CN105719611B - The show uniformity method of adjustment and device of liquid crystal display - Google Patents
The show uniformity method of adjustment and device of liquid crystal display Download PDFInfo
- Publication number
- CN105719611B CN105719611B CN201610194644.8A CN201610194644A CN105719611B CN 105719611 B CN105719611 B CN 105719611B CN 201610194644 A CN201610194644 A CN 201610194644A CN 105719611 B CN105719611 B CN 105719611B
- Authority
- CN
- China
- Prior art keywords
- image
- displayed frame
- brightness
- threshold
- pixel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000012937 correction Methods 0.000 claims description 92
- 230000000007 visual effect Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241001269238 Data Species 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of show uniformity method of adjustment of liquid crystal display and device, this method include：Detection obtains the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display；According to the original brightness of above-mentioned ambient brightness and the image to be displayed frame, the regulation coefficient of image to be displayed frame is obtained, and adjusts the original gray-scale value of the image to be displayed frame according to above-mentioned regulation coefficient.Pass through the original brightness according to ambient brightness under varying environment and image to be displayed frame, to be dynamically determined regulation coefficient, to adjust the original gray-scale value of image to be displayed frame, it is uneven to reduce display for the good coefficient of middle preset in advance compared to the prior art, realizing dynamic control reduces the non-uniform degree of display, while the brightness for reducing displayed image as far as possible is lost, user is allowed to be not easy to experience the uneven visual experience for preferably meeting user of display of displayed image picture on liquid crystal display.
Description
Technical field
The present invention relates to the show uniformity method of adjustment of LCD technology more particularly to a kind of liquid crystal display and
Device.
Background technology
Currently, liquid crystal display is generally used light emitting diode (Light Emitting Diode, abbreviation LED) work
For backlight, and mainly liquid crystal display panel is illuminated using direct-type backlight technology or side entrance back technology, to realize picture
The display in face.But due to the quality problem of diaphragm between LED luminance unevenness or LED and liquid crystal display panel, often cause to show
Show that the problem of showing uneven (mura) occurs in the picture that panel is presented.
In the prior art, in order to reduce the non-uniform problem of display, LED or matter is selected with mainly selecting better quality
Amount preferably diaphragm, it is uneven to reduce display as far as possible.But liquid crystal display can be greatly increased using the method for the prior art
The manufacturing cost of equipment.Further, in order to improve the show uniformity of liquid crystal apparatus, software approach method also can be used, i.e.,：
The brightness that the high-brightness region of liquid crystal display is reduced by image gray-scale level brightness adjustment improves brightness uniformity mesh to reach
, although brightness uniformity increases after adjustment, the overall brightness of display image then has greater loss, therefore, take into account
Brightness and show uniformity are a technical problem to be solved urgently.
Invention content
The present invention provides a kind of the show uniformity method of adjustment and device of liquid crystal display, how to be taken into account for solving
The problem of brightness and show uniformity.
First aspect present invention provides a kind of show uniformity method of adjustment of liquid crystal display, including：
Detection obtains the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display；
According to the original brightness of the ambient brightness and the image to be displayed frame, the tune of the image to be displayed frame is determined
Integral coefficient；
The original gray-scale value of the image to be displayed frame is adjusted according to the regulation coefficient.
Second aspect of the present invention provides a kind of show uniformity adjusting apparatus of liquid crystal display, including：
Detection module, the original brightness for detecting the ambient brightness and image to be displayed frame that obtain liquid crystal display；
Acquisition module determines described to be shown according to the original brightness of the ambient brightness and the image to be displayed frame
The regulation coefficient of picture frame；
Module is adjusted, the original gray-scale value of the image to be displayed frame is adjusted according to the regulation coefficient.
In the show uniformity method of adjustment and device of liquid crystal display provided by the invention, detection obtains liquid crystal display
The original brightness of the ambient brightness and image to be displayed frame of equipment, and then according to the original of the ambient brightness and image to be displayed frame
Brightness determines regulation coefficient, and the original gray-scale value of image to be displayed frame is adjusted according to regulation coefficient, that is, considers user and exist
Without the difference of visual experience under ambient brightness, according to the original brightness of ambient brightness under varying environment and image to be displayed frame,
Be dynamically determined regulation coefficient, to adjust the original gray-scale value of image to be displayed frame, compared to the prior art in preset in advance it is good
Coefficient reduction display is uneven, and realizing dynamic control reduces the non-uniform degree of display, is reducing displayed image as far as possible
Brightness while lose, make the display that user is not easy to experience displayed image picture on liquid crystal display uneven,
To under the premise of not improving liquid crystal display cost, preferably meet the visual experience of user.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow signal of the show uniformity method of adjustment embodiment one of liquid crystal display provided by the invention
Figure；
Fig. 2 is the flow signal of the show uniformity method of adjustment embodiment two of liquid crystal display provided by the invention
Figure；
Fig. 3 is the flow signal of the show uniformity method of adjustment embodiment three of liquid crystal display provided by the invention
Figure；
The image to be displayed frame that Fig. 4 is applied by the show uniformity method of adjustment of liquid crystal display provided by the invention
Schematic diagram；
The image to be displayed frame that Fig. 5 is applied by the show uniformity method of adjustment of liquid crystal display provided by the invention
Schematic diagram；
Fig. 6 is the structural representation of the show uniformity adjusting apparatus embodiment one of liquid crystal display provided by the invention
Figure；
Fig. 7 is the structural representation of the show uniformity adjusting apparatus embodiment two of liquid crystal display provided by the invention
Figure.
