CN220913371U - Multilayer coextrusion quantum dot diffusion plate and melt extrusion structure thereof - Google Patents
Multilayer coextrusion quantum dot diffusion plate and melt extrusion structure thereof Download PDFInfo
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- CN220913371U CN220913371U CN202322646772.XU CN202322646772U CN220913371U CN 220913371 U CN220913371 U CN 220913371U CN 202322646772 U CN202322646772 U CN 202322646772U CN 220913371 U CN220913371 U CN 220913371U
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 148
- 238000009792 diffusion process Methods 0.000 title claims abstract description 76
- 238000001125 extrusion Methods 0.000 title claims abstract description 40
- 239000010410 layer Substances 0.000 claims abstract description 188
- 230000004888 barrier function Effects 0.000 claims abstract description 51
- 239000002861 polymer material Substances 0.000 claims abstract description 35
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000000155 melt Substances 0.000 claims description 8
- -1 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 4
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 2
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000011241 protective layer Substances 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 239000002346 layers by function Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a multilayer co-extrusion quantum dot diffusion plate, which comprises a quantum dot layer, a first high polymer material barrier layer, a second high polymer material barrier layer and a diffusion layer; the first high polymer material barrier layer and the second high polymer material barrier layer are arranged on each side of the quantum dot layer oppositely; the diffusion layer can be a diffusion layer with quantum dots, a first diffusion layer and a second diffusion layer; the different functional layer structures are fixedly connected through an adhesive layer. The perovskite quantum dots are sealed in the protective layer by adopting an extrusion structure using multilayer coextrusion without the prior treatment, so that the isolation of the quantum dots from external conditions is realized in space, the quantum dots are widely protected, and a stable working state is achieved; meanwhile, due to the design of the double distributors, the processing and maintenance difficulties of the distributors are improved, the equipment cost is reduced, and the quantum dot technology popularization is promoted.
Description
Technical Field
The application relates to a multilayer co-extrusion quantum dot diffusion plate and an extrusion structure thereof, and belongs to the technical field of manufacturing of display equipment.
Background
The quantum dot is used as an emerging semiconductor material, and has the advantages of narrow luminous wave peak, adjustable wavelength and the like due to the existence of a size limiting effect, so that compared with the traditional fluorescent material, the quantum dot material has great advantages and is a more excellent luminous material. In recent years, quantum dot luminescent materials are applied to backlight light sources of liquid crystal display devices, so that the color gamut of the liquid crystal display devices can be remarkably improved, and colors can be restored more truly. However, the quantum dot is easily affected by external conditions, and needs more conditions and procedures for protection, so that the processing and manufacturing cost is high, and the quantum dot cannot be widely popularized -.
In the invention, a production scheme of a multilayer co-extrusion quantum dot diffusion plate is provided, and a plate with integrated quantum dots and diffusion functions can be produced. Meanwhile, the multi-layer co-extrusion die head adopts a double-distributor structure, so that the processing difficulty is reduced, the equipment cost is reduced, and meanwhile, the die is easier to maintain, and greater economic benefit is brought. The blocking can effectively isolate adverse factors such as oxygen moisture and the like on the quantum dots, so that the multi-layer composite quantum dot diffusion plate has better stability.
In the existing quantum dot extrusion or coating process, the quantum dots are required to be sealed by using a barrier material and then processed. Since perovskite is susceptible to external conditions, it is possible to cause damage and instability to the quantum dot material when it is enclosed.
Disclosure of utility model
According to one aspect of the application, a multilayer coextrusion quantum dot diffusion plate is provided, and a multilayer coextrusion extrusion structure is adopted to seal perovskite quantum dots in a protective layer without prior treatment, so that the quantum dots are isolated from external conditions in space, and the quantum dots are widely protected, thereby reaching a stable working state; meanwhile, due to the design of the double distributors, the processing and maintenance difficulties of the distributors are improved, the equipment cost is reduced, and the quantum dot technology popularization is promoted.
