CN108376532A - A kind of luminance compensation method and device of display device - Google Patents
A kind of luminance compensation method and device of display device Download PDFInfo
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- CN108376532A CN108376532A CN201810228125.8A CN201810228125A CN108376532A CN 108376532 A CN108376532 A CN 108376532A CN 201810228125 A CN201810228125 A CN 201810228125A CN 108376532 A CN108376532 A CN 108376532A
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The embodiment of the present invention provides a kind of luminance compensation method and device of display device, is related to display technology field, can solve to be only capable of adjusting the limitation of the brightness of sub-pix by compensating threshold voltage in the prior art；The display device includes multiple sub-pixes, and the luminance compensation method of the display device includes：Intrinsic brilliance value of each sub-pix when inputting the display data of multiple settings respectively is obtained, multiple display datas set is the part values in the display data value range of sub-pix；Target brightness value according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting with the sub-pix when inputting the display data of the setting, obtain the compensation map relationship of sub-pix, compensation map relationship is the correspondence of each first display data and the second display data in the display data value range of sub-pix, second the first display data of display data pair obtains after compensating, and the second display data is located in the display data value range of sub-pix.
Description
Technical field
The present invention relates to the luminance compensation methods and device of display technology field more particularly to a kind of display device.
Background technology
An important parameter index of the uniformity of the display picture of display device as evaluation display device quality；Especially
For Organic Light Emitting Diode (Organic Light Emitting Diode, abbreviation OLED) display device, due to technique, material
The phenomenon that the reason of material and design etc., usually will produce brightness disproportionation, to cause the quality of display picture to reduce.
For show picture brightness unevenness phenomenon, in the prior art generally to because of threshold voltage drift or variation draw
The brightness disproportionation problem risen, luminance compensation is carried out by way of compensating threshold voltage, so that the brightness uniformity of display picture,
However brightness disproportionation caused by the factor other than threshold voltage can not be compensated by the way of compensating threshold voltage,
To cannot fundamentally solve the problems, such as the brightness disproportionation of real device.
Invention content
The embodiment of the present invention provides a kind of luminance compensation method and device of display device, can solve in the prior art
It is only capable of adjusting the limitation of the brightness of sub-pix by compensating threshold voltage.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
On the one hand the embodiment of the present invention provides a kind of luminance compensation method of display device, the display device includes multiple
Sub-pix, the luminance compensation method include：Each sub-pix is obtained when inputting the display data of multiple settings respectively
Intrinsic brilliance value, the multiple display data set takes as the part in the display data value range of the sub-pix
Value；It is somebody's turn to do in input with the sub-pix according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting
The target brightness value when display data of setting, obtains the compensation map relationship of the sub-pix, and the compensation map relationship is
The correspondence of each first display data and the second display data in the display data value range of the sub-pix, described
Two display datas obtain after being compensated to first display data, and second display data is located at the sub-pix
Display data value range in.
Further, the luminance compensation method further includes：Judge that the sub-pix is inputting the aobvious of multiple settings respectively
Registration according to when intrinsic brilliance value whether belong to corresponding brightness and deviate in range, if the display data of multiple settings is corresponding more
At least one intrinsic brilliance value deviates range beyond corresponding brightness in a intrinsic brilliance value, then is being inputted according to the sub-pix
Target of the intrinsic brilliance value with the sub-pix when inputting the display data of the setting when display data of each setting
Brightness value obtains the compensation map relationship of the sub-pix.
Further, the intrinsic brilliance value according to the sub-pix when inputting the display data of each setting
With target brightness value of the sub-pix when inputting the display data of the setting, the compensation map relationship packet of the sub-pix is obtained
It includes：It is somebody's turn to do in input with the sub-pix according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting
The target brightness value when display data of setting obtains multiple offset datas of the sub-pix, according to the more of the sub-pix
A offset data obtains the compensation map relationship of the sub-pix.
Further, the reality for obtaining each sub-pix when inputting the display data of multiple settings respectively is bright
Angle value includes：For the display data of each setting, each sub-pix is obtained in the display for repeatedly inputting the setting
Multiple brightness values when data, and correspond to using the average value of the multiple brightness value as the sub-pix display data of the setting
Under intrinsic brilliance value.
