CN104464685A - Method and device for adjusting gray level transition and color of display device - Google Patents

Method and device for adjusting gray level transition and color of display device Download PDF

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CN104464685A
CN104464685A CN201410808896.6A CN201410808896A CN104464685A CN 104464685 A CN104464685 A CN 104464685A CN 201410808896 A CN201410808896 A CN 201410808896A CN 104464685 A CN104464685 A CN 104464685A
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target
brightness
current
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black
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CN104464685B (en
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陈子沣
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Tianma Microelectronics Co Ltd
Xiamen Tianma Microelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Xiamen Tianma Microelectronics Co Ltd
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Abstract

The invention discloses a method and device for adjusting gray level transition and color of a display device. The method includes the steps that when any debugging gray level is adjusted, preferably, the target chromaticity brightness, a target brightness coefficient group, the current brightness chromaticity and a current brightness coefficient group which correspond to the debugging gray level are acquired, an adjustment relative brightness group is calculated according to a current relative brightness group, the target brightness coefficient group and the current brightness coefficient group which correspond to the current chromaticity brightness, a preset database is searched so that a target set value group corresponding to the target relative brightness can be determined, the debugging gray level is adjusted through the target set value group, and therefore the purpose for adjusting gray level transition and color of the display device is achieved. The technical scheme does not need to be manually adjusted and production efficiency is improved; in addition, the preset database is searched so that the target set value group can be determined, time spent in adjusting gray level transition and color of the display device is further shortened, and production efficiency is improved.

Description

The adjustment GTG transition of display device and the method for color and device
Technical field
The present invention relates to display technique field, more specifically, relate to and a kind ofly adjust the GTG transition of display device and the method for color and device.
Background technology
Existing display device needs to adjust its GTG transition and color before dispatching from the factory, with the display effect making display device reach best.Existing method of adjustment has and adjusts manually, namely artificial rule of thumb and utilize some aids, adjust display device, this method of adjustment length consuming time, generally needs several tens minutes, and the production efficiency of the display device made reduces.
Summary of the invention
In view of this, the invention provides and a kind ofly adjust the GTG transition of display device and the method for color and device, to adjust the GTG transition of display device and color, reduce regulation time, improve production efficiency.
For achieving the above object, technical scheme provided by the invention is as follows:
Adjust the GTG transition of display device and a method for color, described display device comprises zero level GTG to m level GTG, and described zero level GTG to m level GTG comprises n debugging GTG, and the method adjusting described i-th grade of debugging GTG comprises:
S1: obtain presetting database, described presetting database comprises multiple different settings and multiple different relative brightness, each described settings are a corresponding described relative brightness separately; Obtain the target colorimetric brightness (x of described i-th grade of debugging GTG target, y target, Y target), the tristimulus values (X of black picture bLACK, Y bLACK,z bLACK) and eliminate the tristimulus values (X that black picture light leak affects rear red, green and blue picture rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE), calculate object brightness coefficient sets (r1, g1, b1);
S2: obtain current setpoint value group (R, G, B), searches the current relative brightness group (Tr, Tg, Tb) corresponding with described current setpoint value group (R, G, B) in described presetting database; Measure the current chroma brightness (x of described display device when described i-th grade of debugging GTG shows with current setpoint value group (R, G, B) current, y current, Y current), and calculate current brightness factor group (r2, g2, b2);
S3: calculating adjustment relative brightness group (Tr ', Tg ', Tb '), wherein, Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb; And search respectively in described presetting database and described adjustment relative brightness Tr ', the respective immediate described relative brightness Tr of Tg ', Tb ' ", Tg ", Tb ", with according to described immediate described relative brightness Tr ", Tg ", Tb " determine and described adjustment relative brightness Tr ', each self-corresponding contiguous settings R ' of Tg ', Tb ', G ', B ';
S4: judge that whether described contiguous settings group (R ', G ', B ') is through the measurement of described step S2, if so, then determines that described contiguous settings group (R ', G ', B ') is described target settings group (R target, G target, B target); If not, then described current setpoint value group (R, G, B) is reset to described contiguous settings group (R ', G ', B '), and return described step S2;
Wherein, m is more than or equal to n, and m, n are positive integer, (x target, y target, Y target) and (r1, g1, b1), (x current, y current, Y current) meet with (r2, g2, b2):
X = r X RED + g X GREEN + b X BLUE + X BLACK Y = r Y RED + g Y GREEN + b Y BLUE + Y BLACK Z = r Z RED + g Z GREEN + b Z BLUE + Z BLACK (formula one)
With
X = ( x / y ) * Y Z = ( ( 1 - x - y ) / y ) * Y (formula two)
(X, Y, tristimulus values during any colored picture that Z) can show for described display device, (r, g, b) correspondence is expressed as any luminance factor group of Red Green Blue, (x, y) refer to the value of xy in CIE1931-xyY standard colorimetric system, represent colourity, Y represents brightness.
Accordingly, present invention also offers and a kind ofly adjust the GTG transition of display device and the device of color, described display device comprises zero level GTG to m level GTG, and described zero level GTG to m level GTG comprises n debugging GTG, and described device comprises:
Chroma luminance acquisition module, for obtaining target colorimetric brightness (x corresponding to described i-th grade of GTG target, y target, Y target) and current chroma brightness (x current, y current, Y current);
Memory module, for storing presetting database, described database comprises multiple different settings and multiple different relative brightness, and each described settings are a corresponding described relative brightness separately;
Module is set, for arranging the current setpoint value group (R, G, B) be made up of multiple described settings, controls described display device and showing with current setpoint value group (R, G, B);
Data analysis module, for calculating described target colorimetric brightness (x target, y target, Y target) corresponding object brightness coefficient sets (r1, g1, b1), described current chroma brightness (x current, y current, Y current) corresponding current brightness factor group (r2, g2, b2), described current setpoint value group (R is searched, G, B) at described presetting database corresponding present intensity group (Tr, Tg, Tb), and calculate and find out contiguous settings group (R ', G ', B ');
Judge module, for judging whether described contiguous settings group (R ', G ', B ') was measured by described chroma luminance acquisition module;
Wherein, m is more than or equal to n, and m, n are positive integer.
