CN109461408A - Display brightness compensation method, device and system - Google Patents
Display brightness compensation method, device and system Download PDFInfo
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- CN109461408A CN109461408A CN201811637365.XA CN201811637365A CN109461408A CN 109461408 A CN109461408 A CN 109461408A CN 201811637365 A CN201811637365 A CN 201811637365A CN 109461408 A CN109461408 A CN 109461408A
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides display brightness compensation method, device and system.Display brightness compensation method is used to compensate the brightness of multiple object pixels in display panel, comprising: generates penalty coefficient, penalty coefficient is sampling grayscale for compensating brightness of one or more object pixel in the first grayscale, the first grayscale；Gain coefficient is set, gain coefficient and penalty coefficient are provided commonly for compensating brightness of one or more object pixel in multiple second grayscale, and the second grayscale is non-sampled grayscale；Gamma factor is set, gamma factor corresponds to average brightness of multiple object pixels in the first grayscale or in the second grayscale；According to gamma factor adjust gain coefficient, the gain coefficient being adjusted and penalty coefficient are provided commonly for compensating brightness of multiple object pixels in the first grayscale or in the second grayscale.In the present invention, after the brightness of multiple object pixels in compensation display panel, the brightness of multiple object pixels of display panel is substantially uniform.
Description
[technical field]
The present invention relates to organic light emitting display technical field more particularly to a kind of display brightness compensation methodes, a kind of display
Luminance compensating mechanism and a kind of display brightness compensation system.
[background technique]
Organic light emitting display panel realizes display using Organic Light Emitting Diode.But organic light emission is aobvious in the prior art
Show the brightness irregularities of multiple object pixels of panel.
[summary of the invention]
In order to solve the above technical problem, the present invention provides a kind of display brightness compensation method, a kind of display brightness to compensate
Device and a kind of display brightness compensation system.
On the one hand, the present invention provides a kind of display brightness compensation method, and the method is more in display panel for compensating
The brightness of a object pixel；
The described method includes:
Penalty coefficient is generated, the penalty coefficient is for compensating one or more described object pixel in the first grayscale
Brightness, first grayscale be sampling grayscale；
Gain coefficient is set, the gain coefficient and the penalty coefficient are provided commonly for compensating one or more mesh
Brightness of the pixel in multiple second grayscale is marked, second grayscale is non-sampled grayscale；
Set gamma factor, the gamma factor correspond to multiple object pixels in first grayscale or
Average brightness when second grayscale；
The gain coefficient is adjusted according to the gamma factor, the gain coefficient being adjusted and the penalty coefficient are total
With for compensating brightness of multiple object pixels in first grayscale or in second grayscale.
Optionally, the method also includes: before the setting gamma factor the step of, determine the gamma factor and more
The corresponding relationship of average brightness of a object pixel in first grayscale or in second grayscale.
Optionally, the method also includes: it is described according to the gamma factor adjust the gain coefficient the step of before,
Gain coefficient described in multiple groups is generated, gain coefficient described in every group includes multiple gain coefficients, in multiple gamma factors
Each of the gamma factor correspond to one group described in gain coefficient.
Optionally, described the step of adjusting the gain coefficient according to the gamma factor includes: to be for the gamma
Number selects corresponding gain coefficient described in one group.
Optionally, the described the step of gain coefficient is adjusted according to the gamma factor further include: in pair selected
In gain coefficient described in one group answered, a gain coefficient is selected, the gain coefficient selected and the compensation are
Number is provided commonly for compensating brightness of multiple object pixels in first grayscale or in second grayscale.
Optionally, before the setting gain coefficient the step of, generate one group described in gain coefficient, gain system described in one group
Number includes multiple gain coefficients, and the second grayscale of each of multiple described second grayscale corresponds to a gain coefficient.
Optionally, the step of setting gain coefficient includes: for the second ash of each of multiple described second grayscale
Rank, selects the corresponding gain coefficient, and the gain coefficient and the penalty coefficient are provided commonly for compensating multiple targets
Brightness of the pixel in multiple second grayscale.
