CN105719611A - Display uniformity adjusting method and device for liquid crystal display equipment - Google Patents
Display uniformity adjusting method and device for liquid crystal display equipment Download PDFInfo
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- 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
Abstract
The invention provides a display uniformity adjusting method and device for liquid crystal display equipment.The method comprises the steps of detecting and obtaining the ambient brightness of the liquid crystal display equipment and the original brightness of an image frame to be displayed; obtaining the adjustment coefficient of the image frame to be displayed according to the ambient brightness and the original brightness of the image frame to be displayed, and adjusting the original grey-scale value of the image frame to be displayed according to the adjustment coefficient.According to the method, the adjustment coefficient is dynamically adjusted according to the ambient brightness in different environments and the original brightness of the image frame to be displayed so that the original grey-scale value of the image frame to be displayed can be adjusted, and compared with the prior art that non-uniform display is reduced by presetting coefficients, the method has the advantage that the degree of non-uniform display is reduced dynamically, so that on the premise that brightness loss of an image to be displayed is reduced as much as possible, a user does not feel the non-uniformity of display of the image on the liquid crystal display equipment easily, and then visual experience of the user is better.
Description
Technical field
The present invention relates to lcd technology, particularly relate to show uniformity method of adjustment and the device of a kind of liquid crystal display.
Background technology
At present, liquid crystal display generally all adopts light emitting diode (LightEmittingDiode, it is called for short LED) as backlight, and liquid crystal panel is illuminated by main employing direct-type backlight technology or side entrance back technology, to realize the display of picture.But owing to LED luminance is uneven or the quality problem of diaphragm between LED and liquid crystal panel, the problem often resulting in picture appearance display uneven (mura) that display floater presents.
In prior art, the problem uneven in order to reduce display, mainly select better quality ground LED or select better quality ground diaphragm, uneven to reduce display as far as possible.But, adopt the method for prior art can be greatly increased the manufacturing cost of liquid crystal display.Further, in order to improve the show uniformity of liquid crystal apparatus, also software approach method can be adopted, that is: the brightness of the high-brightness region of LCDs is reduced by image gray-scale level brightness adjustment, reach to improve brightness uniformity purpose, although after adjustment, brightness uniformity increases, but the overall brightness of display image then has greater loss, therefore, take into account brightness and show uniformity is technical problem urgently to be resolved hurrily.
Summary of the invention
The present invention provides show uniformity method of adjustment and the device of a kind of liquid crystal display, for the problem solving how to take into account brightness and show uniformity.
First aspect present invention provides the show uniformity method of adjustment of a kind of liquid crystal display, including:
Detection obtains the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame；
Original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame；
The original gray-scale value of described image to be displayed frame is adjusted according to described regulation coefficient.
Second aspect present invention provides the show uniformity adjusting apparatus of a kind of liquid crystal display, including:
Detection module, for detecting the original brightness of ambient brightness and the image to be displayed frame obtaining liquid crystal display；
Acquisition module, the original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame；
Adjusting module, adjusts the original gray-scale value of described image to be displayed frame according to described regulation coefficient.
In the show uniformity method of adjustment of liquid crystal display provided by the invention and device, detection obtains the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame, and then the original brightness according to this ambient brightness and image to be displayed frame determines regulation coefficient, and the original gray-scale value of image to be displayed frame is adjusted according to regulation coefficient, namely user is considered without the difference of visual experience under ambient brightness, original brightness according to ambient brightness under varying environment and image to be displayed frame, it is dynamically determined regulation coefficient, to adjust the original gray-scale value of image to be displayed frame, display is reduced uneven compared to the good coefficient of preset in advance in prior art, achieve and dynamically control to reduce the degree that display is uneven, while the brightness reducing shown image as far as possible is lost, make the display that user is not easy to experience on liquid crystal display shown image frame uneven, thus under the premise not improving liquid crystal display cost, meet the visual experience of user better.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the show uniformity method of adjustment embodiment one of liquid crystal display provided by the invention；
Fig. 2 is the schematic flow sheet of the show uniformity method of adjustment embodiment two of liquid crystal display provided by the invention；
Fig. 3 is the schematic flow sheet of the show uniformity method of adjustment embodiment three of liquid crystal display provided by the invention；
Fig. 4 is the image to be displayed frame schematic diagram that the show uniformity method of adjustment of liquid crystal display provided by the invention is applied；
Fig. 5 is the image to be displayed frame schematic diagram that the show uniformity method of adjustment of liquid crystal display provided by the invention is applied；
Fig. 6 is the structural representation of the show uniformity adjusting apparatus embodiment one of liquid crystal display provided by the invention；
Fig. 7 is the structural representation of the show uniformity adjusting apparatus embodiment two of liquid crystal display provided by the invention.