Further, the reality for obtaining each sub-pix when inputting the display data of multiple settings respectively is bright
Angle value includes：Each sub-pix is obtained in the intrinsic brilliance for inputting the corresponding display data of multiple gamma reference voltages respectively
Value.
Further, the multiple sub-pix is all sub-pixes in the effective display area of the display device.
Further, target brightness value of the sub-pix when inputting the display data set as：The setting
Display data on gamma curve corresponding brightness value；Alternatively, the sub-pix is when inputting the display data of the setting
Target brightness value be：The sub-pix of same color is when inputting the display data of the setting, each sub-pix pair
The average brightness value being located in the intrinsic brilliance value answered in the first range of luminance values；Wherein, first range of luminance values is：Together
The highest range of luminance values of the frequency of occurrences in the corresponding intrinsic brilliance value of each sub-pix of one color；Alternatively, the Asia picture
Target brightness value of the element when inputting the display data set as：Each sub-pix of same color is set described in input
The average brightness value of intrinsic brilliance value when fixed display data.
On the other hand the embodiment of the present invention also provides a kind of luminance compensating mechanism of display device, the display device includes
Multiple sub-pixes, the luminance compensating mechanism include：Luminance obtaining unit：It is being inputted respectively for obtaining each sub-pix
Intrinsic brilliance value when the display data of multiple settings, the multiple display data set is the display data of the sub-pix
Part value in value range；Compensation map Relation acquisition unit：For inputting each described set according to the sub-pix
Target brightness value of the intrinsic brilliance value with the sub-pix when inputting the display data of setting when fixed display data, obtains
The compensation map relationship of the sub-pix, the compensation map relationship are each in the display data value range of the sub-pix
The correspondence of first display data and the second display data, second display data are carried out to first display data
It is obtained after compensation, and second display data is located in the display data value range of the sub-pix.
Further, the luminance compensating mechanism further includes judging unit；The judging unit is for judging the sub- picture
Whether intrinsic brilliance value of the element when inputting the display data of multiple settings respectively belongs to corresponding brightness and deviates range, if described
It is at least one in the corresponding multiple intrinsic brilliance values of display data of multiple settings to deviate range beyond corresponding brightness, then pass through
The compensation map Relation acquisition unit obtains the compensation map relationship of the sub-pix.
Another further aspect of the embodiment of the present invention also provides a kind of display device, and the display device includes multiple sub-pixes, institute
It further includes sequence controller and data drive circuit to state display device；The sequence controller is used for each sub-pix
First display data generates the second display data according to the compensation map relationship that luminance compensation method above-mentioned is got, and exports
To the data drive circuit.
The embodiment of the present invention provides a kind of luminance compensation method and device of display device, which includes multiple Asias
The luminance compensation method of pixel, the display device includes：Each sub-pix is obtained in the display data for inputting multiple settings respectively
When intrinsic brilliance value, multiple display datas set is the part values in the display data value range of sub-pix；According to
Intrinsic brilliance value of the sub-pix when inputting the display data of each setting is with the sub-pix in the display data for inputting the setting
When target brightness value, obtain the compensation map relationship of sub-pix, compensation map relationship is the display data value model of sub-pix
The correspondence of interior each first display data and the second display data is enclosed, the second display data is carried out to the first display data
It is obtained after compensation, the second display data is located in the display data value range of sub-pix.
