CN105096896B - Gamma electric voltage adjusting method and device - Google Patents
Gamma electric voltage adjusting method and device Download PDFInfo
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- CN105096896B CN105096896B CN201510601710.4A CN201510601710A CN105096896B CN 105096896 B CN105096896 B CN 105096896B CN 201510601710 A CN201510601710 A CN 201510601710A CN 105096896 B CN105096896 B CN 105096896B
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Abstract
The invention provides a kind of gamma electric voltage adjusting method and device, methods described to include：Obtain one group of driving voltage corresponding with some preset gray scale values；Display module is driven with this group of driving voltage；Obtain the brightness value of each sub-regions of the display module；According to this group of driving voltage and the corresponding relation of preset gray scale value, and the brightness value of each sub-regions of display module, current gamma curve is fitted；According to default ideal gamma curve and the gamma curve being currently fitted, obtain one group it is corresponding with some preset gray scale values adjust after driving voltage；The subregion corresponding to the driving voltage driving display module after adjustment, obtains the present intensity value per sub-regions, and driving voltage corresponding with the subregion is adjusted with the relation of the target brightness value of the subregion according to the present intensity value of every sub-regions.Gamma electric voltage adjusting method provided by the invention can effectively improve the degree of accuracy and the speed of regulation, the gamma electric voltage regulation of product suitable for volume production.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of gamma electric voltage adjusting method and device.
Background technology
Existing gamma voltage adjusting methods monitor brightness in real time, it is necessary to using luminance meter while voltage is changed
To find suitable gamma voltages, such adjusting method is relatively simple, and ratio of precision is higher, it is not necessary to special
Equipment, but it is relatively time-consuming, and need more than more than one people to cooperate and can complete, be not suitable for volume production.
The content of the invention
For in the prior art the defects of, the present invention provides a kind of gamma electric voltage adjusting method and device, existing to solve
Gamma electric voltage adjusting method be not suitable for volume production the problem of.
In order to solve the above technical problems, the present invention provides following technical scheme：
In a first aspect, the invention provides a kind of gamma electric voltage adjusting method, including：
According to default driving voltage and the corresponding relation of GTG, obtain one group it is one-to-one with some preset gray scale values
Driving voltage；
Display module is driven with this group of driving voltage, wherein, each voltage in this group of driving voltage is described for driving
Subregion corresponding to display module；
Obtain the brightness value of each sub-regions of the display module；
According to the corresponding relation of this group of driving voltage and preset gray scale value, each voltage in this group of driving voltage with it is described
The corresponding relation of each sub-regions of display module, and the brightness value of each sub-regions of the display module, are fitted current gal
Horse curve；
According to default ideal gamma curve and the gamma curve being currently fitted, one group and some preset gray scales are obtained
Driving voltage after the one-to-one adjustment of value；
It is corresponding with the driving voltage driving display module after some preset gray scale values correspondingly adjustment with one group
Subregion, obtain the present intensity value per sub-regions, judge the mesh of present intensity value and the subregion per sub-regions
The relation of brightness value is marked, if the present intensity value of certain sub-regions is less than the target brightness value of the subregion, is heightened and the son
Driving voltage corresponding to region, otherwise turn down driving voltage corresponding with the subregion.
Wherein, it is described according to default ideal gamma curve and the gamma curve being currently fitted, intervene if obtaining with described
If driving voltage after grey decision-making adjustment correspondingly, including：
Found in default ideal gamma curve and some one-to-one target brightness values of preset gray scale value；
In the gamma curve being currently fitted, find and one-to-one some first GTGs of the target brightness value
Value；
It is corresponding with target brightness value according to preset gray scale value and the corresponding relation of target brightness value, and the first grey decision-making
Relation, determine the corresponding relation of preset gray scale value and the first grey decision-making；
According to the default driving voltage and the corresponding relation of GTG, obtain one-to-one with first grey decision-making
Driving voltage；
According to the preset gray scale value and the corresponding relation of first grey decision-making, and driving voltage and the first grey decision-making
Corresponding relation, obtain and some preset gray scale values correspondingly adjustment after driving voltage.