Optionally, the second grayscale of each of multiple described second grayscale with described in one described in one group in gain coefficient
The corresponding relationship of gain coefficient is linear either discrete.
Optionally, multiple object pixels are divided into multiple object pixel subregions；
The method also includes: before the setting gain coefficient the step of, generate one group described in gain coefficient, one group of institute
Stating gain coefficient includes multiple gain coefficients, each of multiple described object pixel subregions object pixel sub-district
Domain corresponds to a gain coefficient.
Optionally, the step of setting gain coefficient includes: for each of multiple described object pixel subregions
The object pixel subregion, selects the corresponding gain coefficient, and the gain coefficient is provided commonly for the penalty coefficient
Compensate the brightness of multiple object pixel subregions.
On the other hand, the present invention provides a kind of display brightness compensation device, and described device is for compensating in display panel
The brightness of multiple object pixels；
Described device includes compensating module, gain coefficient setting module, gamma factor setting module；
The compensating module is for generating penalty coefficient, and the penalty coefficient is for compensating one or more target
Brightness of the pixel in the first grayscale, first grayscale are sampling grayscale；
The gain coefficient setting module for setting gain coefficient, use jointly with the penalty coefficient by the gain coefficient
In compensating brightness of one or more described object pixel in multiple second grayscale when, second grayscale is non-sampled ash
Rank；
The gamma factor setting module corresponds to multiple target pictures for setting gamma factor, the gamma factor
Average brightness of the element in first grayscale or in second grayscale；
The gain coefficient setting module is also used to adjust the gain coefficient, the institute being adjusted according to the gamma factor
It states gain coefficient and the penalty coefficient is provided commonly for compensating multiple object pixels in first grayscale or in institute
State brightness when the second grayscale.
Optionally, described device further includes brightness control module, memory module；
The brightness control module controls the gain coefficient setting module and sets the gain coefficient, according to the gamma
Gain coefficient described in coefficient adjustment, and control the gamma factor setting module and set the gamma factor；
The memory module stores the gain coefficient.
In another aspect, the present invention provides a kind of display brightness compensation system, the system comprises photographic devices, display surface
Plate, the display brightness compensation device；
The photographic device is connect with the display brightness compensation device, and the display panel and the display brightness compensate
Device connection；
For the display panel for showing test pictures, the photographic device is described aobvious for shooting the test pictures
Show that luminance compensating mechanism calculates offset data for the test pictures, the offset data includes penalty coefficient, gain coefficient.
In the present invention, firstly, when the average brightness of multiple object pixels of display panel is set as the first average brightness
When, it shows the test pictures of the first grayscale, generates penalty coefficient for the test pictures of the first grayscale, penalty coefficient is inputted aobvious
Show panel, so that brightness of multiple object pixels in the first grayscale is substantially uniform；Then, when multiple targets of display panel
When the average brightness of pixel is set as the first average brightness, the test pictures of the second grayscale, the second grayscale and the first grayscale are shown
Difference sets gain coefficient for the test pictures of the second grayscale, by gain coefficient and penalty coefficient input display panel, so that
Brightness of the multiple object pixels of display panel in the second grayscale is substantially uniform；Then, when multiple targets of display panel
When the average brightness of pixel is set as the second average brightness, the second average brightness is different from the first average brightness, the first ash of display
The test pictures of rank perhaps the second grayscale set gamma factor, gamma for the first grayscale or the test pictures of the second grayscale
Coefficient corresponds to second average brightness of multiple object pixels in the first grayscale or in the second grayscale；Then, work as display
When the average brightness of multiple object pixels of panel is set as the second average brightness, the survey of the first grayscale or the second grayscale is shown
Picture is tried, for the first grayscale or the test pictures of the second grayscale, according to gamma factor adjust gain coefficient, by what is be adjusted
Gain coefficient and penalty coefficient input display panel, so that multiple object pixels of display panel are in the first grayscale or the
Brightness when two grayscale is substantially uniform.Then, after the brightness of multiple object pixels in compensation display panel, in different ashes
When rank, the brightness of multiple object pixels of display panel is substantially uniform；Also, in the flat of multiple object pixels of display panel