In conclusion the intrinsic brilliance value of sub-pix is directly measured in the present invention, and according to intrinsic brilliance value and target
Brightness value obtains sub-pix each first display data in display data value range and is closed with the second display data compensation map
System, so, in actual display, can reflect corresponding first display data of each sub-pix according to the compensation of acquisition
The relationship of penetrating be compensated after the second display data, to be used to carry out actual display, so that sub-pix is carrying out
Brightness value when display with target brightness value more closely, namely compared with the prior art in be only capable of by compensate threshold voltage come
The brightness for adjusting sub-pix causes the limitation of adjusting display brightness uniformity (for example, only can not by compensating threshold voltage
Solve the problems, such as that display brightness is uneven caused by other factors) for, by directly to measuring the bright of sub-pix in the present invention
It spends to compensate, can solve the problems, such as display device display brightness unevenness (Mura) caused by arbitrary factor, also can
Enough display brightness for inherently more fully solving the problems, such as display device are uneven.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow chart of the luminance compensation method of display device provided in an embodiment of the present invention；
Fig. 2 is the signal that a kind of brightness curve of sub-pix provided in an embodiment of the present invention deviates range curve with brightness
Figure；
Fig. 3 is a kind of schematic diagram of gamma datum curve and intrinsic brilliance value curve provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another gamma datum curve and intrinsic brilliance value curve provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
With in the prior art, be only capable of by measure threshold voltage come to display device carry out luminance compensation for, the present invention
A kind of applicability of embodiment offer is wider, more fully luminance compensation method, compensation method includes based on display device itself
The intrinsic brilliance of multiple sub-pixes itself and the difference of object brightness come to sub-pix carry out luminance compensation.
Certainly, it is for multiple in display device using the luminance compensation method in the present invention it should here be understood that arriving
In sub-pix for single sub-pix, wherein for multiple sub-pixes in display device, multiple sub-pixes herein can
Be display device effective display area in all sub-pixes, can also be display device effective display area in subregion
Interior all sub-pixes are (for example, it may be possible to since the brightness that manufacture craft be easy to cause subregion has differences, in practice
Only the subregion can be compensated), the present invention is not especially limited this, can select to need in practice as needed
Carry out the region of luminance compensation.
The luminance compensation method in the present invention is described further below.
Specifically, as shown in Figure 1, the luminance compensation method includes：
Step S101, intrinsic brilliance value of each sub-pix when inputting the display data of multiple settings respectively is obtained, it is more
A display data set is the part value in the display data value range of sub-pix.
Specifically, in practice generally preferably, the display data of above-mentioned multiple settings can be multiple gamma reference voltages
Corresponding display data；Namely preferred above-mentioned steps S101 is：It obtains each sub-pix and is inputting multiple gamma benchmark respectively
The intrinsic brilliance value of the corresponding display data of voltage；For example, the corresponding display data of multiple gamma reference voltage can be 0 ash
Rank, 63 grayscale, 127 grayscale, the corresponding display data of 255 grayscale, but it is not restricted to this；Following embodiment is above-mentioned
For multiple display datas set is 0 grayscale, 63 grayscale, 127 grayscale, the corresponding display datas of 255 grayscale, to this hair
It is bright to be described further.
Step S102, the intrinsic brilliance value according to sub-pix when inputting the display data of each setting exists with the sub-pix
The target brightness value when display data of the setting is inputted, the compensation map relationship of the sub-pix is obtained, compensation map relationship is
The correspondence (namely each the of each first display data and the second display data in the display data value range of sub-pix
One display data corresponds second display data respectively), the second display data is compensated to the first display data
It obtains afterwards, the second display data is located in the display data value range of sub-pix.
Herein it should be noted that by the way that the first display data is obtained the second display number according to compensation map Relation acquisition
According to if the second display data got has exceeded the maximum value of display data value range, which is considered as this
Second display data will if same the second display data got has exceeded the minimum value of display data value range
Minimum value is considered as second display data；That is, in the case of extremely individual, the determination of the second display data is not
It is obtained completely by compensation map relationship by the first display data, needs to ensure the display number that the second display data is located at sub-pix
According in value range.
On this basis, it should be understood that, for above-mentioned intrinsic brilliance value and target brightness value, inevitably
It has a certain difference, in practice, according to the demand of client, the requirement etc. of product, display data of the sub-pix in input setting
When intrinsic brilliance value can certain brightness deviate range in be considered as qualification；Such as it is shown in Figure 2, in the aobvious of a setting
Registration according to (grayscale) if under intrinsic brilliance L be regarded as meeting actual brightness need between brightness L ' and brightness L "
It asks, it is target brightness value that can also be considered as the brightness value；Certainly, it further should be understood that arrive, brightness deviation range herein may
According to the difference of product, difference of customer requirement etc., it may appear that certain difference selects according to the actual needs, this hair
It is bright that this is not especially limited.
