CN110197635A - A kind of display device and its driving method and electronic equipment - Google Patents
A kind of display device and its driving method and electronic equipment Download PDFInfo
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- CN110197635A CN110197635A CN201910482106.2A CN201910482106A CN110197635A CN 110197635 A CN110197635 A CN 110197635A CN 201910482106 A CN201910482106 A CN 201910482106A CN 110197635 A CN110197635 A CN 110197635A
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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
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Abstract
The embodiment of the invention discloses a kind of display device and its driving method and electronic equipment, display device includes: backlight module and display panel, display panel includes display area, display area includes multiple pixels, pixel includes at least the first color sub-pixels, and display area includes the first display area and the edge display area around the first display area；The driving method includes: to receive image to be displayed and obtain the input grayscale P1i for being located at the first color sub-pixels of each of edge display area in image to be displayed；According to the intensity deviation parameter of the first color sub-pixels and input grayscale P1i, the output grayscale P1o of the first color sub-pixels is adjusted according to following formula,Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.In the embodiment of the present invention, the phenomenon that display stage edge display area is shaded is improved, display effect is optimized.
Description
Technical field
The present embodiments relate to display technology more particularly to a kind of display devices and its driving method and electronics to set
It is standby.
Background technique
High dynamic range images (High-Dynamic Range, abbreviation HDR), compared to common image, can provide more
More dynamic ranges and image detail, according to the low dynamic range echograms of different time for exposure (Low-Dynamic Range,
Abbreviation LDR), final HDR image is synthesized using the LDR image of corresponding best details of each time for exposure, it can be better
Reflect the visual effect in true environment.HDR, which is shown, has higher color depth, wider array of dynamic range and stronger color table
Existing power, specific HDR display is using the display panel of high NTSC color gamut and the backlight mould of local dimming (local dimming)
Group realizes the high colour gamut and high comparison of picture.
Micro-led MiniLED is mounted in HDR display, the MiniLED of central display area is relative to side
The MiniLED of edge display area, more assembles, and the local excitation energy of MiniLED aggregation is more, therefore center is shown when display
The excitation energy in region is greater than the excitation energy of edge display area.Excitation capacity variance of the MiniLED in distributing position as a result,
Cause edge display area to be shaded, influences display effect.
Summary of the invention
The embodiment of the present invention provides a kind of display device and its driving method and electronic equipment, to solve to show picture side
The problem of edge region is shaded.
The embodiment of the invention provides a kind of driving method of display device, the display device include: backlight module and
Display panel, the display panel include display area, and the display area includes multiple pixels, and the pixel includes at least the
One color sub-pixels, the display area include the first display area and the edge viewing area around first display area
Domain；
The driving method includes:
It receives image to be displayed and obtains and be located at each of described edge display area described the in the image to be displayed
The input grayscale P1i of one color sub-pixels；
According to the intensity deviation parameter of first color sub-pixels and input grayscale P1i, institute is adjusted according to following formula
The output grayscale P1o of the first color sub-pixels is stated,
Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, comprising: backlight module and display
Panel, the display panel include display area, and the display area includes multiple pixels, and the pixel includes at least the first face
Sub-pixels, the display area include the first display area and the edge display area around first display area；
Further include: driving chip, the driving chip is for receiving image to be displayed and obtaining in the image to be displayed
Positioned at the input grayscale P1i of each of the edge display area first color sub-pixels, further according to first color
The intensity deviation parameter and input grayscale P1i of sub-pixel, the output ash of first color sub-pixels is adjusted according to following formula
Rank P1o,
Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.
Based on the same inventive concept, the embodiment of the invention also provides a kind of electronic equipment, including show as described above
Device.