Wherein, the brightness value for obtaining each sub-regions of display module, including：
The brightness value of a certain subregion of display module is obtained using point type luminance meter；
The brightness that the display module difference subregion is obtained using charge coupled cell equipment is changed；
Changed according to the brightness of the brightness value of a certain subregion of the display module and different subregions, obtained described aobvious
Show the brightness value of each sub-regions of module.
Wherein, the display module is Organic Light Emitting Diode module or liquid crystal display die set.
Wherein, the quantity of the preset gray scale value is 9~12.
Second aspect, present invention also offers a kind of gamma electric voltage adjusting means, including：
First acquisition unit, for the corresponding relation according to default driving voltage and GTG, if obtaining one group with intervening
If the one-to-one driving voltage of grey decision-making；
Driver element, one group of driving voltage for being obtained using the first acquisition unit drive display module, wherein,
Each voltage in this group of driving voltage is used to drive subregion corresponding to the display module；
Second acquisition unit, for utilizing one group of driving voltage of first acquisition unit acquisition in the driver element
After driving display module, the brightness value of each sub-regions of the display module is obtained；
Curve matching unit, for one group of driving voltage and the preset gray scale value obtained according to the first acquisition unit
Corresponding relation, each voltage and each sub-regions of the display module in one group of driving voltage that the driver element obtains
Corresponding relation, and the brightness value of each sub-regions of the display module of second acquisition unit acquisition, are fitted current
Gamma curve；
3rd acquiring unit, for the current gal according to default ideal gamma curve and curve matching unit fitting
Horse curve, obtain one group and driving voltage after some preset gray scale values correspondingly adjustment；
The driver element, it is additionally operable to one group and some preset gray scale values obtained according to the 3rd acquiring unit
Driving voltage driving display module after one-to-one adjustment, wherein, each voltage in this group of driving voltage is used to drive institute
State subregion corresponding to display module；
4th acquiring unit, if for obtained in the driver element according to the 3rd acquiring unit one group with it is described
Intervention set grey decision-making correspondingly adjustment after driving voltage driving display module after, obtain each sub-district of the display module
The brightness value in domain；
Comparing unit, the brightness value of each sub-regions of display module obtained for the 4th acquiring unit with it is each
The size of the target brightness value of sub-regions；
Adjustment unit, the target that the brightness value for determining a certain subregion in the comparing unit is less than the subregion are bright
During angle value, driving voltage corresponding with the subregion is heightened；
The adjustment unit, it is additionally operable to determine that the brightness value of a certain subregion is more than the subregion in the comparing unit
During target brightness value, driving voltage corresponding with the subregion is turned down.
Wherein, the 3rd acquiring unit includes the first determining module, the second determining module, the 3rd determining module, the 4th
Determining module and the 5th determining module；
First determining module, in default ideal gamma curve, determining and some preset gray scales
It is worth one-to-one target brightness value；
Second determining module, in the current gamma curve that is fitted in the curve matching unit, determine with
One-to-one some first grey decision-makings of target brightness value that first determining module determines；
3rd determining module, for the corresponding relation according to preset gray scale value and target brightness value, and the first ash
Rank is worth the corresponding relation with target brightness value, determines the corresponding relation of preset gray scale value and the first grey decision-making；
4th determining module, for the corresponding relation according to the default driving voltage and GTG, determine with
The one-to-one driving voltage of the first grey decision-making that second determining module determines；
5th determining module, for preset gray scale value and the described first ash determined according to the 3rd determining module
The corresponding relation of rank value, and the corresponding relation of the driving voltage of the 4th determining module determination and the first grey decision-making, are obtained
With the driving voltage after some preset gray scale values correspondingly adjustment.
Wherein, the second acquisition unit includes the first acquisition module, the second acquisition module and analysis module；
First acquisition module, for obtaining the brightness value of a certain subregion of the display module；
Second acquisition module, the brightness for obtaining the display module difference subregion change；
The analysis module, for the bright of a certain subregion of the display module that is obtained according to first acquisition module
The brightness change for the different subregions that angle value and second acquisition module obtain, analysis obtain each height of the display module
The brightness value in region.
Wherein, the display module is Organic Light Emitting Diode module or liquid crystal display die set.
Wherein, the quantity of the preset gray scale value is 9~12.
Wherein, first acquisition module includes point type luminance meter, and second acquisition module includes charge coupled cell
Equipment.