Based on this, luminance compensation method of the invention after step slol, can also include before step S102：
Judge whether intrinsic brilliance value of the sub-pix when inputting the display data of multiple settings respectively belongs to corresponding bright
Degree deviates in range, if at least one intrinsic brilliance value exceeds in the corresponding multiple intrinsic brilliance values of the display data of multiple settings
Corresponding brightness deviates range (namely thinking that the brightness uniformity of the display device is unqualified at this time), thens follow the steps S102,
Namely it executes and above-mentioned is being inputted with the sub-pix according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting
The target brightness value when display data of the setting, the step of obtaining the compensation map relationship of the sub-pix, to ensure
By compensation map relationship the first display data that sub-pix inputs is compensated to obtain the second display number when actual display
According to so that the brightness value that corresponding pixel is shown is identical or close as target brightness value.
Herein it should be noted that for above-mentioned brightness deviates range, its brightness of the sub-pix of different colours deviates
Range may have certain difference, in practice, for different colours sub-pix intrinsic brilliance value whether ultra-brightness deviate
The judgement of range needs selection brightness corresponding with its color to deviate range.
In conclusion the intrinsic brilliance value of sub-pix is directly measured in the present invention, and according to intrinsic brilliance value and target
Brightness value obtains sub-pix each first display data in display data value range and is closed with the second display data compensation map
System, so, in actual display, can reflect corresponding first display data of each sub-pix according to the compensation of acquisition
The relationship of penetrating be compensated after the second display data, to be used to carry out actual display, so that sub-pix is carrying out
Brightness value when display with target brightness value more closely, namely compared with the prior art in be only capable of by compensate threshold voltage come
The brightness for adjusting sub-pix causes the limitation of adjusting display brightness uniformity (for example, only can not by compensating threshold voltage
Solve the problems, such as that caused by other factors, display brightness is uneven), in the present invention by directly to measure the brightness of sub-pix come
It compensates, can solve the problems, such as display device display brightness unevenness (Mura) caused by arbitrary factor, it also can be from
Substantially more fully solve the problems, such as that the display brightness of display device is uneven.
On this basis, it in order to ensure that the compensation map relationship got is accurate as far as possible, is necessarily required to protect in practice
Card gets the accuracy of intrinsic brilliance value of the sub-pix when inputting the display data of each setting, and therefore, the present invention is preferred
, for obtaining intrinsic brilliance value of each sub-pix when inputting the display data of multiple settings respectively in step S101
Including：For the display data of each setting, it is multiple when repeatedly inputting the display data of the setting to obtain each sub-pix
Brightness value, and correspond to using the average value of multiple brightness values as the sub-pix intrinsic brilliance value under the display data of the setting.
So, by regarding the average value of the brightness value repeatedly obtained as intrinsic brilliance value, can reduce practical bright
The error of angle value, namely the accuracy of intrinsic brilliance value is improved, to ensure the accuracy of the compensation map relationship got, into
And improve the accuracy that luminance compensation is carried out to sub-pix.
In addition, below doing target brightness value of the sub-pix in step S102 when inputting the display data of the setting into one
The explanation of step.
Specifically, above-mentioned target brightness value can be：The display data of setting corresponding brightness value on gamma curve.
Certainly, above-mentioned target brightness value may be：Display data of all sub-pixes of same color in input setting
When, the average brightness value that is located in the corresponding intrinsic brilliance value of each sub-pix in the first range of luminance values；Wherein, the first brightness value
Ranging from：The highest range of luminance values of the frequency of occurrences in the corresponding intrinsic brilliance value of each sub-pix of same color.
For example, it is assumed that all sub-pixes of same color are when inputting the display data of a setting, each sub-pix is corresponding
Intrinsic brilliance value points 60,80,80,90,90,90,120 (in practice intrinsic brilliance Distribution value be in normal distribution trend), at this time
Intrinsic brilliance value is concentrated mainly in the first range of luminance values of 80-90, can will be located at the first brightness value model in the case
Target brightness value of 80,80,90,90,90 average brightness value 86 as the color sub-pix in enclosing, to brightness value deficiency
86 sub-pix needs are just compensated, and negative compensation is carried out beyond 86 sub-pix for brightness value；Certainly only it is herein
The illustration of signal.
