CN113493660B - Blue light quantum dot diffuser plate is prevented to multilayer - Google Patents

Blue light quantum dot diffuser plate is prevented to multilayer Download PDF

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CN113493660B
CN113493660B CN202110840283.0A CN202110840283A CN113493660B CN 113493660 B CN113493660 B CN 113493660B CN 202110840283 A CN202110840283 A CN 202110840283A CN 113493660 B CN113493660 B CN 113493660B
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diffusion plate
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CN113493660A (en
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叶芸
程海涛
郭太良
林映飞
刘裕
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Fuzhou University
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Abstract

The invention relates to a multilayer blue light prevention quantum dot diffusion plate which is a composite diffusion plate with a six-layer structure and comprises a red light quantum dot layer, a first blue light prevention layer, a green light quantum dot layer, a second blue light prevention layer, a light diffusion layer and a water-oxygen blocking layer from bottom to top in sequence, wherein the red light quantum dot layer is arranged at the bottommost layer and is converted into red light when the conduction light of a backlight source or an excitation light layer passes through, the green light quantum dot layer is arranged above the red light quantum dot layer, the first blue light prevention layer is clamped between the red light quantum dot layer and the excitation light layer to absorb the blue light entering an upper-layer component from the excitation light layer, and the second blue light prevention layer is arranged above the green light quantum dot layer to isolate blue light crosstalk from bottom to top. The diffusion plate is beneficial to efficiently absorbing blue light, and improves the light stability and the light display uniformity.

Description

Blue light quantum dot diffuser plate is prevented to multilayer
Technical Field
The invention belongs to the technical field of blue light prevention, and particularly relates to a multilayer blue light prevention quantum dot diffusion plate.
Background
The short-wave blue light is light with relatively high energy with the wavelength of 400nm-480nm, the blue light in the wavelength can increase the toxin amount in a macular area in eyes, seriously threatens the eye ground health of people, and can induce blindness eye diseases. In the blue light band, the really harmful blue light of 400-.
The most anti-blue-light sticking films in the market at present have certain effect on preventing blue light, and are characterized in that: the cost is low, but the blue light prevention efficiency is only about 15% -30%, and the use is inconvenient. Generally, the film filters blue light, so that the whole visual sense is darker, and the picture of a display device is not clear under outdoor strong light, so that the actual blue light prevention effect is doubtful.
The invention patent CN106398011A discloses a blue light removing diffusion plate and a manufacturing method thereof, wherein the blue light removing diffusion plate uses polystyrene as a main raw material, and a light diffusing agent CeO2 (cerium dioxide) with blue light shielding effect is added to convert blue light into other visible light. The first step of the invention is that polystyrene which is a main raw material is fully mixed with CeO2 (cerium dioxide) which is a light diffusant; secondly, adding the mixed solution into a granulator; and thirdly, adding the mixture into a diffusion plate production line to extrude a finished product. The production method adopts the simplest diffusion plate manufacturing method, various substances are mixed to manufacture the diffusion plate, and the manufactured single-layer diffusion plate has poor optical effect; the single-layer structure of the LED lamp ensures that the light conversion efficiency is not high, and causes energy loss of a part of red light and green light; the diffusion plate produced by the invention does not use an oxide layer coating, so that the service life of the diffusion plate is greatly reduced. The invention adopts a multilayer structure method to manufacture the multilayer blue-light-proof diffusion plate aiming at the defects, red and green quantum dots are arranged in a layered mode, the quantum dot light efficiency is greatly improved, meanwhile, the green light total reflection film enables light generated by the green quantum dots not to be influenced by red light generated by the red quantum dots, and the optical effect of the diffusion plate is greatly improved.
