CN104715731B - Screen brightness adjustment method and device and liquid crystal display device - Google Patents
Screen brightness adjustment method and device and liquid crystal display device Download PDFInfo
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- CN104715731B CN104715731B CN201510106382.0A CN201510106382A CN104715731B CN 104715731 B CN104715731 B CN 104715731B CN 201510106382 A CN201510106382 A CN 201510106382A CN 104715731 B CN104715731 B CN 104715731B
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a screen brightness adjustment method and device and a liquid crystal display device. The method mainly comprises the steps that initial brightness data of brightness adjustment regions at reference rows or reference columns are determined; according to the preset fitting function relation, the initial brightness data of the brightness adjustment regions at the reference rows or the reference columns and the locations and sequences of all the brightness adjustment regions in the reference rows or the reference columns, ideal brightness data corresponding to each brightness adjustment region at the reference rows or the reference columns are determined, the brightness data in the same brightness adjustment region are subtracted from the ideal brightness data to obtain compensated brightness data; according to the compensated brightness data, brightness adjustment values of all the brightness adjustment regions in the current reference rows or the current reference columns are determined; according to the brightness adjustment values, the brightness of the brightness adjustment regions is adjusted, so that brightness data of a whole screen approach the ideal brightness data, the display defects caused due to the fact that the number of backlights is reduced, and the light mixing distance is shortened are overcome, the whole screen conducts displaying according to ideal brightness distribution, and uniform distribution of the brightness is achieved.
Description
Technical field
A kind of the present invention relates to display technology field, more particularly to screen brightness regulation method, device and liquid crystal display dress
Put.
Background technology
With the fast development of Display Technique industry, liquid crystal display (Liquid Crystal Display, LCD) is
Become the product of main flow in recent years.Under order about of the user's request with industry competition pressure, the deisgn approach of LCD is in lighter
The features such as thin, small power consumption.
As LCD is not the display of active light-emitting type, need dependence backlight to provide emergent light and could realize showing.
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
Little to wait requirement to be designed, more feasible mode realizes LCD by reducing in backlight module by way of light mixing distance
It is thinning, in addition, reducing the power consumption of LCD by way of reducing backlight quantity.
But, the reduction of backlight quantity so that adjacent backlight it is in larger distance, two backlight middle positions
Brightness is substantially dark in the brightness of two backlight positions, reduces light mixing distance, it is impossible to ensure light that backlight sends compared with
Good is mixed to get uniform backlight, so as to causing backlight module to send the uneven backlight of light and shade, forming Mura phenomenons, affect
The display effect of LCD.
The content of the invention
The embodiment of the present invention provides a kind of screen brightness regulation method, device and liquid crystal indicator, existing 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 for waiting display defect of brightness.
The embodiment of the present invention is employed the following technical solutions：
A kind of screen brightness regulation method, is applied in liquid crystal indicator, and methods described includes：
Determine each brightness adjustment region in the reference picture that current screen shows, wherein, the brightness adjustment region is
Row and column according to predetermined number carries out dividing what is obtained to reference picture, and the reference picture is the homogeneous image of gray scale；
Following operation is performed respectively for every a line brightness adjustment region or each row brightness adjustment region：
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 brightness adjustment region of the reference row or column and
Position sequence of each brightness adjustment region in reference to row or column, it is determined that with reference to each corresponding reason in brightness adjustment region in row or column
Think brightness data；
Will be the original intensity data in same brightness adjustment region poor with the desired level data, it is compensated bright
Degrees of data；
Each brightness adjustment in current reference row or column is determined according to each compensation brightness data in current reference row or column
The brightness adjustment value in region；
According to each brightness adjustment value for determining, brightness tune is carried out to each the brightness adjustment region in current row or column
It is whole.
A kind of screen intensity adjusting apparatus, are applied in liquid crystal indicator, and described device includes：
First processing units, for determining each brightness adjustment region in reference picture that current screen shows, wherein, institute
It is reference picture to be carried out dividing what is obtained according to the row and column of predetermined number to state brightness adjustment region, and the reference picture is ash
The homogeneous image of degree；
Second processing unit, for obtaining the original intensity data in the brightness adjustment region with reference to row or column；
3rd processing unit, for the brightness adjustment region according to default fitting function relation, the reference row or column
Position sequence in reference to row or column of original intensity data and each brightness adjustment region, it is determined that with reference in row or column, each is bright
The corresponding desired level data of degree adjustment region；
Difference unit, for will be the brightness data in same brightness adjustment region poor with the desired level data,
It is compensated brightness data；
Fourth processing unit, for according to each compensation brightness data in current reference row or column determine current reference row or
The brightness adjustment value in each brightness adjustment region in row；
Adjustment unit, for according to each brightness adjustment value for determining, to each the brightness adjustment area in current row or column
Domain carries out brightness adjustment.
