CN105096896A - Gamma voltage regulation method and device - Google Patents
Gamma voltage regulation method and device Download PDFInfo
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- CN105096896A CN105096896A CN201510601710.4A CN201510601710A CN105096896A CN 105096896 A CN105096896 A CN 105096896A CN 201510601710 A CN201510601710 A CN 201510601710A CN 105096896 A CN105096896 A CN 105096896A
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Abstract
The invention provides a gamma voltage regulation method and device. The method comprises the steps that a set of driving voltage corresponding to multiple preset gray scale values is acquired; driving voltage drives a display module group; the brightness value of each subarea of the display module group is acquired; a current gamma curve is obtained through fitting according to the corresponding relationship between the set of driving voltage and the preset gray scale values and the brightness values of all the subareas of the display module group; a set of regulated driving voltage corresponding to the multiple preset gray scale values is acquired according to the preset ideal gamma curve and the current fitting gamma curve; and the regulated driving voltage drives the corresponding subareas of the display module group, the current brightness value of each subarea is acquired, and driving voltage corresponding to the subarea is regulated according to the relationship between the current brightness value of each subarea and the target brightness value of the subarea. According to the gamma voltage regulation method, regulation accuracy and speed can be effectively enhanced so that the gamma voltage regulation method is suitable for gamma voltage regulation of batch production products.
Description
Technical field
The present invention relates to display technique field, be specifically related to a kind of gamma electric voltage control method and device.
Background technology
Existing gamma voltage adjusting method, need to use nitometer while change voltage, real-time monitoring brightness is to find suitable gamma voltage, such control method is relatively simple, and precision comparison is high, do not need special equipment, but relatively consuming time, and need to cooperatively interact can complete more than more than a people, be not suitable for volume production.
Summary of the invention
For defect of the prior art, the invention provides a kind of gamma electric voltage control method and device, to solve the problem that existing gamma electric voltage control method is not suitable for volume production.
For solving the problems of the technologies described above, the invention provides following technical scheme:
First aspect, the invention provides a kind of gamma electric voltage control method, comprising:
According to the corresponding relation of driving voltage and the GTG preset, obtain one group and some preset gray scale values driving voltage one to one;
Drive display module with this group driving voltage, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
Obtain the brightness value of each sub regions of described display module;
According to the corresponding relation of this group driving voltage and preset gray scale value, the corresponding relation of each voltage in this group driving voltage and each sub regions of described display module, and the brightness value of each sub regions of described display module, the gamma curve that matching is current;
According to the ideal gamma curve preset and the gamma curve of current matching, obtain one group and adjust rear drive voltage one to one with described some preset gray scale values;
Drive with the driving voltage after a group adjusts one to one with described some preset gray scale values and show subregion corresponding to module, obtain the present intensity value of every sub regions, judge the relation of the present intensity value of every sub regions and the target brightness value of this subregion, if the present intensity value of certain sub regions is less than the target brightness value of this subregion, then heighten the driving voltage corresponding with this subregion, otherwise turn down the driving voltage corresponding with this subregion.
Wherein, the gamma curve of the ideal gamma curve that described basis is preset and current matching, obtains and adjusts rear drive voltage one to one with described some preset gray scale values, comprising:
Find and described some preset gray scale values target brightness value one to one in the ideal gamma curve preset;
In the gamma curve of described current matching, find and described target brightness value some first grey decision-making one to one;
According to the corresponding relation of preset gray scale value and target brightness value, and the corresponding relation of the first grey decision-making and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making;
According to the corresponding relation of described default driving voltage and GTG, obtain and described first grey decision-making driving voltage one to one;
According to the corresponding relation of described preset gray scale value and described first grey decision-making, and the corresponding relation of driving voltage and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
Wherein, the brightness value of each sub regions of described acquisition described display module, comprising:
Point type nitometer is adopted to obtain the brightness value of a certain subregion of described display module;
Charge coupled cell equipment is adopted to obtain the brightness change of the different subregion of described display module;
According to the brightness value of a certain subregion of described display module and the brightness change of different subregion, obtain the brightness value of each sub regions of described display module.
Wherein, described display module is Organic Light Emitting Diode module or liquid crystal display module.
Wherein, the quantity of described preset gray scale value is 9 ~ 12.
