CN1697009A - Method for deciding signal of driving organic electroluminescence module - Google Patents
Method for deciding signal of driving organic electroluminescence module Download PDFInfo
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- CN1697009A CN1697009A CNA2005100813807A CN200510081380A CN1697009A CN 1697009 A CN1697009 A CN 1697009A CN A2005100813807 A CNA2005100813807 A CN A2005100813807A CN 200510081380 A CN200510081380 A CN 200510081380A CN 1697009 A CN1697009 A CN 1697009A
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Abstract
A decision method of driving signal for organic electrofluorescence component ( OEC ) includes using minimum signal value of three reference signal values of red, green and blue in reference driving signal corresponded by three - element OEC as white signal value of four - element OEC; using D - value of red reference signal value ( FSV ) to white signal value ( WSV ) as red signal value ( SV ), D - value of green FSV to WSV as green SV and D - value of blue FSV to WSV as blue SV; adjusting signal value of three colours to compensate colour cast of four - element OEC in display.
Description
Technical field
The present invention relates to a kind of organic electroluminescence assembly (Organic ElectroluminescentDevice, OLED) relevant method for deciding signal of driving; Particularly relate to a kind of relevant drive signal algorithm of display of organic electroluminescence with white organic LED (White OLED).
Background technology
Display of organic electroluminescence (OLEDs Display) has high brightness, high reaction velocity, compact, full-color and do not need advantage such as backlight, therefore the flat-panel screens (for example LCD) of other kind is caused the threat on the market.At present, display of organic electroluminescence has been applied to portable information products such as mobile phone, personal digital assistant, digital camera and video camera.
The correlation technique of display of organic electroluminescence is just owing to the ardent demand of market for display product, in therefore also developing very vigorously.It reaches the means of full-color demonstration, in visible known technology, comparatively common in the mode of utilizing ternary ruddiness Organic Light Emitting Diode (Red OLED), green glow Organic Light Emitting Diode (Green OLED) and blue light Organic Light Emitting Diode (Blue OLED).Conceptive, each pixel of this kind display is made of jointly red light unit, green glow unit and blue light unit, blendes together the color that each pixel institute desire shows with primaries.A plurality of pixels are arranged in the mode of array, and then form the display panel of display of organic electroluminescence.Below will be called for short this kind prior art with " ternary colour pattern display of organic electroluminescence ".
Based on the consideration of power consumption problem, existing another kind of known technology is provided out.It is to utilize at least one white organic LED (White OLED), and make each pixel with white light unit, red light unit, green glow unit and blue light unit, blend together the color that each pixel institute desire shows jointly, below will be with " quadri-chromatic type display of organic electroluminescence " to be called for short this kind prior art.
The power consumption of quadri-chromatic type display of organic electroluminescence only have ternary colour pattern display of organic electroluminescence 1/2nd or lower, its principle cooperates Figure 1A and Figure 1B to be described as follows.Figure 1A is the chromaticity coordinates figure about ternary colour pattern display of organic electroluminescence; Figure 1B is the chromaticity coordinates figure about the quadri-chromatic type display of organic electroluminescence.
With reference to Figure 1A, when desiring to make pixel show predetermined color C1, the red light unit of ternary colour pattern display of organic electroluminescence produces brightness R1, the green glow unit piece produces brightness G1 and blue light unit piece generation brightness B1, and then blendes together predetermined color C1.
Relatively, please refer to Figure 1B, in the quadri-chromatic type display of organic electroluminescence, when desiring to make pixel to show predetermined color C1, because of wherein having the white light unit, again, white light is the set for ruddiness, green glow and blue light, therefore, the quadri-chromatic type display of organic electroluminescence can produce brightness W2 by the white light unit, and brightness R1, G1 and the B1 than Figure 1A is lower respectively and make the brightness R2 of red light unit, the brightness G2 of green glow unit and the brightness B2 of blue light unit.Therefore, increase the result of white light unit, can make the power consumption requirements of other three coloured light unit all descend.So, the quadri-chromatic type display of organic electroluminescence has the benefit of the power consumption requirements lower than ternary colour pattern display of organic electroluminescence.
