CN109767722A - A kind of OLED mould group Gamma adjusting method and regulating device - Google Patents
A kind of OLED mould group Gamma adjusting method and regulating device Download PDFInfo
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Abstract
The invention discloses a kind of OLED mould group Gamma adjusting method and devices.The method includes: to obtain the corresponding maximum gray value of OLED mould group；Grayscale value is defined according to maximum gray value and setting gamma curve acquisition；Maximum gray value forms the first grayscale section with grayscale value is defined, and the first grayscale section includes multiple first node grayscale values, and linear interpolation method is utilized to obtain the corresponding first target voltage value of each first node grayscale value；The corresponding voltage value of first node grayscale value in the first grayscale section is adjusted to corresponding first target voltage value；It defines grayscale value and minimum setting grayscale value forms the second grayscale section, the second grayscale section includes multiple second node grayscale values, and usage factor matrix method obtains corresponding second target voltage values of each second node grayscale value；The corresponding voltage value of second node grayscale value in the second grayscale section is adjusted to corresponding second target voltage values.According to the technical solution of the present invention, the Gamma for improving OLED mould group adjusts efficiency.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of OLED mould group Gamma adjusting method and adjustings
Device.
Background technique
The gamma curve of display module is to characterize optical brightness to the important ginseng of the display module of electric response characteristic
Number, the gamma curve by adjusting display module can adjust the characterisitic parameter of the display picture of display module, to promote display
The display effect of mould group.
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) mould group is due to its self-luminous, wide
Visual angle and it is bright in luster the advantages that have been more and more widely used, the currently used adjusting side Gamma to OLED mould group
The linear interpolation method of method and Effective Coefficient Matrix Method, but linear interpolation method and Effective Coefficient Matrix Method are to high gray section and low ash rank section
Adjustment speed it is inconsistent, greatly reduce OLED mould group Gamma adjust efficiency.
Summary of the invention
The present invention provides a kind of OLED mould group Gamma adjusting method and regulating device, adjusts high ash by linear interpolation method
The gamma curve in rank section adjusts the gamma curve in low ash rank section by Effective Coefficient Matrix Method, using linear interpolation method to height
Grayscale section gamma curve adjustment speed is fast, the Effective Coefficient Matrix Method feature fast to low ash rank section gamma curve adjustment speed,
The Gamma for increasing OLED mould group adjusts efficiency.
In a first aspect, the embodiment of the present invention proposes a kind of OLED mould group Gamma adjusting method, comprising:
Obtain the corresponding maximum gray value of the OLED mould group；
Grayscale value is defined according to the maximum gray value and setting gamma curve acquisition；
The maximum gray value and the grayscale value that defines form the first grayscale section, and first grayscale section includes more
A first node grayscale value obtains the corresponding first target voltage value of each first node grayscale value using linear interpolation method；
The corresponding voltage value of the first node grayscale value in first grayscale section is adjusted to corresponding described
One target voltage values；
Described to define the second grayscale section of grayscale value and minimum setting grayscale value formation, second grayscale section includes more
A second node grayscale value, usage factor matrix method obtain corresponding second target voltage values of each second node grayscale value；
The corresponding voltage value of the second node grayscale value in second grayscale section is adjusted to corresponding described
Two target voltage values.
Further, described to obtain the corresponding first target voltage of each first node grayscale value using linear interpolation method
Value includes:
It obtains the corresponding maximum voltage value of the maximum gray value and described defines that grayscale value is corresponding to define voltage value；
According to the maximum gray value, described define grayscale value, the maximum voltage value, the voltage value and described of defining
First node grayscale value obtains the corresponding first target voltage value of the first node grayscale value.
Further, the corresponding maximum voltage value of the acquisition maximum gray value and the grayscale value that defines correspond to
The voltage value that defines include:
The maximum gray, which is obtained, according to first object brightness and first object colour temperature is worth corresponding maximum voltage value；
According to the second object brightness and the second target colour temperature obtain described in define that grayscale value is corresponding to define voltage value.
Further, the corresponding first object electricity of each first node grayscale value is obtained using linear interpolation method described
Before pressure value further include:
Setting grayscale value is obtained according to the maximum gray value and the setting gamma curve；Wherein, the setting grayscale
Value is the adjacent grayscale value of the maximum gray value；
The utilization linear interpolation method obtains the corresponding first target voltage value of each first node grayscale value
Obtain the corresponding maximum voltage value of the maximum gray value and the corresponding setting voltage value of the setting grayscale value；
According to the maximum gray value, the setting grayscale value, the maximum voltage value, the setting voltage value and described
First node grayscale value obtains the corresponding first target voltage value of the first node grayscale value.
Further, the acquisition maximum gray is worth corresponding maximum voltage value and the setting grayscale value is corresponding
Setting voltage value include:
The maximum gray, which is obtained, according to first object brightness and first object colour temperature is worth corresponding maximum voltage value；
The corresponding setting voltage value of the setting grayscale value is obtained according to third object brightness and third target colour temperature.