The invention patent CN108707381A discloses an anti-glare diffusion plate containing a blue-light-proof layer, which adopts a method of non-volatile matter, blue-light inhibitor and ultraviolet coating to absorb blue light. The blue light inhibitor includes isopropyl alcohol, thiophene, benzene, zinc oxide, calcium carbonate, silicon oxide, zirconium oxide, and titanium dioxide. And coating the blue-light-proof coating by using a reticulate rubber roller, and finally curing by ultraviolet irradiation. The invention improves the instability of the exterior coating, adopts nanometer rare earth oxide (La 2O3, Y2O3, CeO 2) to absorb blue light, and the excitation energy absorbed by the crystal lattice is transferred to activated ions by absorbing the blue light, and the activated ions emit fluorescence with lower energy to return to the ground state. The novel blue light conversion agent layer prepared by the nano rare earth oxide has the functions of improving the color purity of red and green blue light, displaying the color rendering index, contrast, brightness and the like of a device, has the characteristics of environmental protection, conversion of blue light with specific wavelength (400-480 nm), improvement of the adherence of a polymer matrix, less addition amount and the like, solves the problem of unstable blue light prevention effect of an exterior coating after long-term use, and greatly prolongs the service life of a diffusion plate.
How to swiftly effectually prevent blue light to keep the screen not influenced by external highlight, can alleviate eye fatigue simultaneously, prevent that eyes from receiving the injury and becoming the problem that needs to solve at present urgently.
Disclosure of Invention
The invention aims to provide a multilayer blue light-proof quantum dot diffusion plate which is beneficial to efficiently absorbing blue light and improving light stability and light display uniformity.
In order to achieve the purpose, the invention adopts the technical scheme that: a multilayer blue light prevention quantum dot diffusion plate is a composite diffusion plate with a six-layer structure and comprises a red light quantum dot layer, a first blue light prevention layer, a green light quantum dot layer, a second blue light prevention layer, a light diffusion layer and a water-oxygen blocking layer from bottom to top in sequence, wherein the red light quantum dot layer is arranged at the bottommost layer and is converted into red light when the conduction light of a backlight source or an excitation light layer passes through, the green light quantum dot layer is arranged above the red light quantum dot layer, the first blue light prevention layer is clamped between the red light quantum dot layer and the excitation light layer to absorb the blue light entering an upper component from the excitation light layer, and the second blue light prevention layer is arranged above the green light quantum dot layer to isolate the blue light crosstalk from bottom to top; the blue light prevention layer is mainly formed by mixing UV curing type polycarbonate and nano rare earth oxide.
Further, the red light quantum dot layer and the green light quantum dot layer are mainly composed of semiconductor quantum dots and inorganic materials coated on the surfaces of the semiconductor quantum dots, and the metal quantum dots are CdS, CdSe, CdTe or ZnSe.
Further, a film with the wavelength of 1/4 green light is arranged below the green light quantum dot layer, so that the green light generated by the green light quantum dot layer is totally reflected at the film, and the generated green light is not absorbed by the generated red light through the red light quantum dot layer; and an organic light diffusion agent is added into the red light quantum layer.
Further, the thickness ratio of the red quantum dot layer to the green quantum dot layer is 2: 3.
Further, the blue light prevention layer is also provided with a light diffusion agent, an antioxidant, n-hexanol, cyclohexane and dimethyl oxalate; in the blue light prevention layer, the mass percent of the UV curing polycarbonate is 30-40%, the mass percent of the nano rare earth oxide is 20-25%, and the mass percent of the light diffusant is 10-20%.
Further, the nano rare earth oxide is mainly composed of CeO 2 、La 2 O 3 And Y 2 O 3 Mixing the components.
Further, the nano rare earth oxide is prepared by adopting a micro emulsion method, and the preparation method comprises the following steps:
(1) adding a certain amount of surfactant and n-hexanol into cyclohexane under stirring at room temperature, adding a mixed solution of dimethyl oxalate and a rare earth salt solution with a certain concentration, and stirring until the mixed solution becomes a transparent microemulsion;
(2) heating the obtained microemulsion to 50 ℃ for reaction, decompressing and steaming cyclohexane and water, and respectively precipitating with ethanol and deionized water; drying the precipitate at 50 ℃ in vacuum to obtain hydrated cerium oxalate; calcining the nano particles of hydrated cerium oxalate at 700 ℃ in the air to obtain the product La containing the oxidative decomposition product 2 O 3 、Y 2 O 3 And CeO 2 The nano rare earth oxide particles of (1).