As shown from the above technical solution, gamma electric voltage adjusting method of the present invention focuses on, and first obtains rough gal
Horse voltage, then the rough gamma electric voltage according to brightness measurement result adjust automatically, finally obtains more accurate gamma electricity
Pressure.
The completion that gamma electric voltage adjusting method of the present invention can be automated quick and precisely is per a piece of OLED display screen
Or the gamma voltage-regulation processes of LCD display, the gamma voltage-regulations of product in volume production are coped with, are a kind of suitable amounts
The gamma voltage Automatic adjustment methods of production.
Brief description of the drawings
, below will be to embodiment or existing skill in order to illustrate more clearly of the present embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in art description, it should be apparent that, drawings in the following description are the one of the present invention
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the flow chart for the gamma electric voltage adjusting method that the present embodiment one provides；
Fig. 2 is the structural representation for the gamma electric voltage adjusting means that the present embodiment two provides；
Fig. 3 is the structural representation for the gamma electric voltage adjusting means that the present embodiment three provides；
Fig. 4 is the structural representation for the gamma electric voltage adjusting means that the present embodiment four provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
Fig. 1 shows the flow chart for the gamma electric voltage adjusting method that the present embodiment one provides, in Fig. 1, the present embodiment one
The gamma electric voltage adjusting method of offer comprises the following steps：
Step 101：According to default driving voltage and the corresponding relation of GTG, one group and some preset gray scale values one are obtained
Driving voltage corresponding to one.
In this step, according to default driving voltage and the corresponding relation of GTG, one group and some preset gray scales are obtained
It is worth one-to-one driving voltage.Such as the linear corresponding relation according to driving voltage and GTG, obtain one group and preset with some
The one-to-one Linear Driving voltage of grey decision-making.Usually, the quantity of the preset gray scale value is 9~12.
Step 102：Display module is driven with this group of driving voltage, wherein, each voltage in this group of driving voltage is used for
Drive subregion corresponding to the display module.
In this step, obtained with step 101 with the one-to-one one group of Linear Driving voltage of some preset gray scale values
Display module is driven, specifically, each voltage in this group of Linear Driving voltage is used to drive subregion corresponding to display module,
That is, display module is per sub-regions, a corresponding driving voltage, i.e., every sub-regions correspond to a grey decision-making.It is wherein aobvious
Show that the quantity of the subregion of module is identical with the quantity of preset gray scale value.Wherein, the display module is Organic Light Emitting Diode
OLED (Organic Light-Emitting Diode) modules or liquid crystal display LCD (Liquid Crystal Display) mould
Group.
Step 103：Obtain the brightness value of each sub-regions of the display module.
This step obtains the brightness value of each sub-regions of display module, including following sub-step A1-A3：
A1. the brightness value of a certain subregion of display module is obtained using point type luminance meter；
A2. it is different the display module to be obtained using charge coupled cell CCD (Charge Coupled Device) equipment
The brightness change of subregion；
A3. changed according to the brightness of the brightness value of a certain subregion of the display module and different subregions, obtain institute
State the brightness value of each sub-regions of display module.
Step 104：According to the corresponding relation of this group of driving voltage and preset gray scale value, each electricity in this group of driving voltage
The corresponding relation of pressure and each sub-regions of the display module, and the brightness value of each sub-regions of the display module, fitting
Current gamma curve.
Step 105：According to default ideal gamma curve and the gamma curve being currently fitted, obtain one group with it is described some
Driving voltage after the adjustment correspondingly of preset gray scale value.
This step obtains and some default ashes according to default ideal gamma curve and the gamma curve being currently fitted
Driving voltage after the one-to-one adjustment of rank value, including following sub-step B1-B5：
B1. found in default ideal gamma curve and some one-to-one object brightnesses of preset gray scale value
Value.
B2. in the gamma curve being currently fitted, find and the target brightness value one-to-one some first
Grey decision-making.
B3. according to preset gray scale value and the corresponding relation of target brightness value, and the first grey decision-making and target brightness value
Corresponding relation, determine the corresponding relation of preset gray scale value and the first grey decision-making.
B4. according to the default driving voltage and the corresponding relation of GTG, obtain and a pair of first grey decision-making 1
The driving voltage answered.
B5. according to the preset gray scale value and the corresponding relation of first grey decision-making, and driving voltage and the first ash
The corresponding relation of rank value, obtain and the driving voltage after some preset gray scale values correspondingly adjustment.
