CN209264992U - A kind of composite membrane - Google Patents
A kind of composite membrane Download PDFInfo
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- CN209264992U CN209264992U CN201821515055.6U CN201821515055U CN209264992U CN 209264992 U CN209264992 U CN 209264992U CN 201821515055 U CN201821515055 U CN 201821515055U CN 209264992 U CN209264992 U CN 209264992U
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- protective film
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- composite membrane
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Abstract
The utility model discloses a kind of composite membrane, including brightness enhancement film and extrusion type protective film, brightness enhancement film includes substrate and the prism layer positioned at substrate side, and extrusion type protective film is located at side of the prism layer far from substrate, contains diffusion particle in extrusion type protective film.Replace original diffusion barrier by using extrusion type protective film, there is no points of the substrate layer of diffusion barrier and diffusion layer, and the use for reducing material of amplitude peak reduces the complexity of making technology, and the integral thickness of composite membrane is thinned.
Description
Technical field
The utility model belongs to optics technical field of membrane, and in particular to a kind of composite membrane.
Background technique
General combined type brightness enhancement film or DOP optical film, diffusion barrier are attached on brightness enhancement film, way is to make respectively
Make diffusion barrier and brightness enhancement film, is stained with glutinous layer in diffusion barrier bottom-surface coated and is bonded again.
This compound membrane making technology is complicated, needs multiple processes, and diffusion barrier has point of substrate layer and diffusion layer, base
The thickness of material layer is thicker, causes the thickness of composite membrane entirety partially thick.Meanwhile diffusion barrier need to be coated on substrate in the preparation it is molten
Dosage form spreads glue, and solvent volatilization can bring a large amount of pollutions.
Utility model content
The purpose of this utility model is to provide a kind of composite membranes to replace original diffusion barrier with diffusing protection film, does not need again
It there are the substrate layer and functional layer of diffusion barrier, protective film is whole can a diffusion function, and amplitude peak reduces material
It uses, also reduces the complexity of making technology.
To achieve the goals above, the utility model provides a kind of composite membrane, including brightness enhancement film and extrusion type protective film,
Brightness enhancement film includes substrate and the prism layer positioned at substrate side, and extrusion type protective film is located at side of the prism layer far from substrate, is squeezed
Contain diffusion particle in type protective film out.
Further, extrusion type protective film is single layer structure, and the diffusion particle is evenly distributed on the extrusion type protection
In film.
Further, extrusion type protective film includes at least two layers, is uniformly divided in at least one layer of the extrusion type protective film
It is furnished with diffusion particle.
Further, the material of extrusion type protective film is PP, PE, PET, PC or COP, preferably PET, PP or PE.
Further, extrusion type protective film is self-adhesive layer close to one layer of prism layer, the extrusion type protective film pass through from
Adhesion coating is bonded with the prism layer.
Further, composite membrane further includes laminating layer, and the extrusion type protective film is pasted by laminating layer and the prism layer
It closes.
Further, extrusion type protective film with a thickness of 25~100 μm.
Further, extrusion type protective film has embossed surface far from the one side of prism layer.
Compared with prior art, the utility model has the following beneficial effects:
The preparation process of the utility model composite membrane is simple, replaces original diffusion barrier with diffusing protection film, there is no diffusions
The substrate layer of film and point of diffusion layer, the use for reducing material of amplitude peak reduces the complexity of making technology, and
So that the integral thickness of composite membrane is thinned.
Detailed description of the invention
The Figure of description for constituting a part of the utility model is used to provide a further understanding of the present invention, this
The illustrative embodiments and their description of utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.
Fig. 1 is the 1 structure of composite membrane figure of the utility model embodiment；
Fig. 2 is the 2 structure of composite membrane figures of the utility model embodiment；
Fig. 3 is the 3 structure of composite membrane figures of the utility model embodiment；
Fig. 4 is the 4 structure of composite membrane figures of the utility model embodiment；
Fig. 5 is the 5 structure of composite membrane figures of the utility model embodiment.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, the utility model will be implemented below
Technical solution in example is clearly and completely described, it is clear that described embodiment is only the utility model a part
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
The range of the utility model protection all should belong in every other embodiment obtained under the premise of creative work out.
It should be noted that term " first ", " second " in the specification and claims of the utility model,
"upper", "lower" etc. are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that this
The data that sample uses are interchangeable under appropriate circumstances, so as to the embodiments of the present invention described herein.In addition, term
" comprising " and " having " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps
Rapid or unit process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but can
Including other step or units being not clearly listed or intrinsic for these process, methods, product or equipment.