Yet, desire still has a little technical matters still to be overcome, for example with the quadri-chromatic type display of organic electroluminescence is actual when pushing to product line, the white light organic electroluminescence diode is when different operating voltages, and its luminous chromatogram has more serious comparatively speaking skew (can with reference to shown in Figure 2).
Fig. 2 is the spectrogram of white light organic electroluminescence diode under different operating voltage.As shown in the figure, when operating voltage was respectively 5V, 6V, 7V and 8V, the spectrum that the white light organic electroluminescence diode is presented was to have evident difference.
Therefore, the luminous chromatogram of white light organic electroluminescence diode is still stable unlike red, indigo plant or green organic electrofluorescence diode.Under different operating voltages, the white light that the white light organic electroluminescence diode produces has different proportion of composing, wherein ruddiness, green glow change because of operating voltage with the ratio regular meeting of blue light, cause the quadri-chromatic type display of organic electroluminescence to still have the shortcoming of color distortion to need to be overcome.Therefore, how facing the colour cast characteristic of white light organic electroluminescence diode, and then avoid the color distortion shortcoming of quadri-chromatic type display of organic electroluminescence, and bring into play the advantage of its low power consumption, is that current techniques lacks and emphasis direction to be developed.
Summary of the invention
The technical problem to be solved in the present invention is to improve the colour cast problem of quadri-chromatic type display of organic electroluminescence.
Another technical matters that will solve of the present invention is the colour cast characteristic of top view white light organic electroluminescence diode when different operating voltage, and then provides the quadri-chromatic type display of organic electroluminescence suitable drive signal.
Another technical matters that will solve of the present invention is to impel the quadri-chromatic type display of organic electroluminescence more to meet commercial demand.
As mentioned above, because the white light organic electroluminescence diode is when different operating voltages, its luminous chromatogram has more serious comparatively speaking skew, therefore, the present invention is directed to this characteristic, a kind of method for deciding signal of driving of organic electroluminescence assembly is provided, to provide suitable drive signal to organic electroluminescence assembly, making can be consistent with the color of exporting from the organic electroluminescent assembly at last from the color instruction of signal end, and then solves the problem of display of organic electroluminescence color offset.
The present invention is except at the colour cast characteristic of white light organic electroluminescence diode when the different operating voltage, provide outside the determining method of suitable drive signal, the convenience of the method provided also is provided, make method provided by the present invention can import among the present processing procedure apace, with in the display quality that improves the quadri-chromatic type display of organic electroluminescence, the fluency that the method that is provided incorporates present processing procedure is provided, and because of the low power consumption advantage that quadri-chromatic type had, and the competitive power on the significantly lifting industry.
In order to realize above-mentioned purpose of the present invention, according to an aspect of the present invention, a kind of method for deciding signal of driving of quadri-chromatic type organic electroluminescence assembly is provided, this drive signal comprises white signal, danger signal, green and blue signal, this method comprises the following steps: under the prerequisite that shows same color, with ternary colour pattern organic electroluminescence assembly the red reference signal value in the corresponding referenced drive signal, lowest signal value among green reference signal value and the blue reference signal value three is as the signal value of this white signal of this quadri-chromatic type organic electroluminescence assembly; With the difference of the signal value of this redness reference signal value and this white signal signal value as this danger signal, with the difference of the signal value of this green reference signal value and this white signal signal value, with the difference of the signal value of this blueness reference signal value and this white signal signal value as this blue signal as this green; And carry out alignment step, adjust the signal value of this danger signal, this green and this blue signal, the color offset phenomenon when showing to compensate this quadri-chromatic type organic electroluminescence assembly.
In order to realize above-mentioned purpose of the present invention, according to another aspect of the present invention, a kind of method for deciding signal of driving also is provided, be used for organic electroluminescence assembly, this organic electroluminescence assembly comprises the white light unit, red light unit, green glow unit and blue light unit, the color of one drive signal in order to determine that this organic electroluminescence assembly shows, the white signal of this method in order to determine that this drive signal comprises, danger signal, green and blue signal other signal value, this method comprises the following steps: to close this white light unit, only with this red light unit, this green glow unit and this blue light unit show predetermined color; Lowest signal value among the signal value three of the signal value of record this danger signal this moment, the signal value of this green and this blue signal; Open this white light unit, be the signal value of this white signal with this lowest signal value decision; Carry out alignment step,, make this organic electroluminescence assembly show this predetermined color with this danger signal of adjustment, this green and this blue signal other signal value; And the signal value of record this danger signal this moment, this green and this blue signal.