Compared to prior art, technical scheme provided by the invention at least has one of following advantage:
Provided by the inventionly a kind ofly adjust the GTG transition of display device and the method for color and device, when any debugging GTG adjusts, the acquisition target colorimetric brightness that first-selected debugging GTG is corresponding, object brightness coefficient sets, present intensity colourity and current brightness factor group, the current relative brightness group corresponding according to current chroma brightness, object brightness coefficient sets and current brightness factor group, calculate adjustment relative brightness group, and then search in presetting database and determine the target settings group corresponding with target relative brightness, and then by target settings group, debugging GTG is adjusted, to reach the adjustment GTG transition of display device and the object of color.Technical scheme provided by the invention, without the need to artificial adjustment, improves production efficiency; In addition, adopt the mode determination target settings group of searching presetting database, reduce further the adjustment GTG transition of display device and the time of color, improve production efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of process flow diagram adjusting the GTG transition of display device and the method for color that Fig. 1 provides for the embodiment of the present application;
A kind of method flow diagram setting up presetting database that Fig. 2 provides for the embodiment of the present application;
A kind of process flow diagram obtaining the method for i-th grade of debugging GTG target colorimetric brightness that Fig. 3 a provides for the embodiment of the present application;
The schematic diagram of the one calculating Lmin ' and Lmax ' that Fig. 3 b provides for the embodiment of the present application;
A kind of schematic diagram calculating object brightness that Fig. 3 c provides for the embodiment of the present application;
A kind of method flow diagram calculating object brightness coefficient sets that Fig. 4 provides for the embodiment of the present application;
A kind of method flow diagram calculating current brightness factor group that Fig. 5 provides for the embodiment of the present application;
A kind of process flow diagram searching the method for contiguous settings in presetting database that Fig. 6 provides for the embodiment of the present application;
A kind of structural representation adjusting the GTG transition of display device and the device of color that Fig. 7 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As described in background, existing have the GTG transition of display device and the method for adjustment of color adjust manually, namely artificial rule of thumb and utilize some aids, display device is adjusted, the method length consuming time, generally need several tens minutes, the production efficiency of the display device made reduces.
Based on this, the embodiment of the present application provides and a kind ofly adjusts the GTG transition of display device and the method for color, shown in figure 1, for a kind of process flow diagram adjusting the GTG transition of display device and the method for color that the embodiment of the present application provides, wherein, display device comprises zero level GTG to m level GTG, and zero level GTG to m level GTG comprises n debugging GTG, and the method adjusting i-th grade of debugging GTG comprises:
S1: obtain presetting database, presetting database comprises multiple different settings and multiple different relative brightness, each settings are a corresponding relative brightness separately; Obtain the target colorimetric brightness (x of i-th grade of debugging GTG target, y target, Y target), the tristimulus values (X of black picture bLACK, Y bLACK,z bLACK) and eliminate the tristimulus values (X that black picture light leak affects rear red, green and blue picture rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE), calculate object brightness coefficient sets (r1, g1, b1);
S2: obtain current setpoint value group (R, G, B), searches the current relative brightness group (Tr, Tg, Tb) corresponding with current setpoint value group (R, G, B) in presetting database; Measure the current chroma brightness (x of display device when i-th grade of debugging GTG shows with current setpoint value group (R, G, B) current, y current, Y current), and calculate current brightness factor group (r2, g2, b2);
S3: calculating adjustment relative brightness group (Tr ', Tg ', Tb '), wherein, Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb; And search respectively in presetting database and adjust relative brightness Tr ', Tg ', the respective immediate relative brightness Tr of Tb ' ", Tg ", Tb ", with according to immediate relative brightness Tr ", Tg ", Tb " determine and adjustment relative brightness Tr ', each self-corresponding contiguous settings R ' of Tg ', Tb ', G ', B ';
S4: judge that whether contiguous settings group (R ', G ', B ') is through the measurement of step S2, if so, then determines that contiguous settings group (R ', G ', B ') is target settings group (R target, G target, B target); If not, then current setpoint value group (R, G, B) is reset to contiguous settings group (R ', G ', B '), and return step S2;
Wherein, m is more than or equal to n, and m, n are positive integer, and i is any value in n, (x target, y target, Y target) and (r1, g1, b1), (x current, y current, Y current) meet with (r2, g2, b2):
X = r X RED + g X GREEN + b X BLUE + X BLACK Y = r Y RED + g Y GREEN + b Y BLUE + Y BLACK Z = r Z RED + g Z GREEN + b Z BLUE + Z BLACK (formula one)
With
X = ( x / y ) * Y Z = ( ( 1 - x - y ) / y ) * Y (formula two)
(X, Y, tristimulus values during any colored picture that Z) can show for display device, (r, g, b) correspondence is expressed as any luminance factor group of Red Green Blue, (x, y) refer to the value of xy in CIE1931-xyY standard colorimetric system, represent colourity, Y represents brightness.
It should be noted that, tristimulus values is three kinds of light X of supposition, and Y, Z are to the quantity of stimulus of human eye, theoretical according to the three primary colors of poplar-Helmholtz, and feeling of look is the synthesis result stimulated by three kinds of primitive color lights.In addition, the brightness of regulation X and Z is that 0, XZ line is called without brightness line (alychne), only represent colourity, do not have brightness, but namely Y represents colourity, also represent brightness without each point on brightness line.Like this, when calculating colourity with X, Y, Z, because Y itself represents brightness again, just make brightness calculation more for convenience.Namely, under colourity (x, y), tristimulus values (X, Y, Z) can be expressed as (x/y*Y, Y, ((1-x-y)/y) * Y).