In the embodiment of the present invention, receives image to be displayed and obtain in image to be displayed positioned at each of edge display area
The input grayscale P1i of first color sub-pixels is pressed according to the intensity deviation parameter of the first color sub-pixels and input grayscale P1i
The output grayscale P1o of the first color sub-pixels is adjusted according to formula.In the display stage, drive module is according to the of edge display area
First color sub-pixels of the output gray scale control edge display area of one color sub-pixels are shown that drive module is according to
Each sub-pixel of the first display area of input gray scale control of each sub-pixel of one display area is shown, is thus shown
Image to be displayed.Wherein, the output grayscale of the first color sub-pixels is compensated grayscale value, then the first of edge display area
Color sub-pixels export grayscale according to it and are shown, can play the effect of the first color sub-pixels brightness of compensation, Jin Erti
The phenomenon that rising the brightness of edge display area, improving the obfuscation of edge display area；First color sub-pixels of edge display area
It exports grayscale according to it to be shown, additionally it is possible to play the effect of the first color sub-pixels coloration of compensation, and then it is aobvious to improve edge
Show the colour cast in region.
Detailed description of the invention
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 technical description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of schematic diagram of display device provided in an embodiment of the present invention；
Fig. 2 is cross-sectional view of the Fig. 1 along A-A'；
Fig. 3 is a kind of schematic diagram of the driving method of display device provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of the driving method of display device provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the driving method of display device provided in an embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of the driving method of display device provided in an embodiment of the present invention；
Fig. 7 is a kind of schematic diagram of display device provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, clearly and completely describes technical solution of the present invention by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Refering to what is shown in Fig. 1, being a kind of schematic diagram of display device provided in an embodiment of the present invention, Fig. 2 is Fig. 1 along A-A'
Cross-sectional view.In the present embodiment, display device includes: backlight module 10 and display panel 20, and display panel 20 includes display area
21, display area 21 includes multiple pixels 22, and pixel 22 includes at least the first color sub-pixels 23, and display area 21 includes first
Display area 21a and edge display area 21b around the first display area 21a.Wherein, what Fig. 2 was merely exemplary depicts it
In a pixel 22 structure.
In the present embodiment, display area 21 includes multiple pixels 22, and pixel 22 includes at least the first color sub-pixels 23.?
Optional pixel 22 includes 3 different colours sub-pixels in the present embodiment, and color is respectively R, G, B, may be used also in other embodiments
Selecting pixel 22 includes 4 different colours sub-pixels, and color is respectively RGBW or RGBY etc..Display area 21 further includes the first display
Region 21a and edge display area 21b around the first display area 21a.It is completed it should be noted that being produced in display panel
Later, by carrying out repeatedly display test to display panel, it may be determined that the range of the first display area 21a and edge display area
The range of 21b.In the present embodiment, optional first display area 21a is normal colourless inclined display area, edge display area 21b
To there is colour cast display area.It should be noted that the edge display area range of different sized products may be different, every kind of product
Edge display area by test obtain.
The determination process of the range of the range and edge display area 21b of first display area 21a is chosen as, display panel
Show test pictures, detection device obtains the actual displayed brightness and coloration of each region in display panel, judges display panel
Each region actual displayed brightness whether be in the original brightness section of corresponding region in test pictures and each region
Whether actual displayed coloration is in the original colorimetric section of corresponding region in test pictures, if then determining that the region is colourless
Partially, if otherwise determining, there are colour casts in the region.The region that colour cast will be present is named as edge display area 21b.
It should be noted that edge display area 21b usually surrounds the first display area 21a, which is because, display dress
It is set to liquid crystal display device, the display panel of liquid crystal display device is gone out by opening panel cutting greatly, is cut when panel is cut greatly
The survey of secant two fluorescent film cutting precision is different, and the display panel after leading to cutting excites fluorescence close to the display unit of cutting line
Powder concentration and display panel have differences far from the display unit excitated fluorescent powder concentration of cutting line, cause display panel edge aobvious
The display effect for showing region is different with the display effect of central display area；And miniature luminous two are mounted in display device
The MiniLED of pole pipe MiniLED, the MiniLED of display panel central display area relative to edge display area, more assembles,
And the local excitation energy of MiniLED aggregation is more, therefore the excitation energy of display panel central display area is greater than after cutting
The excitation energy of display panel edge display area after cutting.Fluorescent film cutting precision and MiniLED distributing position difference as a result,
Display panel edge display area is caused to be shaded.
