CN107342054B - 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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- CN107342054B CN107342054B CN201710574816.9A CN201710574816A CN107342054B CN 107342054 B CN107342054 B CN 107342054B CN 201710574816 A CN201710574816 A CN 201710574816A CN 107342054 B CN107342054 B CN 107342054B
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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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- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The disclosure is directed to a kind of display device, display control method and display control units, are related to field of display technology.The display control method includes that the image data of each pixel in the predeterminable area to frame to be shown counts, and determines the first luminance threshold of predeterminable area, and corrects the first luminance threshold and obtain the second luminance threshold；Judge the brightness value of each pixel of predeterminable area whether less than the second luminance threshold；When the brightness value for the pixel for judging predeterminable area is not less than the second luminance threshold, the image data of the pixel is corrected according to the first multiple；When the brightness value for the pixel for judging predeterminable area is less than the second luminance threshold, the image data of the pixel is corrected according to the second multiple for being greater than the first multiple；It determines that the brightness of backlight reduces coefficient according to the first luminance threshold and the second luminance threshold, and reduces the light emission luminance of backlight accordingly.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 which field of display technology, in particular to a kind of display control method, display control unit and shows
Showing device.
Background technique
Currently, 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 that global dynamic light adjustment and regional dynamics dim two types, global dynamic light adjustment principle
To regard whole display picture as an entirety control global brightness, the structure of the light-dimming method is relatively easy, behaviour
The phenomenon that making to get up also uncomplicated, but still will appear image display distortion when carrying out dynamic light adjustment, while this light modulation side
Method is difficult to realize to the balance between the brightness upper zone and darker area of all videos picture, for the liquid of larger size
The display effect of crystal display screen, global dynamic light adjustment is relatively poor.
Regional dynamics light modulation principle is that whole display picture is divided into multiple regions to adjust to backlight subregion
Section is analyzed using brightness statistics after receiving display picture and combination controlling method moves the backlight illumination of each section
State adjusting is displayed contrast with improving, but this light-dimming method still has optical crosstalk and shows the brightness of image
Not accurate phenomenon, needing comparatively huge backlight source driving circuit is also the maximum disadvantage of regional dynamics light modulation.
Therefore, it is necessary to study a kind of display control method and devices, and then improve display quality.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of display control method, display control unit and display device, and then at least
One or more is overcome the problems, such as caused by the limitation and defect due to the relevant technologies to a certain extent.
According to one aspect of the disclosure, provide a kind of display control method, be applied to include liquid crystal display panel with
And the display device of backlight；The display control method includes:
The image 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 the brightness value for the pixel for judging the predeterminable area is not less than second luminance threshold, according to first
Multiple corrects the image data of the pixel；
When the brightness value for the pixel for judging the predeterminable area is less than second luminance threshold, according to greater than institute
The second multiple for stating the first multiple corrects the image data of the pixel；
Determine that the brightness of the backlight reduces coefficient, and root according to first luminance threshold and the second luminance threshold
Reducing coefficient according to the brightness reduces the light emission luminance of the backlight.
In a kind of exemplary embodiment of the disclosure, the first luminance threshold of the determination predeterminable area includes:
To the image 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 is counted with the first of the determination predeterminable area in predeterminable area frame to be shown
Luminance threshold.
In a kind of exemplary embodiment of the disclosure, the display control method further include:
The image 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 further include:
Data voltage is provided according to the described image data after correction.
In a kind of exemplary embodiment of the disclosure, the brightness of the determination backlight reduces coefficient and includes:
According to first luminance threshold and the second luminance threshold and the backlight is determined in conjunction with gamma correction curve
Brightness reduce coefficient.
In a kind of exemplary embodiment of the disclosure, the image data for correcting the pixel includes:
The image data of the pixel of the predeterminable area and first multiple or the second multiple by multiplier into
Row operation generates the described image data after correction.
In a kind of exemplary embodiment of the disclosure, the predeterminable area includes the whole region of the frame to be shown.