Concrete, n debugging GTG is the zero level GTG of display device to the part in m level GTG, in display device course of normal operation, display device all corresponds to the combination display effect of red sub-pixel, green sub-pixels and blue subpixels in the display effect of any debugging GTG, namely by providing corresponding grayscale signal to the sub-pixel of three kinds of colors, combine after making three sub pixel displays; And, the grayscale signal of n each self-corresponding red sub-pixel of debugging GTG, green sub-pixels and blue subpixels, by some default operation transform means, the grayscale signal of zero level GTG to each self-corresponding red sub-pixel of m level GTG, green sub-pixels and blue subpixels can be transformed to, and then can be respective target gray scale signal by adjusting the grayscale signal of debugging GTG corresponding red sub-pixel, green sub-pixels and blue subpixels, to adjust GTG transition and the color of display device.That is,
Debugging GTG after adjustment in the embodiment of the present application, it answers corresponding settings, these settings answer a corresponding grayscale signal, after determining to debug the settings of corresponding red sub-pixel, green sub-pixels and the blue subpixels of GTG and being respective target settings, to obtain corresponding grayscale signal, and then adjust GTG transition and the color of display device, wherein, by adjustment debugging GTG, and then the mode of all GTGs of adjustment display device, effectively can reduce the adjustment GTG transition of display device and the time of color, improve the efficiency of adjustment.Illustrate,
If display device comprises zero level GTG to the 16 grade of GTG, wherein, for this display device, the grayscale signal first presetting corresponding redness, green and blue three sub pixels of zero level GTG is to the 16 grade of redness that GTG is corresponding, relation between green and the grayscale signal of blue three sub pixels.Zero level GTG is then set, the 6th grade of GTG, the tenth one-level GTG and the 16 grade of GTG are debugging GTG, and the grayscale signal debugging redness corresponding to GTG, green and blue three sub pixels is adjusted to respective target gray scale signal, then according to the relation between debugging GTG and zero level GTG to the 16 grade of GTG, the grayscale signal of corresponding for debugging GTG redness, green and blue three sub pixels is transformed to the grayscale signal of redness corresponding to all GTGs, green and blue three sub pixels, to adjust GTG transition and the color of display device.
In addition, in the production run of display device, be batch production, therefore, when carrying out the adjustment of GTG transition and color to the display device of same model, the presetting database that in the display device according to this model, any display device is set up all can be adopted to adjust.
It should be noted that, for grayscale signal, it can be gray scale voltage, can be also electric current, needs to judge according to the type of real device.If during display device liquid crystal real device, grayscale signal is gray scale voltage; If during real device organic light-emitting display device, grayscale signal corresponds to the electric current being applied to light emitting diode.
Optionally, shown in figure 2, be a kind of method flow diagram setting up presetting database that the embodiment of the present application provides, wherein, the embodiment of the present application can set up presetting database according to the following steps:
S21: obtain multiple settings that i-th grade of debugging GTG is corresponding, and measure the brightness of display device under each settings;
S22: obtain the minimum brightness Lmin in each self-corresponding brightness of multiple settings and high-high brightness Lmax;
The relative brightness Lj of S23: settings j relatively=(Lj-Lmin)/(Lmax-Lmin), wherein Lj is brightness corresponding to any settings.
With reference to shown in following table, the relation data content for settings-relative brightness corresponding to the sub-pixel debugging any color corresponding to GTG in preset data database data:
Table 1
Wherein, settings are hexadecimal data, its except with relative brightness for except, also corresponding with grayscale signal, illustrate, when searching presetting database, if determine, the relative brightness of the sub-pixel of m level GTG is 1, then the target settings of this sub-pixel are 00h, and the grayscale signal provided for this sub-pixel is corresponding preset gray scale signal, namely be preset gray scale voltage in liquid crystal indicator, and for presetting the electric current being applied to light emitting diode in organic light-emitting display device.
It should be noted that, for the data content of upper table, three covers are had in presetting database, namely red, green and blue three sub pixels equal corresponding are put to the data of table, further, the quantity of the debugging GTG in any sets of data is identical with grade, but the quantity of debugging settings corresponding to GTG can be identical, also can be different, concrete restriction is not done to this; And, for the data content of any color sub-pixels, its settings need the multiple grayscale voltages corresponding according to each debugging GTG to arrange, namely under the grey order conditions of debugging, its each settings are a corresponding grayscale voltage all separately, and the brightness of correspondence under this grayscale voltage; In addition, be example for the representation of the settings in table 1 and the concrete data of relative brightness, in actual applications, settings can adopt hexadecimal representation, also can adopt other representations such as system or numeral, equally concrete restriction is not done to this.For the mode of the relative brightness stored in the presetting database that the embodiment of the present application provides, compared with storing the mode of simple brightness data, the mode storing relative brightness can ensure when adjusting a collection of display device of same model more applicable.
In foregoing, obtain the tristimulus values (X of black picture bLACK, Y bLACK,z bLACK), and eliminate the tristimulus values (X of the rear red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) step be:
S31: measure described display device and show the tristimulus values of black picture for (X bLACK, Y bLACK, Z bLACK), the tristimulus values measured when described display device shows red, green and blue picture is respectively respectively (X rED', Y rED', Z rED'), (X gREEN', Y gREEN', Z gREEN') and (X bLUE', Y bLUE', Z bLUE');
S32: each expression amount of the tristimulus values of described display device red, green and blue picture is deducted respectively each expression amount that described display device shows the tristimulus values of black picture, the tristimulus values (X of red, green and blue picture after the black picture light leak that is eliminated impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE),
X RED＝X RED’-X BLACK，Y RED＝Y RED’-Y BLACK，Z RED＝Z RED’-Z BLACK；
X GREEN＝X GREEN’-X BLACK，Y GREEN＝Y GREEN’-Y BLACK，Z GREEN＝Z GREEN’-Z BLACK；
X BLUE＝X BLUE’-X BLACK，Y RED＝Y BLUE’-Y BLACK，Z BLUE＝Z BLUE’-Z BLACK。
Shown in figure 3a, for a kind of process flow diagram obtaining the method for i-th grade of debugging GTG target colorimetric brightness that the embodiment of the present application provides, shown in figure 3b, for the schematic diagram of the one calculating Lmin ' and Lmax ' that the embodiment of the present application provides, and, shown in figure 3c, be a kind of schematic diagram calculating object brightness that the embodiment of the present application provides, wherein, i-th grade of debugging GTG target colorimetric brightness (x is obtained target, y target, Y target) comprising:
S41: obtain target colorimetric (x target, y target);
Wherein, target colorimetric (x target, y target) being artificial to arrange, the brightness of the sub-pixel of three of display device kind of color can be carried out ratio and adjust by it, to obtain the color that display device is partial to when display frame.Optionally, target colorimetric (x target, y target) be the colourity of white balance picture under each debugging GTG.