Specific implementation mode
Find that when ambient brightness is higher, such as user is in brighter environment, right according to the visual experience of user
Show it is uneven insensitive, and to display brightness need it is higher, then excessively should not adjust uniformity and brightness is caused to reduce；Work as ring
When border brightness is relatively low, such as user to showing uneven sensitivity, and then reduces brightness demand in darker environment,
It needs emphasis to reduce and shows non-uniform problem.It is uneven to reduce display usually to preset correction coefficient in the prior art,
That is each pixel corresponds to a correction coefficient to correct grayscale value, and the embodiment of the present invention is by detecting ambient brightness and shown
The brightness of picture dynamically to adjust the grayscale value of displayed image, such as dynamically carries out secondary school on the basis of correction coefficient
Just etc., it experiences that display is uneven to be avoided as much as user, while user also being avoided to experience the loss of brightness as possible,
Accomplish preferably to trade off between show uniformity and brightness, promotes the visual experience of user.
Liquid crystal display involved in the embodiment of the present invention can be LCD TV, but be not limited thereto.
Fig. 1 is the flow signal of the show uniformity method of adjustment embodiment one of liquid crystal display provided by the invention
Figure, as shown in Figure 1, this method includes：
S101, detection obtain the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display.
Ambient brightness refers to the brightness that liquid crystal display is presently in environment, such as in user family, liquid crystal display
Positioned at the parlor of user, then the average brightness in ambient brightness, that is, parlor.Specifically, the brightness of liquid crystal display can be passed through
The detections such as detection device obtain.
In addition, the image frame shown on liquid crystal display is all made of multiframe, carried out as unit of frame bright
Degree considers, while detecting ambient brightness, also detects the brightness of each frame image.The original brightness of image to be displayed frame, can
To combine gamma (gamma) curve of this frame image to obtain by the average gray-scale value of this frame image, but not limited to this.Its
Middle gamma is derived from the response curve of liquid crystal display, can be used for embodying the nonlinear dependence of brightness and input voltage
System.
S102, according to the original brightness of above-mentioned ambient brightness and above-mentioned image to be displayed frame, determine above-mentioned image to be displayed
The regulation coefficient of frame.
The original brightness of ambient brightness and image to be displayed frame is considered to be dynamically determined regulation coefficient, for example, ring
When border brightness is higher, user is uneven to the display of displayed image on liquid crystal display insensitive, can be considered with emphasis bright
Degree.But not limited to this, is mainly traded off according to the brightness of ambient brightness and image to be displayed frame script, reduces user's sense
By the non-uniform degree of display.It, can be by tabling look-up for the original brightness of different ambient brightness and image to be displayed frame
Corresponding regulation coefficient is obtained, preset algorithm can also be used to calculate corresponding regulation coefficient, this is not restricted.
S103, the original gray-scale value that above-mentioned image to be displayed frame is adjusted according to above-mentioned regulation coefficient.
It is found during practical adjustment, the show uniformity of liquid crystal display displayed image and the size of grayscale value have
There is great correlation, by adjusting the grayscale value of every frame image, the non-uniform problem of display can be effectively improved, but grayscale
Value will have a direct impact on the brightness of liquid crystal display displayed image again.Obtain the original of ambient brightness and image to be displayed frame
After brightness, it is dynamically determined regulation coefficient, and be adjusted to the original gray-scale value of picture frame to be shown according to regulation coefficient, controlled
The degree for showing uneven (demura) is reduced, to realize that the image finally shown on liquid crystal display allows user as far as possible
It is not felt by and shows brightness that is uneven, while also ensureing displayed image as possible.
In the present embodiment, detection obtains the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display, into
And regulation coefficient is determined according to the original brightness of the ambient brightness and image to be displayed frame, and wait showing to adjust according to regulation coefficient
Show the original gray-scale value of picture frame, that is, considers user in the difference without visual experience under ambient brightness, according to varying environment
The original brightness of lower ambient brightness and image to be displayed frame, to be dynamically determined regulation coefficient, to adjust the original of image to be displayed frame
Beginning grayscale value, the good coefficient reduction display of middle preset in advance is uneven compared to the prior art, and realizing dynamic control reduces display
Non-uniform degree allows user to be not easy to experience liquid crystal while the brightness for reducing displayed image as far as possible is lost
Show that the display of displayed image picture in equipment is uneven, thus under the premise of not improving liquid crystal display cost, more preferably
Ground meets the visual experience of user.