Second aspect, present invention also offers a kind of gamma electric voltage regulating device, comprising:
First acquiring unit, for the corresponding relation according to the driving voltage preset and GTG, obtains one group and some preset gray scale values driving voltage one to one;
Driver element, one group of driving voltage for utilizing described first acquiring unit to obtain drives display module, and wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
Second acquisition unit, one group of driving voltage for utilizing described first acquiring unit to obtain at described driver element obtains the brightness value of each sub regions of described display module after driving display module;
Curve unit, for one group of driving voltage obtaining according to described first acquiring unit and the corresponding relation of preset gray scale value, each voltage in one group of driving voltage that described driver element obtains and the corresponding relation of each sub regions of described display module, and the brightness value of each sub regions of described display module of described second acquisition unit acquisition, the gamma curve that matching is current;
3rd acquiring unit, for the current gamma curve according to the ideal gamma curve preset and the matching of described curve unit, obtains one group and adjusts rear drive voltage one to one with described some preset gray scale values;
Described driver element, one group also for obtaining according to described 3rd acquiring unit adjusts rear drive voltage driven one to one with described some preset gray scale values and shows module, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
4th acquiring unit, adjusts after rear drive voltage driven shows module one to one for a group of obtaining according to described 3rd acquiring unit at described driver element and described some preset gray scale values, obtains the brightness value of each sub regions of described display module;
Comparing unit, the brightness value of each sub regions of display module obtained for more described 4th acquiring unit and the size of the target brightness value of each sub regions;
Regulon, for when described comparing unit determines that the brightness value of a certain subregion is less than the target brightness value of this subregion, heightens the driving voltage corresponding with this subregion;
Described regulon, also for when described comparing unit determines that the brightness value of a certain subregion is greater than the target brightness value of this subregion, turns down the driving voltage corresponding with this subregion.
Wherein, described 3rd acquiring unit comprises the first determination module, the second determination module, the 3rd determination module, the 4th determination module and the 5th determination module;
Described first determination module, in the ideal gamma curve preset, determines and described some preset gray scale values target brightness value one to one;
Described second determination module, in the current gamma curve of described curve unit matching, determines target brightness value some first grey decision-making one to one determined with described first determination module;
Described 3rd determination module, for the corresponding relation according to preset gray scale value and target brightness value, and the corresponding relation of the first grey decision-making and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making;
Described 4th determination module, for the corresponding relation according to described default driving voltage and GTG, determines the first grey decision-making driving voltage one to one determined with described second determination module;
Described 5th determination module, for the corresponding relation of the preset gray scale value determined according to described 3rd determination module and described first grey decision-making, and the corresponding relation of the driving voltage determined of described 4th determination module and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
Wherein, described second acquisition unit comprises the first acquisition module, the second acquisition module and analysis module;
Described first acquisition module, for obtaining the brightness value of a certain subregion of described display module;
Described second acquisition module, for obtaining the brightness change of the different subregion of described display module;
Described analysis module, for the brightness change of the different subregions that brightness value and described second acquisition module of a certain subregion of described display module according to described first acquisition module acquisition obtain, analyze the brightness value obtaining each sub regions of described display module.
Wherein, described display module is Organic Light Emitting Diode module or liquid crystal display module.
Wherein, the quantity of described preset gray scale value is 9 ~ 12.
Wherein, described first acquisition module comprises point type nitometer, and described second acquisition module comprises charge coupled cell equipment.
As shown from the above technical solution, gamma electric voltage control method of the present invention focuses on, and first obtains rough gamma electric voltage, then automatically adjusts described rough gamma electric voltage according to brightness measurement result, finally obtains comparatively accurate gamma electric voltage.
Gamma electric voltage control method of the present invention can the gamma voltage-regulation process completing every a slice OLED display screen or LCD display of quick and precisely robotization, can tackle the gamma voltage-regulation of product in volume production, be a kind of gamma voltage Automatic adjustment method of applicable volume production.
Accompanying drawing explanation
In order to be illustrated more clearly in the present embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of the gamma electric voltage control method that the present embodiment one provides;
Fig. 2 is the structural representation of the gamma electric voltage regulating device that the present embodiment two provides;
Fig. 3 is the structural representation of the gamma electric voltage regulating device that the present embodiment three provides;
Fig. 4 is the structural representation of the gamma electric voltage regulating device that the present embodiment four provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
Fig. 1 shows the process flow diagram of the gamma electric voltage control method that the present embodiment one provides, and as in Fig. 1, the gamma electric voltage control method that the present embodiment one provides comprises the steps:
Step 101: according to the corresponding relation of driving voltage and the GTG preset, obtains one group and some preset gray scale values driving voltage one to one.
