CN106448608A - Screen brightness adjusting method, device and television in allusion to mura problem - Google Patents
Screen brightness adjusting method, device and television in allusion to mura problem Download PDFInfo
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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
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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
- G09G2320/00—Control of display operating conditions
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a screen brightness adjusting method, device and television in allusion to a mura problem. The method comprises the following steps: determining initial brightness data of an intensity control area of a reference row or column, according to the preset fitting function relation, initial brightness data of the intensity control area of the reference row or column and bit order of each intensity control area in the reference row or column, determining ideal brightness data corresponding to each intensity control area in the reference row or column, taking the difference of the brightness data and ideal brightness data of the same intensity control area, and obtaining compensation brightness data; and using the compensation brightness data to determine the intensity control value of each intensity control area in the current reference row or column, performing the intensity control to the intensity control area according to the intensity control value, so that the brightness data of the whole screen is close to the ideal brightness data, the display defects caused by the backlight reduction and mixing light distance shortening are improved, the whole screen is displayed according to the ideal brightness distribution, and the homogenization distribution of the brightness is realized.
Description
The application is on March 11st, 2015 for the applying date, Application No. 201510106382.0, a kind of invention entitled screen
The divisional application of curtain luminance regulating method, device and liquid crystal indicator.
Technical field
The present invention relates to display technology field, more particularly, to a kind of screen brightness regulation method for mura problem, dress
Put and television set.
Background technology
With the fast development of Display Technique industry, liquid crystal display（Liquid Crystal Display, LCD）?
Become the product of main flow in recent years.Under the ordering about with industry competition pressure for the user's request, the deisgn approach of LCD is in lighter
The features such as thin, small power consumption.
Because LCD is not the display of active light-emitting type, dependence backlight is needed to provide emergent light just to enable to show.
And backlight is typically integrated in backlight module, especially down straight aphototropism mode set, as shown in figure 1, existing direct-type backlight
Module mainly includes：Multiple backlights 101, diffuser plate 102, diffusion sheet 103, blooming piece 104 etc..If according to frivolous, power consumption
The requirement such as little is designed, and more feasible mode realizes LCD by way of reducing light mixing distance in backlight module
Thinning, in addition, to reduce the power consumption of LCD by way of reducing backlight quantity.
But, backlight quantity minimizing so that the distance of adjacent backlight is larger, two backlight middle position
Brightness, substantially secretly in the brightness of two backlight positions, reduces light mixing distance it is impossible to ensure light that backlight sends relatively
Good is mixed to get uniform backlight, thus, lead to backlight module to send the uneven backlight of light and shade, form Mura phenomenon, impact
The display effect of LCD.
Content of the invention
The embodiment of the present invention provides a kind of screen brightness regulation method, device and liquid crystal indicator, existing in order to solve
Reduce backlight quantity and reduce light mixing distance to realize the frivolous of display device present in technology, and then result in the back of the body
The uneven problem waiting display defect of brightness.
The embodiment of the present invention employs the following technical solutions：
A kind of screen brightness regulation method, is applied in liquid crystal indicator, methods described includes：
Determine each brightness adjustment region in the reference picture that current screen shows, wherein, described brightness adjustment region be according to
The row and column of predetermined number carries out to reference picture dividing and obtains, and described reference picture is the homogeneous image of gray scale；
Execute following operation for every a line brightness adjustment region or every string brightness adjustment region respectively：
Obtain the original intensity data in the brightness adjustment region with reference to row or column；
According to default fitting function relation, the original intensity data in the described brightness adjustment region with reference to row or column and each
Position sequence in reference to row or column for the brightness adjustment region, determines bright with reference to the corresponding ideal in each brightness adjustment region in row or column
Degrees of data；
Will be poor with described desired level data for the described original intensity data in same brightness adjustment region, it is compensated brightness number
According to；
Each brightness adjustment region in current reference row or column is determined according to each compensation brightness data in current reference row or column
Brightness adjustment value；
According to each brightness adjustment value determining, brightness adjustment is carried out to each the brightness adjustment region in current row or column.