Refering to what is shown in Fig. 3, being a kind of schematic diagram of the driving method of display device provided in an embodiment of the present invention.The display
Device is chosen as any one display device for being integrated with backlight module, such as is integrated with the liquid crystal display device of backlight module,
It is particularly suitable for the display device based on HDR technology, is also chosen as being integrated with other classes of backlight module in other embodiments
Type display device.Integrating drive module in a display device herein can be performed the driving method of the display device, the driving mould
Block is realized and is configured in the display device by the way of software and/or hardware.The driving side of the display device in the present embodiment
Method includes:
Step 110 receives image to be displayed and obtains in image to be displayed positioned at the first face of each of edge display area
The input grayscale P1i of sub-pixels.
In the present embodiment, drive module is electrically connected with display panel and backlight module respectively, and drive module controls display surface
Plate shows that picture, also control backlight module provide backlight to display panel.Drive module determines the image to be displayed of display panel
Afterwards, image to be displayed can be analyzed and processed, to be previously obtained display panel before display panel shows image to be displayed
Show that the corresponding input parameter of each sub-pixel when image to be displayed, the input parameter of specific sub-pixel are that drive module is pre-
The input grayscale of each sub-pixel corresponding with image to be displayed first determined.
The display area of display panel is divided into edge display area and the first display area in advance, and edge display area is deposited
In colour cast, the first display area is normal display area.In the present embodiment, display module is previously obtained display panel subsequent aobvious
When showing image to be displayed, positioned at the input grayscale P1i of the first color sub-pixels of each of edge display area.It is appreciated that driving
The input grayscale of the predetermined sub-pixel of dynamic model block is the display parameters associated with image to be displayed of sub-pixel, herein not
It illustrates.
Step 120, intensity deviation parameter and input grayscale P1i according to the first color sub-pixels, according to following formula tune
The output grayscale P1o of the first color sub-pixels is saved,
Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.
The intensity deviation parameter of different colours sub-pixel is previously stored in the present embodiment, in drive module, with pixel packet
The intensity deviation parameter of red sub-pixel, green sub-pixels are previously stored with for including RGB3 sub-pixels, in drive module
The intensity deviation parameter of intensity deviation parameter and blue subpixels.The intensity deviation parameter of the first color sub-pixels can be with table herein
Sign is the offset of the actual displayed brightness of the first color sub-pixels and theoretical display brightness in edge display area, different colours
The intensity deviation parameter of pixel may be different.
It is appreciated that the intensity deviation parameter of the first color sub-pixels is precomputed and is stored in drive module
Known numeric value.Drive module also when receiving image to be displayed, analyzes image to be displayed to obtain edge viewing area in advance
The input grayscale P1i of the first color sub-pixels of each of domain.Drive module is according to the intensity deviation parameters of the first color sub-pixels
With input grayscale P1i, the output grayscale P1o of the first color sub-pixels can be calculated according to above-mentioned formula.
Specifically, if the first color sub-pixels of edge display area are shown according to input grayscale P1i, it is practical aobvious
Show that effect is turned blue obfuscation, be based on this, needs to carry out the first color sub-pixels intensity deviation compensation i.e. promotion edge display area
Display effect, make show homogeneity.And grayscale is different with the concept of brightness, grayscale is characterized using nature numerical value, brightness
It is characterized using percentage, grayscale is converted to the gray scale P1i of percentage hereink/ 255 are characterized.Then in gray scale base
Intensity deviation compensation is carried out on plinthIt can so obtain compensated gray valueAccording to benefit
Compensated grayscale value is calculated in gray value after repaying.It is appreciated that k is to precalculate the colour cast degree value obtained, colour cast
Degree value is the whole colour cast degree of edge display area, and the colour cast degree value of different colours sub-pixel is all the same.
In the present embodiment, the output grayscale P1o of the first color sub-pixels of edge display area is calculated.In display rank
Section, drive module is according to the first face of the output gray scale control edge display area of the first color sub-pixels of edge display area
Sub-pixels are shown, while drive module is aobvious according to the input gray scale control first of each sub-pixel of the first display area
Show that each sub-pixel in region is shown.The brightness and coloration that so may make edge display area are promoted.And driving mould
Block also controls backlight module and shines to provide backlight to display panel.