S42: tristimulus values when measuring white picture is (X wHITE, Y wHITE, Z wHITE);
S43: by the tristimulus values (X of white picture wHITE, Y wHITE, Z wHITE) substitute into formula one and try to achieve high-high brightness coefficient sets corresponding to three primary colors for (r=r max, g=g max, b=b max), by the tristimulus values (X of black picture bLACK, Y bLACK,z bLACK) substitute into formula one and try to achieve minimum brightness coefficient sets corresponding to three primary colors for (r=0, g=0, b=0);
S44: by target colorimetric (x target, y target) and high-high brightness coefficient sets in any value substitute into formula two and formula one, the minimum value of the Y tried to achieve is m level gray-scale intensity Lmax '; And, by target colorimetric (x target, y target) and minimum brightness coefficient sets in any value and formula two substitute into formula one, the maximal value of the Y tried to achieve is zero level gray-scale intensity Lmin ';
S45: according to Y target=(i/m) γ* (Lmax '-Lmin ')+Lmin ', reach target colorimetric (x to calculate display device target, y target) time i-th grade of object brightness Y corresponding to debugging GTG target, namely obtain target colorimetric brightness (x target, y target, Y target), wherein, i is the grade of debugging GTG, and γ is the default gamma value of display device.
As shown in the above, the target colorimetric (x determining that the display device needs when display frame after adjusting reach first is needed target, y target), then according to the minimum gray brightness Lmin ', the maximum gray brightness Lmax ' that calculate and default gamma value γ and the grade i debugging GTG, by colorimetry operation transform, to calculate object brightness corresponding to debugging GTG, i.e. brightness ideally.Illustrate,
If display device comprises 256 grade GTGs, namely zero level GTG is to the 255th grade of GTG, wherein, the gamma value of display device is the brightness of the 2.2,255th grade of GTG is Lmax ', and the brightness of zero level GTG is Lmin ', wherein, the object brightness calculating the 128th grade of GTG is:
Y target=(128/255) 2.2* (Lmax '-Lmin ')+Lmin '.
As shown in the above, before searching presetting database, need reference target luminance factor group (r1, g1, b1) to close current brightness factor group (r2, g2, b2), meter is adjusted relative brightness (Tr ', Tg ', Tb ').Shown in figure 4, be a kind of method flow diagram calculating object brightness coefficient sets that the embodiment of the present application provides, wherein, calculate object brightness coefficient sets (r1, g1, b1) according to following steps:
S61: calculate target tristimulus values (X target, Y target, Z target), that is:
By target colorimetric brightness (x target, y target, Y target), substitute into formula two and obtain
Obtain target colorimetric brightness (x target, y target, Y target) corresponding target tristimulus values (X target, Y target, Z target) be ((x target/ y target) * Y target, Y target, (1-x target-y target)/y target* Y target);
S62: by the tristimulus values (X of black picture bLACK, Y bLACK, Z bLACK), and eliminate the tristimulus values (X of the rear red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) and target tristimulus values (X target, Y target, Z target) substitute into formula one, calculate object brightness coefficient sets (r1, g1, b1).
In addition, shown in figure 5, be a kind of method flow diagram calculating current brightness factor group that the embodiment of the present application provides, wherein, calculate current brightness factor group (r2, g2, b2) according to following steps:
S71: obtain current setpoint value (R, G, B), search in presetting database and current setpoint value (R, G, B) corresponding current relative brightness group (Tr, Tg, Tb), display device is set to measure display device at i-th grade of debugging GTG with current setpoint value group (R, G, B) display;
S72: calculate current tristimulus values (X current, Y it is current,z current), that is:
Measure current chroma brightness (x current, y current, Y current), substitute into formula two and obtain
Obtain the current tristimulus values (X that current setpoint value group (R, G, B) is corresponding current, Y it is current,z current) be ((x current/ y current) * Y current, Y current, (1-x current-y current)/y current* Y current);
S73: by the tristimulus values (X of black picture bLACK, Y bLACK,z bLACK), and eliminate the tristimulus values (X of the rear red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) and current tristimulus values (X current, Y it is current,z current) substitute into formula one, calculate current brightness factor group (r2, g2, b2).
Search in presetting database and adjust relative brightness Tr ', Tg ', the respective immediate relative brightness Tr of Tb ' ", Tg ", Tb " time; can by calculating the absolute value of multiple difference; then by method that multiple absolute value compares; to obtain immediate relative brightness Tr ", Tg ", Tb ", and then determine to close on settings.Concrete, shown in figure 6, for a kind of process flow diagram searching the method for contiguous settings in presetting database that the embodiment of the present application provides, wherein, according to following steps calculate adjustment relative brightness group (Tr ', Tg ', Tb '), search and adjust relative brightness Tr ', Tg ', the respective immediate relative brightness Tr of Tb ' ", Tg ", Tb " and with immediate relative brightness Tr ", Tg ", Tb " corresponding contiguous settings R ', G ', B ':
S81: calculating adjustment relative brightness group (Tr ', Tg ', Tb '), wherein Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb;
S82: the relative brightness Lj calculating settings j in presetting database respectively relativelywith Tr ', Tg in adjustment relative brightness group (Tr ', Tg ', Tb ') ', the absolute value of Tb ' difference;
S83: relative brightness Lj that will be minimum with the absolute value of adjustment relative brightness Tr ' difference relativelybe recorded as the immediate relative brightness Tr of adjustment relative brightness Tr ' ", relative brightness Lj that will be minimum with the absolute value of adjustment relative brightness Tg ' difference relativelybe recorded as the immediate relative brightness Tg of adjustment relative brightness Tg ' ", relative brightness Lj that will be minimum with the absolute value of adjustment relative brightness Tb ' difference relativelybe recorded as the immediate relative brightness Tb of adjustment relative brightness Tb ' ";
S8l: search immediate relative brightness Tr " the contiguous settings R ' of correspondence in presetting database; search immediate relative brightness Tg " the contiguous settings G ' of correspondence in presetting database, search immediate relative brightness Tb " contiguous settings B ' corresponding in presetting database, record is close to settings group (R ', G ', B ').
