CN109856847A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN109856847A CN109856847A CN201910216717.2A CN201910216717A CN109856847A CN 109856847 A CN109856847 A CN 109856847A CN 201910216717 A CN201910216717 A CN 201910216717A CN 109856847 A CN109856847 A CN 109856847A
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- display panel
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Abstract
The present invention provides a kind of display panel and display device, the incident side of display panel is provided with backlight module, one end of the backlight module is provided with LED light source, and the display panel includes the second pixel region of the first pixel region close to the LED light source, the third pixel region far from the LED light source and connection first pixel region and the third pixel region；Wherein, the aperture opening ratio of the sub-pixel of at least one color in first pixel region is less than other sub-pixels；The aperture opening ratio of the sub-pixel of at least one color in the third pixel region is greater than other sub-pixels；To reduce by first pixel region of the display panel and the color temperature difference of the third pixel region.Correspondingly, the present invention also provides a kind of display devices including the display panel.Display panel of the present invention has lower color temperature difference compared with the display panel of the prior art.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display panel and display devices.
Background technique
Nowadays, LCD is when viewing area is designed, in order to guarantee the uniform of front face brightness in display panel and coloration
Property, it usually needs the aperture opening ratio of each pixel of RGB is consistent, but can be due to the wave of each section of processing procedure in actual production process
It is dynamic, lead to the uneven of coloration in panel.
Also, cause backlight module in light source due to the characteristic of PC material for PC material because of light guide plate in backlight module
The color temperature difference of side to opposite side is gradually expanded, and when the fluctuation of the colour temperature of panel inner light source side and opposite side becomes with backlight module colour temperature
Change consistent, and when the variation of backlight module colour temperature is larger, it is inconsistent to will lead to colour temperature in panel.
Therefore, it is necessary to a kind of display panels, to solve above-mentioned colour temperature difference problem.
Summary of the invention
The present invention provides a kind of display panel, by changing the aperture opening ratio of the sub-pixel of at least one color in design,
Gradually decrease display panel by the aperture opening ratio of the pixel in close to sources side region, and display panel is far from one side region of light source
The aperture opening ratio of pixel gradually increases, entire aobvious so as to reduce because pixel aperture ratio directly affects the colour temperature in display panel
Show the color temperature difference in panel, the display as caused by processing procedure fluctuation and light guide panel material characteristic in existing display panel is solved with this
The larger technical problem of color temperature difference in panel.
To solve the above problems, technical solution provided by the invention is as follows:
The present invention provides a kind of display panel, and the incident side of the display panel is provided with backlight module, the backlight mould
One end of group is provided with LED light source, and the display panel includes close to the first pixel region of the LED light source, far from described
The third pixel region of LED light source and the second pixel region of connection first pixel region and the third pixel region
Domain；Wherein,
The aperture opening ratio of the sub-pixel of at least one color in first pixel region is less than other sub-pixels；
The aperture opening ratio of the sub-pixel of at least one color in the third pixel region is greater than other sub-pixels；
To reduce by first pixel region of the display panel and the color temperature difference of the third pixel region.
According to one preferred embodiment of the present invention, the color temperature difference of the display panel overall region is reduced within 300K.
According to one preferred embodiment of the present invention, the display panel further includes having black matrix, and the black matrix is set to institute
State the gap location between sub-pixel；
In each pixel region, the black matrix between each same color sub-pixel it is of same size.
According to one preferred embodiment of the present invention, described between the blue subpixels in first pixel region
The width of black matrix is greater than the width of the black matrix between other sub-pixels, and the aperture opening ratio of the blue subpixels is more other
The aperture opening ratio of color sub-pixels is small.
According to one preferred embodiment of the present invention, in first pixel region, the aperture opening ratio edge of the blue subpixels
Successively decrease in the direction of the edge of the display panel to second pixel region.
According to one preferred embodiment of the present invention, the aperture opening ratios of the blue subpixels in first pixel region subtracts
Small range is 3%-7%.
According to one preferred embodiment of the present invention, described between the blue subpixels in the third pixel region
The width of black matrix is less than the width of the black matrix between other sub-pixels, and the aperture opening ratio of the blue subpixels is more other
The aperture opening ratio of color sub-pixels is big.
According to one preferred embodiment of the present invention, in the third pixel region, the aperture opening ratio edge of the blue subpixels
The direction at edge of second pixel region to the display panel is incremented by.
According to one preferred embodiment of the present invention, the increasing of the aperture opening ratio of the blue subpixels in the third pixel region
It is 3%-7% on a large scale.
Above-mentioned purpose according to the present invention proposes a kind of display device, including above display panel.