In the present embodiment, receives image to be displayed and obtain in image to be displayed positioned at each of edge display area first
The input grayscale P1i of color sub-pixels, according to the intensity deviation parameter of the first color sub-pixels and input grayscale P1i, according to public affairs
Formula adjusts the output grayscale P1o of the first color sub-pixels.In the display stage, drive module is according to the first face of edge display area
First color sub-pixels of the output gray scale control edge display area of sub-pixels are shown that drive module is aobvious according to first
Show that each sub-pixel of the first display area of input gray scale control of each sub-pixel in region is shown, thus shows to aobvious
Diagram picture.Wherein, the output grayscale of the first color sub-pixels is compensated grayscale value, then the first color of edge display area
Sub-pixel exports grayscale according to it and is shown, can play the effect of the first color sub-pixels brightness of compensation, and then promote side
The brightness of edge display area improves the phenomenon that edge display area is shaded；First color sub-pixels of edge display area according to
It exports grayscale and is shown, additionally it is possible to play the effect of the first color sub-pixels coloration of compensation, and then improve edge viewing area
The colour cast in domain especially improves the color offset phenomenon that edge display area is turned blue, improves display effect.
Optionally, the first color sub-pixels are red sub-pixel, green sub-pixels or blue subpixels.Optionally, such as Fig. 4
The driving method of the display device of shown offer, before receiving image to be displayed, further includes:
Step 101, the input brightness value L i for receiving test pictures and obtaining the edge display area of test pictures, then show
Test pictures and obtain test pictures edge display area output brightness value L o；
Step 102, the intensity deviation parameter for calculating the first color sub-pixels, wherein the intensity deviation of red sub-pixel is joined
Number=k* (Li-Lo)/Li, intensity deviation parameter=(Li-Lo)/Li of green sub-pixels, the intensity deviation ginseng of blue subpixels
Number=1- (Li-Lo)/Li.
In the present embodiment, the intensity deviation parameter of different colours sub-pixel, intensity deviation are set in drive module in advance
Parameter is related to theoretical brightness value i.e. input brightness value, also related to display brightness value i.e. output brightness value, characterizes theoretical bright
The degrees of offset of angle value and display brightness value.Specifically, different colours sub-pixel luminence offset parameter is different, wherein red son
The intensity deviation parameter of pixel=k* (Li-Lo)/Li, intensity deviation parameter=(Li-Lo)/Li of green sub-pixels, blue
The intensity deviation parameter of pixel=1- (Li-Lo)/Li.
Intensity deviation parameter is stored in drive module after being calculated, and drive module can be according to the brightness of red sub-pixel
Offset parameter compensates the red sub-pixel of edge display area, and drive module can be according to the intensity deviation of green sub-pixels
Parameter compensates the green sub-pixels of edge display area, and drive module can be according to the intensity deviation parameter of blue subpixels
The blue subpixels of edge display area are compensated.It should be noted that input brightness value L i is that detection device is being shown
Before device shows test pictures, the theoretical brightness value obtained is analyzed according to test pictures, output brightness value L o is detection device
The intrinsic brilliance value for the edge display area directly detected when display device shows test pictures.
Optionally, the driving method of the display device provided as shown in Figure 5, before receiving image to be displayed, further includes:
Step 103 receives test pictures and obtains the input chromaticity coordinate of test pictures, then shows test pictures and obtain
The output chromaticity coordinate of test pictures；
Step 104, according to input chromaticity coordinate and output chromaticity coordinate, determine the x of the edge display area of test pictures
Coordinate shift parameter, Δ Wx and y-coordinate offset parameter Δ Wy, is calculated k, wherein k=2* (Δ Wx/ Δ Wy).
In the present embodiment, colour cast degree value, colour cast degree value and edge viewing area are also provided in drive module in advance
The colour cast in domain is related, characterizes the colour cast degree of edge display area, and colour cast degree value depends on the partially blue degree of white point, can pass through
K is calculated in k=2* (Δ Wx/ Δ Wy).