In this step, according to the corresponding relation of driving voltage and the GTG preset, obtain one group and some preset gray scale values driving voltage one to one.Such as according to the linear corresponding relation of driving voltage and GTG, obtain one group with some preset gray scale values Linear Driving voltage one to one.Usually, the quantity of described preset gray scale value is 9 ~ 12.
Step 102: drive display module with this group driving voltage, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding.
In this step, obtain by step 101 with some preset gray scale values one to one one group of Linear Driving voltage driven show module, particularly, each voltage in this group Linear Driving voltage is for driving the subregion that display module is corresponding, that is, the corresponding driving voltage of the every sub regions of display module, the i.e. corresponding grey decision-making of every sub regions.The quantity wherein showing the subregion of module is identical with the quantity of preset gray scale value.Wherein, described display module is Organic Light Emitting Diode OLED (OrganicLight-EmittingDiode) module or liquid crystal display LCD (LiquidCrystalDisplay) module.
Step 103: the brightness value obtaining each sub regions of described display module.
This step obtains the brightness value of each sub regions of described display module, comprises following sub-step A1-A3:
A1. point type nitometer is adopted to obtain the brightness value of a certain subregion of described display module;
A2. charge coupled cell CCD (ChargeCoupledDevice) equipment is adopted to obtain the brightness change of the different subregion of described display module;
A3. according to the brightness value of a certain subregion of described display module and the brightness change of different subregion, the brightness value of each sub regions of described display module is obtained.
Step 104: according to the corresponding relation of this group driving voltage and preset gray scale value, the corresponding relation of each voltage in this group driving voltage and each sub regions of described display module, and the brightness value of each sub regions of described display module, the gamma curve that matching is current.
Step 105: according to the ideal gamma curve preset and the gamma curve of current matching, obtains one group and adjusts rear drive voltage one to one with described some preset gray scale values.
The gamma curve of the ideal gamma curve that this step basis is preset and current matching, obtains and adjusts rear drive voltage one to one with described some preset gray scale values, comprise following sub-step B1-B5:
B1. find and described some preset gray scale values target brightness value one to one in the ideal gamma curve preset.
B2., in the gamma curve of described current matching, find and described target brightness value some first grey decision-making one to one.
B3. according to the corresponding relation of preset gray scale value and target brightness value, and the corresponding relation of the first grey decision-making and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making.
B4. according to the corresponding relation of described default driving voltage and GTG, obtain and described first grey decision-making driving voltage one to one.
B5. according to the corresponding relation of described preset gray scale value and described first grey decision-making, and the corresponding relation of driving voltage and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
Step 106: drive with the driving voltage after a group adjusts one to one with described some preset gray scale values and show subregion corresponding to module, obtain the present intensity value of every sub regions, judge the relation of the present intensity value of every sub regions and the target brightness value of this subregion, if the present intensity value of certain sub regions is less than the target brightness value of this subregion, then heighten the driving voltage corresponding with this subregion, otherwise turn down the driving voltage corresponding with this subregion.
Wherein, driving voltage after the adjustment that above-mentioned steps 105 obtains can be understood as the rough gamma electric voltage after adjustment, rough gamma electric voltage after this group being adjusted drives the subregion that display module is corresponding, then point type nitometer is adopted to obtain the present intensity value of every sub regions, the present intensity value of every sub regions and the target brightness value of this subregion are compared, regulates the driving voltage corresponding with this subregion according to the present intensity value of every sub regions with the magnitude relationship of the target brightness value of this subregion.Such as when the present intensity value of certain sub regions is less than the target brightness value of this subregion, heighten the driving voltage corresponding with this subregion, otherwise turn down the driving voltage corresponding with this subregion, thus obtain comparatively accurate gamma electric voltage.
From description above, gamma electric voltage control method described in the present embodiment focuses on, first obtain rough gamma electric voltage, then point type nitometer is utilized to carry out brightness measurement to every sub regions, automatically adjust the gamma electric voltage corresponding to every sub regions according to brightness measurement result, finally obtain comparatively accurate gamma electric voltage.
Gamma electric voltage control method described in the present embodiment can the gamma voltage-regulation process completing every a slice OLED display screen or LCD display of quick and precisely robotization, can tackle the gamma voltage-regulation of product in volume production, be a kind of gamma voltage Automatic adjustment method of applicable volume production.