A kind of liquid crystal indicator, including described screen intensity adjusting apparatus.
By above-mentioned Adjusted Option, for each reference row or column, according to default fitting function relation and acquisition
Original intensity data, fitting obtain 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 the compensation brightness data function, wherein,
The brightness adjustment value can be that the compensation brightness data that compensation brightness data function determines, or more coarseness are repaiied
Compensation brightness data after just.Finally, the tune of brightness is carried out according to the brightness adjustment value for determining to corresponding brightness adjustment region
It is whole, specifically, can be that the brightness adjustment value for first passing through line direction determination is adjusted to the brightness adjustment region, then by row
The brightness adjustment value that direction determines is adjusted to the brightness adjustment region.Really by adjusting driving voltage, change liquid crystal
Transmitance, and then realize the adjustment of screen intensity.By the Adjusted Option so that the brightness data of whole screen is close to ideal
Brightness data, improve due to backlight reduce and light mixing distance shorten and the uneven display of caused backlight illumination lack
Fall into so that whole screen is shown that according to preferable Luminance Distribution the homogenization for realizing brightness is distributed.Meanwhile, it is determined that
During brightness adjustment value, may be selected to be determined according to revised compensation brightness data, so as to, it is to avoid driving voltage is too high or too low
Adjustment so that driving voltage adjustment amplitude it is more uniform, improve the processing speed and disposal ability of adjusting apparatus；And
And, this amplitude more uniformly adjustment operation, it is ensured that whole screen can realize brightness adjustment faster, so as to shorten sound
Between seasonable.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly introduced, 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, can be obtaining which 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；
The step of Fig. 2 is a kind of screen brightness regulation method provided in an embodiment of the present invention flow chart；
Fig. 3 divides schematic diagram for a kind of row, column provided in an embodiment of the present invention；
Fig. 4 (a) is the ideal effect schematic diagram of brightness data distribution；
Fig. 4 (b) is the actual effect schematic diagram of brightness data distribution；
Fig. 5 is intrinsic brilliance data function in the embodiment of the present invention and desired level data function in preset coordinate system
Distribution schematic diagram；
Curve distribution schematic diagrames of the Fig. 6 for 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 is described in detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than the enforcement of whole
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Here is it should be noted that as the program is directed to liquid crystal indicator, the brightness of its screen is by two
What aspect was determined, on the one hand, be backlight illumination that the backlight module of display device sends, be on the other hand the light transmittance of liquid crystal.
In the present invention, as the quantity of backlight is fixed, its position is also fixation, therefore, can not be by changing backlight
The mode of brightness adjusts the brightness of screen；And for the light transmittance of 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
Multiple brightness adjustment regions are divided into, then, according to iteration theorem, for all brightness adjustment areas in current screen per a line
All brightness adjustment regions of domain and each row perform following operation respectively：It is determined that with reference to row or column brightness adjustment region just
Beginning brightness data, according to default fitting function relation, the original intensity data in each brightness adjustment region and each brightness
Position sequence of the adjustment region in reference to row or column, it is determined that with reference to the corresponding desired level number in each brightness adjustment region in row or column
According to, the brightness data in same brightness adjustment region is poor with the desired level data, it is compensated brightness data, root
The brightness in each brightness adjustment region in current reference row or column is determined according to each compensation brightness data in current reference row or column
Adjusted value, according to each brightness adjustment value for determining, carries out brightness adjustment to each the brightness adjustment region in current row or column.