In order to realize above-mentioned purpose of the present invention, according to another aspect of the present invention, a kind of method for deciding signal of driving of quadri-chromatic type organic electroluminescence assembly also is provided, this drive signal comprises white signal, first chrominance signal, second chrominance signal and tristimulus signal, this method comprises the following steps: under the prerequisite that shows same color, with ternary colour pattern organic electroluminescence assembly the first look reference signal value in the corresponding referenced drive signal, lowest signal value among the second look reference signal value and the 3rd look reference signal value three is as the signal value of this white signal of this quadri-chromatic type organic electroluminescence assembly; With the difference of the signal value of this first look reference signal value and this white signal signal value as this first chrominance signal, with the difference of the signal value of this second look reference signal value and this white signal signal value, with the difference of the signal value of the 3rd look reference signal value and this white signal signal value as this tristimulus signal as this second chrominance signal; And carry out alignment step, adjust the signal value of this first chrominance signal, this second chrominance signal and this tristimulus signal, the color offset phenomenon when showing to compensate this quadri-chromatic type organic electroluminescence assembly.
Description of drawings
In conjunction with appended icon, can understand foregoing and plurality of advantages of the present invention by following detailed description easily, wherein:
Figure 1A is the chromaticity coordinates figure about a kind of ternary colour pattern display of organic electroluminescence;
Figure 1B is the chromaticity coordinates figure about a kind of quadri-chromatic type display of organic electroluminescence;
Fig. 2 is the spectrogram of white light organic electroluminescence diode under different operating voltage;
Fig. 3 is organic electroluminescence assembly of the present invention and drive signal graph of a relation; And
Fig. 4 is about coordinate diagram of the same colour of the present invention.
[main element label declaration]
Predetermined color C
1(red light unit) brightness R
1With R
2
(green glow unit) brightness G
1With G
2(blue light unit) brightness B
1With B
2
(redness) coordinate R (green) coordinate G
(blueness) coordinate B (white) coordinate W
0
(first color) coordinate W
1
Embodiment
Please refer to Fig. 3, organic electroluminescence assembly and drive signal graph of a relation that it is correlated with for the present invention.The invention provides a kind of method for deciding signal of driving, be used to drive organic electroluminescence assembly 30.Organic electroluminescence assembly 30 is display of organic electroluminescence 300 one of them unit picture element.
Each organic electroluminescence assembly 30 comprises white light unit 32, red light unit 34, green glow unit 36 and blue light unit 38.A plurality of organic electroluminescence assemblies 30 are arranged in the mode of array, then can form the display panel of display of organic electroluminescence 300, and this i.e. " quadri-chromatic type display of organic electroluminescence ".Certainly, the permutation and combination method of white light unit 32, red light unit 34, green glow unit 36 and blue light unit 38 does not exceed shown in scheming, and it can also or be the arrangement of any interlace mode for line spread; And the permutation and combination method of four unit (32,34,36 and 38) can be identical or different.White light unit 32, red light unit 34, green glow unit 36 and blue light unit 38 the relative position of each other are also unrestricted, visual actual design demand and conversion in addition.
The color that drive signal 40 shows in order to decision organic electroluminescence assembly 30 desires.Drive signal 40 comprises white signal, danger signal, green and blue signal.The brightness of white signal decision white light unit 32; The brightness of danger signal decision red light unit 34; The brightness of green decision green glow unit 36; And the brightness of blue signal decision blue cell 38.
Method provided by the present invention is about desiring with organic electroluminescence assembly 30 as a pixel, during Show Color, and the determining method of relevant drive signal 40.More accurate speech it, be the determining method of white signal, danger signal, green and blue signal other signal value wherein.
