CN204479779U - A kind of brightness enhancement film with pyramid structure - Google Patents
A kind of brightness enhancement film with pyramid structure Download PDFInfo
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- CN204479779U CN204479779U CN201520047712.9U CN201520047712U CN204479779U CN 204479779 U CN204479779 U CN 204479779U CN 201520047712 U CN201520047712 U CN 201520047712U CN 204479779 U CN204479779 U CN 204479779U
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Abstract
The utility model relates to the brightness enhancement film in a kind of LCD backlight module, be specifically related to a kind of brightness enhancement film with pyramid structure, comprise transparent base and pyramidal structure layer, transparent base comprises the first optical surface and the second optical surface, second optical surface is positioned at the back side of the first optical surface, described pyramidal structure layer is arranged at the first optical surface, and pyramidal structure layer is made up of some equally distributed pyramid monomers.Brightness enhancement film of the present utility model is by being provided with the pyramidal structure layer of pyramid structure, and energy is the multi-direction optical gain effect in implementation space simultaneously, and the basis of individual brightness enhancement film is at utmost improved show uniformity and the optical gain effect of backlight module.Brightness enhancement film of the present utility model can replace multiple brightness enhancement film in backlight module, reduces the usage quantity of brightness enhancement film, reduces the cost of backlight module.
Description
Technical field
The utility model relates to the brightness enhancement film in a kind of LCD backlight module, is specifically related to a kind of brightness enhancement film with pyramid structure.
Background technology
Liquid crystal display has the advantages such as energy consumption is low, lightweight, radiationless, flicker free, it is the display of main flow on the market at present, but liquid crystal is as the passive luminescent material of one, need to rely on backlight module could realize the display of image, in general, backlight module is made up of light source, reflectance coating, light guide plate, optics module, and wherein optics module comprises lower diffusion barrier, lower brightness enhancement film, upper brightness enhancement film, upper diffusion barrier; Pointolite or line source can be changed into uniform area source by light guide plate and diffusion barrier, and the light originally dispersed can be concentrated to axial direction by brightness enhancement film, thus improve the positive apparent brightness of liquid crystal display.Maximize to make axial brightness, the brightness enhancement film up and down that the backlight module of current main flow all adopts prism structural layer in 90 ° is mutually as brightness enhancement film group, light is after lower brightness enhancement film, be concentrated in one direction ± angular field of view of 35 ° in, through upper brightness enhancement film, light is pooled in vertical direction again ± angular field of view of 35 ° in, thus realize twice blast, gain effect improves greatly.But move towards single due to brightness enhancement film prism structural layer, a brightness enhancement film is difficult to the luminance gain of implementation space all directions, in order to improve the homogeneity of backlight module display and make brightening effect maximize, general backlight module all needs the brightness enhancement film of use more than two, this not only adds the thickness of blooming group, be unfavorable for the lightening of optics module, also greatly increases cost.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the purpose of this utility model is to provide a kind of brightness enhancement film with pyramid structure, this brightness enhancement film energy multi-direction optical gain effect in implementation space simultaneously, thus the quantity that in backlight module, brightness enhancement film uses can be reduced, the thickness of thinning optics module, reduces the cost of backlight module.
The purpose of this utility model is achieved through the following technical solutions: a kind of brightness enhancement film with pyramid structure, comprise transparent base and pyramidal structure layer, transparent base comprises the first optical surface and the second optical surface, second optical surface is positioned at the back side of the first optical surface, described pyramidal structure layer is arranged at the first optical surface, and pyramidal structure layer is made up of some equally distributed pyramid monomers.
Further, the bottom surface of described pyramid monomer is regular polygon, and the xsect of pyramid monomer is isosceles triangle, and the corner angle of isosceles triangle is 85-95 °.
Further, the base length of side of described pyramid monomer is 24-50 μm, and the height of pyramid monomer is 12-25 μm.
Further, the drift angle of described pyramid monomer is tip-angled shape.
Further, the drift angle of described pyramid monomer is arc-shaped, and the arc radius of arc-shaped drift angle is 3-8 μm.
