CN108399901A - Liquid crystal display color calibration method and device and electronic equipment - Google Patents
Liquid crystal display color calibration method and device and electronic equipment Download PDFInfo
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- CN108399901A CN108399901A CN201810168130.4A CN201810168130A CN108399901A CN 108399901 A CN108399901 A CN 108399901A CN 201810168130 A CN201810168130 A CN 201810168130A CN 108399901 A CN108399901 A CN 108399901A
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
Abstract
The embodiment of the invention discloses a kind of liquid crystal display color calibration method and device and electronic equipment, this method includes：Obtain the actual color value of each three-primary-color image shown by liquid crystal display；According to the actual color value and original color value of each three-primary-color image, the color correction coefficient of the liquid crystal display is determined；Based on the color correction coefficient, the driving voltage of the liquid crystal display is corrected, and then solves the colour cast problem of liquid crystal display colour graph card, improves the display effect of liquid crystal display.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of liquid crystal display color calibration methods and dress
It sets and electronic equipment.
Background technology
Display performance is the important parameter of evaluation liquid crystal display (Liquid Crystal Display, LCD) quality, but
It is that, since the framework of display panel, processing procedure defect, fault in material and process water equality factor influence, display panel is in difference
It will appear display colour cast in degree, seriously affected the quality of product.For example, due to pure colored (R, G, the B) of liquid crystal display
It is red partially orange caused by the colour cast of graph card, it is yellow partially green etc..
At present in industry, most of producer mainly executes grey field color correction, for example, PC hosts are passed through DEBUG respectively
(eliminating failure) debugging board and TCON (Timer Control Register, timer) burning plates and TV set core and liquid crystal display
TCON plates are attached.NCSTOOL (Natural Color System Tool, image quality debugging acid) is executed on PC, is established
And the communication connection of PC and TV set core is kept, it is effective that RDITHER_EN (shake pin) is arranged in NCSTOOL dialog boxes.
TCON CODE (coding) debugging acid is executed on PC, the communication connection of PC and liquid crystal display TCON plates is established and keep, in TCON
R, G, B value of 1 to 5 grayscale are adjusted in CODE Debugging interfaces, the ratio range of R, G, B is made to be maintained at 0.9：1：0.85 to
1:1:Between 0.9.
It can be seen from the above, the prior art only improves grey brightness and colour cast problem off field, and to the pure coloured silk of liquid crystal display
The colour cast problem of chromatic graph card does not have effective solution scheme.
Invention content
A kind of liquid crystal display of offer of the embodiment of the present invention and its color calibration method and device and electronic equipment, with solution
Certainly the problem of the colour cast of the pure colored graph card of liquid crystal display.
In a first aspect, the embodiment of the present invention provides a kind of color calibration method of liquid crystal display, including：
Obtain the actual color value of each three-primary-color image shown by liquid crystal display；
According to the actual color value and original color value of each three-primary-color image, the color of the liquid crystal display is determined
Correction coefficient；
Based on the color correction coefficient, the driving voltage of the liquid crystal display is corrected.
Second aspect, the embodiment of the present invention provide a kind of color correction device of liquid crystal display, including：
Acquisition module, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Determining module determines the liquid for the actual color value and original color value according to each three-primary-color image
The color correction coefficient of crystal display screen；
Correction module is corrected the driving voltage of the liquid crystal display for being based on the color correction coefficient.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, including：
Obtain equipment, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Memory, for storing computer program；
Processor, for executing the computer program, to realize the color school of the liquid crystal display described in first aspect
Correction method.
Fourth aspect, the embodiment of the present invention provide a kind of computer storage media, computer are stored in the storage medium
Program, the computer program realize the color calibration method of the liquid crystal display described in above-mentioned first aspect when being executed.
The embodiment of the present invention has the beneficial effect that：
By obtaining the actual color value of each three-primary-color image shown by liquid crystal display, according to each three-primary-color image
Actual color value and original color value determine the color correction coefficient of liquid crystal display, the color correction coefficient are based on, to liquid crystal
The driving voltage of display screen is corrected, and then solves the colour cast problem of liquid crystal display colour graph card, improves liquid crystal
The display effect of display screen.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart for the liquid crystal display color calibration method that the embodiment of the present invention one provides；
Fig. 2 is the color corrected system schematic diagram of the liquid crystal display involved by the present embodiment；
Fig. 3 is the flow chart of liquid crystal display color calibration method provided by Embodiment 2 of the present invention；
Fig. 4 a are a kind of schematic diagram of practical colour triangle and original color gamut triangle in the present embodiment two；
Fig. 4 b are another schematic diagram of practical colour triangle and original color gamut triangle in the present embodiment two；
Fig. 5 is the correspondence figure of chromatic value and chromaticity diagram；
Fig. 6 is the structural schematic diagram for the liquid crystal display color correction device that the embodiment of the present invention one provides
Fig. 7 is the structural schematic diagram of liquid crystal display color correction device provided by Embodiment 2 of the present invention；
Fig. 8 is the structural schematic diagram for the liquid crystal display color correction device that the embodiment of the present invention three provides；
Fig. 9 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The operation principle of liquid crystal display：LCD is made of two pieces of glass plates, includes liquid crystal material therebetween.Because of liquid crystal material
Material itself does not shine, so being designed with the fluorescent tube as light source on display screen both sides, and is equipped with the back of the body at the liquid crystal display back side
Tabula rasa (or uniform light board) and reflective membrane.Backlight is made of fluorescent material, can emit light, and effect is mainly to provide
Uniform background light source.The light that backlight is sent out after first layer polarization filter layer enter include thousands of liquid crystal
The liquid crystal layer of drop.Drop in liquid crystal layer is contained in tiny cell structure, and one or more cells are constituted
A pixel on screen.It is transparent electrode between glass plate and liquid crystal material, electrode is divided into row and column, in row and column
On crosspoint, change the optically-active state of liquid crystal by changing voltage, the effect of liquid crystal material is similar to light valve small one by one.
