CN107863084A - Driving method and driving device of display device - Google Patents
Driving method and driving device of display device Download PDFInfo
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- CN107863084A CN107863084A CN201711382002.1A CN201711382002A CN107863084A CN 107863084 A CN107863084 A CN 107863084A CN 201711382002 A CN201711382002 A CN 201711382002A CN 107863084 A CN107863084 A CN 107863084A
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
A driving method of a display device, comprising: acquiring the gray scale of a sub-pixel corresponding to each pixel unit in a preset area; respectively calculating data characteristic values of a plurality of gray scales corresponding to each sub-pixel in the preset area according to the gray scales of the sub-pixels; if the data characteristic values of the plurality of gray scales corresponding to each sub-pixel in the preset area accord with a second preset condition, the gamma value of the red sub-pixel in the preset area is adjusted according to the second preset condition, so that the gamma value of the adjusted red sub-pixel is larger than the gamma value of the red sub-pixel before adjustment, the equivalent gray scale of the adjusted red sub-pixel is larger than the data characteristic value of the gray scale of the green sub-pixel, and the equivalent gray scale of the adjusted red sub-pixel is larger than the data characteristic value of the gray scale of the blue sub-pixel. After the gamma value of the red sub-pixel is increased, the brightness proportion of red at a large visual angle is reduced relative to that of green blue, neutral color is presented, and the color cast phenomenon at the large visual angle is improved.
Description
Technical field
The application belongs to display technology field, more particularly to the driving method and drive device of a kind of display device.
Background technology
Because liquid crystal display (Liquid Crystal Display, LCD) screen has energy-conserving and environment-protective, light etc. excellent
Gesture, it is widely used at present in field of display, because the lcd screen of straight-down negative has higher contrast and faster
Response speed, obtain the generally accreditation of in the market.
But the lcd screen of straight-down negative have big visual angle color offset phenomenon than it is more serious the shortcomings that, and this shortcoming is straight
The design of down type LCD screen it is intrinsic, i.e., the design structure of directly-down type LCD screen in itself causes the phenomenon of colour cast under big visual angle
It can not be completely eliminated.
The content of the invention
In view of this, the embodiment of the present application provides the driving method and drive device of a kind of display device, to improve mesh
Color offset phenomenon under the preceding big visual angle of display device.
The embodiment of the present application provides a kind of driving method of display device, including：
Obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area；
According to the GTG of the sub-pixel, multiple GTGs corresponding to each sub-pixel in the predeterminable area are calculated respectively
Data feature values；
If the data feature values of multiple GTGs meet the second preparatory condition corresponding to each sub-pixel in the predeterminable area,
The gamma value of red sub-pixel in sub-pixel in the predeterminable area is then adjusted according to second preparatory condition, to adjust
The gamma value of red sub-pixel afterwards is more than the gamma value of the red sub-pixel before adjustment, red sub-pixel after adjustment it is equivalent
GTG is more than the data feature values of the GTG of green sub-pixels, and the equivalent GTG of the red sub-pixel after adjustment is more than blueness
The data feature values of the GTG of pixel.
The embodiment of the present application additionally provides a kind of drive device of display device, including：
Acquisition module, for obtaining the GTG of each sub-pixel corresponding to pixel cell in predeterminable area；
Data feature values computing module, for the GTG according to the sub-pixel, calculate respectively every in the predeterminable area
The data feature values of multiple GTGs corresponding to individual sub-pixel；
Processing module, if meeting for each data feature values of multiple GTGs corresponding to sub-pixel in the predeterminable area
Second preparatory condition, then the gamma of red sub-pixel in sub-pixel in the predeterminable area is adjusted according to second preparatory condition
Value, it is red after adjustment to cause the gamma value of the red sub-pixel after adjustment more than the gamma value of the red sub-pixel before adjustment
The equivalent GTG of sub-pixels is more than the data feature values of the GTG of green sub-pixels, and the red sub-pixel after adjustment is equivalent
GTG is more than the data feature values of the GTG of blue subpixels.
The embodiment of the present application provides a kind of driving method of display device, including：
Obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area；
According to the GTG of the sub-pixel, multiple GTGs corresponding to each sub-pixel in the predeterminable area are calculated respectively
Data feature values；
If the data feature values of multiple GTGs meet the second preparatory condition corresponding to each sub-pixel in the predeterminable area,
The gamma value of red sub-pixel in sub-pixel in the predeterminable area is then adjusted according to second preparatory condition, to adjust
The gamma value of red sub-pixel afterwards is more than the gamma value of the red sub-pixel before adjustment, red sub-pixel after adjustment it is equivalent
GTG is more than the data feature values of the GTG of green sub-pixels, and the equivalent GTG of the red sub-pixel after adjustment is more than blueness
The data feature values of the GTG of pixel；
Initial gamma value using the gamma value of the red sub-pixel before adjustment as red sub-pixel, red after adjustment
Target gamma value of the gamma value of pixel as red sub-pixel；
Obtain the target gamma of brightness value corresponding to the initial gamma value of the red sub-pixel and the red sub-pixel
Brightness value corresponding to value；
According to brightness value corresponding to the initial gamma value of the red sub-pixel and the target gamma of the red sub-pixel
Brightness value corresponding to value calculates the backlight object brightness for obtaining and red sub-pixel in backlight sub-pixel being corresponded in the predeterminable area
Signal value；
If it is default to meet second for each data feature values of multiple GTGs corresponding to sub-pixel in the predeterminable area
Condition, then the gamma value of red sub-pixel in sub-pixel in the predeterminable area is adjusted according to second preparatory condition to be included：
If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' R=γ R1, and
If gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' R=γ R2, and
If gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' R=γ R3, and
If gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' R=γ R4, and
If gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' R=γ R5, and
The gRRepresent the data feature values of multiple GTGs of red sub-pixel in predeterminable area；The gGRepresent preset areas
The data feature values of multiple GTGs of green sub-pixels, the g in domainBRepresent multiple GTGs of blue subpixels in predeterminable area
Data feature values, γ ' the R represent the gamma value of the red sub-pixel after adjustment,Represent adjustment
After target gamma value, the equivalent GTG of red sub-pixel, i=1,2,3,4,5.
The embodiment of the present application additionally provides a kind of terminal device, including memory, processor and is stored in the storage
In device and the computer program that can run on the processor, this Shen is realized described in the computing device during computer program
Please embodiment first aspect provide methods described the step of.
The embodiment of the present application additionally provides a kind of computer-readable recording medium, the computer-readable recording medium storage
There is computer program, the computer program realizes that the embodiment of the present application first aspect carries when being executed by one or more processors
The step of methods described of confession.
The embodiment of the present application by first obtain each sub-pixel corresponding to pixel cell in predeterminable area (red sub-pixel,
Green sub-pixels, blue subpixels, or, R, G, B) GTG；Due to that can have a sub- picture of red in each pixel cell
The grey decision-making of element, the grey decision-making of green sub-pixels, the grey decision-making of a blue subpixels, according to each pixel list of acquisition
The GTG of the sub-pixel of member calculates the data feature values of multiple grey decision-makings corresponding to each sub-pixel respectively, when each sub-pixel pair
When the data feature values for the multiple grey decision-makings answered meet the second preparatory condition, second preparatory condition refers to colour cast under big visual angle
The value range of three sub- pixel gray levels when phenomenon is serious, then the input gamma signal of the red sub-pixel in sub-pixel is tuned up,
After the gamma value for so tuning up red sub-pixel, brightness ratio of the red sub-pixel under big visual angle is further relative to green son
Pixel, blue subpixels decline, and neutral color is presented in color, and neutral color make it that positive visual angle and big visual angle aberration are improved,
Improve the color offset phenomenon under big visual angle.
