CN105304062B - The colourity adjusting method and device of LCDs - Google Patents
The colourity adjusting method and device of LCDs Download PDFInfo
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Abstract
The invention provides the colourity adjusting method and device of a kind of LCDs, wherein, this method includes measuring display screen to be regulated in minimum gray value and the chromaticity coordinate of maximum gray value；The chromaticity coordinate of the critical grey decision-making of display screen to be regulated is arranged to the chromaticity coordinate of maximum gray value；According to the chromaticity coordinate and conventional display of the minimum gray value of display screen to be regulated and critical grey decision-making from minimum gray value to the reference chromaticity coordinate critical grey decision-making, display screen to be regulated is calculated respectively from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making；And according to display screen to be regulated from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making, to adjust the colourity of display screen to be regulated.According to the colourity adjusting method and device of the LCDs of the present invention, instrument can be utilized automatic and adjust the colourity of display screen exactly, so as to be greatly enhanced the colourity debugging efficiency of display screen.
Description
Technical field
The present invention relates to the colourity adjusting method and device of field of liquid crystal display, more particularly to a kind of LCDs.
Background technology
LCDs has goed deep into the every field of people's life as a kind of wide variety of display device, and it can be with
The abundant color of display, it can also reproduce the abundant details of low GTG scene (picture) and high gray scene.Human eye is particularly with low
Grey menu is very sensitive, can relatively easily tell color and the deviation of brightness under dark picture.Therefore, in debugging LCDs
During processing for low GTG be just particularly important, it can directly affect the expression effect of display screen.
At present, adjust the method for low GTG colourity and brightness mainly using eye-observation less than obvious taste problem as most
Whole target, or LCDs is measured using instrument, then debugged according to measurement result, so that its is bright
Degree and colourity keep smooth excessiveness substantially.
It for the regulation in terms of brightness, can be automatically performed by instrument, or be aided with a small amount of artificial carry out fine adjustments.
However, for the regulation in terms of colourity, because change procedure of the colourity in low GTG is not linear, and do not have
There is clear and definite formula, i.e., without clear and definite aim colour angle value, therefore be difficult to be adjusted with instrument.
On the other hand, way relatively common at present is to be directed to low GTG when seeing with human eye to be adjusted stepwise, take a fancy to it
Colourity is gone to keep seamlessly transitting substantially, so not only regulation efficiency is low, and due to everyone vision difference, may cause to adjust
The colourity saved out also has larger difference.
The content of the invention
Technical problem
In view of this, how automatically and accurately the technical problem to be solved in the present invention is the color of adjustable liquid crystal display display screen
Degree.
Solution
According to an aspect of the invention, there is provided a kind of colourity adjusting method of LCDs, including：Measure and wait to adjust
Display screen is saved in minimum gray value and the chromaticity coordinate of maximum gray value；By the color of the critical grey decision-making of the display screen to be regulated
Degree coordinate is arranged to the chromaticity coordinate of the maximum gray value；According to the minimum gray value of the display screen to be regulated and critical ash
Rank value chromaticity coordinate and conventional display from minimum gray value to reference the chromaticity coordinate critical grey decision-making, divide
The display screen to be regulated is not calculated from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making；And root
It is described to adjust according to the display screen to be regulated from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making
The colourity of display screen to be regulated.
For above-mentioned colourity adjusting method, in a kind of possible implementation, according to the display screen to be regulated most
The chromaticity coordinate and conventional display of small grey decision-making and critical grey decision-making from minimum gray value to critical grey decision-making
With reference to chromaticity coordinate, the display screen to be regulated is calculated respectively from minimum gray value to each grey decision-making critical grey decision-making
Chromaticity coordinate, including：First chromaticity coordinate calculation procedure, in the reference chromaticity coordinate according to the conventional display
The first colourity in the chromaticity coordinate of one chromaticity coordinate, the minimum gray value of the display screen to be regulated and critical grey decision-making is sat
Mark, sat to calculate the display screen to be regulated from minimum gray value to the first colourity of each grey decision-making critical grey decision-making
Mark；Second chromaticity coordinate calculation procedure, for according to the display screen to be regulated from minimum gray value to critical grey decision-making
The first chromaticity coordinate of each grey decision-making, the first chromaticity coordinate and the second color in the reference chromaticity coordinate of the conventional display
Coordinate is spent, to calculate the display screen to be regulated from minimum gray value to the second colourity of each grey decision-making critical grey decision-making
Coordinate.