It is control circuit part and driving circuit section on liquid crystal material periphery.When the electrode in LCD generates electric field, liquid crystal molecule is just
Distortion is will produce, well-regulated refraction is carried out to will be travelling through light therein, then passes through the filtering of second layer filter layer and is shielding
It is shown on curtain.
By the displaying principle of above-mentioned liquid crystal display it is found that the display color of liquid crystal display and being applied on liquid crystal molecule
Driving voltage it is related, and the size of the driving voltage is determined by LCD Source Driver (source driving).Wherein,
LCD Source Driver are used to digital image data being converted into analog drive voltage.
The prior art carries out color correction by the grayscale to liquid crystal display, but does not account for the colour cast of colored graph card
Problem, so that color correction is inaccurate.
Liquid crystal display color calibration method provided in an embodiment of the present invention measures each three original shown by liquid crystal display
The original color value of the actual color value of measurement and each three-primary-color image is compared by the actual color value of color image, is determined
The color correction coefficient of liquid crystal display, and it is based on the color correction coefficient, the driving voltage of liquid crystal display is corrected.
That is the method for the present embodiment, it is contemplated that the colour cast problem of liquid crystal display colour graph card, and then improve liquid crystal display screen color
Calibration accuracy, improve the display effect of liquid crystal display.
Technical scheme of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and same or analogous concept or process may be repeated no more in some embodiments.
Fig. 1 is the flow chart for the liquid crystal display color calibration method that the embodiment of the present invention one provides.Should as shown in Figure 1,
The method of the present embodiment may include：
The actual color value of each three-primary-color image shown by S101, the acquisition liquid crystal display.
The executive agent of the present embodiment is the color correction device (hereinafter referred to as color correction device) of liquid crystal display, should
Color correction device can be individual equipment, can also be integrated in other electronic equipments, for example, be integrated into smart mobile phone,
Tester, computer are medium.Optionally, which can also integrate liquid crystal display to be corrected in the present embodiment
In screen.
The color correction device of the present embodiment is connect with other measuring apparatus, and measuring apparatus can accurately measure liquid crystal
The color value of each three-primary-color image shown by display screen, color correction device obtain liquid crystal display from the measuring apparatus and show
The color value of each three-primary-color image shown.Meanwhile the color correction device of the present embodiment also has data-handling capacity.
The method of the present embodiment can carry out before liquid crystal display manufacture, ensure the aobvious of each liquid crystal display of manufacture
Show that effect meets preset requirement.Alternatively, the method for the present embodiment can carry out during the normal use of liquid crystal display, example
Such as when user has found liquid crystal display colour cast, the color correction device of the present embodiment can be used to execute the side of the present embodiment
Method.
The three-primary-color image of the present embodiment is the colored graph card of LCD, as red, green and blue solid-color images, respectively
R, G, B value of solid-color image are as shown in table 1：
Table 1
| Color | R | G | B |
| Red is red | 255 | 0 | 0 |
| Green greens | 0 | 255 | 0 |
| Blue blues | 0 | 0 | 255 |
Fig. 2 is the color corrected system schematic diagram of the liquid crystal display involved by the present embodiment.As shown in Fig. 2, this implementation
The color corrected system of example includes liquid crystal display, signal driving source, power supply, supporting rack, measuring apparatus and color to be measured
Means for correcting.Wherein liquid crystal display is fixed on supporting rack, and power supply is used to power for liquid crystal display, signal driving source and liquid
Crystal display screen connects, and for inputting each three-primary-color image to liquid crystal display, measuring apparatus is located at the front of liquid crystal display,
Actual color value for measuring each three-primary-color image shown on liquid crystal display, color correction device are set with measurement respectively
It is standby to be connected with liquid crystal display.