Brief description of the drawings
, below will be to embodiment or description of the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the present application
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only some of the application
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the big visual angle of the various representational colour systems of liquid crystal display and faces the inclined change of role；
Fig. 2 is the implementation process schematic diagram of the driving method for the display device that the embodiment of the application one provides；
Fig. 3 is the implementation process schematic diagram of the driving method for the display device that another embodiment of the application provides；
Fig. 4 is visual angle chromatic aberration situation of 60 ° of horizontal view angles under the conditions of red colour system different blended color；
Fig. 5 is the implementation process schematic diagram of the driving method for the display device that another embodiment of the application provides；
Fig. 6 is the implementation process schematic diagram of the driving method for the display device that another embodiment of the application provides；
Fig. 7 is the implementation process schematic diagram of the driving method for the display device that another embodiment of the application provides；
Fig. 8 is CIE LCH color gamut space systems；
Fig. 9 is the implementation process schematic diagram of the driving method for the display device that another embodiment of the application provides；
Figure 10 is the schematic block diagram of the drive device for the display device that the embodiment of the application one provides；
Figure 11 is the schematic block diagram for the terminal device that the embodiment of the application one provides.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, thoroughly to understand the embodiment of the present application.However, it will be clear to one skilled in the art that there is no these specific
The application can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders the description of the present application.
In order to subsequently be easy to describe, we represent red sub-pixel with R, green sub-pixels are represented with G, blue subpixels
Represented with B, the saturation degree in LCH color gamut spaces represents that form and aspect are represented with H with C.
Fig. 1 be the various representational colour systems of liquid crystal display big visual angle and face the inclined change of role, by Fig. 1 we
It was found that color offset phenomenon is more serious than other colour systems under partially red, green, the big visual angle of the colour system of blue color phase, therefore, we can be with
Improve the overall color offset phenomenon under big visual angle by solving the colour cast defect of R, G, B form and aspect in display.
Liquid crystal display panel is made up of multiple pixel cells, and each pixel cell just represents a signal of video signal,
Wherein each pixel cell is made up of three liquid crystal cells lattice again, wherein having red (R), green below each cell respectively
(G), blue (B) filter (or directly using sub-pixel R, G, B as backlight), so passes through the light of different units lattice
Can shows different colours on screen.Three cells in each pixel cell have single drive signal, lead to
The proportioning that single drive signal can adjusts multiple sub-pixels is crossed, so that each pixel cell can show not
Same color.
In order to illustrate technical scheme described herein, illustrated below by specific embodiment.
Fig. 2 is a kind of implementation process schematic diagram of the driving method for display device that the application one embodiment provides, such as
This method may comprise steps of shown in figure：
Step S201, obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area.
In one embodiment, because liquid crystal display panel is made up of many pixel cells, if individually regulation
The colour cast efficiency of each pixel cell can be very low, so liquid crystal display panel first can be divided into multiple subregions by us, often
It is made up of inside individual subregion multiple pixel cells, partition size can voluntarily be set according to actual conditions.For example, display is drawn
It is divided into multiple subregions (L rows, H row), each subregion can be used as a zonule, then display is the equal of small by L × H
Region composition.We choose one of zonule and are located at Nth row m column, the N as predeterminable area, this zonule
Span be：1≤N≤L, the span of the M are：1≤M≤H.If that is, display surface by display
Plate is divided into 5 rows 8 and arranged, then L=5, H=8, then predeterminable area represents that N span is with (N, M)：1≤N≤5, M
Span be：1≤M≤8, N and M represent integer.Assuming that the predeterminable area that we choose is the 3rd row the 6th row, then pre-
Region if (N, M) can is represented with (3,6).Certainly, different expression predeterminable areas can also be developed out according to the above
Mode.If one of subregion can be arranged by i, the pixel cell of j rows forms, then the subregion just has i × j pixel
Unit, we illustrate the method for the embodiment of the present application exemplified by the colour cast in a subregion by adjusting.
The predeterminable area is exactly one of subregion, by multiple pixel cells inside the subregion, while each pixel list
Member is all made up of three sub-pixels (R, G, B), and each sub-pixel can have the chromaticity coordinate in corresponding RGB color domain space, example
Such as, the grey decision-making chromaticity coordinate used in RGB color domain space, the GTG are represented by most secretly to the layer of different brightness most bright
Secondary rank, 256 luminance levels can be shown, can specifically be represented with 0-255 numerical value.We first obtain each pixel cell
In each sub-pixel corresponding to grey decision-making.
Step S202, according to the GTG of the sub-pixel, calculate respectively in the predeterminable area corresponding to each sub-pixel
The data feature values of multiple GTGs.
In one embodiment, in color of each sub-pixel in RGB color domain space in obtaining each pixel cell
After spending coordinate (grey decision-making), we can obtain each sub-pixel (such as sub-pixel corresponding to red color phase) again in each pixel
Grey decision-making in unit, so each sub-pixel just obtain i × j grey decision-making.The data feature values are can be used for characterizing
The value of one group of data, or the value of data analysis feature can be portrayed.In one embodiment, can be made using average value
For the data feature values of one group of data, that is, the average value of multiple GTGs corresponding to each sub-pixel is obtained, average value can be with
Including arithmetic mean number, addend average, geometric mean.It should be noted that data feature values can also include variance or
Person removes arithmetic average after abnormal luma data etc., is not limited herein.
Step S203, if the data feature values of multiple GTGs meet first corresponding to each sub-pixel in the predeterminable area
Preparatory condition, then G gamma value and B gal in sub-pixel are adjusted in the predeterminable area according to first preparatory condition respectively
Horse value, to cause G that the gamma value of the G after adjustment is more than before adjustment gamma value, before the gamma value of the B after adjustment is more than adjustment
B gamma value.
In one embodiment, first preparatory condition refers to that the data feature values of GTG corresponding to each sub-pixel exist
Color offset phenomenon is serious when under the conditions of being somebody's turn to do.So, when color offset phenomenon is serious, we can be by adjusting the parameters of sub-pixel
To improve the color offset phenomenon of liquid crystal display panel under big visual angle.Such as the input gamma signal of regulation sub-pixel, the input gal
Horse signal specifically represents that the gamma value is actually a kind of relation value for exporting and inputting, and can pass through formula with gamma value
Output=inputγ, input represent input signal, output represent output signal, gamma value γ is power exponent, also by
As gamma.Change output signal in the case where not changing input signal by adjusting gamma value can, or not
Change gamma value can in the case of changing input signal and realize equivalent regulation input signal.Popular says, does not change display
The video source data that device receives, the image for the video for being presented to user by adjusting gamma value changes, or makes
The image for obtaining the video that user sees is changed, and these changes show brightness, color etc..
In order to further obtain the parameter of sub-pixel for needing to adjust, R, G, B GTG under more positive visual angle and big visual angle
Relation, so that positive visual angle (0 °) colour mixture GTG is R160, G50, B50 as an example, corresponding positive visual angle RX, GY, BZ and full GTG R255,
G255, B255 ratio are respectively 37%, 3%, 3% colour mixture, and under big visual angle (60 °) RX, GY, BZ and full GTG R255,
G255, B255 ratio are respectively 54%, 23%, 28% colour mixture, it is seen that RX, GY, BZ ratio of positive visual angle colour mixture and big visual angle colour mixture
Example is entirely different, that is to say, that R of the same grey decision-making (input parameter signal) under big visual angle than revealing in positive visual angle following table
Brightness ratio between G, R and B becomes big, and in other words, blue color phase and green hue are compared to red color phase under big visual angle
Ratio can not ignore, the red color phase for causing red color phase under big visual angle to be not so good as under positive visual angle is obvious, so big visual angle
Under there have been color offset phenomenon.It is in practice, different visual angles, different it should be noted that the example is only used for illustrating
Colour mixture condition, the color offset phenomenon finally shown are possible to and different.
Contrasted more than, we can be by adjusting G and B gamma value so that G after regulation G and B gamma value and
B equivalent GTG diminishes, and just compare R GTG of G and B equivalent GTG diminishes under so big visual angle.Red color phase is with regard to energy
It is enough to display again.So that G and B equivalent GTG, which diminishes, just needs the gamma value for tuning up G and B.Due to output=inputγ,
We assume that input signal is exactly grey decision-making, after gamma value changes, the gray scale variation that shows, this GTG phase showed
It is not gray scale variation caused by the change of input signal by this citing to explain equivalent GTG when in equivalent GTG,
And it is due to adjust gamma value so that the output signal showed or the brightness value changes showed.
