CN109166549A - The driving method and display device of display device - Google Patents
The driving method and display device of display device Download PDFInfo
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- CN109166549A CN109166549A CN201811176302.9A CN201811176302A CN109166549A CN 109166549 A CN109166549 A CN 109166549A CN 201811176302 A CN201811176302 A CN 201811176302A CN 109166549 A CN109166549 A CN 109166549A
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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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- 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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- 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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The application discloses the driving method and display device of a kind of display device, and the driving method of display device is the following steps are included: the isolated degree of the image for obtaining pixel；According to the isolated degree of image, the correction factor of pixel is determined；According to correction factor, the display parameters of pixel are determined；Control pixel is shown according to display parameters；Wherein, brightness after main pixel correction is greater than the brightness before amendment, the revised brightness of sub-pixel is less than the brightness before amendment, and the brightness of the amendment main pixel in front and back and sub-pixel and change absolute value be less than or equal to that predetermined luminance is poor, the change absolute value of the coloration of amendment front and back pixel is less than or equal to default colour difference.Technical scheme increases the angle of visibility of display device under the premise of ensureing penetrance, reduces colour cast.
Description
Technical field
This application involves field of display technology, in particular to the driving method and display device of a kind of display device.
Background technique
In display device, especially liquid crystal display device, due to being limited by liquid crystal deflection, under different perspectives,
Relationship between the penetrance and driving voltage of display device will change, and cause the contrast for showing picture to reduce, visually
Angle becomes smaller, and generates colour cast.
Summary of the invention
The main purpose of the application is the driving method for proposing a kind of display device, it is intended to which solving can in above-mentioned display device
The technical issues of visual angle becomes smaller, and generates colour cast, improves the display quality of display device.
To achieve the above object, in the driving method for the display device that the application proposes, display device includes display panel,
The display panel includes the multiple pixels being arranged in array, and at least partly described pixel is main pixel, at least partly described picture
Element is sub-pixel；
The driving method of the display device the following steps are included:
Obtain the isolated degree of image of the pixel；
According to the isolated degree of described image, the correction factor of the pixel is determined；
According to the correction factor, the display parameters of the pixel are determined；
The pixel is controlled to show according to the display parameters；
Wherein, the brightness after the main pixel correction is greater than the brightness before amendment, and the revised brightness of sub-pixel is small
Brightness before amendment, and correct the front and back main pixel and the sub-pixel brightness and change absolute value be less than or equal to
Predetermined luminance is poor, and the change absolute value of the coloration of the amendment front and back pixel is less than or equal to default colour difference.
Optionally, the pixel includes at least one sub-pixel；
The image for obtaining the pixel isolates the step of spending and includes:
Obtain the first grayscale pixel in the pixel before each sub-pixel amendment0；
Obtain the second ash in the neighbor pixel within the first pre-determined distance adjacent with the pixel before each sub-pixel amendment
Rank pixelm；
Calculate the second grayscale of the neighbor pixel sub-pixel and the first grayscale of corresponding sub-pixel in the pixel
Absolute value of the difference Δm=| pixel0-pixelm|, it is denoted as the opposite grayscale Δ of the neighbor pixelm；
Compare the opposite grayscale ΔmWith preset gray scale threshold value Δ0, and add up opposite grayscale described in the neighbor pixel
ΔmMore than or equal to the preset gray scale threshold value Δ0Neighbor pixel number N (Δn≥Δ0)；
The number η of neighbor pixel after note normalization2N(Δn≥Δ0) be the pixel the isolated degree of image, wherein η2
For isolated degree normalization coefficient.
Optionally, the display parameters include in the first data level and the sub-pixel of the main pixel sub-pixel
Second data level of sub-pixel；
According to the correction factor, the step of determining the display parameters of the pixel, includes:
According to the grayscale of the sub-pixel before the first gamma value and amendment, the first gamma level of the sub-pixel is determined；
According to the grayscale of the sub-pixel before the second gamma value and amendment, the second gamma level of the sub-pixel is determined；
According to the correction factor, the first gamma level and the second gamma level, determine in the main pixel
First data level of sub-pixel；
According to the grayscale of the sub-pixel before third gamma value and amendment, the third gamma level of the sub-pixel is determined；
According to the correction factor, the first gamma level and the third gamma level, determine in the sub-pixel
Second data level of sub-pixel；
Wherein, second gamma value and the third gamma value mix corresponding gamma response and are equivalent to first gal
Horse is worth corresponding gamma response, and second gamma value is not equal to the third gamma value.
Optionally, the adjusted coefficient K, the first gamma level U1, the second gamma level U2With first number
According to level Ud1Between meet Ud1=(1-K) * U1+K*U2；
The adjusted coefficient K, the first gamma level U1, the third gamma level U3With second data level
Ud2Between meet Ud2=(1-K) * U1+K*U3；
Wherein, the adjusted coefficient K meets 0≤K≤1.
Optionally, the adjusted coefficient K of the pixel meets K=KU·KT·KH·KS；
Wherein, KUFor the isolated degree correction factor determining according to the isolated degree of the image of the pixel, KTFor according to the pixel
Picture frequency determine frequency correction factor, KHFor the tonal correction coefficient determined according to the tone of the pixel, KSAccording to
The saturation degree correction factor that the saturation degree of the pixel determines, and 0≤KU≤ 1,0≤KT≤ 1,0≤KH≤ 1,0≤KS≤1。
Optionally, when the isolated degree U of the image of the pixel, which is less than or equal to first, presets isolated spend, the orphan of the pixel
Vertical degree adjusted coefficient KUMeet KU=1；
It is greater than the described first default isolated degree, and the isolated degree of image of the pixel when the image of the pixel isolates degree U
When presetting isolated spend less than or equal to second, the isolated degree adjusted coefficient K of the pixelUMeet KU=aU+b；
When the isolated degree U of the image of the pixel, which is greater than described second, presets isolated spend, the isolated degree amendment of the pixel
COEFFICIENT KUMeet KU=0；
Wherein, the described first default isolated degree is less than or equal to the described second default isolated degree, and the first coefficient a meets a < 0,
Second coefficient b meets b > 0.
Optionally, when the picture frequency T of the pixel is less than or equal to the first predeterminated frequency, the frequency of the pixel is repaired
Positive coefficient KTMeet KT=1；
When the pixel picture frequency T be greater than first predeterminated frequency, and the picture frequency T of the pixel be less than or
When equal to the second predeterminated frequency, the adjusted coefficient K of the pixelTMeet KT=cT+d；
When the picture frequency T of the pixel is greater than second predeterminated frequency, the adjusted coefficient K of the pixelTMeet KT
=0；
Wherein, the picture frequency T of the pixel meets T=η1max(Δn), η1For frequency normalization coefficient, max (Δn)
For the maximum value in the neighbor pixel within adjacent second pre-determined distance with respect to grayscale, first predeterminated frequency is less than or equal to
Second predeterminated frequency, third coefficient c meet c<0, and the 4th coefficient d meets d>0.