So as to the brightness data of whole screen being processed with row, and being processed with arranging so that the brightness data of whole screen is equal
Desired level data are close to, are improved as backlight is reduced and light mixing distance shortens and caused display defect so that whole
Individual screen is shown that according to preferable Luminance Distribution the homogenization for realizing brightness is distributed.Meanwhile, it is determined that brightness adjustment value
When, may be selected to be determined according to revised compensation brightness data, so as to, it is to avoid driving voltage too high or too low adjustment, make
The amplitude for obtaining driving voltage adjustment is more uniform, improves the processing speed and disposal ability of adjusting apparatus；And, this width
The more uniform adjustment operation of degree, it is ensured that whole screen can realize brightness adjustment faster, so as to shorten the response time.
Technical scheme is described below by specific embodiment, the present invention including but not limited to
Lower embodiment.
As shown in Fig. 2 the step of being a kind of screen brightness regulation method provided in an embodiment of the present invention flow chart, the method
Mainly include the following steps that：
Step 101：Determine each brightness adjustment region in the reference picture that current screen shows.
Wherein, the brightness adjustment region is reference picture to be carried out dividing what is obtained according to the row and column of predetermined number,
The reference picture is the homogeneous image of gray scale, each brightness adjustment region one brightness data of correspondence, each brightness adjustment area
Include multiple pixels in domain.
Specifically, if the resolution ratio of current screen is 640x480, can be according to the data processing energy of present intensity adjusting apparatus
Screen is divided into power row region and the column region of predetermined number, for example：As shown in figure 3, by the screen be divided into 10 rows and
10 row, then, the screen is divided into 100 brightness adjustment regions, wherein, often include in row brightness adjustment region 10 it is bright
64x48 pixel is included in degree adjustment region, and each brightness adjustment region.Each column brightness adjustment includes 10 in region
64x48 pixel is included in brightness adjustment region, and each brightness adjustment region.
Step 102：It is determined that 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 correspondence position by the reference row or column mode for shooting the image shown in current screen
The brightness data at place is put, using each brightness data for extracting as the brightness data for stating each pixel in screen, then, will be every
The brightness data that individual brightness adjustment region includes 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, be only a kind of preferred scheme using CCD camera, can also using it is existing its
His mode (such as two color analysis instruments) obtains 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 included with each brightness adjustment region it is 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 the ideal effect schematic diagram of the brightness data distribution for Fig. 4 (a) Suo Shi, being a reference picture, in screen picture
Between regional luminance it is higher, the brightness of surrounding is gradually lowered, this is because：It is typically all to 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, therefore, in existing liquid crystal indicator, need 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 is obtained, its actual Luminance Distribution is unsatisfactory, due to reduction and the mixed light of backlight
The shortening of distance, causes a lot of places the display defects such as brightness irregularities occur, is formed and preferable screen intensity distributed effect
The inconsistent, Luminance Distribution that uniformity is poor, shown in such as Fig. 4 (b).
Step 103：According to default fitting function relation and each position of brightness adjustment region in reference to row or column
Sequence, it is determined that with reference to the corresponding desired level data in each brightness adjustment region in row or column.
In embodiments of the present invention, can be by numerical simulation tool, such as MATLAB softwares, will be every in current row or column
The brightness data in individual brightness adjustment region is mapped in preset coordinate system, wherein, and preset coordinate system is by with brightness adjustment region
Position sequence be horizontal coordinate and with coordinate system that brightness data is vertical coordinate composition.Specifically, in the simulation of MATLAB softwares
Interface selects preset coordinate system, and is illustrated in modeling interface, and the horizontal axis in the preset coordinate system represent brightness adjustment
The position sequence in region, vertical reference axis represent the brightness data in brightness adjustment region, wherein, the position value in brightness adjustment region with
The brightness adjustment region place current line or when the sequence in prostatitis is defined, for example：For the brightness adjustment region of certain a line, which
The position sequence of 10 brightness adjustment regions in preset coordinate system is 10.Or, with the midpoint with reference to row or column as origin,
If reference line includes 20 brightness adjustment regions, point midway is set to into origin, the brightness adjustment area on the left of origin
By -1～-10, the position sequence in the brightness adjustment region on the right side of origin is by 1～10 for the position sequence in domain.Then ought by MATLAB softwares
In front row or column, the brightness data in each brightness adjustment region is imported, and according to position coordinates and brightness data coordinate default
Intrinsic brilliance data function the Y '=f (x) for current row or column is drawn in coordinate system.As shown in fig. 5, it is assumed that for as predecessor
A line, gets the brightness data in 400 brightness adjustment regions, is respectively mapped in coordinate system as shown in Figure 5, is obtained
The irregular curve R being made up of multiple points.Wherein, position of the horizontal coordinate in the coordinate system for brightness adjustment region, from 0-
400 are all distributed with brightness data, and the span of brightness data is [200,320].
