CN109712578A - Display methods and display device - Google Patents
Display methods and display device Download PDFInfo
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- CN109712578A CN109712578A CN201910153297.8A CN201910153297A CN109712578A CN 109712578 A CN109712578 A CN 109712578A CN 201910153297 A CN201910153297 A CN 201910153297A CN 109712578 A CN109712578 A CN 109712578A
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Abstract
The embodiment of the invention discloses a kind of display methods and display device, which includes: acquisition image to be displayed；The profile bright line of image to be displayed is extracted, and obtains the grayscale peak value Y1 of profile bright line；Judge whether grayscale peak value Y1 is less than preset gray scale value Y0；If so, increase the grayscale peak value Y1, and increase the grayscale value of other sub-pixels of profile bright line in display panel；And reduce the output brightness of backlight subarea corresponding to the profile bright line.Display methods provided in an embodiment of the present invention, can be improved and display contrast, while can reduce halation.
Description
Technical field
The present invention relates to display technology more particularly to a kind of display methods and display device.
Background technique
The span scope that dynamic range (Dynamic Range, DR) can change referring broadly to a certain variation affairs, it is right
In still image or video frame, dynamic range is the most dark-coloured range for being transferred to most light tone, and light and shade variation is real within this range
It is existing；The range is bigger, and the light and shade variation level of image is more, and display device is stronger to the descriptive power of image detail.Tradition
Liquid crystal display device (Liquid Crystal Display, LCD) using global backlight, dynamic range is about 2 quantity
Grade, and there is also more serious light leakage phenomenas for global backlight, this is one of the reason of limitation LCD is displayed contrast.
Currently, to solve this problem, region backlight dynamic adjustment technique is suggested, region backlight dynamic adjustment technique is
Backlight is divided into multiple independent partitions, the brightness of the backlight of each subregion can be adjusted in real time according to the bright dark field of image to be displayed,
Thus, it can be achieved that the high dynamic range (High Dynamic Range, HDR) of LCD is shown.But due to backlight subarea quantity
Limitation, existing HDR show cannot achieve Pixel-level backlight illumination control, thus lead to the display pair of image border profile
It is more lower than degree, and halation phenomenon is more serious.
Summary of the invention
The present invention provides a kind of display methods and display device, is displayed contrast with improving, while reducing halation.
In a first aspect, the embodiment of the invention provides a kind of display methods, which includes:
Obtain image to be displayed；
The profile bright line of the image to be displayed is extracted, and obtains the grayscale peak value Y1 of the profile bright line；
Judge whether the grayscale peak value Y1 is less than preset gray scale value Y0；
If so, increasing the grayscale peak value Y1, and increase other sub- pictures of the profile bright line in display panel
The grayscale value of element；And reduce the output brightness of backlight subarea corresponding to the profile bright line.
Second aspect, the embodiment of the invention also provides a kind of display device, the display device is for executing first aspect
The display methods of offer, the display device include:
Image receiver module, for obtaining image to be displayed；
Profile extraction module for extracting the profile bright line of the image to be displayed, and obtains the ash of the profile bright line
Rank peak value Y1；
Condition judgment module, for judging whether the grayscale peak value Y1 is less than preset gray scale value Y0；
First output data determining module is used for when the grayscale peak value Y1 is less than preset gray scale value Y0, described in increase
The grayscale value of other sub-pixels of the profile bright line in grayscale peak value Y1, and increase display panel；And reduce the wheel
The output brightness of backlight subarea corresponding to wide bright line.