Specifically, the input chromaticity coordinate of test pictures can be acquired after drive module reception test pictures.Then it drives
Dynamic model block controls display device and shows test pictures, then detection device is detectable obtains reality when display device shows test pictures
Border chromaticity coordinate exports chromaticity coordinate.According to the x coordinate of edge display area in input chromaticity coordinate and output chromaticity coordinate
Value, is calculated the x coordinate offset parameter Δ Wx of the edge display area of test pictures；Meanwhile according to input chromaticity coordinate and
The y-coordinate offset of the edge display area of test pictures is calculated in the y-coordinate value for exporting edge display area in chromaticity coordinate
Parameter, Δ Wy.The numerical value of k is finally calculated according to coefficient k formula.
Wherein, optional k=2, i.e. k are approximately equal to 2* △ Wx/ △ Wy when △ Wx is close to △ Wy.
Optionally, pixel further includes the second color sub-pixels, the color of the first color sub-pixels and the second color sub-pixels
It is different.If pixel includes 3 primary colors, respectively RGB, then the first color sub-pixels are chosen as R, and the second color sub-pixels are chosen as G
Or B, the first color sub-pixels are chosen as G, and the second color sub-pixels are chosen as R or B, and the first color sub-pixels are chosen as B, and second
Color sub-pixels are chosen as R or G.
Optionally, it is obtained in image to be displayed as shown in Figure 6 and is located at the first color sub-pixels of each of edge display area
Input grayscale P1i after, further includes:
Step 111, preset first reference grayscale value, and whether the input grayscale P1i for detecting the first color sub-pixels is less than
Or it is equal to first and refers to grayscale value；
Step 120, if so, adjust the first color sub-pixels output grayscale P1o.
Step 130, if it is not, according to the intensity deviation parameter of the second color sub-pixels and input grayscale Pbi, adjust the first face
The output grayscale Pbo of the second color sub-pixels in the affiliated pixel of sub-pixels.
In the present embodiment, first plays the grayscale value of reference role with reference to grayscale value for preset one.Drive module
In pre-set this first with reference to grayscale value.Drive module obtains the input ash of the first color sub-pixels of edge display area
After rank value, whether the input grayscale value for detecting first color sub-pixels first is less than or equal to first with reference to grayscale value.If so,
Illustrate that the input grayscale value of the first color sub-pixels is smaller, if it is not, the input grayscale value of the first color sub-pixels of explanation is larger.It can
Selecting the first reference grayscale value is 252.
It should be noted that when being compensated to the first color sub-pixels, the maximum brightness G255 of the first color sub-pixels.
When it is far from 255 that the input grayscale value of the first color sub-pixels is smaller, the first color sub-pixels are compensated, it can be significant
The brightness and coloration for promoting the first color sub-pixels improve the obfuscation phenomenon of edge display area by luminance compensation.When first
The input grayscale value of color sub-pixels it is larger i.e. close to 255 when, even if carrying out luminance compensation to the first color sub-pixels, can not yet
It is obviously improved brightness, causes luminance loss, so when the input grayscale value of the first color sub-pixels is larger, it can not be by bright
Degree compensation improves the obfuscation phenomenon of edge display area.
In the present embodiment, the input grayscale value of optional first color sub-pixels it is larger i.e. close to 255 when, pass through and adjust edge
The brightness of second color sub-pixels of display area and output grayscale value, to reduce colour cast and obfuscation phenomenon, additionally it is possible to reduce bright
Degree loss, effectively avoids the problem that the sub-pixel luminence of edge display area the upper limit occurs and can not make corrections.Specifically, a picture
It include the first color sub-pixels and the second color sub-pixels in element, when the input grayscale value of first color sub-pixels is greater than or waits
When the first reference grayscale value, compensated by adjusting the output grayscale value of the second color sub-pixels in the pixel.
Optional, the first color sub-pixels are red sub-pixel or green sub-pixels, and the second color sub-pixels are the sub- picture of blue
Element.Specifically, drive module can get the input grayscale value of the blue subpixels of edge display area, and pre- in drive module
It is first stored with the intensity deviation parameter and colour cast degree value of blue subpixels, then the red sub-pixel or green of edge display area
When the input grayscale value of sub-pixel is greater than or equal to first with reference to grayscale value, can by blue subpixels in its affiliated pixel into
Row compensation, improves the phenomenon that shades of turning blue of edge display area.Specifically, according to
The output grayscale value of blue subpixels can be calculated.