As described in background technique, compound membrane making technology in the prior art is complicated, needs multiple processes, and
Diffusion barrier has point of substrate layer and diffusion layer, and the thickness of substrate layer is thicker, causes the thickness of composite membrane entirety partially thick.Meanwhile
Diffusion barrier needs the coating solvent type on substrate to spread glue in the preparation, and solvent volatilization can bring a large amount of pollutions.It is asked for above-mentioned
Topic, the utility model provide a kind of composite membrane, including brightness enhancement film and extrusion type protective film, and brightness enhancement film includes substrate and is located at base
The prism layer of material side, extrusion type protective film are located at side of the prism layer far from substrate, contain diffusion grain in extrusion type protective film
Son.The structure that diffusion particle is added in extrusion type protective film makes protective film play ontology atomization, has scattering and shielding function
Effect, original diffusion barrier is replaced using the diffusing protection film, there is no points of the substrate layer of diffusion barrier and diffusion function layer, protect
Cuticula integrally can have diffusion function, and the use for reducing material of amplitude peak also reduces the complexity of making technology.
The extrusion type protective film of the utility model can be single layer structure, and diffusion particle is evenly distributed on extrusion type protective film
In；It is also possible at least two layers, such as can is two layers or three-decker, is evenly distributed with diffusion particle at least one layer.
The material of above-mentioned extrusion type protective film can choose common plastics in the art, such as can be PP (poly- third
Alkene), PE (polyethylene), PET (polyethylene terephthalate), PC (polycarbonate) or COP (cyclic olefin polymer), preferably
For PET, PP or PE.
Above-mentioned diffusion particle can be able to be inorganic particulate, example selected from the common particle for playing diffusion effect in the art
Such as silica, aluminium oxide, zinc oxide, calcium carbonate, barium sulfate, preferably silica；It may be organic filler, such as
Acrylic particles, organic silicon particle, polyurethane particles, polystyrene particle etc., preferably acrylic particles, organic silicon particle
It is one or more.Can be according to actual dispersion mist degree demand, the diffusion particle selected from different content and different-grain diameter, it is preferable that
The mass ratio that diffusion particle accounts for protective film is 2~40%, and the partial size of diffusion particle is 2~20 μm.
In a kind of preferred embodiment of the utility model, the extrusion type protective film in above-mentioned composite membrane includes at least two
Layer structure, is evenly distributed with diffusion particle in wherein at least one layer, close to one layer of prism layer to have sticking self-adhesive layer, squeezes
Type protective film can be directly bonded by the self-adhesive layer of itself with brightness enhancement film out.The composite membrane of the utility model is compared with prior art
In composite membrane, it is no longer necessary to the substrate layer of diffusion barrier directly makes protective film have diffusion, and diffusing protection film and blast
Film compound tense no longer needs laminating layer to be pasted, so that the use of material be greatly reduced, reduces the complexity of manufacturing process
Degree and make product be thinned.
In the utility model another preferred embodiment, protective film itself in above-mentioned composite membrane without viscosity,
It can be single layer structure or at least double-layer structure, diffusion particle is at least distributed in wherein one layer, and above-mentioned composite membrane further includes
Laminating layer, extrusion type protective film are bonded by laminating layer with prism layer, composite membrane compared to the prior art, it is no longer necessary to spread
The substrate layer of film, directly makes protective film have diffusion, to reduce the use of material, product is thinned.
The protective film of the utility model with a thickness of 25~100 μm, diffusion barrier compared to the prior art needs substrate layer
And diffusion layer, thickness are thinned.
In order to further increase the mist degree and shielding of composite membrane, the extrusion type protective film of the utility model is far from prism layer
One side have embossed surface, this embossing can by pressure roller be made, make its surface have roughness.
Below with reference to embodiment and comparative example, the beneficial effects of the utility model are further illustrated.Obviously, described
Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of composite membrane, including brightness enhancement film 1 and extrusion type protective film 2, blast
Film includes substrate and the prism layer positioned at substrate side, and side of the prism layer far from substrate is arranged in extrusion type protective film 2, is squeezed out
It include diffusion particle in type protective film.Extrusion type protective film is two layers of coextruded structure layer 11,12 in the present embodiment, wherein protective film
One layer 11 close to prism layer is to have sticking self-adhesive layer, evenly dispersed in 12 layers to have diffusion particle.Extrusion type protective film is logical
Self-adhesive layer is crossed to be bonded with brightness enhancement film.The material of extrusion type protective film is PP (polypropylene), PE (polyethylene), PET (poly- terephthaldehyde
Sour glycol ester), PC (polycarbonate) or COP (cyclic olefin polymer), preferably PET, PP or PE, the thickness of extrusion type protective film
Degree is 25~100 μm.Preferably, surface of the extrusion type protective film 2 far from prism layer can also have embossed channels, improve protection
The harsh feeling of film.
