display image
Under, the backlight illumination of backlight is reduced, can so improve the light leakage phenomena under low-light level background, while improve image data value
To improve the light transmittance of liquid crystal, it is consistent the output brightness before and after adjustment；On the other hand, display is defeated before and after keeping adjusting
Go out brightness it is basically identical on the premise of, due to improving light leakage phenomena, and then improve the picture contrast under low-light level background；
Another further aspect, due to reducing the luminosity of backlight, the power output of backlight can be reduced, and then display can be reduced
The overall power of part.
Below, the display control method in this example embodiment will be further detailed.
In this exemplary embodiment, the predeterminable area of the frame to be shown can include a frame complete picture of frame to be shown
Zone Full；Or a frame complete picture of frame to be shown can be divided into more sub-regions according to preset rules, then institute
It can be each in multiple subregions to state predeterminable area.Display control method in this example embodiment, can be according to picture
Face shows that light and shade etc. is adjusted to whole frame picture, can also subregion be adjusted.
For example, in some scene of game, it is shown as gun sight capture in picture and focuses on screen center region
In game picture, then in addition to the higher brightness of screen center's region needs that gun sight capture focuses on is shown, neighboring area is equal
Shown for relatively low brightness；Picture shows that scene can also be in the TV monitor system of multiple video cameras composition, several
Picture compression is in different shooting environmentals on the screen of a monitor, but due to different cameras, shown picture
The brightness in face is also not quite similar, such as video camera one, video camera three, video camera five are in underground garage, warehouse, corridor etc. respectively
In the environment of dark, then the brightness of its corresponding display picture is relatively low.In the above-mentioned multiple display scenes enumerated, it is aobvious
The frame complete picture shown includes the visibly different subregion of multiple light and shades, then the display control that the disclosure can be applied to provide
Method, more sub-regions of frame to be shown are controlled.
In display technology field, according to three primary color theory, most of colors can by R (Red, red), G (Green,
It is green), B (Blue, blue) three colors it is synthetically produced according to different ratios.In this exemplary embodiment, the view data of the pixel
Can be RGB (RGB) data of three sub-pixels of pixel, i.e., the corresponding rank brightness of three kinds colors, wherein red,
Green, blue three Color Channel each colors are respectively divided into 255 rank brightness.
In step sl, can be three sons of each pixel to the view data of each pixel in the predeterminable area of frame to be shown
RGB (RGB) data of pixel utilize the brightness value of each pixel of luminance equation calculating according to three primary colours composition principle.
Further, the brightness value of each pixel in the predeterminable area of the frame to be shown calculated can be counted with true
First luminance threshold of the fixed predeterminable area, wherein statistical method can use the method statistic of statistic histogram to go out preset areas
First luminance threshold in domain.In other example embodiments, method that used statistical method is not limited to statistic histogram,
The disclosure does not do particular determination herein.You need to add is that because the predeterminable area of frame to be shown can also be more sub-regions
In each, then can determine one first luminance threshold for each predeterminable area, then in a frame picture, it may be determined that go out
Multiple first luminance thresholds.
One or more first luminance thresholds are corrected to obtain corresponding one or more second luminance thresholds, simultaneously
α values and β value can be obtained by correcting, you can obtain the view data for the pixel for correcting one or more of predeterminable areas
First multiple and the second multiple.Wherein, the first multiple namely the output luminance equation that multiple is α values, the second multiple namely multiple
For the output luminance equation of β value.
In step s 2, compare in the predeterminable area of the frame to be shown calculated the brightness value of each pixel with by correcting
The size of the second luminance threshold arrived, that is, judge whether the brightness value of each pixel of predeterminable area is less than the second luminance threshold.It is right
It is noted that one-to-one principle when the frame to be shown including multiple predeterminable areas compares, the pixel of corresponding predeterminable area
Brightness value is needed compared with the second luminance threshold of same predeterminable area.
In step s3, can foundation when judging that the brightness value of pixel of predeterminable area is not less than the second luminance threshold
First multiple is view data of the multiple for the correction of output luminance equation of the α values pixel.