For above-mentioned colourity adjusting method, in a kind of possible implementation, calculate and walk in first chromaticity coordinate
The of the display screen to be regulated from minimum gray value to each grey decision-making critical grey decision-making is calculated in rapid using following formula 1
One chromaticity coordinate,
Formula 1
Wherein, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；
xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiRepresent
The conventional display from the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
One chromaticity coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；
x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iRepresent
The display screen to be regulated from first in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
Chromaticity coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
For above-mentioned colourity adjusting method, in a kind of possible implementation, calculate and walk in second chromaticity coordinate
The of the display screen to be regulated from minimum gray value to each grey decision-making critical grey decision-making is calculated in rapid using following formula 2
Two chromaticity coordinates,
Formula 2
Wherein, dM=yM-xM, yMRepresent second in the minimum gray value M of conventional display reference chromaticity coordinate
Chromaticity coordinate；
di=yi-xi, yiRepresent the conventional display from each GTG minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in value i reference chromaticity coordinate；
dN=yN-xN, yNRepresent the second colourity in the critical grey decision-making N of conventional display reference chromaticity coordinate
Coordinate；
d'M=y'M-x'M, y 'MRepresent the second color in the minimum gray value M of the display screen to be regulated chromaticity coordinate
Spend coordinate；
d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in grey decision-making i chromaticity coordinate；
d'N=y'N-x'N, y 'NRepresent the second color in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate
Spend coordinate.
For above-mentioned colourity adjusting method, in a kind of possible implementation, in addition to：
Optical parametric is selected to be located at the LCDs of median as the standard shows from multiple LCDs
Screen.
According to another aspect of the present invention, there is provided a kind of colourity adjusting means of LCDs, including：Measure mould
Block, for measuring display screen to be regulated in minimum gray value and the chromaticity coordinate of maximum gray value；Setup module, with the measurement
Module connects, for the chromaticity coordinate of the critical grey decision-making of the display screen to be regulated to be arranged to the color of the maximum gray value
Spend coordinate；Chromaticity coordinate computing module, it is connected respectively with the measurement module and the setup module, for waiting to adjust according to
Save the minimum gray value of display screen and the chromaticity coordinate of critical grey decision-making and conventional display from minimum gray value to critical
Reference chromaticity coordinate between grey decision-making, the display screen to be regulated is calculated respectively from minimum gray value to critical grey decision-making
Each grey decision-making chromaticity coordinate；And colourity adjustment module, it is connected with the chromaticity coordinate computing module, for according to
Display screen to be regulated is described to be regulated to adjust from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making
The colourity of display screen.
For above-mentioned colourity adjusting means, in a kind of possible implementation, the chromaticity coordinate computing module includes：
First chromaticity coordinate computing module, for the first chromaticity coordinate in the reference chromaticity coordinate according to the conventional display, institute
The first chromaticity coordinate in the minimum gray value of display screen to be regulated and the chromaticity coordinate of critical grey decision-making is stated, to calculate described treat
Display screen is adjusted from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making；Second chromaticity coordinate meter
Calculate module, be connected with the first chromaticity coordinate computing module, for according to the display screen to be regulated from minimum gray value to
The first color in first chromaticity coordinate of each grey decision-making between critical grey decision-making, the reference chromaticity coordinate of the conventional display
Coordinate and the second chromaticity coordinate are spent, to calculate the display screen to be regulated from minimum gray value to each ash critical grey decision-making
Second chromaticity coordinate of rank value.
For above-mentioned colourity adjusting means, in a kind of possible implementation, the first chromaticity coordinate computing module
The display screen to be regulated is calculated using following formula 1 from minimum gray value to the first color of each grey decision-making critical grey decision-making
Spend coordinate,
Formula 1
Wherein, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；
xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiRepresent
The conventional display from the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
One chromaticity coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；
x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iRepresent
The display screen to be regulated from first in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
Chromaticity coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
For above-mentioned colourity adjusting means, in a kind of possible implementation, the second chromaticity coordinate computing module
The display screen to be regulated is calculated using following formula 2 from minimum gray value to the second color of each grey decision-making critical grey decision-making
Spend coordinate,
Formula 2
Wherein, dM=yM-xM, yMRepresent second in the minimum gray value M of conventional display reference chromaticity coordinate
Chromaticity coordinate；
di=yi-xi, yiRepresent the conventional display from each GTG minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in value i reference chromaticity coordinate；
dN=yN-xN, yNRepresent the second colourity in the critical grey decision-making N of conventional display reference chromaticity coordinate
Coordinate；
d'M=y'M-x'M, y 'MRepresent the second color in the minimum gray value M of the display screen to be regulated chromaticity coordinate
Spend coordinate；
d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in grey decision-making i chromaticity coordinate；
d'N=y'N-x'N, y 'NRepresent the second color in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate
Spend coordinate.
For above-mentioned colourity adjusting means, in a kind of possible implementation, in addition to：
Selecting module, it is connected with the chromaticity coordinate computing module, for selecting Optical Parametric from multiple LCDs
Numerical digit in median LCDs as the conventional display.
Beneficial effect
The colourity adjusting method and device of the LCDs provided according to the present embodiment, can be by being used as standard shows
The chromaticity coordinate of each low GTG of screen calculates the chromaticity coordinate of each low GTG of other display screens to be regulated, so as to basis
The chromaticity coordinate of each low GTG calculated adjusts the colourity of display screen, and to obtain, optical parametric is good and eye-observation
Less than the display screen of obvious taste problem.According to the colourity adjusting method and device of the present embodiment, instrument can be utilized automatic
And the colourity of display screen is adjusted exactly, so as to be greatly enhanced the colourity debugging efficiency of display screen.
According to below with reference to the accompanying drawings becoming to detailed description of illustrative embodiments, further feature of the invention and aspect
It is clear.