Embodiment two
Fig. 2 shows the structural representation of the gamma electric voltage regulating device that the embodiment of the present invention two provides, and see Fig. 2, the gamma electric voltage regulating device that the embodiment of the present invention two provides, comprising:
First acquiring unit 21, for the corresponding relation according to the driving voltage preset and GTG, obtains one group and some preset gray scale values driving voltage one to one.
Wherein, the quantity of described preset gray scale value is 9 ~ 12.
Driver element 22, one group of driving voltage for utilizing described first acquiring unit to obtain drives display module, and wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding.
Wherein, described display module is OLED module or LCD module.
Second acquisition unit 23, one group of driving voltage for utilizing described first acquiring unit 21 to obtain at described driver element 22 obtains the brightness value of each sub regions of described display module after driving display module.
Curve unit 24, for one group of driving voltage obtaining according to described first acquiring unit 21 and the corresponding relation of preset gray scale value, each voltage in one group of driving voltage that described driver element 22 obtains and the corresponding relation of each sub regions of described display module, and the brightness value of each sub regions of described display module of described second acquisition unit 23 acquisition, the gamma curve that matching is current.
3rd acquiring unit 25, for the current gamma curve according to the ideal gamma curve preset and the matching of described curve unit, obtains one group and adjusts rear drive voltage one to one with described some preset gray scale values.
Described driver element 22, one group also for obtaining according to described 3rd acquiring unit 25 adjusts rear drive voltage driven one to one with described some preset gray scale values and shows module, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding.
4th acquiring unit 26, adjust after rear drive voltage driven shows module one to one for a group of obtaining according to described 3rd acquiring unit at described driver element 22 and described some preset gray scale values, obtain the brightness value of each sub regions of described display module.
Comparing unit 27, the brightness value of each sub regions of display module obtained for more described 4th acquiring unit 26 and the size of the target brightness value of each sub regions.
Regulon 28, for when described comparing unit 27 determines that the brightness value of a certain subregion is less than the target brightness value of this subregion, heightens the driving voltage corresponding with this subregion.
Described regulon 28, also for when described comparing unit 27 determines that the brightness value of a certain subregion is greater than the target brightness value of this subregion, turns down the driving voltage corresponding with this subregion.
The gamma electric voltage regulating device that the present embodiment provides, may be used for performing gamma electric voltage control method described in above-described embodiment, its principle and effect similar, no longer describe in detail herein.Gamma electric voltage regulating device described in the present embodiment, effectively can improve accuracy and the speed of gamma electric voltage adjustment, the gamma electric voltage being applicable to product in volume production regulates.
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 regulating device, in the present embodiment, see Fig. 3, described 3rd acquiring unit 25 comprises the first determination module 251, second determination module 252, the 3rd determination module 253, the 4th determination module 254 and the 5th determination module 255 further.
Described first determination module 251, in the ideal gamma curve preset, determines and described some preset gray scale values target brightness value one to one.
Described second determination module 252, in the current gamma curve of described curve unit matching, determines target brightness value some first grey decision-making one to one determined with described first determination module.
Described 3rd determination module 253, for the corresponding relation of the preset gray scale value determined according to the first determination module 251 and target brightness value, and second corresponding relation of the first grey decision-making of determining of determination module 252 and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making.
Described 4th determination module 254, for the corresponding relation according to described default driving voltage and GTG, determines the first grey decision-making driving voltage one to one determined with described second determination module.
Described 5th determination module 255, for the corresponding relation of the preset gray scale value determined according to described 3rd determination module and described first grey decision-making, and the corresponding relation of the driving voltage determined of described 4th determination module and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
In the present embodiment, first the 3rd acquiring unit 25 is determined and described some preset gray scale values target brightness value one to one by the first determination module 251; Then determined target brightness value some first grey decision-making one to one determined with described first determination module 251 by the second determination module 252, then determine the corresponding relation of preset gray scale value and the first grey decision-making according to the 3rd determination module 253.The 4th determination module 254 is utilized to determine and the first grey decision-making driving voltage one to one that described second determination module 252 is determined afterwards, the corresponding relation of the preset gray scale value that last 5th determination module 255 is determined according to described 3rd determination module 253 and described first grey decision-making, and the corresponding relation of the driving voltage determined of described 4th determination module 254 and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values, thus the rough gamma electric voltage after being adjusted.