Further, the usage factor matrix method obtains corresponding second target voltage of each second node grayscale value
Value includes:
Each second section is obtained according to corresponding voltage value and the setting gamma curve of defining of grayscale value that define
The corresponding coefficient matrix of point grayscale value；
Corresponding second target of the second node grayscale value is obtained according to the coefficient matrix and the voltage value that defines
Voltage value.
Second aspect, the embodiment of the present invention propose a kind of OLED mould group Gamma regulating device, which includes:
Maximum gray value obtains module, for obtaining the corresponding maximum gray value of the OLED mould group；
It defines grayscale value and obtains module, for defining grayscale according to the maximum gray value and setting gamma curve acquisition
Value；
First target voltage value obtains module, defines for obtaining the maximum gray value using linear interpolation method with described
The corresponding first target voltage value of each first node grayscale value in the first grayscale section that grayscale value is formed；
First target voltage value adjustment module, for adjusting the first node grayscale value in first grayscale section
Corresponding voltage value is to the corresponding first target voltage value；
Second target voltage values obtain module, for defining grayscale value and minimum setting described in the acquisition of usage factor matrix method
Corresponding second target voltage values of each second node grayscale value in the second grayscale section that grayscale value is formed；
Second target voltage values adjustment module, for adjusting the second node grayscale value in second grayscale section
Corresponding voltage value is to corresponding second target voltage values.
Further, the OLED mould group Gamma regulating device further include:
Maximum voltage value obtains module, for obtaining the maximum gray according to first object brightness and first object colour temperature
It is worth corresponding maximum voltage value；
It defines voltage value and obtains module, for defining grayscale according to the second object brightness and the acquisition of the second target colour temperature
It is worth and corresponding defines voltage value；
The first target voltage value obtains module and is also used to according to the maximum gray value, described defines grayscale value, institute
State maximum voltage value, it is described define voltage value and the first node grayscale value to obtain the first node grayscale value corresponding
First target voltage value.
Further, the OLED mould group Gamma regulating device further include:
It sets grayscale value and obtains module, for obtaining setting according to the maximum gray value and the setting gamma curve
Grayscale value；Wherein, the grayscale value that sets is the adjacent grayscale value of the maximum gray value；
It sets voltage value and obtains module, for obtaining the setting grayscale according to third object brightness and third target colour temperature
It is worth corresponding setting voltage value；
The first target voltage value obtains module and is also used to according to the maximum gray value, the setting grayscale value, institute
Stating maximum voltage value, the setting voltage value and the first node grayscale value, to obtain the first node grayscale value corresponding
First target voltage value.
Further, the OLED mould group Gamma adjustment module further include:
Coefficient matrix obtains module, and for defining according to, grayscale value is corresponding to define voltage value and the setting
Gamma curve obtains the corresponding coefficient matrix of each second node grayscale value.
The embodiment of the invention provides a kind of OLED mould group Gamma adjusting method and regulating devices, utilize linear interpolation method
The corresponding voltage value of each first node grayscale value in the first grayscale section is adjusted to corresponding first target voltage value, usage factor
Matrix method adjusts in the second grayscale section the corresponding voltage value of each second node grayscale value to corresponding second target voltage values, gram
The high gray section and low ash rank section gamma curve adjustment speed of linear interpolation method or Effective Coefficient Matrix Method to OLED mould group are taken
Inconsistent disadvantage, and the first grayscale section by maximum gray value and is defined grayscale value and is formed, the second grayscale section is by defining ash
Rank value and minimum setting grayscale value are formed, i.e. the first grayscale section is high gray section relative to the second grayscale section, utilizes line
Property interpolation method it is fast to high gray section gamma curve adjustment speed, Effective Coefficient Matrix Method to low ash rank section gamma curve adjust speed
Fast feature is spent, the Gamma for improving OLED mould group adjusts efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow diagram for OLED mould group Gamma adjusting method that the embodiment of the present invention one provides；
Fig. 2 is that a kind of relationship of the corresponding each parameter of gamma curve for OLED mould group that the embodiment of the present invention one provides is shown
It is intended to；
Fig. 3 is the flow diagram of another kind OLED mould group Gamma adjusting method provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of structural schematic diagram for OLED mould group Gamma regulating device that the embodiment of the present invention three provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of flow diagram for OLED mould group Gamma adjusting method that the embodiment of the present invention one provides.The present invention
The technical solution of embodiment can be applied in the scene for needing the gamma curve to OLED mould group to be adjusted, can be by this hair
OLED mould group Gamma regulating device that bright embodiment provides executes.As shown in Figure 1, this method comprises:
S110, the corresponding maximum gray value of the OLED mould group is obtained.