Detailed description of the invention
Visual experience according to user finds, when ambient brightness is higher, for instance user is in brighter environment, and display is uneven insensitive, and needs higher to display brightness, then too much should not adjust uniformity and cause luminance-reduction；When ambient brightness is relatively low, for instance brightness demand, in darker environment, to showing uneven sensitivity, is then reduced by user, it is necessary to emphasis reduces the problem that display is uneven.Prior art is usually preset correction coefficient reduce display uneven, namely the corresponding correction coefficient of each pixel corrects grey decision-making, the embodiment of the present invention is by detecting the brightness of ambient brightness and shown picture, dynamically adjust the grey decision-making of shown image, on the basis of correction coefficient, such as dynamically carry out secondary correction etc., with be avoided as much as user experience display uneven, also avoid user to experience the loss of brightness simultaneously as far as possible, accomplish to trade off preferably between show uniformity and brightness, promote the visual experience of user.
The liquid crystal display related in the embodiment of the present invention can be LCD TV, but is not limited thereto.
Fig. 1 is the schematic flow sheet of the show uniformity method of adjustment embodiment one of liquid crystal display provided by the invention, as it is shown in figure 1, the method includes:
S101, detection obtain the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame.
Ambient brightness refers to that liquid crystal display is presently in the brightness of environment, for instance in user family, and liquid crystal display is positioned at the parlor of user, then the mean flow rate in ambient brightness and parlor.Specifically, it is possible to obtained by detections such as the luminance detection devices of liquid crystal display.
It addition, the image frame of display is all made up of multiframe on liquid crystal display, in units of frame, carry out brightness consideration, while detection ambient brightness, also detect the brightness of each two field picture.The original brightness of image to be displayed frame, it is possible to obtained in conjunction with gamma (gamma) curve of this two field picture by the average gray-scale value of this two field picture, but be not limited.Wherein gamma is derived from the response curve of liquid crystal display, it is possible to be used for the non-linear relation embodying brightness with input voltage.
S102, original brightness according to above-mentioned ambient brightness and above-mentioned image to be displayed frame, it is determined that the regulation coefficient of above-mentioned image to be displayed frame.
Namely the original brightness of ambient brightness and image to be displayed frame is considered to be dynamically determined regulation coefficient, for instance, when ambient brightness is higher, user is uneven insensitive to the display of image shown on liquid crystal display, it is possible to emphasis considers brightness.But it is not limited, mainly trades off according to ambient brightness and the brightness originally of image to be displayed frame, reduce user and experience the degree that display is uneven.Original brightness for different ambient brightness and image to be displayed frame, it is possible to obtain corresponding regulation coefficient by tabling look-up, it would however also be possible to employ preset algorithm calculates corresponding regulation coefficient, and this is not restricted.
S103, according to above-mentioned regulation coefficient adjust above-mentioned image to be displayed frame original gray-scale value.
Actual adjustment process finds, the show uniformity of image shown by liquid crystal display and the size of grey decision-making have great dependency, by adjusting the grey decision-making of every two field picture, the problem that display is uneven can be effectively improved, but grey decision-making can directly influence again the brightness of image shown by liquid crystal display.After obtaining the original brightness of ambient brightness and image to be displayed frame, it is dynamically determined regulation coefficient, and according to regulation coefficient, the original gray-scale value of picture frame to be shown is adjusted, control to reduce the degree showing uneven (demura), user is allowed to be not felt by display with the image realizing finally showing on liquid crystal display as far as possible uneven, the brightness of image shown by guarantee of simultaneously also trying one's best.