Step 106：Driven and shown with the driving voltage after some preset gray scale values correspondingly adjustment with one group
Subregion corresponding to module, the present intensity value per sub-regions is obtained, judge present intensity value and the son per sub-regions
The relation of the target brightness value in region, if the present intensity value of certain sub-regions is less than the target brightness value of the subregion, adjust
High driving voltage corresponding with the subregion, otherwise turns down driving voltage corresponding with the subregion.
Wherein, the driving voltage after the adjustment that above-mentioned steps 105 obtain can be understood as the rough gamma electric voltage after adjustment,
Subregion corresponding to rough gamma electric voltage driving display module after the group is adjusted, is then obtained each using point type luminance meter
The present intensity value of subregion, by the present intensity value of every sub-regions compared with the target brightness value of the subregion, root
It is corresponding with the subregion according to the present intensity value of every sub-regions and the magnitude relationship regulation of the target brightness value of the subregion
Driving voltage.Such as when the present intensity value of certain sub-regions is less than the target brightness value of the subregion, heighten and the sub-district
Driving voltage corresponding to domain, driving voltage corresponding with the subregion is otherwise turned down, so as to obtain more accurate gamma electric voltage.
Understand from the description above, the gamma electric voltage adjusting method described in the present embodiment focuses on, and first obtains rough gal
Horse voltage, brightness measurement then is carried out to every sub-regions using point type luminance meter, according to brightness measurement result adjust automatically pair
Gamma electric voltages of the Ying Yu per sub-regions, finally obtains more accurate gamma electric voltage.
The completion that gamma electric voltage adjusting method described in the present embodiment can be automated quick and precisely is shown per a piece of OLED
The gamma voltage-regulation processes of screen or LCD display, the gamma voltage-regulations of product in volume production are coped with, be a kind of be adapted to
The gamma voltage Automatic adjustment methods of volume production.
Embodiment two
Fig. 2 shows the structural representation for the gamma electric voltage adjusting means that the embodiment of the present invention two provides, referring to Fig. 2, sheet
The gamma electric voltage adjusting means that inventive embodiments two provide, including：
First acquisition unit 21, for the corresponding relation according to default driving voltage and GTG, obtain one group with it is some
The one-to-one driving voltage of preset gray scale value.
Wherein, the quantity of the preset gray scale value is 9~12.
Driver element 22, one group of driving voltage for being obtained using the first acquisition unit drive display module, its
In, each voltage in this group of driving voltage is used to drive subregion corresponding to the display module.
Wherein, the display module is OLED modules or LCD modules.
Second acquisition unit 23, for the one group of drive obtained in the driver element 22 using the first acquisition unit 21
After dynamic voltage driving display module, the brightness value of each sub-regions of the display module is obtained.
Curve matching unit 24, for the one group of driving voltage and preset gray scale obtained according to the first acquisition unit 21
The corresponding relation of value, each voltage and each height of the display module in one group of driving voltage that the driver element 22 obtains
The corresponding relation in region, and the brightness value of each sub-regions of the display module of the acquisition of the second acquisition unit 23, intend
Gamma curve before being fated.
3rd acquiring unit 25, it is current for being fitted according to default ideal gamma curve and the curve matching unit
Gamma curve, obtain one group and driving voltage after some preset gray scale values correspondingly adjustment.
The driver element 22, it is additionally operable to one group and some default ashes obtained according to the 3rd acquiring unit 25
Driving voltage driving display module after the one-to-one adjustment of rank value, wherein, each voltage in this group of driving voltage is used to drive
Move subregion corresponding to the display module.
4th acquiring unit 26, for one group and the institute obtained in the driver element 22 according to the 3rd acquiring unit
State some preset gray scale values correspondingly adjustment after driving voltage driving display module after, it is each to obtain the display module
The brightness value of subregion.
Comparing unit 27, the brightness value of each sub-regions of display module obtained for the 4th acquiring unit 26
With the size of the target brightness value of each sub-regions.
Adjustment unit 28, for determining that the brightness value of a certain subregion is less than the mesh of the subregion in the comparing unit 27
When marking brightness value, driving voltage corresponding with the subregion is heightened.