It should be noted that, in the above embodiments of the present application, although adopt the mode of tristimulus values to carry out transform operation to obtain corresponding data, but, the method that not representing the application provides is confined to adopt tristimulus values to carry out operation transform, the method that the application provides can also adopt the operation transform of other colorimetries to obtain the data needed, and does not do concrete restriction to this application.
By the data exemplified below, the GTG transition of adjustment display device that further description the embodiment of the present application provides and the method for color, wherein, display device comprises zero level GTG to the 255th grade of GTG, 255th grade of GTG is described as a debugging GTG by the embodiment of the present application, shown in reference table 2, for presetting database partial data, for convenience of description, wherein, red, green and that blue subpixels is corresponding settings are decided to be 0 to 127, and the relative brightness exemplified the corresponding settings of all colours sub-pixel is all identical:
Table 2
Then, determine that the process of the target settings group of the 255th grade of GTG is as follows:
First, the target colorimetric brightness (x of the 255th grade of GTG is determined target, y target, Y target):
The tristimulus values measured when display device shows white and black picture is respectively respectively (X wHITE, Y wHITE, Z wHITE)=(420.9295,441.9211,555.9272) and (X bLACK, Y bLACK, Z bLACK)=(0.451026,0.40401,0.977368), and it is (X that the tristimulus values of red, green and blue picture is eliminated the impact of black picture light leak rear rED, Y rED, Z rED)=(153.0896,84.08862,9.193421), (X gREEN, Y gREEN, Z gREEN)=(172.8268,324.0919,47.52904) and (X bLUE, Y bLUE, Z bLUE)=(104.4037,34.19821,554.3942), the relational expression of the chroma luminance that display device can show is obtained with this:
X = r X RED + g X GREEN + b X BLUE + X BLACK Y = r Y RED + g Y GREEN + b Y BLUE + Y BLACK Z = r Z RED + g Z GREEN + b Z BLUE + Z BLACK (formula one)
By (X, Y, Z)=(X wHITE, Y wHITE, Z wHITE)=(420.9295,441.9211,555.9272) substitute into formula one and solve high-high brightness coefficient sets (r corresponding to three primary colors max, g max, b max)=(0.996975,1.012004,0.902879), the minimum brightness coefficient sets that three primary colors are corresponding is (0,0,0);
Wherein, the relational expression of tristimulus values (X, Y, Z) and colourity (x, y) is:
X = ( x / y ) * Y Z = ( ( 1 - x - y ) / y ) * Y (formula two)
Wherein, goal-selling colourity (x target, y target)=(0.30,0.31);
In conjunction with formula one, formula two and target colorimetric: work as r=r maxwhen=0.996975, g, b and Y are unknown number, solve Y=416.0884; Work as g=g maxwhen=1.012004, r, b, Y are unknown number, solve Y=449.0444; Work as b=b maxwhen=0.902879, r, g, Y are that unknown number solves Y=441.6944, wherein, work as r=r maxwhen=0.996975, the Y value solved is minimum, is the 255th grade of gray-scale intensity.In like manner, trying to achieve zero level gray-scale intensity is Y=0.821156.
Target colorimetric brightness (x corresponding to debugging GTG the 255th grade of GTG is calculated by above-mentioned target, y target, Y target)=(0.30,0.31,416.0884).
Secondly, the target settings group (R of the 255th grade of GTG is determined target, G target, B target):
S100: according to (x target, y target, Y target)=(0.30,0.31,416.0884), formula one and formula two, try to achieve trichromatic object brightness coefficient sets (r1, g1, b1)=(0.996975287,0.937659981,0.850430949).
S200: exemplify and control display device with the current setpoint value (R, G, B) of the 255th grade of GTG=(0,0,0) display, record the current chroma brightness (x of display device current, y current, Y current)=(0.296680391,0.311475754,441.9211426), according to current chroma brightness, formula one and formula two, try to achieve trichromatic current brightness factor group (r2, g2, b2)=(0.996975287,1.012004296,0.902878612).
S300: search in presetting database and current setpoint value group (R, G, B)=(0, 0, 0) corresponding current relative brightness group (Tr, Tg, Tb)=(1, 1, 1), then by described current relative brightness group (Tr, Tg, Tb) corresponding to described current brightness factor group (r2, g2, b2), be multiplied by described object brightness coefficient sets (r1 again, g1, b1), be adjusted relative brightness group (Tr ', Tg ', Tb ')=(1, 0.92653755, 0.941910615), namely, Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb.