Illustratively, by taking 8 bit grayscale values as an example, the grayscale value range of OLED mould group is 0 grayscale to 255 grayscale, then most
Big grayscale value is 255 grayscale.It should be noted that being only illustrated so that grayscale value is 8 bits as an example here, the present invention is implemented
Example is not construed as limiting the bit number of grayscale value.
S120, grayscale value is defined according to the maximum gray value and setting gamma curve acquisition.
Specifically, the adjusting of display module display brightness can be realized by the adjusting of the gamma curve to display module,
And the storage value in gamma curve in the corresponding voltage value of each node grayscale value and OLED mould group register corresponds, as a result,
Gamma curve can indicate the voltage value of each node grayscale value and the corresponding relationship of grayscale value, can also indicate that OLED mould group is posted
The corresponding relationship of storage value and grayscale value in storage.
Fig. 2 is that a kind of relationship of the corresponding each parameter of gamma curve for OLED mould group that the embodiment of the present invention one provides is shown
It is intended to.As shown in Fig. 2, schematically illustrating the gamma curve 201,202 and 203 of one group of setting, abscissa is indicated in Fig. 2
Node grayscale value Gray, the digit that node grayscale value Gray is illustratively arranged here is 8 bits, i.e. totally 256 in Gamma orientation
A node grayscale value, left side ordinate indicate that the storage value Data in OLED mould group register, storage value Data can indicate to deposit
The initial value of grayscale value to be regulated in a register is stored up, here illustratively with 10 binary representation storage value Data, storage
The value range of value Data is 0-1024, and right side ordinate indicates voltage value V, and the value of voltage value V is illustratively arranged here
Range is 2.0V-5.0V.
Specifically, as shown in Fig. 2, having an electricity for each node grayscale value Gray in an independent gamma curve
The storage value Data of pressure value V and register is corresponded therewith, i.e. each node voltage value in voltage value V and storage value Data
Each node storage value correspond, the value range with voltage value V is A1-A2, and the value range of storage value Data is 0-
For 1024, the two corresponding relationship meets following formula:
Illustratively, can be set storage value Data value be 0 when, voltage value V value be 2.0V；Storage value Data value
When being 1024, voltage value V value is 5.0V；When storage value Data value is 512, voltage value V value is 3.5V.Given one is deposited
Stored Value Data can determine corresponding voltage value V, show as the adjusting to storage value Data to the adjusting of voltage value V.
Defining grayscale value is the boundary grayscale value for setting linear constant interval and nonlinear change section in gamma curve.
Specifically, storage value Data becomes when can be definite value by comparing the node grayscale value Gray variable quantity of gamma curve in Fig. 2
Change amount whether be definite value or voltage value V variable quantity whether be definite value determine gamma curve linear change section and non-limit
Determine constant interval, and then determine the size for defining grayscale value, to define the size of grayscale value be 50 as shown in Fig. 2, then can be set.
Illustratively, setting gamma curve can be Gamma2.2 curve.
It should be noted that grayscale value is exemplarily only defined according to the acquisition of gamma curve 201 in Fig. 2, it can also basis
The actual displayed demand of OLED mould group sets gamma curve, and then obtains and define grayscale value, and the embodiment of the present invention is to this
It is not construed as limiting.
S130, the maximum gray value and the grayscale value that defines form the first grayscale section, first grayscale section
Including multiple first node grayscale values, the corresponding first object electricity of each first node grayscale value is obtained using linear interpolation method
Pressure value.
Specifically, maximum gray value and the first grayscale section for defining grayscale value formation, the first grayscale section are set
The linear change section of gamma curve.Illustratively, in the linear change section of gamma curve, i.e. the first grayscale section,
It is not necessary that the corresponding voltage value of each first node grayscale value is adjusted, the first grayscale section inner part first can be only adjusted
The corresponding voltage value of node grayscale value is to corresponding first target voltage value, to meet the display demand of OLED mould group.In addition, by
It is in the first grayscale section of gamma curve in first node grayscale value, i.e., in linear change section, therefore uses linear interpolation
Method can quickly and accurately obtain the corresponding first target voltage value of first node grayscale value needed in the first grayscale section.
Optionally, it obtains the corresponding maximum voltage value of maximum gray value and defines that grayscale value is corresponding to define voltage value,
According to maximum gray value, defines grayscale value, maximum voltage value, defines voltage value and first node grayscale value obtains the first node
The corresponding first target voltage value of grayscale value.
Optionally, the maximum gray can be obtained according to first object brightness and first object colour temperature and is worth corresponding maximum
Voltage value, according to the second object brightness and the second target colour temperature obtain described in define that grayscale value is corresponding to define voltage value.Specifically
, the brightness of OLED mould group can be adjusted to first object brightness, color temperature adjustment to first object colour temperature, OLED mould group at this time
Grayscale value is maximum gray value, and corresponding voltage value is the corresponding maximum voltage value of maximum gray value.It can be by OLED mould
The brightness of group is adjusted to the second object brightness, and color temperature adjustment to the second target colour temperature, the grayscale value of OLED mould group is and defines at this time
Grayscale value, corresponding voltage value are to define that grayscale value is corresponding to define voltage value.
