CN105702215B - Gamma electric voltage bearing calibration and device - Google Patents
Gamma electric voltage bearing calibration and device Download PDFInfo
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- CN105702215B CN105702215B CN201610267049.2A CN201610267049A CN105702215B CN 105702215 B CN105702215 B CN 105702215B CN 201610267049 A CN201610267049 A CN 201610267049A CN 105702215 B CN105702215 B CN 105702215B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Picture Signal Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a kind of gamma electric voltage bearing calibration and devices, are related to display field, can solve the problems, such as that the existing gamma correction time is long, can improve production efficiency.The gamma electric voltage bearing calibration of the present invention, including：S1, the corresponding data voltage of feature grayscale point is obtained：S2, obtain and each tie up the corresponding gamma register value of a grayscale；S3, fine tuning：Each gamma register value for tying up a grayscale is input to the display module, and the optical parameter of each grayscale is finely adjusted on this basis；S4, test：The gamma curve of the display module is tested, and is compared with target gamma curve, if being unsatisfactory for product specification requirement, continues to execute step S3, until the display module meets product specification requirement.
Description
Technical field
The present invention relates to display field more particularly to a kind of gamma electric voltage bearing calibration and devices.
Background technology
With AMOLED (Active-matrix organic light emitting diode, the organic hair of active matrix
Near-infrafed photodiodes) display technology development, more and more electronic products begin to use AMOLED display screens.But AMOLED is shown
Screen in process of production, still has some difficult points needs to overcome, one of them is exactly the optical parameter adjusting of AMOLED screens.
Since AMOLED display screens are using current mode drive, and it drives the operating point of thin film transistor (TFT) to be located at transfer spy
Property the range of linearity, operating voltage range is relatively narrow, small to several millivolts so AMOLED very sensitive to the variation of data voltage
Difference can also be embodied in display effect, and on the other hand either AMOLED display panels or driving chip produces work
All it is difficult to ensure that the difference of product characteristic is limited in millivolt level in skill, therefore, it is necessary to carry out optics to every display screen module
Parameter adjustment, that is, every display screen module are required for carrying out gamma electric voltage correction.
The method that AMOLED products carry out gamma electric voltage correction at present is (to correspond to each grayscale of tying up in driving chip
Adjustable grayscale, also known as grayscale are tied up a little) the optical parameters such as brightness, chromaticity coordinates be adjusted to corresponding desired value, but current high score
Resolution screen module ties up a grayscale generally up to tens, and each tie up a grayscale often needs repeatedly adjustment again, therefore carries out
The time of gamma correction is very long, influences production efficiency.
The content of the invention
The present invention provides a kind of gamma electric voltage bearing calibration and device, solves the problems, such as that the existing gamma correction time is long,
Production efficiency can be improved.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
A kind of gamma electric voltage bearing calibration, including：S1, the corresponding data voltage of feature grayscale point is obtained：In display module
On, the corresponding optical parameter of the feature grayscale point is adjusted to desired value, the feature grayscale point is corresponding after obtaining adjustment
Data voltage, the feature grayscale point are chosen from tying up in a grayscale；S2, obtain and each tie up the corresponding gamma register of a grayscale
Value：According to the data voltage of the feature grayscale point, an ash is tied up by the way that interpolation method acquisition is other in addition to the feature grayscale point
The corresponding data voltage of rank then according to the data voltage formula of driving chip, calculates and each ties up the corresponding gamma of a grayscale
Register value；S3, fine tuning：Each gamma register value for tying up a grayscale is input to the display module, and in this base
Each optical parameter for tying up a grayscale is finely adjusted on plinth；S4, test：Test the gamma curve of the display module, and with
Target gamma curve is compared, if being unsatisfactory for product specification requirement, step S3 is continued to execute, until the display module
Meet product specification requirement.
Optionally, highest grayscale L255 and centre grayscale L128 are chosen in grayscale as feature grayscale from tying up in step S1
Point.
Specifically, in display module, the corresponding optical parameter of the feature grayscale point is adjusted to desired value, including：
The desired value of optical parameter according to corresponding to the target gamma curve calculates the feature grayscale point；Adjust the feature grayscale
The corresponding gamma register value of point, while tested by color analysis instrument after the gamma register value inputs the display module
Optical parameter, until adjusting the optical parameter to the desired value.