S400: search in presetting database with adjust relative brightness group (Tr ', Tg ', Tb ') in immediate relative brightness group (Tr ", Tg ", Tb ")=(1, 0.926804956, 0.941883047), corresponding contiguous settings group (R ', G ', B ')=(0, 21, 18), record this vicinity settings group (0, 21, 18), and judge that this vicinity settings group was not measured in step s 200, then by current setpoint value group (0, 0, 0) contiguous settings group (0 is reset to, 21, 18), and return in step S200, namely,
Control display device with current setpoint value group (0,21,18) show, recording chroma luminance is (0.3002,0.3101,416.0988) current brightness factor group (0.999108341, is obtained, 0.937257259,0.849433572), this current setpoint value group (0,21,18) corresponding relative brightness group is (1,, and then to be adjusted relative brightness group be (0.997865043 0.926804956,0.941883047), 0.927203186,0.942988975); Searching with adjusting the immediate relative brightness group of relative brightness group in presetting database is (0.998622368,0.926804956,0.941883047), corresponding contiguous settings group is (1,21,18), record this renewal settings group (1,, and judge that this vicinity settings group was not measured in step s 200 21,18), then by current setpoint value group (0,21,18) contiguous settings group (1,21 is reset to, 18), and return in step S200, namely
Control display device with current setpoint value group (1,21,18) show, recording chroma luminance is (0.3001,0.3101,416.0858), obtaining current brightness factor group is (0.99764892,0.937572685,0.849641639), this current setpoint value group (1,21,18) corresponding relative brightness group is (0.998622368,, and then to be adjusted relative brightness group be (0.997948078 0.926804956,0.941883047), 0.926891249,0.942758048); Search in presetting database and adjust the immediate relative brightness group of relative brightness group for (0.998622368,0.926804956,0.941883047), corresponding contiguous settings group is (1,21,18) this renewal settings group (1, is recorded, 21,18), and judge that this vicinity settings group was measured in step s 200, then with this contiguous settings group (1,21,18) be target settings group (R target, G target, B target).
In addition, the embodiment of the present application additionally provides and a kind ofly adjusts the GTG transition of display device and the device of color, shown in figure 7, for a kind of structural representation adjusting the GTG transition of display device and the device of color that the embodiment of the present application provides, wherein, display device comprises zero level GTG to m level GTG, and zero level GTG to m level GTG comprises n debugging GTG, and device comprises:
Chroma luminance acquisition module 100, for obtaining target colorimetric brightness (x corresponding to i-th grade of GTG target, y target, Y target) and current chroma brightness (x current, y current, Y current);
Memory module 200, for storing presetting database, database comprises multiple different settings and multiple different relative brightness, and each settings are a corresponding relative brightness separately;
Module 300 being set, for arranging the current setpoint value group (R, G, B) be made up of multiple settings, controlling display device with current setpoint value group (R, G, B) display, so that chroma luminance acquisition module obtains current chroma brightness (x current, y current, Y current);
Data analysis module 400, for calculating target colorimetric brightness (x target, y target, Y target) corresponding object brightness coefficient sets (r1, g1, b1), current chroma brightness (x current, y current, Y current) corresponding current brightness factor group (r2, g2, b2) current setpoint value group (R, is searched, G, B) at presetting database corresponding current relative brightness group (Tr, Tg, Tb), and calculate and find out contiguous settings group (R ', G ', B ');
Judge module 500, for judging whether contiguous settings group (R ', G ', B ') was measured by chroma luminance acquisition module, if measured, then determined that this vicinity settings group (R ', G ', B ') was target settings group (R target, G target, B target); If do not measure, then by arranging module reset current setpoint value group (R, G, B) for contiguous settings group (R ', G ', B ');
Wherein, m is more than or equal to n, and m, n are positive integer.
Concrete, in presetting database, all corresponding relative brightness of each settings, when searching data in presetting database, data analysis module is being searched in data procedures, and its search direction is two-way.Namely data analysis module searches corresponding relative brightness by settings, or, search corresponding settings by relative brightness.
Corresponding with the GTG transition of the adjustment display device that above-described embodiment provides and the method for color, what the embodiment of the present application provided arrange module also can arrange initial setting group (R0, G0, B0), and control display device with current setpoint value group (R0, G0, B0) display.Namely, before first time calculates adjustment relative brightness group, need the current chroma brightness of measuring display device, the embodiment of the present application is current setpoint value group by arranging module installation display device in the initial setting group of the original state of the i-th GTG, control display device shows, to measure its current chroma brightness.
In addition, data analysis module also can according to target factor group (r1, g1, b1), current coefficient group (r2, g2, b2) and the present intensity group (Tr, the Tg that search, Tb) adjustment relative brightness group (Tr ', Tg ', Tb ') is calculated.
Data analysis module also can search in presetting database with adjustment relative brightness group (Tr ', Tg ', Tb ') immediate relative brightness (Tr "; Tg ", Tb ") and immediate relative brightness group (Tr ", Tg ", Tb ") corresponding contiguous settings group (R ', G ', B ').
As shown in the above, Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb, calculate adjustment relative brightness group (Tr ', Tg ', Tb ') after, search respectively in presetting database and adjust relative brightness Tr ', Tg ', the respective immediate relative brightness Tr of Tb ' ", Tg ", Tb "; with according to immediate relative brightness Tr ", Tg ", Tb " determine and adjustment relative brightness Tr ', each self-corresponding contiguous settings R ' of Tg ', Tb ', G ', B ', and then obtain contiguous settings group (R ', G ', B ')
What the embodiment of the present application provided a kind ofly adjusts the GTG transition of display device and the method for color and device, when any debugging GTG adjusts, the acquisition target colorimetric brightness that first-selected debugging GTG is corresponding, object brightness coefficient sets, present intensity colourity and current brightness factor group, the current relative brightness group corresponding according to current chroma brightness, object brightness coefficient sets and current brightness factor group, calculate adjustment relative brightness group, and then search in presetting database and determine the target settings group corresponding with target relative brightness, and then by target settings group, debugging GTG is adjusted, to reach the adjustment GTG transition of display device and the object of color.The technical scheme that the embodiment of the present application provides, without the need to artificial adjustment, improves production efficiency; In addition, adopt the mode determination target settings group of searching presetting database, reduce further the adjustment GTG transition of display device and the time of color, improve production efficiency.