When equal brightness difference, the brightness of multiple object pixels of display panel is substantially uniform.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the floor map of display panel 100 in the prior art；
Fig. 2 is a kind of flow diagram of display brightness compensation method 200 of the embodiment of the present invention；
Fig. 3 is the floor map of the display panel 300 compensated in the embodiment of the present invention；
Fig. 4 is the module diagram of display brightness compensation system 400 in the embodiment of the present invention；
Fig. 5 is the flow diagram that display brightness compensation system 400 executes compensation in the embodiment of the present invention；
Fig. 6 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Fig. 7 is the corresponding relationship of the average brightness of gamma factor and multiple object pixels 310 in the embodiment of the present invention；
Fig. 8 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Fig. 9 is the corresponding relationship of gamma factor and multiple groups gain coefficient in the embodiment of the present invention；
Figure 10 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Figure 11 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Figure 12 is the corresponding relationship of grayscale and gain coefficient in the embodiment of the present invention；
Figure 13 is another corresponding relationship of grayscale and gain coefficient in the embodiment of the present invention；
Figure 14 is another floor map of the display panel 300 compensated in the embodiment of the present invention；
Figure 15 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Figure 16 is a kind of module diagram of display brightness compensation device 500 of the embodiment of the present invention.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It will be appreciated that though device may be described in embodiments of the present invention using term first, second etc., but these
Device should not necessarily be limited by these terms.These terms are only used to for device being distinguished from each other out.For example, not departing from the embodiment of the present invention
In the case where range, first device can also be referred to as second device, and similarly, second device can also be referred to as the first dress
It sets.
Fig. 1 is the floor map of display panel 100 in the prior art.
As shown in Figure 1, in the prior art, the test pictures that display panel 100 is shown have irregular patch, display surface
The brightness irregularities of multiple object pixels of plate 100.Inventor has found after study, multiple targets of display panel 100
The average brightness of pixel is different, display panel 100 grayscale is different, can all lead to multiple object pixels of display panel 100
Brightness irregularities.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of display brightness compensation method and a kind of display
Luminance compensating mechanism.
Fig. 2 is a kind of flow diagram of display brightness compensation method 200 of the embodiment of the present invention；Fig. 3 is implementation of the present invention
The floor map of the display panel 300 compensated in example.
As shown in Figure 2,3, in embodiments of the present invention, display brightness compensation method 200 is for compensating in display panel 300
Multiple object pixels 310 brightness；
Display brightness compensation method 200 includes:
Step S210 generates penalty coefficient, and penalty coefficient is for compensating one or more object pixel 310 in the first ash
Brightness when rank, the first grayscale are sampling grayscale；
Step S220, sets gain coefficient, and gain coefficient and penalty coefficient are provided commonly for compensating one or more target
Brightness of the pixel 310 in multiple second grayscale, the second grayscale are non-sampled grayscale；
Step S230, set gamma factor, gamma factor correspond to multiple object pixels 310 in the first grayscale or
Average brightness when the second grayscale；
Step S240, according to gamma factor adjust gain coefficient, the gain coefficient being adjusted is provided commonly for penalty coefficient
Compensate brightness of multiple object pixels 310 in the first grayscale or in the second grayscale.
Wherein, display panel 300 is the organic light emitting display panel that display is realized using Organic Light Emitting Diode, but not
As limit.
Fig. 4 is the module diagram of display brightness compensation system 400 in the embodiment of the present invention；Fig. 5 is the embodiment of the present invention
Middle display brightness compensation system 400 executes the flow diagram of compensation.
As shown in Figure 4,5, in embodiments of the present invention, display brightness compensation system 400 includes photographic device 410, display
Panel 300, display brightness compensation device 500, display panel 300 are connect with display brightness compensation device 500, photographic device 410
It is connect with display brightness compensation device 500；When display brightness compensation system 400 is executed and is compensated, the display test of display panel 300
Picture, photographic device 410 shoot test pictures, and test pictures are transmitted to display brightness compensation device 500 by photographic device 410,
Display brightness compensation device 500 calculates offset data for test pictures, and display brightness compensation device 500 transmits offset data
To display panel 300, display panel 300 executes display according to offset data；Wherein, offset data includes penalty coefficient, gain
Coefficient.
