CN106652925A - Image processing method and liquid crystal display - Google Patents
Image processing method and liquid crystal display Download PDFInfo
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- CN106652925A CN106652925A CN201510719257.7A CN201510719257A CN106652925A CN 106652925 A CN106652925 A CN 106652925A CN 201510719257 A CN201510719257 A CN 201510719257A CN 106652925 A CN106652925 A CN 106652925A
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Abstract
The embodiment of the invention provides an image processing method and a liquid crystal display, relates to the field of liquid crystal displays, and can effectively solve a problem that a picture displayed by a liquid crystal display has color cast. The method comprises the steps: obtaining the gray scale value of each of N display sections, wherein N is an integer greater than or equal to one; setting a backlight value of a corresponding backlight section according to the gray scale value of each of N display sections; Adjusting the gray scale value of the first display section according to the differences between the backlight value of the first display section and the backlight values of the (N-1) display sections except the first display sections and the distance parameters between the first display section and the (N-1) display sections, and obtaining the adjusted gray scale value of the first display section, wherein the first display section is any one of the N display sections. The method is used for solving the problem that the picture displayed by the liquid crystal display has color cast.
Description
Technical field
The present invention relates to field of liquid crystal, more particularly to a kind of image processing method and liquid crystal
Display.
Background technology
At present, in field of liquid crystal, generally liquid crystal display is realized using technology of quantum dots
The high colour gamut of device shows.Specifically, quantum dot film is encapsulated in the middle of two-layer water oxygen Obstruct membrane,
There is quantum dot in quantum dot film, then quantum dot film and two-layer water oxygen Obstruct membrane are placed on into diffusion
The top of plate or light guide plate, using blue light source diffuser plate or light guide plate are irradiated, through diffusion
To quantum dot film, quantum dot film converts blue light into ruddiness, green to the blue light illumination of plate or light guide plate
Light and blue light, the ruddiness, green glow and blue light composition white light, i.e. quantum dot film is converted blue light into
White light, the quantum dot film is white light conversion layer, so as to the high colour gamut for realizing liquid crystal display shows
Show.
In prior art, in order that the high colour gamut display effect of liquid crystal display more preferably, is adopted and divided
Dynamic control (local dimming) technology in area's is improving the contrast of liquid crystal display.It is described
Subregion dynamic control is that backlight area is divided into up to a hundred or more backlight subareas, independent control
The backlight for making each backlight subarea provides illumination for viewing area.Wherein, backlight area is arranged
There is backlight, viewing area can be LCDs, and the liquid crystal display includes liquid crystal
The backlight of display screen and blue light.The corresponding viewing area in each backlight subarea is shone to show subregion
It is to convert blue light into ruddiness, green glow and indigo plant by quantum dot film to be mapped to each white light for showing subregion
Light, the white light of the ruddiness, green glow and blue light composition.Example, as shown in figure 1, liquid crystal
Show that device shows complete white picture.As shown in Fig. 2 when liquid crystal display shows complete white picture, liquid
The display subregion light schematic diagram of crystal display, each shows that the blue light of subregion is mainly from this
The blue light of the corresponding backlight subarea of subregion is shown, each shows that the ruddiness and green glow of subregion are mainly
It is red that blue light from the corresponding backlight subarea of display subregion is excited after white light conversion layer
Other in addition to the corresponding backlight subarea of display subregion in light and green glow, and backlight area
The blue light of backlight subarea is excited through white light conversion layer and scatters to the ruddiness of the display subregion and green
Light.As shown in figure 3, liquid crystal display display window picture.As shown in figure 4, working as liquid crystal
When showing device display window picture, the display subregion light schematic diagram of liquid crystal display, window picture
The corresponding backlight subareas of display subregion B backlight open, in viewing area except window draw
The backlight for showing the corresponding backlight subarea of subregion outside the display subregion B in face close or
It is dimmed, the high colour gamut display effect of liquid crystal display is so caused by subregion dynamic control technology
More preferably.
But, the blue light of window picture is basically unchanged, and due to removing window in the A of viewing area
The backlight for showing the corresponding backlight subarea of subregion outside the display subregion B of picture close or
Person is dimmed, and the ruddiness and green glow of window picture only include the display subregion B from the window picture
Ruddiness and green glow that the blue light of corresponding backlight subarea is excited after white light conversion layer, window is drawn
The ruddiness in face and green glow are reduced, and cause (R) grey decision-making red in the case of window picture and green
(G) red grey decision-making and green grey decision-making in the case that grey decision-making is less than complete white picture, liquid crystal display
There is colour cast in the picture that device shows.
The content of the invention
The embodiment of the present invention provides a kind of image processing method and liquid crystal display, can effectively solve
There is colour cast in the picture that certainly liquid crystal display shows.
To reach above-mentioned purpose, the technical scheme that the embodiment of the present invention is adopted is：
A kind of first aspect, there is provided image processing method, is applied to liquid crystal display, including：
N number of grey decision-making for showing each display subregion in subregion is obtained, the N is big
In the integer equal to 1；
The corresponding back of the body is arranged according to each described grey decision-making for showing subregion in N number of display subregion
The backlight value of light subregion；
According to the described first backlight value for showing subregion and in addition to described first shows subregion
The difference of the N-1 backlight value for showing subregion, and the first display subregion and N-1
The distance between individual display subregion parameter, adjusts the described first grey decision-making for showing subregion,
After being adjusted described first shows the grey decision-making of subregion, and described first shows that subregion is described
Each shows subregion in N number of display subregion.