In addition, above-mentioned target brightness value can also be：Each sub-pix of same color is in the display data of input setting
Intrinsic brilliance value average brightness value.
For example, it is assumed that all sub-pixes of same color are in the display data of input setting, the corresponding reality of each sub-pix
Border brightness value points 60,80,80,90,90,90,120, all Asias that can be by the average value 87 of this group of brightness value as the color
The target brightness value of pixel.
On this basis, below in above-mentioned steps S102 according to sub-pix when inputting the display data of each setting
Target brightness value of the intrinsic brilliance value with the sub-pix when inputting the display data of the setting, the compensation for obtaining the sub-pix are reflected
The relationship of penetrating is described further.
For example, it may be according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting and the sub-pix
Target brightness value when inputting the display data of the setting, obtains multiple offset datas (grey scale pair of compensation of sub-pix
The data answered), and according to multiple offset datas of sub-pix, obtain the compensation map relationship of sub-pix.
Specifically, for the intrinsic brilliance value L according to sub-pix when inputting the display data of each settingIt is practicalWith the Asia
Target brightness value L of the pixel when inputting the display data of the settingTarget, can be with for the multiple offset datas for obtaining sub-pix
It is according to intrinsic brilliance value LIt is practicalWith target brightness value LTargetDifference (i.e. LIt is practical-LTarget) obtain multiple compensation numbers of sub-pix
According to；Can also be according to intrinsic brilliance value LIt is practicalWith target brightness value LTargetRatio (i.e. LIt is practical/LTarget) obtain the more of sub-pix
A offset data；It can also be according to intrinsic brilliance value LIt is practicalWith target brightness value LTargetRatio inverse (namely LTarget/LIt is practical)
Multiple offset datas of sub-pix are obtained, this is not limited by the present invention.
In another example can also be the intrinsic brilliance value according to sub-pix when inputting the display data of each setting and the Asia
Target brightness value of the pixel when inputting the display data of the setting, directly acquires the compensation map relationship of sub-pix.
Specifically, for corresponding brightness value, being referred on gamma curve by the display data that target brightness value is setting
Fig. 3, Y1 are gamma curve 2.2 (Gamma2.2), are known curve, in 0 grayscale, 63 grayscale, 127 grayscale, 255 ashes according to Y2
Broken line (certain 0 grayscale, 63 grayscale, 127 ashes connected between the corresponding display data of rank and corresponding intrinsic brilliance
Rank, at least one brightness for having exceeded setting of the corresponding intrinsic brilliance of 255 grayscale deviate range), Y2 can be obtained by calculation
Broken line in either segment (0~63,63~127,127~255) equation.
In the case, in conjunction with Y1 and Y2 can get sub-pix compensation map relationship namely sub-pix it is corresponding
The correspondence of each first display data and the second display data in display data value range.
Specifically, with reference to figure 3, it is assumed that in actual display, the first any display data corresponds to 63~127 grayscale
The display data of 90 grayscale in range, without compensation, the intrinsic brilliance of sub-pix is L1 at this time, with target
There are larger differences between brightness L2 (the object brightness L2 that can be obtained 90 grayscale according to Y1), using the technical side in the present invention
Case, the second display data that can be obtained by Y2 under object brightness L2 (also bring L2 to Y2 in 63~127 grey-scale ranges into
Inside obtain corresponding display data), in this situation, the corresponding brightness L1 ' of the second display data is compared to the first display data pair
The brightness L1 answered and object brightness L2 is closer or is equal to object brightness L2, namely can get sub-pix by Y1 and Y2
Correspondence (the i.e. compensation map pass of each first display data and the second display data in corresponding display data value range
System), to solve the problems, such as the display brightness of display device unevenness；Certainly only it is the display number with 90 grayscale of signal herein
It is illustrated for, other display datas can refer to the above process, and details are not described herein again.
In addition, in order to which the accuracy namely the first display data that improve compensation map relationship are obtained by compensation map relationship
The corresponding brightness of the second display data arrived with object brightness more closely, in practice can to above-mentioned Y2 according to Y1 type into
Row fitting (can refer to the Y2 in Fig. 4), can also be intended according to actual compensation needs according to other kinds of curve certainly
It closes, the present invention is not especially limited this, can select suitable fit approach as needed in practice.