A kind of screen intensity adjusting apparatus, are applied in liquid crystal indicator, described device includes：
First processing units, for determining each brightness adjustment region in the reference picture that current screen shows, wherein, described bright
Degree adjustment region is according to the row and column of predetermined number, reference picture to be carried out dividing obtaining, and described reference picture is that gray scale is equal
One image；
Second processing unit, for obtaining the original intensity data in the brightness adjustment region with reference to row or column；
3rd processing unit, for according to default fitting function relation, the described brightness adjustment region with reference to row or column just
Beginning brightness data and each the brightness adjustment region position sequence in reference to row or column, determines and adjusts with reference to each brightness in row or column
Main plot domain corresponding desired level data；
Difference unit, for the described brightness data in same brightness adjustment region is poor with described desired level data, obtains
Compensation brightness data；
Fourth processing unit, for determining in current reference row or column according to each compensation brightness data in current reference row or column
The brightness adjustment value in each brightness adjustment region；
Adjustment unit, for according to each brightness adjustment value determining, entering to each the brightness adjustment region in current row or column
Row brightness adjustment.
A kind of liquid crystal indicator, including described screen intensity adjusting apparatus.
By above-mentioned Adjusted Option, for each with reference to row or column, according to default fitting function relation and acquisition
Original intensity data, matching obtains preferable brightness data function, and according to intrinsic brilliance data function and desired level data
Function is poor, is compensated brightness data function, and then determines brightness adjustment value using this compensation brightness data function, wherein,
This brightness adjustment value can be compensation brightness data that compensation brightness data function determines or more the repairing of coarseness
Compensation brightness data after just.Finally, according to the brightness adjustment value determining, corresponding brightness adjustment region is carried out with the tune of brightness
Whole, specifically, can be that the brightness adjustment value first passing through line direction determination is adjusted to this brightness adjustment region, then by row
The brightness adjustment value that direction determines is adjusted to this brightness adjustment region.Really pass through to adjust driving voltage, change liquid crystal
Transmitance, and then realize the adjustment of screen intensity.By this Adjusted Option so that the brightness data of whole screen is all close to preferable
Brightness data, is improved the uneven display of the backlight illumination being led to due to backlight minimizing and light mixing distance shortening and lacks
Fall into so that whole screen is shown the homogenization distribution it is achieved that brightness according to preferable Luminance Distribution.Meanwhile, determining
During brightness adjustment value, may be selected to be determined according to revised compensation brightness data, thus, it is to avoid driving voltage is too high or too low
Adjustment so that driving voltage adjustment amplitude more uniform, improve processing speed and the disposal ability of adjusting apparatus；And
And, this amplitude more uniformly adjusts operation it is ensured that whole screen can realize brightness adjustment, faster thus shortening sound
Between seasonable.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below
Accompanying drawing briefly introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the method and step schematic diagram in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of steps of screen brightness regulation method provided in an embodiment of the present invention；
Fig. 3 is that a kind of row, column provided in an embodiment of the present invention divides schematic diagram；
Fig. 4（a）Ideal effect schematic diagram for brightness data distribution；
Fig. 4（b）Actual effect schematic diagram for brightness data distribution；
Fig. 5 is the intrinsic brilliance data function and desired level data function distribution in preset coordinate system in the embodiment of the present invention
Schematic diagram；
Fig. 6 is the curve distribution schematic diagram of compensation brightness data function；
Fig. 7 is a kind of structural representation of screen intensity adjusting apparatus provided in an embodiment of the present invention.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step ground describes in detail it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of not making creative work
All other embodiment, broadly falls into the scope of protection of the invention.
Here is it should be noted that because the program is directed to liquid crystal indicator, the brightness of its screen is by two
Aspect determines, on the one hand, is the backlight illumination that the backlight module of display device sends, is on the other hand the light transmittance of liquid crystal.