It is described according to institute with reference in a first aspect, in the first achievable mode of first aspect
The backlight value for stating the first display subregion is described with N-1 in addition to described first shows subregion
The difference of the backlight value of subregion is shown, and described first shows subregion with the N-1 display
The distance between subregion parameter, adjusting the grey decision-making of the first display subregion includes：
According to the described first backlight value for showing subregion and in addition to described first shows subregion
The difference of the N-1 backlight value for showing subregion, and the first display subregion and N-1
The distance between individual display subregion parameter acquiring backlight affects coefficient, the backlight to affect system
Count the backlight that the corresponding backlight subarea of subregion is shown described in the display by stages for representing adjacent
The difference relation of value, the backlight value of the corresponding backlight subarea of the display subregion is according to showing point
The backlight value of the corresponding backlight subarea of the display subregion that the grey decision-making in area is arranged, the backlight
Subregion is provided with backlight；
When the backlight affects coefficient to be more than preset value, reduce described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, reduces described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
When the backlight affects coefficient to be less than preset value, increase described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, increase described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
Wherein, the grey decision-making for showing subregion includes red grey decision-making, green grey decision-making and bluish grey rank
Value.
With reference to the first achievable mode of first aspect, second in first aspect is capable of achieving
It is described to show that the backlight value of subregion shows subregion with removing described first according to described first in mode
Outside the described backlight values for showing subregion of N-1 difference, and described first show subregion
The distance between display subregion described with N-1 parameter acquiring backlight affects coefficient to include：
Obtain the described first backlight value for showing subregion and in addition to described first shows subregion
Each shows the difference of the backlight value of subregion in the N-1 backlight value for showing subregion, obtains
N-1 difference；
The product of each difference and respective distances parameter is obtained, N-1 product value, the correspondence is obtained
Distance parameter is to obtain the difference in the described first display subregion display subregion described with N-1
The distance between the display subregion of value parameter；
The backlight shadow is obtained according to the N-1 product value and display subregion distance influence factor
Ring coefficient.
It is capable of achieving with reference to the first achievable mode of first aspect or second of first aspect
Mode, in the third achievable mode of first aspect, in the acquisition backlight coefficient is affected
Afterwards, methods described also includes：
Show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to described first；
Obtaining the backlight affects ratio, the institute of coefficient and the backlight value of the described first display subregion
That states regulation coefficient and 255 product rounds value.
With reference to the third achievable mode of first aspect, the 4th kind in first aspect is capable of achieving
In mode, the red grey decision-making for reducing the first display subregion is described after being adjusted
The first red grey decision-making for showing subregion, reduces the described first green grey decision-making for showing subregion, obtains
The green grey decision-making of the first display subregion after adjustment includes：
The described first red grey decision-making for showing subregion is reduced according to the value that rounds, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value reduce it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion；
The increase described first shows the red grey decision-making of subregion, described first after being adjusted
The red grey decision-making of subregion is shown, increases the described first green grey decision-making for showing subregion, be adjusted
The green grey decision-making of the first display subregion afterwards includes：
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value increase it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion.
With reference to the third achievable mode of first aspect, the 5th kind in first aspect is capable of achieving
In mode, when the backlight affects coefficient to be less than preset value, methods described also includes：
When the red grey decision-making of the first display subregion is 255,
The green grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion green grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion；
When the green grey decision-making of the first display subregion is 255,
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion.
A kind of second aspect, there is provided liquid crystal display, including：
Acquiring unit, for obtaining N number of GTG for showing each display subregion in subregion
Value, the N is the integer more than or equal to 1；
Setting unit, for according to each described GTG for showing subregion in N number of display subregion
Value arranges the backlight value of corresponding backlight subarea；
Adjustment unit, for according to described first show subregion backlight value with except described first show
Show the difference of the N-1 backlight value for showing subregion outside subregion, and described first shows
Show the distance between subregion display subregion described with N-1 parameter, adjust first display point
The grey decision-making in area, described first after being adjusted shows the grey decision-making of subregion, and described first shows
Show subregion for each display subregion in N number of display subregion.
With reference to second aspect, in the first achievable mode of second aspect, the adjustment is single
Unit specifically for：
According to the described first backlight value for showing subregion and in addition to described first shows subregion
The difference of the N-1 backlight value for showing subregion, and the first display subregion and N-1
The distance between individual display subregion parameter acquiring backlight affects coefficient, the backlight to affect system
Count the backlight that the corresponding backlight subarea of subregion is shown described in the display by stages for representing adjacent
The difference relation of value, the backlight value of the corresponding backlight subarea of the display subregion is according to showing point
The backlight value of the corresponding backlight subarea of the display subregion that the grey decision-making in area is arranged, the backlight
Subregion is provided with backlight；
When the backlight affects coefficient to be more than preset value, reduce described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, reduces described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
When the backlight affects coefficient to be less than preset value, increase described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, increase described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
Wherein, the grey decision-making for showing subregion includes red grey decision-making, green grey decision-making and bluish grey rank
Value.
With reference to the first achievable mode of second aspect, second in second aspect is capable of achieving
In mode, the adjustment unit specifically for：
Obtain the described first backlight value for showing subregion and in addition to described first shows subregion
Each shows the difference of the backlight value of subregion in the N-1 backlight value for showing subregion, obtains
N-1 difference；
The product of each difference and respective distances parameter is obtained, N-1 product value, the correspondence is obtained
Distance parameter is to obtain the difference in the described first display subregion display subregion described with N-1
The distance between the display subregion of value parameter；
The backlight shadow is obtained according to the N-1 product value and display subregion distance influence factor
Ring coefficient.