Further, the end face of described pyramid monomer is plane, and end face is the regular polygon plane being parallel to pyramid monomer bottom surface, and the length of side of regular polygon plane is 3-8 μm.
Further, described transparent base is PET film, PMMA film or PC film, and its thickness is 30-150 μm.
Further, described pyramidal structure layer is acrylic Acid UV curing resin layer.
The beneficial effects of the utility model are: brightness enhancement film of the present utility model is by being provided with the pyramidal structure layer of pyramid structure, energy is the multi-direction optical gain effect in implementation space simultaneously, and the basis of individual brightness enhancement film is at utmost improved show uniformity and the optical gain effect of backlight module.
Brightness enhancement film of the present utility model can replace multiple brightness enhancement film in backlight module, reduces the usage quantity of brightness enhancement film, reduces the cost of backlight module.
Accompanying drawing explanation
Fig. 1 is the structural representation of down straight aphototropism mode set.
Fig. 2 is perspective view of the present utility model.
Fig. 3 is vertical view of the present utility model.
Fig. 4 is the structural representation of the utility model embodiment one.
Fig. 5 is light intensity of the present utility model-level angle distribution plan.
Fig. 6 is light intensity of the present utility model-vertical angle distribution plan.
Fig. 7 is the structural representation of the utility model embodiment two.
Fig. 8 is the structural representation of the utility model embodiment three.
Reference numeral is: 10-reflectance coating, 11-light source, 12-blooming group, 120-diffuser plate, 121-lower diffusion barrier, 122-lower brightness enhancement film, 123-upper brightness enhancement film, 124-above diffusion barrier, 40-transparent base, 41-pyramidal structure layer, 411-pyramid monomer.
Embodiment
For the ease of the understanding of those skilled in the art, be further described the utility model below in conjunction with embodiment and accompanying drawing 1-8, the content that embodiment is mentioned is not to restriction of the present utility model.
Embodiment one
Be the embodiment one of a kind of brightness enhancement film with pyramid structure described in the utility model as shown in figures 1 to 6, comprise transparent base 40 and pyramidal structure layer 41, transparent base 40 comprises the first optical surface and the second optical surface, second optical surface is positioned at the back side of the first optical surface, described pyramidal structure layer 41 is arranged at the first optical surface, and pyramidal structure layer 41 is made up of some equally distributed pyramid monomers 411.
Brightness enhancement film of the present utility model is by being provided with the pyramidal structure layer 41 of pyramid structure, and energy is the multi-direction optical gain effect in implementation space simultaneously, and the basis of individual brightness enhancement film is at utmost improved show uniformity and the optical gain effect of backlight module.
Brightness enhancement film of the present utility model can replace multiple brightness enhancement film in backlight module, reduces the usage quantity of brightness enhancement film, reduces the cost of backlight module.
In the present embodiment, the bottom surface of described pyramid monomer 411 is regular polygon, and the xsect of pyramid monomer 411 is isosceles triangle, and the corner angle α of isosceles triangle is 85-95 °.The utility model adopts the pyramid of regular polygon, and gain effect is good, and when the xsect of pyramid monomer 411 is isosceles triangle, gain effect is better.For making the utility model reach best result of use, the corner angle α of isosceles triangle is 90 °.
In the present embodiment, the base length of side d2 of described pyramid monomer 411 is 24-50 μm, and the height d1 of pyramid monomer 411 is 12-25 μm.For making the utility model reach best result of use, the base length of side d2 of described pyramid monomer 411 is 36 μm, and the height d1 of pyramid monomer 411 is 18 μm.
In the present embodiment, the drift angle of described pyramid monomer 411 is tip-angled shape.Drift angle be tip-angled shape be arranged so that gain effect of the present utility model is good.
In the present embodiment, described transparent base 40 is PET film, PMMA film or PC film, and its thickness d 0 is 30-150 μm.For making the utility model reach best result of use, the thickness d 0 of described transparent base 40 is 90 μm.