Optionally, when the tone before the pixel correction is in default tone range, the tonal correction of the pixel
COEFFICIENT KHMeet KH=KH1；
When the tone before the pixel correction is in outside default tone range, the tonal correction COEFFICIENT K of the pixelHIt is full
Sufficient KH=KH2；
Wherein, the minimum tone of the default tone range is greater than 8 °, and the maximum tone of the default tone range is less than
Or it is equal to 24 °, and KH1>KH2；
When saturation degree S before the pixel correction is less than or equal to the first default saturation degree, the saturation degree of the pixel
Adjusted coefficient KSMeet KS=0；
Saturation degree S before the pixel correction is greater than the described first default saturation degree, and full before the pixel correction
When being less than or equal to the second default saturation degree with degree, the saturation degree adjusted coefficient K of the pixelSMeet KS=eS+f；
When saturation degree S before the pixel correction is greater than the second default saturation degree, the saturation degree of the pixel is repaired
Positive coefficient KSMeet KS=1；
Wherein, the described first default saturation degree is less than or equal to the described second default saturation degree, and the 5th coefficient e meets e > 0,
6th coefficient f meets f≤0.
Optionally, the pixel includes red sub-pixels, green sub-pixel and blue sub-pixel；
According to the correction factor, determine that the display parameters step of the pixel includes:
According to the coloration before the pixel correction, the grayscale and the grayscale of the blue sub-pixel of the red sub-pixels are adjusted
Ratio, so that the change absolute value of the coloration of the amendment front and back pixel is less than or equal to default colour difference；And/or
Brightness and the revised brightness of the sub-pixel according to the correction factor, after determining the main pixel correction；
Brightness and maximum brightness after comparing the main pixel correction；
Brightness when brightness after the main pixel correction is greater than the maximum brightness, after updating the main pixel correction
For the maximum brightness；
According to the brightness after the updated main pixel correction, the revised brightness of the sub-pixel is updated；
Compare the revised brightness of the sub-pixel and minimum brightness；
When the revised brightness of the sub-pixel is less than the minimum brightness, the revised brightness of the sub-pixel is updated
For the minimum brightness；
Brightness according to the updated revised brightness of sub-pixel, after updating the main pixel correction.
To achieve the above object, the application also proposes that a kind of display device, the display device include display panel and drive
Dynamic component, the display panel include the multiple pixels being arranged in array, and at least partly described pixel is main pixel, at least partly
The pixel is sub-pixel；The driving component is electrically connected with the display panel, and the driving component includes the isolated degree of image
Obtain module, correction factor module, display parameters module and display control module, wherein the isolated degree of described image obtains module
To obtain the picture frequency of the pixel；The correction factor module is electrically connected with described image frequency acquisition module, described
Correction factor module is to determine the correction factor of the pixel according to described image frequency；The display parameters module and institute
The electrical connection of correction factor module is stated, the display parameters module is to determine the display of the pixel according to the correction factor
Parameter；The display control module is electrically connected with the display parameters module, and the display control module is to control the picture
Element is shown according to the display parameters；Wherein, the brightness after the main pixel correction is greater than the brightness before amendment, the sub-pixel
Revised brightness is less than the brightness before amendment, and correct the front and back main pixel and the sub-pixel brightness and variation it is exhausted
Poor less than or equal to predetermined luminance to value, the change absolute value of the coloration of the amendment front and back pixel is less than or equal to default coloration
Difference.
In technical scheme, display device includes display panel, and display panel includes the multiple pictures being arranged in array
Element, at least partly pixel are main pixel, and at least partly pixel is sub-pixel；Obtain the isolated degree of image of pixel；According to image orphan
Vertical degree, determines the correction factor of pixel；According to correction factor, the display parameters of pixel are determined；Pixel is controlled according to display parameters
Display；Wherein, the brightness after main pixel correction is greater than the brightness before amendment, and the revised brightness of sub-pixel is less than bright before correcting
Degree, and correct the main pixel in front and back and sub-pixel brightness and change absolute value poor, the amendment front and back that is less than or equal to predetermined luminance
The change absolute value of the coloration of pixel is less than or equal to default colour difference.According to the isolated degree of the image of pixel in display picture, control
The display parameters for making main pixel and sub-pixel, make main pixel with partially bright status display, and sub-pixel is protected simultaneously with partially dark status display
The overall brightness and whole coloration substantially constant of display device amendment front and back are demonstrate,proved, so as to avoid small object parts in display picture
The distortion of image increases angle of visibility while the penetrance for having ensured display device, reduces colour cast, improves display
Quality.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is penetrance-driving voltage schematic diagram of the display device under different perspectives in an example；
Fig. 2 is the normalization brightness relationship schematic diagram under the positive visual angle of normalization brightness-in an example under anorthopia angle；
Fig. 3 is the normalization brightness relationship schematic diagram under the positive visual angle of normalization brightness-in another example under anorthopia angle；
Fig. 4 is the structural schematic diagram of display panel in one embodiment of driving method of the application display device；
Fig. 5 is the flow diagram of the driving method of display device in Fig. 4；
Fig. 6 is that a specific example is fallen into a trap the dot structure schematic diagram of the isolated degree of nomogram picture；
Fig. 7 is the first gamma value, the second gamma value and third gal in one embodiment of driving method of the application display device
Horse is worth corresponding gamma and responds schematic diagram；
Fig. 8 is that degree correction factor-picture frequency relationship is isolated in another embodiment of driving method of the application display device
Schematic diagram；
Fig. 9 is that frequency correction factor-image isolates degree relationship in the another embodiment of driving method of the application display device
Schematic diagram；
Figure 10 is the dot structure schematic diagram that picture frequency is calculated in another specific example；
Figure 11 is saturation degree correction factor-saturation degree relationship in the another specific example of driving method of the application display device
Schematic diagram；
Figure 12 is the structural schematic diagram of one embodiment of the application display device；
Figure 13 is the correction factor module of display device and the structural schematic diagram of display parameters module in Figure 12.
The embodiments will be further described with reference to the accompanying drawings for realization, functional characteristics and the advantage of the application purpose.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiment of the application, instead of all the embodiments.Base
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall in the protection scope of this application.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present application,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present application
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the meaning of the "and/or" occurred in full text is, and including three schemes arranged side by side, by taking " A and/or B " as an example, including A
The scheme that scheme or B scheme or A and B meet simultaneously.In addition, the technical solution between each embodiment can be combined with each other,
It but must be based on can be realized by those of ordinary skill in the art, when conflicting or nothing occurs in the combination of technical solution
Method realize when will be understood that the combination of this technical solution is not present, also not this application claims protection scope within.