The application adopts the following technical scheme:
A multilayer co-extrusion quantum dot diffusion plate comprises a quantum dot layer, a first high polymer material barrier layer and a second high polymer material barrier layer;
The first high polymer material barrier layer and the second high polymer material barrier layer are oppositely arranged on each side of the quantum dot layer;
The quantum dot layer is fixedly connected with the first high polymer material barrier layer and the second high polymer material barrier layer through the adhesive layer;
The quantum dot layer is selected from one of a quantum dot layer and a quantum dot diffusion layer;
when the quantum dot layer is a single quantum dot layer, the multi-layer co-extrusion quantum dot diffusion plate further comprises a first diffusion layer and a second diffusion layer;
The first diffusion layer is arranged between the quantum dot layer and the first high polymer material barrier layer or is arranged on one side of the first high polymer material barrier layer away from the quantum dot layer;
The second diffusion layer is arranged between the quantum dot layer and the second high polymer material barrier layer or is arranged on one side of the second high polymer material barrier layer, which is away from the quantum dot layer.
The material selection of the quantum dot layer is derived from the prior art, wherein the quantum dot diffusion layer refers to the fact that quantum dots and diffusion particles are mixed in the same layer, and a person skilled in the art can select or prepare the quantum dot layer according to specific requirements.
Optionally, the quantum dot layer, the first polymer material barrier layer and the first diffusion layer are independently and fixedly connected with each other through an adhesive layer.
Optionally, the first polymer material barrier layer and the second polymer material barrier layer are independently selected from one of an ethylene-vinyl alcohol copolymer barrier layer, a polyvinylidene chloride barrier layer, a polyethylene terephthalate barrier layer, a poly m-xylylene adipamide barrier layer and a polyethylene naphthalate barrier layer.
Optionally, the quantum dot layer is a single quantum dot layer or a double quantum dot layer.
Optionally, the single quantum dot layer is a single quantum dot layer or a quantum dot diffusion layer;
The double-layer quantum dot layer is a double-layer quantum dot layer formed by superposing a first quantum dot layer and a second quantum dot layer, or a double-layer quantum dot layer formed by superposing a first quantum dot diffusion layer and a second quantum dot diffusion layer.
Optionally, when the quantum dot layer in the multilayer coextrusion quantum dot diffusion plate is a single quantum dot layer,
The layer structure of the multilayer coextrusion quantum dot diffusion plate is sequentially as follows from one side to the other side: the device comprises a first diffusion layer, a first high polymer material barrier layer, a single-layer quantum dot layer, a second high polymer material barrier layer and a second diffusion layer.
Optionally, the quantum dot layer in the multilayer co-extrusion quantum dot diffusion plate is a double-layer quantum dot layer:
The following steps are sequentially carried out from side to side: the quantum dot device comprises a first diffusion layer, a first high polymer material barrier layer, a double-layer quantum dot layer, a second high polymer material barrier layer and a second diffusion layer, wherein the quantum dot layer is a single-layer quantum dot layer or a quantum dot expansion layer.
According to another aspect of the application, a melt extrusion structure of the multi-layer co-extrusion quantum dot diffusion plate is provided, and the melt extrusion structure of the multi-layer co-extrusion quantum dot diffusion plate comprises a plurality of extruders, a first distributor and a second distributor.
Optionally, the first and second dispensers independently comprise 2 to 5 extruder feed interfaces.
Optionally, the total number of the extruders is 5-10;
the extruder functions mainly to extrude different materials, including 1 or 2 extruders for quantum dot layer extrusion, at least 2 extruders for adhesive layer extrusion, and 1 or 2 extruders for diffusion layer extrusion.
The extruder is in communication with 1 or 2 extruder feed interfaces.
The co-extrusion die head adopts a double-distributor structure consisting of the first distributor and the second distributor, so that the processing difficulty and the processing cost are effectively reduced.