In embodiments of the present invention, firstly, when the average brightness of multiple object pixels 310 of display panel 300 is set as
When the first average brightness, the test pictures of the first grayscale are shown, generate penalty coefficient for the test pictures of the first grayscale, will mend
Coefficient input display panel 300 is repaid, so that brightness of the multiple object pixels 310 in the first grayscale is substantially uniform；Then, when
When the average brightness of multiple object pixels 310 of display panel 300 is set as the first average brightness, the test of the second grayscale is shown
Picture, the second grayscale is different from the first grayscale, sets gain coefficient for the test pictures of the second grayscale, by gain coefficient and mends
Coefficient input display panel 300 is repaid, so that brightness of the multiple object pixels 310 of display panel 300 in the second grayscale is basic
It is upper uniform；Then, when the average brightness of multiple object pixels 310 of display panel 300 is set as the second average brightness, second
Average brightness is different from the first average brightness, shows the test pictures of the first grayscale or the second grayscale, for the first grayscale or
The test pictures of the second grayscale of person, set gamma factor, gamma factor correspond to multiple object pixels 310 in the first grayscale or
Second average brightness of the person in the second grayscale；Then, when the average brightness of multiple object pixels 310 of display panel 300 is set
When being set to the second average brightness, display the first grayscale perhaps the second grayscale test pictures for the first grayscale or second ash
The gain coefficient being adjusted and penalty coefficient are inputted display surface according to gamma factor adjust gain coefficient by the test pictures of rank
Plate 300, so that brightness of the multiple object pixels 310 of display panel 300 in the first grayscale or in the second grayscale is basic
It is upper uniform.Then, after the brightness of multiple object pixels 310 in compensation display panel 300, in different grayscale, display surface
The brightness of multiple object pixels 310 of plate 300 is substantially uniform；Also, in multiple object pixels 310 of display panel 300
When average brightness difference, the brightness of multiple object pixels 310 of display panel 300 is substantially uniform.
Fig. 6 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；Fig. 7 is of the invention real
Apply the corresponding relationship of the average brightness of gamma factor and multiple object pixels 310 in example.
As shown in Fig. 3,6,7, in embodiments of the present invention, display brightness compensation method 200 includes:
Step S225 determines gamma factor and multiple object pixels 310 in the first ash the step of setting gamma factor before
The corresponding relationship of average brightness when rank or in the second grayscale；
Step S230 sets gamma factor.
In embodiments of the present invention, gamma factor and multiple object pixels 310 are in the first grayscale or in the second grayscale
When average brightness corresponding relationship as shown in fig. 7, gamma factor and multiple object pixels 310 in the first grayscale or the
Average brightness when two grayscale corresponds, for example, the first gamma factor γ 1 is with multiple object pixels 310 in the first grayscale
Or the first average brightness B1 in the second grayscale is corresponding, the second gamma factor γ 2 is with multiple object pixels 310 in the first ash
The second average brightness B2 when rank or in the second grayscale is corresponding, and the first gamma factor γ 1 and the second gamma factor γ 2 are not
Together, the first average brightness B1 is different from the second average brightness B2.Then, according to gamma factor and multiple object pixels 310 the
The corresponding relationship of average brightness when one grayscale or in the second grayscale, in multiple object pixels 310 of display panel 300
When average brightness is set as the first average brightness B1, the first gamma factor γ 1 is set, in multiple target pictures of display panel 300
When the average brightness of element 310 is set as the first average brightness B2, the second gamma factor γ 2 is set.
Fig. 8 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；Fig. 9 is of the invention real
Apply the corresponding relationship of gamma factor and multiple groups gain coefficient in example.
As shown in Figure 8,9, in embodiments of the present invention, display brightness compensation method 200 includes:
Step S235 generates multiple groups gain coefficient, every group of gain before the step of according to gamma factor adjust gain coefficient
Coefficient includes multiple gain coefficients, and each gamma factor in multiple gamma factors corresponds to one group of gain coefficient；
Step S240, according to gamma factor adjust gain coefficient.