According to the original brightness of above-mentioned ambient brightness and above-mentioned image to be displayed frame, the tune of above-mentioned image to be displayed frame is determined
Integral coefficient, can be according to ambient brightness, image to be displayed frame original brightness and the image to be displayed frame in each pixel
The correction coefficient of point, obtains the regulation coefficient of each pixel in the image to be displayed frame.
Wherein, correction coefficient can be preconfigured for reducing non-uniform coefficient is shown, that is, pass through correction coefficient
Adjusting grayscale value, to reduce display uneven, in the present embodiment, according to the original of above-mentioned ambient brightness and above-mentioned image to be displayed frame
Brightness carries out secondary correction on the basis of correction coefficient, i.e., further obtains regulation coefficient to adjust grayscale value.
Optionally, when ambient brightness is larger, for example, ambient brightness be greater than or equal to third threshold value when, image to be displayed frame
In the regulation coefficient of each pixel be greater than or equal to the correction coefficient of corresponding pixel points, you can reduce display not to properly increase
Uniform degree or holding, which reduce, shows non-uniform degree.It specifically can be further combined with the original of image to be displayed frame
Brightness determines, but is not limited thereto.
Further, when above-mentioned ambient brightness is greater than or equal to third threshold value, each pixel in image to be displayed frame
Regulation coefficient is greater than or equal to the correction coefficient of corresponding pixel points, may include：
1) when ambient brightness is more than the original brightness of first threshold and above-mentioned image to be displayed frame more than second threshold,
The regulation coefficient of each pixel is identical as the correction coefficient of corresponding pixel points in image to be displayed frame.
In the case where ambient brightness is larger, the display that user is not easy to experience on liquid crystal display is uneven, and
And the original brightness of image to be displayed frame at this time is also larger, then show uniformity can be adjusted i.e. according to conventional degree
Can, no longer enhancing reduces the non-uniform degree that shows, this is not restricted for certainly specific adjustment degree, can be according to product sheet
Body is set.
2) when ambient brightness is more than the original brightness of first threshold and above-mentioned image to be displayed frame less than second threshold,
The regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in image to be displayed frame.
When i.e. larger in ambient brightness but image to be displayed frame original brightness is smaller, figure to be shown can be considered with emphasis
As the show uniformity of frame, you can reduced with appropriate enhancing and show non-uniform degree.
3) ambient brightness be greater than or equal to third threshold value and less than or equal to first threshold, image to be displayed frame it is original
When brightness is more than second threshold, the correction coefficient phase of the regulation coefficient and corresponding pixel points of each pixel in image to be displayed frame
Together.
When i.e. ambient brightness is moderate but the original brightness of image to be displayed is larger, so that it may to be adjusted according to conventional degree
Show uniformity, no longer enhancing reduce the non-uniform degree that shows, this is not restricted for specific adjustment degree, Ke Yigen
It is set according to product itself.
4) ambient brightness be greater than or equal to third threshold value and less than or equal to first threshold, image to be displayed frame it is original
When brightness is less than second threshold, the regulation coefficient of each pixel is more than the correction system of corresponding pixel points in image to be displayed frame
Number.
When ambient brightness is moderate, image to be displayed frame original brightness is also smaller, image to be displayed frame can be considered with emphasis
Show uniformity, it is appropriate reinforce reducing show non-uniform degree.
Above-mentioned third threshold value is less than first threshold, and above-mentioned each threshold value is not limited thereto, can according to specific local specialties into
Row configuration.
In addition, on the basis of the above embodiments, when ambient brightness is smaller, further according to the original of image to be displayed frame
Beginning luminance dynamic determines regulation coefficient：
1) when ambient brightness is less than the original brightness of third threshold value and above-mentioned image to be displayed frame more than second threshold,
The regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points in image to be displayed frame.
I.e. ambient brightness is smaller but in the case that the original brightness of image to be displayed frame is larger, then can be examined with emphasis
Consider brightness, appropriate reduce reduces the non-uniform degree of display.
2) when ambient brightness is less than the original brightness of third threshold value and above-mentioned image to be displayed frame less than second threshold,
The regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in image to be displayed frame.
I.e. when ambient brightness is smaller, original brightness of image to be displayed frame is also smaller, user is easier to experience liquid crystal
Show that the display of shown picture in equipment is uneven, then emphasis considers the show uniformity of image to be displayed frame, you can with
It is appropriate to reinforce reducing the non-uniform degree of display.
Certainly, it is not limited with above-described embodiment, the brightness of image to be displayed frame can be adjusted according to actual conditions
Weight and above-mentioned show uniformity weight.
Fig. 2 is the flow signal of the show uniformity method of adjustment embodiment two of liquid crystal display provided by the invention
Figure, on the basis of the above embodiments, as shown in Fig. 2, it is above-mentioned according to ambient brightness, image to be displayed frame original brightness, with
And in the image to be displayed frame each pixel correction coefficient, obtain the adjustment system of each pixel in the image to be displayed frame
It counts, may include：
S201, according to the original brightness of above-mentioned ambient brightness and above-mentioned image to be displayed frame, obtain the image to be displayed frame
Adjustment weight.