In the present invention, because the quantity of backlight is fixing, its position is also fixing, therefore, can not be by changing backlight
The mode of brightness adjusts the brightness of screen；And the light transmittance for liquid crystal, can be by adjusting voltage to change, therefore,
The present invention proposes a kind of screen intensity Adjusted Option, by the row and column according to predetermined number by the screen of currently displaying image
It is divided into multiple brightness adjustment regions, then, according to iteration theorem, for all brightness adjustment areas of a line every in current screen
All brightness adjustment regions of domain and every string execute following operation respectively：Determination is first with reference to the brightness adjustment region of row or column
Beginning brightness data, according to default fitting function relation, the original intensity data in each brightness adjustment region and each brightness
Position sequence in reference to row or column for the adjustment region, determines with reference to each brightness adjustment region corresponding desired level number in row or column
According to, the described brightness data in same brightness adjustment region is poor with described desired level data, it is compensated brightness data, root
Determine the brightness in each brightness adjustment region in current reference row or column according to each compensation brightness data in current reference row or column
Adjusted value, according to each brightness adjustment value determining, carries out brightness adjustment to each the brightness adjustment region in current row or column.
Thus, the brightness data of whole screen is processed with row, and is processed so that the brightness data of whole screen is equal with arranging
Close to desired level data, improve due to backlight reduces and light mixing distance shortens and leads to display defect so that whole
Individual screen is shown the homogenization distribution it is achieved that brightness according to preferable Luminance Distribution.Meanwhile, determining brightness adjustment value
When, may be selected to be determined according to revised compensation brightness data, thus, it is to avoid driving voltage too high or too low adjustment, make
The amplitude obtaining driving voltage adjustment is more uniform, improves processing speed and the disposal ability of adjusting apparatus；And, this width
The more uniform adjustment operation of degree is it is ensured that whole screen can realize brightness adjustment, faster thus shortening response time.
Below by specific embodiment, technical scheme is described, the present invention including but not limited to
Lower embodiment.
As shown in Fig. 2 being a kind of flow chart of steps of screen brightness regulation method provided in an embodiment of the present invention, the method
Mainly include the following steps that：
Step 101：Determine each brightness adjustment region in the reference picture that current screen shows.
Wherein, described brightness adjustment region is according to the row and column of predetermined number, reference picture to be carried out dividing obtaining,
Described reference picture is the homogeneous image of gray scale, and each brightness adjustment region corresponds to a brightness data, each brightness adjustment area
Multiple pixels are included in domain.
Specifically, if the resolution of current screen is 640x480, can be according to the data processing energy of present intensity adjusting apparatus
Screen is divided into row region and the column region of predetermined number by power, for example：As shown in figure 3, by this screen be divided into 10 row and
10 row, then, this screen is divided into 100 brightness adjustment regions, wherein, often include in row brightness adjustment region 10 bright
64x48 pixel is comprised in degree adjustment region, and each brightness adjustment region.Each column brightness adjustment includes 10 in region
64x48 pixel is comprised in brightness adjustment region, and each brightness adjustment region.
Step 102：Determine the original intensity data in the brightness adjustment region with reference to row or column.
In this step, using technical grade charge coupled cell（Charge-coupled Device, CCD）Sampling instrument,
For example：CCD camera, extracts each pixel by the reference row or column mode shooting the image of display in current screen and corresponds to position
Put the brightness data at place, using each brightness data extracting as the brightness data stating each pixel in screen, then, by often
The brightness data that individual brightness adjustment region comprises is added and is averaging, and obtains the original intensity data in each brightness adjustment region.Need
It is noted that in embodiments of the present invention, a kind of preferred scheme is only using CCD camera, can also using existing its
His mode（Such as two color analysis instruments）Obtain the brightness data of each pixel.In addition, each brightness adjustment region is first
Beginning brightness data can also determine in other way, for example：The brightness data being comprised with each brightness adjustment region total
With the brightness data as each brightness adjustment region.
It should be noted that in embodiments of the present invention it is also possible to obtain the first of whole reference picture for reference picture
Beginning brightness data, then stores standby.
By Fig. 4（a）Shown, it is the ideal effect schematic diagram of the brightness data distribution of a reference picture, in screen picture
Between regional luminance higher, the brightness of surrounding is gradually lowered, this is because：Typically all compare in concern screen in view of user
Heart district domain, it is too high that the brightness of other peripheral regions need not be arranged, and therefore, in existing liquid crystal indicator, needs to arrange
There is blooming piece that most of light are gathered zone line, form ideal screen intensity distributed effect.