The embodiment of the present application is by obtaining the data feature values of multiple GTGs corresponding to sub-pixel, if more corresponding to sub-pixel
The color offset phenomenon under big visual angle can be presented in the data feature values of individual GTG, then tunes up G and B gamma value, gamma value tunes up
Afterwards, G and B equivalent GTG will diminish, and the gap of the data feature values of the GTG of G and B equivalent GTG and R will become big,
So R color seems just more bright-coloured, then the color offset phenomenon under big visual angle will be obviously improved.
Fig. 3 is a kind of implementation process schematic diagram of the driving method for display device that another embodiment of the application provides, such as
This method shown in figure can also comprise the following steps after step S203：
Step S301, the initial gamma value using the gamma value of the G before adjustment as G, the gamma value of the G after adjustment is as G
Target gamma value, the initial gamma value using the gamma value of the B before adjustment as B, the mesh of the gamma value of the B after adjustment as B
Mark gamma value.
In one embodiment, after the gamma value for distinguishing the numerical value and adjustment G before adjusting G gamma value for convenience
Numerical value, the initial gamma value using the gamma value of the G before adjustment as G, the target gamma of the gamma value of the G after adjustment as G
Value, the initial gamma value using the gamma value of the B before adjustment as B, the target gamma value of the gamma value of the B after adjustment as B.
Step S302, obtain bright corresponding to brightness value corresponding to the initial gamma value of the G and the G target gamma value
Angle value.
In one embodiment, although the color offset phenomenon under the big visual angle of gamma value by adjusting G and B improves,
But due to adjustment gamma value after brightness also have corresponding influence, so, under positive visual angle G and B brightness change,
G and B color, which just changes, under so positive visual angle knows clearly so that the color combined by sub-pixel R, G, B also there occurs
Change, thus we need obtain G initial gamma value corresponding to brightness value corresponding to brightness value and G target gamma value, look into
See brightness has changed how many, in order to recover the brightness value under positive visual angle, original color will not be caused because of adjustment G gamma value
Performance is affected.
As another embodiment of the application, we can obtain brightness corresponding to G initial gamma value in the following manner
Brightness value corresponding to value and G target gamma value.
Brightness value corresponding to the initial gamma value of the G is obtained by below equation：
Brightness value corresponding to the target gamma value of the G is obtained by below equation：
The LN,MG represents brightness value corresponding to the initial gamma value of the G, the L'N,MG represents the target of the G
Brightness value corresponding to gamma value；The LG (255) represents brightness value when G GTG is 255, gGRepresent each in predeterminable area
The data feature values of the GTG of G in pixel cell；γ G represent G initial gamma value, and γ ' the G represent G target gamma
Value；
In one embodiment, because G target gamma value is more than G initial gamma value, and gGIt is≤255 value, institute
With L'N,MG is relative to LN,MG be actually it is dimmed, that is, G gamma value tune up after, G brightness is dimmed.Need
It is bright, it is only that one kind of brightness value corresponding to brightness value corresponding to G initial gamma value and G target gamma value obtains above
Mode is taken, in actual applications, can also be obtained according to other manner.
Step S303, it is bright according to corresponding to brightness value corresponding to the initial gamma value of the G and the G target gamma value
Angle value calculates the backlight object brightness signal value for obtaining and G in backlight sub-pixel being corresponded in the predeterminable area.
In one embodiment, the presentation of brightness is driven by the luminance signal inputted, and the change of brightness value is also required to
The size for adjusting brightness signal value is realized.So we can according to corresponding to G initial gamma value brightness value and the G
Brightness value corresponding to target gamma value and current backlight illumination signal value obtain backlight object brightness signal value to calculate, the back of the body
Optical target brightness signal value enables to be presented before the luminance recovery that the G under positive visual angle shows to the gamma value for adjusting G
Brightness.
In one embodiment, brightness value corresponding to the initial gamma value according to the G and the G target gamma
Brightness value corresponding to value calculates the backlight object brightness signal value bag for obtaining and G in backlight sub-pixel being corresponded in the predeterminable area
Include：
Pass through formulaCalculate and backlight sub-pixel Green is corresponded in the predeterminable area
The backlight object brightness signal value of sub-pixel；
The A'N,MG represents to correspond to the backlight object brightness signal value of G in backlight sub-pixel, A in predeterminable areaN,MG tables
Show and the current backlight illumination signal values of G in backlight sub-pixel are corresponded in predeterminable area；The LN,MG is represented in the predeterminable area
Brightness value, the L' corresponding to G initial gamma value in sub-pixelN,MG represents the mesh of G in three sub-pixels in the predeterminable area
Brightness value corresponding to gamma value is marked, the N, M represent line number and row of the predeterminable area in multiple regions of division respectively
Number.
If brightness value corresponding to brightness value and G target gamma value corresponding to G initial gamma value is used in step S302
Mode obtain, then G backlight object brightness signal value is obtained by below equation：
Step S304, obtain bright corresponding to brightness value corresponding to the initial gamma value of the B and the B target gamma value
Angle value.
The step is similar with step S302, and it is brightness value corresponding to G initial gamma value that simply step S302, which is obtained,
With the target gamma value of the G corresponding to brightness value, the step be obtain the B initial gamma value corresponding to brightness value and
Brightness value corresponding to the target gamma value of the B.Computational methods are identical, will not be repeated here.
As another embodiment, brightness value and the B target gamma corresponding to the initial gamma value for obtaining the B
Brightness value includes corresponding to value：
Brightness value corresponding to the initial gamma value of the B is obtained by below equation：
Brightness value corresponding to the target gamma value of the B is obtained by below equation：
The LN,MB represents brightness value corresponding to the initial gamma value of the B, the L'N,MB represents the target of the B
Brightness value corresponding to gamma value；The LB (255) represents brightness value when B GTG is 255, gBRepresent each in predeterminable area
The data feature values of the GTG of B in pixel cell；γ B represent B initial gamma value, and γ ' the B represent B target gamma
Value.
Step S305, it is bright according to corresponding to brightness value corresponding to the initial gamma value of the B and the B target gamma value
Angle value calculates the backlight object brightness signal value for obtaining and B in backlight sub-pixel being corresponded in the predeterminable area.
The step is similar with step S303, and what is simply calculated in step S303 is G backlight object brightness signal value,
What the step calculated is B backlight object brightness signal value.It will not be repeated here.
As the another embodiment of the application, brightness value and the B mesh corresponding to the initial gamma value according to the B
Brightness value corresponding to mark gamma value calculates the backlight object brightness signal for obtaining and B in backlight sub-pixel being corresponded in the predeterminable area
Value includes：
Pass through formulaCalculate and blueness in backlight sub-pixel is corresponded in the predeterminable area
The backlight object brightness signal value of sub-pixel；
The A'N,MB represents to correspond to the backlight object brightness signal value of B in backlight sub-pixel, A in predeterminable areaN,MB tables
Show and the current backlight illumination signal values of B in backlight sub-pixel, the L are corresponded in predeterminable areaN,MB is represented in the predeterminable area
Brightness value, the L' corresponding to B initial gamma value in sub-pixelN,MB represents the target of B in sub-pixel in the predeterminable area
Brightness value corresponding to gamma value, the N, M represent line number and columns of the predeterminable area in multiple regions of division respectively.
Similarly, B backlight object brightness signal value is obtained by below equation：
In the embodiment of the present application, because R, G, B have single driving respectively, so three is independent.According to the backlight for calculating G
The process of object brightness signal value, the various parameters for G various parameters being replaced with accordingly B can be obtained by B backlight mesh
Mark brightness signal value.Specifically first still first calculating B backlight object brightness signal value exists calculating G backlight object brightness signal value
This is not limited, and can also calculate G backlight object brightness signal value and B backlight object brightness signal value simultaneously.
Fig. 4 is visual angle chromatic aberration situation of 60 degree of horizontal view angles under the conditions of red colour system different blended color, abscissa be G and
B GTG, ordinate are colour cast, and as described in Figure, when R (red) GTG is 255, G (green), B (blueness) GTG are between 0-
Between 255, as G, B grayscale signal reduce, the colour cast of R form and aspect is more serious.When red GTG is 200, G, B GTG are between 0
~180 GTGs, with writing, G, B grayscale signal are lower, and the colour cast of red color phase is more serious.When red GTG is 160, G, B GTG
Between 0~160 GTG, with writing, G, B grayscale signal are lower, and the colour cast of red color phase is more serious.When red GTG is 100, G, B
GTG is between 0~100 GTG, and with writing, G, B grayscale signal are lower, and the colour cast of red color phase is more serious.