It should be noted that Fig. 2 is as an example, shown color correction device and liquid crystal display specific installation can
Choosing, color correction device can also be integrated in liquid crystal display.
When each solid-color image shown in the liquid crystal display of the present embodiment shows table 1 respectively, then the signal driving in Fig. 2
Source can drive liquid crystal display to show corresponding three-primary-color image, such as root according to R, G, B value of each solid-color image in table 1
According to the first row (255,0,0), driving liquid crystal display is displayed in red image, according to the first row (0,255,0), drives liquid crystal display
Screen shows green image, and according to the first row (0,0,255), driving liquid crystal display is displayed in blue image.
Optionally, the liquid crystal display of the present embodiment can also show each three-primary-color image in the same display picture,
For example, the left-half in display picture shows R (Red, red) primary colors, G (Green, green) primary colors is shown in middle section,
B (Blue, blue) primary colors is shown in right half part.
Then, measuring apparatus measures the color value of each three-primary-color image shown by liquid crystal display, obtains it
Actual color value.
Optionally, the measuring apparatus of the present embodiment can be optical measuring instrument, can accurately measure each three-primary-color image
Actual color value.
As shown in Fig. 2, the actual color value of each three-primary-color image measured by measuring apparatus, may include chromatic value and/
Or brightness value.
Wherein, chromatic value may include at least one of R chromatic values, G chromatic values, B chromatic values.Similarly, brightness value can
To include at least one of R brightness values, G brightness values, B brightness values.
The actual color value of above-mentioned each three-primary-color image is the color value of any pixel on each three-primary-color image, for example,
The color value of the central point of each three-primary-color image.
For example, measuring the red image shown by liquid crystal display, R chromatic values and R brightness values are obtained, measures liquid crystal display
The shown green image of screen, obtains G chromatic values and G brightness values, measures the blue image shown by liquid crystal display, obtains B
Chromatic value and B brightness values.
In order to improve measurement accuracy, then the measurement process of the present embodiment carries out in darkroom, avoids the dry of ambient light
It disturbs, and then improves the accuracy of measurement.
Finally, color correction device obtains the reality of each three-primary-color image shown by liquid crystal display from measuring apparatus
Color value.
S102, actual color value and original color value according to each three-primary-color image, determine the liquid crystal display
Color correction coefficient.
Specifically, the color correction device of the present embodiment also pre-saves the original color value of each three-primary-color image, example
Such as, R, G, B value of each three-primary-color image described in table 1 are saved.It, will be real after the actual color value for obtaining each three-primary-color image
Border color value is compared with original color value, to determine the calibration factor of liquid crystal display.
It should be noted that actual color value described above and original color value are the face of same point on three-primary-color image
Color value.For example, when Fig. 2 measure be the actual color value of central point of three-primary-color image when, then color correction device is from advance
The original color value of each pixel of the three-primary-color image of preservation, obtains the original color value of central point.
In a kind of example, the present embodiment can be by the actual color value of each three-primary-color image and the ratio of original color value
Color correction coefficient as liquid crystal display.For example, the actual color value A1 and original color value A0 of each three-primary-color image it
Between ratio be k=A1/A0, at this point it is possible to using k=A1/A0 as the color correction coefficient of liquid crystal display.
In another example, when the chromatic value that the color value of the present embodiment includes three primary colors (i.e. R, G, B) includes again
It, then can be according to the corresponding pass between trichromatic practical chromatic value and trichromatic original chrominance when trichromatic brightness value
System and the correspondence between trichromatic intrinsic brilliance value and trichromatic original luminance value, determine liquid crystal display
Color correction coefficient.
In another example, above-mentioned S102 is also possible that obtains the corresponding colour triangle of each actual color value first
The a and corresponding colour triangle b of each original color value, and obtain the superimposed triangular of triangle a and triangle b.Then,
According to the correspondence between the trichromatic practical chromatic value of measurement and the chromatic value on each vertex of superimposed triangular, Yi Jisan
Correspondence between the real brightness value of primary colors and the brightness value on each vertex of superimposed triangular, determines the color of liquid crystal display
Correction coefficient.Its specific process can refer to the description of following embodiments, and details are not described herein.
Optionally, the present embodiment can also by means of other modes, using each three-primary-color image actual color value and
Original color value determines that the color correction coefficient of liquid crystal display, the present embodiment are without limitation.
Optionally, the color correction coefficient of the present embodiment may include in R correction coefficient, G correction coefficient and B correction coefficient
At least one.
Optionally, after the color correction coefficient that liquid crystal display is determined according to above-mentioned steps, liquid crystal display is preserved
Color correction coefficient is corrected the driving voltage of liquid crystal display when liquid crystal display is shown.
S103, it is based on the color correction coefficient, the driving voltage of the liquid crystal display is corrected.
Specifically, by the displaying principle of above-mentioned liquid crystal display it is found that the color of each pixel is by liquid crystal on liquid crystal display
The rotation angle of molecule determines, and the rotation angle of liquid crystal molecule is determined by the driving voltage for applying on it.