The present invention does not limit the pattern of drive signal 40, and it can be current drives, also can be driven, meaning promptly-signal value of drive signal 40 can be current value or magnitude of voltage.
Below according to the sequence of steps of the embodiment of the invention, method of the present invention is described:
＜first step 〉
At first, close white light unit 32, only show predetermined color C1 with red light unit 34, green glow unit 36 and blue light unit 38.In fact, this step promptly is equal to the mode of action of prior art " ternary colour pattern display of organic electroluminescence ".Therefore, when this step, the signal value of danger signal, green and blue signal can directly be continued to use the relevant drive signal of existing ternary colour pattern display of organic electroluminescence.Can represent according to following formula about the output color of organic electroluminescence assembly 30 and the relation of input signal in the case:
C=rR+gG+bB ...＜formula 1 〉
Wherein, C represents the color (color) of desire output, and this moment, its numerical value should equal C1; R, G and B then represent redness, green and blue.R represents the signal value (being relevant to the brightness of red light unit 34) of danger signal; G represents the signal value (being relevant to the brightness of green glow unit 36) of green; B represents the signal value (being relevant to the brightness of blue light unit 38) of blue signal.
Because signal value r, g and b mainly are as the reference value in the process in the present invention, therefore the drive signal that above-mentioned this ternary colour pattern display of organic electroluminescence is relevant can be considered a referenced drive signal.And danger signal, green and the blue signal of this moment other signal value can be considered red reference signal value, green reference signal value and blue reference signal value.
Preferably, can utilize for example chromatograph this moment, to measure the shown chromatogram of organic electroluminescence assembly 30 this moment, whether meets C1 with further affirmation.
＜the second step 〉
Lowest signal value among record danger signal this moment, green and the blue signal three, meaning promptly writes down the lowest signal value among red reference signal value (r), green reference signal value (g) and blue reference signal value (b) three.
＜third step 〉
Then, open white light unit 32, with the signal value of above-mentioned this lowest signal value as white signal.Thus, owing to sneaked into the light that white light unit 32 is provided, so the signal value of danger signal, green and blue signal must adjust, and could make organic electroluminescence assembly 30 continue demonstration predetermined color C1.The output color of organic electroluminescence assembly 30 and the relation of input signal can be represented according to following formula at this moment:
C＝r’R+g’G+b’B+wW
Where w=min[r, g, b] ....＜formula 2 〉
Wherein, min[r, g, b] represent lowest signal value among r, g, the b three, r ' represents the signal value (being relevant to the brightness of red light unit 34) of the danger signal after the adjustment; The signal value (being relevant to the brightness of green glow unit 36) of the green after g ' the expression adjustment; The signal value (being relevant to the brightness of blue light unit 38) of the blue signal after b ' the expression adjustment.And w represents the signal value (being relevant to the brightness of white light unit 32) of white signal this moment.
Adjusting process (being r ', the determining method of g ' and b ') about danger signal, green and blue signal other signal value below provides several embodiment to illustrate:
＜r ', g ' and b ' determining method example I 〉
In an embodiment of the present invention, can be according to the notion of " white light is the set of ruddiness, green glow and blue light ", order＜formula 2〉in danger signal, green and blue signal other signal value (r ', g ' and b ') according to following three formulas, give preliminary signal value in advance, input to red light unit 34, green glow unit 36 and blue light unit 38:
r’ ＝r-w
g’ ＝g-w
B '=b-w ... ..＜formula 3 〉
Then, consider the white light organic electroluminescence diode when different operating voltages, its luminous chromatogram and characteristic inequality are finely tuned signal value r ', g ' or b ' further.Simultaneously the broken color spectrometer is to the detection of organic electroluminescence assembly 30, with the color of confirming that fine setting back organic electroluminescence assembly 30 is shown.When fine setting organic electroluminescence assembly 30, determine that it shows predetermined color C1 after, then record danger signal this moment, green and blue signal other signal value (its numerical value has changed after finely tuning becomes r ", g " and b ").
Thus, in the time of can obtaining desiring to show predetermined color C1, white signal, danger signal, green and blue signal other correct signal value w, r in the drive signal 40 with organic electroluminescence assembly 30 ", g " and b ".