By Fig. 4 we can find out red colour cast it is more serious when, the GTG of sub-pixel respectively where scope, by the model
Enclose as the first preparatory condition, that is to say, that the data feature values of multiple GTGs corresponding to each sub-pixel meet the first default bar
During part, show that color offset phenomenon is than more serious under big visual angle, by Fig. 4 it can also be seen that when R GTG immobilizes, G and B
GTG it is small to a certain extent, at this moment R is relatively more bright-coloured, at the same colour cast it is also relatively small (utilize Fig. 4 in every curve Far Left
Part).So we can be improved under big visual angle by adjusting the gamma value of the G in sub-pixel and B gamma value
Color offset phenomenon.
As the another embodiment of the application, if in the predeterminable area each multiple GTGs corresponding to sub-pixel number
Meet the first preparatory condition according to characteristic value, then three sub-pixels in the predeterminable area are adjusted according to first preparatory condition respectively
Middle G gamma value and B gamma value include：
If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' G=γ G1, γ ' B=γ B1；
If gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' G=γ G2, γ ' B=γ B2；
If gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' G=γ G3, γ ' B=γ B3；
If gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' G=γ G4, γ ' B=γ B4；
If gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' G=γ G5, γ ' B=γ B5；
The gRRepresent the data feature values of R multiple GTGs in predeterminable area；The gGG's is more in expression predeterminable area
The data feature values of individual GTG, the gBThe data feature values of B multiple GTGs in predeterminable area are represented, γ ' the G represent to adjust
The gamma value of G after whole, γ ' the B represent the gamma value of the B after adjustment.For different preparatory conditions, γ ' G and γ ' B's
Value is different, γ G1、γG2... represent different gamma values.
In actual applications, can also be set according to the grey-scale range of sub-pixel when colour cast is serious under big visual angle different pre-
If condition, corresponding different preparatory condition sets different target gamma values, as long as corresponding each target gamma value is not
It is to need to be determined according to the grey decision-making of R, G, B in preparatory condition, certain target gamma value is also more than initial gamma value can
It can be empirical value, after adjusting target gamma value, color offset phenomenon can be improved, set different target gamma values to improve colour cast
The degree of phenomenon is different.
The embodiment of the present application passes through the colour cast situation under more positive visual angle and big visual angle under the conditions of red colour system different blended color
Multiple first preparatory conditions are set, and target gamma value is respectively provided with for each first preparatory condition, due to the described first default bar
Part cover substantially color offset phenomenon it is more serious in the case of sub-pixel grey decision-making scope, as long as so grey decision-making of sub-pixel
Data feature values meet the first preparatory condition, just according to first preparatory condition adjust G and B gamma value can just improve
Color offset phenomenon under big visual angle.
Fig. 5 is a kind of implementation process schematic diagram of the driving method for display device that the application one embodiment provides, should
The difference of embodiment and embodiment illustrated in fig. 2 is：The gamma value for R of embodiment adjustment, embodiment illustrated in fig. 2 adjustment
For G and B gamma value, this method may comprise steps of as shown in the figure：
Step S501, obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area.
Step S502, according to the GTG of the sub-pixel, calculate respectively in the predeterminable area corresponding to each sub-pixel
The data feature values of multiple GTGs.
Step S503, if the data feature values of multiple GTGs meet second corresponding to each sub-pixel in the predeterminable area
Preparatory condition, then the gamma value of R in sub-pixel in the predeterminable area is adjusted according to second preparatory condition, to adjust
The gamma value of R afterwards is more than the gamma value of the R before adjustment, the data characteristics of GTG of the equivalent GTG more than G of the R after adjustment
Value, and the data feature values of GTG of the equivalent GTG of the R after adjustment more than B.
In order to obtain the parameter for needing to adjust from another point of view, we continue to illustrate 60 ° of horizontal view angles in red colour system with Fig. 4
Visual angle chromatic aberration situation under the conditions of different blended color, as shown in figure 4, when the corresponding phase of identical red color phase (red GTG is identical)
With G, B grayscale signal, can be found that aberration (colour cast) is smaller during colour mixture R signal lower (GTG of red color phase), for example, working as
R is 200 grayscale signals, and G, B colour mixture grayscale signal are that the aberration of 100 GTGs is 0.015, when R is 160 grayscale signals, G, B colour mixture
Grayscale signal is that the aberration of 100 GTGs is 0.01, and when R is 100 grayscale signals, G, B colour mixture grayscale signal are the aberration of 100 GTGs
For 0.003.Therefore the embodiment of the present application can be by reducing (reduction grey decision-making) by R grayscale signals so that Red grayscale signals connect
Nearly G, B colour mixture grayscale signal, that is to say, that R grey decision-making is reduced to the grey decision-making close to G, B, by it can be seen from the figure that when R,
G, when B grayscale signal is close (part for utilizing every curve rightmost in Fig. 4), for example, when being all 200, or R is 200,
G, when B is close to 200, color offset phenomenon is very small, because at this moment integral color can be inclined to neutral black-white-gray rank color, thus
The color offset phenomenon under big visual angle can be improved.But R equivalent GTG unconfined can not reduce, R equivalent GTG still will
The data characteristics of GTG more than G, the data feature values of the GTG more than B, because by figure as can be seen that R GTG is necessary
GTG more than G and B could cause the colour cast imagination to improve.So after R gamma value tunes up, R equivalent GTG can diminish, but
It is the data characteristics that the equivalent GTG of the R after adjusting is greater than G GTG, and the equivalent GTG of the R after adjustment is greater than G ash
The data characteristics of rank.
The embodiment of the present application is by obtaining the data feature values of multiple GTGs corresponding to sub-pixel, if more corresponding to sub-pixel
The color offset phenomenon under big visual angle can be presented in the data feature values of individual GTG, then tunes up R gamma value, after gamma value tunes up, R's
Brightness or equivalent GTG will diminish, when R equivalent GTG become with G and B very close to when, also just present the color of partial neutral
Coloured silk, overall color offset phenomenon will improve.
As the another embodiment of the application, if the gamma value for R of adjustment, after step S503, as shown in fig. 6, also
Including：
Step S601, the initial gamma value using the gamma value of the R before adjustment as R, the gamma value of the R after adjustment is as R
Target gamma value.
Step S602, obtain bright corresponding to brightness value corresponding to the initial gamma value of the R and the R target gamma value
Angle value.
Step S603, it is bright according to corresponding to brightness value corresponding to the initial gamma value of the R and the R target gamma value
Angle value calculates the backlight object brightness signal value for obtaining and R in backlight sub-pixel being corresponded in the predeterminable area.
The step is similar with step S301-S303, is simply that G angle describes in step S301-S303, the step
It is R angle description.Content is identical with computational methods, and G simply is changed into R, will not be repeated here.
In one embodiment, although the color offset phenomenon under the big visual angle of gamma value by adjusting R improves,
Due to adjustment gamma value after brightness also have corresponding influence, so, under positive visual angle R brightness change, so just
R color, which just changes, under visual angle is known clearly so that the color combined by R, G, B is also changed, so we need
Brightness value corresponding to obtaining brightness value corresponding to R initial gamma value and R target gamma value, it is more to check that brightness has changed
It is few, in order to recover the brightness value under positive visual angle, because of adjustment R gamma value the performance of original color will not be affected.
It is corresponding that we can obtain brightness value and R target gamma value corresponding to R initial gamma value in the following manner
Brightness value.
Brightness value corresponding to the initial gamma value of the R is obtained by below equation：
Brightness value corresponding to the target gamma value of the R is obtained by below equation：
The LN,MR represents brightness value corresponding to the initial gamma value of the R, the L'N,MR represents the target of the R
Brightness value corresponding to gamma value；The LR (255) represents brightness value when R GTG is 255, gRRepresent each in predeterminable area
The data feature values of the GTG of R in pixel cell；γ R represent R initial gamma value, and γ ' the R represent R target gamma
Value.