In a kind of exemplary embodiment of the disclosure, the frame to be shown includes multiple subregions, the predeterminable area
For each of the multiple subregion.
According to another aspect of the disclosure, a kind of display control unit is provided, be applied to include liquid crystal display panel with
And the display device of backlight, the display control unit include:
Luminance threshold determination unit counts the image data of each pixel in the predeterminable area of frame to be shown, determines
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 the pixel for judging the predeterminable area
When spending threshold value, the image data of the pixel is corrected according to the first multiple；
Second data correction unit is less than second brightness in the brightness value for the pixel for judging the predeterminable area
When threshold value, the image data of the pixel is corrected according to the second multiple for being greater than first multiple；
Back light source brightness control unit determines the backlight according to first luminance threshold and the second luminance threshold
Brightness reduce coefficient, and coefficient reduced according to the brightness reduce the light emission luminance of the backlight.
According to another aspect of the disclosure, a kind of display device, including liquid crystal display panel and backlight, institute are provided
Stating display device further includes the display control unit as described in above-mentioned any one.
As shown from the above technical solution, it the advantages of the display control method of the disclosure and has the active effect that
A kind of display control method that the disclosure provides, applied to the display dress for including liquid crystal display panel and backlight
It sets, comprising:
It is 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 determines backlight according to the first luminance threshold and the second luminance threshold to determine the second luminance threshold
Brightness reduces coefficient to reduce the light emission luminance of backlight and correction raw image data and determine the image data after correction simultaneously
The brightness of liquid crystal display is improved accordingly.
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
Brightness can improve the light leakage phenomena under low-light level background in this way, while improve image data value to improve the light transmittance of liquid crystal,
It is consistent the output brightness of adjustment front and back；On the other hand, before showing that output brightness is almost the same before and after keeping adjustment
It puts, due to improving light leakage phenomena, and then improves the picture contrast under low-light level background；In another aspect, due to reducing
The light emission luminance of backlight can reduce the output power of backlight, and then can reduce the overall power of display device.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached 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.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.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, thesing 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 any suitable manner in one or more embodiments.
In addition, attached drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical attached drawing mark in figure
Note indicates same or similar part, thus will omit repetition thereof.Some block diagrams shown in the drawings are function
Energy entity, not necessarily must be corresponding with physically or logically independent entity.These function 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 the related technology, due to the brightness of traditional LCD backlight be it is constant, along with spies such as the structure and materials of liquid crystal
Point, liquid crystal display will lead to light leakage phenomena when showing to darker picture.The phenomenon wastes the energy, while going back shadow
The contrast of liquid crystal display displays images is rung.
To solve above-mentioned display defect in the related technology, the thinking that the disclosure provides is when the gray scale of display image is opposite
When lower, the brightness of backlight can suitably be reduced, be correspondinglyd increase at the same time by the light transmittance of LCD is proportional,
Under the premise of keeping brightness of image almost the same, light leakage phenomena is improved.
A kind of display control method is provided 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；May include:
Step S1 counts the image data of each pixel in the predeterminable area of frame to be shown, 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 the brightness value for the pixel for judging the predeterminable area is not less than second luminance threshold,
The image data of the pixel is corrected according to the first multiple；
When the brightness value for the pixel for judging the predeterminable area is less than second luminance threshold, according to greater than institute
The second multiple for stating the first multiple corrects the image data of the pixel；
Step S4 determines that the brightness of the backlight reduces system according to first luminance threshold and the second luminance threshold
It counts, and reduce coefficient according to the brightness to reduce the light emission luminance of the backlight.
According to the display control method in this example embodiment, on the one hand the relatively low situation of the gray scale of image is being shown
Under, the backlight illumination of backlight is reduced, the light leakage phenomena under low-light level background can be improved in this way, while improving image data value
To improve the light transmittance of liquid crystal, it is consistent the output brightness of adjustment front and back；On the other hand, it is shown before and after keeping adjustment defeated
Under the premise of brightness is almost the same out, due to improving light leakage phenomena, and then the picture contrast under low-light level background is improved；
In another aspect, due to the light emission luminance for reducing backlight the output power of backlight can be reduced, and then can reduce display
The overall power of part.
