CN219349177U - Polarizing film - Google Patents
Polarizing film Download PDFInfo
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- CN219349177U CN219349177U CN202320646203.2U CN202320646203U CN219349177U CN 219349177 U CN219349177 U CN 219349177U CN 202320646203 U CN202320646203 U CN 202320646203U CN 219349177 U CN219349177 U CN 219349177U
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Abstract
The utility model discloses a polarizing film, which comprises a first polarizing film and a second polarizing film which are laminated, wherein the first polarizing film comprises a first substrate layer and a first coating layer laminated on the first substrate layer, and the second polarizing film comprises a second substrate layer and a second coating layer laminated on the second substrate layer, so that the first coating layer, the first substrate layer, the second coating layer and the second substrate layer are laminated in sequence; the first coating is a first nanofiber structure film with polarization characteristics, and the second coating is a second nanofiber structure film with polarization characteristics, so that polarized light in different directions is absorbed and reflected by the first and second polarized films. The first polarizing film and the second polarizing film can absorb polarized light in different directions, and reflect the absorbed polarized light back to the backlight source for recycling, so that electric energy is saved; the double-layer film structure can increase the density of the nanofibers and further increase the density of the polarizing film, thereby improving the light absorption and reflection efficiency of the polarizing film.
Description
Technical Field
The utility model relates to the field of polarizing films, in particular to a polarizing film.
Background
The polarizing film is also called a polaroid, and the polaroid mainly has the function of changing natural light passing through the polaroid into polarized light, and enabling light rays in a direction perpendicular to an electric field to pass through, so that an LCD panel can normally display images, and therefore, the polaroid is a key component affecting the display effect of an LCD screen.
In general, when natural light passes through a polarizing film, the transmitted light is polarized light having a vibration direction parallel to a transmission axis of the polarizing film, and light having a vibration direction perpendicular to the transmission axis of the polarizing film is absorbed, so that the light energy absorbed by the polarizing film is wasted.
Disclosure of Invention
Accordingly, it is necessary to provide a polarizing film that can absorb polarized light and reflect the absorbed polarized light back to the backlight for recycling.
In order to solve the above-described problems, the present utility model provides a polarizing film including a first polarizing film and a second polarizing film which are laminated, the first polarizing film including a first substrate layer and a first coating layer laminated on the first substrate layer, the second polarizing film including a second substrate layer and a second coating layer laminated on the second substrate layer, such that the first coating layer, the first substrate layer, the second coating layer, and the second substrate layer are laminated in this order;
the first coating is a first nanofiber structure film with polarization characteristics, and the second coating is a second nanofiber structure film with polarization characteristics, so that the first and second polarized films absorb and reflect polarized light in different directions.
In one embodiment, the thickness of the first substrate layer is the same as the thickness of the second substrate layer, and the thickness of the first coating layer is the same as the thickness of the second coating layer, such that the absorptivity and reflectivity of the first polarizing film and the second polarizing film are the same.
In one embodiment, the first substrate layer and the first coating layer have the same thickness such that the first substrate layer, the second substrate layer, the first coating layer, and the second coating layer are all the same thickness, which are sequentially stacked.
In one embodiment, the polarizing film further comprises a third polarizing film, the third polarizing film comprises a third substrate layer and a third coating layer, the second coating layer is a third nanofiber structure film with polarization characteristics, so that the third polarizing film absorbs and reflects polarized light in different directions, and the first polarizing film, the second polarizing film and the third polarizing film are sequentially laminated to form a three-layer film material structure.
In one embodiment, the first substrate layer and the second substrate layer are both flexible substrate layers.
In one embodiment, the first substrate layer is a polyvinyl chloride layer, an ethylene vinyl acetate copolymer layer, or an ethylene terephthalate layer.
In one embodiment, the second substrate layer is a polyvinyl chloride layer, an ethylene vinyl acetate copolymer layer, or an ethylene terephthalate layer.
In one embodiment, the first coating comprises metal nanowires, such that the first coating is a metal nanowire coating.
In one embodiment, the second coating comprises metal nanowires, such that the second coating is a metal nanowire coating.
In one embodiment, the metal nanowires are Ag nanowires or Cu nanowires.
By implementing the embodiment of the utility model, the first coating is a first nanofiber structure film, the second coating is a second nanofiber structure film and both have polarization characteristics, so that the first polarization film and the second polarization film can both absorb polarized light in different directions, and the absorbed polarized light is reflected back to the backlight source for recycling, thereby saving electric energy;
the polarizing film is laminated through the first polarizing film and the second polarizing film, so that a double-layer film structure is formed, the double-layer film structure is equivalent to laminating two layers of nanofiber structure films, the density of nanofibers can be increased, the density of the polarizing film can be increased, and the light absorption efficiency and the light reflection efficiency of the polarizing film can be improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
fig. 1 is a schematic structural diagram of a polarizing film according to an embodiment.
Fig. 2 is a schematic view of a first polarizing film among the polarizing films shown in fig. 1.