In in view of 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 that the brightness at the original position to point midway of the reference row or column is adjusted
Position sequence of the main plot domain in reference to row or column, Y1Represent original position each brightness to point midway of the reference row or column
The corresponding brightness data of adjustment region, a1、b1、c1Respectively determine the coefficient of the desired level data function；
Wherein, x2Represent the brightness of the point midway of the reference row or column to terminal at position
Position sequence of the adjustment region in reference to row or column, Y2Each is bright at position to terminal to represent the point midway of the reference row or column
The corresponding brightness data of degree adjustment region, a2、b2、c2Respectively determine the coefficient of the desired level data function；
Using MATLAB softwares, the brightness data with reference to row or column is fitted, obtains desired level curveWithSo as to determine that a1、b1、c1Respectively z1、z2、z3；a2、b2、c2Respectively
z4、z5、z6。
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 desired level data and curves S for fitting are also mapped onto in coordinate system as shown in Figure 5, so as to
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 softwares.
Step 104：The brightness data in same brightness adjustment region is poor with the desired level data, mended
Repay brightness data.
It is using numerical simulation software, intrinsic brilliance data function is poor with desired level data function, it is compensated bright
Degrees of data functionAnd the modeling interface in MATLAB softwares shows compensation brightness number
According to the curve distribution schematic diagram of function z, as shown in fig. 6, in the 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 the brightness adjustment region is bigger than desired level data, and the brightness data in the brightness adjustment region is turned down by needs；
Negative value represents that the brightness data in the brightness adjustment region is less than desired level data, needs the brightness in the brightness adjustment region
Data are 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 the compensation brightness data letter
Number z, can determine the corresponding compensation brightness data in each brightness adjustment region respectively, and using the compensation brightness data as brightness
The brightness adjustment value of adjustment region.
Preferably, it is contemplated that in the curve distribution schematic diagram of the compensation brightness data function z shown in Fig. 6, each row or column
Included in each corresponding compensation brightness data in brightness adjustment region differ greatly, then for current row or column
Speech, the brightness adjustment region that the absolute value of compensation brightness data is larger just significantly must be adjusted, for example：It is a certain bright
The compensation brightness data of degree adjustment region are -5, and the compensation brightness data in the brightness adjustment region in the left side being adjacent are+10,
The compensation brightness data in the brightness adjustment region on the right side being adjacent are+8.Due to the present invention be by adjust driving voltage come
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 purpose, each brightness adjustment region in current row or column can be determined according to compensation brightness data function
Compensation, each compensation for determining is averaging, the compensation brightness mean value n of current row or column is obtained, and will be mended
It is poor with the compensation brightness mean value for obtaining to repay brightness data function, obtains revised compensation brightness data function z (x) ,=z
X ()-n, determines the brightness adjustment in each brightness adjustment region in current row or column according to revised compensation brightness data function
Value.
Step 106：According to each brightness adjustment value for 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 for determining is converted to into correspondingly each brightness adjustment area
The voltage change in domain, and the voltage of each corresponding pixel in brightness adjustment region is adjusted according to voltage change,
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 plates.
In embodiments of the present invention, as there is respective brightness adjustment value in each brightness adjustment region, therefore, for appointing
The pixel included in one brightness adjustment region, as long as being belonging to same brightness adjustment region, its brightness adjustment value is the same
's.
The such scheme of the present invention is briefly described below by a specific example.
Assume determine reference line 9 brightness adjustment regions 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, intrinsic brilliance data function Y '=f is simulated
X (), then according to default fitting function relationDetermine desired level data functionAnd further determine that the desired level data in each brightness adjustment region：18、20、35、46、80、46、35、
20、18.Desired level data are 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 calculated compensation brightness data are determined every respectively as brightness adjustment value
Then 9 brightness adjustment regions of the reference line are carried out bright by individual compensation brightness data corresponding voltage change successively respectively
Degree adjustment.If in order to reduce due to adjustment voltage and caused driving overload, first can be obtained according to each compensation brightness data
Compensation brightness mean value：- 1.3, it is then that compensation brightness data are poor with compensation brightness mean value, obtain brightness adjustment value：-
60.7th, 1.3,6.3,7.3,21.3,7.3,6.3,1.3,9.3,9 brightness adjustment regions that then successively the reference line is obtained point
Brightness adjustment is not carried out.