Specifically, in step S2 the corresponding number of a grayscale is tied up by the way that interpolation method acquisition is other in addition to the feature grayscale point
According to voltage, including：It is special according to the relation of the data voltage and grayscale of the data voltage of the feature grayscale point and display module
Property, fitting draws interpolating function；According to the interpolating function, obtain other grayscale of tying up in addition to the feature grayscale point and correspond to
Data voltage.
Further, step S3 is further included：The corresponding gamma register value of low grayscale is compensated.
Specifically, the optical parameter includes brightness and chromaticity coordinates.
The present invention also provides a kind of gamma electric voltage means for correcting, suitable for bearing calibration described in any one of the above embodiments, including：
Correction control apparatus, lighting machine and color analysis instrument, the correction control apparatus, for feature grayscale point to be passed through the lighting
Machine is sent to display module, and the feature grayscale point is chosen from tying up in a grayscale；The correction control apparatus is additionally operable to receive institute
The measurement result of color analysis instrument is stated, and according to measurement result the driving chip of the display module is controlled to adjust the feature ash
The gamma register value of rank point, the optical parameter for making the display module are consistent with desired value；The correction control apparatus is also used
In when the optical parameter for judging the display module is consistent with the desired value, the corresponding data of the feature grayscale point are obtained
Voltage；And according to the data voltage of the feature grayscale point, other in addition to the feature grayscale point tie up is obtained by interpolation method
The corresponding data voltage of point grayscale then according to the data voltage formula of driving chip, calculates that each to tie up a grayscale corresponding
Gamma register value；The correction control apparatus is additionally operable to each gamma register value for tying up a grayscale passing through the point
Lamp machine is input to the display module, and control on this basis the display module to each optical parameter for tying up a grayscale into
Row fine tuning, until the display module meets product specification requirement；Lighting machine, with display module and the correction control apparatus phase
Connect, for providing power supply and control signal to display module；Color analysis instrument is connected with the correction control apparatus, for surveying
It tries the gamma register value and inputs the optical parameter after the display module.
Optionally, the correction control apparatus is computer.
Optionally, the correction control apparatus, including：First computing unit, for calculating institute according to target gamma curve
State the desired value of optical parameter corresponding to feature grayscale point；Adjustment unit, for the optics according to the measured by color analyzer
Parameter controls the display module to adjust the corresponding gamma register value of the feature grayscale point, until the light that will be measured
It is consistent with the desired value to learn parameter；Acquiring unit, described in being obtained when the optical parameter is consistent with the desired value
The corresponding data voltage of feature grayscale point.
Optionally, the correction control apparatus, including：Fitting unit, for the data electricity according to the feature grayscale point
Pressure and the data voltage of the display module and the relation property of grayscale, fitting draw interpolating function；Second computing unit is used
Other in addition to the feature grayscale point the corresponding data voltage of a grayscale is tied up according to the interpolating function, obtaining；3rd meter
Unit is calculated, for the data voltage formula according to driving chip, calculates and each ties up the corresponding gamma register value of a grayscale.
Gamma electric voltage bearing calibration provided by the invention and device choose several feature grayscale points, so from tying up in a grayscale
Optical parameter adjustment is carried out for feature grayscale point in display module afterwards, treats that optical parameter is adjusted to desired value and obtains its correspondence
Data voltage；Then according to the data voltage of feature grayscale point, obtained by interpolation method and other tie up the corresponding data of a grayscale
Voltage, further according to the data voltage formula of driving chip, counter release each ties up the corresponding gamma register value of a grayscale；Finally will
Each gamma register value for tying up a grayscale is input to display module, and on this basis to each optical parameter for tying up a grayscale
It is finely adjusted, display module is made to meet product specification requirement, it, can also so without being adjusted one by one to being directed to all grayscale of tying up
Greatly reduce adjustment number, quickly obtain target gamma register value, can largely reduce the time of gamma correction, carry
High efficiency.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is gamma electric voltage bearing calibration flow chart one provided in an embodiment of the present invention；
Fig. 2 is gamma electric voltage bearing calibration flowchart 2 provided in an embodiment of the present invention；
Fig. 3 is the contrast curve of the data voltage and actual value gone out in the embodiment of the present invention by interpolation calculation；
Fig. 4 is gamma electric voltage means for correcting schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without making creative work
Embodiment belongs to the scope of protection of the invention.