Brief description of the drawings
Comprising in the description and the accompanying drawing of a part for constitution instruction and specification together illustrate the present invention's
Exemplary embodiment, feature and aspect, and for explaining the principle of the present invention.
Fig. 1 shows the flow chart of the colourity adjusting method of LCDs according to an embodiment of the invention；
Fig. 2 shows the chroma curve figure of conventional display；
Fig. 3 shows conventional display and carries out the chroma curve comparison diagram of the display screen after colourity debugging；
Fig. 4 shows conventional display and carries out the contrast of the chroma curve of the low grey exponent part of the display screen after colourity debugging
Figure；
Fig. 5 shows the structured flowchart of the colourity adjusting means of LCDs according to an embodiment of the invention.
Embodiment
Describe various exemplary embodiments, feature and the aspect of the present invention in detail below with reference to accompanying drawing.It is identical in accompanying drawing
Reference represent the same or analogous element of function.Although the various aspects of embodiment are shown in the drawings, remove
Non-specifically point out, it is not necessary to accompanying drawing drawn to scale.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the present invention, numerous details is given in embodiment below.
It will be appreciated by those skilled in the art that without some details, the present invention can equally be implemented.In some instances, for
Method, means, element and circuit well known to those skilled in the art are not described in detail, in order to highlight the purport of the present invention.
Embodiment 1
Fig. 1 shows the flow chart of the colourity adjusting method of LCDs according to an embodiment of the invention.Such as Fig. 1 institutes
Show, the colourity adjusting method mainly may comprise steps of：
Step S100, display screen to be regulated is measured in minimum gray value and the chromaticity coordinate of maximum gray value；
Step S101, the colourity that the chromaticity coordinate of the critical grey decision-making of display screen to be regulated is arranged to maximum gray value is sat
Mark；
Step S102, according to the minimum gray value of display screen to be regulated and the chromaticity coordinate and standard of critical grey decision-making
Display screen from minimum gray value to the reference chromaticity coordinate critical grey decision-making, calculate display screen to be regulated respectively from minimum
Chromaticity coordinate of the grey decision-making to each grey decision-making between critical grey decision-making；And
Step S103, according to display screen to be regulated from minimum gray value to the colourity of each grey decision-making critical grey decision-making
Coordinate, to adjust the colourity of display screen to be regulated.
For above-mentioned steps S100, in a kind of possible implementation, the brightness of display screen to be regulated can be first adjusted,
Specifically can be by its brightness regulation into predetermined gamma, such as it is adjusted to gamma2.2 curves.Then again will be to be regulated aobvious
Display screen is placed under white balance state, measures display screen to be regulated in minimum gray value and the chromaticity coordinate of maximum gray value.Wherein,
The grey decision-making of display screen to be regulated for example can be 0~255, and in this case, minimum gray value is 0, and maximum gray value is
255.Under normal circumstances, chromaticity coordinate can be expressed as (x, y).
For above-mentioned steps S101, in display screen, under normal circumstances in the presence of a critical GTG.From minimum gray to facing
Boundary's GTG, the colourity of display screen gradually change.But with the rise of GTG, human eye cannot see that obvious color is inclined
Difference.Therefore, when carrying out the colourity regulation of display screen, it will usually by display screen to be regulated from critical grey decision-making to maximum gray value
Chromaticity coordinate be adjusted to unanimously.In a kind of possible implementation, the chromaticity coordinate by critical grey decision-making to big grey decision-making
It is adjusted to the chromaticity coordinate of maximum gray value.
For above-mentioned steps S102, in a kind of possible implementation, it can mainly include the first chromaticity coordinate and calculate
Step (step S1021) and the second chromaticity coordinate calculation procedure (step S1022).
In above-mentioned first chromaticity coordinate calculation procedure, according to the first colourity in the reference chromaticity coordinate of conventional display
The first chromaticity coordinate in the chromaticity coordinate of coordinate, the minimum gray value of display screen to be regulated and critical grey decision-making, is treated to calculate
Display screen is adjusted from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making.
Specifically, when to carry out colourity regulation to a collection of display screen, a conventional display is selected first as base
Standard, by the brightness regulation of the conventional display into after predetermined gamma, such as gamma2.2 curves, by should
Conventional display is placed under white balance state and the colourity of the conventional display is adjusted, so that the colourity of the display screen is basic
Smooth transition is kept, and eye-observation is less than obvious taste problem.The determination method of conventional display can have it is a variety of,
In a kind of possible implementation, the optical parametric of multiple LCDs can be measured in advance, from these liquid crystal
Optical parametric is selected to be located at the LCDs of median as conventional display in display screen.Wherein, optical parametric can be
The brightness of LCDs and colourity etc..It is used as standard shows by selecting optical parametric to be located at the LCDs of median
Screen, it is possible to reduce the deviation of colourity between display screen and conventional display to be regulated, so as to save subsequent adjustment into optics
Parameter is good and eye-observation less than the display screen of obvious taste problem time.