Display methods provided in an embodiment of the present invention, the grayscale peak value Y1 by the way that profile bright line is arranged in are less than default ash
When rank value Y0, increase the ash of other sub-pixels of the profile bright line in the grayscale peak value Y1, and increase display panel
Rank value；And the output brightness of backlight subarea corresponding to the profile bright line is reduced, it thus can be in the wheel for ensuring image to be displayed
Under the premise of the display brightness of the presentation of wide bright line and brightness to be shown are consistent, that is, it is conducive to ensuring to show distortionless premise
Under, the output brightness of backlight subarea corresponding to the profile bright line is reduced, shows that this is to be shown to advantageously reduce and be not used in
The brightness of the sub-pixel of image, for the sub-pixel of display and the brightness ratio for the sub-pixel for being not used in display increase, in turn
It improves and displays contrast.Simultaneously as the output brightness of backlight subarea reduces, be conducive to improve since backlight illumination is higher
When light leakage caused by halation phenomenon.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of display methods provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another display methods provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of another display methods provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of another display methods provided in an embodiment of the present invention；
Fig. 5 is a kind of display effect comparison diagram of display methods and existing display methods provided in an embodiment of the present invention；
Fig. 6 is the display effect comparison diagram of another display methods and existing display methods provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another display device provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to
Convenient for describing, only the parts related to the present invention are shown rather than entire infrastructure in attached drawing.
Fig. 1 is a kind of flow diagram of display methods provided in an embodiment of the present invention.Referring to Fig.1, the display methods packet
It includes:
S010 obtains image to be displayed.
Wherein, image to be displayed is that display device needs image to be shown.
Illustratively, image to be displayed can be a tableaux, can also be the frame picture in a dynamic scene.To aobvious
The image data of diagram picture may include image to be displayed display sub-pixel color and its corresponding grayscale value, may also include
Skilled person will appreciate that other kinds of image data.
S020, extracts the profile bright line of image to be displayed, and obtains the grayscale peak value Y1 of profile bright line.
Wherein, profile bright line is alternatively referred to as bright line profile, it will be appreciated that for the brighter contour line of brightness.Contour line refer to
The outer edge boundary line of individual, group or scenery in display image, refers to the boundary between an object and another object
Line of demarcation between line and object and background.On this basis, when the brightness of the contour line is brighter, the contour line be to
Show the profile bright line of image.Those skilled in the art are it is understood that " brightness is brighter " is that bright show slinkingly shows when showing in picture
Relative luminance it is brighter, be not only restricted to the size of absolute brightness value.
Illustratively, when image to be displayed includes square block, it is rectangular that the profile bright line of the square block can form this for encirclement
The sideline of block；When image to be displayed includes round, which can form the circular sideline to surround；To aobvious
When diagram picture includes lines, the profile bright line of the lines can be the lines itself.
It should be noted that it is above-mentioned only by taking simple graph as an example, illustratively illustrate profile bright line；When figure to be shown
When as including complex figure or complicated picture, profile bright line according to the display device in the algorithm of plug-in obtain, the present invention is real
Example is applied not limit the concrete shape of profile bright line.
Illustratively, the algorithm of plug-in may be based on the corresponding brightness square of sub-pixel matrix in above-mentioned display device
Battle array carries out convolution algorithm with operator matrix and obtains matrix of consequence, and determines a son based on the value of each element in the matrix of consequence
Whether pixel belongs to the profile of image to be displayed.All profile bright line sub-pixels for belonging to image to be displayed are calculated
Form the profile bright line of image to be displayed.
Wherein, grayscale peak value Y1 is the grayscale value for the sub-pixel that brightness to be shown is most bright in profile bright line.
Illustratively, each sub-pixel in profile bright line respectively corresponds respective grayscale value, and grayscale value is bigger, corresponding
The display brightness of sub-pixel is brighter.By the way that the corresponding grayscale value of each sub-pixel to be compared, the corresponding ash of each sub-pixel is obtained
Maximum gray value in rank value, as the grayscale peak value Y1 of profile bright line.
Illustratively, the grayscale value of each sub-pixel in the profile bright line of image to be displayed be respectively 125,150,189,
213 and 215, then grayscale peak value Y1 is 215.
S030, judges whether grayscale peak value Y1 is less than preset gray scale value Y0.
Wherein, preset gray scale value Y0 is the grayscale value of storage in a display device, and preset gray scale value Y0 can be pre- for one
The fixed gray level value first stored, the variable grayscale value that can also change for that can show demand according to the image quality of image to be displayed.
The corresponding display brightness of preset gray scale value Y0 is brighter, in order to improve the increased of grayscale value in subsequent step
The feasibility of operation.