The adjustment unit 28, it is additionally operable to determine that the brightness value of a certain subregion is more than the sub-district in the comparing unit 27
During the target brightness value in domain, driving voltage corresponding with the subregion is turned down.
The gamma electric voltage adjusting means that the present embodiment provides, it can be used for performing the gamma electric voltage described in above-described embodiment and adjust
Section method, its principle is similar with effect, is no longer described in detail herein.Gamma electric voltage adjusting means described in the present embodiment, can be effective
The degree of accuracy and the speed of gamma electric voltage regulation are improved, the gamma electric voltage regulation of product suitable for volume production.
Embodiment three
On the basis of above-described embodiment two, the embodiment of the present invention three also provides a kind of gamma electric voltage adjusting means,
In the present embodiment, the first determining module 251, the second determining module are further comprised referring to Fig. 3, the 3rd acquiring unit 25
252nd, the 3rd determining module 253, the 4th determining module 254 and the 5th determining module 255.
First determining module 251, in default ideal gamma curve, determining and some default ashes
Rank is worth one-to-one target brightness value.
Second determining module 252, in the current gamma curve that is fitted in the curve matching unit, determining
One-to-one some first grey decision-makings of target brightness value determined with first determining module.
3rd determining module 253, for the preset gray scale value and object brightness determined according to the first determining module 251
The corresponding relation of value, and the corresponding relation of the first grey decision-making of the second determining module 252 determination and target brightness value, it is determined that in advance
If the corresponding relation of grey decision-making and the first grey decision-making.
4th determining module 254, for the corresponding relation according to the default driving voltage and GTG, determine
The one-to-one driving voltage of the first grey decision-making determined with second determining module.
5th determining module 255, for the preset gray scale value that is determined according to the 3rd determining module and described the
The corresponding relation of one grey decision-making, and the corresponding relation of the driving voltage of the 4th determining module determination and the first grey decision-making,
Obtain and the driving voltage after some preset gray scale values correspondingly adjustment.
In the present embodiment, if the 3rd acquiring unit 25 is determined to intervene with described by the first determining module 251 first
If the one-to-one target brightness value of grey decision-making；Then determined and first determining module by the second determining module 252
One-to-one some first grey decision-makings of 251 target brightness values determined, default ash is determined further according to the 3rd determining module 253
Rank is worth and the corresponding relation of the first grey decision-making.Determined and second determining module 252 using the 4th determining module 254 afterwards
The one-to-one driving voltage of the first grey decision-making determined, last 5th determining module 255 is according to the 3rd determining module 253
The preset gray scale value of determination and the corresponding relation of first grey decision-making, and the driving that the 4th determining module 254 determines
The corresponding relation of voltage and the first grey decision-making, obtain and the driving electricity after some preset gray scale values correspondingly adjustment
Pressure, so as to the rough gamma electric voltage after being adjusted.
After the rough gamma electric voltage after the 3rd acquiring unit 25 is adjusted, the driver element 22, according to the 3rd
Rough gamma electric voltage driving voltage after acquiring unit 25 is adjusted drives display module；In the display module by the tune
After rough gamma electric voltage driving after whole is lighted, the 4th acquiring unit 26 starts to obtain the bright of each sub-regions of the display module
Angle value.Afterwards, comparing unit 27, the brightness for each sub-regions of display module that the 4th acquiring unit 26 described in comparison obtains is started
Value and the size of the target brightness value of each sub-regions.After comparing unit 27 compares end, it is single that comparative result is sent to regulation
Member 28, the comparative result that adjustment unit 28 is sent according to comparing unit 27, regulation driving voltage corresponding with per sub-regions, from
And finally give more accurate gamma electric voltage.
Example IV
On the basis of above-described embodiment two or embodiment three, the embodiment of the present invention four also provides a kind of gamma electric voltage
Adjusting means, in the present embodiment, referring to Fig. 4, the second acquisition unit 23 further comprises the first acquisition module 231,
Two acquisition modules 232 and analysis module 233；
First acquisition module 231, for obtaining the brightness value of a certain subregion of the display module；
Second acquisition module 232, the brightness for obtaining the display module difference subregion change；
The analysis module 233, for a certain sub-district of the display module obtained according to first acquisition module 231
The brightness change for the different subregions that the brightness value in domain and second acquisition module 232 obtain, analysis obtain the display
The brightness value of each sub-regions of module.