In general, image to be displayed frame corresponds to an adjustment weight, i.e. each pixel of image to be displayed frame corresponds to
Adjustment weight it is identical.
S202, according to each pixel in the corresponding adjustment weight of above-mentioned image to be displayed frame and the image to be displayed frame
Corresponding correction coefficient determines the regulation coefficient of each pixel in the image to be displayed frame.
Above-mentioned correction coefficient can obtain by searching for preset correction coefficient table, be not limited, can also lead to certainly
Parameter preset is crossed to be calculated in real time.
Each corresponding correction coefficient of pixel is for correcting the original gray-scale value of each pixel to reduce display not
Uniformly, can as the case may be to original gray-scale value be multiplied by correction coefficient or plus correction coefficient, subtract correction coefficient
Deng this is not restricted.
In the present embodiment, according to actual environment and the original brightness of image to be displayed frame, adjustment weight is further obtained,
Further correction can be made to the correction coefficient of each pixel by the adjustment weight, obtain the final adjustment of each pixel
Coefficient, then actually corrects the original gray-scale value of each pixel by adjusting coefficient, it is also possible to be to original gray-scale value
Be multiplied by regulation coefficient or plus regulation coefficient, subtract correction coefficient etc., this is not restricted.
For being multiplied by regulation coefficient, it is assumed that the original gray-scale value of pixel i is xi, corresponding correction coefficient is ai, pixel
The regulation coefficient of the adjustment weight k of the affiliated image to be displayed frames of point i, the pixel are kai, then the pixel after final adjustment
The grayscale value of point i is denoted as xi', xi'=kai·xi。
For example, the case where being more than correction coefficient for regulation coefficient, it is assumed that certain of image to be displayed frame is calculated
The corresponding correction coefficient of a pixel is a, and the weight of the brightness of the image to be displayed frame is less than the weight of above-mentioned show uniformity,
An adjustment weight more than 1 can be preset, to be multiplied by original correction coefficient a, such as it is 1.2 to take adjustment weight k, is adjusted
Integral coefficient is 1.2a.But not limited to this, and an adjustment weight can also be added to a.
For example, the case where being less than correction coefficient for regulation coefficient, it is assumed that certain of image to be displayed frame is calculated
The corresponding correction coefficient of a pixel is a, and the weight of the brightness of the image to be displayed frame is more than the weight of above-mentioned show uniformity,
An adjustment weight less than 1 can be preset, to be multiplied by original correction coefficient a, such as it is 0.7 to take adjustment weight k, is adjusted
Integral coefficient is 0.7a.But not limited to this, and an adjustment weight can also be subtracted to a.
The corresponding adjustment weight k of above-mentioned image to be displayed frame, can specifically include following situation：
1) when ambient brightness is more than the original brightness of first threshold and above-mentioned image to be displayed frame more than second threshold, k
=1.
2) when ambient brightness is more than the original brightness of first threshold and above-mentioned image to be displayed frame less than second threshold, k
=k1>1。
3) ambient brightness be greater than or equal to third threshold value and less than or equal to first threshold, image to be displayed frame it is original
When brightness is less than second threshold, k=k2>1。
4) ambient brightness be greater than or equal to third threshold value and less than or equal to first threshold, image to be displayed frame it is original
When brightness is more than second threshold, k=1.
5) ambient brightness be greater than or equal to third threshold value and less than or equal to first threshold, image to be displayed frame it is original
When brightness is less than second threshold, k=k3>1。
6) when ambient brightness is less than the original brightness of third threshold value and above-mentioned image to be displayed frame more than second threshold, k
=k4<1。
According to the bright dark degree of ambient brightness, it may be determined that k3>k2>k1>1>k4。
Certainly, it is not limited with above-mentioned example, can be specifically limited as the case may be.
Fig. 3 is the flow signal of the show uniformity method of adjustment embodiment three of liquid crystal display provided by the invention
Figure, Fig. 4 are luminance filtering template schematic diagram in the show uniformity method of adjustment of liquid crystal display provided by the invention, Fig. 5
The image to be displayed frame schematic diagram applied by the show uniformity method of adjustment of liquid crystal display provided by the invention.
As shown in figure 3, before above-mentioned S202, can also include：
S301, the corresponding correction coefficient table of above-mentioned image to be displayed frame is obtained.
Correction coefficient and at least one predeterminable area of the image to be displayed frame in the correction coefficient table correspond,
In the predeterminable area include at least one pixel.
, can be according to the size of liquid crystal display displayed image in order to save memory space during specific implementation, it will
Display panel is preset as multiple regions, and each region corresponds to a correction coefficient.
It specifically, can be according to the distribution of LED light in liquid crystal display, the resolution ratio, supported slow of display module
Space size is deposited to determine suitable region quantity.