Therefore, after color correction coefficient of the present embodiment according to above-mentioned steps acquisition liquid crystal display, the color school is used
Positive coefficient carrys out the driving voltage of correcting liquid crystal display screen.
For example, the color correction coefficient for the liquid crystal display that above-mentioned steps obtain includes R correction coefficient, G correction coefficient and B
Correction coefficient can be corrected the driving voltage of R sub-pixels in liquid crystal display using R correction coefficient, use the schools G in this way
Positive coefficient is corrected the driving voltage of G sub-pixel in liquid crystal display, using B correction coefficient to B in liquid crystal display
The driving voltage of pixel is corrected.
The color correction device of the present embodiment and the drive module of liquid crystal display connect, and color correction device is based on above-mentioned
The color correction coefficient of acquisition, is corrected the driving voltage of liquid crystal display, and the driving voltage after correction is input to
The drive module of liquid crystal display, so that the drive module of liquid crystal display drives liquid crystal display according to the driving voltage after correction
Screen.
By the above method, the driving voltage of liquid crystal display can be corrected, solve liquid crystal display colour
The colour cast problem of graph card, and then the display effect of liquid crystal display is improved, improve user experience.
The color calibration method of liquid crystal display provided in an embodiment of the present invention, by measuring shown by liquid crystal display
The actual color value of each three-primary-color image determines liquid crystal according to the actual color value and original color value of each three-primary-color image
The color correction coefficient of display screen is based on the color correction coefficient, is corrected to the driving voltage of liquid crystal display, and then solves
The colour cast problem of liquid crystal display colour graph card, improves the display effect of liquid crystal display.
Fig. 3 is the flow chart of liquid crystal display color calibration method provided by Embodiment 2 of the present invention, and Fig. 4 a are this implementation
A kind of schematic diagram of practical colour triangle and original color gamut triangle in example two, Fig. 4 b are practical colour gamut three in the present embodiment two
The angular another schematic diagram with original color gamut triangle.On the basis of the above embodiments, the present embodiment refers to basis
The actual color value and original color value of each three-primary-color image, determine the tool of the color correction coefficient of the liquid crystal display
Body process.As shown in figure 3, above-mentioned S102 can specifically include：
S201, the practical colour triangle that the actual color value of each three-primary-color image is collectively formed is determined, and each
The original color gamut triangle that the original color value of the three-primary-color image is collectively formed.
S202, determine that the practical colour triangle and the original color gamut triangle are public in target color gamut region
Section, using the color value of the vertex correspondence of the public region as with reference to color value.
Wherein, the target color gamut includes at least one of R gamut regions, G gamut regions and B gamut regions.
Specifically, the actual color value of each three-primary-color image obtained in above-mentioned steps S101 includes chromatic value, that is, include R
The practical chromatic value of practical chromatic value, G and the practical chromatic values of B.Corresponding, the original luminance value of each three-primary-color image also includes coloration
Value includes R original chrominances, G original chrominances and B original chrominances.
Chromatic value relationship corresponding with chromaticity diagram according to figure 5 can obtain above-mentioned each chromatic value in chromaticity diagram
In x, y-coordinate value.In this way, the practical chromatic values of R, the practical chromatic values of G and the practical chromatic values of B form three points on chromaticity diagram
(M1, M2、M3), these three points are sequentially connected to form triangle Δ M1M2M3, which is known as practical colour triangle.Together
Reason, three point (M are formed by R original chrominances, G original chrominances and B original chrominances on chromaticity diagram4, M5、M6) phase successively
Even, original color gamut triangle Δ M is formed4M5M6。
By Fig. 4 a and Fig. 4 b it is found that the corresponding M of the practical chromatic values of R1Point M corresponding with R original chrominances4Point is located at R colour gamuts
In region, the corresponding M of the practical chromatic values of G2Point M corresponding with G original chrominances5Point is located in G gamut regions, the practical chromatic values of B
Corresponding M3Point M corresponding with B original chrominances6Point is located in B gamut regions.
Since liquid crystal display is there are colour cast, practical colour triangle Δ M1M2M3With original color gamut triangle Δ
M4M5M6Be not overlapped, between there are deviations.
Practical colour triangle Δ M can be obtained in this way1M2M3With original color gamut triangle Δ M4M5M6In target color gamut area
Public region in domain, and be used as with reference to color value in the color value of the vertex correspondence of the public region.
The first example, if the practical colour triangle and the original color gamut triangle are in the target color gamut region
Inside there is intersection point, then using the intersection point as the vertex of the public region.
Specifically, if practical colour triangle intersects with original color gamut triangle in target color gamut region, the present embodiment
An intersection point of the above-mentioned two triangle in R gamut regions, G gamut regions and B gamut regions in any region can be obtained.
