CN104977640B - Brightness enhancement film, backlight module and display device - Google Patents
Brightness enhancement film, backlight module and display device Download PDFInfo
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- CN104977640B CN104977640B CN201510484519.6A CN201510484519A CN104977640B CN 104977640 B CN104977640 B CN 104977640B CN 201510484519 A CN201510484519 A CN 201510484519A CN 104977640 B CN104977640 B CN 104977640B
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- enhancement film
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Abstract
The present invention provides a kind of brightness enhancement film, backlight module and display devices, belong to field of display technology.Wherein, the filter membranous layer of the brightness enhancement film is made of a kind of filter coating of color or is made of two different colors of filter coating.Technical solution of the present invention can meet different white light chromaticity coordinates requirements by adjusting brightness enhancement film, and can guarantee the brightness of display device.
Description
Technical field
The present invention relates to field of display technology, a kind of brightness enhancement film, backlight module and display device are particularly related to.
Background technique
Liquid crystal display (LCD, Liquid Crystal Display) has become current most common display technology.
LCD is the display device of non-luminescent property, needs to can be only achieved display function, the main member packet of backlight module by backlight module
It includes: light source, light guide plate, all kinds of optical diaphragms.The optical diaphragm of backlight module mainly includes reflectance coating, diffusion barrier and brightness enhancement film three
Kind.
The effect of brightness enhancement film is that have adjusting to the light except observer visual angle to observer's angular field of view
Light-focusing function improves light utilization.Using the total reflection effect to light, it is emitted the light for meeting certain angle, i.e.,
The shooting angle for controlling light, the light for not meeting angle return to backlight module after reflecting, are utilized again.It is emitted in this way
Light major part integrated distribution improves the brightness of centre visual angle in the range of ± 35 ° (relative normal direction), only small portion
The shooting angle of light splitter is greater than 35 °.Brightness enhancement film generally comprise it is hundreds of be alternately superimposed on have optically anisotropic first
Film layer and have optically isotropic second film layer, further include the filter coating of multiple and different colors.
The white light chromaticity coordinates of liquid crystal display is generally by the glazed area ratio of RGB subpixel area and the spectrum of backlight
It determines, in order to meet the requirement of client's different product specification, generally requires the white light chromaticity coordinates of adjustment liquid crystal display.Other
In the case that condition is certain, by adjusting black matrix figure, and then the glazed area ratio for adjusting RGB subpixel area is adjustment liquid
One of the conventional method of the white light chromaticity coordinates of crystal display.In this approach, the transparent surface of the maximum sub-pixel of glazed area
Product is limited to pixel size, technological ability etc. and is unable to adjust, and can only realize RGB by reducing the glazed area of other sub-pixels
The different glazed area ratios of pixel, this reduces the brightness of display.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of brightness enhancement film, backlight module and display devices, can pass through tune
Whole brightness enhancement film meets different white light chromaticity coordinates requirements, and can guarantee the brightness of display device.
In order to solve the above technical problems, the embodiment of the present invention offer technical solution is as follows:
On the one hand, a kind of brightness enhancement film is provided, the filter membranous layer of the brightness enhancement film be made of a kind of filter coating of color or
It is made of two different colors of filter coating.
Further, the filter membranous layer of the brightness enhancement film is by green filter film, red filter film and blue filter film
Any one or any two composition.
Further, the filter membranous layer of the brightness enhancement film is by green filter film, red filter film and blue filter film
Any one composition.
Further, the filter membranous layer of the brightness enhancement film is made of green filter film and blue filter film.
Further, the filter membranous layer of the brightness enhancement film is made of green filter film and red filter film.
Further, the filter membranous layer of the brightness enhancement film is made of red filter film and blue filter film.
Further, the thickness for two filter coatings that the filter membranous layer of the brightness enhancement film includes is equal.
Further, the brightness enhancement film further includes the uniaxiality optical film and biaxiality optics of the alternately laminated setting of multiple groups
Film.