The technical solution of the application will hereinafter be elaborated by taking liquid crystal display device as an example.As shown in Figure 1, one
In example, due to being limited by liquid crystal deflection, at anorthopia angle, penetrance-driving voltage curve phase of display device
It will drift about to the penetrance in the case of positive visual angle-driving voltage curve, cause the contrast for showing picture to reduce, angle of visibility
Become smaller, while generating colour cast.As in Fig. 2 and in Fig. 3 shown in dotted line, in the ideal case, normalization brightness under anorthopia angle and
Normalization brightness under positive visual angle is in a linear relationship, however, as illustrated in solid line in figure 2, in practical situations, returning under anorthopia angle
The one normalization brightness changed under brightness and positive visual angle is in non-linear relation.As shown in figure 3, in another example, it is aobvious in order to correct
The angle of visibility of showing device becomes smaller and occurs the phenomenon that colour cast, pixel or sub-pixel is split as A and B two parts, and control part A
Different brightness is shown with part B.In Fig. 3, two chain-dotted lines respectively correspond the normalization brightness of part A and part B inclined
Relationship under visual angle and positive visual angle, wherein the brightness of part A actual displayed is higher, and the brightness of part B actual displayed is relatively low, and A
Part and the effect that finally mixes of part B as shown on the solid line in figure 3, close to ideal situation shown in dotted lines in Figure 3, to mention
The high angle of visibility of display device, reduces colour cast.However, this mode that subregion is carried out to pixel or sub-pixel itself, together
When will lead in display device pixel or the decline of the penetrance of sub-pixel, when in this way that the coloration of display device is visual
Angle from 45 ° improve to 63 ° when, penetrance is reduced to 3.7% from 5.1%, and display quality is deteriorated.
The application proposes a kind of driving method of display device, according to the picture frequency of pixel in display picture, control master
The display parameters of pixel and sub-pixel, so that the angle of visibility of display device is improved while ensureing the penetrance of display device,
Reduce colour cast, improves display quality.
In the embodiment of the application, as shown in figure 4, display device includes display panel, display panel includes in battle array
Multiple pixels of arrangement are arranged, at least partly pixel is main pixel 110 (main pixel), and at least partly pixel is sub-pixel 120
(sub pixel)；
As shown in figure 5, the driving method of display device the following steps are included:
Step S100, the isolated degree of image of pixel is obtained；
Step S200, according to the isolated degree of image, the correction factor of pixel is determined；
Step S300, according to correction factor, the display parameters of pixel are determined；
Step S400, control pixel is shown according to display parameters；
Wherein, the revised brightness of main pixel 110 is greater than the brightness before amendment, and the revised brightness of sub-pixel 120 is less than
Brightness before amendment, and correct the main pixel in front and back 110 and sub-pixel 120 brightness and change absolute value be less than or equal to it is default
The change absolute value of luminance difference, the coloration of amendment front and back pixel is less than or equal to default colour difference.
Specifically, the usual rectangular array shape arrangement of pixel on display panel, wherein partial pixel is main pixel 110,
Partial pixel is sub-pixel 120, and main pixel 110 and sub-pixel 120 can arrange according to certain rule, shown in Fig. 4 to show
In example, 120 cross arrangement of main pixel 110 and sub-pixel, i.e., the adjacent pixel in the upper and lower, left and right of main pixel 110 is time picture
Element 120, the adjacent pixel in the upper and lower, left and right of sub-pixel 120 is main pixel 110, to help to make entire display panel
Brightness and evenness.Certainly, in other specific examples, display panel can also be divided by different show according to visual angle
Show region, main pixel 110 and sub-pixel 120 are set in the corresponding display area in anorthopia angle, according to driving side described hereinafter
Method is driven；And in the corresponding display area in positive visual angle, main pixel and sub-pixel are not repartitioned, directly according to above-mentioned example
In driving method driving.
The isolated degree of the image of pixel reflects whether corresponding region in display picture is wisp, such as cursor etc..When
When the isolated degree of image is higher, often there is biggish difference in the display parameters between adjacent pixel, at this point, if only according to aobvious
When showing that the color parameters such as tone, the saturation degree of picture determine correction factor, it is likely that lead to the distortion for showing picture.Therefore, with
The increase of the isolated degree of image, should accordingly adjust correction factor, weaken the corrected strength of wisp image section or to small object
Body image section does not do additional correction, to mention high display quality.
Display parameters specifically include the display grayscale of each sub-pixel in main pixel 110 or sub-pixel 120, according to each sub-pixel
Display grayscale, can from which further follow that the information such as hue, saturation, intensity, the coloration of main pixel 110 or sub-pixel 120.?
In the present embodiment, main pixel 110 is with partially bright status display, and sub-pixel 120 is with partially dark status display, with the A in simulation drawing 3 respectively
Part and part B curve increase the angle of visibility of display device, reduce colour cast.Further, in order to keep display picture entirety
Brightness constancy, the brightness of the main pixel in amendment front and back 110 and sub-pixel 120 and change absolute value be less than or equal to predetermined luminance
Difference, predetermined luminance difference are the values of a very little, that is, the increased value of brightness institute of main pixel is substantially equal to sub-pixel after correcting after correcting
The value that is reduced of brightness.In order to keep display picture entirety without colour cast, the change absolute value of the coloration of amendment front and back pixel is small
In or equal to default colour difference, wherein default colour difference is the value of very little, i.e., the coloration of pixel is basically unchanged before and after amendment.
In this example it is shown that device includes display panel, display panel includes the multiple pixels being arranged in array, until
Small part pixel is main pixel 110, and at least partly pixel is sub-pixel 120；The driving method of display device the following steps are included:
Obtain the isolated degree of image of pixel；According to the isolated degree of image, the correction factor of pixel is determined；According to correction factor, pixel is determined
Display parameters；Control pixel is shown according to display parameters；Wherein, the revised brightness of main pixel 110 is greater than bright before correcting
Degree, the revised brightness of sub-pixel 120 are less than the brightness before amendment, and correct the brightness of front and back main pixel 110 and sub-pixel 120
The change absolute value of sum is poor less than or equal to predetermined luminance, and the change absolute value of the coloration of amendment front and back pixel is less than or equal to pre-
If colour difference.According to the isolated degree of the image of pixel in display picture, the display parameters of main pixel 110 and sub-pixel 120 are controlled, are made
For main pixel 110 with partially bright status display, sub-pixel 120 guarantees the whole of display device amendment front and back with partially dark status display
Body brightness and whole coloration substantially constant, it is aobvious having ensured so as to avoid the distortion of small subject image part in display picture
While the penetrance of showing device, angle of visibility is increased, reduces colour cast, improves display quality.