Alternatively, obtaining two friendships of two triangles in R gamut regions, G gamut regions and B gamut regions in any two region
Point.Or obtain intersection point of two triangles in each gamut regions.
As shown in fig. 4 a, the intersection point M by the both sides of two triangles in R gamut regions7As the vertex of public region,
By vertex M7Corresponding chromatic value is as R with reference to chromatic value；Similarly, by the both sides of two triangles in G gamut regions
Intersection point M8As the vertex of public region, by vertex M8Corresponding chromatic value is as G with reference to chromatic value；By two triangles
Intersection point M of the both sides in B gamut regions9As the vertex of public region, by vertex M9Corresponding chromatic value is as B reference coloreds
Angle value.
Second of example, if the practical colour triangle and the original color gamut triangle are in the target color gamut region
It is interior that intersection point is not present, then using small vertex of a triangle in the target color gamut region as the vertex of public region.
If specifically, practical colour triangle Δ M1M2M3With original color gamut triangle Δ M4M5M6In some target color gamut
It is non-intersecting in region, it is either non-intersecting in certain two target color gamut region or in three target color gamut regions equal not phases
It hands over, it at this time can be using small vertex of a triangle as the vertex of public region.
As shown in Figure 4 b, if original color gamut triangle Δ M4M5M6Less than practical colour triangle Δ M1M2M3, in this way can be with
By Δ M4M5M6Vertex M in R gamut regions4As the vertex of public region, by vertex M4Corresponding chromatic value is joined as R
According to chromatic value；Similarly, by Δ M4M5M6Vertex M in G gamut regions5As the vertex of public region, by vertex M5It is corresponding
Chromatic value as G with reference to chromatic value；By Δ M4M5M6Vertex M in B gamut regions6As the vertex of public region, by this
Vertex M6Corresponding chromatic value is as B with reference to chromatic value.
Optionally, the color value for the three-primary-color image that above-mentioned S101 is obtained further includes brightness value, corresponding, then can basis
The intrinsic brilliance value and original luminance value of three-primary-color image determine the reference brightness value on the vertex of above-mentioned each public region.
S203, according to described with reference to color value and the actual color value, determine the color correction of the liquid crystal display
Coefficient.
Specifically, obtained according to above-mentioned steps it is each with reference to color value, then, by reference the color value and actual color value into
Row compares, and determines the color correction coefficient of liquid crystal display.
In a kind of example, R correction coefficient can be determined, according to G references according to R with reference to color value and R actual color values
Color value and G actual color values, determine G correction coefficient, according to B with reference to color value and B actual color values, determine B correction coefficient.
For example, using R with reference to color value and the ratio of R actual color values as R correction coefficient.
Optionally, the color check-in of the present embodiment includes not only R, G, B chromatic value, further includes R, G, B brightness value.For example,
Actual color value includes the practical chromatic value of R, G, B and R, G, B intrinsic brilliance value, and original color value includes R, G, B original chrominance
Include R, G, B reference chromatic value and R, G, B reference brightness value with reference to color value with R, G, B original luminance value.
Above-mentioned S203 can specifically include at this time：
According to pair between R intrinsic brilliances value, G intrinsic brilliances value, B intrinsic brilliances value and the reference brightness value of target primary colors
Should be related to and the reference chromatic value of the practical chromatic value of the practical chromatic values of R, the practical chromatic values of G, B and the target primary colors it
Between correspondence, determine each color correction coefficient of the target primary colors respectively on R, G, B, wherein the target primary colors
For any in R primary colors, G primary colors, B primary colors.
Optionally, the color correction coefficient that target is original in liquid crystal display can be determined according to following formula：
Wherein, the i is target primary colors, the ki1、ki2、ki3Respectively described i color corrections on R, G, B respectively
Coefficient, the x_R are component of the practical chromatic values of R in x-axis, and the y_R is the component of the practical chromatic values of R on the y axis, L_R
For R intrinsic brilliance values, the x_G is component of the practical chromatic values of G in x-axis, the y_G be the practical chromatic values of G on the y axis
Component, L_G are G intrinsic brilliance values, and the x_B is component of the practical chromatic values of B in x-axis, and the y_B is the practical chromatic values of B
Component on the y axis, L_B are B intrinsic brilliance values, the xi_stdIt is described for component of the reference chromatic value in x-axis of the i
yi_stdFor the reference chromatic value component on the y axis of the i, the Li_stdFor the reference brightness value of the i.
For example, it is that R is original that target is original, kR1, kR2, kR3Respectively red color correction coefficient corresponding on R, G, B,
xR_stdFor component of the reference chromatic value in x-axis of R, yR_stdFor the reference chromatic value component on the y axis of R, LR_stdFor R's
With reference to brightness value, at this point, above-mentioned formula can be expressed as：
Such three equations, three unknown numbers, can solve kR1, kR2, kR3。
G primary colors corresponding color correction coefficient on R, G, B in liquid crystal display can be calculated with reference to the above method, with
And B primary colors corresponding color correction coefficient on R, G, B.