Further, the light diffusion layer mainly comprises a light diffusion main body layer and a light diffusion microstructure arranged on the upper surface of the light diffusion main body layer, and the light diffusion layer is mainly made of a mixed material formed by mixing polymethyl methacrylate (PMMA), polyethylene terephthalate (PET) and polyvinyl chloride (PVC) in proportion and a light diffusion agent.
Further, the mixed material is composed of 50-55% of polymethyl methacrylate (PMMA), 30-35% of PET and 10-20% of PVC in percentage by mass.
Further, the water and oxygen blocking layer is composed of UV glue, and the UV glue is mainly composed of, by mass, 40-60% of monomers, 1-6% of photoinitiators and 0.2-1% of auxiliaries.
Compared with the prior art, the invention has the following beneficial effects: the UV-curable polycarbonate and the nano rare earth oxide are used as main principles to form the blue light prevention layer, most harmful blue light can be absorbed, the emitted harmful blue light is greatly reduced, the light stability and the light display uniformity are improved, and the UV-curable polycarbonate and the nano rare earth oxide are suitable for the field of liquid crystal display.
Drawings
Fig. 1 is a schematic structural diagram of a multilayer blue-light-proof quantum dot diffusion plate according to an embodiment of the invention.
FIG. 2 is a schematic diagram of total reflection of a green quantum dot layer according to an embodiment of the present invention.
FIG. 3 is a schematic flow chart of the preparation of nano rare earth oxide in the embodiment of the invention.
Fig. 4 is a schematic flow chart illustrating a manufacturing process of the multilayer blue-light-proof quantum dot diffusion plate according to the embodiment of the invention.
In the figure: 1. a water oxygen barrier layer; 2. a light diffusion layer; 21. a light diffusing microstructure; 22. a light diffusing body layer; 3. a second blue-light preventing layer; 4. a green quantum dot layer; 5. a first blue-light preventing layer; 6. a red light quantum dot layer; 7. incident green light; 8. totally reflecting green light; 9. and (3) a green light total reflection film.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, this embodiment provides a multilayer blue light prevention quantum dot diffusion plate, which is a composite diffusion plate with six layers, including a red light quantum dot layer 6, a first blue light prevention layer 5, a green light quantum dot layer 4, a second blue light prevention layer 3, a light diffusion layer 2, and a water-oxygen blocking layer 1 from bottom to top in sequence, where the red light quantum dot layer is disposed at the bottom layer, when the conduction light of the backlight source or the exciting light layer passes through, the conduction light is converted into red light, the color conversion of the monochromatic quantum dot layer avoids the phenomenon of reabsorption, the green light quantum dot layer is arranged above the red light quantum dot layer, the first blue light prevention layer is clamped between the green light quantum dot layer and the red light quantum dot layer, so as to absorb the blue light with the wavelength of 430-480 nm which is harmful to human eyes when the exciting light layer enters the upper part, and the second blue light prevention layer is arranged above the green light quantum dot layer to isolate blue light crosstalk from bottom to top.
In this embodiment, the red quantum dot layer and the green quantum dot layer are mainly composed of semiconductor quantum dots and inorganic materials coated on the surfaces of the semiconductor quantum dots, and the metal quantum dots are CdS, CdSe, CdTe or ZnSe. The surface of the semiconductor quantum dot is coated with a layer of inorganic material, so that the core can be protected and the luminous efficiency can be improved. In addition, the CdS layer is coated on the surface of the CdSe quantum dot, so that the quantum yield can reach 50%.
As shown in fig. 2, in this embodiment, a thin film with a wavelength of 1/4 is disposed below the green quantum dot layer, so that the green light generated by the green quantum dot layer is totally reflected at the thin film, and the generated green light is not absorbed by the generated red light through the red quantum dot layer, thereby greatly improving the light emitting efficiency; compared with the common diffusant-organosilicon material, a small amount of inorganic diffusant can obtain the same glare elimination effect and diffusion effect, and the diffusion plate has good uniformity in spectrum, and the uniformity of emergent light of the diffusion plate is greatly improved.