Wherein, pixel includes at least one sub-pixel, and step S100 includes:
Step S110, the first grayscale pixel in pixel before each sub-pixel amendment is obtained0；
Step S120, in the neighbor pixel within acquisition the first pre-determined distance adjacent with pixel before the amendment of each sub-pixel the
Two grayscale pixelm；
Step S130, the second grayscale with the first grayscale of sub-pixel corresponding in pixel of calculating neighbor pixel sub-pixel
Absolute value of the difference Δm=| pixel0-pixelm|, it is denoted as the opposite grayscale Δ of neighbor pixelm；
Step S140, opposite grayscale Δ is comparedmWith preset gray scale threshold value Δ0, and opposite grayscale Δ in accumulative neighbor pixelm
More than or equal to preset gray scale threshold value Δ0Neighbor pixel number N (Δn≥Δ0)；
Step S150, the number η of the neighbor pixel after note normalization2N(Δn≥Δ0) be pixel the isolated degree of image,
In, η2For isolated degree normalization coefficient.
As shown in fig. 6, the calculating process of isolated degree U (i, j) of the image of pixel (i, j) is as follows in a specific example:
Three neighbor pixels are respectively selected on the left and right directions of pixel (i, j), and two neighbour's pictures are respectively selected in up and down direction
Element, wherein assuming that pixel (i, j) and its neighbor pixel include red sub-pixels, green sub-pixel and indigo plant sub-pixel, and each pixel
The arrangement mode of sub-pixel is identical, then, it calculates in pixel (i, j) and surrounding 20 neighbor pixels, each sub- picture of correspondence
The grayscale absolute value of the difference of element, that is, calculate separately red sub-pixels in the red sub-pixels and 20 neighbor pixels in pixel (i, j)
Grayscale absolute value of the difference, the grayscale absolute value of the difference of green sub-pixel in the green sub-pixel and 20 neighbor pixels in pixel (i, j),
The grayscale absolute value of the difference of blue sub-pixel in blue sub-pixel and 20 neighbor pixels in pixel (i, j), obtains opposite grayscale
Δ1, Δ2..., Δ60.Further, add up in 20 neighbor pixels, opposite grayscale is greater than or equal to pre- with pixel (i, j)
If grayscale threshold value Δ0Neighbor pixel number N (Δn≥Δ0), then coordinate is isolated degree U (i, j) of image of the pixel of (i, j)
Meet U (i, j)=η2N(Δn≥Δ0), wherein η2For isolated degree normalization coefficient.It should be noted that specifically showing at other
In example, it also can choose the calculating that other neighbor pixels realize the isolated degree of image, that is, change the first pre-determined distance, herein no longer
It repeats.
Further, display parameters include main pixel sub-pixel the first data level and sub-pixel sub-pixel
Two data levels；
Step S300 includes:
Step S311, according to the grayscale of sub-pixel before the first gamma value and amendment, the first gamma level of sub-pixel is determined；
Step S312, according to the grayscale of sub-pixel before the second gamma value and amendment, the second gamma level of sub-pixel is determined；
Step S313, according to correction factor, the first gamma level and the second gamma level, main pixel sub-pixel is determined
First data level；
Step S314, according to the grayscale of sub-pixel before third gamma value and amendment, the third gamma level of sub-pixel is determined；
Step S315, according to correction factor, the first gamma level and third gamma level, sub-pixel sub-pixel is determined
Second data level；
Wherein, the second gamma value and third gamma value mix corresponding gamma response and are equivalent to the corresponding gal of the first gamma value
Horse response, and the second gamma value is not equal to third gamma value.
In display panel, the corresponding data line electrical connection of sub-pixel drives in the data level signal of data line
Under, the liquid crystal in sub-pixel deflects, and causes light transmittance to change, to show different grayscale.However, due to liquid
The influence of brilliant photoelectric characteristic, if directly determining the data level signal of driving sub-pixel according to original picture signal, then counting
There is the response of nonlinear gamma between the grayscale according to level signal and finally shown.Therefore, it during driving, needs to original
The picture signal of beginning carries out inverse gamma correction, the data level signal after being corrected, to compensate the non-linear spy of display device
Property, realize undistorted display.As shown in fig. 7, being filled when carrying out inverse gamma correction to original picture signal according to display
The gamma set responds corresponding gamma value and determines correction gamma value during inverse gamma correction, specifically, correction gamma value and
It is usually in reciprocal relation between gamma value.Gamma value reflects the characteristic of display device itself.Wherein, the first gamma value γ 1 is right
It should be 2.2~2.5 in normal display state, typical first gamma value γ 1, common first gamma value γ 1 is 2.2；Second
Gamma value γ 2, which corresponds to, shows partially bright display state, and the second gamma value γ 2 is less than the first gamma value γ 1；Third gamma value
γ 3 corresponds to the partially dark display state that shows, and third gamma value γ 3 is greater than the first gamma value γ 1.Therefore, according to the first gal
Grayscale before horse value and amendment, can be calculated the first gamma level under sub-pixel normal display state；According to the second gamma
Grayscale before value and amendment, can be calculated the second gamma level under the partially bright display state of sub-pixel；According to third gamma value
With the grayscale before amendment, sub-pixel can be calculated and show slinkingly the third gamma level shown under state partially.Further, in order to avoid
The distortion of display, the second gamma value γ 2 and third gamma value γ 3 mix corresponding gamma response and are equivalent to the first gamma value γ 1
Corresponding gamma response, i.e. the second gamma value γ 2 and opposite first gamma value γ 1 of third gamma value γ 3 are symmetrical.It is by amendment
Number controls the difference of the display grayscale between the sub-pixel of main pixel 110 and the sub-pixel of sub-pixel 120, to improve display device
Angle of visibility.In general, the deflection angle of liquid crystal is related with the grayscale before amendment, with the increase of liquid crystal deflection angle, in anorthopia
Colour cast under angle is more serious, at this point, in order to ensure angle of visibility, by correction factor increase main pixel 110 and sub-pixel 120 it
Between display grayscale difference, that is, increase the second gamma level in the first data level of main pixel 110 and third gamma electricity
The weight in the second data level of sub-pixel 120 is equalled, while reducing the first gamma level in the first data of main pixel 110
Weight in second data level of level and sub-pixel 120, to improve angle of visibility.But when in high frequency imaging region
When, it in order to avoid the distortion of image, should suitably reduce correction factor, that is, reduce the second gamma level the first of main pixel 110
The weight of data level and third gamma level in the second data level of sub-pixel 120, while increasing the first gamma electricity
The weight in the first data level of main pixel 110 and the second data level of sub-pixel 120 is equalled, to keep picture
Correct display.