In the image that current shooting obtains, its actual Luminance Distribution is unsatisfactory, due to minimizing and the mixed light of backlight
The shortening of distance, leads to much places the display defects such as brightness irregularities, is formed and preferable screen intensity distributed effect
The Luminance Distribution inconsistent, uniformity is poor, such as Fig. 4（b）Shown.
Step 103：According to default fitting function relation and each the brightness adjustment region position in reference to row or column
Sequence, determines with reference to each brightness adjustment region corresponding desired level data in row or column.
In embodiments of the present invention, can be by numerical simulation tool, such as MATLAB software, will be every in current row or column
The brightness data in individual brightness adjustment region is mapped in preset coordinate system, and wherein, preset coordinate system is by with brightness adjustment region
Position sequence be horizontal coordinate and the coordinate system being vertical coordinate composition with brightness data.Specifically, in the simulation of MATLAB software
Interface selects preset coordinate system, and is illustrated in modeling interface, and the horizontal axis in this preset coordinate system represent brightness adjustment
The position sequence in region, vertical coordinate axess represent the brightness data in brightness adjustment region, wherein, the position value in brightness adjustment region with
This brightness adjustment region place current line or when the sequence in prostatitis is defined, such as：For the brightness adjustment region of certain a line, it
10 brightness adjustment regions position sequence in preset coordinate system is 10.Or, with the midpoint with reference to row or column as origin,
If reference line comprises 20 brightness adjustment regions, point midway is set to origin, the brightness adjustment area on the left of initial point
By -1 ~ -10, the position sequence in the brightness adjustment region on the right side of initial point is by 1 ~ 10 for the position sequence in domain.Then passing through MATLAB software will be current
In row or column, the brightness data in each brightness adjustment region imports, and according to position coordinateses and brightness data coordinate in default seat
The intrinsic brilliance data function for current row or column is drawn in mark system.As shown in fig. 5, it is assumed that for currently arbitrary
OK, get the brightness data in 400 brightness adjustment regions, be respectively mapped in coordinate system as shown in Figure 5, obtain by
The irregular curve R of multiple point compositions.Wherein, the horizontal coordinate in this coordinate system is the position in brightness adjustment region, from 0-400
Brightness data is all distributed with, and the span of brightness data is [200,320].
In view of in existing display device, it is provided with blooming piece to be converged to zone line.Accordingly, it would be desirable to according to
Blooming piece concentrating light principles, determine default fitting function relation：
, wherein, x1Represent the brightness adjustment area to point midway for the described original position with reference to row or column
Position sequence in reference to row or column for the domain, Y1Represent described each brightness adjustment to point midway of the original position with reference to row or column
The corresponding brightness data in region, a1、b1、c1Respectively determine the coefficient of this desired level data function；
, wherein, x2Represent brightness adjustment to terminal at position for the described point midway with reference to row or column
Position sequence in reference to row or column for the region, Y2Represent the described point midway with reference to row or column to terminal at position each brightness adjust
The corresponding brightness data in main plot domain, a2、b2、c2Respectively determine the coefficient of this desired level data function；
Using MATLAB software, the brightness data with reference to row or column is fitted, obtains desired level curveWith, thus, determine that a1、b1、c1It is respectively、、；a2、b2、c2It is respectively、、.
It should be noted that in embodiments of the present invention, default fitting function relation is not limited to above-mentioned fitting function relation,
Can also be similar to：Fitting function relation.
At this point it is possible to the desired level simulating data and curves S are also mapped onto in coordinate system as shown in Figure 5, thus
The difference of intrinsic brilliance data and desired level data in each brightness adjustment region can intuitively be seen.
It should be noted that this simulation process can be realized by other simulation softwards it is not limited to the present invention
Involved MATLAB software.
Step 104：The described brightness data in same brightness adjustment region is poor with described desired level data, mended
Repay brightness data.