In this embodiment, the ratio of the thickness of the red quantum dot layer to the green quantum dot layer is 2: 3. When the mass ratio of the different quantum dot materials is 2: when 3, white light in the range of 2700-.
In the embodiment, the blue light prevention layer is mainly formed by mixing UV curing type polycarbonate and nano rare earth oxide. The nanometer rare earth oxide substrate crystal lattice absorbs blue light, excitation energy absorbed by the crystal lattice is transferred to activated ions, and the activated ions emit fluorescence with lower energy to return to a ground state. In addition, the blue light prevention layer is also provided with a light diffusion agent, an antioxidant, n-hexanol, cyclohexane and dimethyl oxalate; in the blue light prevention layer, the mass percent of the UV curing polycarbonate is 30-40%, the mass percent of the nano rare earth oxide is 20-25%, and the mass percent of the light diffusant is 10-20%.
The nano rare earth oxide mainly consists of CeO 2 、La 2 O 3 And Y 2 O 3 Mixing the components. The nanometer rare earth oxide has the advantages of good properties of malleability and ductility, is powdery at high temperature and has strong reactivity. Wherein the melting point of common nanometer rare earth oxide is 798 ℃, and lanthanum oxide (La) 2 O 3 ) Has a melting point of 2315 ℃ and yttrium oxide (Y) 2 O 3 ) The melting point is 2410 ℃, the difference of the melting points is obvious, and the thermal stability of the blue light prevention layer is greatly improved.
The nano rare earth oxide is prepared by a microemulsion method, as shown in figure 3, and the preparation method comprises the following steps:
(1) adding a certain amount of surfactant and n-hexanol into cyclohexane under stirring at room temperature, adding a mixed solution of dimethyl oxalate and a rare earth salt solution with a certain concentration, and stirring until the mixed solution becomes a transparent microemulsion;
(2) heating the obtained microemulsion to 50 ℃ for reaction, decompressing and distilling to remove cyclohexane and water, and respectively precipitating by using ethanol and deionized water. The precipitate was dried under vacuum at 50 ℃ to obtain cerium oxalate hydrate. Calcining the nano particles by hydrated cerium oxalate at 700 ℃ in the air to obtain the product La containing the oxidative decomposition product 2 O 3 、Y 2 O 3 And CeO 2 The nano rare earth oxide particles of (1).
In this example, 50ml of surfactant and 0.5g of n-hexanol were added to 60ml of cyclohexane under stirring at room temperature, 50ml of 50% strength dimethyl oxalate and 50ml of rare earth salt solution were added and stirred until a clear microemulsion was obtained. Heating the microemulsion to 50 ℃ to react for 20h, decompressing and distilling to remove cyclohexane and water, and respectively precipitating with 75% ethanol and deionized water three times. And drying the precipitate at 50 ℃ for 3h in vacuum to obtain white cerium oxalate hydrate. The hydrated cerium oxalate is used for roasting the nano particles in the air at 700 ℃, and then the nano rare earth oxide can be obtained.
In the embodiment, the light diffusion layer mainly comprises a light diffusion main body layer and a light diffusion microstructure arranged on the upper surface of the light diffusion main body layer, and the light diffusion layer is mainly made of a mixed material formed by mixing polymethyl methacrylate (PMMA), polyethylene terephthalate (PET) and polyvinyl chloride (PVC) in proportion and a light diffusion agent. Preferably, the mixed material consists of 50-55% of polymethyl methacrylate (PMMA), 30-35% of PET and 10-20% of PVC in percentage by mass.
In the embodiment, the water and oxygen blocking layer is composed of UV glue, and the UV glue is mainly composed of, by mass, 40-60% of monomers, 1-6% of photoinitiators and 0.2-1% of auxiliaries.