Further, adjusted coefficient K, the first gamma level U1, the second gamma level U2With the first data level Ud1Between
Meet Ud1=(1-K) * U1+K*U2；Adjusted coefficient K, the first gamma level U1, third gamma level U3With the second data level Ud2
Between meet Ud2=(1-K) * U1+K*U3；Wherein, adjusted coefficient K meets 0≤K≤1.With the increase of adjusted coefficient K, second
Gamma level U2In the first data level Ud1In shared weight increase, third gamma level U3In the second data level Ud2Middle institute
The weight accounted for increases, the first gamma level U1In the first data level Ud1With the second data level Ud2In shared weight accordingly subtract
It is small, hereinafter by by taking the calculated relationship between above-mentioned adjusted coefficient K and each level as an example, to the technical solution of the application into one
Step illustrates.According to other calculated relationships, those skilled in the art can adjust accordingly, and details are not described herein.
In a display device, enabling according to the determining isolated degree correction factor of the isolated degree of the image of pixel is KU, according to pixel
Picture frequency determine frequency correction factor be KT, it is K according to the tonal correction coefficient that the tone of pixel determinesH, according to pixel
Saturation degree determine saturation degree correction factor be KS, then the adjusted coefficient K of pixel meets K=KU·KT·KH·KS, and 0≤KU
≤ 1,0≤KT≤ 1,0≤KH≤ 1,0≤KS≤1.In a relatively simple example, only consider that the isolated degree of image is to amendment
Several influence, at this point, taking KT=1, KS=1, KH=1, then K=KU, and according to KUDetermine correction factor.Certainly, aobvious in order to improve
Show quality, can also further consider at least one of picture frequency, tone and saturation degree, calculate separately out corresponding frequency
At least one of correction factor, tonal correction coefficient and saturation degree correction factor, and substitute into above-mentioned formula and obtain amendment system
Number K.
In another embodiment, as shown in figure 8, when the isolated degree U of the image of pixel is less than or equal to the first default isolated degree
When, the isolated degree adjusted coefficient K of pixelUMeet KU=1；It is greater than the first default isolated degree, and picture when the image of pixel isolates degree U
When the isolated degree of the image of element presets isolated spend less than or equal to second, the isolated degree adjusted coefficient K of pixelUMeet KU=aU+b；When
When the isolated degree U of the image of pixel presets isolated spend greater than second, the isolated degree adjusted coefficient K of pixelUMeet KU=0；Wherein,
One default isolated degree U1Isolated degree U default less than or equal to second2, the first coefficient a meets a<0, and the second coefficient b meets b>0.Figure
As isolated degree is bigger, show to show corresponding position shows to be the wisps such as cursor in picture at this time, in order to avoid image fault,
Correction factor should accordingly be reduced, to reduce the difference of the display brightness between adjacent main pixel and sub-pixel, so as to improve display
Quality.
In another embodiment, it is also contemplated that the picture frequency of pixel is adjusted correction factor.Wherein, image
Frequency often reflects the edge feature of display picture, for high frequency picture higher for picture frequency, adjacent pixel
There are biggish difference for display parameters, are easy to appear the distortion of display.As shown in figure 9, the picture frequency T when pixel is less than or waits
When the first predeterminated frequency, the frequency adjusted coefficient K of pixelTMeet KT=1；When the picture frequency T of pixel is greater than the first default frequency
Rate, and the picture frequency T of pixel be less than or equal to the second predeterminated frequency when, the adjusted coefficient K of pixelTMeet KT=cT+d；Work as picture
When the picture frequency T of element is greater than the second predeterminated frequency, the adjusted coefficient K of pixelTMeet KT=0；Wherein, the first predeterminated frequency T1
Less than or equal to the second predeterminated frequency T2, third coefficient c meets c<0, and the 4th coefficient d meets d>0.In a display device, with
The increase of the picture frequency of pixel, reduces the correction factor of the pixel, that is, reduces the aobvious of adjacent main pixel and sub-pixel
Show luminance difference, to ensure the normal display of high frequency imaging.
The picture frequency T of pixel meets T=η1max(Δn), η1For frequency normalization coefficient, max (Δn) it is adjacent second
With respect to the maximum value of grayscale in neighbor pixel within pre-determined distance, as shown in figure 9, in another specific example, the figure of pixel
The calculating process of picture frequency rate T (i, j) is as follows:
Pixel (i, j) has eight adjacent neighbor pixels, and in nine pixels in Fig. 9, each pixel includes red
Sub-pixel, green sub-pixel and blue three sub-pixel of sub-pixel (not shown), in each pixel, the arrangement mode of sub-pixel
It is generally also identical.Grayscale absolute value of the difference in eight neighbor pixels of pixel (i, j), before each corresponding sub-pixel amendment
Are as follows:
Δ1=| pixel (i, j, R)-pixel (i-1, j-1, R) |,
Δ2=| pixel (i, j, R)-pixel (i-1, j, R) |,
Δ3=| pixel (i, j, R)-pixel (i-1, j+1, R) |,
Δ4=| pixel (i, j, R)-pixel (i, j-1, R) |,
Δ5=| pixel (i, j, R)-pixel (i, j+1, R) |,
Δ6=| pixel (i, j, R)-pixel (i+1, j-1, R) |,
Δ7=| pixel (i, j, R)-pixel (i+1, j, R) |,
Δ8=| pixel (i, j, R)-pixel (i+1, j+1, R) |,
Δ9=| pixel (i, j, G)-pixel (i-1, j-1, G) |,
Δ10=| pixel (i, j, G)-pixel (i-1, j, G) |,
Δ11=| pixel (i, j, G)-pixel (i-1, j+1, G) |,
Δ12=| pixel (i, j, G)-pixel (i, j-1, G) |,
Δ13=| pixel (i, j, G)-pixel (i, j+1, G) |,
Δ14=| pixel (i, j, G)-pixel (i+1, j-1, G) |,
Δ15=| pixel (i, j, G)-pixel (i+1, j, G) |,
Δ16=| pixel (i, j, G)-pixel (i+1, j+1, G) |,
Δ17=| pixel (i, j, B)-pixel (i-1, j-1, B) |,
Δ18=| pixel (i, j, B)-pixel (i-1, j, B) |,
Δ19=| pixel (i, j, B)-pixel (i-1, j+1, B) |,
Δ20=| pixel (i, j, B)-pixel (i, j-1, B) |,
Δ21=| pixel (i, j, B)-pixel (i, j+1, B) |,
Δ22=| pixel (i, j, B)-pixel (i+1, j-1, B) |,
Δ23=| pixel (i, j, B)-pixel (i+1, j, B) |,
Δ24=| pixel (i, j, B)-pixel (i+1, j+1, B) |,
Wherein, i, i+1, i-1 indicate that the abscissa of pixel, j, j+1, j-1 indicate that the ordinate of pixel, R, G, B distinguish table
Show red sub-pixels, green sub-pixel and the blue sub-pixel in pixel, pixel (i, j, R), pixel (i, j, G), pixel (i, j, B)
It is equivalent to pixel0(since there are a variety of sub-pixels, each sub-pixel has corresponding pixel0), it is other to correspond to
pixelm, coordinate is that the picture frequency T (i, j) of the pixel of (i, j) meets T (i, j)=η1max(Δ1,Δ2,…,Δ24), η1For
Frequency normalization coefficient.It should be noted that also can choose other neighbor pixels in other specific examples and realize image
The calculating of frequency changes the second pre-determined distance, details are not described herein.