Using numerical simulation software, intrinsic brilliance data function is poor with desired level data function, it is compensated bright
Degrees of data function, and the modeling interface in MATLAB software shows compensation brightness number
According to the curve distribution schematic diagram of function z, as shown in fig. 6, in this schematic diagram, horizontal coordinate represents each brightness adjustment region
Position, the difference of brightness data and desired level data in each brightness adjustment region of vertical coordinate representation, wherein, on the occasion of expression
The brightness data in this brightness adjustment region is bigger than desired level data, needs to turn down the brightness data in this brightness adjustment region；
Negative value represents that the brightness data in this brightness adjustment region is less than desired level data, needs the brightness in this brightness adjustment region
Data is heightened.
Step 105：Each is determined in current reference row or column according to each compensation brightness data in current reference row or column
The brightness adjustment value in brightness adjustment region.
The curve distribution schematic diagram of compensation brightness data function z as shown in Figure 6 understands, according to this compensation brightness data letter
Number z, can determine each brightness adjustment region corresponding compensation brightness data respectively, and using this compensation brightness data as brightness
The brightness adjustment value of adjustment region.
Preferably it is contemplated that in the curve distribution schematic diagram of compensation brightness data function z shown in Fig. 6, each row or column
Included in the differing greatly of each brightness adjustment region corresponding compensation brightness data, then for current row or column
Speech, the brightness adjustment region that the absolute value of compensation brightness data is larger just must significantly be adjusted, for example：A certain bright
The compensation brightness data of degree adjustment region is -5, and the compensation brightness data in the brightness adjustment region in the left side being adjacent is+10,
The compensation brightness data in the brightness adjustment region on the right side being adjacent is+8.Due to the present invention be by adjust driving voltage
Change the transmitance of liquid crystal, and then adjust screen intensity, therefore, this significantly brightness adjustment will necessarily increase driving
Carry disposal ability.For this reason, each brightness adjustment region in current row or column can be determined according to compensation brightness data function
Compensation, each compensation determining is averaging, obtains the compensation brightness meansigma methodss of current row or column, will mend
It is poor with the compensation brightness meansigma methodss obtaining to repay brightness data function, obtains revised compensation brightness data function, the bright of each brightness adjustment region in current row or column is determined according to revised compensation brightness data function
Degree adjusted value.
Step 106：According to each brightness adjustment value determining, each the brightness adjustment region in current row or column is carried out
Brightness adjustment.
Specifically, the brightness adjustment value in each brightness adjustment region determining is converted to correspondingly each brightness adjustment area
The voltage change in domain, and according to voltage change, the voltage of each corresponding pixel in brightness adjustment region is adjusted,
So that the brightness in each the brightness adjustment region in current reference row or column is adjusted.
Preferably, the supply of voltage signal can be realized by tcon plate.
In embodiments of the present invention, because there is respective brightness adjustment value in each brightness adjustment region, therefore, for appoint
The pixel comprising in one brightness adjustment region, as long as being belonging to same brightness adjustment region, its brightness adjustment value is the same
's.
Below by a specific example, the such scheme of the present invention is briefly described.
Assume determine 9 brightness adjustment regions of reference line brightness data be respectively 80,20,30,40,60,40,
30、20、10.The brightness data of this reference line is brought in numerical simulation software, simulates intrinsic brilliance data function, then according to default fitting function relation, determine desired level data function, and further determine that the desired level data in each brightness adjustment region：18、20、35、46、80、46、35、
20、18.Desired level data is poor with intrinsic brilliance data, respectively obtain the compensation brightness number in each brightness adjustment region
According to：-62、0、5、6、20、6、5、0、8.If using calculated compensation brightness data as brightness adjustment value, determining every respectively
Then 9 brightness adjustment regions of this reference line are carried out bright by individual compensation brightness data corresponding voltage change successively respectively
Degree adjustment.If in order to reduce the driving overload leading to due to adjustment voltage, can first be obtained according to each compensation brightness data
Compensation brightness meansigma methodss：- 1.3, then that compensation brightness data is poor with compensation brightness meansigma methodss, obtain brightness adjustment value：-
60.7th, 1.3,6.3,7.3,21.3,7.3,6.3,1.3,9.3, the 9 brightness adjustment regions then successively this reference line being obtained are divided
Do not carry out brightness adjustment.