After rough gamma electric voltage after the 3rd acquiring unit 25 is adjusted, described driver element 22, the rough gamma electric voltage driving voltage after being adjusted according to the 3rd acquiring unit 25 drives display module; After described display module is lighted by the rough gamma electric voltage driving after described adjustment, the 4th acquiring unit 26 starts the brightness value obtaining each sub regions of described display module.Afterwards, comparing unit 27, starts the more described brightness value of each sub regions of display module of the 4th acquiring unit 26 acquisition and the size of the target brightness value of each sub regions.After comparing unit 27 compares end, comparative result is sent to regulon 28, the comparative result that regulon 28 sends according to comparing unit 27, regulate the driving voltage corresponding with every sub regions, thus finally obtain comparatively accurate gamma electric voltage.
Embodiment four
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 regulating device, in the present embodiment, see Fig. 4, described second acquisition unit 23 comprises the first acquisition module 231, second acquisition module 232 and analysis module 233 further;
Described first acquisition module 231, for obtaining the brightness value of a certain subregion of described display module;
Described second acquisition module 232, for obtaining the brightness change of the different subregion of described display module;
Described analysis module 233, for the brightness change of the different subregions that brightness value and described second acquisition module 232 of a certain subregion of described display module according to described first acquisition module 231 acquisition obtain, analyze the brightness value obtaining each sub regions of described display module.
Preferably, described first acquisition module 231 comprises point type nitometer, and described second acquisition module 232 comprises charge coupled cell CCD equipment.
In the present embodiment, second acquisition unit 23 is when obtaining the brightness of each sub regions of described display module, have employed the mode of point type nitometer and the combination of CCD equipment, particularly, point type nitometer is utilized to obtain the brightness value of a certain subregion of display module, CCD equipment is utilized to obtain the brightness change of the different subregion of display module, then according to the brightness value of a certain subregion of display module and the brightness change of the different subregion of display module, the brightness value obtaining each sub regions of described display module is analyzed.
Compared to adopting separately point type nitometer to obtain the mode of the brightness value of each sub regions of described display module, the mode that the present embodiment adopts point type nitometer and CCD equipment to combine, can save the luminance acquisition time, reduce luminance acquisition operation.
Above embodiment only for illustration of technical scheme of the present invention, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a gamma electric voltage control method, is characterized in that, comprising:
According to the corresponding relation of driving voltage and the GTG preset, obtain one group and some preset gray scale values driving voltage one to one;
Drive display module with this group driving voltage, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
Obtain the brightness value of each sub regions of described display module;
According to the corresponding relation of this group driving voltage and preset gray scale value, the corresponding relation of each voltage in this group driving voltage and each sub regions of described display module, and the brightness value of each sub regions of described display module, the gamma curve that matching is current;
According to the ideal gamma curve preset and the gamma curve of current matching, obtain one group and adjust rear drive voltage one to one with described some preset gray scale values;
Drive with the driving voltage after a group adjusts one to one with described some preset gray scale values and show subregion corresponding to module, obtain the present intensity value of every sub regions, judge the relation of the present intensity value of every sub regions and the target brightness value of this subregion, if the present intensity value of certain sub regions is less than the target brightness value of this subregion, then heighten the driving voltage corresponding with this subregion, otherwise turn down the driving voltage corresponding with this subregion.
2. method according to claim 1, is characterized in that, the gamma curve of the ideal gamma curve that described basis is preset and current matching, obtains and adjusts rear drive voltage one to one with described some preset gray scale values, comprising:
Find and described some preset gray scale values target brightness value one to one in the ideal gamma curve preset;
In the gamma curve of described current matching, find and described target brightness value some first grey decision-making one to one;
According to the corresponding relation of preset gray scale value and target brightness value, and the corresponding relation of the first grey decision-making and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making;
According to the corresponding relation of described default driving voltage and GTG, obtain and described first grey decision-making driving voltage one to one;
According to the corresponding relation of described preset gray scale value and described first grey decision-making, and the corresponding relation of driving voltage and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
3. method according to claim 1, is characterized in that, the brightness value of each sub regions of described acquisition described display module, comprising:
Point type nitometer is adopted to obtain the brightness value of a certain subregion of described display module;
Charge coupled cell equipment is adopted to obtain the brightness change of the different subregion of described display module;
According to the brightness value of a certain subregion of described display module and the brightness change of different subregion, obtain the brightness value of each sub regions of described display module.
4. method according to claim 1, is characterized in that, described display module is Organic Light Emitting Diode module or liquid crystal display module.
5. method according to claim 1, is characterized in that, the quantity of described preset gray scale value is 9 ~ 12.