As shown in Fig. 2 the conventional display carried out after above-mentioned colourity regulation correspond to the good colourity song of a comparison
Line, using the chroma curve as reference chroma curve during subsequent adjustment.Then, chroma curve is referred to according to this, for standard
Each grey decision-making of display screen, the chromatic value of each grey decision-making can be recorded, refer to chromaticity coordinate.In a kind of possible implementation
In, grey decision-making is 0~255, and the reference chromaticity coordinate of each grey decision-making can be expressed as (xi,yi), wherein, i=0,1,2 ...
255。
Because the colourity variation tendency of each display screen is basically identical, i.e., it is curve shape as shown in Figure 2.
Therefore, it can utilize and calculate other to be regulated show on the chroma curve of conventional display for the chromaticity coordinate of each GTG
The chromaticity coordinate of display screen each GTG accordingly.
Specifically, in above-mentioned first chromaticity coordinate calculation procedure, can utilize conventional display minimum gray value,
The first chromaticity coordinate from minimum gray value to critical grey decision-making, in the reference chromaticity coordinate of critical grey decision-making, and in step
The minimum gray value of display screen to be regulated that measures or set in S100, S101, first in the chromaticity coordinate of critical grey decision-making
Chromaticity coordinate, come calculate display screen to be regulated from minimum gray value to critical grey decision-making in each grey decision-making, i.e. low grey decision-making
Chromaticity coordinate the first chromaticity coordinate.
For example, the grey-scale range of display screen is 0~255, wherein, minimum gray value is 0, and critical grey decision-making is 20,
The first chromaticity coordinate x in the reference chromaticity coordinate of 0 GTG of conventional display, 1 GTG, 20 GTGs can be utilized0、x1、x20,
And the first chromaticity coordinate x ' in 0 GTG of display screen to be regulated and the chromaticity coordinate of 20 GTGs0、x’20, wait to adjust to calculate
Save the first chromaticity coordinate x ' in the chromaticity coordinate of 1 GTG of display screen1.By that analogy, display screen to be regulated can be calculated
2~19 GTGs chromaticity coordinate in the first chromaticity coordinate x ' 2 ... ... x ' 19.
In above-mentioned second chromaticity coordinate calculation procedure, according to display screen to be regulated from minimum gray value to critical grey decision-making
Between the first chromaticity coordinate of each grey decision-making, the first chromaticity coordinate and the second color in the reference chromaticity coordinate of conventional display
Coordinate is spent, is sat to calculate display screen to be regulated from minimum gray value to the second colourity of each grey decision-making critical grey decision-making
Mark.
Specifically, in above-mentioned second chromaticity coordinate calculation procedure, the minimum gray of display screen to be regulated can be utilized
The first chromaticity coordinate (in the step s 100 measurement obtain) in the chromaticity coordinate of value, from minimum gray value to critical grey decision-making
The first chromaticity coordinate (being calculated in above-mentioned first chromaticity coordinate calculation procedure) in chromaticity coordinate, the color of critical grey decision-making
The first chromaticity coordinate (set and obtain in by above-mentioned steps S101) and the minimum gray of conventional display spent in coordinate
Value, the first chromaticity coordinate from minimum gray value to critical grey decision-making, in the reference chromaticity coordinate of critical grey decision-making and the second color
Coordinate is spent, is sat to calculate display screen to be regulated from minimum gray value to the second colourity of each grey decision-making critical grey decision-making
Mark.
For example, the first chromaticity coordinate x ' in the chromaticity coordinate of 0 GTG of display screen to be regulated can be utilized0, 1 ash
The first chromaticity coordinate x ' in the chromaticity coordinate of rank1, 20 GTGs chromaticity coordinate in the first chromaticity coordinate x '20, with reference to colourity
The first chromaticity coordinate x in coordinate0、x1、x20And chromaticity coordinate (the x of 0 GTG of conventional display0,y0), conventional display
1 GTG chromaticity coordinate (x1,y1), the chromaticity coordinate (x of 20 GTGs of conventional display20,y20), it is to be regulated aobvious to calculate
The second chromaticity coordinate y ' in the chromaticity coordinate of 1 GTG of display screen1, by that analogy, can calculate display screen to be regulated 2~
The second chromaticity coordinate y ' in the chromaticity coordinate of 19 GTGs2... ... y '19。
Thus, by above-mentioned first chromaticity coordinate calculation procedure and the second chromaticity coordinate calculation procedure, it can calculate and treat
Adjust the chromaticity coordinate of each grey decision-making (i.e. low GTG) of the display screen from minimum gray value to critical grey decision-making.
, can be according to calculating from minimum gray value to each GTG critical grey decision-making for above-mentioned steps S103
The chromaticity coordinate of value adjusts the colourity of display screen to be regulated.Specifically, the minimum gray value that can be obtained according to measurement
Chromaticity coordinate, calculate from minimum gray value to the chromaticity coordinate of critical grey decision-making, from critical grey decision-making to maximum gray value
Chromaticity coordinate (chromaticity coordinate for being all provided with being set to the maximum gray value measured), to adjust the colourity of display screen.