＜r ', g ' and b ' determining method example II 〉
In preferred embodiment of the present invention, be to utilize following three formulas:
r’ ＝a
1(r-w)+b
1w
g’ ＝a
2(g-w)+b
2w
B '=a
3(b-w)+b
3W ....＜formula 5 〉
Utilize chromatograph to detect the shown chromatogram of organic electroluminescence assembly 30 simultaneously, and cooperate white balance adjustment, gamma adjustment, with the signal value of decision danger signal, green and blue signal.
General＜formula 5〉substitution＜formula 2 the result, can obtain:
C＝a
1(r-w)R+a
2(g-w)G+a
3(b-w)B+b
1wR+b
2wG+b
3wB+wW
..＜formula 6 〉
Wherein, a
1, a
2, a
3, b
1, b
2With b
3Be coefficient.Coefficient b
1, b
2With b
3Be in order to carrying out the white balance adjustment, and coefficient a
1, a
2With a
3Be in order to adjustment redness, green and blue other gamma curve (gamma curve).According to method provided by the present invention, the output color of organic electroluminescence assembly 30 and the relation of input signal all can＜formula 6 represent.Coefficient a
1, a
2, a
3, b
1, b
2With b
3The deciding means of numerical value be described below:
(b
1, b
2With b
3Deciding means)
Because primary goal of the present invention is to improve the color offset shortcoming of " quadri-chromatic type display of organic electroluminescence ", therefore, after the signal value w of above-mentioned white signal has determined, carry out a white balance alignment step-make organic electroluminescence assembly 30 and show " white ", this moment because of r=w, g=w and b=w, so:
C=b
1WR+b
2WG+b
3WB+wW ....＜formula 7 〉
At coefficient b
1, b
2With b
3Numerical value be all under zero the situation, then:
C=wW ...＜formula 8 〉
＜formula 8〉can be considered the independent colors output situation in white light unit 32 in the organic electroluminescence assembly 30, in the prior art, when desiring display white, substantially promptly with＜formula 8〉mode carry out, meaning be-is only lighted white light unit 32.Yet because the characteristic of white organic electroluminescent diode colour cast, so the existing practice of this kind often understands the situation that adularescent produces skew, and in other words, white light unit 32 showers are pure white.In view of this, the present invention is in this stage utilization＜formula 7〉coefficient b
1, b
2With b
9Compensate the colour cast of white light unit 32.
Please refer to Fig. 4, it is about coordinate diagram of the same colour of the present invention.Utilize Fig. 4 to strengthen explanation＜formula 7 〉, the embodiment that Fig. 4 shows is display white is desired in white light unit 32 under the situation of high electric field a situation.
As shown in Figure 4, the color of red light unit 34 outputs is the positions that are located in coordinate R; The color of green glow unit 36 outputs is the positions that are located in coordinate G; The color of blue light unit 38 outputs is the positions that are located in coordinate B.
Yet because in this embodiment, white light unit 32 is to be in high electric field, and it produces the mauve color offset phenomenon of deflection, and as shown in Figure 4, the color of white light unit 32 outputs is not to be located in white pairing coordinate W
0, but be located in coordinate W1, corresponding to first color.
Therefore, among this embodiment, can be respectively or make green glow unit 36 and blue light unit 38 increase specific brightness simultaneously, promptly increases＜formula 7〉middle coefficient b
2With b
3Numerical value, to remedy the colour cast of white light unit 32, making organic electroluminescence assembly 30 output photochromic reach photochromic that desire shows (is coordinate W
0).In this embodiment, b
1Value equal zero.
Above-mentioned white balance alignment step and coefficient b
1, b
2With b
3Deciding means, can be generalized into the following step:
When 1) detecting with white signal driving white light unit 32, the first color (W of its demonstration
1) and white (W
0) gap.
2) open red light unit 34, green glow unit 36, blue light unit 38 or its combination of organic electroluminescence assembly 30, with the first color (W
1) colour mixture one-tenth white (W
0).
3) write down the signal value of red light unit 34 at this moment, to use danger signal (blw), record green glow unit 36 signal value at this moment, to use green (b as compensating as compensating
2W), write down the blue light unit signal value of 38 this moments, to use blue signal (b as compensating
3W).