In the present embodiment, detection obtains the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame, and then the original brightness according to this ambient brightness and image to be displayed frame determines regulation coefficient, and the original gray-scale value of image to be displayed frame is adjusted according to regulation coefficient, namely user is considered without the difference of visual experience under ambient brightness, original brightness according to ambient brightness under varying environment and image to be displayed frame, it is dynamically determined regulation coefficient, to adjust the original gray-scale value of image to be displayed frame, display is reduced uneven compared to the good coefficient of preset in advance in prior art, achieve and dynamically control to reduce the degree that display is uneven, while the brightness reducing shown image as far as possible is lost, make the display that user is not easy to experience on liquid crystal display shown image frame uneven, thus under the premise not improving liquid crystal display cost, meet the visual experience of user better.
Original brightness according to above-mentioned ambient brightness and above-mentioned image to be displayed frame, determine the regulation coefficient of above-mentioned image to be displayed frame, can be according to the correction coefficient of each pixel in ambient brightness, the original brightness of image to be displayed frame and this image to be displayed frame, obtain the regulation coefficient of each pixel in this image to be displayed frame.
Wherein, correction coefficient can be the coefficient uneven for reducing display being pre-configured with, namely grey decision-making reduction display is adjusted by correction coefficient uneven, in the present embodiment, original brightness according to above-mentioned ambient brightness and above-mentioned image to be displayed frame, the basis of correction coefficient carries out secondary correction, namely obtains regulation coefficient further and adjust grey decision-making.
Alternatively, when ambient brightness is bigger, such as, when ambient brightness is more than or equal to three threshold values, in image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points, namely can properly increase and reduce the degree showing uneven degree or keeping reduction display uneven.Specifically can determine further combined with the original brightness of image to be displayed frame, but be not limited thereto.
Further, when above-mentioned ambient brightness is more than or equal to three threshold values, in image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points, it is possible to including:
1) ambient brightness more than the original brightness of first threshold and above-mentioned image to be displayed frame more than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel and the correction coefficient of corresponding pixel points are identical.
When ambient brightness is bigger, the display that user is not easy to experience on liquid crystal display is uneven, and now the original brightness of image to be displayed frame is also bigger, so conventionally degree can adjust show uniformity, no longer strengthen and reduce the degree that display is uneven, certainly this is not restricted for concrete adjustment degree, it is possible to is set according to product itself.
2) ambient brightness more than the original brightness of first threshold and above-mentioned image to be displayed frame less than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
Namely, when ambient brightness is relatively big but the original brightness of image to be displayed frame is less, it is possible to emphasis considers the show uniformity of image to be displayed frame, namely can suitably strengthen and reduce the degree that display is uneven.
3) ambient brightness more than or equal to the 3rd threshold value and less than or equal to first threshold, image to be displayed frame original brightness more than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel and the correction coefficient of corresponding pixel points are identical.
Namely ambient brightness moderate but when the original brightness of image to be displayed is bigger, just conventionally degree can adjust show uniformity, no longer strengthening and reduce the degree that display is uneven, this is not restricted for concrete adjustment degree, it is possible to is set according to product itself.
4) ambient brightness more than or equal to the 3rd threshold value and less than or equal to first threshold, image to be displayed frame original brightness less than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
When ambient brightness is moderate, the original brightness of image to be displayed frame is also little, it is possible to emphasis considers the show uniformity of image to be displayed frame, suitably strengthen reducing the degree that display is uneven.
Above-mentioned 3rd threshold value is less than first threshold, and above-mentioned each threshold value is in this no limit, it is possible to configure according to specifically product.
It addition, on the basis of above-described embodiment, when ambient brightness is less, the original brightness according to image to be displayed frame is dynamically determined regulation coefficient further:
1) ambient brightness less than the original brightness of the 3rd threshold value and above-mentioned image to be displayed frame more than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points.