Further, since the variation tendency of the first chromaticity coordinate and the second chromaticity coordinate in the chromaticity coordinate of each display screen is
Basically identical, therefore, in a kind of possible implementation, it can utilize described in above-mentioned first chromaticity coordinate calculation procedure
Bright method calculates the second chromaticity coordinate, and correspondingly, utilize side illustrated in above-mentioned second chromaticity coordinate calculation procedure
Method calculates the first chromaticity coordinate.
The colourity adjusting method of the LCDs provided according to the present embodiment, can be by being used as each of conventional display
The chromaticity coordinate of low GTG calculates the chromaticity coordinate of each low GTG of other display screens to be regulated, so as to according to being calculated
The chromaticity coordinate of each low GTG gone out adjusts the colourity of display screen, and to obtain, optical parametric is good and eye-observation is less than bright
The display screen of aobvious taste problem.According to the colourity adjusting method of the present embodiment, instrument can be utilized automatic and adjusted exactly
The colourity of display screen, so as to be greatly enhanced the colourity debugging efficiency of display screen.
Embodiment 2
The main distinction of the present embodiment and above-described embodiment 1 is, specific in above-mentioned first chromaticity coordinate calculation procedure
Display screen to be regulated can be calculated using following formula 1 from minimum gray value to the first color of each grey decision-making critical grey decision-making
Spend coordinate,
Formula 1
Wherein, equation 1 above can specifically be derived by following formula 3,
Formula 3
In equation 1 above, 3, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；
xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiRepresent
The conventional display from the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
One chromaticity coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；
x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iRepresent
The display screen to be regulated from first in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
Chromaticity coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
In a kind of possible implementation, it can be counted in above-mentioned second chromaticity coordinate calculation procedure using following formula 2
Display screen to be regulated is calculated from minimum gray value to the second chromaticity coordinate of each grey decision-making critical grey decision-making,
Formula 2
Wherein, equation 2 above can specifically be derived by following formula 4,
Formula 4
In equation 2 above, 4, dM=yM-xM, yMRepresent the minimum gray value M of conventional display reference chromaticity coordinate
In the second chromaticity coordinate；
di=yi-xi, yiRepresent the conventional display from each GTG minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in value i reference chromaticity coordinate；
dN=yN-xN, yNRepresent the second colourity in the critical grey decision-making N of conventional display reference chromaticity coordinate
Coordinate；
d'M=y'M-x'M, y 'MRepresent the second color in the minimum gray value M of the display screen to be regulated chromaticity coordinate
Spend coordinate；
d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in grey decision-making i chromaticity coordinate；
d'N=y'N-x'N, y 'NRepresent the second color in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate
Spend coordinate.
In a kind of possible implementation, the first chromaticity coordinate x in equation 1 above can also be replaced with y, specifically can be with
Y is calculated using formula such as following formula 1 ',
Formula 1 '
Correspondingly, equation 1 above ' derived by following formula 3 ',
Formula 3 '
In a kind of possible implementation, the second chromaticity coordinate y in equation 2 above can also be replaced with x, specifically can be with
X is calculated using formula such as following formula 2 ',
Formula 2 '
Wherein, equation 2 above can specifically be derived by following formula 4,
Formula 4 '
Wherein, dM=xM-yM, di=xi-yi, dN=xN-yN, d'M=x'M-y'M, d 'i=x 'i-y′i, d'N=x'N-y'N。
It is a concrete application example of the present embodiment below, its detailed process is as follows.
1st, the display screen that an optical parametric is located near median is selected from a collection of LCDs, by the display screen
It is designated as conventional display.Wherein LCDs is, for example, vertical orientation type (English：Vertical Alignment) display screen,
Grey decision-making is 0~255, and the optical parametric is, for example, brightness.Then colourity debugging is carried out to the conventional display, by display screen
Debug into optical parametric well and eye-observation is less than the chroma curve of obvious taste problem, the chroma curve such as Fig. 2 institutes
Show, preserve the chroma curve and as with reference to chroma curve.The chromaticity coordinate of each GTG of conventional display is designated as (xi,
yi), i=0,1 ..., 255.
2nd, display screen to be regulated is taken out, its brightness is adjusted to gamma2.2 curves first, and make at the display screen to be regulated
Under white balance state, the chromaticity coordinate of its 0 (minimum gray value) rank and 255 (maximum gray value) ranks is then measured respectively
(x’0,y’0) and (x '255,y’255), the chromaticity coordinate of 20 (critical grey decision-making) rank to 254 ranks is adjusted to identical with 255 ranks, waits to adjust
The chromaticity coordinate of section display screen is designated as (x 'i,y’i), i=0,1 ..., 255.Now, (x '20,y’20)=(x '255,y’255)。
3rd, according to the chromaticity coordinate (x ' with reference to chroma curve and 0 GTG of display screen to be regulated0,y’0) and 20 ranks color
Spend coordinate (x '20,y’20), come calculate 1~19 rank of display screen to be regulated (from minimum gray value to critical grey decision-making, i.e., low ash
Rank) chromaticity coordinate.
First, the first chromaticity coordinate x ' is calculatedj, j=1,2 ... ..., 19.
Conventional display and display screen to be regulated meet following formula 5,
Formula 5
Following formula 6 is arranged to obtain,
Formula 6
Thereby, it is possible to the first chromaticity coordinate of all low GTGs for obtaining display screen to be regulated.