In this embodiment, a multilayer co-extrusion flow extruder and a high-speed mode of a co-rotating twin-screw extruder are used to manufacture the multilayer blue-proof quantum dot diffusion plate, as shown in fig. 4, which includes the following steps:
(1) mixing materials: a, B, C, D, E five distinguishable conical flasks are respectively taken, corresponding labels are attached to the conical flasks, and 100 parts of CdS, 95 parts of CdSe, 90 parts of CdTe, 95 parts of ZnSe and other red quantum dots are proportionally weighed into the A conical flask. Adding 1 part of a mixture of inorganic diffusant materials of nano barium sulfate, calcium carbonate and silicon dioxide, wherein the mass ratio of the inorganic diffusant materials to the nano barium sulfate to the nano calcium carbonate to the nano silicon dioxide is 50%, and the mass ratio of the inorganic diffusant materials to the nano calcium carbonate to the nano silicon dioxide to the nano calcium carbonate to the nano silicon dioxide to the nano barium sulfate to the nano calcium carbonate to the nano silicon dioxide to the barium sulfate to the calcium carbonate to the silicon dioxide. 2 parts of organic light diffusant of acrylic type, styrene type and acrylic resin are added, and the mass ratio of the acrylic type, the styrene type and the acrylic resin is 10%, 25% and 65% respectively. The concentration of the organic light diffusion agent is 50%, and 10 parts of organic solvent such as oleylamine, dodecyl mercaptan, oleic acid, TOPO and TOP mixture is added into a conical flask, and the mass ratio of each organic solvent is equal.
And 85 parts of polycarbonate powder and 100 parts of nano rare earth oxide are added into the conical flask B according to the proportion, wherein the nano rare earth oxide La2O3, Y2O3 and CeO2 account for 50 percent, 40 percent and 10 percent respectively by mass. 10 parts of light diffusion particles, including polymethyl methacrylate (PMMA), PET, PVC and light diffusion agents, wherein the mass ratio of the light diffusion agents is equal. At the same time, 20 parts of antioxidant were added.
And a proper amount of 9. green light total reflection film is placed in the C conical flask, so that the thickness of 1/4 the green light wavelength can be formed during extrusion.
And 150 parts of CdS, 145 parts of CdSe, 130 parts of CdTe and 145 parts of ZnSe green quantum dots are weighed and added into the D-shaped conical flask in proportion. 3 parts of organic light diffusant of acrylic type, styrene type and acrylic resin are added, and the mass ratio of the acrylic type, the styrene type and the acrylic resin is 10%, 25% and 65% respectively. The concentration of the organic light diffusant is 40%, and the concentration of the organic light diffusant can form a remarkable concentration difference with that of the organic light diffusant in the A-shaped conical flask. And adding 10 parts of organic solvent such as oleylamine, dodecyl mercaptan, oleic acid, TOPO and TOP mixture into the conical flask, wherein the mass ratio of each organic solvent is equal. The contents of the D-Erlenmeyer flask were dissolved.
E Erlenmeyer flasks were charged with light diffusing particles comprising 50% by mass poly (methyl methacrylate) (PMMA), 25% by mass PET and 25% by mass Poly (PVC) light diffusing agent, and an equal amount of organic solvent such as oleylamine, dodecylmercaptan, oleic acid, TOPO, TOP or mixtures thereof was added.
In the burdening process, the ratio of the red quantum dots to the green quantum dots is 2:3, experiments show that positive white light can be obtained when the ratio of the red quantum dots to the green quantum dots is 2:3, and the half-peak widths of red, blue and green in a spectrum of a device are respectively 30 nm, 25nm and 38 nm, so that the device has good monochromaticity and high color purity.
(2) Solution centrifugal stirring: the mixed solution in A, B, C, D, E conical flask is sequentially put into a stirrer for centrifugal stirring treatment, the rotating speed of 800r/min is applied, the temperature of the stirrer is kept at 320 ℃ for 10 minutes until all the substances in the solution of the stirrer are uniformly mixed.