The embodiment of the invention also provides a kind of backlight modules, including brightness enhancement film as described above.
The embodiment of the invention also provides a kind of display devices, including backlight module as described above.
The embodiment of the present invention has the advantages that
In above scheme, the filter membranous layer of brightness enhancement film is made of a kind of filter coating of color or by two different colors of
Filter coating composition, the chromaticity coordinates of brightness enhancement film be no longer it is fixed, the chromaticity coordinates of brightness enhancement film with the composition variation of filter membranous layer and
Change, the chromaticity coordinates of brightness enhancement film can be changed in this way by adjusting the composition of filter membranous layer, to meet display device difference
The requirement of white light chromaticity coordinates, and will not influence the brightness of display device, can guarantee the brightness of display device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the filter membranous layer of brightness enhancement film in the prior art；
Fig. 2 is that the filter membranous layer of brightness enhancement film of the embodiment of the present invention only includes the schematic diagram of red filter film；
Fig. 3 is that the filter membranous layer of brightness enhancement film of the embodiment of the present invention only includes the schematic diagram of green filter film；
Fig. 4 is that the filter membranous layer of brightness enhancement film of the embodiment of the present invention only includes the schematic diagram of blue filter film；
Fig. 5 is the signal that the filter membranous layer of brightness enhancement film of the embodiment of the present invention is made of red filter film and green filter film
Figure；.
Fig. 6 is the filter membranous layer of brightness enhancement film of the embodiment of the present invention by the schematic diagram of blue filter film and green filter film；
Fig. 7 is the signal that the filter membranous layer of brightness enhancement film of the embodiment of the present invention is made of red filter film and green filter film
Figure.
Appended drawing reference
1 red filter film, 2 green filter film, 3 blue filter film
Specific embodiment
To keep the embodiment of the present invention technical problems to be solved, technical solution and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
The embodiment of the present invention in the prior art adjust liquid crystal display white light chromaticity coordinates when, often will affect
The problem of brightness of liquid crystal display, provides a kind of brightness enhancement film, backlight module and display device, can be full by adjusting brightness enhancement film
The different white light chromaticity coordinates requirement of foot, and can guarantee the brightness of display device.
Embodiment one
Present embodiments provide a kind of brightness enhancement film, the filter membranous layer of the brightness enhancement film be made of a kind of filter coating of color or
Person is made of two different colors of filter coating.
In the present embodiment, the filter membranous layer of brightness enhancement film is made of a kind of filter coating of color or by two different colors of
Filter coating composition, the chromaticity coordinates of brightness enhancement film be no longer it is fixed, the chromaticity coordinates of brightness enhancement film with the composition variation of filter membranous layer and
Change, the chromaticity coordinates of brightness enhancement film can be changed in this way by adjusting the composition of filter membranous layer, to meet display device difference
The requirement of white light chromaticity coordinates, and will not influence the brightness of display device, can guarantee the brightness of display device.
Further, the filter membranous layer of brightness enhancement film can be by green filter film, red filter film and blue filter film
Any one or any two composition, the filter membranous layer of brightness enhancement film by green filter film, blue filter film and red is filtered in the prior art
Light film composition, the thickness of green filter film, blue filter film and red filter film is equal, and therefore, the chromaticity coordinates of brightness enhancement film is solid
Fixed, in the present embodiment, the filter membranous layer of brightness enhancement film is by any of green filter film, red filter film and blue filter film
Or any two compositions, then the chromaticity coordinates of brightness enhancement film will change.
Specifically, the filter membranous layer of brightness enhancement film can be by appointing in green filter film, red filter film and blue filter film
One composition；Further, the filter membranous layer of brightness enhancement film can also be made of green filter film and blue filter film；Alternatively, increasing
The filter membranous layer of bright film is made of green filter film and red filter film；Alternatively, the filter membranous layer of brightness enhancement film is by red filter film
It is formed with blue filter film.Specifically, the chromaticity coordinates that can according to need is adjusted the composition of filter membranous layer.