In the another embodiment of the application, correction factor is adjusted also according to the color parameter of pixel, wherein color parameter
At least one of tone and saturation degree including pixel.For the tone of pixel, the tone before pixel correction is in
When in default tone range, the tonal correction COEFFICIENT K of pixelHMeet KH=KH1；Tone before pixel correction is in default color
When adjusting outside range, the tonal correction COEFFICIENT K of pixelHMeet KH=KH2；Wherein, the minimum tone for presetting tone range is greater than 8 °,
The maximum tone of default tone range is less than or equal to 24 °, and KH1>KH2.Tonal correction coefficient is according to the color before pixel correction
Locating range is adjusted to determine.For particularly showing object, such as face, plant, animal etc., would correspond to certain
Default tone range.And above-mentioned special display object is that user is easiest to the part being concerned about in entire display picture, therefore,
Processing is optimized to these display objects, helps to improve user experience.By taking this display object of face as an example, face includes
White race face, yellow race's face and black race's face, correspond respectively to different tones.Color is being determined according to the tone before pixel correction
When adjusting corrected parameter, by tone and the tone corresponding to each ethnic group face prestored of comparison pixels, that is, tone range is preset,
When the tone before pixel correction is within default tone range, at least part of the corresponding display face of the pixel is determined,
By increasing tonal correction coefficient, to improve display effect.For the saturation degree of pixel, as shown in figure 11, when pixel is repaired
When saturation degree S before just is less than or equal to the first default saturation degree, the saturation degree adjusted coefficient K of pixelSMeet KS=0；Work as pixel
Saturation degree S before amendment is greater than the first default saturation degree, and the saturation degree before pixel correction is less than or equal to the second default saturation
When spending, the saturation degree adjusted coefficient K of pixelSMeet KS=eS+f；Saturation degree S before pixel correction is greater than the second default saturation
When spending, the saturation degree adjusted coefficient K of pixelSMeet KS=1；Wherein, the first default saturation degree S1It is default less than or equal to second full
With degree S2, the 5th coefficient e meets e > 0, and the 6th coefficient f meets f≤0.In a display device, with the saturation degree before pixel correction
Increase, the minimum deflection degree of liquid crystal increases in the pixel, it is possible to create colour cast also increase, correspondingly, more by setting
Big saturation degree correction factor, raising subtract the corrected strength of the display parameters of main pixel and sub-pixel to increase angle of visibility
Small colour cast.
In above-described embodiment of the application, pixel includes red sub-pixels, green sub-pixel and blue sub-pixel；
Step S300 includes:
Step S321, according to the coloration before pixel correction, the ratio of the grayscale of red sub-pixels and the grayscale of blue sub-pixel is adjusted
Example, so that the change absolute value of the coloration of amendment front and back pixel is less than or equal to default colour difference.
It is convenient using rgb color model comparision in the display grayscale for determining each sub-pixel.And in rgb color mode,
To coloration play influence be wherein red (R) and blue (B) ratio, it is therefore, red by adjusting when adjusting the coloration of pixel
The ratio of the grayscale of sub-pixel and blue sub-pixel is realized.Specifically, make the grayscale of revised red sub-pixels and blue sub-pixel
Ratio is substantially equal to the ratio of the grayscale of the red sub-pixels before correcting and blue sub-pixel, i.e., when revised coloration is colder, increases
The ratio of the grayscale of the relatively blue sub-pixel of the grayscale of big red sub-pixels；When revised coloration is partially warm, reduce red sub-pixels
The ratio of the grayscale of the relatively blue sub-pixel of grayscale, to keep the coloration of entire display panel constant.This regulative mode calculates
Simply, it and by the relationship between the grayscale of restriction red sub-pixels and the grayscale of blue sub-pixel, can also avoid to the bright of pixel
Degree causes related influence, to improve adjusting efficiency.In actual adjustment process, due to each sub-pixel grayscale can value
Be it is discrete, therefore, selection can be realized the value closest to the grayscale of ratio, to minimize the variation of coloration.
Certainly, step S300 can also include:
Step S331, the revised brightness of brightness and sub-pixel according to correction factor, after determining main pixel correction；
Step S332, brightness and maximum brightness after main pixel correction are compared；
Step S333, when the brightness after main pixel correction is greater than maximum brightness, the brightness after updating main pixel correction is
Maximum brightness；
Step S334, according to the brightness after updated main pixel correction, the revised brightness of sub-pixel is updated；
Step S335, the revised brightness of sub-pixel and minimum brightness are compared；
Step S336, when the revised brightness of sub-pixel is less than minimum brightness, updating the revised brightness of sub-pixel is
Minimum brightness；
Step S337, the brightness according to the revised brightness of updated sub-pixel, after updating main pixel correction.
In view of during obtaining the display parameters of main pixel and sub-pixel, in fact it could happen that obtained according to theoretical calculation
To the brightness of main pixel be more than maximum brightness that display device can be shown, then, can not actually be counted according to theory
The result of calculation controls the display parameters of main pixel and sub-pixel.At this point, the brightness after main pixel correction brightness is updated to most
Big brightness, also, the overall brightness substantially constant in order to ensure display device, according to bright after updated main pixel correction
Degree updates the revised brightness of sub-pixel, so that the revised brightness of sub-pixel is with respect to the value base that the brightness before its amendment reduces
This is equal to the revised brightness of updated main pixel with respect to the increased value of brightness before its amendment.Likewise, according to theory
Calculating the revised brightness of sub-pixel got may also be lower than the minimum brightness that display device can be shown, at this point, will be secondary
As revised brightness is updated to the minimum brightness of display device, also, in order to ensure the overall brightness of display device substantially not
Become, according to the revised brightness of sub-pixel after update, brightness after updating main pixel correction, so that main pixel is repaired after updating
Before brightness is substantially equal to its opposite amendment of the revised brightness of sub-pixel after updating with respect to the increased value of brightness before its amendment after just
Brightness reduce value.Wherein, step S332 is true to step S334 entirety and step S335 to having no between step S337 entirety
Fixed ordinal relation, it can first main pixel is modified, first sub-pixel can also be modified.