The application has the beneficial effects that:
The multilayer coextrusion quantum dot diffusion plate provided by the application adopts a multilayer coextrusion scheme, and introduces a barrier layer to realize the diffusion plate with quantum dots, wherein the quantum dots are protected in a stable environment. The melt extrusion structure of the multilayer co-extrusion quantum dot diffusion plate adopts a double-distributor structural design of the co-extrusion die head, so that the processing difficulty and cost are effectively reduced, the die is easier to maintain, greater economic benefit is brought, and the effect of controllable precision can be obtained by matching the double-distributor structural design of the multi-group extruder.
Drawings
FIG. 1 is a schematic view of a two-distributor structure of the melt extrusion structure in example 1 of the present application.
Fig. 2 is a schematic diagram of a single quantum dot structure scheme in embodiment 1 of the present application.
Fig. 3 is a schematic diagram of a structure scheme of a double quantum dot in embodiment 1 of the present application.
Drawing reference numerals
1. A dispenser; 2. a co-extrusion die head; 3. an extruder interface.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Unless otherwise indicated, all starting materials in the examples of the present application were purchased commercially.
According to one embodiment of the application, a melt extrusion structure of the multi-layer co-extrusion quantum dot diffusion plate is shown in fig. 1, and comprises a distributor (1), specifically a first distributor and a second distributor, which are connected with a plurality of extruders through extruder interfaces and are used for allowing molten raw materials such as a diffusion layer, an adhesive layer, a quantum dot layer, a barrier layer and the like to pass through, and extruding through a co-extrusion die head to form the multi-layer co-extrusion quantum dot diffusion plate.
Example 1 Single Quantum dot layer Structure scheme
In this embodiment, the multi-layer co-extrusion quantum dot diffusion plate is obtained by extruding the structure of the extruder, the distributor 1 and the distributor 2, the structure of the multi-layer co-extrusion quantum dot diffusion plate layer is shown in fig. 1, and the specific structure of the multi-layer co-extrusion quantum dot diffusion plate, the matched structure scheme of the raw material extruder and the distributor are shown in table 1:
TABLE 1 multilayer Co-extruded Quantum dot diffusion plate is a Single Quantum dot layer Structure
The single quantum dot layer structure scheme comprises ① extruders; ② 7 extruders; ③ 9 extruders. According to different output and combination requirements, different extruder schemes and double-distributor schemes are adopted, different extruder numbers can correspond to different equipment models and costs, and overall, 5 extruder schemes can enable equipment and maintenance costs to be reduced to the minimum, and 9 extruder schemes are schemes with highest precision.
Example 2 double Quantum dot layer Structure scheme
In this embodiment, the multi-layer co-extrusion quantum dot diffusion plate is obtained by extruding the structure of the extruder, the distributor 1 and the distributor 2, the structure of the multi-layer co-extrusion quantum dot diffusion plate layer is shown in fig. 2, and the specific structure of the multi-layer co-extrusion quantum dot diffusion plate, the matched structure scheme of the raw material extruder and the distributor are shown in table 2:
TABLE 2 multilayer Co-extruded Quantum dot diffusion plate is a Single Quantum dot layer Structure
The double quantum dot layer structure scheme comprises ① extruders; ② 8 extruders; ③ 10 extruders. Different extruder schemes and twin distributor schemes are employed depending on the different throughput and combination requirements. Different extruder numbers will correspond to different equipment models and costs, and overall a 6 extruder solution will minimize equipment and maintenance costs, with a 10 extruder solution being the most accurate one.
While the application has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the application, and it is intended that the application is not limited to the specific embodiments disclosed.
Claims (10)
1. The multilayer coextrusion quantum dot diffusion plate is characterized by comprising a quantum dot layer, a first high polymer material barrier layer and a second high polymer material barrier layer;
The first high polymer material barrier layer and the second high polymer material barrier layer are oppositely arranged on each side of the quantum dot layer;
The quantum dot layer is fixedly connected with the first high polymer material barrier layer and the second high polymer material barrier layer through the adhesive layer;
The quantum dot layer is selected from one of a quantum dot layer and a quantum dot diffusion layer;
when the quantum dot layer is a single quantum dot layer, the multi-layer co-extrusion quantum dot diffusion plate further comprises a first diffusion layer and a second diffusion layer;
The first diffusion layer is arranged between the quantum dot layer and the first high polymer material barrier layer or is arranged on one side of the first high polymer material barrier layer away from the quantum dot layer;
The second diffusion layer is arranged between the quantum dot layer and the second high polymer material barrier layer or is arranged on one side of the second high polymer material barrier layer, which is away from the quantum dot layer.