Further, in addition to filter membranous layer, brightness enhancement film further includes the uniaxiality optical film of the alternately laminated setting of multiple groups and double
Axis optical film is arranged alternately by uniaxiality optical film and biaxiality optical film, can control the shooting angle of light, makes to accord with
The light of close angle degree returns to backlight module after reflecting, and is utilized again, to improve the utilization rate of light.
Embodiment two
The present embodiment additionally provides a kind of backlight module, including brightness enhancement film as described above, further includes backlight, light guide plate
Deng, it is made of due to the filter membranous layer of brightness enhancement film a kind of filter coating of color or is made of two different colors of filter coating,
The chromaticity coordinates of brightness enhancement film be no longer it is fixed, the chromaticity coordinates of brightness enhancement film changes as the composition of filter membranous layer changes, and in this way may be used
To change the chromaticity coordinates of backlight module by adjusting forming for filter membranous layer, sat to meet the different white color of display device
Mark requires, and will not influence the brightness of display device, can guarantee the brightness of display device.
Embodiment three
The embodiment of the invention also provides a kind of display device, including backlight module as described above and display panel, by
The filter membranous layer of brightness enhancement film is made of a kind of filter coating of color or by two different colors of filter coating in backlight module
Composition, the chromaticity coordinates of backlight module be no longer it is fixed, the chromaticity coordinates of backlight module changes as the composition of filter membranous layer changes
Become, the chromaticity coordinates of display device can be changed in this way by adjusting the composition of filter membranous layer, to meet display device difference
The requirement of white light chromaticity coordinates, and will not influence the brightness of display device, can guarantee the brightness of display device.
Example IV
As shown in Figure 1, in the prior art, the filter membranous layer of brightness enhancement film is by green filter film 2, blue filter film 3 and red
Filter coating 1 forms, and green filter film 2, blue filter film 3 are equal with the thickness of red filter film 1, therefore, brightness enhancement film
Chromaticity coordinates is fixed.
In order to meet different white light chromaticity coordinates requirements, in the present embodiment, the filter membranous layer of brightness enhancement film is filtered by green
Any of light film 2, red filter film 1 and blue filter film 3 or any two compositions.
As shown in Fig. 2, the filter membranous layer of brightness enhancement film can only include red filter film 1, the blast is used in backlight module
When film, the white light coordinate of backlight module will change to red-side, and then the white light of the display device using the backlight module
Coordinate will also change to red-side.
As shown in figure 3, the filter membranous layer of brightness enhancement film can also only include green filter film 2, the increasing is used in backlight module
When bright film, the white light coordinate of backlight module will change to green side, and then the white of the display device using the backlight module
Light coordinate will also change to green side.
As shown in figure 4, the filter membranous layer of brightness enhancement film can also only include blue filter film 3, the increasing is used in backlight module
When bright film, the white light coordinate of backlight module will change to blue side, and then the white of the display device using the backlight module
Light coordinate will also change to blue side.
Further, the filter membranous layer of brightness enhancement film can also be by green filter film, red filter film and blue filter film
Any two composition:
As shown in figure 5, the filter membranous layer of brightness enhancement film can be made of red filter film 1 and green filter film 2, in backlight mould
When group is using the brightness enhancement film, the white light coordinate of backlight module will be to the variation of red and green side, and then uses the backlight module
The white light coordinate of display device also will be to the variation of red and green side.
As shown in fig. 6, the filter membranous layer of brightness enhancement film can be made of green filter film 2 and blue filter film 3, in backlight mould
When group is using the brightness enhancement film, the white light coordinate of backlight module will change to green and blue side, and then use the backlight module
The white light coordinate of display device will also change to green and blue side.
As shown in fig. 7, the filter membranous layer of brightness enhancement film can be made of red filter film 1 and blue filter film 3, in backlight mould
When group is using the brightness enhancement film, the white light coordinate of backlight module will change to red and blue side, and then use the backlight module
The white light coordinate of display device will also change to red and blue side.