Reference numerals:
10-a first polarizing film, 12-a first coating layer, 14-a first substrate layer;
20-a second polarizing film, 22-a second coating layer, 24-a second substrate layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the members in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Referring to fig. 1 to 2, the present utility model discloses a polarizing film according to an embodiment, which includes a first polarizing film 10 and a second polarizing film 20 stacked, wherein the first polarizing film 10 includes a first substrate layer 14 and a first coating layer 12 stacked on the first substrate layer 14, and the second polarizing film 20 includes a second substrate layer 24 and a second coating layer 22 stacked on the second substrate layer 24, such that the first coating layer 12, the first substrate layer 14, the second coating layer 22, and the second substrate layer 24 are sequentially stacked;
the first coating 12 is a first nanofiber structure film having polarization characteristics, and the second coating 22 is a second nanofiber structure film having polarization characteristics, such that the first and second polarizing films 10 and 20 absorb and reflect polarized light in different directions.
Specifically, the first polarizing film 10 is stacked above the second polarizing film 20, wherein the first coating layer 12 is stacked above the first substrate layer 14, and the second coating layer 22 is stacked above the second substrate layer 24, and then the first coating layer 12, the first substrate layer 14, the second coating layer 22, and the second substrate layer 24 are stacked in this order from top to bottom.
Specifically, the first nanofiber structure film and the second fiber structure film have polarization characteristics, and therefore, the first coating 12 and the second coating 22 have polarization characteristics, and therefore, the first polarizing film 10 and the second polarizing film 20 can absorb polarized light, and reflect the absorbed polarized light back to the backlight source for recycling, so that the lamination of the first polarizing film 10 and the second polarizing film 20 can improve the efficiency of the polarizing film for absorbing polarized light and reflecting polarized light.
By implementing the embodiment of the utility model, the first coating 12 of the polarizing film is a first nanofiber structure film, the second coating 22 is a second nanofiber structure film and has polarization characteristics, so that the first polarizing film 10 and the second polarizing film 20 can absorb polarized light in different directions, and the absorbed polarized light is reflected back to the backlight source for recycling, thereby saving electric energy.
The polarizing film is laminated by the first polarizing film 10 and the second polarizing film 20, so that a double-layer film structure is formed, the double-layer film structure is equivalent to laminating two layers of nanofiber structure films, the density of nanofibers can be increased, the density of the polarizing film can be further increased, and the light absorption efficiency and the light reflection efficiency of the polarizing film can be improved.
Preferably, the first substrate layer 14 and the second substrate layer 24 are both flexible substrate layers.
The first polarizing film 10 and the second polarizing film 20 are pressed together at a high temperature to form a double-layer film structure.
After the first polarizing film 10 and the second polarizing film 20 are compounded, the film is softened at a high temperature and finally pressed to form a complete film structure through a pressing process.
Further, the polarizing film further includes a third polarizing film, the third polarizing film includes a third substrate layer and a third coating layer, the second coating layer 22 is a third nanofiber structure film having a polarizing property, so that the third polarizing film absorbs and reflects polarized light in different directions, and the first polarizing film 10, the second polarizing film 20 and the third polarizing film are sequentially laminated to form a three-layer film material structure.
Specifically, the polarizing film can be further provided as a three-layer film structure, the thickness of which is relatively large compared with that of a two-layer film structure, however, the three-layer film structure can increase the density of nanofibers, so that the efficiency of absorbing light and reflecting light of the polarizing film can be improved to a certain extent.
In other embodiments, the polarizing film may be a multi-layer film structure, and the multi-layer film structure formed by high-temperature lamination of the multi-layer polarizing film has good polarizing characteristics.
In one embodiment, the thickness of the first substrate layer 14 is the same as the thickness of the second substrate layer 24, and the thickness of the first coating layer 12 is the same as the thickness of the second coating layer 22, such that the absorptivity and reflectivity of the first polarizing film 10 and the second polarizing film 20 are the same.
Specifically, setting the thickness of the first coating layer 12 to be the same as that of the second coating layer 22 enables the manufactured first polarizing film 10 and second polarizing film 20 to absorb the absorption rate of polarized light, and to reflect the absorbed polarized light back to the backlight for recycling. The same absorption and reflection rates of the first polarizing film 10 and the second polarizing film 20 can make the polarization characteristics of the produced polarizing film better.
Preferably, the first substrate layer 14 is the same thickness as the first coating layer 12 such that the first substrate layer 14, the second substrate layer 24, the first coating layer 12, and the second coating layer 22 are all the same thickness, which are stacked in that order.
Specifically, the thickness of each layer is the same, so that the prepared polarizing film is tidier, more standard, better in processing and better in laminating effect, and the polarizing film with better polarization characteristics, absorption rate and reflectivity is prepared.
In another embodiment, the thicknesses of the first substrate layer 14, the second substrate layer 24, the first coating 12, and the second coating 22 may also be different.
In this way, the absorption and reflection rates of the first polarizing film 10 and the second polarizing film 20 are different, and the thicknesses are different, so that the polarizing films are relatively irregular, and the processing is complicated, but the absorption and reflection effects of the manufactured polarizing films are approximately the same.