S204, the sum of each color correction coefficient based on each target primary colors on R correct the driving voltage of R sub-pixels；Base
In each color correction coefficient the sum of of each target primary colors on G, the driving voltage of G sub-pixel is corrected；Based on each target primary colors in B
On the sum of each color correction coefficient, correct the driving voltage of B sub-pixels.
It illustrates, it is assumed that liquid crystal display will show that purple, the original color value of purple are：L=4.5, x=0.24, y
=0.17, corresponding rgb value is：R=92, G=59, B=107, the original driving voltage value of corresponding RGB sub-pixels
For：Original driving voltage=2V of R sub-pixels, original driving voltage=1V of G sub-pixel, the original driving voltage of B sub-pixels
=3V.
It is corrected by above-mentioned steps, obtains R primary colors corresponding color correction coefficient k on R, G, BR1、kR2And kR3, G primary colors
The corresponding color correction coefficient k on R, G, BG1、kG2And kG3, B primary colors corresponding color correction coefficient k on R, G, BB1、kB2
And kB3。
Then, the driving voltage (2V, 1V, 3V) of liquid crystal display is carried out according to each color correction coefficient of above-mentioned acquisition
Correction, obtaining the driving voltage after final correction is：Final driving voltage=(k of R sub-pixelsR1+kG1+kB1) * 2V, G pictures
Final driving voltage=(k of elementR2+kG2+kB2) * 1V, B sub-pixels final driving voltage=(kR3+kG3+kB3)*3V.In this way,
Each driving voltage after correction can be used to drive liquid crystal display, realize the precise calibration to liquid crystal display screen color, improved
The display effect of liquid crystal display.
It should be noted that above-mentioned using the product of the sum of each color correction coefficient and the driving voltage of sub-pixel as sub- picture
The final driving voltage of element is a kind of example, can also be by the ratio of the sum of each color correction coefficient and the driving voltage of sub-pixel
It is worth the final driving voltage as sub-pixel, or according to existing other methods, comes school using the sum of each color correction coefficient
The driving voltage of correct subpixel.
Optionally, in order to further improve the colour cast problem of liquid crystal display, the present embodiment can be to liquid crystal display
Each grayscale colour cast carry out calibration, to improve the real effect of liquid crystal display.
Specifically, gamma correction is carried out to the driving voltage after correction, the colour cast further to improve liquid crystal display is asked
Topic, improves the display effect of liquid crystal display.It should be noted that carrying out the process of gamma correction for ability to driving voltage
Field technique personnel are public offices, and details are not described herein for the present embodiment.
The color calibration method of liquid crystal display provided in an embodiment of the present invention determines the corresponding practical color of actual color value
Domain triangle and the corresponding original color gamut triangle of original color value, and determine practical colour triangle and original color gamut triangle
Public region of the shape in target color gamut region, using the color value of the public region vertex correspondence as with reference to color value, according to
With reference to color value and actual color value, the color correction coefficient of liquid crystal display is determined, and then realize to color correction coefficient
It is accurate to determine so that the driving voltage of liquid crystal display is accurately corrected based on the accurate color correction coefficient.
Fig. 6 is the structural schematic diagram for the liquid crystal display color correction device that the embodiment of the present invention one provides, such as Fig. 6 institutes
Show, the present embodiment liquid crystal display color correction device 100 may include：
Acquisition module 110, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Determining module 120, described according to the actual color value and original color value of each three-primary-color image, determining
The color correction coefficient of liquid crystal display；
Correction module 130 carries out school for being based on the color correction coefficient to the driving voltage of the liquid crystal display
Just.
Fig. 7 is the structural schematic diagram of liquid crystal display color correction device provided by Embodiment 2 of the present invention, in above-mentioned reality
On the basis of applying example, as shown in fig. 7, the determining module 120 of the present embodiment includes：
Processing unit 121, the practical colour gamut three being collectively formed for determining the actual color value of each three-primary-color image
The original color gamut triangle that the original color value of angular and each three-primary-color image is collectively formed, and determine the reality
Colour triangle and public region of the original color gamut triangle in target color gamut region, by the vertex of the public region
Corresponding color value is used as with reference to color value, wherein the target color gamut includes R gamut regions, G gamut regions and B colour gamuts area
At least one of domain；
Determination unit 122, for, with reference to color value and the actual color value, determining the liquid crystal display according to described
Color correction coefficient.
In a kind of possible realization method of the present embodiment, processing unit 121, if being specifically used for the practical colour gamut three
Angular there are intersection points in the target color gamut region with the original color gamut triangle, then using the intersection point as described public
The vertex in section.
Optionally, the original color value, the actual color value and the reference color value include R chromatic values, G colors
Angle value, B chromatic values and R brightness values, G brightness values and B brightness values.