Further, when the filter membranous layer of brightness enhancement film includes the filter coating of two colors, the thickness of two filter coatings
It is equal, the variation of the chromaticity coordinates of brightness enhancement film can be preferably controlled in this way.
Further, in addition to filter membranous layer, brightness enhancement film further includes the uniaxiality optical film of the alternately laminated setting of multiple groups and double
Axis optical film is arranged alternately by uniaxiality optical film and biaxiality optical film, can control the shooting angle of light, makes to accord with
The light of close angle degree returns to backlight module after reflecting, and is utilized again, to improve the utilization rate of light.
The multiplicity of the chromaticity coordinates of brightness enhancement film may be implemented by adjusting the composition of the filter membranous layer of brightness enhancement film in the present embodiment
Change, in this way when backlight module there are different white color position demands, the other parts for changing backlight module can not had to, only needed
Corresponding brightness enhancement film is selected, is realized simple；Further, when display device has different white color position demands,
The other parts for changing display device can not be had to, it is only necessary to select corresponding backlight module, realize simple.And due to
White light chromaticity coordinates is adjusted without the glazed area by adjusting subpixel area, therefore will not influence the brightness of display device,
It can guarantee the display brightness of display device.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of brightness enhancement film, which is characterized in that the filter membranous layer of the brightness enhancement film is made of two different colors of filter coating, institute
The uniaxiality optical film and biaxiality optical film that brightness enhancement film further includes the alternately laminated setting of multiple groups are stated, the uniaxiality optics is passed through
Film and the biaxiality optical film are arranged alternately, and can control the shooting angle of light.
2. brightness enhancement film according to claim 1, which is characterized in that the filter membranous layer of the brightness enhancement film by green filter film,
Any two compositions in red filter film and blue filter film.
3. brightness enhancement film according to claim 2, which is characterized in that the filter membranous layer of the brightness enhancement film by green filter film and
Blue filter film composition.
4. brightness enhancement film according to claim 2, which is characterized in that the filter membranous layer of the brightness enhancement film by green filter film and
Red filter film composition.
5. brightness enhancement film according to claim 2, which is characterized in that the filter membranous layer of the brightness enhancement film by red filter film and
Blue filter film composition.
6. the brightness enhancement film according to any one of claim 3-5, which is characterized in that the filter membranous layer of the brightness enhancement film includes
Two filter coatings thickness it is equal.
7. a kind of backlight module, which is characterized in that including brightness enhancement film such as of any of claims 1-6.
8. a kind of display device, which is characterized in that according to backlight module as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484519.6A CN104977640B (en) | 2015-08-07 | 2015-08-07 | Brightness enhancement film, backlight module and display device |
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|---|---|---|---|
| CN201510484519.6A CN104977640B (en) | 2015-08-07 | 2015-08-07 | Brightness enhancement film, backlight module and display device |
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| Publication Number | Publication Date |
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| CN104977640A CN104977640A (en) | 2015-10-14 |
| CN104977640B true CN104977640B (en) | 2019-06-04 |
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| CN201510484519.6A Expired - Fee Related CN104977640B (en) | 2015-08-07 | 2015-08-07 | Brightness enhancement film, backlight module and display device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177708Y (en) * | 2007-11-27 | 2009-01-07 | 陈丽雪 | Liquid crystal construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4124186B2 (en) * | 2004-09-06 | 2008-07-23 | ソニー株式会社 | Liquid crystal display |
| CN101216634A (en) * | 2008-01-10 | 2008-07-09 | 友达光电股份有限公司 | Display apparatus and its optical film preparation method |
| CN204405884U (en) * | 2014-05-20 | 2015-06-17 | 太湖金张科技股份有限公司 | A kind of obstruct blue light hardening resin film |
| CN204405878U (en) * | 2014-12-11 | 2015-06-17 | 太湖金张科技股份有限公司 | A kind of blue light and ultraviolet-resistant optics diffusion structure and backlight device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177708Y (en) * | 2007-11-27 | 2009-01-07 | 陈丽雪 | Liquid crystal construction |
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