The application also proposes a kind of display device, and as shown in Fig. 4 and Figure 12, display device includes display panel and driving group
Part, display panel include the multiple pixels being arranged in array, and at least partly pixel is main pixel 110, and at least partly pixel is secondary
Pixel 120；Driving assembly is electrically connected with display panel, and driving assembly includes that the isolated degree of image obtains module 210, correction factor mould
Block 220, display parameters module 230 and display control module 240, wherein the isolated degree of image obtains module 210 to obtain pixel
The isolated degree of image；The isolated degree of correction factor module 220 and image obtains module 210 and is electrically connected, correction factor module 220 to
According to the isolated degree of image, the correction factor of pixel is determined；Display parameters module 230 is electrically connected with correction factor module 220, display
Parameter module 230 is to determine the display parameters of pixel according to correction factor；Display control module 240 and display parameters module
230 electrical connections, display control module 240 are shown to control pixel according to display parameters；Wherein, main pixel 110 is revised
Brightness is greater than the brightness before amendment, and the revised brightness of sub-pixel 120 is less than the brightness before amendment, and corrects the main pixel in front and back
110 with the brightness of sub-pixel 120 and change absolute value be less than or equal to that predetermined luminance is poor, the change of the coloration of amendment front and back pixel
Change absolute value and is less than or equal to default colour difference.
Further, as shown in figure 13, pixel includes at least one sub-pixel, and display parameters include main pixel sub-pixel
The first data level and sub-pixel sub-pixel the second data level；Display parameters module 230 includes the first gamma correction unit
231, the second gamma correction unit 232, third gamma correction unit 233, selecting unit 234 and data level-cell 235, the first gamma correction unit
231, to the grayscale according to sub-pixel before the first gamma value and amendment, determine the first gamma level of sub-pixel；Second gamma is single
Member 232 determines the second gamma level of sub-pixel to the grayscale according to sub-pixel before the second gamma value and amendment；Third gamma
Unit 233 determines the third gamma level of sub-pixel to the grayscale according to sub-pixel before third gamma value and amendment；Selection is single
Member 234 be electrically connected with the second gamma correction unit 232 and third gamma correction unit 233, when pixel is main pixel, to select acquisition the
Two gamma level, when pixel is sub-pixel, selection obtains third gamma level；Data level unit 235 and correction factor mould
Block 220, the first gamma correction unit 231 and selecting unit 234 are electrically connected, to according to correction factor, the first gamma level and second
Gamma level determines the first data level of main pixel sub-pixel；Or according to correction factor, the first gamma level and third gal
Horse level determines the second data level of sub-pixel sub-pixel；Wherein, the second gamma value and the mixing of third gamma value are corresponding
Gamma response is equivalent to the corresponding gamma response of the first gamma value, and the second gamma value is not equal to third gamma value.First gamma
Unit 231, the second gamma correction unit 232 are similar with the framework of third gamma correction unit 233, with the signal original according to display picture
Obtain the gamma level after gamma correction.Correction factor module 220 may include comparison circuit, counting circuit etc., to obtain
Take corresponding correction factor.Selecting unit 234 includes selection circuit, to be respectively that main pixel and sub-pixel select corresponding gamma
Level.In a specific example, when the value of adjusted coefficient K is only 0 or 1, data level unit 234 includes selection circuit,
To select corresponding gamma level as the first data level or the second data level.The structure of display device and wherein signal
Circulation can refer to the elaboration in each embodiment of driving method of the application display device, and details are not described herein.
Described is only preferred embodiment of the present application, is not intended to limit the scope of the patents of the application, all in the application
Inventive concept under, using equivalent structure transformation made by present specification and accompanying drawing content, or directly/be used in it indirectly
He is included in the scope of patent protection of the application relevant technical field.
Claims (10)
1. a kind of driving method of display device, which is characterized in that display device includes display panel, and the display panel includes
The multiple pixels being arranged in array, at least partly described pixel are main pixel, and at least partly described pixel is sub-pixel；
The driving method of the display device the following steps are included:
Obtain the isolated degree of image of the pixel；
According to the isolated degree of described image, the correction factor of the pixel is determined；
According to the correction factor, the display parameters of the pixel are determined；
The pixel is controlled to show according to the display parameters；
Wherein, the brightness after the main pixel correction is greater than the brightness before amendment, and the revised brightness of sub-pixel, which is less than, repairs
Brightness before just, and correct the front and back main pixel and the sub-pixel brightness and change absolute value be less than or equal to it is default
Luminance difference, the change absolute value of the coloration of the amendment front and back pixel are less than or equal to default colour difference.
2. the driving method of display device as described in claim 1, which is characterized in that the pixel includes at least one sub- picture
Element；
The image for obtaining the pixel isolates the step of spending and includes:
Obtain the first grayscale pixel in the pixel before each sub-pixel amendment0；
Obtain the second grayscale in the neighbor pixel within the first pre-determined distance adjacent with the pixel before each sub-pixel amendment
pixelm；
Calculate the second grayscale of the neighbor pixel sub-pixel and the difference of the first grayscale of corresponding sub-pixel in the pixel
Absolute value deltam=| pixel0-pixelm|, it is denoted as the opposite grayscale Δ of the neighbor pixelm；
Compare the opposite grayscale ΔmWith preset gray scale threshold value Δ0, and add up opposite grayscale Δ described in the neighbor pixelmGreatly
In or equal to the preset gray scale threshold value Δ0Neighbor pixel number N (Δn≥Δ0)；
The number η of neighbor pixel after note normalization2N(Δn≥Δ0) be the pixel the isolated degree of image, wherein η2It is isolated
Spend normalization coefficient.
3. the driving method of display device as claimed in claim 2, which is characterized in that the display parameters include the main picture
Second data level of the first data level of plain sub-pixel and the sub-pixel sub-pixel；
According to the correction factor, the step of determining the display parameters of the pixel, includes:
According to the grayscale of the sub-pixel before the first gamma value and amendment, the first gamma level of the sub-pixel is determined；
According to the grayscale of the sub-pixel before the second gamma value and amendment, the second gamma level of the sub-pixel is determined；
According to the correction factor, the first gamma level and the second gamma level, the main pixel neutron picture is determined
First data level of element；
According to the grayscale of the sub-pixel before third gamma value and amendment, the third gamma level of the sub-pixel is determined；
According to the correction factor, the first gamma level and the third gamma level, the sub-pixel neutron picture is determined
Second data level of element；
Wherein, second gamma value and the third gamma value mix corresponding gamma response and are equivalent to first gamma value
Corresponding gamma response, and second gamma value is not equal to the third gamma value.