Illustratively, when the corresponding grayscale value of the displayable most bright brightness of display device is 255, the preset gray scale
The value of value Y0 can be 250 or 245 or other are equal to or less than 255 grayscale value, can be shown according to the image quality of image to be displayed
Demand setting, the embodiment of the present invention are not construed as limiting this.
If the determination result is YES (Y) can then increase grayscale peak value Y0, i.e. execution S040.
S040 increases the grayscale of other sub-pixels of the profile bright line in grayscale peak value Y1, and increase display panel
Value；And reduce the output brightness of backlight subarea corresponding to profile bright line.
Wherein, the display brightness of display device is mainly by the defeated of the grayscale value of display panel sub-pixel and backlight subarea
Brightness decision out, while the output brightness of backlight subarea depends on the output brightness of backlight subarea.In general, the electricity of backlight subarea
Stream, the brightness of backlight subarea and display device display brightness be it is corresponding, the grayscale value of display panel sub-pixel with
The display brightness of display device is corresponding.Those skilled in the art it is understood that under the influence of not considering other factors,
The output electric current of backlight subarea is bigger, and the output brighter display of backlight subarea is conducive to make the display brightness of display device to get over
It is bright；The grayscale value of display panel sub-pixel is higher, and the display brightness of display device is brighter.
In the step, to realize the output brightness for reducing backlight subarea, the output electric current of backlight subarea can be reduced,；Together
When, the grayscale value of the sub-pixel by increasing profile bright line is conducive to the display brightness for improving display device；On comprehensive consideration
Two factors (i.e. the output brightness of the grayscale value of sub-pixel and backlight subarea) for influencing the display brightness of display device are stated, it can
Realize ensure display device actual displayed go out image and image to be displayed it is consistent under the premise of, i.e., ensure show do not lose
Under the premise of genuine, the output brightness of backlight subarea is reduced.Due to the reduction of the output brightness of backlight subarea, this is advantageously allowed
Corresponding be not used in backlight subarea shows that the brightness of the sub-pixel of the image to be displayed reduces, therefore, for showing figure to be shown
The sub-pixel of picture and the brightness ratio for the sub-pixel for being not used in display image to be displayed increase, and display contrast to improve.Together
When, the output brightness of the backlight subarea reduces, and is conducive to improve since light leakage seriously may cause when backlight illumination is higher
Halation phenomenon.
In addition, the output brightness of backlight subarea reduces the output current reduction of corresponding backlight subarea, and lesser backlight is divided
The output electric current in area advantageously reduces the power consumption of display device, and therefore, display methods provided in an embodiment of the present invention also helps
Reduce the power consumption of display device.
Optionally, Fig. 2 is the flow diagram of another display methods provided in an embodiment of the present invention.It, should referring to Fig. 2
Display methods includes:
S110 obtains image to be displayed.
S120, extracts the profile bright line of image to be displayed, and obtains the grayscale peak value Y1 of profile bright line.
S130, judges whether grayscale peak value Y1 is less than preset gray scale value Y0.
If the determination result is YES, then S140 is executed.
Grayscale peak value Y1 is increased to preset gray scale value Y0, other sub-pixels of the profile bright line in display panel by S140
'sBrightness valueIncrease to formerBrightness valueM times；And it is the output of backlight subarea corresponding to profile bright line is bright
Degree is reduced to former output brightnessWherein, the value range of γ is 1.9≤γ≤2.5.
Wherein, the brightness value of other sub-pixels of the profile bright line in display panel is increased to M times of former brightness value,It may make the brightness change of each sub-pixel in profile bright line consistent, to advantageously allow display device
The relative luminance of each sub-pixel keeps one in the relative luminance and image to be displayed of each sub-pixel in the image that actual displayed goes out
It causes, so that it is guaranteed that preferable image display effect.
Illustratively, grayscale peak value Y1 is 230, and preset gray scale value Y0 is 240,At this point,Grayscale peak value Y1 is 200, and preset gray scale value Y0 is 235,At this point,This exemplary only explanation, is not constituted to display methods provided in an embodiment of the present invention
Restriction.
Wherein, in order to the quantitative grayscale value for showing sub-pixel and sub-pixel brightness value corresponding relationship, need to introduce
Gamma, different gammas can be shown that the different quantitative relationships of the two, and the similarities and differences of gamma curve can be by γ table
Show, γ is referred to as the gamma factor.