It should be noted that either using it is above-mentioned according to intrinsic brilliance value and target brightness value to by offset data come
The compensation map relationship corresponding with the second display data of the first display data in each sub-pix is obtained, according further to intrinsic brilliance
Value and target brightness value directly acquire the compensation map corresponding with the second display data of the first display data in each sub-pix and close
System, although different by the compensation map relationship that two ways obtains, the purpose of two kinds of compensation map relationships is identical, is
Show that the initial display data (the first display data) of picture compensates to obtain the second display number by compensation map relationship
According to, with meet to corresponding sub-pix input the second display data (corresponding pixel voltage) when intrinsic brilliance value compared to
Intrinsic brilliance value is closer to target brightness value when the sub-pix inputs the first display data (corresponding pixel voltage), and then realizes
The brightness uniformity of entire display picture.
Below by way of specific data to the present invention luminance compensation method be further described, signal entirely to have
For imitating the sub-pix in viewing area, with reference to following table：
As can be seen that part sub-pix (blackening thickened portion corresponding sub-pix R, G in upper table) is in setting ash in upper table
Under rank L64 (corresponding input voltage be 6.4V), there are luminance difference between intrinsic brilliance value and target brightness value, sub-pix R at this time
Actual displayed grayscale with sub-pix G is respectively that there are differences between L60 and L56, namely display grayscale and setting grayscale, herein
In the case of, with reference to luminance compensation method above-mentioned, which is compensated, namely to input voltage 6.4V corresponding first
Display data is compensated by compensation map relationship, obtain the second display data (namely in upper table compensate after input voltage pair
The display data answered), at this point, second display data is input to above-mentioned Asia to be compensated by sequence controller (T-con)
Input voltage after the compensation that pixel R and sub-pix G, sub-pix R and sub-pix G are received is 6.8V and 7.2V, so that
Show that grayscale reaches consistent with setting grayscale L64 after sub-pix R and sub-pix G compensation, display brightness value and target are bright after compensation
Angle value is consistent, and then realizes the brightness uniformity of entire display picture.
The embodiment of the present invention also provides a kind of luminance compensating mechanism of display device, wherein display device includes multiple Asias
Pixel, the luminance compensating mechanism include：
Luminance obtaining unit：It is bright for obtaining reality of each sub-pix when inputting the display data of multiple settings respectively
Angle value, multiple display datas set is the part values in the display data value range of sub-pix.
Herein it should be noted that inputting the aobvious of multiple settings respectively to accurately obtain each sub-pix as far as possible
Registration according to when intrinsic brilliance value need to ensure entirely to detect environment and be in absolute dark state in actual detection process
Under.
Compensation map Relation acquisition unit：For bright according to reality of the sub-pix when inputting the display data of each setting
Target brightness value of the angle value with the sub-pix when inputting the display data of the setting, obtains the compensation map relationship of sub-pix,
Compensation map relationship is that each first display data is corresponding with the second display data in the display data value range of sub-pix
Relationship, second the first display data of display data pair obtains after compensating, and the second display data is located at sub-pix
In display data value range.
So, the luminance compensating mechanism is by directly measuring the intrinsic brilliance value of sub-pix in display device, and
Sub-pix each first display data and the in display data value range is obtained according to intrinsic brilliance value and target brightness value
Two display data compensation map relationships so, can be corresponding by each sub-pix in the actual displayed of display device
First display data be compensated according to the compensation map relationship of acquisition after the second display data, it is actual aobvious to be used to carry out
Show so that brightness value of the sub-pix when being shown with target brightness value more closely, namely compared to existing
It is only capable of adjusting the brightness of sub-pix by compensating threshold voltage in technology, causes the limitation of adjusting display brightness uniformity
(for example, only can not solve the problems, such as that display brightness is uneven caused by other factors by compensating threshold voltage), the present invention
In by directly being compensated to the brightness for measuring sub-pix, can solve display device show caused by arbitrary factor it is bright
Uneven problem (Mura) is spent, also inherently can more fully solve the problems, such as that the display brightness of display device is uneven.