4. the driving method of display device as claimed in claim 3, which is characterized in that the adjusted coefficient K, first gal
Horse level U1, the second gamma level U2With the first data level Ud1Between meet Ud1=(1-K) * U1+K*U2；
The adjusted coefficient K, the first gamma level U1, the third gamma level U3With the second data level Ud2It
Between meet Ud2=(1-K) * U1+K*U3；
Wherein, the adjusted coefficient K meets 0≤K≤1.
5. the driving method of display device as claimed in claim 4, which is characterized in that the adjusted coefficient K of the pixel meets K
=KU·KT·KH·KS；
Wherein, KUFor the isolated degree correction factor determining according to the isolated degree of the image of the pixel, KTFor according to the figure of the pixel
The frequency correction factor that picture frequency rate determines, KHFor the tonal correction coefficient determined according to the tone of the pixel, KSFor according to
The saturation degree correction factor that the saturation degree of pixel determines, and 0≤KU≤ 1,0≤KT≤ 1,0≤KH≤ 1,0≤KS≤1。
6. the driving method of display device as claimed in claim 5, which is characterized in that when the image of the pixel isolates degree U
When presetting isolated spend less than or equal to first, the isolated degree adjusted coefficient K of the pixelUMeet KU=1；
It is greater than the described first default isolated degree when the image of the pixel isolates degree U, and the isolated degree of image of the pixel is less than
Or when presetting isolated spend equal to second, the isolated degree adjusted coefficient K of the pixelUMeet KU=aU+b；
When the isolated degree U of the image of the pixel, which is greater than described second, presets isolated spend, the isolated degree adjusted coefficient K of the pixelU
Meet KU=0；
Wherein, the described first default isolated degree is less than or equal to the described second default isolated degree, and the first coefficient a meets a < 0, and second
Coefficient b meets b > 0.
7. the driving method of display device as claimed in claim 5, which is characterized in that when the picture frequency T of the pixel is small
When the first predeterminated frequency, the frequency adjusted coefficient K of the pixelTMeet KT=1；
When the picture frequency T of the pixel is greater than first predeterminated frequency, and the picture frequency T of the pixel is less than or equal to
When the second predeterminated frequency, the adjusted coefficient K of the pixelTMeet KT=cT+d；
When the picture frequency T of the pixel is greater than second predeterminated frequency, the adjusted coefficient K of the pixelTMeet KT=0；
Wherein, the picture frequency T of the pixel meets T=η1max(Δn), η1For frequency normalization coefficient, max (Δn) it is adjacent
With respect to the maximum value of grayscale in neighbor pixel within second pre-determined distance, first predeterminated frequency is less than or equal to described the
Two predeterminated frequencies, third coefficient c meet c<0, and the 4th coefficient d meets d>0.
8. the driving method of display device as claimed in claim 5, which is characterized in that at the tone before the pixel correction
When in default tone range, the tonal correction COEFFICIENT K of the pixelHMeet KH=KH1；
When the tone before the pixel correction is in outside default tone range, the tonal correction COEFFICIENT K of the pixelHMeet KH
=KH2；
Wherein, the minimum tone of the default tone range is greater than 8 °, and the maximum tone of the default tone range is less than or waits
In 24 °, and KH1>KH2；
When saturation degree S before the pixel correction is less than or equal to the first default saturation degree, the saturation degree amendment of the pixel
COEFFICIENT KSMeet KS=0；
Saturation degree S before the pixel correction is greater than the described first default saturation degree, and the saturation degree before the pixel correction
When less than or equal to the second default saturation degree, the saturation degree adjusted coefficient K of the pixelSMeet KS=eS+f；
When saturation degree S before the pixel correction is greater than the second default saturation degree, the saturation degree of the pixel corrects system
Number KSMeet KS=1；
Wherein, the described first default saturation degree is less than or equal to the described second default saturation degree, and the 5th coefficient e meets e > 0, and the 6th
Coefficient f meets f≤0.
9. the driving method of display device as described in claim 1, which is characterized in that the pixel includes red sub-pixels, green
Sub-pixel and blue sub-pixel；
According to the correction factor, determine that the display parameters step of the pixel includes:
According to the coloration before the pixel correction, the ratio of the grayscale of the red sub-pixels and the grayscale of the blue sub-pixel is adjusted
Example, so that the change absolute value of the coloration of the amendment front and back pixel is less than or equal to default colour difference；And/or
Brightness and the revised brightness of the sub-pixel according to the correction factor, after determining the main pixel correction；
Brightness and maximum brightness after comparing the main pixel correction；
When brightness after the main pixel correction is greater than the maximum brightness, the brightness after updating the main pixel correction is institute
State maximum brightness；
According to the brightness after the updated main pixel correction, the revised brightness of the sub-pixel is updated；
Compare the revised brightness of the sub-pixel and minimum brightness；
When the revised brightness of the sub-pixel is less than the minimum brightness, the revised brightness of the sub-pixel is updated for institute
State minimum brightness；
Brightness according to the updated revised brightness of sub-pixel, after updating the main pixel correction.
10. a kind of display device, which is characterized in that the display device includes:
Display panel, the display panel include the multiple pixels being arranged in array, and at least partly described pixel is main pixel, until
Pixel described in small part is sub-pixel；
Driving assembly, the driving component are electrically connected with the display panel, and the driving component includes that the isolated degree of image obtains
Module, correction factor module, display parameters module and display control module, wherein the isolated degree of described image obtain module to
Obtain the picture frequency of the pixel；The correction factor module is electrically connected with described image frequency acquisition module, the amendment
Coefficient module is to determine the correction factor of the pixel according to described image frequency；The display parameters module is repaired with described
The electrical connection of positive coefficient module, the display parameters module is to determine the display parameters of the pixel according to the correction factor；
The display control module is electrically connected with the display parameters module, the display control module to control the pixel according to
The display parameters are shown；
Wherein, the brightness after the main pixel correction is greater than the brightness before amendment, and the revised brightness of sub-pixel, which is less than, repairs
Brightness before just, and correct the front and back main pixel and the sub-pixel brightness and change absolute value be less than or equal to it is default
Luminance difference, the change absolute value of the coloration of the amendment front and back pixel are less than or equal to default colour difference.
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|---|---|---|---|
| CN201811176302.9A CN109166549B (en) | 2018-10-10 | 2018-10-10 | Display device driving method and display device |
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