In the alternatively possible realization method of the present embodiment, above-mentioned determination unit 122 is specifically used for according to R reality
Correspondence and R between brightness value, G intrinsic brilliances value, B intrinsic brilliances value and the reference brightness value of target primary colors is practical
The practical chromatic value of chromatic value, G, B practical chromatic value and the reference chromatic value of the target primary colors between correspondence, determine
The target primary colors each color correction coefficient on R, G, B respectively, wherein the target primary colors is R primary colors, G primary colors, B former
Any in color.
In the alternatively possible realization method of the present embodiment, above-mentioned determination unit 122 is specifically used for according to formulaDetermine each color correction of the target primary colors respectively on R, G, B
Coefficient；
Wherein, the i is target primary colors, the ki1、ki2、ki3Respectively described i color corrections on R, G, B respectively
Coefficient, the x_R are component of the practical chromatic values of R in x-axis, and the y_R is the component of the practical chromatic values of R on the y axis, L_R
For R intrinsic brilliance values, the x_G is component of the practical chromatic values of G in x-axis, the y_G be the practical chromatic values of G on the y axis
Component, L_G are G intrinsic brilliance values, and the x_B is component of the practical chromatic values of B in x-axis, and the y_B is the practical chromatic values of B
Component on the y axis, L_B are B intrinsic brilliance values, the xi_stdIt is described for component of the reference chromatic value in x-axis of the i
yi_stdFor the reference chromatic value component on the y axis of the i, the Li_stdFor the reference brightness value of the i.
In the alternatively possible realization method of the present embodiment, above-mentioned correction module is specifically used for former based on each target
Each color correction coefficient the sum of of the color on R corrects the driving voltage of R sub-pixels；Each color based on each target primary colors on G
The sum of correction coefficient corrects the driving voltage of G sub-pixel；The sum of each color correction coefficient based on each target primary colors on B, school
The driving voltage of positive B sub-pixels.
In the alternatively possible realization method of the present embodiment, above-mentioned acquisition module 110 is specifically used for obtaining the liquid
The actual color value of the central point of the shown R primary colour images of crystal display screen difference, G primary colour images and B primary colour images.
In the alternatively possible realization method of the present embodiment, above-mentioned correction module 130 is additionally operable to based on the face
Color correction coefficient, after being corrected to the driving voltage of the liquid crystal display, to the liquid crystal display after correction
Driving voltage carries out gamma correction.
Fig. 8 is the structural schematic diagram for the liquid crystal display color correction device that the embodiment of the present invention three provides, in above-mentioned reality
On the basis of applying example, as shown in figure 8, the liquid crystal display color correction device 100 of the present embodiment can be with：
Preserving module 140, the color correction coefficient for preserving the liquid crystal display.
It should be noted that：The color correction device for the liquid crystal display that above-described embodiment provides is carrying out liquid crystal display
Color correction process when, only the example of the division of the above functional modules, can be as needed in practical application
And complete above-mentioned function distribution by different function modules, i.e., the internal structure of device is divided into different function modules,
To complete all or part of the functions described above.In addition, the color correction device for the crystal display screen that above-described embodiment provides
Belong to same design with the color calibration method embodiment of crystal display screen, specific implementation process refers to embodiment of the method, here
It repeats no more.
Fig. 9 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention, as shown in figure 9, the electronics of the present embodiment
Equipment 200 includes：
Obtain equipment 10, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Memory 11, for storing computer program；
Processor 12, for executing the computer program, to realize the color correction of liquid crystal display described above
The technical solution of method, implementing principle and technical effect are similar, and details are not described herein again.
It should be noted that the electronic equipment can be integrated in liquid crystal display, or individual electronic equipment.
It is real when passing through software at least part function of the color calibration method of liquid crystal display in the embodiment of the present invention
Now, the embodiment of the present invention also provides a kind of computer storage media, and computer storage media is above-mentioned to liquid crystal for being stored as
The computer software instructions of the color correction of display screen, when run on a computer so that computer can execute above-mentioned
The color calibration method of various possible liquid crystal displays in embodiment of the method.Load and execute on computers the computer
When executing instruction, can entirely or partly it generate according to the flow or function described in the embodiment of the present invention.The computer instruction
It can be stored in computer storage media, or be passed from a computer storage media to another computer storage media
Defeated, the transmission can be by wireless (such as cellular communication, infrared, short-distance wireless, microwave etc.) mode to another website
Website, computer, server or data center are transmitted.The computer storage media, which can be computer, to be accessed
Any usable medium is either comprising data storage devices such as one or more usable mediums integrated server, data centers.
The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor
Medium (such as SSD) etc..
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of color calibration method of liquid crystal display, which is characterized in that including：
Obtain the actual color value of each three-primary-color image shown by liquid crystal display；
According to the actual color value and original color value of each three-primary-color image, the color correction of the liquid crystal display is determined
Coefficient；
Based on the color correction coefficient, the driving voltage of the liquid crystal display is corrected.