(a
1, a
2With a
3Deciding means)
About coefficient a
1, a
2With a
3The asking for of numerical value, at first to ask for a
1Be example, it is to carry out red gamma alignment step, and method is: show " redness " with organic electroluminescence assembly 30, promptly close white light unit 32, green glow unit 36 and blue light unit 38, only open red light unit 34.The danger signal that inputs to red light unit 34 can be expressed as:
C=a
1(r-w) R ... ..＜formula 9a 〉
Because＜formula 9a in, the numerical value of r and w is all definite, therefore, at first makes a
1Numerical value equal 1, next, cooperate and to utilize the observation of chromatograph, fine setting a organic electroluminescence assembly 30
1, so that red gamma curve (gamma curve) is adjusted to predetermined curve, when predetermined gamma curve (gammacurve) when reaching, a
1Numerical value can determine.
Therefore, above-mentioned red gamma alignment step and coefficient a
1Deciding means, can be generalized into the following step:
1) only drives the red light unit 34 of organic electroluminescence assembly 30 with danger signal.
2) detection red gamma curve at this moment, and cooperation is adjusted danger signal, makes red gamma curve be adjusted to a predetermined curve.
3) multiple before and after the record danger signal is adjusted is as the adjustment coefficient (a1) of danger signal.
About a
2With a
3The determining method of numerical value, be to utilize following two formulas:
C=a
2(r-w) R ... ..＜formula 9b 〉
C=a
3(r-w) R ... ..＜formula 9c 〉
All the other methods are in like manner in above-mentioned a
1Method, repeat no more in this.
＜illustrate
It should be noted that, characteristics of the present invention are can be via the method for above introduction, above-listed to obtain＜formula 2〉w, r ', g ' and b ' be relevant to＜formula 1 r, g and the mutual relationship of b, in other words, according to the present invention, can utilize existing " ternary colour pattern display of organic electroluminescence " existing drive signal tables of data (driving signal data table), to set up the drive signal tables of data of " quadri-chromatic type display of organic electroluminescence ".
Because in the evolution of the present invention, the improvement of the color offset shortcoming that head overweights existing " quadri-chromatic type display of organic electroluminescence ", via the foregoing invention explanation as can be known, this existing shortcoming scheme that in the present invention, has been resolved.
In addition, embodiment provided by the invention, wherein utilize the characteristics of algorithm, ask for when driven by specific white signal (the white organic electroluminescent diode is under the situation of specific operating voltage), the pairing compensation in its excess-three coloured light unit with signal with adjust coefficient.By this, a plurality of colors with same white signal (value) do not need to carry out repeatedly one by one method of the present invention, as long as at the specific pairing coefficient a of a w value
1, a
2, a
3, b
1, b
2With b
3After obtaining respectively, can utilize " ternary colour pattern display of organic electroluminescence " existing drive signal tables of data, foundation belongs to a plurality of drive signal of the present invention apace.
And for different w values, be example as if the situation that has 256 GTGs with white signal, the white signal w that can obtain 256 GTGs respectively distinguishes corresponding coefficient a
1, a
2, a
3, b
1, b
2With b
3In another embodiment, also can choose the wherein white GTG of given number (for example choosing 16 predetermined white GTGs), obtain relevant coefficient a
1, a
2, a
3, b
1, b
2With b
3After, remaining drive signal can utilize the mode of interpolation method to try to achieve, and this embodiment can further quicken the foundation of the drive signal tables of data of " quadri-chromatic type display of organic electroluminescence ".
Because spirit of the present invention is to improve the color offset phenomenon that the quadri-chromatic type organic electroluminescence assembly is caused because of the white organic electroluminescent diode, therefore, the present invention is not limited to the quadri-chromatic type organic electroluminescence assembly with white light unit, red light unit, green glow unit and blue light unit composition, red light unit wherein, green glow unit and blue light unit are replaceable to be the first coloured light unit, the second coloured light unit and the 3rd coloured light unit, drives with corresponding first chrominance signal, second chrominance signal and tristimulus signal respectively.