It is capable of achieving with reference to the first achievable mode of second aspect or second of second aspect
Mode, in the third achievable mode of second aspect, the acquiring unit is additionally operable to：
Show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to described first；
Obtaining the backlight affects ratio, the institute of coefficient and the backlight value of the described first display subregion
That states regulation coefficient and 255 product rounds value.
With reference to the third achievable mode of second aspect, the 4th kind in second aspect is capable of achieving
In mode, the adjustment unit specifically for：
The described first red grey decision-making for showing subregion is reduced according to the value that rounds, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value reduce it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion；
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value increase it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion.
With reference to the third achievable mode of second aspect, the 5th kind in second aspect is capable of achieving
In mode, the adjustment unit specifically for：
When the red grey decision-making of the first display subregion is 255,
The green grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion green grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion；
When the green grey decision-making of the first display subregion is 255,
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion.
Image processing method provided in an embodiment of the present invention and liquid crystal display, first, obtain N
Each shows the grey decision-making of subregion in individual display subregion；Then, according in N number of display subregion
Each shows that the grey decision-making of subregion arranges the backlight value of corresponding backlight subarea；Show according to first
The backlight value of subregion and the backlight value of the N-1 display subregion in addition to first shows subregion
Difference, and first show subregion and N-1 display the distance between subregion parameter, adjusts the
One grey decision-making for showing subregion, the grey decision-making of the first display subregion after being adjusted, this first
Subregion is shown for each display subregion in N number of display subregion.So as to pass through to adjust each display
The grey decision-making of subregion so that the color of image of liquid crystal display can be solved effectively closer to reality
There is colour cast in the picture that certainly liquid crystal display shows.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing to be used needed for embodiment or description of the prior art will be briefly described, show and
Easy insight, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, on the premise of not paying creative work, can be with according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 provides a kind of liquid crystal display and shows complete white picture view for prior art；
Fig. 2 provides the display subregion that a kind of liquid crystal display shows complete white picture for prior art
Light schematic diagram；
Fig. 3 provides a kind of liquid crystal display display window picture view for prior art；
Fig. 4 provides a kind of display subregion of liquid crystal display display window picture for prior art
Light schematic diagram；
Fig. 5 provides a kind of image processing method flow chart for the embodiment of the present invention；
Fig. 6 illustrates for the display partitioned organization that the embodiment of the present invention provides a kind of liquid crystal display
Figure；
Fig. 7 provides a kind of distance of the display by stages of liquid crystal display for the embodiment of the present invention
Coefficient schematic diagram；
Fig. 8 shows for the display partitioned organization that the embodiment of the present invention provides another kind of liquid crystal display
It is intended to；
Fig. 9 provide for the embodiment of the present invention display by stages of another kind of liquid crystal display away from
From coefficient schematic diagram；
Figure 10 provides a kind of gamma curve schematic diagram for the embodiment of the present invention；
Figure 11 provides a kind of liquid crystal display device structure schematic diagram for the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment, rather than the embodiment of whole.Based on the embodiment in the present invention, this area is general
The every other embodiment that logical technical staff is obtained under the premise of creative work is not made,
Belong to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of image processing method, is applied to liquid crystal display, such as schemes
Shown in 5, methods described includes：
Step 101, the grey decision-making for obtaining each display subregion in N number of display subregion, N is big
In the integer equal to 1.
Showing the grey decision-making of subregion includes red grey decision-making, green grey decision-making and blue grey decision-making.First,
Low-voltage differential signal (the English full name that liquid crystal display passes through display subregion：Low-Voltage
Differential Signaling, English abbreviation：LVDS) decomposable asymmetric choice net goes out RGB (RGB)
Pixel Information.Then, respectively according to RGB (RGB) Pixel Information obtain red grey decision-making,
Green grey decision-making and blue grey decision-making.
Example, the grey decision-making sum for showing all red pixels in subregion is obtained, divide according to showing
The grey decision-making sum of all red pixels obtains the average ash for showing all red pixels in subregion in area
Rank be worth, then obtain show subregion in all red pixels average gray-scale value and show subregion in own
The weighted average of the maximum gray value of red pixel, obtains showing the red grey decision-making of subregion.In the same manner,
Obtain green grey decision-making and blue grey decision-making.
It should be noted that N number of display subregion can be divided according to N number of backlight subarea,
N number of backlight subarea can be divided according to backlight, and each backlight is a backlight point
Area, shows that subregion is one-to-one with backlight subarea mutual corresponding, and N number of display subregion constitutes viewing area
Domain, N number of backlight subarea constitutes backlight area.Optionally, N number of display subregion can also be root
What the image that factually border liquid crystal display shows was divided, then each shows the corresponding backlight of subregion
Subregion is exactly backlight subarea, and the backlight subarea potentially includes a backlight and is likely to include
Multiple backlights.
Example, it is assumed that liquid crystal display includes that 9 show subregion and 9 backlight subareas, show
Show that subregion is one-to-one with backlight subarea mutual corresponding.As shown in fig. 6, the display of liquid crystal display
Subregion schematic diagram, including show subregion 1, show subregion 2, show subregion 3, show subregion 4,
Subregion 5 is shown, subregion 6 is shown, is shown subregion 7, shows subregion 8 and show subregion 9.