When namely but the original brightness of ambient brightness less image to be displayed frame is bigger, then brightness can be considered by emphasis, suitably reduce and reduce the degree that display is uneven.
2) ambient brightness less than the original brightness of the 3rd threshold value and above-mentioned image to be displayed frame less than Second Threshold time, in image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
Namely when the original brightness of, image to be displayed frame less at ambient brightness is also little, the display that user is easier to experience on liquid crystal display shown picture is uneven, so emphasis considers the show uniformity of image to be displayed frame, namely can suitably strengthen reducing the degree that display is uneven.
Certainly, it is not limited with above-described embodiment, it is possible to be adjusted the weight of the brightness of image to be displayed frame and the weight of above-mentioned show uniformity according to practical situation.
Fig. 2 is the schematic flow sheet of the show uniformity method of adjustment embodiment two of liquid crystal display provided by the invention, on the basis of above-described embodiment, as shown in Figure 2, above-mentioned according to the correction coefficient of each pixel in ambient brightness, the original brightness of image to be displayed frame and this image to be displayed frame, obtain the regulation coefficient of each pixel in this image to be displayed frame, it is possible to including:
S201, original brightness according to above-mentioned ambient brightness and above-mentioned image to be displayed frame, obtain the adjustment weight of this image to be displayed frame.
In general, corresponding one of image to be displayed frame adjusts weight, and the adjustment weight that namely each pixel of image to be displayed frame is corresponding is identical.
S202, according to correction coefficient corresponding to each pixel in adjustment weight corresponding to above-mentioned image to be displayed frame and this image to be displayed frame, it is determined that the regulation coefficient of each pixel in this image to be displayed frame.
Above-mentioned correction coefficient can be passed through to search the correction coefficient table preset and obtain, and is certainly not limited, it is also possible to be calculated in real time by parameter preset.
It is uneven to reduce display that the correction coefficient that each pixel is corresponding is used to the original gray-scale value correcting each pixel, original gray-scale value can being multiplied by correction coefficient as the case may be or add correction coefficient, deduct correction coefficient etc., this is not restricted.
In the present embodiment, original brightness according to actual environment and image to be displayed frame, obtain further and adjust weight, this adjustment weight correction coefficient to each pixel can be passed through and do correction further, obtain the regulation coefficient that each pixel is final, then pass through the original gray-scale value of the regulation coefficient each pixel of actual correction, equally, can being original gray-scale value is multiplied by regulation coefficient or adds regulation coefficient, deduct correction coefficient etc., this is not restricted.
To be multiplied by regulation coefficient, it is assumed that the original gray-scale value of pixel i is xi, corresponding correction coefficient is ai, the adjustment weight k of image to be displayed frame belonging to pixel i, the regulation coefficient of this pixel is k ai, then the grey decision-making of the pixel i after final adjustment is designated as xi', xi'=k ai·xi。
Illustrate, for regulation coefficient more than correction coefficient in the case of, assume that the correction coefficient calculating certain pixel obtaining image to be displayed frame corresponding is a, the weight of the brightness of this image to be displayed frame is less than the weight of above-mentioned show uniformity, an adjustment weight more than 1 can be preset, it is multiplied by original correction coefficient a, for instance taking adjustment weight k is 1.2, and being adjusted coefficient is 1.2a.But it is not limited, it is also possible to add one to a and adjust weight.
Illustrate, for regulation coefficient less than correction coefficient in the case of, assume that the correction coefficient calculating certain pixel obtaining image to be displayed frame corresponding is a, the weight of the brightness of this image to be displayed frame is more than the weight of above-mentioned show uniformity, an adjustment weight less than 1 can be preset, it is multiplied by original correction coefficient a, for instance taking adjustment weight k is 0.7, and being adjusted coefficient is 0.7a.But it is not limited, it is also possible to deduct one to a and adjust weight.
The adjustment weight k that above-mentioned image to be displayed frame is corresponding, it is possible to specifically include following situation:
1) ambient brightness more than the original brightness of first threshold and above-mentioned image to be displayed frame more than Second Threshold time, k=1.