Though the present invention illustrates as above with preferred embodiments, so it is not only to terminate in the foregoing description that in order to limit the present invention's spirit with the invention entity.For those skilled in the art, when understanding and utilize other assembly or mode to produce identical effect easily.Be with, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the described claim scope.
Claims (15)
1. the method for deciding signal of driving of a quadri-chromatic type organic electroluminescence assembly, this drive signal comprises white signal, danger signal, green and blue signal, this method comprises the following steps:
Under the prerequisite that shows same color, with ternary colour pattern organic electroluminescence assembly the lowest signal value among red reference signal value, green reference signal value and the blue reference signal value three in the corresponding referenced drive signal, as the signal value of this white signal of this quadri-chromatic type organic electroluminescence assembly;
With the difference of the signal value of this redness reference signal value and this white signal signal value as this danger signal, with the difference of the signal value of this green reference signal value and this white signal signal value, with the difference of the signal value of this blueness reference signal value and this white signal signal value as this blue signal as this green; And
Carry out alignment step, adjust the signal value of this danger signal, this green and this blue signal, the color offset phenomenon when showing to compensate this quadri-chromatic type organic electroluminescence assembly.
2. the method for claim 1, wherein this alignment step comprises the white balance alignment step, comprising:
Only detect when driving the white light unit that this quadri-chromatic type organic electroluminescence assembly comprised the gap of first color of its demonstration and white with this white signal value;
Open red light unit, green glow unit, blue light unit or its combination that this quadri-chromatic type organic electroluminescence assembly is comprised, so that this first color colour mixture is become white; And
Record this moment this red light unit correspondence compensation with the compensation of danger signal, this green glow unit correspondence with the green compensation blue signal corresponding with this blue light unit.
3. the method for claim 1, wherein this alignment step comprises red gamma alignment step, comprising:
Only drive the red light unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this danger signal value;
Detect the red gamma curve of this moment and cooperate this danger signal value is adjusted, so that should the redness gamma curve be adjusted to predetermined curve; And
Write down this danger signal value and adjust the multiple of front and back with adjustment coefficient as this danger signal.
4. the method for claim 1, wherein this alignment step comprises green gamma alignment step, comprising:
Only drive the green glow unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this green value;
Detect the green gamma curve of this moment and cooperate this green value is adjusted, so that should the green gamma curve be adjusted to predetermined curve; And
Write down this green value and adjust the multiple of front and back with adjustment coefficient as this green.
5. the method for claim 1, wherein this alignment step comprises blue gamma alignment step, comprising:
Only drive the blue light unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this blue signal value;
Detect the blue gamma curve of this moment and cooperate this blue signal value is adjusted, so that should the blueness gamma curve be adjusted to predetermined curve; And
Write down this blue signal value and adjust the multiple of front and back with adjustment coefficient as this blue signal.
6. method for deciding signal of driving, be used for organic electroluminescence assembly, this organic electroluminescence assembly comprises white light unit, red light unit, green glow unit and blue light unit, the color of one drive signal in order to determine that this organic electroluminescence assembly shows, this method white signal, danger signal, green and blue signal other signal value in order to determine this drive signal to comprise, this method comprises the following steps:
Close this white light unit, only show predetermined color with this red light unit, this green glow unit and this blue light unit;
Lowest signal value among the signal value three of the signal value of record this danger signal this moment, the signal value of this green and this blue signal;
Open this white light unit, be the signal value of this white signal with this lowest signal value decision;
Carry out alignment step,, make this organic electroluminescence assembly show this predetermined color with this danger signal of adjustment, this green and this blue signal other signal value; And
The signal value of record this danger signal this moment, this green and this blue signal.
7. method as claimed in claim 6, wherein this alignment step comprises the white balance alignment step, comprising:
When detection drives this white light unit with this white signal, first color of its demonstration and white gap;
Open this red light unit, this green glow unit, this blue light unit or its combination, so that this first color colour mixture is become white; And
Record this moment this red light unit signal value, the signal value of this green glow unit and the signal value of this blue light unit, with as compensation with danger signal, compensate with green, compensate and use blue signal.