In general, the display panel of liquid crystal display device is gone out, cutting line when panel is cut greatly by opening panel cutting greatly
Two survey fluorescent film cutting precisions are different, and the display panel after leading to cutting is dense close to the display unit excitated fluorescent powder of cutting line
Degree and display panel have differences far from the display unit excitated fluorescent powder concentration of cutting line, cause display panel edge viewing area
The display effect in domain is different with the display effect of central display area, is embodied in blue phenomenon.
Therefore it turns blue the phenomenon that shading to solve the edge display area of existing panel, in the present embodiment, optional first
Color sub-pixels are red sub-pixel or green sub-pixels, and the second color sub-pixels are blue subpixels.By being shown to edge
The red sub-pixel and green sub-pixels in region compensate, and improve edge display area and turn blue the effect of obfuscation, improve display
Homogeneity.
If the input grayscale value of red sub-pixel is greater than or equal to first with reference to grayscale value in edge display area, and/
Or, the input grayscale value of green sub-pixels, which is greater than or equal to first, refers to grayscale value, illustrate the sub- picture of red of edge display area
Element and the input grayscale value of green sub-pixels are larger, by compensating to the red sub-pixel and green sub-pixels, reach and change
Kind edge display area is turned blue the effect of obfuscation.Meanwhile also it can improve this by reducing the output grayscale value of blue subpixels
The coloration and brightness of blue subpixels, and then improve edge display area and turn blue the effect of obfuscation.It should be noted that edge is aobvious
Show that the input grayscale value of the red sub-pixel and/or green sub-pixels of any one dot structure in region is greater than or equal to first
With reference to grayscale value, also the sub- picture of the blue can be improved by reducing the output grayscale value of the blue subpixels of the dot structure at this time
The coloration and brightness of element.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, with reference to shown in Fig. 7 and Fig. 2, show
Showing device includes: backlight module 10 and display panel 20, and display panel 20 includes display area 21, and display area 21 includes multiple
Pixel 22, pixel 22 include at least the first color sub-pixels 23, and display area 21 is including the first display area 21a and around first
The edge display area 21b of display area 21a；Display device further include: driving chip 30, driving chip 30 is for receiving to aobvious
Diagram picture simultaneously obtains the input grayscale for being located at the first color sub-pixels 23 of each of edge display area 21b in image to be displayed
P1i, intensity deviation parameter and input grayscale P1i further according to the first color sub-pixels 23, adjusts the first face according to following formula
The output grayscale P1o of sub-pixels 23,Wherein, k is colour cast degree value, brightness
Offset parameter is less than 1.Wherein driving chip 30 is drive module described in above-mentioned any embodiment.
Display device provided in this embodiment is chosen as liquid crystal display device or any other one kind is collocated with backlight module
10 display device.Multiple micro-led MiniLED are provided in optional backlight module 10.It is provided in this embodiment aobvious
Showing device can improve edge display area colour cast and obfuscation problem, optimization display by compensating to edge display area
Effect, it is particularly possible to solve the problems, such as that the edge display area of existing panel is turned blue.
It should be noted that can determine the edge display area of display device by testing after the completion of display device production
Range or size, at this edge, display area specifically refers in display device colour cast and obfuscation region, for example, with display area
Boundary spacing be 1.5-2.0mm region be to turn blue region of shading, it is clear that under different sized products or different technology conditions
The size of the edge display area of the product of production slightly has difference.
In the present embodiment, correspond to range in edge display area and directly carry out Color correction, promoted display panel brightness and
Improve colour cast, then backlight of arranging in pairs or groups is overlapped display, can finally improve the colour cast and obfuscation problem of edge display area, so that real
Border display effect approaches and original image effect.It is appreciated that when each frame shows that image enters the drive module of display device,
Drive module shows the sub- picture of the edge display area of image according to the colour cast and obfuscation degree of edge display area to each frame
Element carries out luminance compensation, is then shown according to the output grayscale of compensated sub-pixel, display device thus can be improved
Display effect.