Embodiment
The embodiment of the present invention provides a kind of gamma electric voltage bearing calibration, as shown in Figure 1, including：
S1, the corresponding data voltage of feature grayscale point is obtained：In display module, by the corresponding light of the feature grayscale point
Parameter adjustment is learned to desired value, obtains the corresponding data voltage of the feature grayscale point after adjusting, the feature grayscale point is from tying up
It is chosen in point grayscale；
Gamma curve is adjusted, a small amount of grayscale can be chosen as point of adjustment, for example, the system of 8bit color depths, grayscale arrives for 0
255,255,223,191,128,107,64,35,15 and 0 can be such as chosen, these points are just referred to as tying up a grayscale.In this step from
It ties up and several conduct feature grayscale points is chosen in a grayscale, following operation is then performed to each feature grayscale point：In display module
The corresponding gamma register value of feature grayscale point is adjusted, while the input of gamma register value is tested by color analysis instrument and shows mould
The optical parameters such as brightness, chromaticity coordinates after group, until adjusting these optical parameters to desired value (product specification during by designing
Determine), obtain the corresponding data voltage of feature grayscale point after adjustment.
It, can be first in this step if providing display module to be intended to by correcting the gamma curve (i.e. target gamma curve) obtained
The desired value of optical parameter according to corresponding to target gamma curve calculates each feature grayscale point, will be each then in display module
The corresponding optical parameter of feature grayscale point is adjusted to desired value, obtains the corresponding data voltage of each feature grayscale point after adjustment.
Certainly, the embodiment of the present invention is not limited to above-mentioned optical parameter method of adjustment and device or this field
Other arbitrary implementation methods and device known to technical staff, as long as the corresponding optical parameter of each feature grayscale point can be adjusted
To desired value and obtain corresponding data voltage.
In addition, it is necessary to explanation, several feature grayscale points, specific choice are used as from tying up to choose in a grayscale in this step
Which ties up a grayscale as feature grayscale point, and the present embodiment does not limit, and passes through interpolation method as long as can meet in the next step
Obtain other requirements for tying up the corresponding data voltage of a grayscale.If data voltage is changed linearly with grayscale, in principle
Select two feature grayscale points, it is preferable that this step S1 chooses highest grayscale L255 and intermediate grayscale from tying up in grayscale
L128 is as feature grayscale point, and accuracy is higher when passing through interpolation calculation.
S2, obtain and each tie up the corresponding gamma register value of a grayscale：According to the data voltage of feature grayscale point, by inserting
The acquisition of value method is other in addition to feature grayscale point to tie up the corresponding data voltage of a grayscale, then according to the data voltage of driving chip
Formula calculates and each ties up the corresponding gamma register value of a grayscale；
Specifically, first according to the data voltage of feature grayscale point and the data voltage of display module and ash in this step
The relation property of rank, fitting draw interpolating function；Further according to the interpolating function, the corresponding data electricity of a grayscale is respectively tied up in acquisition
Pressure；Finally, according to the data voltage formula (i.e. the correspondence of grayscale and data voltage) of driving chip, each tie up a little is calculated
The corresponding gamma register value of grayscale.
For example, if data voltage is changed linearly with grayscale, the interpolating function fitted is linear function, passes through feature
Grayscale point and its data voltage calculate the coefficient of linear function, so as to draw interpolating function, are respectively tied up a little according to interpolating function acquisition
The corresponding data voltage of grayscale, finally counter release each ties up the corresponding gamma register value of a grayscale accordingly.