According to above-mentioned Adjusted Option, first above-mentioned Adjusted Option can be executed to the every a line in the screen of display device, so
Again above-mentioned Adjusted Option is performed both by every string afterwards, specifically, by such scheme, determines the brightness adjustment comprising in every a line
The brightness adjustment value in region, and determine the brightness adjustment value in the brightness adjustment region comprising in every string, so, same brightness
Adjustment region will correspond to two brightness adjustment values（Brightness adjustment value on brightness adjustment value on line direction, column direction）, from
And, first with the brightness adjustment value of line direction, this brightness adjustment region can be carried out with brightness adjustment, recycle the bright of column direction
Degree adjusted value carries out brightness adjustment to this brightness adjustment region.First with the brightness adjustment value of column direction, this brightness can also be adjusted
Main plot domain carries out brightness adjustment, recycles the brightness adjustment value of line direction to carry out brightness adjustment to this brightness adjustment region.This
Bright this is not specifically limited, in addition it is also possible to i.e. to this brightness adjustment after determining the brightness adjustment value of line direction
Region is adjusted, and then adjusts according to the brightness that the brightness data in each the brightness adjustment region determining before determines column direction again
Whole value, and carry out second adjustment using this brightness adjustment value.Thus, not only so that every a line meets preferable brightness data and divides
Cloth, also so that every string also complies with preferable brightness data distribution.
By above-mentioned Adjusted Option, for each row or column, the brightness data using the current screen obtaining obtains reality
Brightness data function, and the brightness data according to blooming piece concentrating light principles and acquisition, matching obtains preferable brightness data
Function, and compared with desired level data function according to intrinsic brilliance data function, it is compensated brightness data function, enter
And determine brightness adjustment value using this compensation brightness data function, wherein, this brightness adjustment value can be compensation brightness data letter
The revised compensation brightness data of the compensation brightness data of number determination or more coarseness.Finally, according to determination
Brightness adjustment value corresponding brightness adjustment region is carried out with the adjustment of brightness, really pass through to adjust driving voltage, change liquid
Brilliant transmitance, and then realize the adjustment of screen intensity.By this Adjusted Option so that the brightness data of whole screen is all close to reason
Think brightness data, improve due to backlight reduce and light mixing distance shorten and the display defect that leads to so that whole screen
Shown the homogenization distribution it is achieved that brightness according to preferable Luminance Distribution.Meanwhile, when determining brightness adjustment value, can
Select to be determined according to revised compensation brightness data, thus, it is to avoid driving voltage too high or too low adjustment is so that drive
The amplitude of Voltage Cortrol is more uniform, improves processing speed and the disposal ability of adjusting apparatus；And, this amplitude is more
Uniform adjustment operation is it is ensured that whole screen can realize brightness adjustment, faster thus shortening response time.
Based on belonging to same inventive concept with above-mentioned screen brightness regulation method, the embodiment of the present invention additionally provides a kind of screen
Curtain brightness adjusting device, is just described to this device by specific embodiment below.
As shown in fig. 7, being a kind of screen intensity adjusting apparatus provided in an embodiment of the present invention, this device can be integrated in aobvious
It is also possible to hang over outward the outside of display device, its locations of structures does not limit for the inside of showing device.Wherein, this device is main
Including：
First processing units 201, for for determining each brightness adjustment region in the reference picture that current screen shows.Its
In, described brightness adjustment region is according to the row and column of predetermined number, reference picture to be carried out dividing obtaining, described with reference to figure
Picture is the homogeneous image of gray scale.
Second processing unit 202, for determining the original intensity data in the brightness adjustment region with reference to row or column.This second
Processing unit 202, specifically for being shot the reference row or column of the reference picture of display in current screen using industrial camera, and is carried
Take the brightness data at corresponding with each pixel position in the reference row or column of reference picture；Row according to predetermined number
The multiple brightness adjustment regions dividing with row, the brightness data that each brightness adjustment region is comprised is averaging, and obtains every
The original intensity data in individual brightness adjustment region.