As shown in Fig. 2, since voltage value V and storage value Data are there are one-to-one relationship, according to maximum gray value,
It defines grayscale value, maximum voltage value, define voltage value and first node grayscale value obtains first node grayscale value corresponding the
The process of one target voltage values can be equivalent to according to maximum gray value, define the corresponding maximum of grayscale value, maximum voltage value and deposit
Stored Value defines corresponding storage value and the first node grayscale value of defining of voltage value and obtains first node grayscale value corresponding first
The process of the corresponding first object storage value of target voltage values.Setting to the property of can be exemplified OLED mould group includes red pixel cell
R, green pixel cell G and blue pixel cells B.
It is possible, firstly, to which the brightness of OLED mould group is adjusted to first object brightness, color temperature adjustment is obtained to first object colour temperature
The corresponding maximum storage value of one group of maximum voltage value: R255, G255 and B255.It is then possible to which the brightness of OLED mould group is adjusted to
Second object brightness, color temperature adjustment to the second target colour temperature obtain that a class boundary constant voltage value is corresponding to define storage value: RHmin,
GHmin and BHmin.It is respectively RGraymin, GGraymin, BGraymin that grayscale value is defined in setting, utilizes linear interpolation method, example
Such as linear interpolation, calculates maximum gray value and define i-th of first node grayscale in the first grayscale section that grayscale value is formed
The corresponding one group of first target voltage of value Grayi is worth corresponding first object storage value: Ri, Gi and Bi, specific formula for calculation is such as
Under:
Illustratively, can set and define grayscale value RGraymin, GGraymin, BGraymin is 50, then defines electricity
Corresponding storage value RHmin, GHmin, the BHmin of defining of pressure value can be expressed as R50, G50,50, then above-mentioned formula deforms are as follows:
It should be noted that the brightness value of above-mentioned first object brightness and the second object brightness can be according to the reality of OLED mould group
Border shows that demand is configured, and above-mentioned first object colour temperature and the second target colour temperature meet CIE1931 standard.In addition, in Fig. 2
Illustratively show above-mentioned setting gamma curve 201,202 and 203 to define grayscale value identical, difference also can be set
Gamma curve defines grayscale value difference, and the embodiment of the present invention is not construed as limiting this.
S140, the corresponding voltage value of the first node grayscale value in first grayscale section is adjusted to corresponding institute
State first target voltage value.
Specifically, the corresponding voltage value of first node grayscale value in the first grayscale section is adjusted to first target voltage
Value, can be by being adjusted to above-mentioned Ri, Gi being calculated for the storage value Data in the corresponding register of first node grayscale value
It is realized with Bi.
S150, described grayscale value is defined and minimum setting grayscale value forms the second grayscale section, second grayscale section
Including multiple second node grayscale values, usage factor matrix method obtains the corresponding second target electricity of each second node grayscale value
Pressure value.
Illustratively, by taking grayscale value is 8 bits as an example, the adjustable range of grayscale value is 0-255, then minimum can be set and set
Determining grayscale value is 0；If the adjustable range of grayscale value is 20-230, minimum can be set and set grayscale value as 20 grayscale.This hair
Bright embodiment is not construed as limiting the specific value of minimum setting grayscale value, can be set according to the actual displayed demand of OLED mould group
It sets.
Wherein, the second grayscale section that grayscale value and minimum setting grayscale value are formed is defined, i.e., setting gamma curve is non-
Linear change section.Likewise, in the nonlinear change section of gamma curve, i.e. in the second grayscale section, without to each
The corresponding voltage value of second node grayscale value is adjusted, and can only adjust the second grayscale section inner part second node grayscale value
Corresponding voltage value is to corresponding second target voltage values, to meet the display demand of OLED mould group.In addition, due to second node
Grayscale value is in the second grayscale section of gamma curve, i.e. nonlinear change section, using linear interpolation method to gamma curve
Adjustment speed it is larger compared with slow and error, therefore select and the Effective Coefficient Matrix Method that linear corresponding relation does not require be adjusted.
Optionally, it can be obtained according to above-mentioned corresponding voltage value and the above-mentioned setting gamma curve of defining of grayscale value that define
The corresponding coefficient matrix of each above-mentioned second node grayscale value obtains above-mentioned the according to above-mentioned coefficient matrix and the above-mentioned voltage value that defines
Corresponding second target voltage values of two node grayscale values.