In the present embodiment, described pyramidal structure layer 41 is acrylic Acid UV curing resin layer.Described pyramidal structure layer 41 forms by patterned roll transfer printing and through UV is light source curing, and coating method is roller type coating or drips the coating of glue formula; Described patterned roll is metal wheel, and the layers of copper of electroplating surface 100-500 μm thickness or nickel dam, surface micro-structure processes through the turning of single-point diamond cutter or laser forming.
The structural representation of down straight aphototropism mode set as shown in Figure 1, it comprises the reflectance coating 10, light source 11 and the blooming group 12 that set gradually from the bottom up, wherein, blooming group 12 comprises the diffuser plate 120, lower diffusion barrier 121, lower brightness enhancement film 122, upper brightness enhancement film 123 and the upper diffusion barrier 124 that set gradually from the bottom up.This backlight module is mainly the homogeneous lighting source that display panels provides enough brightness, homogeneous degree provides primarily of diffuser plate 120, lower diffusion barrier 121 and upper diffusion barrier 124, lower brightness enhancement film 123 and upper brightness enhancement film 124 can improve the axial brightness of homogeneous light source, save electric energy, extend service time of battery.
Fig. 5 and Fig. 6 is the light intensity-angular distribution figure of brightness enhancement film, and wherein, Fig. 5 represents light intensity-level angle distribution plan, and Fig. 6 represents light intensity-vertical angle distribution plan.Wherein, light intensity-angular distribution figure, One BEF-1 curve that Display curve represents without brightness enhancement film represents that light intensity-angular distribution figure, the One BEF-2 curve adding traditional brightness enhancement film represents the light intensity-angular distribution figure adding the utility model brightness enhancement film.Brightness enhancement film of the present utility model replaces the upper brightness enhancement film 123 in traditional optical module 12.
From Fig. 5 and Fig. 6, add the axial intensity of brightness enhancement film than not adding improve of brightness enhancement film, and visual angle reduces, tradition brightness enhancement film has the effect at the visual angle in compression level direction, but less to the visual angle compression of vertical direction, and brightness enhancement film of the present utility model all has compression to light with vertical direction in the horizontal direction, the single-view luminance gain of relatively traditional brightness enhancement film, brightness enhancement film of the present utility model can reach the effect of various visual angles luminance gain, and action space angular range is wider.Down straight aphototropism mode set axial intensity gain effect is specifically as shown in table 1.
Table 1
| Film group | Display | One BEF | Two BEF-1 |
| Axial intensity (normalization) | 1 | 1.2 | 1.64 |
As shown in Table 1, compare traditional brightness enhancement film, brightness enhancement film of the present utility model is when monolithic uses, and its gain effect is more obvious.
Embodiment two
Be illustrated in figure 7 the embodiment two of a kind of brightness enhancement film with pyramid structure described in the utility model, be with the difference of above-described embodiment one: the drift angle of described pyramid monomer 411 is arc-shaped, the arc radius of arc-shaped drift angle is 3-8 μm.Drift angle be arc-shaped be arranged so that of the present utility model in use more wear-resisting, and display brightness is relaxed more.For making the utility model reach best result of use, the arc radius of arc-shaped drift angle is 5 μm.
Embodiment three
Be illustrated in figure 8 the embodiment three of a kind of brightness enhancement film with pyramid structure described in the utility model, be with the difference of above-described embodiment one: the end face of described pyramid monomer 411 is plane, end face is the regular polygon plane being parallel to pyramid monomer 411 bottom surface, and the length of side of regular polygon plane is 3-8 μm.End face is plane be arranged so that the utility model is in use more wear-resisting, and display brightness is relaxed more.For making the utility model reach best result of use, the length of side of regular polygon plane is 5 μm.
Above-described embodiment is the utility model preferably implementation, and in addition, the utility model can also realize by alternate manner, and any apparent replacement is all within protection domain of the present utility model without departing from the concept of the premise utility.
Claims (8)
1. the brightness enhancement film with pyramid structure, it is characterized in that: comprise transparent base and pyramidal structure layer, transparent base comprises the first optical surface and the second optical surface, second optical surface is positioned at the back side of the first optical surface, described pyramidal structure layer is arranged at the first optical surface, and pyramidal structure layer is made up of some equally distributed pyramid monomers.