2) ambient brightness more than the original brightness of first threshold and above-mentioned image to be displayed frame less than Second Threshold time, k=k1>1。
3) ambient brightness more than or equal to the 3rd threshold value and less than or equal to first threshold, image to be displayed frame original brightness less than Second Threshold time, k=k2>1。
4) ambient brightness more than or equal to the 3rd threshold value and less than or equal to first threshold, image to be displayed frame original brightness more than Second Threshold time, k=1.
5) ambient brightness more than or equal to the 3rd threshold value and less than or equal to first threshold, image to be displayed frame original brightness less than Second Threshold time, k=k3>1。
6) ambient brightness less than the original brightness of the 3rd threshold value and above-mentioned image to be displayed frame more than Second Threshold time, k=k4<1。
Bright dark degree according to ambient brightness, it may be determined that k3>k2>k1>1>k4。
Certainly, it is not limited with above-mentioned example, it is possible to specifically limit as the case may be.
Fig. 3 is the schematic flow sheet of the show uniformity method of adjustment embodiment three of liquid crystal display provided by the invention, Fig. 4 be liquid crystal display provided by the invention show uniformity method of adjustment in luminance filtering template schematic diagram, Fig. 5 is the image to be displayed frame schematic diagram that the show uniformity method of adjustment of liquid crystal display provided by the invention is applied.
As it is shown on figure 3, before above-mentioned S202, it is also possible to including:
S301, obtain the correction coefficient table that above-mentioned image to be displayed frame is corresponding.
At least one predeterminable area one_to_one corresponding of correction coefficient in this correction coefficient table and this image to be displayed frame, wherein this predeterminable area includes at least one pixel.
Implement in process, in order to save memory space, it is possible to the size of image shown by liquid crystal display, display floater is preset as multiple region, the corresponding correction coefficient in each region.
Specifically, it is possible to determine suitable region quantity according to the distribution of LED in liquid crystal display, the display resolution of module, supported spatial cache size.
The correction coefficient in each region can be obtain according to the object brightness of each GTG in this region and the object brightness in whole region.
Illustrate, assume that current liquid crystal display device is 32 cun of liquid crystal module, LED employing 2 × 6 distribution, high-resolution (HighDefinition, it is called for short HD), spatial cache is less, thus rule of thumb it is divided into 13 × 44 regions (block), after cutting marginal portion, each region includes 37 × 20 pixels, namely comprises 37 × 20 brightness datas.
And then, the original brightness in each region is designated as LO, specifically can be obtained by the meansigma methods of 37 × 20 brightness datas, it is also possible to selecting intermediate value after 37 × 20 brightness data sequences, this is not restricted；Then the object brightness in each region is calculated, specifically, for first area, obtain the rectangular histogram of the brightness data of all pixels in first area, take brightness accounting brightness in preset range (such as between 90%-100%) in rectangular histogram, be designated as Lh, give the weight of A%, and calculate the mean flow rate L of first areaa, give the weight of (1-A) %, and then according to formula: LT1=Lh× A%+La× (1-A) % calculates the preset target brightness L of this first areaT1, other region in like manner calculates.Wherein A% can rule of thumb value, for instance taking 50%, this is not restricted.
The preset target brightness in each region being filtered, until meeting pre-conditioned, obtaining the realistic objective brightness L in each regionT2Wherein Filtering Template can be the matrix including multiple region, with reference to Fig. 4, such as select the matrix of 3*3, the Filtering Template 04 of this 3*3 is upper mobile at image to be displayed frame (generous collimation mark knows image to be displayed frame), obtain diverse location brightness value, this pre-conditioned by: a) deviation range between the brightness value of the first center, template region O1 brightness value 1,2,3,4,5,6,7,8 positions adjacent with this O1 that Filtering Template is corresponding meets predetermined threshold value；B) deviation range of the center brightness value of any two template region that Filtering Template is corresponding meets predetermined threshold value, for instance in Fig. 4, the deviation range between O1 brightness value and O2 brightness value meets predetermined threshold value.The center brightness value namely obtained in filtration module moving process and the deviation of adjacent position brightness value to meet predetermined threshold value, and the deviation of luminance values of the center in any two district obtained in moving process meets predetermined threshold value.