According to above-mentioned Adjusted Option, can first to the screen of display device in every a line perform above-mentioned Adjusted Option, so
Above-mentioned Adjusted Option is performed both by each row again afterwards, specifically, by such scheme, it is determined that the brightness adjustment included in per a line
The brightness adjustment value in region, and the brightness adjustment value in the brightness adjustment region included in determining each row, so, same brightness
Adjustment region will correspond to two brightness adjustment values (the brightness adjustment value in brightness adjustment value, column direction on line direction), from
And, brightness adjustment can be carried out to the brightness adjustment region first with the brightness adjustment value of line direction, recycle the bright of column direction
Degree adjusted value carries out brightness adjustment to the brightness adjustment region.The brightness can also be adjusted first with the brightness adjustment value of column direction
Main plot domain carries out brightness adjustment, recycles the brightness adjustment value of line direction to carry out brightness adjustment to the brightness adjustment region.This
It is bright that this is not specifically limited, in addition it is also possible to i.e. to the brightness adjustment after the brightness adjustment value for determining line direction
Region is adjusted, and then determines that the brightness of column direction is adjusted according to the brightness data in each the brightness adjustment region for determining before again
Whole value, and second adjustment is carried out using the brightness adjustment value.So as to not only so that meeting preferable brightness data point per a line
Cloth, also so that each row also comply with preferable brightness data distribution.
By above-mentioned Adjusted Option, for each row or column, reality is obtained using the brightness data of the current screen for obtaining
Brightness data function, and according to blooming piece concentrating light principles and the brightness data of acquisition, fitting obtains preferable brightness data
Function, and compared with desired level data function according to intrinsic brilliance data function, brightness data function is compensated, is entered
And brightness adjustment value is determined using the compensation brightness data function, wherein, the brightness adjustment value can be compensation brightness data letter
The compensation brightness data of number determination, or the more revised compensation brightness data of coarseness.Finally, according to determination
Brightness adjustment value carry out the adjustment of brightness to corresponding brightness adjustment region, really by adjusting driving voltage, change liquid
Brilliant transmitance, and then realize the adjustment of screen intensity.By the Adjusted Option so that the brightness data of whole screen is close to reason
Think brightness data, improve as backlight is reduced and light mixing distance shortens and caused display defect so that whole screen
Shown according to preferable Luminance Distribution, realized the homogenization distribution of brightness.Meanwhile, it is determined that during brightness adjustment value, can
Select to be determined according to revised compensation brightness data, so as to, it is to avoid driving voltage too high or too low adjustment so that drive
The amplitude of Voltage Cortrol is more uniform, improves the processing speed and disposal ability of adjusting apparatus；And, this amplitude is more
Uniform adjustment operation, it is ensured that whole screen can realize brightness adjustment faster, so as to shorten the response time.
Belong to same inventive concept based on 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 the 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, the device can be integrated in aobvious
The inside of showing device, it is also possible to hang over outward the outside of display device, its locations of structures is not limited.Wherein, the device is main
Including：
First processing units 201, for for determining each brightness adjustment region in reference picture that current screen shows.
Wherein, the brightness adjustment region is reference picture to be carried out dividing what is obtained according to the row and column of predetermined number, the reference
Image 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 shown 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；According to the row of predetermined number
The multiple brightness adjustment regions divided with row, are averaging to the brightness data that each brightness adjustment region includes, and obtain every
The original intensity data in individual brightness adjustment region.
3rd processing unit 203, for the brightness adjustment area according to default fitting function relation, the reference row or column
The position sequence of the original intensity data in domain and each brightness adjustment region in reference to row or column, it is determined that refer to each in row or column
The corresponding desired level data in brightness adjustment region.Wherein, the 3rd processing unit 203, specifically for according to blooming piece optically focused
Principle, determines default fitting function relation：Wherein, x1Represent the original position of the reference row or column
Position sequence of the brightness adjustment region to point midway in reference to row or column, Y1Represent that each brightness adjustment region is corresponding bright
Degrees of data, a1、b1、c1Respectively determine the coefficient of the desired level data function, and,
Wherein, x2Represent the brightness of the point midway of the reference row or column to terminal at position
Position sequence of the adjustment region in reference to row or column, Y2Represent each corresponding brightness data in brightness adjustment region, a2、b2、c2Respectively
For determining the coefficient of the desired level data function；
According to fitting function relation, the brightness data with reference to row or column is fitted, obtains desired level curve；According to
Desired level curve determines the desired level data in all brightness adjustment regions with reference to row or column.