S3, fine tuning：Each gamma register value for tying up a grayscale that previous step is obtained is input to display module, and
Each optical parameter for tying up a grayscale is finely adjusted on the basis of this；
Each gamma register value for tying up a grayscale that this step obtains previous step is input to display module one by one, together
When the corresponding optical parameter of display module tested by color analysis instrument, adjust this and tie up the corresponding gamma register value of a grayscale
(step is known as finely tuning), optical parameter is tried one's best, and it is consistent with desired value to adjust.Optical parameter generally comprises brightness and color is sat
Mark, therefore trim step includes：By brightness adjustment to object brightness, and chromaticity coordinates is adjusted to consistent with target color coordinates.Mesh
Mark brightness and target color coordinates are determined by product specification, are generally pre-set.
S4, test：The gamma curve of the display module is tested, and is compared with target gamma curve, if discontented
Sufficient product specification requirement, then continue to execute step S3, until the display module meets product specification requirement.
It is tied up for each after a grayscale is finely adjusted one by one, the gamma curve of display module is tested, and the gal that will be measured
Horse curve is compared with target gamma curve, if meeting product specification requirement, gamma correction terminates；If it is unsatisfactory for producing
Product specification requirement then continues to execute step S3 and each grayscale of tying up is finely adjusted, until display module meets product specification and wants
It asks.
Gamma electric voltage bearing calibration provided by the invention respectively ties up a grayscale according to feature grayscale point by interpolation calculation acquisition
Gamma register value, be finely adjusted again on this basis, can quickly obtain target gamma register value, reduce gamma correction
Time, improve production efficiency.
As shown in Fig. 2, the present invention also provides another gamma electric voltage bearing calibration, including：
S101, the corresponding data voltage of feature grayscale point is obtained；
The corresponding data voltage of a grayscale is tied up in S102, interpolation method acquisition；
S103, the corresponding gamma register value of grayscale each is tied up according to counter push away of luma data voltage equation；
S104, low gray scale compensation；
S105, gamma fine tuning；
S106, check gamma curve whether OK, if the gamma curve measured be unsatisfactory for product specification requirement, continue to hold
Row step S105, until display module meets product specification requirement.
Gamma electric voltage bearing calibration provided by the invention, and differing only in for a upper embodiment, step S103 according to
Luma data voltage equation is counter release it is each tie up the corresponding gamma register value of a grayscale after, rule of thumb or preposition experiment
Speculate that the low luma data voltage obtained by interpolation calculation and actual value deviation are larger, in step S105 input display module fine tunings
Before, compensation is adjusted to low luma data voltage in advance.As shown in figure 3,0~80 data voltage calculated value of grayscale and reality
It is larger to be worth deviation, is adjusted in advance, to compensate deviation, shortens the time of step S105 fine tunings, is further reduced gamma correction
Time, improve production efficiency.
As shown in figure 4, the present embodiment also provides a kind of gamma electric voltage means for correcting, suitable for the school described in any of the above-described kind
Correction method specifically includes：Correction control apparatus 11, lighting machine 12 and color analysis instrument 13, correction control apparatus 11, for by spy
Sign grayscale point is sent to display module 14 by lighting machine 12, and feature grayscale point is chosen from tying up in a grayscale；Correction control apparatus
11 are additionally operable to receive the measurement result of color analysis instrument 13, and according to measurement result the driving chip of display module 14 are controlled to adjust
The gamma register value of feature grayscale point, the optical parameter for making display module 14 are consistent with desired value；Correction control apparatus 11 is also
For when the optical parameter for judging display module 14 is consistent with desired value, obtaining the corresponding data voltage of feature grayscale point；And
According to the data voltage of feature grayscale point, the corresponding data of a grayscale are tied up by the way that interpolation method acquisition is other in addition to feature grayscale point
Voltage then according to the data voltage formula of driving chip, calculates and each ties up the corresponding gamma register value of a grayscale；Correction
Control device 11 is additionally operable to each gamma register value for tying up a grayscale being input to display module 14 by lighting machine 12, and
On the basis of this display module 14 is controlled to be finely adjusted each optical parameter for tying up a grayscale, until display module 14 meets product
Specification requirement；Lighting machine 12 is connected with display module 14 and correction control apparatus 11, for display module 14 provide power supply and
Control signal；Color analysis instrument 13 is connected with correction control apparatus 11, for testing gamma register value input display module 14
Optical parameter afterwards.