8. method as claimed in claim 6, wherein this alignment step comprises red gamma alignment step, comprising:
Only drive this red light unit with this danger signal value;
Detect the red gamma curve of this moment and cooperate this danger signal value is adjusted, so that should the redness gamma curve be adjusted to predetermined curve; And
Write down this danger signal value and adjust the multiple of front and back with adjustment coefficient as this danger signal.
9. method as claimed in claim 6, wherein this alignment step comprises green gamma alignment step, comprising:
Only drive this green glow unit with this green value;
Detect the green gamma curve of this moment and cooperate this green value is adjusted, so that should the green gamma curve be adjusted to predetermined curve; And
Write down this green value and adjust the multiple of front and back with adjustment coefficient as this green.
10. method as claimed in claim 6, wherein this alignment step comprises blue gamma alignment step, comprising:
Only drive this blue light unit with this blue signal value;
Detect the blue gamma curve of this moment and cooperate this blue signal value is adjusted, so that should the blueness gamma curve be adjusted to predetermined curve; And
Write down this blue signal value and adjust the multiple of front and back with adjustment coefficient as this blue signal.
11. the method for deciding signal of driving of a quadri-chromatic type organic electroluminescence assembly, this drive signal comprise white signal, first chrominance signal, second chrominance signal and tristimulus signal, this method comprises the following steps:
Under the prerequisite that shows same color, with ternary colour pattern organic electroluminescence assembly the lowest signal value among the first look reference signal value, the second look reference signal value and the 3rd look reference signal value three in the corresponding referenced drive signal, as the signal value of this white signal of this quadri-chromatic type organic electroluminescence assembly;
With the difference of the signal value of this first look reference signal value and this white signal signal value as this first chrominance signal, with the difference of the signal value of this second look reference signal value and this white signal signal value, with the difference of the signal value of the 3rd look reference signal value and this white signal signal value as this tristimulus signal as this second chrominance signal; And
Carry out alignment step, adjust the signal value of this first chrominance signal, this second chrominance signal and this tristimulus signal, the color offset phenomenon when showing to compensate this quadri-chromatic type organic electroluminescence assembly.
12. method as claimed in claim 11, wherein this alignment step comprises the white balance alignment step, comprising:
Only detect when driving the white light unit that this quadri-chromatic type organic electroluminescence assembly comprised the gap of first color of its demonstration and white with this white signal value;
Open the first coloured light unit, the second coloured light unit, the 3rd coloured light unit or its combination that this quadri-chromatic type organic electroluminescence assembly is comprised, so that this first color colour mixture is become white; And
Record this moment this first coloured light unit correspondence compensation with the compensation of first chrominance signal, this second coloured light unit correspondence with second chrominance signal compensation tristimulus signal corresponding with the 3rd coloured light unit.
13. method as claimed in claim 11, wherein this alignment step comprises the first look gamma alignment step, comprising:
Only drive the first coloured light unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this first chrominance signal value;
Detect the first look gamma curve of this moment and cooperate this first chrominance signal value is adjusted, so that this first look gamma curve is adjusted to predetermined curve; And
Write down this first chrominance signal value and adjust the multiple of front and back with adjustment coefficient as this first chrominance signal.
14. method as claimed in claim 11, wherein this alignment step comprises the second look gamma alignment step, comprising:
Only drive the second coloured light unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this second chrominance signal value;
Detect the second look gamma curve of this moment and cooperate this second chrominance signal value is adjusted, so that this second look gamma curve is adjusted to predetermined curve; And
Write down this second chrominance signal value and adjust the multiple of front and back with adjustment coefficient as this second chrominance signal.
15. method as claimed in claim 11, wherein this alignment step comprises the 3rd look gamma alignment step, comprising:
Only drive the 3rd coloured light unit that this quadri-chromatic type organic electroluminescence assembly is comprised with this tristimulus signal value;
Detect the 3rd look gamma curve of this moment and cooperate this tristimulus signal value is adjusted, so that the 3rd look gamma curve is adjusted to predetermined curve; And
Write down this tristimulus signal value and adjust the multiple of front and back with adjustment coefficient as this tristimulus signal.
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