In embodiments of the present invention, gamma factor and multiple groups gain coefficient corresponding relationship as shown in figure 9, gamma factor with
Multiple groups gain coefficient corresponds, for example, the first gamma factor γ 1 is corresponding with first group of gain coefficient, the second gamma factor γ 2
Corresponding with second group of gain coefficient, gamma factor γ n is corresponding with n-th group gain coefficient, the first gamma factor γ 1 and the second gamma
Coefficient gamma 2 is different, and first group of gain coefficient is different from second group of gain coefficient.Then, gamma factor and multiple groups gain system are utilized
Several corresponding relationship, according to gamma factor adjust gain coefficient.
Figure 10 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200.
It as shown in Figure 10, in embodiments of the present invention, include: step according to the step of gamma factor adjust gain coefficient
S240-1 selects corresponding one group of gain coefficient for gamma factor.
In embodiments of the present invention, according to the corresponding relationship of gamma factor and multiple groups gain coefficient, the first gamma is being set
When coefficient gamma 1, first group of gain coefficient is selected, when setting the second gamma factor γ 2, selects second group of gain coefficient；Also that is,
According to different gamma factors, one group of gain coefficient appropriate is selected；Then, for multiple object pixels 310 in the first grayscale
When or the different average brightness in the second grayscale, display panel is compensated using one group of gain coefficient appropriate and penalty coefficient
The brightness of 300 multiple object pixels 310.
As shown in Figure 10, in embodiments of the present invention, according to gamma factor adjust gain coefficient the step of further include: step
S240-2 selects a gain coefficient, the gain coefficient selected and compensation in the corresponding one group of gain coefficient selected
Coefficient is provided commonly for compensating brightness of multiple object pixels 310 in the first grayscale or in the second grayscale.
In embodiments of the present invention, after selecting one group of gain coefficient appropriate according to different gamma factors, selected
In the corresponding one group of gain coefficient selected, a gain coefficient is selected；Then, grey first for multiple object pixels 310
Different average brightness when rank perhaps in the second grayscale compensate after for the first grayscale or the second grayscale etc. difference
Grayscale, using the brightness of a gain coefficient appropriate and multiple object pixels 310 of penalty coefficient compensation display panel 300.
Figure 11 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200；
Figure 12 is the corresponding relationship of grayscale and gain coefficient in the embodiment of the present invention；
Figure 13 is another corresponding relationship of grayscale and gain coefficient in the embodiment of the present invention.
As shown in Figure 11 to 13, in embodiments of the present invention, display brightness compensation method 200 includes:
Step S215-1 generates one group of gain coefficient the step of setting gain coefficient before, and one group of gain coefficient includes more
A gain coefficient, the second grayscale of each of multiple second grayscale correspond to a gain coefficient；
Step S220 sets gain coefficient.
In embodiments of the present invention, the corresponding relationship of grayscale and gain coefficient is as shown in Figure 12,13, grayscale and gain coefficient
It corresponds, for example, the first grayscale is 32 grayscale, the second grayscale is other grayscale in 0 to 255 grayscale other than 32 grayscale, 0 ash
Rank is corresponding with the first gain coefficient, and 64 grayscale are corresponding with the second gain coefficient.Then, it is closed using grayscale is corresponding with gain coefficient
System sets gain coefficient.
In embodiments of the present invention, the step of setting gain coefficient includes: for each of multiple second grayscale second
Grayscale, selects corresponding gain coefficient, and gain coefficient and penalty coefficient are provided commonly for compensating multiple object pixels 310 multiple the
Brightness when two grayscale.
In embodiments of the present invention, according to the corresponding relationship of grayscale and gain coefficient, in 0 grayscale, the first gain is selected
Coefficient selects the second gain coefficient in 64 grayscale；Also that is, according to the second different grayscale, a gain system appropriate is selected
Number；Then, for different grayscale, using multiple mesh of a gain coefficient appropriate and penalty coefficient compensation display panel 300
Mark the brightness of pixel 310.