The invention has the benefit that compared to existing display panel and display device, display panel of the invention and
Display device controls the aperture opening ratio of at least one color sub-pixels by specifically changing the width of black matrix, makes display panel
Aperture opening ratio by the sub-pixel in close to sources side region gradually decreases, and sub-pixel of the display panel far from one side region of light source
Aperture opening ratio gradually increases, and since the aperture opening ratio of sub-pixel can directly affect the colour temperature of display panel, can control sub-pixel
Aperture opening ratio reduce the color temperature difference in entire display panel, while the light source side for backlight module of arranging in pairs or groups is to the change of opposite side colour temperature
Change, so that the whole homogeneity for improving coloration in display panel, can both compensate the light source side to opposite side of backlight module in this way
Color temperature difference, and do not influence penetrance, solved in existing display panel with this since processing procedure fluctuation and light guide panel material characteristic are made
At display panel in the excessive technical problem of color temperature difference.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of main view of display panel；
Fig. 2 a is the partial structural diagram in Fig. 1 at A-A`；
Fig. 2 b is the partial structural diagram in Fig. 1 at B-B`；
Fig. 2 c is the partial structural diagram in Fig. 1 at C-C`.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention is directed in existing display panel coloration in the panel as caused by processing procedure fluctuation and light guide panel material characteristic
Non-uniform technical problem, the present embodiment are able to solve the defect.
Display panel can be provided with backlight module (not shown) in incident side, and one end of the backlight module is provided with
LED light source.In the present embodiment, panel is divided into three pixel regions, as shown in Figure 1, lower section is the first pixel region in figure,
That is the area A-A`, first pixel region are that top is third pixel region, the i.e. area C-C`, institute in LED light source side, figure
Stating third pixel region is far from LED light source side, and the centre Fig. 1 is the second pixel region, the i.e. area B-B`, second pixel region
Domain connects first pixel region and second pixel region.
Fig. 2 a, Fig. 2 b and Fig. 2 c are the local structural graph of Fig. 1 everywhere, and Fig. 2 a is that the structure in first pixel region is shown
It is intended to, Fig. 2 b is the structural schematic diagram in second pixel region, and Fig. 2 c is the structural representation in the third pixel region
Figure.
The embodiment of the invention provides a kind of display panels, include the son of the multiple color including blue subpixels 201
Pixel, the aperture opening ratio of the blue subpixels 201 is less than the aperture opening ratio of other color sub-pixels, institute in first pixel region
The aperture opening ratio for stating the blue subpixels 201 in third pixel region is greater than the aperture opening ratio of other color sub-pixels.
The aperture opening ratio of usually control pixel can use BM mask set to realize, the present embodiment is by changing black matrix
202 width controls the aperture opening ratios of the blue subpixels 201, and in other embodiments, other methods can also be passed through
To control the aperture opening ratio of the blue subpixels 201.
And the present embodiment is the aperture opening ratio for only changing blue subpixels, but in other embodiments, it can be is changed other
The aperture opening ratio of color sub-pixels also can change the aperture opening ratio of more than one color sub-pixels, can be two kinds, three kinds or four kinds
The aperture opening ratio of color sub-pixels adjusts the knots modification of each color sub-pixels aperture opening ratio, to reduce the color temperature difference in display panel
?.
As shown in Figure 2 a, the black matrix 202 in first pixel region, between the blue subpixels 201
Width be greater than the width of the black matrix 202 between other color sub-pixels, the aperture opening ratios of the blue subpixels 201 compared with
The aperture opening ratio of other color sub-pixels is small.
Further, in first pixel region, the aperture opening ratio of the blue subpixels 201 is along the display panel
Successively decrease in the direction of edge to second pixel region.
The reduction range of the aperture opening ratio of the blue subpixels 201 in first pixel region is 3% to 7%, example
Such as, pixel arrangement is RGB arrangement, has blue subpixels 201 described in the first row in the edge bottom of first pixel region, the
The aperture opening ratio of blue subpixels 201 described in a line to line n has dropped compared with the aperture opening ratio for other color sub-pixels of going together
7%, and the aperture opening ratio of blue subpixels 201 described in line n to m row (m compared with the aperture opening ratio for other color sub-pixels of going together
> n), 6% is had dropped, and so on, i.e., the aperture opening ratios of the described blue subpixels 201 is along the edge of the display panel to described
Successively decrease in the direction of second pixel region.
Specifically, the width of the black matrix 202 between the blue subpixels 201 in first pixel region
Also it is incremented by, i.e., the aperture opening ratio of the described blue subpixels 201 is smaller, the black matrix 202 between the blue subpixels 201
Width is bigger.