Illustratively, when indicating the corresponding relationship of grayscale value and brightness value based on standard gamma2.2 curve, the value of γ
It is 2.2, at this point,
Due to Y0 > Y1,Therefore, M > 1.By by profile
The output brightness of backlight subarea corresponding to bright line is reduced to former output brightnessThe output brightness of backlight subarea can be made to drop
It is low, thus comprehensively consider the variation of the brightness value of the output brightness change of backlight subarea and the sub-pixel of profile bright line, it can be true
The true display brightness of the profile bright line of image to be displayed and the consistency of its brightness to be shown are protected, thus it is advantageously ensured that aobvious
Show undistorted.Under the premise of herein, due to the reduction of the output brightness of backlight subarea, it is corresponding to advantageously allow the backlight subarea
Be not used in and show that the brightness of the sub-pixel of the image to be displayed reduces, therefore, for show the sub-pixel of image to be displayed with not
For showing that the brightness ratio of the sub-pixel of image to be displayed increases, displayed contrast to improve.Meanwhile the backlight subarea
Output brightness reduce, be conducive to improve the halation phenomenon due to caused by light leakage when backlight illumination is higher.In addition, being conducive to
The power consumption for reducing display device, extends the service life of display device.
Optionally, preset gray scale value Y0 is highest grayscale value.
Wherein, highest grayscale value is the corresponding grayscale value of the displayable highest display brightness of display panel.
Illustratively, which is 255, at this point, preset gray scale value Y0 is 255.
So set, can make the output brightness of backlight subarea reduces to the greatest extent, to be conducive to improve display comparison
Degree and halation, while can farthest reduce the power consumption of display device.
Optionally, Fig. 3 is the flow diagram of another display methods provided in an embodiment of the present invention.It, should referring to Fig. 3
Display methods includes:
S210 obtains image to be displayed.
S220, extracts the profile bright line of image to be displayed, and obtains the grayscale peak value Y1 of profile bright line.
S230, judges whether grayscale peak value Y1 is less than preset gray scale value Y0.
If the determination result is YES, then S240 is executed.
Grayscale peak value Y1 is increased to preset gray scale value Y0, other sub-pixels of the profile bright line in display panel by S240
'sBrightness valueIncrease to formerBrightness valueM times；And it is the output of backlight subarea corresponding to profile bright line is bright
Degree is reduced to former output brightnessWherein, the value range of γ is 1.9≤γ≤2.5.
If judging result be it is no, execute S250.
S250, by K times of the line width overstriking of profile bright line to former line width, and by the corresponding backlight subarea of profile bright line
Output brightness be reduced to former output brightnessWherein, K > 1.
Wherein, if judging result be it is no, grayscale peak value Y1 is not less than preset gray scale value Y0, at this point, " increase grayscale value "
Mode feasibility it is poor.In the case, S250 can be performed, i.e., by by the line width overstriking of profile bright line, to reach
Under the premise of the display brightness of the profile bright line of image to be displayed is constant, improve the purpose of contrast and halation.
Illustratively, the value of K can for 1.3,2,Or other are greater than 1 other decimals, score or integer, the present invention
Embodiment is not construed as limiting this.
Firstly, it is necessary to explanation, when preset gray scale value Y0 be highest grayscale value when, if the judging result of S230 be it is no,
That is when grayscale peak value Y1 is equal to highest grayscale value, grayscale value can not be further added by, then S240 is infeasible, at this point, executing S250.
Secondly, it should be noted that when preset gray scale value Y0 is less than highest grayscale value, if the judging result of S230 is
It is that i.e. grayscale peak value Y1 is less than preset gray scale value Y0, and certainly, grayscale peak value Y1 is again smaller than highest grayscale value at this time, at this point, can
It is parallel to execute S240 and S250, i.e., " grayscale peak value Y1 is being increased into preset gray scale value Y0, the profile bright line in display panel
The grayscale values of other sub-pixels increase to M times of former grayscale value," while, " by the line width overstriking of profile bright line
To K times of former line width ", at this point, the output brightness of the corresponding backlight subarea of profile bright line is reduced to former output brightnessActual displayed brightness to ensure the profile bright line of image to be displayed is consistent with its brightness to be shown, and in this premise
Lower improvement contrast and halation, while reducing the power consumption of display device.