In step s3, can be according to when judging that the brightness value of pixel of predeterminable area is less than the second luminance threshold
Diploidy number is view data of the multiple for the correction of output luminance equation of the β value pixel, wherein, α values are less than β value, Ye Ji
Diploidy number is more than the first multiple.
In addition, the setting that response of step S3 needs, can be provided previously by a multiplier, the multiplication in step sl
Device can extract α values and β value while α values are obtained with β value by correcting, and then generate the output brightness side that multiple is α values
The output luminance equation (the second multiple) of journey (the first multiple) and β value.The view data of the pixel of predeterminable area can lead to
Cross multiplier and carry out the described image data after computing generation correction.
Further, the display control method that this example embodiment provides, can be according to the described image data after correction
Data voltage is provided.
In step s 4, the luminance-reduction coefficient of backlight can be according to the first luminance threshold and the second luminance threshold simultaneously
Determine that so-called Gamma correction is exactly to enter edlin to the gamma curve of image with reference to gamma correction curve, it is non-to be carried out to image
Linear tone editor, dark parts and light-colored part in picture signal are detected, and increase both ratios, so as to improve image
Contrast effect.
Further PWM (Pulse Width Modulation pulse width modulations) can be exported according to luminance-reduction coefficient
Signal is to LED drive chip to reduce the luminosity of backlight.You need to add is that the predeterminable area due to frame to be shown
Can be each in multiple subregions, then the backlight described in this example embodiment corresponds to its corresponding preset areas
Domain.
Specifically, the backlight in this example embodiment according to distribution of light sources position difference can be direct-light-type backlight or
Side-edge type backlight, and the backlight can include LED light source.Can also be EL (Electro in other examples
Luminesence electroluminescent) or the light such as CCFL (Cold Cathode Fluorescent Lamp cathode fluorescent tubes)
Source, the disclosure do not do particular determination herein.
Further, this example embodiment additionally provides the display control unit corresponding to above-mentioned display control method
10.Shown in reference picture 3, the display control unit 10 can include：
Luminance threshold determining unit 11, the view data of each pixel in the predeterminable area of frame to be shown is counted, really
Determine the first luminance threshold of predeterminable area, and correct the first luminance threshold and obtain the second luminance threshold；
Pixel intensity judging unit 22, judges whether the brightness value of each pixel of predeterminable area is less than the second luminance threshold；
First data correction unit 31, when judging that the brightness value of pixel of predeterminable area is not less than the second luminance threshold,
The view data of the pixel is corrected according to the first multiple；
Second data correction unit 32, when judging that the brightness value of pixel of predeterminable area is less than the second luminance threshold, according to
The view data of the pixel is corrected according to the second multiple more than the first multiple；
Back light source brightness control unit 44, the brightness of backlight is determined according to the first luminance threshold and the second luminance threshold
Coefficient is reduced, and the luminosity of backlight is reduced according to luminance-reduction coefficient.
The detail of each unit is carried out in corresponding display control method in above-mentioned display control unit 10
It is described in detail, therefore here is omitted.
This example embodiment additionally provides a kind of display device, including liquid crystal display panel and backlight, described aobvious
Showing device can also include the display control unit 10 as described in above-mentioned any one.
In addition, although describing each step of method in the disclosure with particular order in the accompanying drawings, still, this does not really want
These steps must be performed according to the particular order by asking or implying, or the step having to carry out shown in whole could be realized
Desired result.It is additional or alternative, it is convenient to omit some steps, multiple steps are merged into a step and performed, and/
Or a step is decomposed into execution of multiple steps etc..
It should be noted that although some modules or list of the equipment for action executing are referred in above-detailed
Member, but this division is not enforceable.In fact, according to embodiment of the present disclosure, it is above-described two or more
Either the feature of unit and function can embody module in a module or unit.A conversely, above-described mould
Either the feature of unit and function can be further divided into being embodied by multiple modules or unit block.
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can be realized by software, can also be realized by way of software combines necessary hardware.Therefore, according to the disclosure
The technical scheme of embodiment can be embodied in the form of software product, the software product can be stored in one it is non-volatile
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are to cause a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is performed according to disclosure embodiment
Method.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by appended
Claim is pointed out.