In the following, by the display control method in this example embodiment is further detailed.
In this exemplary embodiment, the predeterminable area of the frame to be shown may include a frame complete picture of frame to be shown
Whole region；Or a frame complete picture of frame to be shown can be divided into multiple subregions according to preset rules, then institute
Stating predeterminable area can be each of multiple subregions.Display control method in this example embodiment, can be according to picture
Face shows that light and shade etc. is adjusted whole frame picture, can also be adjusted with subregion.
For example, in some scene of game, gun sight capture is shown as in picture and focuses on screen center region
In game picture, then other than the screen center region that gun sight capture focuses needs higher brightness to show, neighboring area is equal
It is shown for lower brightness；Picture shows that scene can also be in the TV monitor system that multiple video cameras form, 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, show
It include the visibly different subregion of multiple light and shades in the frame complete picture shown, then the display control that can be provided using the disclosure
Method controls multiple subregions of frame to be shown.
In field of display technology, according to three primary color theory, most of colors can by R (Red, red), G (Green,
It is green), B (Blue, blue) three colors are synthetically produced according to different ratios.In this exemplary embodiment, the image data of the pixel
Can for a pixel three sub-pixels RGB (RGB) data, i.e., the corresponding rank brightness of three kinds colors, wherein it is red,
Green, blue three Color Channel each colors are respectively divided into 255 rank brightness.
In step sl, can in the predeterminable area to frame to be shown each pixel three sons of image data, that is, each pixel
RGB (RGB) data of pixel calculate the brightness value of each pixel using luminance equation according to three primary colours composition principle.
Further, it the brightness value of each pixel can be counted with true in the predeterminable area to calculated frame to be shown
First luminance threshold of the fixed predeterminable area, wherein statistical method can go out preset areas using the method statistic of statistic histogram
First luminance threshold in domain.In other example embodiments, the 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 since the predeterminable area of frame to be shown may be multiple subregions
Each of, then one first luminance threshold can be determined for each predeterminable area, then in a frame picture, can determine
Multiple first luminance thresholds.
The first luminance threshold of one or more is corrected to obtain corresponding one or more second luminance thresholds, simultaneously
α value and β value can be obtained by correction, can be obtained the image data for the pixel for correcting one or more of predeterminable areas
First multiple and the second multiple.Wherein, the first multiple namely multiple are the output luminance equation of α value, the second multiple namely multiple
For the output luminance equation of β value.
In step s 2, in the predeterminable area of more calculated frame to be shown the brightness value of each pixel with by correcting
Whether the size of the second luminance threshold arrived judges the brightness value of each pixel of predeterminable area less than the second luminance threshold.It is right
It is noted that one-to-one principle when the frame to be shown for including multiple predeterminable areas compares, the pixel of corresponding predeterminable area
Brightness value needs are compared with the second luminance threshold of same predeterminable area.
It in step s3, can foundation when the brightness value for the pixel for judging predeterminable area is not less than the second luminance threshold
First multiple, that is, multiple is the image data of the correction of output luminance equation of the α value pixel.
It in step s3, can be according to when the brightness value for the pixel for judging predeterminable area is less than the second luminance threshold
Diploidy number, that is, multiple is the image data of the correction of output luminance equation of the β value pixel, wherein α value is less than β value, Ye Ji
Diploidy number is greater than the first multiple.
In addition, the setting that response of step S3 needs, can be provided previously a multiplier, the multiplication in step sl
Device can extract α value and β value while obtaining α value and β value by correction, and then generate the output brightness side that multiple is α value
The output luminance equation (the second multiple) of journey (the first multiple) and β value.The image data of the pixel of predeterminable area can lead to
It crosses multiplier and carries out the described image data after operation 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 brightness of backlight reduce coefficient can be according to the first luminance threshold and the second luminance threshold simultaneously
Determine that so-called Gamma correction is exactly to edit to the gamma curve of image in conjunction with gamma correction curve, it is non-to be carried out to image
Linear tone editor detects dark parts and light-colored part in picture signal, and increases the two ratio, to improve image
Contrast effect.