Step 102, according to it is N number of display subregion in each show subregion grey decision-making arrange correspondence
Backlight subarea backlight value.
Example, if the grey decision-making of statistics is 100, and full grey decision-making is 255, then right
The backlight value answered is 100/256 dutycycle, and now, backlight value is backlight driving value, then root
The current value of backlight subarea driving or the dutyfactor value of electric current, adjustment are adjusted according to backlight driving value
The brightness of each backlight subarea.Optionally, the brightness of backlight subarea can also be adjusted by electric current,
100/256*I, I are maximum current values.
Step 103, according to first show subregion backlight value with except first show subregion in addition to
The difference of the backlight value of N-1 display subregion, and the first display subregion and N-1 display point
The distance between area parameter, adjustment first shows the grey decision-making of subregion, first after being adjusted
The grey decision-making of subregion is shown, first shows subregion for each display subregion in N number of display subregion.
Specifically, according to the first backlight value for showing subregion and in addition to first shows subregion
The difference of the backlight value of N-1 display subregion, and the first display subregion and N-1 display point
The distance between area parameter acquiring backlight affects coefficient；Then, when backlight affects coefficient more than pre-
The first display subregion if during value, reducing the first red grey decision-making for showing subregion, after being adjusted
Red grey decision-making, reduce first show subregion green grey decision-making, after being adjusted first display
The green grey decision-making of subregion；When backlight affects coefficient to be less than preset value, increase first shows subregion
Red grey decision-making, after being adjusted first display subregion red grey decision-making, increase first show
The green grey decision-making of subregion, the green grey decision-making of the first display subregion after being adjusted.Backlight affects
Coefficient is used to represent the adjacent back of the body for showing and the corresponding backlight subarea of subregion being shown described in by stages
The difference relation of light value, the backlight value of the corresponding backlight subarea of the display subregion is according to display
The backlight value of the corresponding backlight subarea of the display subregion that the grey decision-making of subregion is arranged, backlight point
Area is provided with backlight.
First, the first backlight value and the N-1 in addition to first shows subregion for showing subregion is obtained
Each shows the difference of the backlight value of subregion in the individual backlight value for showing subregion, obtains N-1 difference
Value；The product of each difference and respective distances parameter is obtained, N-1 product value, the correspondence is obtained
Distance parameter is that the first display subregion shows the display that the difference is obtained in subregion with N-1
The distance between subregion parameter；Obtained according to N-1 product value and display subregion distance influence factor
Backlight affects coefficient.
For example, calculate and show that the backlight of subregion 1 affects coefficient in Fig. 6.First, obtain and show
The backlight value of subregion 1 with except show subregion 1 in addition to 8 display subregion backlight values in each
The difference of the backlight value of subregion is shown, 8 differences are obtained；Obtain each difference to join with respective distances
The product of number, obtains 8 product value, and the respective distances parameter shows to show subregion 1 and 8
The distance between the display subregion of difference parameter is obtained in subregion；According to N-1 product value and
Show that subregion distance influence factor obtains backlight and affects coefficient.
Assume that the backlight value for showing subregion is BL, it is △ BL that backlight affects coefficient, shows by stages
Distance parameter be L, show subregion 3, show subregion 5, show subregion 7, show subregion 9
It is a with the display subregion distance influence factor for showing subregion 1, shows subregion 2, shows subregion
4th, show subregion 6, show subregion 8 and the display subregion distance influence factor for showing subregion 1
For b.
△ BL=[(BL3-BL1)×L13+(BL5-BL1)×L15+(BL7-BL1)×L17+(BL9-BL1)×L19]×a+
[(BL2-BL1)×L12+(BL4-BL1)×L14+(BL6-BL1)×L16+(BL8-BL1)×L18]×b
Wherein, BL1To show the backlight value of subregion 1, BL2To show the backlight value of subregion 2,
The like, BL3To show the backlight value of subregion 3, BL4To show the backlight value of subregion 4,
BL5To show the backlight value of subregion 5, BL6To show the backlight value of subregion 6, BL7To show
The backlight value of subregion 7, BL8To show the backlight value of subregion 8, BL9To show the back of the body of subregion 9
Light value.L13To show subregion 1 and showing the distance between subregion 3 parameter, L12Divide to show
The distance between area 1 and display subregion 2 parameter.
It should be noted that a, b represent weight, a+b=1, a and b can with it is identical can also
It is different.Show that subregion distance influence factor can be according to showing partition size, be provided with backlight
Printed circuit board (PCB) (English full name：Printed circuit board, English abbreviation：PCB)
Plate to diffuser plate distance, and the straight-down negative optical lens (lens) being arranged on backlight
From the actual conditions such as spot size be adjusted.
The distance parameter for showing by stages can be that the central point of a display subregion arrives another
Show the distance of the central point of subregion.Optionally, if showing, subregion is impartial division, is shown
The distance parameter of by stages can also be the distance coefficient for showing by stages.
Based on Fig. 6 as shown in fig. 7, showing the distance coefficient of by stages.Subregion 1 and subregion 3
Distance coefficient beSubregion 1 is with the distance coefficient of subregion 5Subregion 1 and subregion 7
Distance coefficient beSubregion 1 is with the distance coefficient of subregion 9Subregion 1 and subregion 2
Distance coefficient beSubregion 1 is with the distance coefficient of subregion 4Subregion 1 with point
The distance coefficient in area 6 isSubregion 1 is with the distance coefficient of subregion 8
Example, if as shown in figure 8, liquid crystal display includes 25 display subregions, such as figure
Shown in 9, the distance coefficient of 25 display by stages.