Finally, by LOAnd LT2Be converted to grey decision-making GOAnd GT2, concrete transformation process can adopt prior art, and this is not restricted, then the correction coefficient of first area can be GT2/GO。
So that follow-up adjustment more meets the practical situation of image, after obtaining correction coefficient table, can also simply adjust again, such as in order to avoid grey decision-making spilling (more than 255) of some pixel after adjusting, the correction coefficient corresponding for natively bigger grey decision-making limits, picture is more than grey decision-making more than 64, and its correction coefficient is not more than predetermined threshold value, is not especially limited at this.
S302, obtain, according to above-mentioned correction coefficient table, the correction coefficient that each pixel is corresponding in above-mentioned image to be displayed frame.
If memory space is enough big, then correction coefficient table can directly store the correction coefficient that each pixel is corresponding, then be no need for carrying out S302.
When each region includes multiple pixel, it is possible to calculate the correction coefficient that each pixel is corresponding further.Specifically, the correction coefficient according to the correction coefficient of this pixel region and adjacent area, adopt bilinear interpolation algorithm to obtain the correction coefficient of this pixel.
As shown in Figure 5, the a certain frame image to be displayed of this liquid crystal display is divided into 9 regions, each region includes 4 less subregions, such as zone line is divided into these 4 less regions of A, B, C, D, certain pixel drops in B, utilize the correction coefficient of zone line oneself, and the correction coefficient in adjacent 2,3,5 regions, B region, bilinear interpolation is adopted to calculate the actual correction coefficient of this pixel, certainly it is not limited with this example, such as can also adopt similar approach Further Division smaller region, until in units of pixel.
Fig. 6 is the structural representation of the show uniformity adjusting apparatus embodiment one of liquid crystal display provided by the invention, this device can be integrated in liquid crystal display, as shown in Figure 6, this device includes: detection module 601, acquisition module 602 and adjusting module 603, wherein:
Detection module 601, for detecting the original brightness of ambient brightness and the image to be displayed frame obtaining liquid crystal display.
Acquisition module 602, the original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame.
Adjusting module 603, adjusts the original gray-scale value of described image to be displayed frame according to described regulation coefficient.
In the present embodiment, detection obtains the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame, and then the original brightness according to this ambient brightness and image to be displayed frame determines regulation coefficient, and the original gray-scale value of image to be displayed frame is adjusted according to regulation coefficient, namely user is considered without the difference of visual experience under ambient brightness, original brightness according to ambient brightness under varying environment and image to be displayed frame, it is dynamically determined regulation coefficient, to adjust the original gray-scale value of image to be displayed frame, display is reduced uneven compared to the good coefficient of preset in advance in prior art, achieve and dynamically control to reduce the degree that display is uneven, while the brightness reducing shown image as far as possible is lost, make the display that user is not easy to experience on liquid crystal display shown image frame uneven, thus under the premise not improving liquid crystal display cost, meet the visual experience of user better.
Specifically, acquisition module 602, specifically for according to the correction coefficient of each pixel in described ambient brightness, the original brightness of described image to be displayed frame and described image to be displayed frame, obtaining the regulation coefficient of each pixel in described image to be displayed frame.
Alternatively, when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points.
Further, when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points, particularly as follows:
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame more than Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points, wherein, described 3rd threshold value is less than described first threshold；
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness more than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
Further, described ambient brightness less than the original brightness of the 3rd threshold value and described image to be displayed frame more than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points；
Described ambient brightness less than the original brightness of described 3rd threshold value and described image to be displayed frame less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
But it is not limited with above-mentioned embodiment.
Fig. 7 is the structural representation of the show uniformity adjusting apparatus embodiment two of liquid crystal display provided by the invention, on the basis of Fig. 6, this device also includes: correction module 701, the correction coefficient table corresponding for obtaining described image to be displayed frame, at least one predeterminable area one_to_one corresponding of correction coefficient in described correction coefficient table and described image to be displayed frame, wherein, described predeterminable area includes at least one described pixel；The correction coefficient that in described image to be displayed frame, each described pixel is corresponding is obtained according to described correction coefficient table.