Preferably, first acquisition module 231 includes point type luminance meter, and second acquisition module 232 includes electric charge
Coupling element CCD equipment.
In the present embodiment, second acquisition unit 23 uses when obtaining the brightness of each sub-regions of display module
The mode that point type luminance meter and CCD equipment combine, specifically, point type luminance meter is utilized to obtain display module a certain subregion
Brightness value, the brightness that display module difference subregion is obtained using CCD equipment is changed, then according to a certain subregion of display module
Brightness value and display module difference subregion brightness change, analysis obtain the brightness of each sub-regions of the display module
Value.
Compared to independent by the way of point type luminance meter obtains the brightness value of each sub-regions of display module, this reality
Example is applied by the way of point type luminance meter and CCD equipment combine, the luminance acquisition time can be saved, reduce luminance acquisition process.
Above example is merely to illustrate technical scheme, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
- A kind of 1. gamma electric voltage adjusting method, it is characterised in that applied to Organic Light Emitting Diode OLED display modules, including：According to default driving voltage and the corresponding relation of GTG, obtain one group and driven correspondingly with some preset gray scale values Voltage；Display module is driven with this group of driving voltage, wherein, each voltage in this group of driving voltage is used to drive the display Subregion corresponding to module；Changed according to the brightness of the brightness value of a certain subregion and different subregions, obtain each sub-regions of the display module Brightness value；Including：The brightness value of a certain subregion of display module is obtained using point type luminance meter, using Charged Couple member Part equipment obtains the brightness change of the display module difference subregion, according to the brightness value of a certain subregion of the display module And the brightness of different subregions changes, the brightness value of each sub-regions of the display module is obtained；According to the corresponding relation of this group of driving voltage and preset gray scale value, each voltage and the display in this group of driving voltage The corresponding relation of each sub-regions of module, and the brightness value of each sub-regions of the display module, it is bent to be fitted current gamma Line；According to default ideal gamma curve and the gamma curve being currently fitted, one group and some preset gray scale values one are obtained Rough driving voltage after being adjusted corresponding to one；It is corresponding with the rough driving voltage driving display module after some preset gray scale values correspondingly adjustment with one group Subregion, using point type luminance meter obtain per sub-regions present intensity value, judge per sub-regions present intensity value With the relation of the target brightness value of the subregion, if the present intensity value of certain sub-regions be less than the subregion object brightness Value, then heighten driving voltage corresponding with the subregion, otherwise turn down driving voltage corresponding with the subregion, obtains accurate Gamma electric voltage.
- 2. according to the method for claim 1, it is characterised in that described according to default ideal gamma curve and current fitting Gamma curve, obtain with some preset gray scale values correspondingly adjustment after driving voltage, including：Found in default ideal gamma curve and some one-to-one target brightness values of preset gray scale value；In the gamma curve being currently fitted, find and one-to-one some first grey decision-makings of the target brightness value；According to preset gray scale value and the corresponding relation of target brightness value, and the first grey decision-making pass corresponding with target brightness value System, determine the corresponding relation of preset gray scale value and the first grey decision-making；According to the default driving voltage and the corresponding relation of GTG, obtain driving correspondingly with first grey decision-making Voltage；According to the preset gray scale value and the corresponding relation of first grey decision-making, and pair of driving voltage and the first grey decision-making It should be related to, obtain and the driving voltage after some preset gray scale values correspondingly adjustment.
- 3. according to the method for claim 1, it is characterised in that the display module is Organic Light Emitting Diode module or liquid Brilliant display module.
- 4. according to the method for claim 1, it is characterised in that the quantity of the preset gray scale value is 9~12.