2. The multilayer coextruded quantum dot diffusion plate of claim 1, wherein the quantum dot layer, the first polymeric barrier layer, the first diffusion layer are fixedly connected to each other, or the quantum dot layer, the second polymeric barrier layer, the second diffusion layer are independently connected to each other by an adhesive layer.
3. The multilayer coextruded quantum dot diffusion plate of claim 1, wherein the first and second polymeric barrier layers are independently selected from one of an ethylene-vinyl alcohol copolymer barrier layer, a polyvinylidene chloride barrier layer, a polyethylene terephthalate barrier layer, a poly m-xylylene adipamide barrier layer, and a polyethylene naphthalate barrier layer.
4. The multilayer coextruded quantum dot diffusion plate of claim 1, wherein the quantum dot layer is a single quantum dot layer or a double quantum dot layer.
5. The multilayer coextruded quantum dot diffusion plate of claim 4, wherein the single quantum dot layer is a single quantum dot layer or a quantum dot diffusion layer;
The double-layer quantum dot layer is a double-layer quantum dot layer formed by superposing a first quantum dot layer and a second quantum dot layer, or a double-layer quantum dot layer formed by superposing a first quantum dot diffusion layer and a second quantum dot diffusion layer.
6. The multi-layered co-extruded quantum dot diffusion plate according to claim 5, wherein when the quantum dot layer in the multi-layered co-extruded quantum dot diffusion plate is a single quantum dot layer,
The layer structure of the multilayer coextrusion quantum dot diffusion plate is sequentially as follows from one side to the other side: the device comprises a first diffusion layer, a first high polymer material barrier layer, a single-layer quantum dot layer, a second high polymer material barrier layer and a second diffusion layer.
7. The multilayer coextruded quantum dot diffusion plate of claim 5, wherein the quantum dot layer in the multilayer coextruded quantum dot diffusion plate is a bilayer quantum dot layer:
The following steps are sequentially carried out from side to side: the quantum dot device comprises a first diffusion layer, a first high polymer material barrier layer, a double-layer quantum dot layer, a second high polymer material barrier layer and a second diffusion layer, wherein the quantum dot layer is a single-layer quantum dot layer or a quantum dot expansion layer.
8. A melt extrusion structure for a multilayer co-extruded quantum dot diffusion plate according to any one of claims 1 to 7, comprising a plurality of extruders, a first distributor, a second distributor.
9. The melt extrusion structure of claim 8 wherein said first and second dispensers independently comprise 2 to 5 extruder feed interfaces.
10. The melt extrusion structure according to claim 9, wherein the number of total extruders of the plurality of extruders is 5 to 10;
The extruder is in communication with 1 or 2 extruder feed interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646772.XU CN220913371U (en) | 2023-09-27 | 2023-09-27 | Multilayer coextrusion quantum dot diffusion plate and melt extrusion structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646772.XU CN220913371U (en) | 2023-09-27 | 2023-09-27 | Multilayer coextrusion quantum dot diffusion plate and melt extrusion structure thereof |
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| Publication Number | Publication Date |
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| CN220913371U true CN220913371U (en) | 2024-05-07 |
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| CN202322646772.XU Active CN220913371U (en) | 2023-09-27 | 2023-09-27 | Multilayer coextrusion quantum dot diffusion plate and melt extrusion structure thereof |
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| CN (1) | CN220913371U (en) |
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- 2023-09-27 CN CN202322646772.XU patent/CN220913371U/en active Active
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