Coefficient output PWM (modulation of Pulse Width Modulation pulse width) may further be reduced according to brightness
Signal reduces the light emission luminance of backlight to LED drive chip.You need to add is that due to the predeterminable area of frame to be shown
It can be each of multiple subregions, then backlight described in this example embodiment corresponds to its corresponding preset areas
Domain.
Specifically, backlight in this example embodiment according to distribution of light sources position difference can for direct-light-type backlight or
Side-edge type backlight, and the backlight may include LED light source.In other examples or EL (Electro
Luminesence electroluminescent) or the light such as CCFL (Cold Cathode Fluorescent Lamp cathode fluorescent tube)
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.Referring to shown in Fig. 3, which may include:
Luminance threshold determination unit 11 counts the image data of each pixel in the predeterminable area of frame to be shown, really
Determine the first luminance threshold of predeterminable area, and corrects the first luminance threshold and obtain the second luminance threshold；
Whether pixel intensity judging unit 22 judges the brightness value of each pixel of predeterminable area less than the second luminance threshold；
First data correction unit 31, when the brightness value for the pixel for judging predeterminable area is not less than the second luminance threshold,
The image data of the pixel is corrected according to the first multiple；
Second data correction unit 32, when the brightness value for the pixel for judging predeterminable area is less than the second luminance threshold, according to
The image data of the pixel is corrected according to the second multiple for being greater than the first multiple；
Back light source brightness control unit 44 determines the brightness of backlight according to the first luminance threshold and the second luminance threshold
Coefficient is reduced, and reduce coefficient according to brightness to reduce the light emission luminance of backlight.
The detail of each unit carries out in corresponding display control method in above-mentioned display control unit 10
Detailed description, therefore details are not described herein again.
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 in the accompanying drawings with particular order, this does not really want
These steps must be executed in this particular order by asking or implying, or having to carry out step shown in whole could realize
Desired result.Additional or alternative, it is convenient to omit multiple steps are merged into a step and executed by certain steps, and/
Or a step is decomposed into execution of multiple steps etc..
It should be noted that although being referred to several modules or list for acting the equipment executed in the above detailed description
Member, but this division is not enforceable.In fact, according to embodiment of the present disclosure, it is above-described two or more
Module or the feature and function of unit can embody in a module or unit.Conversely, an above-described mould
The feature and function of block or unit can be to be embodied by multiple modules or unit with further division.
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 also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is executed according to disclosure embodiment
Method.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (9)
1. a kind of display control method, applied to the display device for including liquid crystal display panel and backlight；It is characterized in that,
The display control method includes:
The image 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 the brightness value for the pixel for judging the predeterminable area is not less than second luminance threshold, according to the first multiple
Correct the image data of the pixel；
When the brightness value for the pixel for judging the predeterminable area is less than second luminance threshold, according to being greater than described the
Second multiple of one multiple corrects the image data of the pixel；
According to first luminance threshold and the second luminance threshold and the bright of the backlight is determined in conjunction with gamma correction curve
Degree reduces coefficient, and the light emission luminance of the backlight is reduced according to brightness reduction coefficient.
2. display control method according to claim 1, which is characterized in that the first of the determination predeterminable area is bright
Spending threshold value includes:
To the image data of each pixel in the predeterminable area of frame to be shown according to three primary colours composition principle, luminance equation is utilized to determine
The brightness value of each pixel；
The brightness value of each pixel is counted with the first brightness of the determination predeterminable area in predeterminable area frame to be shown
Threshold value.
3. display control method according to claim 2, which is characterized in that the display control method further include:
The first of the image 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, which is characterized in that the display control method further include:
Data voltage is provided according to the described image data after correction.