In the present embodiment, correction control apparatus 11 controls display module 14 to show grayscale, color analysis by lighting machine 12
The optical parameters such as brightness, chromaticity coordinates during the test display grayscale of display module 14 of instrument 13, the measurement result of color analysis instrument 13
Correction control apparatus 11 is inputted, correction control apparatus 11 controls display module 14 to adjust the corresponding gamma register value of the grayscale,
Make the optical parameters such as 14 brightness of display module, chromaticity coordinates consistent with desired value.Above-mentioned gamma electric voltage means for correcting presses the present embodiment
The method carries out gamma electric voltage timing, first passes through matching somebody with somebody for correction control apparatus 11, lighting machine 12 and color analysis instrument 13
It closes, the corresponding optical parameter of feature grayscale point is adjusted to desired value in display module, and obtain feature grayscale point after adjustment
Corresponding data voltage；Then, correction control apparatus 11 is obtained by interpolation method except institute according to the data voltage of feature grayscale point
State it is other outside feature grayscale point tie up the corresponding data voltage of a grayscale, calculated further according to the data voltage formula of driving chip
It is each to tie up the corresponding gamma register value of a grayscale；Correction control apparatus 11 ties up the corresponding gamma register value of a grayscale by each
Display module is sent by lighting machine 12 to be shown, each optical parameter for tying up a grayscale is finely adjusted on this basis；
It finally checks whether the gamma curve of display module meets product specification requirement, meets then gamma electric voltage correction course and terminate, no
Meet then correction control apparatus 11 to continue that display module is controlled to be finely adjusted.
Preferably, correction control apparatus 11 is computer, and certainly, correction control apparatus 11 can also be other with programming
The logical device of function.
Specifically, correction control apparatus 11 includes：First computing unit, for calculating feature ash according to target gamma curve
The desired value of optical parameter corresponding to rank point；Adjustment unit, for the optical parameter measured according to color analysis instrument 13, control is aobvious
Show that module 14 adjusts the corresponding gamma register value of feature grayscale point, until the optical parameter measured is consistent with desired value；It obtains
Unit is taken, for obtaining the corresponding data voltage of the feature grayscale point in the optical parameter and the consistent desired value.
The present embodiment correction control apparatus 11 controls the optical parameter of display module adjustment feature grayscale point, and in Optical Parametric
Acquisition feature grayscale point corresponding data voltage when number is consistent with desired value, to go out other to tie up an ash subsequently through interpolation calculation
The gamma register value of rank.
Correction control apparatus 11 further comprises：Fitting unit, for the data voltage according to feature grayscale point and
The data voltage of display module and the relation property of grayscale, fitting draw interpolating function；Second computing unit, for according to
Interpolating function obtains and other in addition to the feature grayscale point ties up the corresponding data voltage of a grayscale；3rd computing unit, is used for
According to the data voltage formula of driving chip, calculate and each tie up the corresponding gamma register value of a grayscale.
The present embodiment correction control apparatus 11 goes out other gamma register values for tying up a grayscale by interpolation calculation, can be fast
Speed obtains target gamma register value, can largely reduce the time of gamma correction, improves production efficiency.
The embodiment of the present invention provides gamma electric voltage means for correcting, can quickly obtain target gamma register value, reduces aobvious
Show the module gamma correction time, improve production efficiency.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all should by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of gamma electric voltage bearing calibration, which is characterized in that including：
S1, the corresponding data voltage of feature grayscale point is obtained：In display module, by the corresponding Optical Parametric of the feature grayscale point
Number is adjusted to desired value, obtains the corresponding data voltage of the feature grayscale point after adjustment, and the feature grayscale point is from tying up an ash
It is chosen in rank；
S2, obtain and each tie up the corresponding gamma register value of a grayscale：According to the data voltage of the feature grayscale point, by inserting
The acquisition of value method is other in addition to the feature grayscale point to tie up the corresponding data voltage of a grayscale, then according to the data of driving chip
Voltage equation calculates and each ties up the corresponding gamma register value of a grayscale；
S3, fine tuning：Each gamma register value for tying up a grayscale is input to the display module, and it is right on this basis
Each optical parameter for tying up a grayscale is finely adjusted；
S4, test：The gamma curve of the display module is tested, and is compared with target gamma curve, if being unsatisfactory for producing
Product specification requirement then continues to execute step S3, until the display module meets product specification requirement.