Difference unit 204, for the brightness data in same brightness adjustment region is made with the 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 the compensation brightness number
According to the compensation for being defined as each brightness adjustment region in current row or column；Each compensation for determining is asked into flat
, obtain the compensation brightness mean value of current row or column；The compensation is poor with the compensation brightness mean value, obtain
The brightness adjustment value in each brightness adjustment region in reference to row or column.
Adjustment unit 206, for according to each brightness adjustment value for determining, to each brightness adjustment in current row or column
Region carries out brightness adjustment.Wherein, the 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 the voltage change
The voltage of the corresponding pixel of degree 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 adopt complete hardware embodiment, complete software embodiment or with reference to the reality in terms of software and hardware
Apply the form of example.And, the present invention can be using the computer for wherein including computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention be 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 computer program instructions flowchart and/or each stream in block diagram
The combination of journey and/or square frame and flow chart and/or the flow process in block diagram and/or square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to
Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or
The function of specifying in multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one
The step of function of specifying in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into the had altered of the scope of the invention and change.
Obviously, those skilled in the art can carry out the essence of various changes and modification 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 comprising these changes and modification.
Claims (11)
1. a kind of screen brightness regulation method, is applied in liquid crystal indicator, it is characterised in that methods described includes：
Determine each brightness adjustment region in the reference picture that current screen shows, wherein, the brightness adjustment region be according to
The row and column of predetermined number carries out dividing what is obtained to reference picture, and the reference picture is the homogeneous image of gray scale；
Following operation is performed respectively for every a line brightness adjustment region or each row brightness adjustment region：
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 brightness adjustment region of the reference row or column and each
Position sequence of the brightness adjustment region in reference to row or column, it is determined that bright with reference to the corresponding ideal in each brightness adjustment region in row or column
Degrees of data；
Will be the original intensity data in same brightness adjustment region poor with the desired level data, 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 for determining, brightness adjustment is carried out to each the brightness adjustment region in current row or column.
2. the method for claim 1, it is characterised in that
It is described according to default fitting function relation, the original intensity data in the brightness adjustment region of the reference row or column and
Position sequence of each brightness adjustment region in reference to row or column, it is determined that with reference to each corresponding reason in brightness adjustment region in row or column
Think brightness data, specifically include：
According to blooming piece concentrating light principles, default fitting function relation is determined：
Wherein, x1Represent the brightness adjustment region at the original position to point midway of the reference row or column
Position sequence in reference to row or column, Y1Represent the original position of the reference row or column each brightness adjustment area to point midway
The corresponding brightness data in domain, a1、b1、c1Respectively determine the coefficient of the desired level data function, and,
Wherein, x2Represent the brightness adjustment area of the point midway of the reference row or column to terminal at position
Position sequence of the domain in reference to row or column, Y2Represent the point midway of the reference row or column each brightness adjustment at position to terminal
The corresponding brightness data in region, a2、b2、c2Respectively determine the coefficient of the desired level data function；
According to the fitting function relation, the brightness data with reference to row or column is fitted, obtains desired level curve；
The desired level data in all brightness adjustment regions with reference to row or column are determined according to the desired level curve.
3. the method for claim 1, it is characterised in that
In the row or column according to current reference, each compensation brightness data determines each brightness adjustment in current reference row or column
The brightness adjustment value in region, specifically includes：
The compensation brightness data are defined as into the compensation in each brightness adjustment region in current row or column；
Each compensation for determining is averaging, the compensation brightness mean value of current row or column is obtained；
The compensation is poor with the compensation brightness mean value, obtain with reference to each brightness adjustment region in row or column
Brightness adjustment value.