The correction coefficient in each region can be the object brightness and whole region according to each grayscale in the region
Object brightness obtain.
It illustrates, it is assumed that current liquid crystal shows that equipment uses 2 × 6 distributions, high-resolution for 32 cun of liquid crystal modules, LED
(High Definition, abbreviation HD), spatial cache is smaller, thus is rule of thumb divided into 13 × 44 regions (block),
After cutting marginal portion, each region includes 37 × 20 pixels, that is, includes 37 × 20 brightness datas.
In turn, the original brightness in each region is denoted as LO, can specifically be obtained by the average value of 37 × 20 brightness datas
, median is selected after 37 × 20 brightness datas can also sort, this is not restricted；Then the mesh in each region is calculated
Brightness is marked, specifically, by taking first area as an example, obtains the histogram of the brightness data of all pixels point in first area, cut-off
Brightness of the brightness accounting in preset range (such as between 90%-100%), is denoted as L in square figureh, the weight of A% is assigned, and
Calculate the average brightness L of first areaa, the weight of (1-A) % is assigned, and then according to formula：LT1=Lh× A%+La×(1-
A) % calculates the preset target brightness L of the first areaT1, other regions similarly calculate.Wherein A% can rule of thumb value,
Such as 50% is taken, this is not restricted.
The preset target brightness in each region is filtered, until meeting preset condition, obtains the reality in each region
Object brightness LT2, wherein Filtering Template can be the matrix for including multiple regions, with reference to Fig. 4, such as select the matrix of 3*3, should
The Filtering Template 04 of 3*3 moves on image to be displayed frame (generous collimation mark knows image to be displayed frame), obtains the bright of different location
Angle value, the preset condition are：A) Filtering Template corresponding first template region center O1 brightness values and the O1 institute it is adjacent 1,2,
3, the deviation range between the brightness value of 4,5,6,7,8 positions meets predetermined threshold value；B) the corresponding any two mould of Filtering Template
The deviation range of the center brightness value in plate area meets in predetermined threshold value, such as Fig. 4 between O1 brightness values and O2 brightness values
Deviation range meets predetermined threshold value.The center brightness value and adjacent position namely obtained in filter module moving process is bright
The deviation of angle value will meet predetermined threshold value, and the deviation of luminance values of the center in any two area obtained in moving process is full
Sufficient predetermined threshold value.
Finally, by LOAnd LT2Be converted to grayscale value GOAnd GT2, specific transfer process may be used the prior art, do not make herein
Limitation, then the correction coefficient of first area can be GT2/GO。
In order to enable subsequent adjust the actual conditions for more meeting image, it, can also be simple again after obtaining correction coefficient table
Adjustment, such as in order to avoid the grayscale value of certain pixels after adjustment overflows and (is more than 255), for natively larger grayscale value
Corresponding correction coefficient is limited, and as being more than 64 more than grayscale value, correction coefficient is not more than predetermined threshold value, does not make herein
It is specific to limit.
S302, it is according to the corresponding correction of each pixel in the above-mentioned image to be displayed frame of above-mentioned correction coefficient table acquisition
Number.
If memory space is enough big, the corresponding correction system of each pixel can be directly stored in correction coefficient table
Number, then with regard to without carrying out S302.
The case where including multiple pixels for each region, can further calculate the corresponding correction of each pixel
Coefficient.Specifically, according to the correction coefficient of the pixel region and the correction coefficient of adjacent area, using bilinearity
Interpolation algorithm obtains the correction coefficient of the pixel.
As shown in figure 5, a certain frame image to be displayed of the liquid crystal display is divided into 9 regions, each region includes 4
A smaller subregion, such as intermediate region are divided into this 4 smaller regions A, B, C, D, some pixel is fallen in B, utilize
The correction coefficient in 2,3, the 5 adjacent regions of correction coefficient and B area of intermediate region oneself, using bilinear interpolation meter
The practical correction coefficient for calculating the pixel, is not limited certainly with the example, such as can also further be drawn using similar approach
Divide smaller region, until as unit of pixel.
Fig. 6 is the structural representation of the show uniformity adjusting apparatus embodiment one of liquid crystal display provided by the invention
Figure, which can be integrated in liquid crystal display, as shown in fig. 6, the device includes：Detection module 601, acquisition module
602 and adjustment module 603, wherein：
Detection module 601 is used to detect the original bright of the ambient brightness and image to be displayed frame for obtaining liquid crystal display
Degree.
Acquisition module 602 waits showing according to the original brightness of the ambient brightness and the image to be displayed frame described in determination
Show the regulation coefficient of picture frame.
Module 603 is adjusted, the original gray-scale value of the image to be displayed frame is adjusted according to the regulation coefficient.