2. according to the method described in claim 1, it is characterized in that, the actual color value according to each three-primary-color image
And original color value, it determines the color correction coefficient of the liquid crystal display, specifically includes：
Determine the practical colour triangle and each three primary colors that the actual color value of each three-primary-color image is collectively formed
The original color gamut triangle that the original color value of image is collectively formed；
The practical colour triangle and public region of the original color gamut triangle in target color gamut region are determined, by institute
The color value for stating the vertex correspondence of public region is used as with reference to color value, wherein the target color gamut includes R gamut regions, G colors
At least one of domain region and B gamut regions；
According to described with reference to color value and the actual color value, the color correction coefficient of the liquid crystal display is determined.
3. if according to the method described in claim 2, it is characterized in that, the practical colour triangle and the original color gamut three
Angular there are intersection points in the target color gamut region, then using the intersection point as the vertex of the public region.
4. according to the method described in claim 3, it is characterized in that, the original color value, the actual color value and described
Include R chromatic values, G chromatic values, B chromatic values and R brightness values, G brightness values and B brightness values with reference to color value.
5. according to the method described in claim 4, it is characterized in that, described according to reference color value and the actual color
Value, determines the color correction coefficient of the liquid crystal display, specifically includes：
According to the corresponding pass between R intrinsic brilliances value, G intrinsic brilliances value, B intrinsic brilliances value and the reference brightness value of target primary colors
System and the practical chromatic values of R, the practical chromatic values of G, B practical chromatic value and the reference chromatic value of the target primary colors between
Correspondence determines each color correction coefficient of the target primary colors respectively on R, G, B, wherein the target primary colors is R former
Any in color, G primary colors, B primary colors.
6. according to the method described in claim 5, it is characterized in that, described real according to R intrinsic brilliances value, G intrinsic brilliances value, B
Correspondence and the practical chromatic values of R, the practical chromatic values of G, B between border brightness value and the reference brightness value of target primary colors
Correspondence between practical chromatic value and the reference chromatic value of the target primary colors, determine the target primary colors respectively R, G,
Each color correction coefficient on B, specifically includes：
According to formulaDetermine the target primary colors respectively on R, G, B
Each color correction coefficient；
Wherein, the i is target primary colors, the ki1、ki2、ki3Respectively described i color correction coefficients on R, G, B respectively,
The x_R is component of the practical chromatic values of R in x-axis, and the y_R is the component of the practical chromatic values of R on the y axis, and L_R is R real
Border brightness value, the x_G are component of the practical chromatic values of G in x-axis, and the y_G is the component of the practical chromatic values of G on the y axis,
L_G is G intrinsic brilliance values, and the x_B is component of the practical chromatic values of B in x-axis, and the y_B is the practical chromatic values of B in y-axis
On component, L_B be B intrinsic brilliance values, the xi_stdFor component of the reference chromatic value in x-axis of the i, the yi_std
For the reference chromatic value component on the y axis of the i, the Li_stdFor the reference brightness value of the i.
7. according to the method described in claim 6, it is characterized in that, described be based on the color correction coefficient, to the liquid crystal
The driving voltage of display screen is corrected, and is specifically included：
The sum of each color correction coefficient based on each target primary colors on R corrects the driving voltage of R sub-pixels；
The sum of each color correction coefficient based on each target primary colors on G, corrects the driving voltage of G sub-pixel；
The sum of each color correction coefficient based on each target primary colors on B corrects the driving voltage of B sub-pixels.
8. according to the method described in claim 1, it is characterized in that, each three obtained shown by the liquid crystal display are former
The actual color value of color image, specifically includes：
Obtain the reality of the central point of the shown R primary colour images of the liquid crystal display difference, G primary colour images and B primary colour images
Border color value.
9. according to the method described in claim 1, it is characterized in that, described be based on the color correction coefficient, to the liquid crystal
After the driving voltage of display screen is corrected, the method further includes：
Gamma correction is carried out to the driving voltage of the liquid crystal display after correction.
10. a kind of color correction device of liquid crystal display, which is characterized in that including：
Acquisition module, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Determining module determines the liquid crystal for the actual color value and original color value according to each three-primary-color image
The color correction coefficient of display screen；
Correction module is corrected the driving voltage of the liquid crystal display for being based on the color correction coefficient.
11. a kind of electronic equipment, which is characterized in that including：
Obtain equipment, the actual color value for obtaining each three-primary-color image shown by liquid crystal display；
Memory, for storing computer program；
Processor, for executing the computer program, to realize the face of claim 1-9 any one of them liquid crystal displays
Color bearing calibration.
12. a kind of computer storage media, which is characterized in that store computer program, the computer in the storage medium
Program realizes the color calibration method of the liquid crystal display described in any one of claim 1-9 when being executed.
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