As shown in Figure 12 to 13, in embodiments of the present invention, the second grayscale of each of multiple second grayscale and one group of increasing
The corresponding relationship of a gain coefficient in beneficial coefficient is linear either discrete.Grayscale is corresponding with gain coefficient to close
System can be it is linear, can be it is discrete, can according to compensation the case where be set as linear or discrete.
Figure 14 is another floor map of the display panel 300 compensated in the embodiment of the present invention；
Figure 15 is the flow diagram of another kind display brightness of embodiment of the present invention compensation method 200.
As shown in Fig. 3,14, in embodiments of the present invention, multiple object pixels 310 are divided into multiple object pixel sub-districts
Domain.
As shown in figure 15, in embodiments of the present invention, display brightness compensation method 200 includes:
Step S215-2 generates one group of gain coefficient the step of setting gain coefficient before, and one group of gain coefficient includes more
A gain coefficient, each object pixel subregion in multiple object pixel subregions correspond to a gain coefficient；
Step S220 sets gain coefficient.
In embodiments of the present invention, multiple object pixels 310 are divided into multiple object pixel subregions, such as first object
Pixel subregion 310A, the second object pixel subregion 310B, third object pixel subregion 310C, the 4th object pixel sub-district
Domain 310D etc..Multiple object pixel subregions and multiple gain coefficients correspond, for example, first object pixel subregion 310A
Corresponding with the first gain coefficient, the second object pixel subregion 310B is corresponding with the second gain coefficient, third object pixel sub-district
Domain 310C is corresponding with third gain coefficient, and the 4th object pixel subregion 310D is corresponding with the 4th gain coefficient.Then, according to more
The corresponding relationship of a object pixel subregion and multiple gain coefficients sets gain coefficient.
In embodiments of the present invention, the step of setting gain coefficient includes: for every in multiple object pixel subregions
A object pixel subregion, selects corresponding gain coefficient, and gain coefficient and penalty coefficient are provided commonly for compensating multiple target pictures
The brightness in sub-prime region.
In embodiments of the present invention, according to the corresponding relationship of multiple object pixel subregions and multiple gain coefficients, respectively
For each object pixel subregion in multiple object pixel subregions, corresponding gain coefficient is selected respectively；Then, respectively
For each object pixel subregion, the gain coefficient and penalty coefficient that selection is respectively adopted compensate each object pixel subregion
Brightness so that the brightness of each object pixel subregion is more uniform.
Figure 16 is a kind of module diagram of display brightness compensation device 500 of the embodiment of the present invention.
As shown in Fig. 3,16, in embodiments of the present invention, display brightness compensation device 500 is for compensating display panel 300
In multiple object pixels 310 brightness；
Display brightness compensation device 500 includes compensating module 510, gain coefficient setting module 520, gamma factor setting mould
Block 530；
Compensating module 510 exists for generating penalty coefficient, penalty coefficient for compensating one or more object pixel 310
Brightness when the first grayscale, the first grayscale are sampling grayscale；
Gain coefficient setting module 520 is provided commonly for compensation one for setting gain coefficient, gain coefficient and penalty coefficient
Brightness of a or multiple object pixels 310 in multiple second grayscale, the second grayscale are non-sampled grayscale；
For gamma factor setting module 530 for setting gamma factor, gamma factor corresponds to multiple object pixels 310 the
Average brightness when one grayscale or in the second grayscale；
Gain coefficient setting module 520 is also used to according to gamma factor adjust gain coefficient, the gain coefficient being adjusted with
Penalty coefficient is provided commonly for compensating brightness of multiple object pixels 310 in the first grayscale or in the second grayscale.