2. a kind of brightness enhancement film with pyramid structure according to claim 1, it is characterized in that: the bottom surface of described pyramid monomer is regular polygon, the xsect of pyramid monomer is isosceles triangle, and the corner angle of isosceles triangle is 85-95 °.
3. a kind of brightness enhancement film with pyramid structure according to claim 1, is characterized in that: the base length of side of described pyramid monomer is 24-50 μm, and the height of pyramid monomer is 12-25 μm.
4. a kind of brightness enhancement film with pyramid structure according to claim 1, is characterized in that: the drift angle of described pyramid monomer is tip-angled shape.
5. a kind of brightness enhancement film with pyramid structure according to claim 1, is characterized in that: the drift angle of described pyramid monomer is arc-shaped, the arc radius of arc-shaped drift angle is 3-8 μm.
6. a kind of brightness enhancement film with pyramid structure according to claim 1, it is characterized in that: the end face of described pyramid monomer is plane, end face is the regular polygon plane being parallel to pyramid monomer bottom surface, the length of side of regular polygon plane is 3-8 μm.
7. a kind of brightness enhancement film with pyramid structure according to claim 1, is characterized in that: described transparent base is PET film, PMMA film or PC film, and its thickness is 30-150 μm.
8. a kind of brightness enhancement film with pyramid structure according to claim 1, is characterized in that: described pyramidal structure layer is acrylic Acid UV curing resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047712.9U CN204479779U (en) | 2015-01-23 | 2015-01-23 | A kind of brightness enhancement film with pyramid structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520047712.9U CN204479779U (en) | 2015-01-23 | 2015-01-23 | A kind of brightness enhancement film with pyramid structure |
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| CN204479779U true CN204479779U (en) | 2015-07-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614791A (en) * | 2015-01-23 | 2015-05-13 | 东莞市纳利光学材料有限公司 | Birghtness enhancement film with pyramid structure and manufacture method thereof |
| CN106646722A (en) * | 2016-12-01 | 2017-05-10 | 广州创维平面显示科技有限公司 | Glass light guide plate and manufacturing method thereof |
| CN106680915A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightening film applied to backlight module and backlight module |
| CN110088673A (en) * | 2019-03-11 | 2019-08-02 | 深圳阜时科技有限公司 | A kind of optical film layer structure, backlight module, display device and electronic equipment |
| CN111435204A (en) * | 2019-06-28 | 2020-07-21 | 宁波激智科技股份有限公司 | Quadrangular frustum pyramid brightness enhancement film and preparation method thereof |
-
2015
- 2015-01-23 CN CN201520047712.9U patent/CN204479779U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614791A (en) * | 2015-01-23 | 2015-05-13 | 东莞市纳利光学材料有限公司 | Birghtness enhancement film with pyramid structure and manufacture method thereof |
| CN106680915A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Composite brightening film applied to backlight module and backlight module |
| CN106646722A (en) * | 2016-12-01 | 2017-05-10 | 广州创维平面显示科技有限公司 | Glass light guide plate and manufacturing method thereof |
| CN106646722B (en) * | 2016-12-01 | 2019-07-02 | 广州创维平面显示科技有限公司 | A kind of glass light guide plate and preparation method thereof |
| CN110088673A (en) * | 2019-03-11 | 2019-08-02 | 深圳阜时科技有限公司 | A kind of optical film layer structure, backlight module, display device and electronic equipment |
| WO2020181446A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳阜时科技有限公司 | Optical film layer structure, backlight module, display device, and electronic apparatus |
| CN110088673B (en) * | 2019-03-11 | 2023-03-28 | 深圳阜时科技有限公司 | Optical film layer structure, backlight module, display device and electronic equipment |
| CN111435204A (en) * | 2019-06-28 | 2020-07-21 | 宁波激智科技股份有限公司 | Quadrangular frustum pyramid brightness enhancement film and preparation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20200123 |