3rd processing unit 203, for according to default fitting function relation, the described brightness adjustment area with reference to row or column
The original intensity data in domain and each the brightness adjustment region position sequence in reference to row or column, determines each in reference row or column
Brightness adjustment region corresponding desired level data.Wherein, the 3rd processing unit 203, specifically for according to blooming piece optically focused
Principle, determines default fitting function relation：, wherein, x1Represent the described original position with reference to row or column
Position sequence in reference to row or column for the brightness adjustment region to point midway, Y1Represent that each brightness adjustment region is corresponding bright
Degrees of data, a1、b1、c1Respectively determine the coefficient of this desired level data function, and,
, wherein, x2Represent brightness adjustment to terminal at position for the described point midway with reference to row or column
Position sequence in reference to row or column for the region, Y2Represent each corresponding brightness data in brightness adjustment region, a2、b2、c2It is respectively really
The coefficient of this desired level data function fixed；
According to fitting function relation, the brightness data with reference to row or column is fitted, obtains desired level curve；According to ideal
Brightness curve determines the desired level data in all brightness adjustment regions with reference to row or column.
Difference unit 204, for making the described brightness data in same brightness adjustment region with described desired level data
Difference, is compensated brightness data.
Fourth processing unit 205, for determining current reference according to each compensation brightness data in current reference row or column
The brightness adjustment value in each brightness adjustment region in row or column.Fourth processing unit 205, specifically for by described compensation brightness number
According to the compensation being defined as each brightness adjustment region in current row or column；Each compensation determining is asked flat
All, the compensation brightness meansigma methodss of current row or column are obtained；Described compensation is poor with described compensation brightness meansigma methodss, obtain
To the brightness adjustment value with reference to each brightness adjustment region in row or column.
Adjustment unit 206, for according to each brightness adjustment value determining, to each brightness adjustment in current row or column
Region carries out brightness adjustment.Wherein, this adjustment unit 206, specifically for：Described in determining, each brightness adjustment region is bright
Degree adjusted value is converted to the voltage change in correspondingly each brightness adjustment region, and bright to each according to described voltage change
The voltage of the degree corresponding pixel of adjustment region is adjusted, so that each the brightness adjustment region in current reference row or column
Brightness be adjusted.
Additionally, the embodiment of the present invention additionally provides a kind of liquid crystal indicator, adjust including screen intensity in above-described embodiment
Engagement positions.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or the reality combining software and hardware aspect
Apply the form of example.And, the present invention can be using in one or more computers wherein including computer usable program code
Usable storage medium（Including but not limited to disk memory, CD-ROM, optical memory etc.）The computer program of upper enforcement produces
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program flow process
Figure and/or block diagram are describing.It should be understood that can be by each stream in computer program instructions flowchart and/or block diagram
Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor instructing general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device is to produce
A raw machine is so that produced for reality by the instruction of computer or the computing device of other programmable data processing device
The device of the function of specifying in present one flow process of flow chart 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 can guide computer or other programmable data processing device with spy
Determine in the computer-readable memory that mode works so that the instruction generation inclusion being stored in this computer-readable memory refers to
Make the manufacture of device, this command device realize in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function of specifying in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that counting
On calculation machine or other programmable devices, execution series of operation steps to be to produce computer implemented process, thus in computer or
On other programmable devices, the instruction of execution is provided for realizing in one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function of specifying in individual square frame or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent
Select embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (7)
1. a kind of screen brightness regulation method for mura problem, is applied in directly-down liquid crystal display device, its feature exists
In methods described includes：
Obtain in the screen of currently displaying preset gray scale image and adjust according to multiple brightness that the row and column of predetermined number divides
The brightness data in main plot domain；
To current line or when the brightness data in all brightness adjustment regions in prostatitis carries out coordinate system mapping, obtain intrinsic brilliance
Data and curves；
According to default fitting function, the brightness data in coordinate system is fitted, obtains desired level data and curves；
By the corresponding brightness data of described intrinsic brilliance data and curves at the position in same brightness adjustment region and described ideal
The corresponding brightness data of brightness data curve is poor, is compensated brightness data curve；
Calculate the brightness adjustment value in each brightness adjustment region in current row or column according to described compensation brightness data and curves；
According to the brightness adjustment value in each brightness adjustment region described, each the brightness adjustment region in current row or column is carried out
Brightness adjustment.