Likewise, being corresponded to since there are one-to-one relationships by voltage value V and storage value Data according to the grayscale value that defines
Define voltage value and the setting gamma curve obtains the process of the corresponding coefficient matrix of each second node grayscale value,
It can be equivalent to and define the corresponding two sections of storage values of voltage value and each second section of setting gamma curve acquisition according to
The process of the corresponding coefficient matrix of point grayscale value.Illustratively, the adjustment factor in coefficient matrix is equal to second node grayscale value
The ratio of corresponding storage value storage value corresponding with grayscale value is defined, one group obtained or several groups of adjustment factors can form one
Coefficient matrix.
Illustratively, as shown in Fig. 2, can be set define grayscale value be 50 when, corresponding storage value Data be 395.It can
With in setting setting gamma curve 201 between inelastic region, i.e. in the second grayscale section the value of second node grayscale value be 50,
45,40,35,30,25,20,15,10,5,0 when, corresponding storage value Data is respectively 395,388,379,368,355,
340,323,300,260,200,0.The corresponding storage value of second node grayscale value storage value corresponding with grayscale value is defined is removed
The available one group of corresponding adjustment factor of method: 1.00,0.98,0.96,0.93,0.90,0.86,0.82,0.76,0.66,
0.51,0.Illustratively, the red pixel cell of the corresponding OLED mould group of gamma curve 201 in Fig. 2 can be set, Gamma is bent
The green pixel cell of the corresponding OLED mould group of line 202, the blue pixel cells of the corresponding OLED mould group of gamma curve 203, then can obtain
To coefficient matrix [CoxR, CoxG, CoxB], wherein the corresponding one group of adjusting system obtained according to setting gamma curve 201 of CoxR
Any one value in number 1.00,0.98,0.96,0.93,0.90,0.86,0.82,0.76,0.66,0.51,0；CoxG and
CoxB respectively corresponds any one value in the one group of adjustment factor obtained according to gamma curve 202, gamma curve 203.
At this point, to calculate j-th of second node grayscale value in the second grayscale section one group the corresponding for usage factor matrix method
The specific formula of corresponding second target storage value Rj, Gj and the Bj of two target voltage values are as follows:
Rj=CoxRj*RGraymin
Gj=CoxGj*GGraymin
Bj=CoxBj*BGraymin
In formula, CoxRj, CoxGj and CoxBj respectively correspond the adjustment factor of j-th of second node grayscale value,
RGraymin, GGraymin and BGraymin are respectively that gamma curve 201,202 and 203 defines grayscale value.
It should be noted that exemplarily only setting obtains second node grayscale during coefficient matrix in the present embodiment
5 are divided between the value of value, the embodiment of the present invention is not construed as limiting this.Meanwhile illustratively adjustment factor being indicated to decimal point
Two afterwards, adjustment factor can also be indicated with the form of multidigit decimal or score.
S160, the corresponding voltage value of the second node grayscale value in second grayscale section is adjusted to corresponding institute
State the second target voltage values.
Specifically, the corresponding voltage value of second node grayscale value in the second grayscale section is adjusted to the second target voltage
Value, can be by being adjusted to above-mentioned Rj, Gj being calculated for the storage value Data in the corresponding register of second node grayscale value
It is realized with Bj.
Optionally, can after the completion of above-mentioned OLED mould group Gamma regulating step, by after adjusting storage value Data (Ri,
Gi, Bi and Rj, Gj, Bj) it is written in OLED mould group in the register of integrated chip and carries out burning, register for example can be
(Electrically-Erasable Programmable Read-Only Memory, the electronics formula of erasing can make carbon copies only EEProm
Read register).
The embodiment of the present invention utilizes the corresponding electricity of first node grayscale value each in the first grayscale section of linear interpolation method adjusting
Pressure is worth to corresponding first target voltage value, and usage factor matrix method adjusts each second node grayscale value pair in the second grayscale section
The voltage value answered overcomes linear interpolation method or Effective Coefficient Matrix Method to the high ash of OLED mould group to corresponding second target voltage values
Rank section and the inconsistent disadvantage of low ash rank section gamma curve adjustment speed, and the first grayscale section by maximum gray value and
It defines grayscale value to be formed, the second grayscale section is formed by defining grayscale value and minimum setting grayscale value, i.e. the first grayscale section phase
It is high gray section for the second grayscale section, it is fast to high gray section gamma curve adjustment speed using linear interpolation method, be
The matrix number method feature fast to low ash rank section gamma curve adjustment speed, the Gamma for increasing OLED mould group adjust efficiency.
Embodiment two
Fig. 3 is the flow chart of another kind OLED mould group Gamma adjusting method provided by Embodiment 2 of the present invention, such as Fig. 3 institute
Show, on the basis of example 1, OLED mould group Gamma adjusting method can also wrap after step 120, before step 130
It includes:
S230, setting grayscale value is obtained according to the maximum gray value and the setting gamma curve.Wherein, described to set
Determine the adjacent grayscale value that grayscale value is the maximum gray value.