Optionally, 1 K≤3 <, and K is integer.
It is arranged such, on the one hand, be conducive to simplify the calculating process in algorithm；On the other hand, the overstriking of bright line profile times
Number is unlikely to too big, to be conducive to avoid display distortion.
Illustratively, the value of K can be 2 or 3.
It should be noted that comprehensively considering the resolution ratio of display panel, resolution and display effect, picture is being shown not
Under the premise of distortion, the value of K can be arranged according to the actual demand of display methods and display device, and the embodiment of the present invention is to this
It is not construed as limiting.
Optionally, the former line width of profile bright line is equal to A times of the size of sub-pixel, the line width of the profile bright line after overstriking
Equal to B times of the size of sub-pixel, wherein A and B is positive integer, and B > A.
So set, the overstriking of profile bright line can be realized in sub-pixel size rank.
Wherein, the size of sub-pixel can be regarded as width of the sub-pixel along preset direction.Illustratively, sub-pixel is constituted
Array of sub-pixels, when the shape of sub-pixel is rectangular, the size of sub-pixel can be regarded as the length or short side of the long side of sub-pixel
Length；When the shape of sub-pixel is round, the size of sub-pixel can be regarded as the length of the diameter of sub-pixel；Sub-pixel
When shape is irregular figure, the size of sub-pixel can be regarded as sub-pixel in the array of sub-pixels along the length of preset direction
Degree, the preset direction are vertical with the extending direction of profile bright line.Illustratively, when the extending direction of profile bright line is line direction,
The preset direction is column direction, and column direction is vertical with line direction.
Wherein, B can be the integral multiple or non-integral multiple of A.
Illustratively, the value that the value of A is 1, B can be 2 or 3；The value that the value of A is 5, B can be 6,7 or 8.This
Exemplary only explanation, but do not constitute the restriction to display methods provided in an embodiment of the present invention.
On this basis, Fig. 4 is the flow diagram of another display methods provided in an embodiment of the present invention.Referring to figure
4, which includes:
S310 obtains image to be displayed.
S320, extracts the profile bright line of image to be displayed, and obtains the grayscale peak value Y1 of profile bright line.
S330, judges whether grayscale peak value Y1 is less than preset gray scale value Y0.
If the determination result is YES, then S340 is executed.
Grayscale peak value Y1 is increased to preset gray scale value Y0, other sub-pixels of the profile bright line in display panel by S340
'sBrightness valueIncrease to formerBrightness valueM times；And it is the output of backlight subarea corresponding to profile bright line is bright
Degree is reduced to former output brightnessWherein, the value range of γ is 1.9≤γ≤2.5.
If judging result be it is no, execute S350.
S350, by the line width overstriking of profile bright line to former line widthTimes, and by the corresponding backlight subarea of profile bright line
Output brightness be reduced to former output brightnessWherein, B > A.
Wherein, by the adjusting for exporting brightness of grayscale value and backlight subarea in S340, to ensure the wheel of image to be displayed
The actual displayed brightness of wide bright line is consistent with its brightness to be shown；Pass through the line width of profile bright line and backlight subarea in S350
The adjusting of brightness is exported, to ensure that the actual displayed brightness of profile bright line of image to be displayed is consistent with its brightness to be shown.When
So, on this basis, in order to ensure the actual displayed brightness of the profile bright line of image to be displayed is consistent with its brightness to be shown,
Can also be according to the actual demand of display methods and display device, while adjusting the line width and backlight of grayscale value, profile bright line
The output brightness of subregion, the embodiment of the present invention are not construed as limiting this.
Illustratively, Fig. 5 is the display effect comparison of display methods provided in an embodiment of the present invention and existing display methods
Figure shows display renderings 900 (see Fig. 5) He Benfa of existing display methods when image to be displayed is a curved lines
The display renderings 910 (see Fig. 5) for the display methods that bright embodiment provides show the first display 000 He of image before improving
Improved second display image 001.Wherein, backlight subarea can be divided into two classes, respectively ON state backlight area 810 and OFF state back
Light area 820.