Backlight affect coefficient △ BL can be：
Then, show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to first.
As shown in Figure 10, gamma curve.Abscissa is grey decision-making, and ordinate is that normalization is bright
Degree.The grey decision-making of abscissa is the grey decision-making of the LCDs of 8 bits, i.e. LCDs
Grey decision-making be 28=256.If the grey decision-making of the LCDs of 10 bits, i.e. liquid crystal
The grey decision-making of display screen is 210=1024.Specifically, adjustment system can be obtained according to formula 1.1
Number,
Formula 1.1
Wherein, the gamma song that function f can be used according to the producer of different liquid crystal displays
Line choosing, the gamma curve that the w and γ in Fig. 8 is just used by different manufacturers.X is used for
Grey decision-making is represented, c is used to represent the gamma used according to the producer of different liquid crystal displays
The variable quantity of grey decision-making of the curve to choose, y is used to represent regulation coefficient.Show the ash of subregion
Rank value includes red grey decision-making, green grey decision-making and blue grey decision-making.Can be according to the pin of above-mentioned formula 1.1
Regulation coefficient is obtained to red grey decision-making, green grey decision-making and blue grey decision-making.
Again, ratio, the adjustment of the backlight value of coefficient and the first display subregion are affected according to backlight
The grey decision-making for rounding value, adjusting the first display subregion of coefficient and 255 product.
When backlight affects coefficient to be more than preset value, according to value is rounded the first display subregion is reduced
Red grey decision-making, the red grey decision-making of the first display subregion after being adjusted, reduces according to value is rounded
The first green grey decision-making for showing subregion, the green grey decision-making of the first display subregion after being adjusted.
Reduce the described first red grey decision-making and green grey decision-making for showing subregion, can be subtraction, or
Person, weights subtraction.
Example, obtaining affects the backlight of coefficient and the described first display subregion according to the backlight
The ratio of value；Obtain the ratio, the regulation coefficient and 255 product rounds value.Obtain
Take the described first red grey decision-making and the difference for rounding value for showing subregion, the institute after being adjusted
The red grey decision-making of the first display subregion is stated, the described first green grey decision-making for showing subregion and institute is obtained
The difference for rounding value is stated, described first after being adjusted shows the green grey decision-making of subregion.
First shows that the grey decision-making of subregion includes red grey decision-making and green grey decision-making, it is assumed that first shows
The red grey decision-making of subregion is m, and first shows that the green grey decision-making of subregion is n, and regulation coefficient is γ.
After adjustment first shows that the red grey decision-making of subregion is：
After adjustment first shows that the green grey decision-making of subregion is：
Wherein, int is bracket function.
When backlight affects coefficient to be less than preset value, according to value increase first is rounded subregion is shown
Red grey decision-making, the red grey decision-making of the first display subregion after being adjusted, increases according to value is rounded
The first green grey decision-making for showing subregion, the green grey decision-making of the first display subregion after being adjusted.
Increase the described first red grey decision-making and green grey decision-making for showing subregion, can be addition, or
Person, weighted addition.
Example, obtaining affects the backlight of coefficient and the described first display subregion according to the backlight
The ratio of value；Obtain the ratio, the regulation coefficient and 255 product rounds value.Obtain
The red grey decision-making for taking the first display subregion rounds value sum with described, the institute after being adjusted
The red grey decision-making of the first display subregion is stated, the described first green grey decision-making for showing subregion and institute is obtained
State and round value sum, described first after being adjusted shows the green grey decision-making of subregion.
First shows that the grey decision-making of subregion includes red grey decision-making and green grey decision-making, it is assumed that first shows
The red grey decision-making of subregion is m, and first shows that the green grey decision-making of subregion is n, and regulation coefficient is γ.
After adjustment first shows that the red grey decision-making of subregion is：
After adjustment first shows that the green grey decision-making of subregion is：
Wherein, int is bracket function.
It should be noted that preset value can be 0.
Particularly, if it is GTG that the red grey decision-making of the first display subregion has reached 255,255
The maximum of value, backlight affects coefficient to be less than 0, now cannot again increase the first display subregion
Red grey decision-making, needs to reduce the first blue grey decision-making for showing subregion and the green grey decision-making of increase to adjust
Whole first colour cast for showing subregion.
In the same manner, if the green grey decision-making of the first display subregion has reached 255, backlight affects coefficient
Less than 0, now cannot again increase the green grey decision-making of the first display subregion, need reduction first to show
The blue grey decision-making for showing subregion adjusts the colour cast of the first display subregion with the red grey decision-making of increase.
If the red grey decision-making of the first display subregion has reached the green of the 255, and first display subregion
Grey decision-making has reached 255, and backlight affects coefficient to be less than 0, now cannot again increase first and show
Show the red grey decision-making and green grey decision-making of subregion, need to reduce the first blue grey decision-making for showing subregion,
To adjust the colour cast of the first display subregion.
Obtain first to show the blue grey decision-making of subregion and round the difference of value, first after being adjusted
The blue grey decision-making of subregion is shown, specifically, may be referred to adjust red grey decision-making and green grey decision-making
The blue grey decision-making of method adjustment.
Example, first shows that the blue grey decision-making of subregion is l, and regulation coefficient is γ,
After adjustment first shows that the blue grey decision-making of subregion is：
Backlight affects coefficient to be equal to preset value, does not adjust the grey decision-making of the first display subregion.