2. the method for claim 1 it is characterised in that described according to default fitting function, to bright in coordinate system
Degrees of data is fitted, and obtains desired level data and curves, specifically includes：
According to blooming piece concentrating light principles, determine fitting function, wherein, x1Represent described reference row or column
Position sequence in reference to row or column for the brightness adjustment region to point midway for the original position, Y1Represent described reference row or column
Original position each corresponding brightness data in brightness adjustment region, a to point midway1、b1、c1Respectively determine that this ideal is bright
The coefficient of degrees of data function, and,
, wherein, x2Represent brightness adjustment area to terminal at position for the described point midway with reference to row or column
Position sequence in reference to row or column for the domain, Y2Represent the described point midway with reference to row or column each brightness adjustment at position to terminal
The corresponding brightness data in region, a2、b2、c2Respectively determine the coefficient of this desired level data function；
Brightness data in coordinate system is brought in fitting function, matching obtains desired level data and curves.
3. the method for claim 1 is it is characterised in that determine current row or column according to described compensation brightness data and curves
In each brightness adjustment region brightness adjustment value, specifically include：
Determine the compensation in each brightness adjustment region in current row or column according to described compensation brightness data and curves；
Each compensation is averaging, obtains the compensation brightness meansigma methodss of current row or column；
Described compensation brightness data function is poor with described compensation brightness meansigma methodss, obtain revised compensation brightness data letter
Number；
Adjusted according to the brightness that described revised compensation brightness data function determines each brightness adjustment region in current row or column
Whole value.
4. a kind of screen intensity adjusting apparatus for mura problem, are applied in directly-down liquid crystal display device, its feature exists
In described device includes：
First processing units, divide for obtaining the row and column according to predetermined number in the screen of currently displaying preset gray scale image
Multiple brightness adjustment regions brightness data；
Second processing unit, for current line or when the brightness data in all brightness adjustment regions in prostatitis carries out coordinate system
Mapping, obtains intrinsic brilliance data and curves；
3rd processing unit, for according to default fitting function, being fitted to the brightness data in coordinate system, obtaining ideal
Brightness data curve；
Difference unit, for by the corresponding brightness number of described intrinsic brilliance data and curves at the position in same brightness adjustment region
Poor according to brightness data corresponding with described desired level data and curves, it is compensated brightness data curve；
Fourth processing unit, for calculating each brightness adjustment region in current row or column according to described compensation brightness data and curves
Brightness adjustment value；
Adjustment unit, for the brightness adjustment value according to each brightness adjustment region described, bright to each in current row or column
Degree adjustment region carries out brightness adjustment.
5. device as claimed in claim 4 is it is characterised in that described 3rd processing unit, specifically for：
According to blooming piece concentrating light principles, determine fitting function, wherein, x1Represent described reference row or column
Position sequence in reference to row or column for the brightness adjustment region to point midway for the original position, Y1Represent described reference row or column
Original position each corresponding brightness data in brightness adjustment region, a to point midway1、b1、c1Respectively determine that this ideal is bright
The coefficient of degrees of data function, and,
, wherein, x2Represent brightness adjustment area to terminal at position for the described point midway with reference to row or column
Position sequence in reference to row or column for the domain, Y2Represent the described point midway with reference to row or column each brightness adjustment at position to terminal
The corresponding brightness data in region, a2、b2、c2Respectively determine the coefficient of this desired level data function；
Brightness data in coordinate system is brought in fitting function, matching obtains desired level data and curves.
6. device as claimed in claim 5 is it is characterised in that described fourth processing unit, specifically for：
Determine the compensation in each brightness adjustment region in current row or column according to described compensation brightness data and curves；
Each compensation is averaging, obtains the compensation brightness meansigma methodss of current row or column；
Described compensation brightness data function is poor with described compensation brightness meansigma methodss, obtain revised compensation brightness data letter
Number；
Adjusted according to the brightness that described revised compensation brightness data function determines each brightness adjustment region in current row or column
Whole value.
7. a kind of television set is it is characterised in that include described device as arbitrary in claim 4-6.
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104715731A (en) | 2015-06-17 |
| CN104715731B (en) | 2017-03-22 |
| CN106448608B (en) | 2020-05-12 |
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