In one embodiment, because R target gamma value is more than R initial gamma value, and gRIt is≤255 value, institute
With L'N,MR is relative to LN,MR be actually it is dimmed, that is, R gamma value tune up after, R brightness is dimmed.Need
It is bright, it is only that one kind of brightness value corresponding to brightness value corresponding to R initial gamma value and R target gamma value obtains above
Mode is taken, in actual applications, can also be obtained according to other manner.
In one embodiment, we can according to corresponding to R initial gamma value brightness value and the R target gamma
Brightness value corresponding to value and current brightness signal value obtain backlight object brightness signal value to calculate, backlight object brightness letter
Number value enables to the brightness presented before the luminance recovery that R shows to the gamma value for adjusting R.
Brightness value corresponding to brightness value and the R target gamma value corresponding to the initial gamma value according to the R
Calculate and obtain the backlight object brightness signal value that R in backlight sub-pixel is corresponded in the predeterminable area and be：
Pass through formulaCalculate and red in backlight sub-pixel is corresponded in the predeterminable area
The backlight object brightness signal value of sub-pixel；
The A'N,MR represents to correspond to the backlight object brightness signal value of R in backlight sub-pixel, A in predeterminable areaN,MR tables
Show and the current backlight illumination signal values of R in backlight sub-pixel are corresponded in predeterminable area；The LN,MR is represented in the predeterminable area
Brightness value, the L' corresponding to R initial gamma value in sub-pixelN,MR represents the target of R in sub-pixel in the predeterminable area
Brightness value corresponding to gamma value, the N, M represent line number and columns of the predeterminable area in multiple regions of division respectively.
R backlight object brightness signal value is obtained by below equation：
As the another embodiment of the application, if in the predeterminable area each multiple GTGs corresponding to sub-pixel number
Meet the second preparatory condition according to characteristic value, then according to R in sub-pixel in second preparatory condition adjustment predeterminable area
Gamma value includes：
If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' R=γ R1, and
If gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' R=γ R2, and
If gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' R=γ R3, and
If gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' R=γ R4, and
If gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' R=γ R5, and
The gRRepresent the data feature values of R multiple GTGs in predeterminable area；The gGG's is more in expression predeterminable area
The data feature values of individual GTG, the gBThe data feature values of B multiple GTGs in predeterminable area are represented, γ ' the R represent to adjust
The gamma value of R after whole,After expression is adjusted to target gamma value, R equivalent GTG, i=1,2,3,
4,5。
We by further analysis chart 4 obtain color offset phenomenon it is serious when R, G, B GTG the second preparatory condition.Such as figure
Described, when R (red) GTG is 255, G (green), B (blueness) GTG are between 0-255, as G, B grayscale signal drop
Low, the colour cast of R form and aspect is more serious.When red GTG is 200, G, B GTG are between 0~180 GTG, with work G, B grayscale signal
Lower, the colour cast of red color phase is more serious.When red GTG is 160, G, B GTG are between 0~160 GTG, with work G, B GTG
Signal is lower, and the colour cast of red color phase is more serious.When red GTG is 100, G, B GTG are between 0~100 GTG, with work G, B
Grayscale signal is lower, and the colour cast of red color phase is more serious.
By Fig. 4 we can find out red colour cast it is more serious when, the GTG of sub-pixel respectively where scope, by the model
Enclose as the second preparatory condition, that is to say, that the data feature values of multiple GTGs corresponding to each sub-pixel meet the second default bar
During part, show that color offset phenomenon is than more serious under big visual angle, we change can by adjusting the gamma value of the R in sub-pixel
The color offset phenomenon being apt under big visual angle.
The embodiment of the present application passes through the colour cast situation under more positive visual angle and big visual angle under the conditions of red colour system different blended color
Multiple second preparatory conditions are set, and target gamma value is respectively provided with for each second preparatory condition, due to the described second default bar
Part cover substantially color offset phenomenon it is more serious in the case of sub-pixel grey decision-making scope, as long as so grey decision-making of sub-pixel
Data feature values meet preparatory condition, just according to second preparatory condition adjust R gamma value can just improve big visual angle
Under color offset phenomenon.
Fig. 7 is a kind of implementation process schematic diagram of the driving method for display device that the application one embodiment provides, such as
This method may comprise steps of shown in figure：
Step S701, obtain colourity of the sub-pixel in RGB color domain space corresponding to each pixel cell in predeterminable area
Coordinate.
Step S702, according to chromaticity coordinate of the sub-pixel in RGB color domain space, the predeterminable area is calculated respectively
The data feature values of interior each multiple chromaticity coordinates of the sub-pixel in RGB color domain space.
Step S703, the data feature values of chromaticity coordinate of the sub-pixel in RGB color domain space are converted into LCH colour gamuts sky
Between in chromaticity coordinate.
Step S704, if the C and H in LCH color gamut spaces in chromaticity coordinate meet the 3rd preparatory condition, according to described
Three preparatory conditions adjust in the predeterminable area G gamma value and B gamma value in sub-pixel respectively, to cause the G after adjustment
Gamma value be more than the gamma value of the G before adjustment, the gamma value of the B after adjustment is more than the gamma value of the B before adjustment.
In one embodiment, RGB color domain space is most commonly used in computer graphical, because color monitor makes
Required color is produced with RGB.So the structure and design of system are simplified from RGB color domain space.It is additionally, since RGB
Color gamut space has used many years, it is possible to utilizes most of existing software program module.However, RGB color domain space exists
When handling " reality " image, its efficiency is not very high.Produce the random color in RGB color cube, all R,
G, B must have identical bandwidth.This, which just directly results in each R, G, B, needs pixel depth and display resolution identical
Frame memory.Moreover, piece image is handled in RGB color domain space generally nor most effective way.For example, we
Change brightness or the colourity of pixel, we must read all RGB color values from frame buffer, then calculate
Brightness or colourity, then they are changed accordingly, calculate new rgb value, write back frame buffer.If system accesses
Be the image directly stored with brightness and colourity, some processing steps will be faster.Due to these and other,
Many video standards use brightness and two colour difference signals.So " reality " image is handled for convenience, may in practical application
Can use other color gamut spaces, such as the LCH color gamut spaces that the embodiment of the present application provides, thus we by sub-pixel in RGB color
The data feature values of chromaticity coordinate in domain space are converted to the chromaticity coordinate in LCH color gamut spaces.
Fig. 8 is CIE LCH color gamut space systems, and the chromaticity coordinate in LCH color gamut spaces is represented with L, C, H respectively.L、C、H
Numerical value can be transformed by chromaticity coordinate R, G, B in RGB color domain space, for example, L=f (R, G, B), C=f (R, G,
B), H=f (R, G, B).L represents brightness；H represents form and aspect, that is, color, and span is 0 ° -360 °, defines 0 ° as red,
90 ° are yellow, and 180 ° are green, and 270 ° are blueness；C represents the purity of form and aspect, or saturation degree, that is, the bright-coloured journey of color
Degree, span 0-100,100 represent most brilliant in colors, and in actual applications, C also represent LCD display display height
Press the presentation of signal.
In one embodiment, the 3rd preparatory condition refers to C in LCH color gamut spaces in chromaticity coordinate and H at this
Under the conditions of when color offset phenomenon it is serious.So, when color offset phenomenon is serious, we can be by adjusting RGB sub-pixels in display screen
Parameters improve the color offset phenomenon of liquid crystal display panel under big visual angle.Identical with above-mentioned analysis, we can pass through tune
Save G and B gamma value so that the equivalent GTG of G and B after regulation G and B gamma value diminish, G and B under so big visual angle
Just compare R GTG of equivalent GTG diminishes.Red color phase can just display again.Grey decision-making in RGB color domain space
Change may result in brightness, form and aspect, vividness change in LCH color gamut spaces.
The embodiment of the present application is by obtaining the data feature values of multiple GTGs corresponding to sub-pixel, by RGB color domain space
Grey decision-making be converted into chromaticity coordinate in LCH color gamut spaces so that the applicable occasion of this method is wider, if LCH color gamut spaces
The color offset phenomenon under big visual angle can be presented in middle chromaticity coordinate, then tunes up G and B gamma value, after gamma value tunes up, G and B's
Equivalent GTG will diminish, and the gap of the data feature values of the GTG of G and B equivalent GTG and R will become big, and R color is seen
Get up just more bright-coloured, the color offset phenomenon under so so big visual angle will be obviously improved.