Claims (10)
- A kind of 1. display control method, applied to the display device for including liquid crystal display panel and backlight；Characterized in that, The display control method includes：The view data of each pixel in the predeterminable area of frame to be shown is counted, determines the first brightness of the predeterminable area Threshold value, and correct first luminance threshold and obtain the second luminance threshold；Judge whether the brightness value of each pixel of the predeterminable area is less than second luminance threshold；When judging that the brightness value of the pixel of the predeterminable area is not less than second luminance threshold, according to the first multiple Correct the view data of the pixel；When judging that the brightness value of the pixel of the predeterminable area is less than second luminance threshold, according to being more than described the Second multiple of one multiple corrects the view data of the pixel；The luminance-reduction coefficient of the backlight is determined according to first luminance threshold and the second luminance threshold, and according to institute Stating luminance-reduction coefficient reduces the luminosity of the backlight.
- 2. display control method according to claim 1, it is characterised in that the first of the determination predeterminable area is bright Degree threshold value includes：To the view data of each pixel in the predeterminable area of frame to be shown according to three primary colours composition principle, determined using luminance equation The brightness value of each pixel；The brightness value of each pixel in the predeterminable area of frame to be shown is counted to determine the first brightness of the predeterminable area Threshold value.
- 3. display control method according to claim 2, it is characterised in that the display control method also includes：The first of the view data of the correction pixel is determined according to first luminance threshold and the second luminance threshold Multiple and the second multiple.
- 4. display control method according to claim 3, it is characterised in that the display control method also includes：Data voltage is provided according to the described image data after correction.
- 5. display control method according to claim 4, it is characterised in that the luminance-reduction for determining the backlight Coefficient includes：According to first luminance threshold and the second luminance threshold and determine the bright of the backlight with reference to gamma correction curve Degree reduces coefficient.
- 6. display control method according to claim 5, it is characterised in that the view data for correcting the pixel Including：The view data of the pixel of the predeterminable area is transported with first multiple or the second multiple by multiplier Calculate the described image data after generation correction.
- 7. display control method according to claim 6, it is characterised in that the predeterminable area includes the frame to be shown Zone Full.
- 8. display control method according to claim 6, it is characterised in that the frame to be shown includes more sub-regions, The predeterminable area is each in the multiple subregion.
- A kind of 9. display control unit, applied to the display device for including liquid crystal display panel and backlight；Characterized in that, The display control unit includes：Luminance threshold determining unit, the view data of each pixel in the predeterminable area of frame to be shown is counted, it is determined that described First luminance threshold of predeterminable area, and correct first luminance threshold and obtain the second luminance threshold；Pixel intensity judging unit, judges whether the brightness value of each pixel of the predeterminable area is less than second luminance threshold Value；First data correction unit, it is not less than second luminance threshold in the brightness value for judging the pixel of the predeterminable area During value, the view data of the pixel is corrected according to the first multiple；Second data correction unit, it is less than second luminance threshold in the brightness value for judging the pixel of the predeterminable area When, foundation corrects the view data of the pixel more than the second multiple of first multiple；Back light source brightness control unit, the bright of the backlight is determined according to first luminance threshold and the second luminance threshold Degree reduces coefficient, and the luminosity of the backlight is reduced according to the luminance-reduction coefficient.
- 10. a kind of display device, including liquid crystal display panel and backlight；Characterized in that, the display device also includes Display control unit as claimed in claim 9.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107845369A (en) * | 2017-11-17 | 2018-03-27 | 苏州华兴源创电子科技有限公司 | A kind of dynamic adjusting method and system of LED backlight brightness |
| CN108389553A (en) * | 2018-03-27 | 2018-08-10 | 深圳创维－Rgb电子有限公司 | Method for controlling backlight thereof, device and computer readable storage medium |
| CN108492769A (en) * | 2018-03-26 | 2018-09-04 | 京东方科技集团股份有限公司 | brightness adjusting method and device, display device |
| WO2019148667A1 (en) * | 2018-01-30 | 2019-08-08 | 武汉华星光电技术有限公司 | Method and device employing backlight partitioning to display image having high dynamic contrast ratio |
| CN110246466A (en) * | 2019-07-12 | 2019-09-17 | 业成科技（成都）有限公司 | The light source control method and liquid crystal display device of display device |
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