Illustratively, by taking 8 bit grayscale values as an example, the grayscale value range of OLED mould group is 0 grayscale to 255 grayscale, then most
Big grayscale value is 255 grayscale.As shown in Fig. 2, setting can be correspondingly arranged according to setting gamma curve 201 and maximum gray value
The size of grayscale value, such as grayscale value can be set as the adjacent grayscale value of maximum gray value according to gamma curve is set,
Such as maximum gray value is 255, then setting grayscale value can be 254.Obtain the corresponding maximum voltage value of the maximum gray value
And the corresponding setting voltage value of the setting grayscale value, and according to the maximum gray value, the setting grayscale value, it is described most
Big voltage value, the setting voltage value and the first node grayscale value obtain the first node grayscale value corresponding first
Target voltage values.
Optionally, the maximum gray can be obtained according to first object brightness and first object colour temperature and is worth corresponding maximum
Voltage value obtains the corresponding setting voltage value of the setting grayscale value according to third object brightness and third target colour temperature.Specifically
, the brightness of OLED mould group can be adjusted to first object brightness, color temperature adjustment to first object colour temperature, OLED mould group at this time
Grayscale value is maximum gray value, and corresponding voltage value is the corresponding maximum voltage value of maximum gray value.It can be by OLED mould
The brightness of group is adjusted to third object brightness, and color temperature adjustment to third target colour temperature, the grayscale value of OLED mould group is to set at this time
Grayscale value, corresponding voltage value are to set the corresponding setting voltage value of grayscale value.
It should be noted that above-mentioned first object brightness and third object brightness can be according to the actual displayed need of OLED mould group
It asks and is configured, above-mentioned first object colour temperature and third target colour temperature meet CIE1931 standard.
Illustratively, with continued reference to Fig. 2, since there are one-to-one relationship, bases with storage value Data by voltage value V
Maximum gray value, setting grayscale value, maximum voltage value, setting voltage value and first node grayscale value obtain first node grayscale
It is worth the process of corresponding first target voltage value, can be equivalent to according to maximum gray value, setting grayscale value, maximum voltage value pair
Maximum storage value, the corresponding setting storage value of setting voltage value and the first node grayscale value answered obtain first node grayscale value
Corresponding first target voltage is worth the process of corresponding first object storage value.It includes red for setting to the property of can be exemplified OLED mould group
Color pixel unit R, green pixel cell G and blue pixel cells B.
It is possible, firstly, to which the brightness of OLED mould group is adjusted to first object brightness, color temperature adjustment is obtained to first object colour temperature
The corresponding maximum storage value of one group of maximum voltage value: R255, G255 and B255 can set maximum gray value as m-th first
Node grayscale value, then the corresponding maximum storage value of maximum voltage value can also indicate are as follows: Rm、GmAnd Bm.It is then possible to by OLED
The brightness of mould group is adjusted to third object brightness, color temperature adjustment to third target colour temperature, obtains that one group of setting voltage value is corresponding to be set
Determine storage value, can be set and set grayscale value as the m-1 first node grayscale value: Rm-1、Gm-1And Bm-1.Setting setting grayscale
Value is respectively RGraym-1、GGraym-1、BGraym-1, maximum gray value is Graym, utilize linear interpolation method, such as linear interpolation
Method calculates maximum gray value and defines the m-2 first node grayscale value Gray in the first grayscale section that grayscale value is formedm-2
Corresponding one group of first target voltage is worth corresponding first object storage value: Rm-2、Gm-2And Bm-2, specific formula for calculation is as follows:
Here it schematically illustrates by the corresponding storage value of m-th of first node grayscale value and the m-1 first node
The corresponding storage value of grayscale value obtains the calculating engineering of the corresponding storage value of the m-2 first node grayscale value.It similarly, can also be with
Using above formula, by the corresponding storage value of the m-1 first node grayscale value and the corresponding storage of the m-2 first node grayscale value
Value obtains the corresponding storage value of the m-3 first node grayscale value, and so on.
It is achievable corresponding to all first node grayscale values in the first grayscale section using above-mentioned recurrence Relation as a result,
The calculating of storage value, and then the corresponding first target voltage value of first node grayscale value is obtained, and will be in the first grayscale section
The corresponding first target voltage value of first node grayscale value regulated value.
The embodiment of the present invention is according to maximum gray value, setting grayscale value, maximum voltage value, setting voltage value and first node
Grayscale value obtains the corresponding first target voltage value of the first node grayscale value and adjusts the first ash using linear interpolation method
To corresponding first target voltage value, usage factor matrix method is adjusted the corresponding voltage value of first node grayscale value in rank section
The corresponding voltage value of second node grayscale value utilizes linear interpolation method to corresponding second target voltage values in second grayscale section
It is fast to high gray section gamma curve adjustment speed, the Effective Coefficient Matrix Method spy fast to low ash rank section gamma curve adjustment speed
Point, the Gamma for equally increasing OLED mould group adjust efficiency.