Further, since the intrinsic brilliance value and target brightness value of sub-pix inevitably have certain difference
It is different, in practice, according to the demand of client, the requirement etc. of product, intrinsic brilliance of the sub-pix in the display data of input setting
Value, which can deviate in certain brightness in range, is considered as qualification, is based on this, which can also include judging unit,
The judging unit is for judging whether intrinsic brilliance value of the sub-pix when inputting the display data of multiple settings respectively belongs to pair
The brightness answered deviates range, if at least one beyond corresponding in the corresponding multiple intrinsic brilliance values of the display data of multiple settings
Brightness deviates range, then compensation map Relation acquisition unit obtains the compensation map relationship of sub-pix.
That is, in judging unit judges intrinsic brilliance value of the sub-pix when inputting the display data of multiple settings respectively
When at least one deviation range beyond corresponding brightness, then passes through compensation map Relation acquisition unit and execute above-mentioned luminance compensation side
In method the step of step S102.
The embodiment of the present invention also provides a kind of display device, which includes multiple sub-pixes, while the display fills
It further includes sequence controller (T-con) and data drive circuit to set, and sequence controller is used for the first display of each sub-pix
Data generate the second display data according to the compensation map relationship that any luminance compensation method above-mentioned is got, and export extremely
Data drive circuit.
Herein it should be noted that for display device, luminance compensating mechanism above-mentioned can be integrated to display
In device, for example, the luminance obtaining unit in luminance compensating mechanism can be integrated in respectively in the preparation process of display device
In sub-pix, the processor or sequence controller that compensation map Relation acquisition unit can be integrated in inside display device
In, so that display device itself can realize the measurement to sub-pix brightness and the acquisition of compensation map relationship, and press
The second display data is generated according to compensation map relationship, and is exported to data drive circuit.
Luminance compensating mechanism above-mentioned can also be set and be independent two parts with display device, for example, luminance compensation fills
Luminance obtaining unit in setting can be ccd image sensor (Charge Coupled Device, CCD), lead to
The reality that overcompensation mapping relations acquiring unit (such as can be set in the processor of PC machine) is measured according to luminance obtaining unit
Border brightness value, acquisition compensation map relationship (it should ensure that the cleanliness factor of display screen surface when obtaining intrinsic brilliance using which,
It avoids influencing the propagation of light because of sundries, so that compensation map relationship inaccuracy causes false compensation)；Then it is obtained what is got
Compensation map relationship is taken to store into display device, it can be according to compensation map when being shown to meet display device
Relationship generates the second display data, and exports to data drive circuit, so as to solve display device because arbitrary factor causes
Display brightness unevenness problem, the display brightness that also inherently can more fully solve display device uneven asks
Topic.
Certainly, the luminance compensating mechanism in the present invention is not restricted to two kinds of set-up modes of above-mentioned offer, in practice may be used
, can also be by segment set in luminance compensating mechanism in display device with as needed, the present invention is not especially limited this；When
So, using the technical solution in the present invention, coding (code) data volume is larger, to beat (Takt in actual volume production
Time, TT) it is more demanding, HDMI (High Definition Multimedia Interface, high-resolution are mostly used in practice
Spend multimedia interface) realize rapid transmission.
Herein it should also be noted that, the display device at least may include liquid crystal display device (Liquid Crystal
Display, LCD) and Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display device, this is aobvious
It is any with display function that showing device can be applied to liquid crystal display, LCD TV, Digital Frame, mobile phone or tablet computer etc.
Product or component in.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of luminance compensation method of display device, the display device includes multiple sub-pixes, which is characterized in that described bright
Spending compensation method includes：
Obtain intrinsic brilliance value of each sub-pix when inputting the display data of multiple settings respectively, the multiple setting
Display data be the sub-pix display data value range in part value；
It is being inputted with the sub-pix according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting
The target brightness value when display data of the setting obtains the compensation map relationship of the sub-pix, the compensation map relationship
It is described for the correspondence of each first display data and the second display data in the display data value range of the sub-pix
Second display data obtains after being compensated to first display data, and second display data is located at the sub- picture
In the display data value range of element.