6. a gamma electric voltage regulating device, is characterized in that, comprising:
First acquiring unit, for the corresponding relation according to the driving voltage preset and GTG, obtains one group and some preset gray scale values driving voltage one to one;
Driver element, one group of driving voltage for utilizing described first acquiring unit to obtain drives display module, and wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
Second acquisition unit, one group of driving voltage for utilizing described first acquiring unit to obtain at described driver element obtains the brightness value of each sub regions of described display module after driving display module;
Curve unit, for one group of driving voltage obtaining according to described first acquiring unit and the corresponding relation of preset gray scale value, each voltage in one group of driving voltage that described driver element obtains and the corresponding relation of each sub regions of described display module, and the brightness value of each sub regions of described display module of described second acquisition unit acquisition, the gamma curve that matching is current;
3rd acquiring unit, for the current gamma curve according to the ideal gamma curve preset and the matching of described curve unit, obtains one group and adjusts rear drive voltage one to one with described some preset gray scale values;
Described driver element, one group also for obtaining according to described 3rd acquiring unit adjusts rear drive voltage driven one to one with described some preset gray scale values and shows module, wherein, each voltage in this group driving voltage is for driving the subregion that described display module is corresponding;
4th acquiring unit, adjusts after rear drive voltage driven shows module one to one for a group of obtaining according to described 3rd acquiring unit at described driver element and described some preset gray scale values, obtains the brightness value of each sub regions of described display module;
Comparing unit, the brightness value of each sub regions of display module obtained for more described 4th acquiring unit and the size of the target brightness value of each sub regions;
Regulon, for when described comparing unit determines that the brightness value of a certain subregion is less than the target brightness value of this subregion, heightens the driving voltage corresponding with this subregion;
Described regulon, also for when described comparing unit determines that the brightness value of a certain subregion is greater than the target brightness value of this subregion, turns down the driving voltage corresponding with this subregion.
7. device according to claim 6, is characterized in that, described 3rd acquiring unit comprises the first determination module, the second determination module, the 3rd determination module, the 4th determination module and the 5th determination module;
Described first determination module, in the ideal gamma curve preset, determines and described some preset gray scale values target brightness value one to one;
Described second determination module, in the current gamma curve of described curve unit matching, determines target brightness value some first grey decision-making one to one determined with described first determination module;
Described 3rd determination module, for the corresponding relation according to preset gray scale value and target brightness value, and the corresponding relation of the first grey decision-making and target brightness value, determine the corresponding relation of preset gray scale value and the first grey decision-making;
Described 4th determination module, for the corresponding relation according to described default driving voltage and GTG, determines the first grey decision-making driving voltage one to one determined with described second determination module;
Described 5th determination module, for the corresponding relation of the preset gray scale value determined according to described 3rd determination module and described first grey decision-making, and the corresponding relation of the driving voltage determined of described 4th determination module and the first grey decision-making, obtain the driving voltage after adjusting one to one with described some preset gray scale values.
8. device according to claim 6, is characterized in that, described second acquisition unit comprises the first acquisition module, the second acquisition module and analysis module;
Described first acquisition module, for obtaining the brightness value of a certain subregion of described display module;
Described second acquisition module, for obtaining the brightness change of the different subregion of described display module;
Described analysis module, for the brightness change of the different subregions that brightness value and described second acquisition module of a certain subregion of described display module according to described first acquisition module acquisition obtain, analyze the brightness value obtaining each sub regions of described display module.
9. device according to claim 6, is characterized in that, described display module is Organic Light Emitting Diode module or liquid crystal display module.
10. device according to claim 6, is characterized in that, the quantity of described preset gray scale value is 9 ~ 12.
11. devices according to claim 8, is characterized in that, described first acquisition module comprises point type nitometer, and described second acquisition module comprises charge coupled cell equipment.
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105741775A (en) * | 2016-05-05 | 2016-07-06 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma curve |
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| CN105741775A (en) * | 2016-05-05 | 2016-07-06 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma curve |
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| CN109920372A (en) * | 2017-12-12 | 2019-06-21 | 京东方科技集团股份有限公司 | Driver module, display device and voltage adjusting method |
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| CN110675818A (en) * | 2019-12-03 | 2020-01-10 | 武汉精立电子技术有限公司 | Curve matching-based module Gamma correction method and system |
| CN111145682B (en) * | 2020-01-07 | 2022-07-12 | 长春希达电子技术有限公司 | Correction coefficient matrix fitting method under fixed constant current driving condition |
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| CN111128077A (en) * | 2020-01-15 | 2020-05-08 | 京东方科技集团股份有限公司 | Gamma debugging method and device, gamma debugging equipment and medium |
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