This device is used for performing preceding method embodiment, and it is similar with technique effect that it realizes principle, does not repeat them here.
The present invention also provides for a kind of liquid crystal display, and including processor, this processor is used for performing preceding method embodiment, and it is similar with technique effect that it realizes principle, does not repeat them here.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method, it is possible to realize by another way.Such as, device embodiment described above is merely schematic, such as, the division of described unit, being only a kind of logic function to divide, actual can have other dividing mode when realizing, for instance multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can ignore, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be through INDIRECT COUPLING or the communication connection of some interfaces, device or unit, it is possible to be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, it would however also be possible to employ hardware adds the form of SFU software functional unit and realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, it is possible to be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (English: processor) perform the part steps of method described in each embodiment of the present invention.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory are (English: Read-OnlyMemory, be called for short: ROM), random access memory (English: RandomAccessMemory, RAM), the various media that can store program code such as magnetic disc or CD be called for short:.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the show uniformity method of adjustment of a liquid crystal display, it is characterised in that including:
Detection obtains the ambient brightness of liquid crystal display and the original brightness of image to be displayed frame；
Original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame；
The original gray-scale value of described image to be displayed frame is adjusted according to described regulation coefficient.
2. method according to claim 1, it is characterised in that the described original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame, including:
According to the correction coefficient of each pixel in described ambient brightness, the original brightness of described image to be displayed frame and described image to be displayed frame, obtain the regulation coefficient of each pixel in described image to be displayed frame.
3. method according to claim 2, it is characterised in that when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points.
4. method according to claim 3, it is characterised in that when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points, particularly as follows:
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame more than Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points, wherein, described 3rd threshold value is less than described first threshold；
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness more than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
5. method according to claim 2, it is characterized in that, described ambient brightness less than the original brightness of the 3rd threshold value and described image to be displayed frame more than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is less than the correction coefficient of corresponding pixel points；
Described ambient brightness less than the original brightness of described 3rd threshold value and described image to be displayed frame less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
6. the method according to any one of claim 2-5, it is characterised in that described method also includes:
Obtaining at least one predeterminable area one_to_one corresponding of the correction coefficient table that described image to be displayed frame is corresponding, the correction coefficient in described correction coefficient table and described image to be displayed frame, wherein, described predeterminable area includes at least one described pixel；
The correction coefficient that in described image to be displayed frame, each described pixel is corresponding is obtained according to described correction coefficient table.
7. the show uniformity adjusting apparatus of a liquid crystal display, it is characterised in that including:
Detection module, for detecting the original brightness of ambient brightness and the image to be displayed frame obtaining liquid crystal display；
Acquisition module, the original brightness according to described ambient brightness and described image to be displayed frame, it is determined that the regulation coefficient of described image to be displayed frame；
Adjusting module, adjusts the original gray-scale value of described image to be displayed frame according to described regulation coefficient.
8. device according to claim 7, it is characterized in that, described acquisition module, specifically for according to the correction coefficient of each pixel in described ambient brightness, the original brightness of described image to be displayed frame and described image to be displayed frame, obtaining the regulation coefficient of each pixel in described image to be displayed frame.
9. device according to claim 8, it is characterised in that when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points.
10. device according to claim 8, it is characterised in that when described ambient brightness is more than or equal to three threshold values, in described image to be displayed frame, the regulation coefficient of each pixel is more than or equal to the correction coefficient of corresponding pixel points, particularly as follows:
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame more than Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points, wherein, described 3rd threshold value is less than described first threshold；
Described ambient brightness more than the original brightness of first threshold and described image to be displayed frame less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness more than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is identical with the correction coefficient of corresponding pixel points；
Described ambient brightness more than or equal to described 3rd threshold value and less than or equal to described first threshold, described image to be displayed frame original brightness less than described Second Threshold time, in described image to be displayed frame, the regulation coefficient of each pixel is more than the correction coefficient of corresponding pixel points.
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