2. luminance compensation method according to claim 1, which is characterized in that the luminance compensation method further includes：
Judge whether intrinsic brilliance value of the sub-pix when inputting the display data of multiple settings respectively belongs to corresponding bright
Degree deviates in range, if at least one intrinsic brilliance value exceeds in the corresponding multiple intrinsic brilliance values of the display data of multiple settings
Corresponding brightness deviates range, then the intrinsic brilliance value according to the sub-pix when inputting the display data of each setting
With target brightness value of the sub-pix when inputting the display data of the setting, the compensation map relationship of the sub-pix is obtained.
3. luminance compensation method according to claim 1, which is characterized in that
The intrinsic brilliance value according to the sub-pix when inputting the display data of each setting exists with the sub-pix
The target brightness value when display data of the setting is inputted, the compensation map relationship for obtaining the sub-pix includes：
It is being inputted with the sub-pix according to intrinsic brilliance value of the sub-pix when inputting the display data of each setting
The target brightness value when display data of the setting obtains multiple offset datas of the sub-pix, according to the sub-pix
Multiple offset datas obtain the compensation map relationship of the sub-pix.
4. luminance compensation method according to claim 1, which is characterized in that
The intrinsic brilliance value that each sub-pix is obtained when inputting the display data of multiple settings respectively includes：
For the display data of each setting, each sub-pix is obtained when repeatedly inputting the display data of the setting
Multiple brightness values, and correspond to using the average value of the multiple brightness value as the sub-pix reality under the display data of the setting
Border brightness value.
5. luminance compensation method according to claim 1, which is characterized in that
The intrinsic brilliance value that each sub-pix is obtained when inputting the display data of multiple settings respectively includes：
Each sub-pix is obtained in the intrinsic brilliance value for inputting the corresponding display data of multiple gamma reference voltages respectively.
6. luminance compensation method according to claim 1, which is characterized in that
The multiple sub-pix is all sub-pixes in the effective display area of the display device.
7. according to claim 1-6 any one of them luminance compensation methods, which is characterized in that
Target brightness value of the sub-pix when inputting the display data set as：The display data of the setting is in gal
Corresponding brightness value on horse curve；
Alternatively, target brightness value of the sub-pix when inputting the display data set as：The Asia of same color
Pixel is located at the first brightness value model when inputting the display data of the setting in the corresponding intrinsic brilliance value of each sub-pix
Enclose interior average brightness value；Wherein, first range of luminance values is：The corresponding reality of each sub-pix of same color is bright
The highest range of luminance values of the frequency of occurrences in angle value；
Alternatively, target brightness value of the sub-pix when inputting the display data set as：Same color it is each described
The average brightness value of intrinsic brilliance value of the sub-pix when inputting the display data of the setting.
8. a kind of luminance compensating mechanism of display device, which is characterized in that the display device includes multiple sub-pixes, described bright
Spending compensation device includes：
Luminance obtaining unit：It is bright for obtaining reality of each sub-pix when inputting the display data of multiple settings respectively
Angle value, the multiple display data set is the part value in the display data value range of the sub-pix；
Compensation map Relation acquisition unit：For the reality according to the sub-pix when inputting the display data of each setting
Target brightness value of the border brightness value with the sub-pix when inputting the display data of the setting, the compensation for obtaining the sub-pix are reflected
Relationship is penetrated, the compensation map relationship is each first display data and second in the display data value range of the sub-pix
The correspondence of display data, second display data obtains after being compensated to first display data, and institute
The second display data is stated to be located in the display data value range of the sub-pix.
9. luminance compensating mechanism according to claim 8, which is characterized in that the luminance compensating mechanism further includes judging list
Member；
The judging unit is for judging intrinsic brilliance value of the sub-pix when inputting the display data of multiple settings respectively
Whether belong to corresponding brightness and deviate range, if in the corresponding multiple intrinsic brilliance values of the display data of the multiple setting at least
One is deviateed range beyond corresponding brightness, then the compensation of the sub-pix is obtained by the compensation map Relation acquisition unit
Mapping relations.
10. a kind of display device, the display device includes multiple sub-pixes, which is characterized in that the display device further includes
Sequence controller and data drive circuit；
The sequence controller is used for the first display data of each sub-pix according to the luminance compensation side described in power 1-7
The compensation map relationship that method is got generates the second display data, and exports to the data drive circuit.
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