So, first, N number of grey decision-making for showing each display subregion in subregion is obtained；
Then, corresponding backlight is arranged according to the grey decision-making of each display subregion in N number of display subregion
The backlight value of subregion；According to the first backlight value for showing subregion and in addition to first shows subregion
The difference of the backlight value of N-1 display subregion, and the first display subregion and N-1 display point
The distance between area parameter, adjustment first shows the grey decision-making of subregion, first after being adjusted
The grey decision-making of subregion is shown, the first display subregion is each display point in N number of display subregion
Area.So as to pass through to adjust each grey decision-making for showing subregion so that the image face of liquid crystal display
Color can effectively solve the problem that the picture that liquid crystal display shows has asking for colour cast closer to reality
Topic.
Embodiment 3
The embodiment of the present invention provides a kind of liquid crystal display 30, as shown in figure 11, including：
Acquiring unit 301, for obtaining N number of ash for showing each display subregion in subregion
Rank is worth, and the N is the integer more than or equal to 1；
Setting unit 302, for according to each described ash for showing subregion in N number of display subregion
Rank value arranges the backlight value of corresponding backlight subarea；
Adjustment unit 303, for show according to described first the backlight value of subregion with except described the
One difference for showing the described backlight values for showing subregion of N-1 outside subregion, and described the
One shows the distance between subregion display subregion described with N-1 parameter, adjusts described first and shows
Show the grey decision-making of subregion, described first after being adjusted shows the grey decision-making of subregion, described the
One shows subregion for each display subregion in N number of display subregion.
Liquid crystal display provided in an embodiment of the present invention, first, in obtaining N number of display subregion
Each shows the grey decision-making of subregion；Then, according to each display subregion in N number of display subregion
Grey decision-making the backlight value of corresponding backlight subarea is set；According to the first backlight value for showing subregion
With the difference of the N-1 backlight value for showing subregion in addition to first shows subregion, and first
Show that subregion shows the distance between subregion parameter with N-1, adjustment first shows the ash of subregion
Rank is worth, the grey decision-making of the first display subregion after being adjusted, and the first display subregion is N
Each shows subregion in individual display subregion.So as to pass through to adjust each grey decision-making for showing subregion,
So that the color of image of liquid crystal display is closer to reality, can effectively solve the problem that liquid crystal display shows
There is colour cast in the picture for showing.
The adjustment unit 303 specifically for：
According to the described first backlight value for showing subregion and in addition to described first shows subregion
The difference of the N-1 backlight value for showing subregion, and the first display subregion and N-1
The distance between individual display subregion parameter acquiring backlight affects coefficient, the backlight to affect system
Count the backlight that the corresponding backlight subarea of subregion is shown described in the display by stages for representing adjacent
The difference relation of value, the backlight value of the corresponding backlight subarea of the display subregion is according to showing point
The backlight value of the corresponding backlight subarea of the display subregion that the grey decision-making in area is arranged, the backlight
Subregion is provided with backlight；
When the backlight affects coefficient to be more than preset value, reduce described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, reduces described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
When the backlight affects coefficient to be less than preset value, increase described first and show the red of subregion
Grey decision-making, described first after being adjusted shows the red grey decision-making of subregion, increase described first
The green grey decision-making of subregion is shown, described first after being adjusted shows the green grey decision-making of subregion；
Wherein, the grey decision-making for showing subregion includes red grey decision-making, green grey decision-making and bluish grey rank
Value.
The adjustment unit 303 specifically for：
Obtain the described first backlight value for showing subregion and in addition to described first shows subregion
Each shows the difference of the backlight value of subregion in the N-1 backlight value for showing subregion, obtains
N-1 difference；
The product of each difference and respective distances parameter is obtained, N-1 product value, the correspondence is obtained
Distance parameter is to obtain the difference in the described first display subregion display subregion described with N-1
The distance between the display subregion of value parameter；
The backlight shadow is obtained according to the N-1 product value and display subregion distance influence factor
Ring coefficient.
The acquiring unit 301, is additionally operable to：
Show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to described first；
Obtaining the backlight affects ratio, the institute of coefficient and the backlight value of the described first display subregion
That states regulation coefficient and 255 product rounds value.
The adjustment unit 303 specifically for：
The described first red grey decision-making for showing subregion is reduced according to the value that rounds, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value reduce it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion；
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, according to it is described round value increase it is described first display
The green grey decision-making of subregion, described first after being adjusted shows the green grey decision-making of subregion.
The adjustment unit 303 specifically for：
When the red grey decision-making of the first display subregion is 255,
The green grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion green grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion；
When the green grey decision-making of the first display subregion is 255,
The red grey decision-making that value increase described first shows subregion is rounded according to described, after being adjusted
It is described first show subregion red grey decision-making, reduce it is described first show subregion bluish grey rank
Value, described first after being adjusted shows the blue grey decision-making of subregion.
Those skilled in the art can be understood that, for convenience and simplicity of description,
The device of foregoing description and the specific work process of unit, in may be referred to preceding method embodiment
Corresponding process, will not be described here.
Each functional unit in each embodiment of the invention can be integrated in a processing unit
In, or the independent physics of unit include, it is also possible to two or more unit collection
Into in a unit.Above-mentioned integrated unit both can be realized in the form of hardware, also might be used
Realize in the form of SFU software functional unit with being added using hardware.Of the present invention first obtains single
Each function of unit, second acquisition unit, adjustment unit and the 3rd acquiring unit can be by difference
Integrated circuit (English full name：Integrated circuit, English abbreviation：IC) realize,
Can be realized by an integrated circuit.