Claims (13)

1. one kind adjusts the GTG transition of display device and the method for color, it is characterized in that, described display device comprises zero level GTG to m level GTG, and described zero level GTG to m level GTG comprises n debugging GTG, and the method adjusting described i-th grade of debugging GTG comprises:
S1: obtain presetting database, described presetting database comprises multiple different settings and multiple different relative brightness, each described settings are a corresponding described relative brightness separately; Obtain the target colorimetric brightness (x of described i-th grade of debugging GTG target, y target, Y target), the tristimulus values (X of black picture bLACK, Y bLACK, Z bLACK) and eliminate the tristimulus values (X that black picture light leak affects rear red, green and blue picture rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE), calculate object brightness coefficient sets (r1, g1, b1);
S2: obtain current setpoint value group (R, G, B), searches the current relative brightness group (Tr, Tg, Tb) corresponding with described current setpoint value group (R, G, B) in described presetting database; Measure the current chroma brightness (x of described display device when described i-th grade of debugging GTG shows with current setpoint value group (R, G, B) current, y current, Y current), and calculate current brightness factor group (r2, g2, b2);
S3: calculating adjustment relative brightness group (Tr ', Tg ', Tb '), wherein, Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb; And search respectively in described presetting database and described adjustment relative brightness Tr ', the respective immediate described relative brightness Tr of Tg ', Tb ' ", Tg ", Tb ", with according to described immediate described relative brightness Tr ", Tg ", Tb " determine and described adjustment relative brightness Tr ', each self-corresponding contiguous settings R ' of Tg ', Tb ', G ', B ';
S4: judge that whether described contiguous settings group (R ', G ', B ') is through the measurement of described step S2, if so, then determines that described contiguous settings group (R ', G ', B ') is described target settings group (R target, G target, B target); If not, then described current setpoint value group (R, G, B) is reset to described contiguous settings group (R ', G ', B '), and return described step S2;
Wherein, m is more than or equal to n, and m, n are positive integer, (x target, y target, Y target) and (r1, g1, b1), (x current, y current, Y current) meet with (r2, g2, b2):
X = r X RED + g X GREEN + b X BLUE + X BLACK Y = r Y RED + g Y GREEN + b Y BLUE + Y BLACK Z = r Z RED + g Z GREEN + b Z BLUE + Z BLACK (formula one)
With
X = ( x / y ) * Y Z = ( ( 1 - x - y ) / y ) * Y (formula two)
(X, Y, tristimulus values during any colored picture that Z) can show for described display device, (r, g, b) correspondence is expressed as any luminance factor group of Red Green Blue, (x, y) refer to the value of xy in CIE1931-xyY standard colorimetric system, represent colourity, Y represents brightness.
2. the GTG transition of adjustment display device according to claim 1 and the method for color, is characterized in that, set up described presetting database according to the following steps:
S21: obtain multiple settings that described i-th grade of debugging GTG is corresponding, and measure the brightness of described display device under each described settings;
S22: obtain the minimum brightness Lmin in each self-corresponding brightness of described multiple settings and high-high brightness Lmax;
The relative brightness Lj of S23: described settings j relatively=(Lj-Lmin)/(Lmax-Lmin), wherein Lj is brightness corresponding to settings described in any.
3. the GTG transition of adjustment display device according to claim 2 and the method for color, is characterized in that, obtains the tristimulus values (X of black picture bLACK, Y bLACK, Z bLACK), and eliminate the tristimulus values (X of the rear red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) step be:
S31: measure described display device and show the tristimulus values of black picture for (X bLACK, Y bLACK, Z bLACK), the tristimulus values measured when described display device shows red, green and blue picture is respectively respectively (X rED', Y rED', Z rED'), (X gREEN', Y gREEN', Z gREEN') and (X bLUE', Y bLUE', Z bLUE');
S32: each expression amount of the tristimulus values of described display device red, green and blue picture is deducted respectively each expression amount that described display device shows the tristimulus values of black picture, the tristimulus values (X of red, green and blue picture after the black picture light leak that is eliminated impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE),
X RED＝X RED’-X BLACK，Y RED＝Y RED’-Y BLACK，Z RED＝Z RED’-Z BLACK；
X GREEN＝X GREEN’-X BLACK，Y GREEN＝Y GREEN’-Y BLACK，Z GREEN＝Z GREEN’-Z BLACK；
X BLUE＝X BLUE’-X BLACK，Y RED＝Y BLUE’-Y BLACK，Z BLUE＝Z BLUE’-Z BLACK。
4. the GTG transition of adjustment display device according to claim 3 and the method for color, is characterized in that, obtains the target colorimetric brightness (x of described i-th grade of debugging GTG target, y target, Y target) comprising:
S41: obtain target colorimetric (x target, y target);
S42: tristimulus values when measuring white picture is (X wHITE, Y wHITE, Z wHITE);
S43: by the tristimulus values (X of described white picture wHITE, Y wHITE, Z wHITE) substitute into described formula one and try to achieve high-high brightness coefficient sets corresponding to described three primary colors for (r=r max, g=g max, b=b max), by the tristimulus values (X of described black picture bLACK, Y bLACK, Z bLACK) substitute into described formula one and try to achieve minimum brightness coefficient sets corresponding to described three primary colors for (r=0, g=0, b=0);
S44: by described target colorimetric (x target, y target) and described high-high brightness coefficient sets in any value substitute into described formula two and described formula one, the minimum value of the Y tried to achieve is m level gray-scale intensity Lmax '; And, by described target colorimetric (x target, y target) and described minimum brightness coefficient sets in any value and described formula two substitute into described formula one, the maximal value of the Y tried to achieve is zero level gray-scale intensity Lmin ';
S45: according to Y target=(i/m) γ* (Lmax '-Lmin ')+Lmin ', reach described target colorimetric (x to calculate described display device target, y target) time described in i-th grade of object brightness Y corresponding to debugging GTG target, wherein, i is the grade of described debugging GTG, and γ is the default gamma value of described display device.
5. the GTG transition of adjustment display device according to claim 4 and the method for color, is characterized in that, described target colorimetric (x target, y target) be the colourity of white balance picture under described i-th grade of debugging GTG.