Secondly, the second chromaticity coordinate y ' is calculatedj, j=1,2 ... ..., 19.
It should be noted that can not be gone to adjust y (the second chromaticity coordinate) with the method similar to x (the first chromaticity coordinate),
Because the performance of color can be influenceed by two values of x and y simultaneously, if adjusting x respectively, y is without considering that its interaction is closed
System, then it can be caused to be combined into the color come inconsistent under different GTGs.Therefore, in this example, shown when adjusting y with standard
Difference between the x and y of display screen is standard, goes to adjust the y of display screen to be regulated.
Specifically, if d0=y0-x0, dj=yj-xj, d20=y20-x20, d'0=y'0-x'0, d'j=y'j-x'j d'20=
y'20-x'20, j=1,2 ... ..., 19.
Correspondingly, conventional display and display screen to be regulated meet following formula 7,
Formula 7
Following formula 8 is arranged to obtain,
Formula 8
Again by y'j=x'j+d'j, that is, obtain y 'j。
Thereby, it is possible to the second chromaticity coordinate of all low GTGs for obtaining display screen to be regulated.
4th, the colourity of display screen is adjusted according to the chromaticity coordinate of 0~255 GTG obtained in said process.
Specifically, applied according to the chromaticity coordinate of 0~255 GTG, regulation to each RGB sub-pixels pair on LCDs
The voltage on liquid crystal cell answered, so as to adjust the colourity of display screen.After being illustrated in figure 3 conventional display and carrying out colourity debugging
Display screen chroma curve comparison diagram, be illustrated in figure 4 conventional display and carry out colourity debugging after display screen low ash
The comparison diagram of the chroma curve of exponent part.
So, according to the colourity adjusting method in this example, colourity regulation automatically and accurately can be carried out to display screen,
So that by display screen debugging, into optical parametric, good and eye-observation samples problem less than obvious.
The colourity adjusting method of the LCDs provided according to the present embodiment, can be by being used as each of conventional display
The chromaticity coordinate of low GTG calculates the chromaticity coordinate of each low GTG of other display screens to be regulated, so as to according to being calculated
The chromaticity coordinate of each low GTG gone out adjusts the colourity of display screen, and to obtain, optical parametric is good and eye-observation is less than bright
The display screen of aobvious taste problem.According to the colourity adjusting method of the present embodiment, instrument can be utilized automatic and adjusted exactly
The colourity of display screen, so as to be greatly enhanced the colourity debugging efficiency of display screen.
It should be noted that although describing the colourity adjusting method of the present invention as example using grey decision-making as 0~255,
It is understood by one of ordinary skill in the art that the present invention answers not limited to this.It is in fact possible to according to display screen in practice to grey decision-making
Setting come flexibly changed.
Embodiment 3
Fig. 5 shows the structured flowchart of the colourity adjusting means of LCDs according to an embodiment of the invention.Such as
Shown in Fig. 5, the colourity adjusting means 50 of LCDs can mainly include：Measurement module 51, setup module 52, chromaticity coordinate
Computing module 53 and colourity adjustment module 54.Wherein, measurement module 51 is mainly used in measuring display screen to be regulated in minimum ash
Rank is worth and the chromaticity coordinate of maximum gray value；Setup module 52 can be connected with measurement module 51, be mainly used in waiting to adjust by described
The chromaticity coordinate for saving the critical grey decision-making of display screen is arranged to the chromaticity coordinate of the maximum gray value；Chromaticity coordinate computing module
53 can be connected with measurement module 51 and setup module 52 respectively, be mainly used in the minimum gray according to the display screen to be regulated
Value and critical grey decision-making chromaticity coordinate and conventional display from minimum gray value to the reference color critical grey decision-making
Coordinate is spent, the display screen to be regulated is calculated respectively and is sat from minimum gray value to the colourity of each grey decision-making critical grey decision-making
Mark；Colourity adjustment module 54 can be connected with chromaticity coordinate computing module 53, be mainly used according to the display screen to be regulated from
Minimum gray value to each grey decision-making between critical grey decision-making chromaticity coordinate, to adjust the colourity of the display screen to be regulated.
In a kind of possible implementation, chromaticity coordinate computing module 53 can mainly include the first chromaticity coordinate and calculate
The chromaticity coordinate computing module 532 of module 531 and second.Wherein, the first chromaticity coordinate computing module 531 is mainly used according to
The minimum gray value of the first chromaticity coordinate, the display screen to be regulated in the reference chromaticity coordinate of conventional display and critical ash
The first chromaticity coordinate in the chromaticity coordinate of rank value, to calculate the display screen to be regulated from minimum gray value to critical grey decision-making
Between each grey decision-making the first chromaticity coordinate；Second chromaticity coordinate computing module 532 can be with the first chromaticity coordinate meter
Calculate module 531 to connect, be mainly used according to the display screen to be regulated from minimum gray value to each ash critical grey decision-making
The first chromaticity coordinate, the first chromaticity coordinate in the reference chromaticity coordinate of the conventional display and the second colourity of rank value are sat
Mark, sat to calculate the display screen to be regulated from minimum gray value to the second colourity of each grey decision-making critical grey decision-making
Mark.