In detail, the first substrate layer 14 is a polyvinyl chloride layer, an ethylene-vinyl acetate copolymer layer, or a polyethylene terephthalate layer.
The second substrate layer 24 is a polyvinyl chloride layer, an ethylene-vinyl acetate copolymer layer, or a polyethylene terephthalate layer.
Specifically, the first substrate layer 14 and the second substrate layer 24 may be made of the same material or different materials.
The first coating 12 includes metal nanowires such that the first coating 12 is a metal nanowire coating.
The second coating 22 includes metal nanowires such that the second coating 22 is a metal nanowire coating.
While the first substrate layer 14 and the second substrate layer 24 function primarily to carry the metal nanowire coating.
Specifically, the metal nanowires are used to form a composite suspension, and the composite suspension is applied on the first substrate layer 14 to form a metal nanowire coating, and the portion of the metal nanowire coating, where the plurality of nanofibers are nearly parallel, is taken as a first nanofiber structure film with polarization characteristics, i.e. the first coating 12.
More specifically, the metal nanowires are made into a composite suspension, and in connection with fig. 2, the composite suspension is spin-coated on the first substrate layer 14 by spin-coating, and after the composite suspension is coated on the first substrate layer 14, a metal nanowire coating having a plurality of nanofibers is finally formed, and after the metal nanowire coating having a plurality of nanofibers is formed, the material is drawn, and the initial substrate layer is considered to be circular because the plurality of nanofibers in the edge portion area are nearly parallel, wherein the metal nanowire coating formed by the plurality of nanofibers in the edge portion area is a first nanofiber structure film, and thus, the first coating 12 is a first nanofiber structure film having polarization characteristics.
The obtained material of the circular edge part is the first polarizing film 10, and the first polarizing film 10 can achieve better light absorption and reflection effects.
The second polarizing film 20 may be obtained by taking materials from the same circular edge portion, or by using the same method or material taking method.
Further, the metal nanowire is an Ag nanowire or a Cu nanowire.
In general, the polarizing film with the multilayer film material structure is simple to prepare, the preparation cost is relatively low, the efficiency of absorbing light and reflecting light of the polarizing film is high, and electric energy can be saved.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A polarizing film comprising a first polarizing film and a second polarizing film which are laminated, the first polarizing film comprising a first base material layer and a first coating layer laminated on the first base material layer, the second polarizing film comprising a second base material layer and a second coating layer laminated on the second base material layer, such that the first coating layer, the first base material layer, the second coating layer, and the second base material layer are laminated in this order;
the first coating is a first nanofiber structure film with polarization characteristics, and the second coating is a second nanofiber structure film with polarization characteristics, so that the first and second polarized films absorb and reflect polarized light in different directions.
2. The polarizing film according to claim 1, wherein the thickness of the first substrate layer is the same as the thickness of the second substrate layer, and the thickness of the first coating layer is the same as the thickness of the second coating layer, so that the absorptivity and reflectivity of the first polarizing film and the second polarizing film are the same.
3. The polarizing film according to claim 2, wherein the first substrate layer and the first coating layer have the same thickness such that the first substrate layer, the second substrate layer, the first coating layer, and the second coating layer, which are sequentially stacked, have the same thickness.
4. The polarizing film according to claim 3, further comprising a third polarizing film comprising a third base material layer and a third coating layer, wherein the second coating layer is a third nanofiber structure film having polarization characteristics, such that the third polarizing film absorbs and reflects polarized light in different directions, and the first polarizing film, the second polarizing film, and the third polarizing film are laminated in this order to form a three-layer film structure.
5. A polarizing film according to claim 3, wherein the first substrate layer and the second substrate layer are each soft substrate layers.
6. The polarizing film according to claim 5, wherein the first substrate layer is a polyvinyl chloride layer, an ethylene-vinyl acetate copolymer layer, or a polyethylene terephthalate layer.
7. The polarizing film according to claim 5, wherein the second substrate layer is a polyvinyl chloride layer, an ethylene-vinyl acetate copolymer layer, or a polyethylene terephthalate layer.
8. A polarizing film according to claim 3, wherein the first coating comprises metal nanowires, such that the first coating is a metal nanowire coating.
9. A polarizing film according to claim 3, wherein the second coating comprises metal nanowires, such that the second coating is a metal nanowire coating.
10. The polarizing film according to any one of claims 8 to 9, wherein the metal nanowire is an Ag nanowire or a Cu nanowire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320646203.2U CN219349177U (en) | 2023-03-28 | 2023-03-28 | Polarizing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320646203.2U CN219349177U (en) | 2023-03-28 | 2023-03-28 | Polarizing film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219349177U true CN219349177U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320646203.2U Active CN219349177U (en) | 2023-03-28 | 2023-03-28 | Polarizing film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219349177U (en) |
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- 2023-03-28 CN CN202320646203.2U patent/CN219349177U/en active Active
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