6. the GTG transition of adjustment display device according to claim 4 and the method for color, is characterized in that, calculates described object brightness coefficient sets (r1, g1, b1) according to following steps:
S61: by described target colorimetric brightness (x target, y target, Y target), substitute into formula two and obtain
Obtain described target colorimetric brightness (x target, y target, Y target) corresponding target tristimulus values (X target, Y target, Z target) be ((x target/ y target) * Y target, Y target, (1-x target-y target)/y target* Y target);
S62: by the tristimulus values (X of described black picture bLACK, Y bLACK, Z bLACK), and eliminate the tristimulus values (X of the rear described red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) and described target tristimulus values (X target, Y target, Z target) substitute into formula one, calculate described object brightness coefficient sets (r1, g1, b1).
7. the GTG transition of adjustment display device according to claim 6 and the method for color, is characterized in that, calculates current brightness factor group (r2, g2, b2) according to following steps:
S71: obtain described current setpoint value (R, G, B), search in described presetting database and described current setpoint value (R, G, B) corresponding described current relative brightness group (Tr, Tg, Tb), described display device is set to measure described display device at described i-th grade of debugging GTG with described current setpoint value group (R, G, B) display;
S72: measure described current chroma brightness (x current, y current, Y current), substitute into formula two and obtain
Obtain the current tristimulus values (X that described current setpoint value group (R, G, B) is corresponding current, Y current, Z current) be ((x current/ y current) * Y current, Y current, (1-x current-y current)/y current* Y current);
S73: by the tristimulus values (X of described black picture bLACK, Y bLACK, Z bLACK), and eliminate the tristimulus values (X of the rear described red, green and blue picture of black picture light leak impact rED, Y rED, Z rED), (X gREEN, Y gREEN, Z gREEN) and (X bLUE, Y bLUE, Z bLUE) and described current tristimulus values (X current, Y when before, Z current) substitute into formula one, calculate described current brightness factor group (r2, g2, b2).
8. the GTG transition of adjustment display device according to claim 7 and the method for color, it is characterized in that, according to following steps calculate described adjustment relative brightness group (Tr ', Tg ', Tb '), search and described adjustment relative brightness Tr ', the respective immediate described relative brightness Tr of Tg ', Tb ' ", Tg ", Tb " and with described immediate relative brightness Tr ", Tg ", Tb " corresponding described contiguous settings R ', G ', B ':
S81: calculating adjustment relative brightness group (Tr ', Tg ', Tb '), wherein Tr '=r1/r2*Tr, Tg '=r1/r2*Tg, Tb '=r1/r2*Tb;
S82: the relative brightness Lj calculating settings j described in described presetting database respectively relativelywith Tr ', Tg in adjustment relative brightness group (Tr ', Tg ', Tb ') ', the absolute value of Tb ' difference;
S83: relative brightness Lj that will be minimum with the absolute value of described adjustment relative brightness Tr ' difference relativelybe recorded as the immediate relative brightness Tr of described adjustment relative brightness Tr ' ", relative brightness Lj that will be minimum with the absolute value of described adjustment relative brightness Tg ' difference relativelybe recorded as the immediate relative brightness Tg of described adjustment relative brightness Tg ' ", relative brightness Lj that will be minimum with the absolute value of described adjustment relative brightness Tb ' difference relativelybe recorded as the immediate relative brightness Tb of described adjustment relative brightness Tb ' ";
S8l: search described immediate relative brightness Tr " the described contiguous settings R ' of correspondence in described presetting database; search described immediate relative brightness Tg " the described contiguous settings G ' of correspondence in described presetting database, search described immediate relative brightness Tb " described contiguous settings B ' corresponding in described presetting database, records described contiguous settings group (R ', G ', B ').
9. adjust the GTG transition of display device and a device for color, it is characterized in that, described display device comprises zero level GTG to m level GTG, and described zero level GTG to m level GTG comprises n debugging GTG, and described device comprises:
Chroma luminance acquisition module, for obtaining target colorimetric brightness (x corresponding to described i-th grade of GTG target, y target, Y target) and current chroma brightness (x current, y current, Y current);
Memory module, for storing presetting database, described database comprises multiple different settings and multiple different relative brightness, and each described settings are a corresponding described relative brightness separately;
Module is set, for arranging the current setpoint value group (R, G, B) be made up of multiple described settings, controls described display device and showing with current setpoint value group (R, G, B);
Data analysis module, for calculating described target colorimetric brightness (x target, y target, Y target) corresponding object brightness coefficient sets (r1, g1, b1), described current chroma brightness (x current, y current, Y current) corresponding current brightness factor group (r2, g2, b2), described current setpoint value group (R is searched, G, B) at described presetting database corresponding present intensity group (Tr, Tg, Tb), and calculate and find out contiguous settings group (R ', G ', B ');
Judge module, for judging whether described contiguous settings group (R ', G ', B ') was measured by described chroma luminance acquisition module;
Wherein, m is more than or equal to n, and m, n are positive integer.
10. the GTG transition of adjustment display device according to claim 9 and the device of color, it is characterized in that, described data analysis module searches corresponding described relative brightness by described settings, or, search corresponding described settings by described relative brightness.
The GTG transition of 11. adjustment display device according to claim 9 and the device of color, is characterized in that, the described module that arranges also can arrange initial setting group (R0, G0, B0), and control described display device with current setpoint value group (R0, G0, B0) display.
The GTG transition of 12. adjustment display device according to claim 9 and the device of color, it is characterized in that, described data analysis module also can according to described target factor group (r1, g1, b1), described current coefficient group (r2, g2, b2) and described in the described present intensity group (Tr, Tg, Tb) of searching calculate adjustment relative brightness group (Tr ', Tg ', Tb ').
The GTG transition of 13. adjustment display device according to claim 12 and the device of color, it is characterized in that, described data analysis module also can search in described presetting database with described adjustment relative brightness group (Tr ', Tg ', Tb ') immediate described relative brightness (Tr "; Tg ", Tb ") and described immediate relative brightness group (Tr ", Tg ", Tb ") corresponding contiguous settings group (R ', G ', B ').
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