Illustratively, the line width of the first display image 000 is 1.5mm, and grayscale peak value Y1 is 230；Second display image
001 line width is 2.25mm, and grayscale peak value Y1 is 255.
It should be noted that be shown in figure backlight lights effect in order to show improvement effect in Fig. 5.Its
In, ON state backlight area 810 is lit, to emit beam for showing image to be displayed；OFF state backlight area 820 is not lit, i.e.,
It does not shine.The whole display brightness of second display image 001 is consistent with the first display whole display brightness of image 000, this hair
The display methods that bright embodiment provides is by increasing the line width of the profile bright line of image to be displayed and grayscale peak value Y1, backlight
The output current reduction of subregion, so that the output brightness of backlight subarea reduces, contrast and halation are improved as a result, and aobvious
The lower power consumption of showing device.
Secondly, it should be noted that the merely exemplary backlight subarea for showing 4 rows 4 and arranging in Fig. 5, and wherein 4 back
Light subregion is lit, but the restriction not to display methods provided in an embodiment of the present invention.It in other embodiments, can root
According to the actual demand of display methods, the quantity and arrangement mode of backlight subarea are set, and the backlight subarea being lit is set
Quantity and position, the embodiment of the present invention are not construed as limiting this.
Illustratively, Fig. 6 is the display effect of another display methods provided in an embodiment of the present invention and existing display methods
Fruit comparison diagram, the third before showing improvement when image to be displayed is a straight line show that image 003 and the improved 4th is shown
Diagram is as 004.Wherein, two figures of left and right are in pixel scale by the amplified display renderings of image to be displayed.
Illustratively, in pixel scale, third shows that image 003 is " white line " of 2 sub-pixel widths, the
Four display images 004 are " the grey lines " of 3 sub-pixels, are applied in macroscopic view display picture, illustratively, are used for
When the picture display of display device, since the size of sub-pixel is generally equivalent to or is less than micron order, human eye can not be felt
The display brightness of the lines in image 003 and the 4th display image 004 and the difference of display width are shown by third, thus,
Display methods provided in an embodiment of the present invention is before the final display brightness and brightness to be shown for ensuring image to be displayed are consistent
It puts, the output brightness of backlight subarea can be reduced, display contrast and improve halation to can be improved, and advantageously reduce aobvious
The power consumption of showing device.
Firstly, it is necessary to illustrate, the width of sub-pixel described in Fig. 6 is by taking the orientation in Fig. 6 as an example, along by a left side
To the size of the sub-pixel in right direction.
Secondly, it should be noted that merely exemplary in Fig. 5 and Fig. 6 that existing display is illustrated by taking curve and straight line as an example
The display contrast effect of method and display methods provided in an embodiment of the present invention, but not to provided in an embodiment of the present invention aobvious
Show the restriction of method.In other embodiments, image to be displayed can be also other complicated pictures, and the embodiment of the present invention is to this
It is not construed as limiting.
Again, it should be noted that be that simple geometry figure or simple geometry graphic joining are formed for image to be displayed
Complex geometry for, when the brightness to be shown of the geometric figure graphic edge and it is internal consistent everywhere when, it is entire several
Grayscale value, geometric dimension size (being equivalent to " line width " above) and the output brightness of backlight subarea of what figure
It is adjusted using above-mentioned display method, displays contrast and improve halation to improve, and reduce the power consumption of display device.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of display device, which can be used for executing
Above-mentioned display method provided in an embodiment of the present invention, or it is interpreted as what the display device can be provided using above embodiment
Display methods carries out picture and shows, therefore the display device also has a technical effect possessed by above-mentioned display method, it is identical it
It is in and hereinafter repeats no more, can refer to and the explanation of display methods is understood above.
Illustratively, Fig. 7 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.It, should referring to Fig. 7
Display device 40 includes: image receiver module 410, for obtaining image to be displayed；Profile extraction module 420, for extract to
It shows the profile bright line of image, and obtains the grayscale peak value Y1 of profile bright line；Condition judgment module 430, for judging grayscale peak
Whether value Y1 is less than preset gray scale value Y0；First output data determining module 440, for being less than default ash in grayscale peak value Y1
When rank value Y0, increase the grayscale value of other sub-pixels of the profile bright line in grayscale peak value Y1, and increase display panel；And
Reduce the output brightness of backlight subarea corresponding to profile bright line.