Embodiment 2
As shown in Fig. 2, the utility model provides a kind of composite membrane, the difference from embodiment 1 is that, extrusion type protective film
2 be two layers of coextruded structure 21,22, and diffusion particle is evenly distributed in two layers of coextruded structure, and 21 layers are the sticking self-adhesion of tool
Layer, extrusion type protective film are bonded by self-adhesive layer 21 with brightness enhancement film 1.
Embodiment 3
As shown in figure 3, the utility model provides a kind of composite membrane, the difference from embodiment 1 is that, extrusion type protective film
2 be three-layer co-extruded 31,32,33 protective film of structure, wherein 31 be the sticking self-adhesive layer of tool, is evenly distributed with diffusion grain in 32
Son, extrusion type protective film are bonded by self-adhesive layer 31 with brightness enhancement film 1.
Embodiment 4
As shown in figure 4, the utility model provides a kind of composite membrane, the difference from embodiment 1 is that, extrusion type protective film
Structure is squeezed out for single layer, 2 surface of extrusion type protective film does not have viscosity, by being coated with one layer of fitting on extrusion type protective film 2
Layer 3 is bonded with brightness enhancement film 1.
Embodiment 5
As shown in figure 5, the utility model provides a kind of composite membrane, the difference with embodiment 4 is, extrusion type protective film
For two layers of 51,52 coextruded structures, coextruded layer 51 does not have viscosity, is evenly distributed with diffusion particle in 52, by protecting in extrusion type
One layer of laminating layer 3 is coated on cuticula 2 to be bonded with brightness enhancement film 1.
It should be noted that specific embodiment is only the explanation to technical solutions of the utility model, should not incite somebody to action
It is interpreted as the restriction to technical solutions of the utility model, any to use the utility model in essence utility model content and only work office
What portion changed, it should fall into the protection scope of the utility model.
Claims (9)
1. a kind of composite membrane, which is characterized in that including brightness enhancement film and extrusion type protective film, the brightness enhancement film includes substrate and is located at
The prism layer of the substrate side, the extrusion type protective film is located at side of the prism layer far from the substrate, described to squeeze
Contain diffusion particle in type protective film out.
2. composite membrane according to claim 1, which is characterized in that the extrusion type protective film is single layer structure, the expansion
Shot is evenly distributed in the extrusion type protective film.
3. composite membrane according to claim 1, which is characterized in that the extrusion type protective film includes at least two layers, described
Diffusion particle is evenly distributed in at least one layer of extrusion type protective film.
4. composite membrane according to claim 1, which is characterized in that the material of the extrusion type protective film be PP, PE, PET,
PC or COP.
5. composite membrane according to claim 4, which is characterized in that the material of the extrusion type protective film be PET, PP or
PE。
6. composite membrane according to claim 3, which is characterized in that the extrusion type protective film is close to the one of the prism layer
Layer is self-adhesive layer, and the extrusion type protective film is bonded by self-adhesive layer with the prism layer.
7. described in any item composite membranes according to claim 1~3, which is characterized in that the composite membrane further includes laminating layer, institute
Extrusion type protective film is stated to be bonded by laminating layer with the prism layer.
8. composite membrane according to claim 1, which is characterized in that the extrusion type protective film with a thickness of 25~100 μm.
9. composite membrane according to claim 1, which is characterized in that a mask of the extrusion type protective film far from prism layer
There is embossed surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821515055.6U CN209264992U (en) | 2018-09-17 | 2018-09-17 | A kind of composite membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821515055.6U CN209264992U (en) | 2018-09-17 | 2018-09-17 | A kind of composite membrane |
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| Publication Number | Publication Date |
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| CN209264992U true CN209264992U (en) | 2019-08-16 |
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| CN201821515055.6U Active CN209264992U (en) | 2018-09-17 | 2018-09-17 | A kind of composite membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589414A (en) * | 2021-08-05 | 2021-11-02 | 京东方科技集团股份有限公司 | Optical film, preparation method thereof, backlight module and display device |
-
2018
- 2018-09-17 CN CN201821515055.6U patent/CN209264992U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589414A (en) * | 2021-08-05 | 2021-11-02 | 京东方科技集团股份有限公司 | Optical film, preparation method thereof, backlight module and display device |
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