2. bearing calibration according to claim 1, which is characterized in that from tying up in a grayscale selection highest grayscale in step S1
L255 and centre grayscale L128 are as feature grayscale point.
3. bearing calibration according to claim 1, which is characterized in that in display module, by the feature grayscale point pair
The optical parameter answered is adjusted to desired value, including：
The desired value of optical parameter according to corresponding to the target gamma curve calculates the feature grayscale point；
The corresponding gamma register value of the feature grayscale point is adjusted, while the gamma register is tested by color analysis instrument
Value inputs the optical parameter after the display module, until adjusting the optical parameter to the desired value.
4. bearing calibration according to claim 1, which is characterized in that obtained in step S2 by interpolation method except the feature
It is other outside grayscale point to tie up the corresponding data voltage of a grayscale, including：
According to the data voltage of the feature grayscale point and the data voltage of display module and the relation property of grayscale, it is fitted
Go out interpolating function；According to the interpolating function, obtain and other in addition to the feature grayscale point tie up the corresponding data electricity of a grayscale
Pressure.
5. bearing calibration according to claim 1, which is characterized in that step S3 is further included：Gamma corresponding to low grayscale
Register value compensates.
6. according to claim 1-5 any one of them bearing calibrations, which is characterized in that the optical parameter includes brightness and color
Coordinate.
7. a kind of gamma electric voltage means for correcting, suitable for claim 1-6 any one of them bearing calibrations, which is characterized in that
Including：Correction control apparatus, lighting machine and color analysis instrument,
The correction control apparatus, for feature grayscale point to be sent to display module, the feature ash by the lighting machine
Rank point is chosen from tying up in a grayscale；The correction control apparatus is additionally operable to receive the measurement result of the color analysis instrument, and root
According to measurement result the driving chip of the display module is controlled to adjust the gamma register value of the feature grayscale point, made described aobvious
Show that the corresponding optical parameter of the feature grayscale point of module is consistent with desired value；The correction control apparatus is additionally operable to judging
When the optical parameter of the display module is consistent with the desired value, the corresponding data voltage of the feature grayscale point is obtained；And
According to the data voltage of the feature grayscale point, a grayscale pair is tied up by the way that interpolation method acquisition is other in addition to the feature grayscale point
The data voltage answered then according to the data voltage formula of driving chip, calculates and each ties up the corresponding gamma deposit of a grayscale
Device value；The correction control apparatus is additionally operable to input each gamma register value for tying up a grayscale by the lighting machine
To the display module, and the display module is controlled to be finely adjusted each optical parameter for tying up a grayscale on this basis,
Until the display module meets product specification requirement；
Lighting machine is connected with display module and the correction control apparatus, for providing power supply and control signal to display module；
Color analysis instrument is connected with the correction control apparatus, and the display mould is inputted for testing the gamma register value
Optical parameter after group.
8. gamma electric voltage means for correcting according to claim 7, which is characterized in that the correction control apparatus is calculating
Machine.
9. gamma electric voltage means for correcting according to claim 7, which is characterized in that the correction control apparatus, including：
First computing unit, for the target of the optical parameter according to corresponding to the target gamma curve calculating feature grayscale point
Value；
Adjustment unit for the optical parameter according to the measured by color analyzer, controls the driving chip of the display module
The corresponding gamma register value of the feature grayscale point is adjusted, until by the optical parameter measured and the desired value one
It causes；
Acquiring unit, for obtaining the corresponding data of the feature grayscale point in the optical parameter and the consistent desired value
Voltage.
10. according to claim 7-9 any one of them gamma electric voltage means for correctings, which is characterized in that the Corrective control dress
It puts, including：
Fitting unit, for the data voltage according to the feature grayscale point and the data voltage of display module and the pass of grayscale
It is characteristic, fitting draws interpolating function；
Second computing unit other in addition to the feature grayscale point ties up a grayscale pair for according to the interpolating function, obtaining
The data voltage answered；
3rd computing unit for the data voltage formula according to driving chip, calculates and each ties up the corresponding gamma of a grayscale
Register value.
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