Optionally, the first output data determining module 440 increases grayscale peak value Y1, and increases the wheel in display panel
The grayscale value of other sub-pixels of wide bright line；And the output brightness for reducing backlight subarea corresponding to profile bright line can specifically wrap
It includes: grayscale peak value Y1 being increased into preset gray scale value Y0, the grayscale value of other sub-pixels of the profile bright line in display panel increases
M times of former grayscale value is added to,And the output brightness of backlight subarea corresponding to profile bright line is reduced to original
Export brightnessWherein, the value range of γ is 1.9≤γ≤2.5.
In this way, advantageously allow display device actual displayed go out image in each sub-pixel relative luminance with it is to be shown
The relative luminance of each sub-pixel is consistent in image, so that it is guaranteed that preferable image display effect, while improving display comparison
Halation is spent and improved, and reduces the power consumption of display device.
Optionally, Fig. 8 is the structural schematic diagram of another display device provided in an embodiment of the present invention.Reference Fig. 8,
On the basis of display device 40 shown in Fig. 7, which further includes that the second output data determines submodule 450；Second
Output data determines submodule 450 for when grayscale peak value Y1 is not less than preset gray scale value Y0, the line width of profile bright line to be added
Thick K times to former line width, and the output brightness of the corresponding backlight subarea of profile bright line is reduced to former output brightnessIts
In, K > 1.
Optionally, Fig. 9 is the structural schematic diagram of another display device provided in an embodiment of the present invention.Reference Fig. 9,
On the basis of display device 40 shown in Fig. 8, which further includes parameter memory module 460, parameter memory module
460 are electrically connected with condition judgment module 430；Parameter memory module 460 is for storing preset gray scale value Y0 and K.
Optionally, display panel includes multiple sub-pixels in array distribution；The former line width of profile bright line is equal to sub-pixel
A times of size, the line width of the profile bright line after overstriking is equal to B times of the size of sub-pixel, wherein A and B is positive integer,
And B > A.
Optionally, the second output data determines submodule 450 by the output brightness of the corresponding backlight subarea of profile bright line
It is reduced to former output brightnessIt include: to be reduced to former output bright the output brightness of the corresponding backlight subarea of profile bright line
Degree
So set, the overstriking of profile bright line can be realized in sub-pixel size rank.
Optionally, preset gray scale value Y0 is highest grayscale value.
So set, can make the output brightness of backlight subarea reduces to the greatest extent, to be conducive to improve display comparison
Degree and halation, while can farthest reduce the power consumption of display device.
It should be noted that in the structural schematic diagram of the display device 40 shown in Fig. 7-Fig. 8, it is merely exemplary from function
On each module is divided, and using connecting line show the signal between module transmit relationship.In actual products, above-mentioned
The spatial position of each module can overlap, and the signal transmission between module can be wire transmission or wireless transmission, the embodiment of the present invention
This is not construed as limiting.
Illustratively, display device 40 may include mobile phone, computer and intelligent wearable device (for example, intelligent hand
Table) etc. display devices, the embodiment of the present invention this is not construed as limiting.
Note that the above is only a better embodiment of the present invention and the applied technical principle.Those skilled in the art can manage
Solution, the invention is not limited to the specific embodiments described herein, is able to carry out various apparent changes for a person skilled in the art
Change, readjust, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although passing through above embodiments
The present invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from structure of the present invention
It can also include more other equivalent embodiments in the case where think of, and the scope of the present invention is determined by scope of the appended claims
It is fixed.
Claims (14)
1. a kind of display methods characterized by comprising
Obtain image to be displayed；
The profile bright line of the image to be displayed is extracted, and obtains the grayscale peak value Y1 of the profile bright line；
Judge whether the grayscale peak value Y1 is less than preset gray scale value Y0；
If so, increase the grayscale peak value Y1, and increase other sub-pixels of the profile bright line in display panel
Grayscale value；And reduce the output brightness of backlight subarea corresponding to the profile bright line.