In embodiments of the present invention, firstly, when the average brightness of multiple object pixels 310 of display panel 300 is set as
When the first average brightness, display panel 300 shows the test pictures of the first grayscale, and compensating module 510 is directed to the survey of the first grayscale
It tries picture and generates penalty coefficient, compensating module 510 is by penalty coefficient input display panel 300, so that multiple object pixels 310 exist
Brightness when the first grayscale is substantially uniform；Then, when the average brightness of multiple object pixels 310 of display panel 300 is arranged
When for the first average brightness, display panel 300 shows the test pictures of the second grayscale, and the second grayscale is different from the first grayscale, increasing
Beneficial coefficient setting module 520 sets gain coefficient for the test pictures of the second grayscale, and gain coefficient setting module 520 is by gain
Coefficient is transmitted to compensating module 510, and compensating module 510 is by gain coefficient and penalty coefficient input display panel 300, so that display
Brightness of the multiple object pixels 310 of panel 300 in the second grayscale is substantially uniform；Then, multiple when display panel 300
When the average brightness of object pixel 310 is set as the second average brightness, the second average brightness is different from the first average brightness, display
Panel 300 show the test pictures gamma factor setting module 530 of the first grayscale perhaps the second grayscale for the first grayscale or
The test pictures of second grayscale, set gamma factor, gamma factor correspond to multiple object pixels 310 in the first grayscale or
The second average brightness in the second grayscale；Then, when the average brightness of multiple object pixels 310 of display panel 300 is arranged
When for the second average brightness, display panel 300 shows that the test pictures of the first grayscale or the second grayscale, gamma factor set mould
Gamma factor is transmitted to gain coefficient setting module 520 by block 530, gain coefficient setting module 520 for the first grayscale or
The test pictures of second grayscale input the gain coefficient being adjusted and penalty coefficient according to gamma factor adjust gain coefficient
Display panel 300, so that multiple object pixels 310 of display panel 300 are bright in the first grayscale or in the second grayscale
It spends substantially uniform.Then, the bright of multiple object pixels 310 in display panel 300 is compensated in display brightness compensation device 500
After degree, in different grayscale, the brightness of multiple object pixels 310 of display panel 300 is substantially uniform；Also, in display surface
When the average brightness difference of multiple object pixels 310 of plate 300, the brightness of multiple object pixels 310 of display panel 300 is basic
It is upper uniform.
As shown in figure 16, in embodiments of the present invention, display brightness compensation device 500 further include brightness control module 540,
Memory module 550；Brightness control module 540 controls gain coefficient setting module 520 and sets gain coefficient, according to gamma factor tune
Whole gain coefficient, and control gamma factor setting module 530 and set gamma factor；Memory module 550 stores gain coefficient.
In embodiments of the present invention, brightness control module 540 controls gain coefficient setting module 520 first and sets gain system
Then number controls gamma factor setting module 530 and sets gamma factor, then obtains gamma from gamma factor setting module 530
Then gamma factor is transmitted to gain coefficient setting module 520 by coefficient, then control 520 basis of gain coefficient setting module
Gamma factor adjust gain coefficient；It sets gain coefficient in gain coefficient setting module 520 or is adjusted according to gamma factor and increase
After beneficial coefficient, gain coefficient is transmitted to memory module 550 by gain coefficient setting module 520, and memory module 550 stores gain system
Number.
In conclusion the present invention provides a kind of display brightness compensation method and a kind of display brightness compensation device, mending
After the brightness for repaying multiple object pixels in display panel, in different grayscale, the brightness of multiple object pixels of display panel
Substantially uniformly；Also, in the average brightness difference of multiple object pixels of display panel, multiple target pictures of display panel
The brightness of element is substantially uniform.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (13)
1. a kind of display brightness compensation method, which is characterized in that the method is used to compensate multiple target pictures in display panel
The brightness of element；
The described method includes:
Penalty coefficient is generated, the penalty coefficient is bright in the first grayscale for compensating one or more described object pixel
Degree, first grayscale are sampling grayscale；
Gain coefficient is set, the gain coefficient and the penalty coefficient are provided commonly for compensating one or more target picture
Brightness of the element in multiple second grayscale, second grayscale are non-sampled grayscale；
Gamma factor is set, the gamma factor corresponds to multiple object pixels in first grayscale or described
Average brightness when the second grayscale；
The gain coefficient is adjusted according to the gamma factor, the gain coefficient being adjusted is used jointly with the penalty coefficient
Brightness when compensating multiple object pixels in first grayscale or in second grayscale.