In the present embodiment, detection obtains the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display, into
And regulation coefficient is determined according to the original brightness of the ambient brightness and image to be displayed frame, and wait showing to adjust according to regulation coefficient
Show the original gray-scale value of picture frame, that is, considers user in the difference without visual experience under ambient brightness, according to varying environment
The original brightness of lower ambient brightness and image to be displayed frame, to be dynamically determined regulation coefficient, to adjust the original of image to be displayed frame
Beginning grayscale value, the good coefficient reduction display of middle preset in advance is uneven compared to the prior art, and realizing dynamic control reduces display
Non-uniform degree allows user to be not easy to experience liquid crystal while the brightness for reducing displayed image as far as possible is lost
Show that the display of displayed image picture in equipment is uneven, thus under the premise of not improving liquid crystal display cost, more preferably
Ground meets the visual experience of user.
Specifically, acquisition module 602, be specifically used for according to the ambient brightness, the image to be displayed frame it is original bright
The correction coefficient of each pixel, obtains each pixel in the image to be displayed frame in degree and the image to be displayed frame
The regulation coefficient of point.
Optionally, when the ambient brightness is greater than or equal to third threshold value, each pixel in the image to be displayed frame
Regulation coefficient be greater than or equal to corresponding pixel points correction coefficient.
Further, when the ambient brightness is greater than or equal to third threshold value, each pixel in the image to be displayed frame
The regulation coefficient of point is greater than or equal to the correction coefficient of corresponding pixel points, specially：
When the ambient brightness is more than the original brightness of first threshold and the image to be displayed frame more than second threshold,
The regulation coefficient of each pixel is identical as the correction coefficient of corresponding pixel points in the image to be displayed frame, wherein described
Three threshold values are less than the first threshold；
The ambient brightness is more than first threshold and the original brightness of the image to be displayed frame is less than the second threshold
When, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in the image to be displayed frame；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, described to be shown
When the original brightness of picture frame is more than the second threshold, in the image to be displayed frame regulation coefficient of each pixel with it is right
Answer the correction coefficient of pixel identical；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, described to be shown
When the original brightness of picture frame is less than the second threshold, the regulation coefficient of each pixel is more than in the image to be displayed frame
The correction coefficient of corresponding pixel points.
Further, the ambient brightness is less than third threshold value and the original brightness of the image to be displayed frame is more than institute
When stating second threshold, the regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points in the image to be displayed frame；
The ambient brightness is less than the third threshold value and the original brightness of the image to be displayed frame is less than described second
When threshold value, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in the image to be displayed frame.
But it is not limited with the above embodiment.
Fig. 7 is the structural representation of the show uniformity adjusting apparatus embodiment two of liquid crystal display provided by the invention
Figure, on the basis of Fig. 6, which further includes：Correction module 701, for obtaining the corresponding correction of the image to be displayed frame
Coefficient table, the correction coefficient and at least one predeterminable area one of the image to be displayed frame in the correction coefficient table are a pair of
It answers, wherein the predeterminable area includes at least one pixel；The figure to be shown is obtained according to the correction coefficient table
As the corresponding correction coefficient of each pixel in frame.
The device is for executing preceding method embodiment, and implementing principle and technical effect are similar, and details are not described herein.
The present invention also provides a kind of liquid crystal display, including processor, the processor is for executing preceding method implementation
Example, implementing principle and technical effect are similar, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or unit
Letter connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) or processor (English：Processor this hair) is executed
The part steps of bright each embodiment the method.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory
(English：Read-Only Memory, referred to as：ROM), random access memory (English：Random Access Memory, letter
Claim：RAM), the various media that can store program code such as magnetic disc or CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of show uniformity method of adjustment of liquid crystal display, which is characterized in that including：
Detection obtains the original brightness of the ambient brightness and image to be displayed frame of liquid crystal display；
According to each picture in the ambient brightness, the original brightness of the image to be displayed frame and the image to be displayed frame
The correction coefficient of vegetarian refreshments obtains the regulation coefficient of each pixel in the image to be displayed frame；Wherein, the ambient brightness is small
It is each in the image to be displayed frame when original brightness of third threshold value and the image to be displayed frame is more than second threshold
The regulation coefficient of pixel is less than the correction coefficient of corresponding pixel points；The ambient brightness is less than the third threshold value and described
When the original brightness of image to be displayed frame is less than the second threshold, the adjustment system of each pixel in the image to be displayed frame
Correction coefficient of the number more than corresponding pixel points；
The original gray-scale value of the image to be displayed frame is adjusted according to the regulation coefficient.
2. according to the method described in claim 1, it is characterized in that, the ambient brightness be greater than or equal to third threshold value when, institute
The regulation coefficient for stating each pixel in image to be displayed frame is greater than or equal to the correction coefficient of corresponding pixel points.