5. display control method according to claim 4, which is characterized in that the image data packet of the correction pixel
It includes:
The image 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 generating correction.
6. display control method according to claim 5, which is characterized in that the predeterminable area includes the frame to be shown
Whole region.
7. display control method according to claim 5, which is characterized in that the frame to be shown includes multiple subregions,
The predeterminable area is each of the multiple subregion.
8. a kind of display control unit, applied to the display device for including liquid crystal display panel and backlight；It is characterized in that,
The display control unit includes:
Luminance threshold determination unit counts the image data of each pixel in the predeterminable area of frame to be shown, described in determination
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 is not less than second luminance threshold in the brightness value for the pixel for judging the predeterminable area
When value, the image data of the pixel is corrected according to the first multiple；
Second data correction unit is less than second luminance threshold in the brightness value for the pixel for judging the predeterminable area
When, the image data of the pixel is corrected according to the second multiple for being greater than first multiple；
Back light source brightness control unit determines the bright of the backlight according to first luminance threshold and the second luminance threshold
Degree reduces coefficient, and the light emission luminance of the backlight is reduced according to brightness reduction coefficient.
9. a kind of display device, including liquid crystal display panel and backlight；It is characterized in that, the display device further include as
Display control unit according to any one of claims 8.
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| CN107845369B (en) * | 2017-11-17 | 2019-07-16 | 苏州华兴源创科技股份有限公司 | A kind of dynamic adjusting method and system of LED backlight brightness |
| CN108564923B (en) * | 2018-01-30 | 2020-04-10 | 武汉华星光电技术有限公司 | High dynamic contrast image display method and device based on partition backlight |
| CN108492769B (en) * | 2018-03-26 | 2020-08-14 | 京东方科技集团股份有限公司 | Brightness adjusting method and device and display device |
| CN108389553B (en) * | 2018-03-27 | 2021-01-12 | 深圳创维－Rgb电子有限公司 | Backlight control method, apparatus and computer readable storage medium |
| CN111030200B (en) * | 2018-10-10 | 2021-10-19 | 纬联电子科技(中山)有限公司 | Electronic device and power adjusting method thereof |
| CN110246466B (en) * | 2019-07-12 | 2021-01-29 | 业成科技（成都）有限公司 | Light source control method of display device and liquid crystal display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355561A (en) * | 2011-09-20 | 2012-02-15 | 青岛海信电器股份有限公司 | Method and device for improving image contrast, LCD TV (liquid crystal display television) set |
| CN102498508A (en) * | 2009-09-07 | 2012-06-13 | 夏普株式会社 | Image display device and image display method |
| CN103325355A (en) * | 2013-06-18 | 2013-09-25 | 华南理工大学 | Method for dynamically adjusting backlight brightness based on image content |
| CN103413539A (en) * | 2013-09-04 | 2013-11-27 | 青岛海信电器股份有限公司 | Control method, control device and display device of backlight drive |
| CN104050944A (en) * | 2014-06-13 | 2014-09-17 | 京东方科技集团股份有限公司 | Liquid crystal display control method and system and display device |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
-
2017
- 2017-07-14 CN CN201710574816.9A patent/CN107342054B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102498508A (en) * | 2009-09-07 | 2012-06-13 | 夏普株式会社 | Image display device and image display method |
| CN102355561A (en) * | 2011-09-20 | 2012-02-15 | 青岛海信电器股份有限公司 | Method and device for improving image contrast, LCD TV (liquid crystal display television) set |
| CN103325355A (en) * | 2013-06-18 | 2013-09-25 | 华南理工大学 | Method for dynamically adjusting backlight brightness based on image content |
| CN103413539A (en) * | 2013-09-04 | 2013-11-27 | 青岛海信电器股份有限公司 | Control method, control device and display device of backlight drive |
| CN104050944A (en) * | 2014-06-13 | 2014-09-17 | 京东方科技集团股份有限公司 | Liquid crystal display control method and system and display device |
| CN105513546A (en) * | 2016-03-02 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight adjustment method and device and display device |
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