2. the method according to claim 1, wherein the method also includes: in the setting gamma factor
Before step, determine the gamma factor and multiple object pixels in first grayscale or in second grayscale
Average brightness corresponding relationship.
3. the method according to claim 1, wherein the method also includes: it is described according to the gamma be
Before number adjusts the step of gain coefficient, gain coefficient described in multiple groups is generated, gain coefficient described in every group includes multiple described
Gain coefficient, each of multiple described gamma factors gamma factor is corresponding to gain coefficient described in one group.
4. according to the method described in claim 3, it is characterized in that, described adjust the gain coefficient according to the gamma factor
The step of include: for the gamma factor, select corresponding one group described in gain coefficient.
5. according to the method described in claim 4, it is characterized in that, described adjust the gain coefficient according to the gamma factor
The step of further include: in the gain coefficient described in corresponding one group selected, a gain coefficient is selected, is selected
The gain coefficient and the penalty coefficient be provided commonly for compensating multiple object pixels in first grayscale or
Brightness when second grayscale.
6. the method according to claim 1, wherein generating one group before the setting gain coefficient the step of
The gain coefficient, gain coefficient described in one group include multiple gain coefficients, the second ash of each of multiple described second grayscale
Rank corresponds to a gain coefficient.
7. according to the method described in claim 6, it is characterized in that, the step of setting gain coefficient includes: for multiple
The second grayscale of each of second grayscale, selects the corresponding gain coefficient, and the gain coefficient and the compensation are
Number is provided commonly for compensating brightness of multiple object pixels in multiple second grayscale.
8. according to the method described in claim 6, it is characterized in that, each of multiple described second grayscale the second grayscale and one
The corresponding relationship of a gain coefficient in the group gain coefficient is linear either discrete.
9. the method according to claim 1, wherein multiple object pixels are divided into multiple target picture sub-primes
Region；
The method also includes: before the setting gain coefficient the step of, generate one group described in gain coefficient, increase described in one group
Beneficial coefficient includes multiple gain coefficients, each of multiple described object pixel subregions object pixel subregion pair
The Ying Yuyi gain coefficients.
10. according to the method described in claim 9, it is characterized in that, the step of setting gain coefficient includes: for multiple
Each of the object pixel subregion object pixel subregion selects the corresponding gain coefficient, the gain
Coefficient and the penalty coefficient are provided commonly for compensating the brightness of multiple object pixel subregions.
11. a kind of display brightness compensation device, which is characterized in that described device is used to compensate multiple target pictures in display panel
The brightness of element；
Described device includes compensating module, gain coefficient setting module, gamma factor setting module；
The compensating module is for generating penalty coefficient, and the penalty coefficient is for compensating one or more object pixel
Brightness in the first grayscale, first grayscale are sampling grayscale；
For setting gain coefficient, the gain coefficient is provided commonly for mending the gain coefficient setting module with the penalty coefficient
One or more brightness of the object pixel in multiple second grayscale is repaid, second grayscale is non-sampled grayscale；
The gamma factor setting module corresponds to multiple object pixels and exists for setting gamma factor, the gamma factor
Average brightness when first grayscale or in second grayscale；
The gain coefficient setting module is also used to adjust the gain coefficient, the increasing being adjusted according to the gamma factor
Beneficial coefficient and the penalty coefficient are provided commonly for compensating multiple object pixels in first grayscale or described the
Brightness when two grayscale.
12. device according to claim 11, which is characterized in that described device further includes brightness control module, storage mould
Block；
The brightness control module controls the gain coefficient setting module and sets the gain coefficient, according to the gamma factor
The gain coefficient is adjusted, and controls the gamma factor setting module and sets the gamma factor；
The memory module stores the gain coefficient.
13. a kind of display brightness compensation system, which is characterized in that the system comprises photographic device, display panel, claims
Display brightness compensation device described in any one of 11 to 12；
The photographic device is connect with the display brightness compensation device, the display panel and the display brightness compensation device
Connection；
The display panel is for showing test pictures, and for the photographic device for shooting the test pictures, the display is bright
It spends compensation device and calculates offset data for the test pictures, the offset data includes penalty coefficient, gain coefficient.
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