3. according to the method described in claim 2, it is characterized in that, the ambient brightness be greater than or equal to third threshold value when, institute
The regulation coefficient for stating each pixel in image to be displayed frame is greater than or equal to the correction coefficient of corresponding pixel points, specially：
When the ambient brightness is more than the original brightness of first threshold and the image to be displayed frame more than the second threshold,
The regulation coefficient of each pixel is identical as the correction coefficient of corresponding pixel points in the image to be displayed frame, wherein described
Three threshold values are less than the first threshold；
When the ambient brightness is more than the original brightness of first threshold and the image to be displayed frame less than the second threshold,
The regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in the image to be displayed frame；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, the image to be displayed
When the original brightness of frame is more than the second threshold, the regulation coefficient of each pixel and corresponding picture in the image to be displayed frame
The correction coefficient of vegetarian refreshments is identical；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, the image to be displayed
The regulation coefficient of each pixel, which is more than, when the original brightness of frame is less than the second threshold, in the image to be displayed frame corresponds to
The correction coefficient of pixel.
4. according to claim 1-3 any one of them methods, which is characterized in that the method further includes：
The corresponding correction coefficient table of the image to be displayed frame is obtained, the correction coefficient in the correction coefficient table waits showing with described
Show that at least one predeterminable area of picture frame corresponds, wherein the predeterminable area includes at least one pixel；
The corresponding correction coefficient of each pixel in the image to be displayed frame is obtained according to the correction coefficient table.
5. a kind of show uniformity adjusting apparatus of liquid crystal display, which is characterized in that including：
Detection module, the original brightness for detecting the ambient brightness and image to be displayed frame that obtain liquid crystal display；
Acquisition module, for according to the ambient brightness, the original brightness of the image to be displayed frame and the figure to be shown
As the correction coefficient of each pixel in frame, the regulation coefficient of each pixel in the image to be displayed frame is obtained；Wherein, institute
It is described to be shown when stating ambient brightness and being more than second threshold less than the original brightness of third threshold value and the image to be displayed frame
The regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points in picture frame；The ambient brightness is less than the third
When the original brightness of threshold value and the image to be displayed frame is less than the second threshold, each picture in the image to be displayed frame
The regulation coefficient of vegetarian refreshments is more than the correction coefficient of corresponding pixel points；
Module is adjusted, the original gray-scale value of the image to be displayed frame is adjusted according to the regulation coefficient.
6. device according to claim 5, which is characterized in that when the ambient brightness is greater than or equal to third threshold value, institute
The regulation coefficient for stating each pixel in image to be displayed frame is greater than or equal to the correction coefficient of corresponding pixel points.
7. device according to claim 5, which is characterized in that when the ambient brightness is greater than or equal to third threshold value, institute
The regulation coefficient for stating each pixel in image to be displayed frame is greater than or equal to the correction coefficient of corresponding pixel points, specially：
When the ambient brightness is more than the original brightness of first threshold and the image to be displayed frame more than the second threshold,
The regulation coefficient of each pixel is identical as the correction coefficient of corresponding pixel points in the image to be displayed frame, wherein described
Three threshold values are less than the first threshold；
When the ambient brightness is more than the original brightness of first threshold and the image to be displayed frame less than the second threshold,
The regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points in the image to be displayed frame；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, the image to be displayed
When the original brightness of frame is more than the second threshold, the regulation coefficient of each pixel and corresponding picture in the image to be displayed frame
The correction coefficient of vegetarian refreshments is identical；
The ambient brightness is greater than or equal to the third threshold value and less than or equal to the first threshold, the image to be displayed
The regulation coefficient of each pixel, which is more than, when the original brightness of frame is less than the second threshold, in the image to be displayed frame corresponds to
The correction coefficient of pixel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194644.8A CN105719611B (en) | 2016-03-30 | 2016-03-30 | The show uniformity method of adjustment and device of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194644.8A CN105719611B (en) | 2016-03-30 | 2016-03-30 | The show uniformity method of adjustment and device of liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105719611A CN105719611A (en) | 2016-06-29 |
| CN105719611B true CN105719611B (en) | 2018-08-07 |
Family
ID=56159386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194644.8A Active CN105719611B (en) | 2016-03-30 | 2016-03-30 | The show uniformity method of adjustment and device of liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105719611B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106603929B (en) | 2017-02-08 | 2021-03-23 | 惠州Tcl移动通信有限公司 | Screen light supplementing photographing method and system based on mobile terminal |