Embodiment three
Fig. 4 is a kind of structural schematic diagram for OLED mould group Gamma regulating device that the embodiment of the present invention three provides, such as Fig. 4
Shown, on the basis of the above embodiments, which includes:
Maximum gray value obtains module 310, is used for the corresponding maximum gray value of above-mentioned acquisition OLED mould group；
It defines grayscale value and obtains module 320, for defining grayscale according to maximum gray value and setting gamma curve acquisition
Value；
First target voltage value 330 obtains module, for according to above-mentioned maximum gray value, the above-mentioned grayscale value, above-mentioned of defining
Maximum voltage value, above-mentioned voltage value and the above-mentioned first node grayscale value of defining are using the above-mentioned maximum gray value of linear interpolation method acquisition
First target voltage value corresponding with first node grayscale value each in above-mentioned the first grayscale section for defining grayscale value formation；
First target voltage value adjustment module 340, for adjusting the ash of the above-mentioned first node in above-mentioned first grayscale section
Rank is worth corresponding voltage value to corresponding above-mentioned first target voltage value；
Second target voltage values obtain module 350, obtain the above-mentioned grayscale value and minimum of defining for usage factor matrix method
Set corresponding second target voltage values of each second node grayscale value in the second grayscale section that grayscale value is formed；
Second target voltage values adjustment module 360, for adjusting the ash of the above-mentioned second node in above-mentioned second grayscale section
Rank is worth corresponding voltage value to corresponding above-mentioned second target voltage values.
Optionally, Gamma regulating device can also include that maximum voltage value obtains module and defines voltage value acquisition mould
Block, maximum voltage value obtain module and are used to be corresponded to according to first object brightness and the first object colour temperature acquisition maximum gray value
Maximum voltage value；It defines voltage value and obtains module for defining according to the second object brightness and the acquisition of the second target colour temperature
Grayscale value is corresponding to define voltage value.The first target voltage value obtains module and is also used to according to the maximum gray value, institute
State define grayscale value, the maximum voltage value, it is described define voltage value and the first node grayscale value obtain this described first
The corresponding first target voltage value of node grayscale value.
Optionally, Gamma regulating device can also include that setting grayscale value acquisition module and setting voltage value obtain module.
It sets grayscale value and obtains module for obtaining setting grayscale value according to the maximum gray value and the setting gamma curve；Its
In, the grayscale value that sets is the adjacent grayscale value of the maximum gray value；It sets voltage value and obtains module for according to third
Object brightness and third target colour temperature obtain the corresponding setting voltage value of the setting grayscale value；The first target voltage value obtains
Modulus block be also used to according to the maximum gray value, the setting grayscale value, the maximum voltage value, the setting voltage value and
The first node grayscale value obtains the corresponding first target voltage value of the first node grayscale value.
Optionally, Gamma regulating device can also include that coefficient matrix obtains module, and coefficient matrix obtains module and is used for root
Each second node grayscale value pair is obtained according to corresponding voltage value and the setting gamma curve of defining of grayscale value that define
The coefficient matrix answered.
The embodiment of the present invention utilizes the corresponding electricity of first node grayscale value each in the first grayscale section of linear interpolation method adjusting
Pressure is worth to corresponding first target voltage value, and usage factor matrix method adjusts each second node grayscale value pair in the second grayscale section
The voltage value answered overcomes linear interpolation method or Effective Coefficient Matrix Method to the high ash of OLED mould group to corresponding second target voltage values
Rank section and the inconsistent disadvantage of low ash rank section gamma curve adjustment speed, and the first grayscale section by maximum gray value and
It defines grayscale value to be formed, the second grayscale section is formed by defining grayscale value and minimum setting grayscale value, i.e. the first grayscale section phase
It is high gray section for the second grayscale section, it is fast to high gray section gamma curve adjustment speed using linear interpolation method, be
The matrix number method feature fast to low ash rank section gamma curve adjustment speed, the Gamma for increasing OLED mould group adjust efficiency.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of OLED mould group Gamma adjusting method characterized by comprising
Obtain the corresponding maximum gray value of the OLED mould group；
Grayscale value is defined according to the maximum gray value and setting gamma curve acquisition；
The maximum gray value and the grayscale value that defines form the first grayscale section, and first grayscale section includes multiple the
One node grayscale value obtains the corresponding first target voltage value of each first node grayscale value using linear interpolation method；
The corresponding voltage value of the first node grayscale value in first grayscale section is adjusted to corresponding first mesh
Mark voltage value；
Described to define grayscale value and minimum setting grayscale value forms the second grayscale section, second grayscale section includes multiple the
Two node grayscale values, usage factor matrix method obtain corresponding second target voltage values of each second node grayscale value；
The corresponding voltage value of the second node grayscale value in second grayscale section is adjusted to corresponding second mesh
Mark voltage value.