The above-mentioned colourity adjusting means of the present embodiment can be used for performing the colourity adjusting method of above-described embodiment 1, the color
Spend idiographic flow being specifically described referring to above-described embodiment 1 of adjusting method.
In a kind of possible implementation, the first chromaticity coordinate computing module 531 can be calculated described using following formula 1
Display screen to be regulated from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making,
Formula 1
Wherein, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；
xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiRepresent
The conventional display from the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
One chromaticity coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；
x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iRepresent
The display screen to be regulated from first in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N
Chromaticity coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
In a kind of possible implementation, the second chromaticity coordinate computing module 532 can be calculated described using following formula 2
Display screen to be regulated from minimum gray value to the second chromaticity coordinate of each grey decision-making critical grey decision-making,
Formula 2
Wherein, dM=yM-xM, yMRepresent second in the minimum gray value M of conventional display reference chromaticity coordinate
Chromaticity coordinate；
di=yi-xi, yiRepresent the conventional display from each GTG minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in value i reference chromaticity coordinate；
dN=yN-xN, yNRepresent the second colourity in the critical grey decision-making N of conventional display reference chromaticity coordinate
Coordinate；
d'M=y'M-x'M, y 'MRepresent the second color in the minimum gray value M of the display screen to be regulated chromaticity coordinate
Spend coordinate；
d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each minimum gray value M to critical grey decision-making N
The second chromaticity coordinate in grey decision-making i chromaticity coordinate；
d'N=y'N-x′N, y 'NRepresent the second color in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate
Spend coordinate.
In a kind of possible implementation, above-mentioned colourity adjusting means also includes selecting module 55.Wherein, selecting module
55 can be connected with the chromaticity coordinate computing module 53, be mainly used in selecting optical parametric to be located at from multiple LCDs
The LCDs of median is as the conventional display.
The above-mentioned colourity adjusting means of the present embodiment can be used for performing the colourity adjusting method of above-described embodiment 2, the color
Spend idiographic flow being specifically described referring to above-described embodiment 2 of adjusting method.
The colourity adjusting means of the LCDs provided according to the present embodiment, can be by being used as each of conventional display
The chromaticity coordinate of low GTG calculates the chromaticity coordinate of each low GTG of other display screens to be regulated, so as to according to being calculated
The chromaticity coordinate of each low GTG gone out adjusts the colourity of display screen, and to obtain, optical parametric is good and eye-observation is less than bright
The display screen of aobvious taste problem.According to the colourity adjusting means of the present embodiment, instrument can be utilized automatic and adjusted exactly
The colourity of display screen, so as to be greatly enhanced the colourity debugging efficiency of display screen.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
- A kind of 1. colourity adjusting method of LCDs, it is characterised in that including：Display screen to be regulated is measured in minimum gray value and the chromaticity coordinate of maximum gray value；The chromaticity coordinate of the critical grey decision-making of the display screen to be regulated is arranged to the chromaticity coordinate of the maximum gray value；According to the chromaticity coordinate and conventional display of the minimum gray value of the display screen to be regulated and critical grey decision-making from Minimum gray value calculates the display screen to be regulated from minimum gray value respectively to the reference chromaticity coordinate between critical grey decision-making To the chromaticity coordinate of each grey decision-making between critical grey decision-making；AndAccording to the display screen to be regulated from minimum gray value to the chromaticity coordinate of each grey decision-making critical grey decision-making, to adjust The colourity of the display screen to be regulated is saved,Wherein, according to the minimum gray value of the display screen to be regulated and the chromaticity coordinate and standard shows of critical grey decision-making Screen from minimum gray value to the reference chromaticity coordinate critical grey decision-making, calculate the display screen to be regulated respectively from minimum Grey decision-making to each grey decision-making between critical grey decision-making chromaticity coordinate, including：First chromaticity coordinate calculation procedure, sat for the first colourity in the reference chromaticity coordinate according to the conventional display The first chromaticity coordinate in the chromaticity coordinate of mark, the minimum gray value of the display screen to be regulated and critical grey decision-making, to calculate The display screen to be regulated is from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making；Second chromaticity coordinate calculation procedure, for according to the display screen to be regulated from minimum gray value to critical grey decision-making The first chromaticity coordinate of each grey decision-making, the first chromaticity coordinate and the second color in the reference chromaticity coordinate of the conventional display Coordinate is spent, to calculate the display screen to be regulated from minimum gray value to the second colourity of each grey decision-making critical grey decision-making Coordinate.