- A kind of 5. gamma electric voltage adjusting means, it is characterised in that applied to Organic Light Emitting Diode OLED display modules, including：First acquisition unit, for the corresponding relation according to default driving voltage and GTG, obtain one group and some default ashes Rank is worth one-to-one driving voltage；Driver element, one group of driving voltage for being obtained using the first acquisition unit drive display module, wherein, the group Each voltage in driving voltage is used to drive subregion corresponding to the display module；Second acquisition unit, for the one group of driving voltage driving obtained in the driver element using the first acquisition unit After display module, changed according to the brightness of the brightness value of a certain subregion and different subregions, obtain the display module The brightness value of each sub-regions；The second acquisition unit includes the first acquisition module, the second acquisition module and analysis module, its In, the first acquisition module is used for the brightness value for obtaining a certain subregion of the display module, and the second acquisition module is used to obtain institute The brightness change of display module difference subregion is stated, analysis module is used for the display obtained according to first acquisition module The brightness change for the different subregions that the brightness value of a certain subregion of module and second acquisition module obtain, analysis obtain The brightness value of each sub-regions of display module；First acquisition module includes point type luminance meter, and described second obtains mould Block includes charge coupled cell equipment；Curve matching unit, one group of driving voltage for being obtained according to the first acquisition unit are corresponding with preset gray scale value Relation, each voltage in one group of driving voltage that the driver element obtains are corresponding with each sub-regions of the display module Relation, and the brightness value of each sub-regions of the display module of second acquisition unit acquisition, are fitted current gamma Curve；3rd acquiring unit, it is bent for the current gamma according to default ideal gamma curve and curve matching unit fitting Line, obtain one group and the rough driving voltage after some preset gray scale values correspondingly adjustment；The driver element, be additionally operable to according to the 3rd acquiring unit obtain one group with some preset gray scale values one by one Rough driving voltage driving display module after corresponding adjustment, wherein, each voltage in this group of driving voltage is used to drive Subregion corresponding to the display module；4th acquiring unit, if one group for being obtained in the driver element according to the 3rd acquiring unit is intervened with described If after the rough driving voltage driving display module after grey decision-making adjustment correspondingly, using described in the acquisition of point type luminance meter The brightness value of each sub-regions of display module；Comparing unit, brightness value and each height of each sub-regions of display module obtained for the 4th acquiring unit The size of the target brightness value in region；Adjustment unit, for determining that the brightness value of a certain subregion is less than the target brightness value of the subregion in the comparing unit When, heighten driving voltage corresponding with the subregion；It is additionally operable to determine that the brightness value of a certain subregion is big in the comparing unit When the target brightness value of the subregion, driving voltage corresponding with the subregion is turned down, obtains accurate gamma electric voltage.
- 6. device according to claim 5, it is characterised in that the 3rd acquiring unit includes the first determining module, the Two determining modules, the 3rd determining module, the 4th determining module and the 5th determining module；First determining module, in default ideal gamma curve, determining and some preset gray scale values one Target brightness value corresponding to one；Second determining module, in the current gamma curve that is fitted in the curve matching unit, determine with it is described One-to-one some first grey decision-makings of target brightness value that first determining module determines；3rd determining module, for the corresponding relation according to preset gray scale value and target brightness value, and the first grey decision-making With the corresponding relation of target brightness value, the corresponding relation of preset gray scale value and the first grey decision-making is determined；4th determining module, for the corresponding relation according to the default driving voltage and GTG, determine with it is described The one-to-one driving voltage of the first grey decision-making that second determining module determines；5th determining module, for preset gray scale value and first grey decision-making determined according to the 3rd determining module Corresponding relation, and the corresponding relation of the driving voltage that determines of the 4th determining module and the first grey decision-making obtains and institute State the driving voltage after the adjustment correspondingly of some preset gray scale values.
- 7. device according to claim 5, it is characterised in that the display module is Organic Light Emitting Diode module or liquid Brilliant display module.
- 8. device according to claim 5, it is characterised in that the quantity of the preset gray scale value is 9~12.
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| CN105741775B (en) | 2016-05-05 | 2019-01-22 | 京东方科技集团股份有限公司 | Method and device for adjusting gamma curve |
| CN106531066B (en) * | 2016-11-28 | 2020-02-07 | 昆山国显光电有限公司 | Gamma correction method and device for display module |
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| CN109119023B (en) * | 2018-10-24 | 2021-01-26 | 京东方科技集团股份有限公司 | Gamma curve setting method and system |
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| CN113053310B (en) * | 2019-01-31 | 2022-04-01 | 昆山国显光电有限公司 | Gamma adjusting method and device for display panel and display equipment |
| CN109817179B (en) * | 2019-03-27 | 2021-02-02 | 上海天马微电子有限公司 | Liquid crystal display panel brightness adjusting method and system and 3D printing device |
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