2. display methods according to claim 1, which is characterized in that increase the grayscale peak value Y1, and increase display
The grayscale value of other sub-pixels of the profile bright line in panel；And reduce backlight subarea corresponding to the profile bright line
Exporting brightness includes:
The grayscale peak value Y1 is increased into the preset gray scale value Y0, other sub- pictures of the profile bright line in display panel
The brightness value of element increases to M times of former brightness value；And by backlight subarea corresponding to the profile bright line
Output brightness is reduced to former output brightnessWherein, the value range of γ is 1.9≤γ≤2.5.
3. display methods according to claim 1, which is characterized in that the preset gray scale value Y0 is highest grayscale value.
4. display methods according to claim 1, which is characterized in that judge whether the grayscale peak value Y1 is less than default ash
After rank value Y0, further includes:
If it is not, then by K times of the line width overstriking of the profile bright line to former line width, and by the corresponding backlight of the profile bright line
The output brightness of subregion is reduced to former output brightness
Wherein, K > 1.
5. display methods according to claim 4, which is characterized in that 1 K≤3 <, and K is integer.
6. display methods according to claim 4, which is characterized in that the former line width of the profile bright line is equal to the sub- picture
A times of the size of element, the line width of the profile bright line after overstriking are equal to B times of the size of the sub-pixel, wherein A and B are equal
For positive integer, and B > A.
7. display methods according to claim 6, which is characterized in that by the corresponding backlight subarea of the profile bright line
Output brightness is reduced to former output brightnessIt include: to reduce the output brightness of the corresponding backlight subarea of the profile bright line
To former output brightness
8. a kind of display device, which is characterized in that require the described in any item display methods of 1-7 for perform claim, comprising:
Image receiver module, for obtaining image to be displayed；
Profile extraction module for extracting the profile bright line of the image to be displayed, and obtains the grayscale peak of the profile bright line
Value Y1；
Condition judgment module, for judging whether the grayscale peak value Y1 is less than preset gray scale value Y0；
First output data determining module, for increasing the grayscale when the grayscale peak value Y1 is less than preset gray scale value Y0
The grayscale value of other sub-pixels of the profile bright line in peak value Y1, and increase display panel；And it is bright to reduce the profile
The output brightness of backlight subarea corresponding to line.
9. display device according to claim 8, which is characterized in that described in the first output data determining module increases
The grayscale value of other sub-pixels of the profile bright line in grayscale peak value Y1, and increase display panel；And reduce the wheel
The output brightness of backlight subarea corresponding to wide bright line includes: that the grayscale peak value Y1 is increased to the preset gray scale value Y0,
Other sub-pixels of the profile bright line in display panelBrightness valueIncrease to formerBrightness valueM times；
And the output brightness of backlight subarea corresponding to the profile bright line is reduced to former output brightnessWherein, the value model of γ
It encloses for 1.9≤γ≤2.5.
10. display device according to claim 8, which is characterized in that further include that the second output data determines submodule；
Second output data determines that submodule is used for when the grayscale peak value Y1 is not less than preset gray scale value Y0, will be described
The line width overstriking of profile bright line is dropped to K times of former line width, and by the output brightness of the corresponding backlight subarea of the profile bright line
Down to former output brightnessWherein, K > 1.
11. display device according to claim 10, which is characterized in that further include parameter memory module, the parameter is deposited
Storage module is electrically connected with the condition judgment module；
The parameter memory module is for storing the preset gray scale value Y0 and K.
12. display device according to claim 10, which is characterized in that the display panel includes in the more of array distribution
A sub-pixel；
The former line width of the profile bright line is equal to A times of the size of the sub-pixel, the line width of the profile bright line after overstriking
Equal to B times of the size of the sub-pixel, wherein A and B is positive integer, and B > A.
13. display device according to claim 12, which is characterized in that second output data determines that submodule should
The output brightness of the corresponding backlight subarea of the profile bright line is reduced to former output brightnessIt include: by the profile bright line
The output brightness of corresponding backlight subarea is reduced to former output brightness
14. display device according to claim 8, which is characterized in that the preset gray scale value Y0 is highest grayscale value.
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