One of ordinary skill in the art will appreciate that：Realize whole or the portion of said method embodiment
Can be completed by the related hardware of programmed instruction step by step, aforesaid program can be stored in
In one computer read/write memory medium, upon execution, execution includes said method reality to the program
The step of applying；And aforesaid storage medium includes：Read-only storage (Read-Only
Memory, ROM), random access memory (Random-Access Memory, RAM),
Magnetic disc or CD etc. are various can be with the medium of store program codes.
The above, specific embodiment only of the invention, but protection scope of the present invention is simultaneously
Be not limited to this, any those familiar with the art the invention discloses technology model
In enclosing, change or replacement can be readily occurred in, all should be included within the scope of the present invention.
Therefore, protection scope of the present invention should be defined by the scope of the claims.
Claims (12)
1. a kind of image processing method, it is characterised in that be applied to liquid crystal display, including：
N number of grey decision-making for showing each display subregion in subregion is obtained, the N is more than or equal to 1
Integer；
Corresponding backlight subarea is arranged according to each described grey decision-making for showing subregion in N number of display subregion
Backlight value；
According to the described first backlight value for showing subregion and the N-1 institute in addition to described first shows subregion
The difference of the backlight value for showing subregion is stated, and described first shows subregion with the N-1 display subregion
The distance between parameter, adjust it is described first show subregion grey decision-making, described first after being adjusted
The grey decision-making of subregion is shown, described first shows subregion for each display subregion in N number of display subregion.
2. method according to claim 1, it is characterised in that described to show point according to described first
The difference of the backlight value in the area backlight value for showing subregion individual with the N-1 in addition to described first shows subregion
Value, and the distance between the first display subregion and the individual display subregions of N-1 parameter, adjust institute
Stating the grey decision-making of the first display subregion includes：
According to the described first backlight value for showing subregion and the N-1 institute in addition to described first shows subregion
The difference of the backlight value for showing subregion is stated, and described first shows subregion with the N-1 display subregion
The distance between parameter acquiring backlight affect coefficient, the backlight to affect coefficient to be used to represent adjacent display
The difference relation of the backlight value of the corresponding backlight subarea of subregion, the display subregion pair are shown described in by stages
The backlight value of the backlight subarea answered is corresponding according to the display subregion of the grey decision-making setting for showing subregion
The backlight value of backlight subarea, the backlight subarea is provided with backlight；
When the backlight affects coefficient to be more than preset value, reduce the described first red grey decision-making for showing subregion,
After being adjusted described first shows the red grey decision-making of subregion, reduces the described first ashy green for showing subregion
Rank is worth, and described first after being adjusted shows the green grey decision-making of subregion；
When the backlight affects coefficient to be less than preset value, increase the described first red grey decision-making for showing subregion,
After being adjusted described first shows the red grey decision-making of subregion, increases the described first ashy green for showing subregion
Rank is worth, and described first after being adjusted shows the green grey decision-making of subregion；
Wherein, the grey decision-making for showing subregion includes red grey decision-making, green grey decision-making and blue grey decision-making.
3. method according to claim 2, it is characterised in that described to show point according to described first
The difference of the backlight value in the area backlight value for showing subregion individual with the N-1 in addition to described first shows subregion
Value, and the distance between the first display subregion and the individual display subregions of N-1 parameter acquiring backlight
Coefficient is affected to include：
Obtain the described first backlight value for showing subregion and the N-1 institute in addition to described first shows subregion
The difference of the backlight value of each display subregion in the backlight value for showing subregion is stated, N-1 difference is obtained；
The product of each difference and respective distances parameter is obtained, N-1 product value, the respective distances ginseng is obtained
Number for the described first display subregion and N-1 it is described show obtain in subregion the difference display subregion it
Between distance parameter；
Obtaining the backlight according to the N-1 product value and display subregion distance influence factor affects coefficient.
4. according to the method in claim 2 or 3, it is characterised in that affect in the acquisition backlight
After coefficient, methods described also includes：
Show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to described first；
Obtaining the backlight affects ratio, the adjustment of coefficient and the backlight value of the described first display subregion
Coefficient and 255 product round value.
5. method according to claim 4, it is characterised in that
Described to reduce the described first red grey decision-making for showing subregion, described first after being adjusted shows divides
The red grey decision-making in area, reduces the described first green grey decision-making for showing subregion, described first after being adjusted
Showing the green grey decision-making of subregion includes：
The described first red grey decision-making for showing subregion is reduced according to the value that rounds, it is described after being adjusted
The first red grey decision-making for showing subregion, according to the value that rounds the described first ashy green rank for showing subregion is reduced
Value, described first after being adjusted shows the green grey decision-making of subregion；
The increase described first shows the red grey decision-making of subregion, and described first after being adjusted shows divides
The red grey decision-making in area, increases the described first green grey decision-making for showing subregion, described first after being adjusted
Showing the green grey decision-making of subregion includes：
It is described after being adjusted according to the red grey decision-making for rounding value increase the first display subregion
The first red grey decision-making for showing subregion, according to described the ashy green rank that value increase described first shows subregion is rounded
Value, described first after being adjusted shows the green grey decision-making of subregion.