4. the method for claim 1, it is characterised in that
Described each brightness adjustment value according to determination, carries out brightness tune to each the brightness adjustment region in current row or column
It is whole, specifically include：
Described in determining, the brightness adjustment value in each brightness adjustment region is converted to the electricity in correspondingly each brightness adjustment region
Pressure adjusted value, and the voltage of each corresponding pixel in brightness adjustment region is adjusted according to the voltage change, with
So that the brightness in each the brightness adjustment region in current reference row or column is adjusted.
5. the method as described in claim 1-4 is arbitrary, it is characterised in that obtain brightness adjustment region with reference to row or column just
Beginning brightness data, specifically includes：
Shot using technical grade charge coupled cell CCD sampling instruments the reference line of reference picture that shows in current screen or
Row, and extract the brightness data at corresponding with each pixel position in the reference row or column of the reference picture；
Multiple brightness adjustment regions that row and column according to predetermined number is divided, what each brightness adjustment region was included is bright
Degrees of data is averaging, and obtains the original intensity data in each brightness adjustment region.
6. a kind of screen intensity adjusting apparatus, it is characterised in that be applied in liquid crystal indicator, described device includes：
First processing units, it is for determining each brightness adjustment region in reference picture that current screen shows, wherein, described bright
Degree adjustment region is reference picture to be carried out dividing what is obtained according to the row and column of predetermined number, and the 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 brightness adjustment region of the reference row or column just
The position sequence of beginning brightness data and each brightness adjustment region in reference to row or column, it is determined that adjust with reference to each brightness in row or column
The corresponding desired level data in main plot domain；
Difference unit, for will be the original intensity data in same brightness adjustment region poor with the desired level data,
It is compensated 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 for determining, entering to each the brightness adjustment region in current row or column
Row brightness adjustment.
7. device as claimed in claim 6, it is characterised in that the 3rd processing unit, specifically for：
According to blooming piece concentrating light principles, default fitting function relation is determined：
Wherein, x1Represent the brightness adjustment area at the original position to point midway of the reference row or column
Position sequence of the domain in reference to row or column, Y1Represent the original position of the reference row or column each brightness adjustment to point midway
The corresponding brightness data in region, a1、b1、c1Respectively determine the coefficient of the desired level data function, and,
Wherein, x2Represent the brightness adjustment area of the point midway of the reference row or column to terminal at position
Position sequence of the domain in reference to row or column, Y2Represent the point midway of the reference row or column each brightness adjustment at position to terminal
The corresponding brightness data in region, a2、b2、c2Respectively determine the coefficient of the desired level data function；
According to the fitting function relation, the brightness data with reference to row or column is fitted, obtains desired level curve；
The desired level data in all brightness adjustment regions with reference to row or column are determined according to the desired level curve.
8. device as claimed in claim 6, it is characterised in that the fourth processing unit, specifically for：
The compensation brightness data are defined as into the compensation in each brightness adjustment region in current row or column；
Each compensation for determining is averaging, the compensation brightness mean value of current row or column is obtained；
The compensation is poor with the compensation brightness mean value, obtain with reference to each brightness adjustment region in row or column
Brightness adjustment value.
9. device as claimed in claim 6, it is characterised in that the adjustment unit, specifically for：
Described in determining, the brightness adjustment value in each brightness adjustment region is converted to the electricity in correspondingly each brightness adjustment region
Pressure adjusted value, and the voltage of each corresponding pixel in brightness adjustment region is adjusted according to the voltage change, with
So that the brightness in each the brightness adjustment region in current reference row or column is adjusted.
10. the device as described in claim 6-9 is arbitrary, it is characterised in that the second processing unit, specifically for：
Shot using technical grade charge coupled cell CCD sampling instruments the reference line of reference picture that shows in current screen or
Row, and extract the brightness data at corresponding with each pixel position in the reference row or column of the reference picture；
Multiple brightness adjustment regions that row and column according to predetermined number is divided, what each brightness adjustment region was included is bright
Degrees of data is averaging, and obtains the original intensity data in each brightness adjustment region.
11. a kind of liquid crystal indicators, it is characterised in that include the device as described in claim 6-10 is arbitrary.
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| CN201510106382.0A CN104715731B (en) | 2015-03-11 | 2015-03-11 | Screen brightness adjustment method and device and liquid crystal display device |
| CN201611068047.7A CN106448608B (en) | 2015-03-11 | 2015-03-11 | Screen brightness adjusting method and device aiming at mura problem and television |
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