After the gamma value for adjusting G and B, it is possible to according to the method for embodiment illustrated in fig. 3, calculate and obtain the predeterminable area
B backlight object brightness signal value and G backlight object brightness signal value in interior corresponding backlight sub-pixel.
Accordingly, if C and H in LCH color gamut spaces in chromaticity coordinate meet the 3rd preparatory condition, according to the described 3rd
Preparatory condition adjusts in the predeterminable area that G gamma value and B gamma value include in sub-pixel respectively：
If H ∈ (345 °, 360 °], and C ∈ [CTL1, CTH1], then γ ' G=γ G1, γ ' B=γ B1；
If H ∈ (330 °, 345 °], and C ∈ [CTL2, CTH2], then γ ' G=γ G2, γ ' B=γ B2；
If H ∈ (315 °, 330 °], and C ∈ [CTL3, CTH3], then γ ' G=γ G3, γ ' B=γ B3；
If H ∈ (0 °, 15 °], and C ∈ [CTL4, CTH4], then γ ' G=γ G4, γ ' B=γ B4；
If H ∈ (15 °, 30 °], and C ∈ [CTL5, CTH5], then γ ' G=γ G5, γ ' B=γ B5；
If H ∈ (30 °, 45 °], and C ∈ [CTL6, CTH6], then γ ' G=γ G6, γ ' B=γ B6；
The H represents form and aspect of the predeterminable area in LCH color gamut spaces；The C represents predeterminable area in LCH color gamut spaces
In excitation, 0≤CTLiThe ＜ C of ＜ 100,0THi≤ 100, CTHi≥CTLi, i=1,2,3,4,5,6；After γ ' the G represent adjustment
G gamma value, γ ' the B represent the gamma value of the B after adjustment.
In one embodiment, we find out color offset phenomenon it is serious when, C and H in LCH color gamut spaces respectively where model
Enclose, using the scope as the 3rd preparatory condition, that is to say, that C and H value meets the 3rd preparatory condition or in the 3rd default model
When enclosing interior, illustrate that color offset phenomenon is than more serious under big visual angle, we can be by adjusting the gamma value and B of the G in sub-pixel
Gamma value is improving the color offset phenomenon under big visual angle.
In actual applications, different default bars can also be set according to the scope of C and H when colour cast is serious under big visual angle
Part, corresponding different preparatory condition set different target gamma values, as long as corresponding each target gamma value is not to be more than
Initial gamma value can, be need determined according to C in preparatory condition and H value, certainly, target gamma value can also be through
Value is tested, after adjusting target gamma value, color offset phenomenon can be improved, set different target gamma values to improve the journey of color offset phenomenon
Degree is different.The embodiment of the present application is actually that G and B GTG are small to a certain extent, at this moment R phases using when R GTG is fixed
It is more bright-coloured to meeting, while the colour cast imagination is also relatively small.So we can be by tuning up old improvement by G and B gamma value
Color offset phenomenon under big visual angle.
The embodiment of the present application sets multiple 3rd preparatory conditions, Mei Ge according to color offset phenomenon L and C when serious scope
Under three preparatory conditions, corresponding different target gamma value, as long as so H and C meet the 3rd preparatory condition, just according to the described 3rd
Preparatory condition regulation G and B gamma value can just improve the color offset phenomenon under big visual angle.
Fig. 9 is a kind of implementation process schematic diagram of the driving method for display device that the application one embodiment provides, such as
This method may comprise steps of shown in figure：
Step S901, obtain colourity of the sub-pixel in RGB color domain space corresponding to each pixel cell in predeterminable area
Coordinate.
Step S902, according to chromaticity coordinate of the sub-pixel in RGB color domain space, the predeterminable area is calculated respectively
The data feature values of interior each multiple chromaticity coordinates of the sub-pixel in RGB color domain space.
Step S903, the data feature values of chromaticity coordinate of the sub-pixel in RGB color domain space are converted into LCH colour gamuts sky
Between in chromaticity coordinate.
Step S904, if the C and H in LCH color gamut spaces in chromaticity coordinate meet the 4th preparatory condition, according to described
Four preparatory conditions adjust the gamma value of R in sub-pixel in the predeterminable area, to cause the gamma value of the R after adjustment to be more than adjustment
Preceding R gamma value, the data feature values of GTG of the equivalent GTG more than G of the R after adjustment, and the equivalent ash of the R after adjustment
The data feature values of GTG of the rank more than B.
In one embodiment, the 4th preparatory condition refers to C in LCH color gamut spaces in chromaticity coordinate and H at this
Under the conditions of when color offset phenomenon it is serious.So, when color offset phenomenon is serious, we can be by adjusting RGB sub-pixels in display screen
Parameters improve the color offset phenomenon of liquid crystal display panel under big visual angle.
After the gamma value for adjusting R, it is possible to according to the method for embodiment illustrated in fig. 6, calculate and obtain in the predeterminable area
R backlight object brightness signal value in corresponding backlight sub-pixel.
As the another embodiment of the application, if the C and H in LCH color gamut spaces in chromaticity coordinate meet the 4th preparatory condition,
The gamma value of R in sub-pixel in the predeterminable area is then adjusted according to the 4th preparatory condition to be included：
If H ∈ (345 °, 360 °], and C ∈ [CTL1, CTH1], then γ ' R=γ R1, and
If H ∈ (330 °, 345 °], and C ∈ [CTL2, CTH2], then γ ' R=γ R2, and
If H ∈ (315 °, 330 °], and C ∈ [CTL3, CTH3], then γ ' R=γ R3, and
If H ∈ (0 °, 15 °], and C ∈ [CTL4, CTH4], then γ ' R=γ R4, and
If H ∈ (15 °, 30 °], and C ∈ [CTL5, CTH5], then γ ' R=γ R5, and
If H ∈ (30 °, 45 °], and C ∈ [CTL6, CTH6], then γ ' R=γ R6, and
The H represents form and aspect of the predeterminable area in LCH color gamut spaces；The C represents predeterminable area in LCH color gamut spaces
In form and aspect saturation degree, 0≤CTLiThe ＜ C of ＜ 100,0THi≤ 100, CTHi≥CTLi, i=1,2,3,4,5,6；γ ' the R are represented
The gamma value of R after adjustment,R equivalent GTG after expression adjustment R gamma value, i=1,2,3,4,
5。
It should be noted that adjusting the method for colour cast in the embodiment of the present application, a kind of is to tune up G and B gamma value causes G
Smaller while being that the GTG of the Far Left G and B of every curve in Fig. 4 tends to 0 (application) become with B equivalent GTG, it is a kind of
It is to tune up R gamma value (application is that the equivalent GTG of the rightmost R of every curve in Fig. 4 becomes so that R equivalent GTG diminishes
When equal with G and B GTG)；So the applicable elements of two kinds of situations are different, the first preparatory condition and the are thus derived
Two preparatory conditions.Simultaneously as the applicable elements of different color gamut spaces are different, although under LCH color gamut spaces, can also pass through tune
The gamma value for saving G and B or the gamma value for adjusting R realize the effect of regulation colour cast, but applicable elements have respectively become LCH colors
Applicable elements under domain space, thus derive the 3rd preparatory condition and the 4th preparatory condition.It should be noted that can be with
According to the curve given in Fig. 4 in RGB color domain space under derive other applicable elements, adjusted according to different applicable elements
R, G, B gamma value；It is also possible to the transformational relation in other color gamut spaces and RGB color domain space, is derived other
Applicable elements, R, G, B gamma value are adjusted according to different applicable elements.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present application forms any limit with its function and internal logic
It is fixed.
Figure 10 is the schematic block diagram of the drive device for the display device that the embodiment of the application one provides, for convenience of description,
The part related to the embodiment of the present application is only shown.
The drive device 10 of the display device can be the software list being built in terminal device (display, TV etc.)
Member, hardware cell or the unit of soft or hard combination, can also be integrated into the terminal device as independent suspension member.