As shown in Figure 2 c, the black matrix 202 in the third pixel region, between the blue subpixels 201
Width be less than the width of the black matrix 202 between other color sub-pixels, the aperture opening ratios of the blue subpixels 201 compared with
The aperture opening ratio of other color sub-pixels is big.
Further, in the third pixel region, the aperture opening ratio of the blue subpixels 201 is along second picture
The direction at plain region to the edge of the display panel is incremented by.
The increase range of the aperture opening ratio of the blue subpixels 201 in the third pixel region is 3% to 7%, example
Such as, pixel arrangement is RGB arrangement, has blue subpixels 201 described in the first row in the edge top of the third pixel region, the
The aperture opening ratio of blue subpixels 201 described in a line to line n improves compared with the aperture opening ratio for other color sub-pixels of going together
7%, and the aperture opening ratio of blue subpixels 201 described in line n to m row (m compared with the aperture opening ratio for other color sub-pixels of going together
> n), 6% is improved, and so on, i.e., the aperture opening ratio of the described blue subpixels 201 is along second pixel region to institute
The direction for stating the edge of display panel is incremented by.
Specifically, the width of the black matrix 202 between the blue subpixels 201 in the third pixel region
Successively decrease, i.e., the aperture opening ratio of the described blue subpixels 201 is bigger, the width of the black matrix 202 between the blue subpixels 201
It spends smaller.
The present invention does not limit pixel arrangements, and the rule that the aperture opening ratio of the sub-pixel increases or decreases in gradient is not
It limits, can be other any one gradient rules, as long as increasing or decreasing.
As shown in Figure 2 b, the black matrix 202 in second pixel region, between the blue subpixels 201
Width and other color sub-pixels between the black matrix 202 of same size, the aperture opening ratio of the blue subpixels 201
It is identical as the aperture opening ratio of other color sub-pixels.
Structure in second pixel region is identical as the partial structurtes in existing display panel.
A kind of colour system as defined in International Commission on Illumination is 1931-XYZ, wherein X, Y, Z are respectively tristimulus values,
Is defined as:
Wherein, S (λ) represents optical source wavelength；The colors such as representative close number；T (λ) represents light source transmission
Rate；Indicate normalization fixed number.
The relationship of chromaticity coordinate x, y and tristimulus values are as follows:
X=X/ (X+Y+Z) formula (2)
Y=Y/ (X+Y+Z) formula (3)
White point tristimulus values and RGB tristimulus values relationship are as follows:
WY=(RY+GY+BY)/3
WZ=1-WX-WY formula (4)
White point coordinates Wx and Wy can be released by above-mentioned formula are as follows:
Wx=WX/ (WX+WY+WZ) formula (5)
Wy=WY/ (WX+WY+WZ) formula (6)
In general, colour temperature will affect color developing effect, and the formula of colour temperature are as follows:
CT=437* (Wx-0.332)/(0.1858-Wy) ^3+3601* (Wx-0.332)/(0.1858-Wy) ^2+6861*
(Wx-0.332)/(0.1858-Wy)+5514.31 formula (7)
Formula (7) shows that the coordinate of white point determines the size of colour temperature.
And chromaticity coordinates x, y and R, the relationship of aperture opening ratio a, b, c of G, B are as follows:
Formula (8) and formula (9) are converted, can be obtained:
Wherein, R=RX+RY+RZ, G=GX+GY+GZ, B=BX+BY+BZ.
As shown from the above formula, colour temperature is related with white point coordinates, and white point coordinates are related with chromaticity coordinate, chromaticity coordinate with
RGB aperture opening ratio is related, therefore can adjust colour temperature by control pixel aperture ratio.
When changing the aperture opening ratio of the blue subpixels 201, enable to the display panel directly partially yellow or inclined
Indigo plant, in this way can be partially blue caused by the material property with light guide plate in backlight module or Huang offsets partially, to improve white picture
Under coloration homogeneity.
In the specific implementation, on the basis of the centre of the display panel, i.e., right on the basis of second pixel region
First pixel region is calculated with the white point coordinates in the third pixel region, and the value finally obtained is described
In one region: △ Wx, △ Wy=(0.003,0.005), and in the third region: △ Wx, △ Wy=(- 0.002 ,-
0.005) when, the value of general △ Wx and △ Wy is positive value, the region is partially yellow, when the value of △ Wx and △ Wy are negative value, the region
It is partially blue；And the decline of △ Wx and △ Wy often correspond to the reduction of color temperature difference.
For example, in first pixel region, the width of the black matrix 202 between the blue subpixels 201
Larger, when the aperture opening ratio of the blue subpixels 201 declines about 4%, the coloration in first pixel region can Huang 5% partially.