6. method according to claim 4, it is characterised in that when the backlight affects coefficient to be less than
Preset value, methods described also includes：
When the red grey decision-making of the first display subregion is 255,
It is described after being adjusted according to the green grey decision-making for rounding value increase the first display subregion
The first green grey decision-making for showing subregion, reduces the described first blue grey decision-making for showing subregion, after being adjusted
It is described first show subregion blue grey decision-making；
When the green grey decision-making of the first display subregion is 255,
It is described after being adjusted according to the red grey decision-making for rounding value increase the first display subregion
The first red grey decision-making for showing subregion, reduces the described first blue grey decision-making for showing subregion, after being adjusted
It is described first show subregion blue grey decision-making.
7. a kind of liquid crystal display, it is characterised in that include：
Acquiring unit, it is described for obtaining N number of grey decision-making for showing each display subregion in subregion
N is the integer more than or equal to 1；
Setting unit, for arranging right according to each described grey decision-making for showing subregion in N number of display subregion
The backlight value of the backlight subarea answered；
Adjustment unit, for showing that the backlight value of subregion shows subregion with removing described first according to described first
Outside the described backlight values for showing subregion of N-1 difference, and described first show subregion and N-1
The distance between individual display subregion parameter, adjusts the described first grey decision-making for showing subregion, is adjusted
After whole described first shows the grey decision-making of subregion, and described first shows that subregion is N number of display subregion
In each show subregion.
8. liquid crystal display according to claim 7, it is characterised in that the adjustment unit is concrete
For：
According to the described first backlight value for showing subregion and the N-1 institute in addition to described first shows subregion
The difference of the backlight value for showing subregion is stated, and described first shows subregion with the N-1 display subregion
The distance between parameter acquiring backlight affect coefficient, the backlight to affect coefficient to be used to represent adjacent display
The difference relation of the backlight value of the corresponding backlight subarea of subregion, the display subregion pair are shown described in by stages
The backlight value of the backlight subarea answered is corresponding according to the display subregion of the grey decision-making setting for showing subregion
The backlight value of backlight subarea, the backlight subarea is provided with backlight；
When the backlight affects coefficient to be more than preset value, reduce the described first red grey decision-making for showing subregion,
After being adjusted described first shows the red grey decision-making of subregion, reduces the described first ashy green for showing subregion
Rank is worth, and described first after being adjusted shows the green grey decision-making of subregion；
When the backlight affects coefficient to be less than preset value, increase the described first red grey decision-making for showing subregion,
After being adjusted described first shows the red grey decision-making of subregion, increases the described first ashy green for showing subregion
Rank is worth, and described first after being adjusted shows the green grey decision-making of subregion；
Wherein, the grey decision-making for showing subregion includes red grey decision-making, green grey decision-making and blue grey decision-making.
9. liquid crystal display according to claim 8, it is characterised in that the adjustment unit is concrete
For：
Obtain the described first backlight value for showing subregion and the N-1 institute in addition to described first shows subregion
The difference of the backlight value of each display subregion in the backlight value for showing subregion is stated, N-1 difference is obtained；
The product of each difference and respective distances parameter is obtained, N-1 product value, the respective distances ginseng is obtained
Number for the described first display subregion and N-1 it is described show obtain in subregion the difference display subregion it
Between distance parameter；
Obtaining the backlight according to the N-1 product value and display subregion distance influence factor affects coefficient.
10. liquid crystal display according to claim 8 or claim 9, it is characterised in that the acquisition list
Unit, is additionally operable to：
Show that the grey decision-making and gamma curve of subregion obtain regulation coefficient according to described first；
Obtaining the backlight affects ratio, the adjustment of coefficient and the backlight value of the described first display subregion
Coefficient and 255 product round value.
11. liquid crystal displays according to claim 10, it is characterised in that the adjustment unit tool
Body is used for：
The described first red grey decision-making for showing subregion is reduced according to the value that rounds, it is described after being adjusted
The first red grey decision-making for showing subregion, according to the value that rounds the described first ashy green rank for showing subregion is reduced
Value, described first after being adjusted shows the green grey decision-making of subregion；
It is described after being adjusted according to the red grey decision-making for rounding value increase the first display subregion
The first red grey decision-making for showing subregion, according to described the ashy green rank that value increase described first shows subregion is rounded
Value, described first after being adjusted shows the green grey decision-making of subregion.
12. liquid crystal displays according to claim 10, it is characterised in that the adjustment unit tool
Body is used for：
When the red grey decision-making of the first display subregion is 255,
It is described after being adjusted according to the green grey decision-making for rounding value increase the first display subregion
The first green grey decision-making for showing subregion, reduces the described first blue grey decision-making for showing subregion, after being adjusted
It is described first show subregion blue grey decision-making；
When the green grey decision-making of the first display subregion is 255,
It is described after being adjusted according to the red grey decision-making for rounding value increase the first display subregion
The first red grey decision-making for showing subregion, reduces the described first blue grey decision-making for showing subregion, after being adjusted
It is described first show subregion blue grey decision-making.
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| CN111009208B (en) * | 2019-12-27 | 2021-07-06 | Tcl华星光电技术有限公司 | Optimization method of panel display, display panel and storage medium |
| CN111009208A (en) * | 2019-12-27 | 2020-04-14 | Tcl华星光电技术有限公司 | Optimization method of panel display, display panel and storage medium |
| CN114141188A (en) * | 2021-12-07 | 2022-03-04 | Tcl华星光电技术有限公司 | Display device driving method and display device |
| CN114141188B (en) * | 2021-12-07 | 2023-10-13 | Tcl华星光电技术有限公司 | Display device driving method and display device |
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