The drive device 10 of the display device includes：
Acquisition module 101, for obtaining the GTG of each sub-pixel corresponding to pixel cell in predeterminable area；
Data feature values computing module 102, for the GTG according to the sub-pixel, calculate respectively in the predeterminable area
The data feature values of multiple GTGs corresponding to each sub-pixel；
Processing module 103, if the data feature values for each multiple GTGs corresponding to sub-pixel in the predeterminable area
Meet the second preparatory condition, then the gamma value of R in sub-pixel in the predeterminable area is adjusted according to second preparatory condition, with
So that the gamma value of the R after adjustment is more than the gamma value of the R before adjustment, the number of GTG of the equivalent GTG more than G of the R after adjustment
According to characteristic value, and the equivalent GTG of the R after adjustment is more than the data feature values of B GTG.
Optionally, in addition to：
The brightness value acquisition module 104 of red sub-pixel, for the initial gamma using the gamma value of the R before adjustment as R
Value, the target gamma value of the gamma value of the R after adjustment as R, and obtain brightness value corresponding to the initial gamma value of the R and institute
State brightness value corresponding to R target gamma value；
The backlight object brightness signal value determining module 105 of red sub-pixel, for the initial gamma value pair according to the R
Brightness value corresponding to the brightness value and the target gamma value of the R answered, which calculates to obtain in the predeterminable area, corresponds to backlight sub-pixel
Middle R backlight object brightness signal value.
Optionally, the backlight object brightness signal value determining module 105 of red sub-pixel is used for：
Pass through formulaCalculate and red in backlight sub-pixel is corresponded in the predeterminable area
The backlight object brightness signal value of sub-pixel；
The A'N,MR represents to correspond to the backlight object brightness signal value of R in backlight sub-pixel, A in predeterminable areaN,MR tables
Show and the current backlight illumination signal values of R in backlight sub-pixel are corresponded in predeterminable area；The LN,MR is represented in the predeterminable area
Brightness value, the L' corresponding to R initial gamma value in sub-pixelN,MR represents the target of R in sub-pixel in the predeterminable area
Brightness value corresponding to gamma value, the N, M represent line number and columns of the predeterminable area in multiple regions of division respectively.
Optionally, the brightness value acquisition module 104 of the red sub-pixel includes：
The initial luma values acquiring unit 1041 of red sub-pixel, for obtaining the initial gal of the R by below equation
Brightness value corresponding to horse value：
The target brightness value acquiring unit 1042 of red sub-pixel, for obtaining the target gal of the R by below equation
Brightness value corresponding to horse value：
The LN,MR represents brightness value corresponding to the initial gamma value of the R, the L'N,MR represents the target of the R
Brightness value corresponding to gamma value；The LR (255) represents brightness value when R GTG is 255, gRRepresent each in predeterminable area
The data feature values of the GTG of R in pixel cell；γ R represent R initial gamma value, and γ ' the R represent R target gamma
Value.
Optionally, the processing module 103 is used for：
If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' R=γ R1, and
If gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' R=γ R2, and
If gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' R=γ R3, and
If gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' R=γ R4, and
If gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' R=γ R5, and
The gRRepresent the data feature values of R multiple GTGs in predeterminable area；The gGG's is more in expression predeterminable area
The data feature values of individual GTG, the gBThe data feature values of B multiple GTGs in predeterminable area are represented, γ ' the R represent to adjust
The gamma value of R after whole,After expression is adjusted to target gamma value, R equivalent GTG, i=1,2,3,
4,5。
Optionally, the data feature values include：Arithmetic mean number, addend average, geometric mean, variance.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can module, unit division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional module or unit are completed, will the display device drive device internal structure be divided into different functional modules or
Unit, to complete all or part of function described above.
Figure 11 is the schematic block diagram for the terminal device that the embodiment of the application one provides.As shown in figure 11, the end of the embodiment
End equipment 11 includes：One or more processors 110, memory 111 and it is stored in the memory 111 and can be described
The computer program 112 run on processor 110.The processor 110 is realized above-mentioned each when performing the computer program 112
Step in the driving method embodiment of individual display device, such as the step S501 to S503 shown in Fig. 5.Or the processing
Device 110 realizes the function of each module in the drive device embodiment of above-mentioned display device, example when performing the computer program 112
The function of module 101 to 103 as shown in Figure 10.If terminal device is display, it should also include display panel.
Exemplary, the computer program 112 can be divided into one or more module/units, it is one or
Multiple module/the units of person are stored in the memory 111, and are performed by the processor 110, to complete the application.Institute
It can be the series of computation machine programmed instruction section that can complete specific function to state one or more module/units, the instruction segment
For describing implementation procedure of the computer program 112 in the terminal device 11.For example, the computer program 112
Acquisition module, data feature values computing module, processing module can be divided into.
The acquisition module, for obtaining the GTG of each sub-pixel corresponding to pixel cell in predeterminable area；
The data feature values computing module, for the GTG according to the sub-pixel, the predeterminable area is calculated respectively
The data feature values of multiple GTGs corresponding to interior each sub-pixel；
The processing module, if the data feature values for each multiple GTGs corresponding to sub-pixel in the predeterminable area
Meet the second preparatory condition, then according to red sub-pixel in sub-pixel in second preparatory condition adjustment predeterminable area
Gamma value, with cause adjustment after red sub-pixel gamma value be more than adjustment before red sub-pixel gamma value, after adjustment
Red sub-pixel equivalent GTG be more than green sub-pixels GTG data feature values, and the red sub-pixel after adjusting
Equivalent GTG is more than the data feature values of the GTG of blue subpixels.
Other modules or unit can refer to the description of each module or unit in the drive device of display device, herein no longer
Repeat.
The terminal device includes but are not limited to processor 110, memory 111.It will be understood by those skilled in the art that
Figure 11 is only the example of terminal device 11, does not form the restriction to terminal device 11, can be included more more or more than illustrating
Few part, either combines some parts or different parts, for example, the terminal device can also include input equipment,
Output equipment, network access equipment, bus etc..
The memory 111 can be the internal storage unit of the terminal device 11, such as the hard disk of terminal device 11
Or internal memory.The memory 111 can also be the External memory equipment of the terminal device 11, such as on the terminal device 11
The plug-in type hard disk of outfit, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD)
Card, flash card (Flash Card) etc..Further, the memory 111 can also be both interior including the terminal device 11
Portion's memory cell also includes External memory equipment.The memory 111 is used to store the computer program and the terminal
Other programs and data needed for equipment.The memory 111, which can be also used for temporarily storing, have been exported or will be defeated
The data gone out.
Embodiment described above is only to illustrate the technical scheme of the application, rather than its limitations；Although with reference to foregoing reality
Example is applied the application is described in detail, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application, all should
Within the protection domain of the application.
Claims (10)
- A kind of 1. driving method of display device, it is characterised in that including：Obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area；According to the GTG of the sub-pixel, the data of multiple GTGs corresponding to each sub-pixel in the predeterminable area are calculated respectively Characteristic value；If the data feature values of multiple GTGs meet the second preparatory condition, root corresponding to each sub-pixel in the predeterminable area The gamma value of red sub-pixel in sub-pixel in the predeterminable area is adjusted according to second preparatory condition, after causing adjustment The gamma value of red sub-pixel is more than the gamma value of the red sub-pixel before adjustment, the equivalent GTG of the red sub-pixel after adjustment Equivalent GTG more than the data feature values of the GTG of green sub-pixels, and the red sub-pixel after adjustment is more than blue subpixels GTG data feature values.
- 2. the driving method of display device as claimed in claim 1, it is characterised in that described according to second preparatory condition Adjust in the predeterminable area in sub-pixel after the gamma value of red sub-pixel, including：Initial gamma value using the gamma value of the red sub-pixel before adjustment as red sub-pixel, the red sub-pixel after adjustment Target gamma value of the gamma value as red sub-pixel；Obtain brightness value corresponding to the initial gamma value of the red sub-pixel and the target gamma value pair of the red sub-pixel The brightness value answered；According to brightness value corresponding to the initial gamma value of the red sub-pixel and the target gamma value pair of the red sub-pixel The brightness value answered calculates the backlight object brightness signal for obtaining and red sub-pixel in backlight sub-pixel being corresponded in the predeterminable area Value.