2. OLED mould group Gamma adjusting method according to claim 1, which is characterized in that described to utilize linear interpolation method
Obtaining the corresponding first target voltage value of each first node grayscale value includes:
It obtains the corresponding maximum voltage value of the maximum gray value and described defines that grayscale value is corresponding to define voltage value；
According to the maximum gray value, described define grayscale value, the maximum voltage value, described defines voltage value and described first
Node grayscale value obtains the corresponding first target voltage value of the first node grayscale value.
3. OLED mould group Gamma adjusting method according to claim 2, which is characterized in that described to obtain the maximum ash
The corresponding maximum voltage value of rank value and the corresponding voltage value that defines of grayscale value that defines include:
The maximum gray, which is obtained, according to first object brightness and first object colour temperature is worth corresponding maximum voltage value；
According to the second object brightness and the second target colour temperature obtain described in define that grayscale value is corresponding to define voltage value.
4. OLED mould group Gamma adjusting method according to claim 1, which is characterized in that utilize linear interpolation described
Method obtains before the corresponding first target voltage value of each first node grayscale value further include:
Setting grayscale value is obtained according to the maximum gray value and the setting gamma curve；Wherein, it is described set grayscale value as
The adjacent grayscale value of the maximum gray value；
The utilization linear interpolation method obtains the corresponding first target voltage value of each first node grayscale value
Obtain the corresponding maximum voltage value of the maximum gray value and the corresponding setting voltage value of the setting grayscale value；
According to the maximum gray value, the setting grayscale value, the maximum voltage value, the setting voltage value and described first
Node grayscale value obtains the corresponding first target voltage value of the first node grayscale value.
5. OLED mould group Gamma adjusting method according to claim 4, which is characterized in that described to obtain the maximum ash
The corresponding maximum voltage value of rank value and the corresponding setting voltage value of the setting grayscale value include:
The maximum gray, which is obtained, according to first object brightness and first object colour temperature is worth corresponding maximum voltage value；
The corresponding setting voltage value of the setting grayscale value is obtained according to third object brightness and third target colour temperature.
6. OLED mould group Gamma adjusting method according to claim 1, which is characterized in that the usage factor matrix method
Obtaining corresponding second target voltage values of each second node grayscale value includes:
Each second node ash is obtained according to corresponding voltage value and the setting gamma curve of defining of grayscale value that define
Rank is worth corresponding coefficient matrix；
Corresponding second target voltage of the second node grayscale value is obtained according to the coefficient matrix and the voltage value that defines
Value.
7. a kind of OLED mould group Gamma regulating device characterized by comprising
Maximum gray value obtains module, for obtaining the corresponding maximum gray value of the OLED mould group；
It defines grayscale value and obtains module, for defining grayscale value according to the maximum gray value and setting gamma curve acquisition；
First target voltage value obtains module, defines grayscale with described for obtaining the maximum gray value using linear interpolation method
It is worth the corresponding first target voltage value of each first node grayscale value in the first grayscale section formed；
First target voltage value adjustment module, it is corresponding for adjusting the first node grayscale value in first grayscale section
Voltage value to the corresponding first target voltage value；
Second target voltage values obtain module, for defining grayscale value and minimum setting grayscale described in the acquisition of usage factor matrix method
It is worth corresponding second target voltage values of each second node grayscale value in the second grayscale section formed；
Second target voltage values adjustment module, it is corresponding for adjusting the second node grayscale value in second grayscale section
Voltage value to corresponding second target voltage values.
8. OLED mould group Gamma regulating device according to claim 7, which is characterized in that further include:
Maximum voltage value obtains module, for obtaining the maximum gray value pair according to first object brightness and first object colour temperature
The maximum voltage value answered；
It defines voltage value and obtains module, for defining grayscale value pair according to the second object brightness and the acquisition of the second target colour temperature
That answers defines voltage value；
The first target voltage value obtain module be also used to according to the maximum gray value, it is described define grayscale value, it is described most
Big voltage value described defines voltage value and the first node grayscale value obtains the first node grayscale value corresponding first
Target voltage values.
9. OLED mould group Gamma regulating device according to claim 7, which is characterized in that further include:
It sets grayscale value and obtains module, for obtaining setting grayscale according to the maximum gray value and the setting gamma curve
Value；Wherein, the grayscale value that sets is the adjacent grayscale value of the maximum gray value；
It sets voltage value and obtains module, for obtaining the setting grayscale value pair according to third object brightness and third target colour temperature
The setting voltage value answered；
The first target voltage value obtain module be also used to according to the maximum gray value, the setting grayscale value, it is described most
Big voltage value, the setting voltage value and the first node grayscale value obtain the first node grayscale value corresponding first
Target voltage values.
10. OLED mould group Gamma regulating device according to claim 7, which is characterized in that further include:
Coefficient matrix obtains module, and for defining according to, grayscale value is corresponding to define voltage value and setting Gamma song
Line obtains the corresponding coefficient matrix of each second node grayscale value.
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