Based on the same inventive concept, the embodiment of the invention also provides a kind of electronic equipment 100, the electronics as shown in Figure 8
Equipment 100 includes display device described in any embodiment as above.It is integrated in the electronic equipment 100 and is sent out for showing edge
Indigo plant/obfuscation problem picture handles calculation, and can the make corrections edge display area of electronic equipment of the picture Processing Algorithm is turned blue
Obfuscation degree improves colour cast problem, improves display effect.The optional electronic equipment 100 is smart phone, tablet computer etc., is gone back
The optional electronic equipment 100 is comprehensive screen or HDR screen.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments here, be able to carry out for a person skilled in the art it is various it is apparent variation, again
It adjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, the case where not departing from present inventive concept
Under, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. a kind of driving method of display device, which is characterized in that the display device includes: backlight module and display panel,
The display panel includes display area, and the display area includes multiple pixels, and the pixel includes at least the first color
Pixel, the display area include the first display area and the edge display area around first display area；
The driving method includes:
It receives image to be displayed and obtains and be located at each of the edge display area first face in the image to be displayed
The input grayscale P1i of sub-pixels；
According to the intensity deviation parameter of first color sub-pixels and input grayscale P1i, described the is adjusted according to following formula
The output grayscale P1o of one color sub-pixels,
Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.
2. driving method according to claim 1, which is characterized in that first color sub-pixels be red sub-pixel,
Green sub-pixels or blue subpixels.
3. driving method according to claim 2, which is characterized in that before reception image to be displayed, further includes:
It receives test pictures and obtains the input brightness value L i of the edge display area of the test pictures, then show the test
Picture and obtain the test pictures edge display area output brightness value L o；
Calculate the intensity deviation parameter of first color sub-pixels, wherein
The intensity deviation parameter of the red sub-pixel=k* (Li-Lo)/Li,
The intensity deviation parameter of the green sub-pixels=(Li-Lo)/Li,
The intensity deviation parameter of the blue subpixels=1- (Li-Lo)/Li.
4. driving method according to claim 1, which is characterized in that before reception image to be displayed, further includes:
It receives test pictures and obtains the input chromaticity coordinate of the test pictures, then show described in the test pictures and acquisition
The output chromaticity coordinate of test pictures；
According to the input chromaticity coordinate and the output chromaticity coordinate, the x of the edge display area of the test pictures is determined
Coordinate shift parameter, Δ Wx and y-coordinate offset parameter Δ Wy, is calculated k, wherein k=2* (Δ Wx/ Δ Wy).
5. driving method according to claim 1, which is characterized in that the pixel further includes the second color sub-pixels, institute
It is different from the color of second color sub-pixels to state the first color sub-pixels；
Obtain the input grayscale P1i for being located at the first color sub-pixels of each of the edge display area in the image to be displayed
Later, further includes:
Preset first reference grayscale value, and whether the input grayscale P1i for detecting first color sub-pixels is less than or equal to institute
First is stated with reference to grayscale value；
If so, adjusting the output grayscale P1o of first color sub-pixels；If it is not, according to the bright of second color sub-pixels
Offset parameter and input grayscale Pbi are spent, second color sub-pixels in the affiliated pixel of the first color sub-pixels are adjusted
Output grayscale Pbo.
6. driving method according to claim 5, which is characterized in that the first reference grayscale value is 252.
7. driving method according to claim 5, which is characterized in that first color sub-pixels be red sub-pixel or
Green sub-pixels, second color sub-pixels are blue subpixels.
8. a kind of display device characterized by comprising backlight module and display panel, the display panel include viewing area
Domain, the display area include multiple pixels, and the pixel includes at least the first color sub-pixels, and the display area includes the
One display area and edge display area around first display area；
Further include: driving chip, the driving chip are located in the image to be displayed for receiving image to be displayed and obtaining
The input grayscale P1i of each of the edge display area first color sub-pixels, further according to the first color sub- picture
The intensity deviation parameter and input grayscale P1i of element, the output grayscale of first color sub-pixels is adjusted according to following formula
P1o,
Wherein, k is colour cast degree value, and intensity deviation parameter is less than 1.
9. a kind of electronic equipment, which is characterized in that including display device as claimed in claim 8.
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