- 3. the driving method of display device as claimed in claim 2, it is characterised in that described according to the red sub-pixel It is described pre- that brightness value corresponding to brightness value corresponding to initial gamma value and the target gamma value of the red sub-pixel calculates acquisition Include if corresponding to the backlight object brightness signal value of red sub-pixel in backlight sub-pixel in region：Pass through formulaCalculate and red sub-pixel in backlight sub-pixel is corresponded in the predeterminable area Backlight object brightness signal value；The A'N,MR represents to correspond to the backlight object brightness signal value of red sub-pixel in backlight sub-pixel, A in predeterminable areaN, MR represents to correspond to the current backlight illumination signal value of red sub-pixel in backlight sub-pixel in predeterminable area；The LN,MR represents institute State brightness value corresponding to the initial gamma value of red sub-pixel in sub-pixel in predeterminable area, the L'N,MR represents described default Brightness value, the N, M represent the predeterminable area respectively corresponding to the target gamma value of red sub-pixel in sub-pixel in region Line number and columns in multiple regions of division.
- 4. the driving method of display device as claimed in claim 3, it is characterised in that the acquisition red sub-pixel Brightness value corresponding to brightness value corresponding to initial gamma value and the target gamma value of the red sub-pixel includes：Brightness value corresponding to the initial gamma value of the red sub-pixel is obtained by below equation：Brightness value corresponding to the target gamma value of the red sub-pixel is obtained by below equation：The LN,MR represents brightness value corresponding to the initial gamma value of the red sub-pixel, the L'N,MR represents the red Brightness value corresponding to the target gamma value of sub-pixel；The LR (255) represents the brightness when GTG of red sub-pixel is 255 Value, gRRepresent the data feature values of the GTG of the red sub-pixel in predeterminable area in each pixel cell；γ R represent red son The initial gamma value of pixel, γ ' the R represent the target gamma value of red sub-pixel.
- 5. the driving method of display device as claimed in claim 1, it is characterised in that if each in the predeterminable area The data feature values of multiple GTGs meet the second preparatory condition corresponding to sub-pixel, then adjust institute according to second preparatory condition Stating the gamma value of red sub-pixel in sub-pixel in predeterminable area includes：If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' R=γ R1, andIf gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' R=γ R2, andIf gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' R=γ R3, andIf gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' R=γ R4, andIf gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' R=γ R5, andThe gRRepresent the data feature values of multiple GTGs of red sub-pixel in predeterminable area；The gGRepresent in predeterminable area The data feature values of multiple GTGs of green sub-pixels, the gBRepresent the number of multiple GTGs of blue subpixels in predeterminable area According to characteristic value, γ ' the R represent the gamma value of the red sub-pixel after adjustment,Expression is adjusted to mesh After marking gamma value, the equivalent GTG of red sub-pixel, i=1,2,3,4,5.
- 6. the driving method of the display device as described in any one of claim 1 to 5, it is characterised in that the data feature values Including：Arithmetic mean number, addend average, geometric mean, variance.
- A kind of 7. drive device of display device, it is characterised in that including：Acquisition module, for obtaining the GTG of each sub-pixel corresponding to pixel cell in predeterminable area；Data feature values computing module, for the GTG according to the sub-pixel, calculate respectively in the predeterminable area per height The data feature values of multiple GTGs corresponding to pixel；Processing module, if meeting second for each data feature values of multiple GTGs corresponding to sub-pixel in the predeterminable area Preparatory condition, then the gamma value of red sub-pixel in sub-pixel in the predeterminable area is adjusted according to second preparatory condition, To cause the gamma value of the red sub-pixel after adjustment more than the gamma value of the red sub-pixel before adjustment, red after adjustment The equivalent GTG of pixel is more than the data feature values of the GTG of green sub-pixels, and the equivalent GTG of the red sub-pixel after adjustment More than the data feature values of the GTG of blue subpixels.
- 8. the drive device of display device as claimed in claim 7, it is characterised in that also include：The brightness value acquisition module of red sub-pixel, for using the gamma value of the red sub-pixel before adjustment as red sub-pixel Initial gamma value, the target gamma value of the gamma value of the red sub-pixel after adjustment as red sub-pixel, and described in obtaining Brightness value corresponding to brightness value corresponding to the initial gamma value of red sub-pixel and the target gamma value of the red sub-pixel；The backlight object brightness signal value determining module of red sub-pixel, for the initial gamma value according to the red sub-pixel Brightness value corresponding to corresponding brightness value and the target gamma value of the red sub-pixel calculates right in the acquisition predeterminable area Answer the backlight object brightness signal value of red sub-pixel in backlight sub-pixel.
- 9. the drive device of display device as claimed in claim 8, it is characterised in that the backlight target of the red sub-pixel Brightness signal value determining module is used for：Pass through formulaCalculate and red sub-pixel in backlight sub-pixel is corresponded in the predeterminable area Backlight object brightness signal value；The A'N,MR represents to correspond to the backlight object brightness signal value of red sub-pixel in backlight sub-pixel, A in predeterminable areaN, MR represents to correspond to the current backlight illumination signal value of red sub-pixel in backlight sub-pixel in predeterminable area；The LN,MR represents institute State brightness value corresponding to the initial gamma value of red sub-pixel in sub-pixel in predeterminable area, the L'N,MR represents described default Brightness value, the N, M represent the predeterminable area respectively corresponding to the target gamma value of red sub-pixel in sub-pixel in region Line number and columns in multiple regions of division.
- A kind of 10. driving method of display device, it is characterised in that including：Obtain the GTG of sub-pixel corresponding to each pixel cell in predeterminable area；According to the GTG of the sub-pixel, the data of multiple GTGs corresponding to each sub-pixel in the predeterminable area are calculated respectively Characteristic value；If the data feature values of multiple GTGs meet the second preparatory condition, root corresponding to each sub-pixel in the predeterminable area The gamma value of red sub-pixel in sub-pixel in the predeterminable area is adjusted according to second preparatory condition, after causing adjustment The gamma value of red sub-pixel is more than the gamma value of the red sub-pixel before adjustment, the equivalent GTG of the red sub-pixel after adjustment Equivalent GTG more than the data feature values of the GTG of green sub-pixels, and the red sub-pixel after adjustment is more than blue subpixels GTG data feature values；Initial gamma value using the gamma value of the red sub-pixel before adjustment as red sub-pixel, the red sub-pixel after adjustment Target gamma value of the gamma value as red sub-pixel；Obtain brightness value corresponding to the initial gamma value of the red sub-pixel and the target gamma value pair of the red sub-pixel The brightness value answered；According to brightness value corresponding to the initial gamma value of the red sub-pixel and the target gamma value pair of the red sub-pixel The brightness value answered calculates the backlight object brightness signal for obtaining and red sub-pixel in backlight sub-pixel being corresponded in the predeterminable area Value；If each data feature values of multiple GTGs corresponding to sub-pixel meet the second preparatory condition in the predeterminable area, The gamma value of red sub-pixel in sub-pixel in the predeterminable area is then adjusted according to second preparatory condition to be included：If gR∈ (200,255], and gG∈ [0,200], and gB∈ [0,200], then γ ' R=γ R1, andIf gR∈ (150,200], and gG∈ [0,180], and gB∈ [0,180], then γ ' R=γ R2, andIf gR∈ (100,150], and gG∈ [0,150], and gB∈ [0,150], then γ ' R=γ R3, andIf gR∈ (50,100], and gG∈ [0,100], and gB∈ [0,100], then γ ' R=γ R4, andIf gR∈ [0,50], and gG∈ [0,50], and gB∈ [0,50], then γ ' R=γ R5, andThe gRRepresent the data feature values of multiple GTGs of red sub-pixel in predeterminable area；The gGRepresent in predeterminable area The data feature values of multiple GTGs of green sub-pixels, the gBRepresent the number of multiple GTGs of blue subpixels in predeterminable area According to characteristic value, γ ' the R represent the gamma value of the red sub-pixel after adjustment,Expression is adjusted to mesh After marking gamma value, the equivalent GTG of red sub-pixel, i=1,2,3,4,5.
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| PCT/CN2018/096027 WO2019119792A1 (en) | 2017-12-20 | 2018-07-17 | Driving method and device for display device |
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| WO2019119792A1 (en) | 2019-06-27 |
| CN107863084B (en) | 2019-12-13 |
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