| CN108962185B (en) * | 2017-05-22 | 2020-05-29 | 京东方科技集团股份有限公司 | Method for reducing display image brightness, device thereof and display device |
| CN107993616B (en) * | 2017-12-27 | 2020-01-03 | 武汉华星光电技术有限公司 | Image display method and device |
| US10600377B2 (en) | 2017-12-27 | 2020-03-24 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Image display method and device of determining backlight coefficient according to grayscale eigenvalues corresponding to pixels in different partition |
| CN110310230A (en) * | 2018-03-20 | 2019-10-08 | 福建华佳彩有限公司 | A kind of demura hardware implementation method for saving hardware memory space |
| CN108766372B (en) * | 2018-04-28 | 2020-12-01 | 咸阳彩虹光电科技有限公司 | Method for improving mura phenomenon of display panel |
| CN108810318B (en) * | 2018-06-11 | 2020-12-04 | 京东方科技集团股份有限公司 | Image processing method, image processing device, display device and computer storage medium |
| CN109256101A (en) * | 2018-10-18 | 2019-01-22 | 武汉华星光电半导体显示技术有限公司 | Driving voltage compensation method, gray level compensation method and display device |
| CN109509461B (en) * | 2018-12-19 | 2020-11-06 | 惠科股份有限公司 | Brightness adjusting method and device of display panel |
| CN111832249B (en) * | 2019-04-11 | 2024-10-01 | 珠海金山办公软件有限公司 | Document display method and device and electronic equipment |
| US11004406B1 (en) * | 2020-01-05 | 2021-05-11 | Himax Technologies Limited | Dual liquid crystal display device |
| CN111276083B (en) * | 2020-01-16 | 2021-08-31 | 深圳市爱协生科技有限公司 | Demura Table data compression method and decompression method |
| TWI728767B (en) * | 2020-03-30 | 2021-05-21 | 由田新技股份有限公司 | Display module calibration method and display module calibration system |
| CN111601048B (en) * | 2020-05-13 | 2022-04-19 | 展讯通信（上海）有限公司 | Image processing method and device |
| CN113407139B (en) * | 2021-07-01 | 2022-10-21 | 岳阳晶显科技有限公司 | Liquid crystal display screen intelligent control regulation and control method and system based on cloud computing |
| CN115547226B (en) * | 2022-10-17 | 2023-09-08 | 深圳市安立信电子有限公司 | Brightness self-checking and early warning method and device for medical display and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315745A (en) * | 2007-05-28 | 2008-12-03 | 统宝光电股份有限公司 | Image display system and its moire defect elimination method |
| CN102903347A (en) * | 2012-10-29 | 2013-01-30 | 广东步步高电子工业有限公司 | Method and system for effectively solving problem of unclear display of liquid crystal display screen under sunshine |
| CN104700786A (en) * | 2014-12-26 | 2015-06-10 | 小米科技有限责任公司 | Display brightness adjustment method and device |
| CN105303532A (en) * | 2015-10-21 | 2016-02-03 | 北京工业大学 | Wavelet domain Retinex image defogging method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101255711B1 (en) * | 2010-07-02 | 2013-04-17 | 엘지디스플레이 주식회사 | 3d image display device and driving method thereof |
-
2016
- 2016-03-30 CN CN201610194644.8A patent/CN105719611B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315745A (en) * | 2007-05-28 | 2008-12-03 | 统宝光电股份有限公司 | Image display system and its moire defect elimination method |
| CN102903347A (en) * | 2012-10-29 | 2013-01-30 | 广东步步高电子工业有限公司 | Method and system for effectively solving problem of unclear display of liquid crystal display screen under sunshine |
| CN104700786A (en) * | 2014-12-26 | 2015-06-10 | 小米科技有限责任公司 | Display brightness adjustment method and device |
| CN105303532A (en) * | 2015-10-21 | 2016-02-03 | 北京工业大学 | Wavelet domain Retinex image defogging method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105719611A (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105719611B (en) | The show uniformity method of adjustment and device of liquid crystal display | |
| CN101340523B (en) | Method and apparatus for exposure compensating digital image | |
| US20170263198A1 (en) | System and method for adjusting luminance of a display screen | |
| CN103531175B (en) | Splicing display device screen intensity uniformity tuning method and system | |
| CN104167194B (en) | Liquid crystal display panel gray-scale value setting method and liquid crystal display | |
| US9218653B2 (en) | Method and apparatus for dynamic range enhancement of an image | |
| CN107408367B (en) | Method, device and system for correcting unevenness of display screen | |
| EP3379822B1 (en) | Video enhancement method, terminal, and nonvolatile computer readable storage medium | |
| JP2016038567A (en) | Display device and control method of the same | |
| CN105869579B (en) | Backlight brightness regulation method, device and display terminal | |
| CN109243384B (en) | Display device, driving method thereof, driving apparatus thereof, and computer readable medium | |
| US8781225B2 (en) | Automatic tone mapping method and image processing device | |
| CN110956932B (en) | Display device, driving method thereof, driving apparatus thereof, and computer readable medium | |
| CN107680056A (en) | A kind of image processing method and device | |
| JP2018526755A (en) | Image contrast enhancement method | |
| CN110738603B (en) | Image gray level processing method and device, computer equipment and storage medium | |
| CN107665681B (en) | Liquid crystal display driving method, system and computer readable medium | |
| CN112927654B (en) | Backlight control method and device and terminal equipment | |
| CN102568386A (en) | Method and system for dynamic backlight local control liquid crystal display | |
| CN109599054A (en) | The control method and device of display panel brightness | |
| CN103069478B (en) | Video display control apparatus | |
| CN112767891B (en) | Mura compensation method, display panel and display device | |
| CN109817170A (en) | Pixel compensation method, device and terminal device | |
| CN116168652A (en) | Image display method, device, electronic equipment and computer readable storage medium | |
| CN105654424B (en) | Adjustment ratio display methods, display system, display device and the terminal of image |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266100, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266100, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |