CN210835302U - Quantum dot diaphragm - Google Patents
Quantum dot diaphragm Download PDFInfo
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- CN210835302U CN210835302U CN201921659024.2U CN201921659024U CN210835302U CN 210835302 U CN210835302 U CN 210835302U CN 201921659024 U CN201921659024 U CN 201921659024U CN 210835302 U CN210835302 U CN 210835302U
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Abstract
The utility model provides a quantum dot diaphragm, including protective layer and intermediate level, the protective layer includes two-layer at least, the intermediate level set up in the middle of the protective layer, the intermediate level is the even layer of mixing of organic polymer plastic material and quantum dot, protective layer and intermediate level integrated into one piece. The utility model discloses a quantum dot diaphragm integrated into one piece is a whole layer film, and thickness is thin, practices thrift the backlight unit space during the use, and its production and processing process is simple.
Description
Technical Field
The utility model belongs to quantum dot diaphragm field especially relates to a quantum dot diaphragm.
Background
Quantum dots are composed of a finite number of atoms, all three dimensions being on the order of nanometers. The quantum dots are generally spherical or quasi-spherical nanoparticles with stable diameters of 2-20nm, are aggregates of atoms and molecules on a nanometer scale, and can be composed of one semiconductor material, such as IIB.VIA group elements or IIIA.VA group elements, or two or more semiconductor materials. Because the quantum dots cannot be exposed in the air, the quantum film conventionally used in the backlight technology is generally formed by uniformly mixing a certain proportion of quantum dots with a specific glue, and simultaneously coating and laminating an upper layer and a lower layer by a barrier film. The existing quantum dot diaphragm is basically compounded by multiple layers, is thicker, occupies too much module space when in use, and has complex production and processing technology.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a quantum dot diaphragm, this quantum dot diaphragm integrated into one piece is a whole layer film, and thickness is thin, practices thrift the backlight unit space during the use, and its production and processing process is simple.
In order to solve the technical problem, the utility model discloses a technical scheme is: the quantum dot diaphragm comprises at least two protective layers and an intermediate layer, wherein the intermediate layer is arranged in the middle of the protective layers and is a uniform mixing layer of an organic polymer plastic material and quantum dots, and the protective layers and the intermediate layer are integrally formed.
Furthermore, the protective layer is a polymer plastic material layer.
Further, the thickness of the protective layer is 10-20 μm, and the thickness of the intermediate layer is 20-60 μm.
In the technical scheme, the middle layer is a uniform mixing layer of quantum dots and an organic polymer plastic material, and the quantum dots in the middle layer are uniformly distributed, so that light penetrating through the layer can be uniformly dispersed; the protective layer can protect the quantum dots in the middle layer from being influenced by water and air, and the stability of the quantum dot film layer is improved; and the base material forms an integrated structure by adopting an in-mold co-extrusion mode, so that the thickness of the whole base material can be greatly reduced, the thickness of the base material is kept between 40 and 100 mu m, and the base material does not occupy too much space of the backlight module when in use.
Further, the organic polymer plastic material is PMMA, PS, PC, MS, PET, PP or a polymer associated therewith.
Further, the protective layer is provided with two layers, namely a surface protective layer and a bottom surface protective layer, wherein the surface protective layer and the bottom surface protective layer are respectively located on two sides of the middle layer and are integrally formed with the middle layer.
Furthermore, the outer side of the protective layer is also provided with a functional protective layer which is a uniform mixed layer of organic polymer plastic materials and diffusion particles or similar functional substances, and the functional protective layer, the protective layer and the interlayer are integrally formed.
Further, the thickness of the functional protective layer is 10-20 μm.
In the technical scheme, the functional protection layer is additionally arranged on the basis of the quantum dot film, so that the functionality of the quantum dot film is further improved, after the functional protection layer is added, the thickness of the quantum dot film layer is 140 mu m, the quantum dot film layer does not occupy too much space of a backlight module when in use, and functional particles are added, so that the quantum dot film has better performance.
Further, the diffusion particles or similar functional substances are organic silicon microspheres, PMMA microspheres, PS microspheres and nano SiO2Or TiO2One or more of them.
Specifically, as a specific embodiment of the present invention, the quantum dot film has a three-layer structure, and the three-layer structure is combined into a whole, and each layer from inside to outside is a protective layer/intermediate layer/protective layer, specifically a surface protective layer/intermediate layer/bottom surface protective layer, wherein the intermediate layer is a uniform mixed layer of 90% to 99.9% of an organic polymer plastic material and 0.1% to 10% of quantum dots, the protective layer is an organic polymer plastic material, and the surface protective layer: an intermediate layer: the thickness ratio of the bottom surface protective layer is 5-10: 20-30:5-10.
As another specific embodiment of the present invention, the quantum dot film has a five-layer structure, the five-layer structure is combined into a whole, and each layer from inside to outside is a functional protective layer/intermediate layer/protective layer, wherein the intermediate layer is a uniform mixed layer of 90% to 99.9% of an organic polymer plastic material and 0.1% to 10% of quantum dots, the protective layer is an organic polymer plastic material layer, the functional protective layer is a uniform mixed layer of an organic polymer plastic material and diffusion particles or similar functional substances, and the thickness ratio of the functional mixed layer/surface protective layer/intermediate layer/bottom surface protective layer/functional mixed layer is 5-10: -20-30:5-10:5-10.
The utility model discloses in, integrated into one piece can adopt the mode of crowded altogether in the mould to form the integrated into one piece structure.
The utility model has the advantages and positive effects that:
1. the quantum dot diaphragm of the utility model is integrally formed (only comprises one diaphragm), has thin thickness, can be within 100 mu m, can save the space of a backlight module when in use, and can be used for a small-size display;
2. the quantum dot diaphragm of the utility model only has one layer of film, the raw materials are extruded and cooled to form by one-time extrusion by adopting a coextrusion process, the processing process is simple, multilayer compounding is not needed, and the production time and the production cost are saved;
3. the quantum dot diaphragm of the utility model can be used as a basic layer, and other functional protective layers are added on the outer side of the quantum dot diaphragm, so that quantum dot diaphragms with different functional properties can be obtained, and the whole thickness of the added functional protective layer is not more than 150 μm.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a quantum dot membrane of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the quantum dot film of the present invention;
in the figure: 1-intermediate layer, 2-protective layer, 201-surface protective layer, 202-bottom surface protective layer, 203-functional protective layer.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 and 2, a quantum dot membrane comprises a protective layer 2 and an intermediate layer 1, wherein the protective layer 2 at least comprises two layers, the intermediate layer 1 is arranged between the protective layer 2, the intermediate layer 1 is a uniform mixed layer of an organic polymer plastic material and quantum dots, and the protective layer 2 and the intermediate layer 1 are integrally formed in an in-mold co-extrusion manner.
Further, the protection layer 2 is a polymer plastic material layer.
Further, the thickness of the protective layer 2 is 10-20 μm, and the thickness of the intermediate layer 1 is 20-60 μm.
Further, the organic polymer plastic material is PMMA, PS, PC, MS, PET, PP or a polymer associated therewith.
The first embodiment is as follows:
as shown in fig. 1, in the present embodiment, further, the protection layer 2 is provided with two layers, namely a surface protection layer 201 and a bottom protection layer 202, and the surface protection layer 201 and the bottom protection layer 202 are respectively located on two sides of the middle layer 1 and are integrally formed with the middle layer 1.
In the quantum dot membrane of the embodiment, the surface protection layer 201 and the bottom protection layer 202 on both sides can protect the quantum dots in the middle layer 1 from being oxidized.
Example two:
as shown in fig. 2, in the present embodiment, a functional protection layer 203 is further disposed on the outer side of the protection layer 2, the functional protection layer 203 is a uniform mixed layer of an organic polymer plastic material and diffusion particles or similar functional substances, and the functional protection layer 203 is integrally formed with the protection layer 2 and the intermediate layer 1.
In this embodiment, further, the thickness of the functional protection layer 203 is 10 to 20 μm.
In this embodiment, the diffusing particles or similar functional materials are silicone microspheres or PMMA microbeadsPS microspheres and nano SiO2Or TiO2One or more of them.
In the quantum dot film of the embodiment, the outer side of the protective layer 2 is further provided with a functional protective layer, so that the quantum dot film has certain functionality.
The utility model discloses the preparation flow:
1. the preparation procedure of example one:
(1) material mixing treatment: mixing the concentrated solution of the quantum dots and the master batch of the organic polymer plastic material to obtain a mixture, wherein the quantum dots in the mixture account for 0.1-10% of the total weight;
(2) melting treatment of the mixed materials: heating and melting the uniformly mixed mixture in the step (1) to obtain a first melt, and taking the first melt as a middle layer molten material;
(3) melting the organic polymer plastic material: heating and melting the master batch of the organic polymer plastic material to obtain a second melt, and taking the second melt as a molten material of the two protective layers;
(4) and (3) preparing a film by coextrusion: the film is formed by co-extrusion in a die, the film is of a three-layer structure, the molten materials corresponding to each layer are respectively put into one extruder, the three extruders work simultaneously, the molten materials in the molten state in the three extruders are compounded in the die and then extruded into a whole through a die orifice, and the quantum dot film is obtained after cooling and shaping.
2. Example ii preparation procedure:
(1) material mixing treatment: mixing the concentrated solution of the quantum dots and the master batch of the organic polymer plastic material to obtain a mixture, wherein the quantum dots in the mixture account for 0.1-10% of the total weight;
(2) melting treatment of the mixed materials: heating and melting the uniformly mixed mixture in the step (1) to obtain a first melt, and taking the first melt as a middle layer molten material;
(3) ① heating and melting the master batch of the organic polymer plastic material to obtain a second melt which is used as a melt material of the two protective layers, ② weighing a certain amount of the master batch of the organic polymer plastic material and a certain amount of diffusion particles or similar functional substances (such as PMMA microbeads) and uniformly mixing, and heating and melting to obtain a third melt which is used as a melt material of the functional protective layer, wherein the diffusion particles or similar functional substances and the master batch of the organic polymer plastic material are mixed according to the mass ratio of 1: 9;
(4) and (3) preparing a film by coextrusion: the film is formed by co-extrusion in a die, the film is of a five-layer structure, the corresponding molten materials of each layer are respectively put into one extruder, the five extruders work simultaneously, the molten materials in the molten state in the five extruders are compounded in the die and then extruded into a whole through a die orifice, and the quantum dot film is obtained after cooling and shaping.
According to the preparation process, the composite material can be prepared by heating and melting the respective raw materials and then extruding the raw materials through the same die orifice by a co-extruder, is simple to process, does not need repeated processing, does not need to compound multiple layers, can save production time and cost, and is simple in production and processing process and easy to operate.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. A quantum dot film, comprising: the organic light-emitting diode is characterized by comprising a protective layer (2) and an intermediate layer (1), wherein the protective layer (2) at least comprises two layers, the intermediate layer (1) is arranged in the middle of the protective layer (2), the intermediate layer (1) is an even mixing layer of an organic polymer plastic material and quantum dots, and the protective layer (2) and the intermediate layer (1) are integrally formed.
2. A quantum dot film according to claim 1, wherein: the protective layer (2) is a polymer plastic material layer.
3. A quantum dot film according to claim 1, wherein: the thickness of the protective layer (2) is 10-20 μm, and the thickness of the intermediate layer (1) is 20-60 μm.
4. A quantum dot film according to claim 1, wherein: the organic polymer plastic material is PMMA, PS, PC, MS, PET, PP or a polymer related to the PMMA, the PS, the PC, the MS, the PET and the PP.
5. A quantum dot film according to claim 3, wherein: the protective layer (2) is provided with two layers, namely a surface protective layer (201) and a bottom surface protective layer (202), wherein the surface protective layer (201) and the bottom surface protective layer (202) are respectively located on two sides of the middle layer (1) and are integrally formed with the middle layer (1).
6. A quantum dot membrane according to claim 3 or 5, wherein: the outer side of the protective layer (2) is also provided with a functional protective layer (203), and the functional protective layer (203) is a uniform mixing layer of an organic polymer plastic material and diffusion particles or similar functional substances; the functional protective layer (203) is integrally formed with the protective layer (2) and the intermediate layer (1).
7. The quantum dot membrane of claim 6, wherein: the thickness of the functional protection layer (203) is 10-20 μm.
8. The quantum dot membrane of claim 6, wherein: the diffusion particles or similar functional substances are organic silicon microspheres, PMMA microspheres, PS microspheres and nano SiO2Or TiO2One or more of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921659024.2U CN210835302U (en) | 2019-09-30 | 2019-09-30 | Quantum dot diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921659024.2U CN210835302U (en) | 2019-09-30 | 2019-09-30 | Quantum dot diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210835302U true CN210835302U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921659024.2U Active CN210835302U (en) | 2019-09-30 | 2019-09-30 | Quantum dot diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210835302U (en) |
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2019
- 2019-09-30 CN CN201921659024.2U patent/CN210835302U/en active Active
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