In another example in the third pixel region, the width of the black matrix 202 between the blue subpixels 201
Degree is smaller, and when the aperture opening ratio of the blue subpixels 201 improves about 4%, the coloration in the third pixel region can be partially blue
5%.
The present embodiment changes the aperture opening ratio of the blue subpixels 201, and knots modification 3%-7%, this numerical value is for institute
The influence of the penetrance of display panel is stated less than 1%, therefore the influence very little to the brightness homogeneity of the display panel, it will not
There is the visual uneven situation of brightness.
Due to the material property of light guide plate in backlight module, color temperature difference can be made in 1000K or so, by changing at least one
The aperture opening ratio of kind color sub-pixels, and the variable quantity of aperture opening ratio is trapezoidal, can reduce the color temperature difference in entire display panel, most
When excellent, color temperature difference can be dropped within 300K.
Working principle of the working principle of the display device of this preferred embodiment with the display panel of above preferred embodiment
Unanimously, the working principle for specifically referring to the display panel of above preferred embodiment, no longer repeats herein.
The invention has the benefit that compared to existing display panel and display device, display panel of the invention and
Display device controls the aperture opening ratio of at least one color sub-pixels by specifically changing the width of black matrix, makes display panel
Aperture opening ratio by the sub-pixel in close to sources side region gradually decreases, and sub-pixel of the display panel far from one side region of light source
Aperture opening ratio gradually increases, and since the aperture opening ratio of sub-pixel can directly affect the colour temperature of display panel, can control sub-pixel
Aperture opening ratio reduce the color temperature difference in entire display panel, while the light source side for backlight module of arranging in pairs or groups is to the change of opposite side colour temperature
Change, so that the whole homogeneity for improving coloration in display panel, can both compensate the light source side to opposite side of backlight module in this way
Color temperature difference, and do not influence penetrance, solved in existing display panel with this since processing procedure fluctuation and light guide panel material characteristic are made
At panel in the excessive technical problem of color temperature difference.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of display panel, it is characterised in that: the incident side of the display panel is provided with backlight module, the backlight module
One end be provided with LED light source, the display panel includes close to the first pixel region of the LED light source, far from the LED
The third pixel region of light source and the second pixel region of connection first pixel region and the third pixel region；Its
In,
The aperture opening ratio of the sub-pixel of at least one color in first pixel region is less than other sub-pixels；
The aperture opening ratio of the sub-pixel of at least one color in the third pixel region is greater than other sub-pixels；
To reduce by first pixel region of the display panel and the color temperature difference of the third pixel region.
2. display panel according to claim 1, which is characterized in that the color temperature difference of the display panel overall region reduces
To 300K.
3. display panel according to claim 2, which is characterized in that the display panel further includes having black matrix, described
Black matrix is set to the gap location between the sub-pixel；
In each pixel region, the black matrix between each same color sub-pixel it is of same size.
4. display panel according to claim 3, which is characterized in that in first pixel region, blue
The width of the black matrix between pixel is greater than the width of the black matrix between other sub-pixels, the blue subpixels
Aperture opening ratio it is small compared with the aperture opening ratio of other color sub-pixels.
5. display panel according to claim 4, which is characterized in that in first pixel region, blue
The aperture opening ratio of pixel successively decreases along the direction of the edge of the display panel to second pixel region.
6. display panel according to claim 5, which is characterized in that the sub- picture of blue in first pixel region
The reduction range of the aperture opening ratio of element is 3%-7%.
7. display panel according to claim 6, which is characterized in that in the third pixel region, blue
The width of the black matrix between pixel is less than the width of the black matrix between other sub-pixels, the blue subpixels
Aperture opening ratio it is big compared with the aperture opening ratio of other color sub-pixels.
8. display panel according to claim 7, which is characterized in that in the third pixel region, blue
The direction at edge of the aperture opening ratio of pixel along second pixel region to the display panel is incremented by.
9. display panel according to claim 8, which is characterized in that the sub- picture of blue in the third pixel region
The increase range of the aperture opening ratio of element is 3%-7%.
10. a kind of display device, which is characterized in that include display panel, the display panel is appointed for the claims 1-9
Display panel described in one.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021103159A1 (en) * | 2019-11-26 | 2021-06-03 | 武汉华星光电技术有限公司 | Display panel and display device |
| CN113206125A (en) * | 2020-05-22 | 2021-08-03 | 广东聚华印刷显示技术有限公司 | Display panel and manufacturing method thereof, mask plate and light-emitting device |
| CN115240609A (en) * | 2022-07-21 | 2022-10-25 | 深圳市华星光电半导体显示技术有限公司 | Method for calculating chromatic value of white picture of display device |
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Application publication date: 20190607 |