- 2. according to the method for claim 1, it is characterised in that following formula is used in the first chromaticity coordinate calculation procedure 1 calculates the display screen to be regulated from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making,Wherein, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiDescribed in expression Conventional display from the first color in the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N Spend coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iDescribed in expression Display screen to be regulated from the first colourity in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N Coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
- 3. according to the method for claim 2, it is characterised in that following formula is used in the second chromaticity coordinate calculation procedure 2 calculate the display screen to be regulated from minimum gray value to the second chromaticity coordinate of each grey decision-making critical grey decision-making,Wherein, dM=yM-xM, yMRepresent the second colourity in the minimum gray value M of conventional display reference chromaticity coordinate Coordinate；di=yi-xi, yiRepresent the conventional display from each grey decision-making i's minimum gray value M to critical grey decision-making N With reference to the second chromaticity coordinate in chromaticity coordinate；dN=yN-xN, yNRepresent the second chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；d'M=y'M-x'M, y 'MRepresent that the second colourity in the minimum gray value M of the display screen to be regulated chromaticity coordinate is sat Mark；d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each GTG minimum gray value M to critical grey decision-making N The second chromaticity coordinate in value i chromaticity coordinate；d'N=y'N-x'N, y 'NRepresent that the second colourity in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate is sat Mark.
- 4. according to the method in any one of claims 1 to 3, it is characterised in that also include：Optical parametric is selected to be located at the LCDs of median as the conventional display from multiple LCDs.
- A kind of 5. colourity adjusting means of LCDs, it is characterised in that including：Measurement module, for measuring display screen to be regulated in minimum gray value and the chromaticity coordinate of maximum gray value；Setup module, it is connected with the measurement module, for by the chromaticity coordinate of the critical grey decision-making of the display screen to be regulated It is arranged to the chromaticity coordinate of the maximum gray value；Chromaticity coordinate computing module, it is connected respectively with the measurement module and the setup module, for according to described to be regulated The minimum gray value of display screen and the chromaticity coordinate of critical grey decision-making and conventional display from minimum gray value to critical ash Reference chromaticity coordinate between rank value, calculates the display screen to be regulated from minimum gray value to critical grey decision-making respectively The chromaticity coordinate of each grey decision-making；AndColourity adjustment module, it is connected with the chromaticity coordinate computing module, for grey from minimum according to the display screen to be regulated The chromaticity coordinate for each grey decision-making that rank value is arrived between critical grey decision-making, to adjust the colourity of the display screen to be regulated,Wherein, the chromaticity coordinate computing module includes：First chromaticity coordinate computing module, sat for the first colourity in the reference chromaticity coordinate according to the conventional display The first chromaticity coordinate in the chromaticity coordinate of mark, the minimum gray value of the display screen to be regulated and critical grey decision-making, to calculate The display screen to be regulated is from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making；Second chromaticity coordinate computing module, it is connected with the first chromaticity coordinate computing module, for according to described to be regulated aobvious Display screen is from minimum gray value to the reference of the first chromaticity coordinate, the conventional display of each grey decision-making critical grey decision-making The first chromaticity coordinate and the second chromaticity coordinate in chromaticity coordinate, to calculate the display screen to be regulated from minimum gray value to facing Second chromaticity coordinate of each grey decision-making between boundary's grey decision-making.
- 6. device according to claim 5, it is characterised in that the first chromaticity coordinate computing module using following formula 1 come The display screen to be regulated is calculated from minimum gray value to the first chromaticity coordinate of each grey decision-making critical grey decision-making,Wherein, M is minimum gray value, and N is critical grey decision-making, M<i<N and be integer；xMRepresent the first chromaticity coordinate in the minimum gray value M of conventional display reference chromaticity coordinate, xiDescribed in expression Conventional display from the first color in the reference chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N Spend coordinate, xNRepresent the first chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；x’MRepresent the first chromaticity coordinate in the minimum gray value M of the display screen to be regulated chromaticity coordinate, x 'iDescribed in expression Display screen to be regulated from the first colourity in the chromaticity coordinate of each grey decision-making i minimum gray value M to critical grey decision-making N Coordinate, x 'NRepresent the first chromaticity coordinate in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate.
- 7. device according to claim 6, it is characterised in that the second chromaticity coordinate computing module using following formula 2 come The display screen to be regulated is calculated from minimum gray value to the second chromaticity coordinate of each grey decision-making critical grey decision-making,Wherein, dM=yM-xM, yMRepresent the second colourity in the minimum gray value M of conventional display reference chromaticity coordinate Coordinate；di=yi-xi, yiRepresent the conventional display from each grey decision-making i's minimum gray value M to critical grey decision-making N With reference to the second chromaticity coordinate in chromaticity coordinate；dN=yN-xN, yNRepresent the second chromaticity coordinate in the critical grey decision-making N of conventional display reference chromaticity coordinate；d'M=y'M-x'M, y 'MRepresent that the second colourity in the minimum gray value M of the display screen to be regulated chromaticity coordinate is sat Mark；d′i=y 'i-x′i, y 'iRepresent the display screen to be regulated from each GTG minimum gray value M to critical grey decision-making N The second chromaticity coordinate in value i chromaticity coordinate；d'N=y'N-x'N, y 'NRepresent that the second colourity in the critical grey decision-making N of the display screen to be regulated chromaticity coordinate is sat Mark.
- 8. the device according to any one of claim 5 to 7, it is characterised in that also include：Selecting module, it is connected with the chromaticity coordinate computing module, for selecting Optical Parametric numerical digit from multiple LCDs In median LCDs as the conventional display.
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