(3) And (3) solution drying treatment: and (3) adding 75% of anhydrous calcium chloride into the solution subjected to centrifugal stirring in the step (2) for drying, filling the dried solution into a reaction kettle, and controlling the temperature of a water bath device in the reaction kettle to be constant and keeping the temperature at 85 ℃ to perform primary pulp preparation treatment. And cooling the primary pulp solution to obtain five different cooled primary pulps.
(4) Injection molding: and sequentially placing the five cooled primary pulps into corresponding extruder hoppers, and carrying out extrusion molding by adopting a five-layer laboratory multilayer co-extrusion flow extruder to obtain the blue-light-proof quantum dot diffusion plate.
And (3) keeping the injection molding temperature at 260 ℃ during injection molding, and controlling the injection molding time to be 10 min. And controlling an extruder during injection molding to keep the thickness of the obtained blue-light-proof quantum dot diffusion plate between 1.5mm and 2 mm.
(5) And (3) manufacturing and forming: and coating a layer 1 of water-oxygen barrier film on the surface of the formed quantum dot diffusion plate, and coating a layer of UV glue on the barrier film. After the quantum dot diffusion plate is formed, the diffusion plate is pulled to rotate on the roller wheel, and optical grains can be pressed on the light-emitting surface of the quantum dot diffusion plate in the movement process of the diffusion plate.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (8)

1. The multilayer blue light prevention quantum dot diffusion plate is characterized in that the quantum dot diffusion plate is a composite diffusion plate with a six-layer structure, and comprises a red light quantum dot layer, a first blue light prevention layer, a green light quantum dot layer, a second blue light prevention layer, a light diffusion layer and a water-oxygen blocking layer from bottom to top in sequence, wherein the red light quantum dot layer is arranged at the bottommost layer and is converted into red light when the conduction light of a backlight source or an excitation light layer passes through, the green light quantum dot layer is arranged above the red light quantum dot layer, the first blue light prevention layer is clamped between the red light quantum dot layer and the excitation light layer to absorb the blue light entering an upper-layer component from the excitation light layer, and the second blue light prevention layer is arranged above the green light quantum dot layer to isolate blue light crosstalk from bottom to top; the blue light prevention layer is mainly formed by mixing UV curing polycarbonate and nano rare earth oxide;
a film with the wavelength of 1/4 is arranged below the green light quantum dot layer, so that the green light generated by the green light quantum dot layer is totally reflected at the film, and the generated green light is not absorbed by the generated red light through the red light quantum dot layer; an organic light diffusant is added into the red light quantum layer;
the blue light prevention layer is also provided with a light diffusant, an antioxidant, n-hexanol, cyclohexane and dimethyl oxalate; in the anti-blue-light layer, the mass percent of the UV curing polycarbonate is 30-40%, the mass percent of the nano rare earth oxide is 20-25%, and the mass percent of the light diffusant is 10-20%.
2. The multilayer blue-proof quantum dot diffusion plate according to claim 1, wherein the red and green quantum dot layers are mainly composed of semiconductor quantum dots and inorganic materials coated on the surfaces of the semiconductor quantum dots, and the semiconductor quantum dots are CdS, CdSe, CdTe or ZnSe.
3. The multi-layered blue-proof quantum dot diffusion plate as claimed in claim 1, wherein the thickness ratio of the red quantum dot layer to the green quantum dot layer is 2: 3.
4. The multilayer blue-light-proof quantum dot diffusion plate according to claim 1, wherein the nano rare earth oxide is mainly composed of CeO 2 、La 2 O 3 And Y 2 O 3 Mixing the components.
5. The multilayer blue-light-proof quantum dot diffusion plate according to claim 4, wherein the nano rare earth oxide is prepared by a micro-emulsion method, and the preparation method comprises the following steps:
(1) adding a certain amount of surfactant and n-hexanol into cyclohexane under stirring at room temperature, adding a mixed solution of dimethyl oxalate and a rare earth salt solution with a certain concentration, and stirring until the mixed solution becomes a transparent microemulsion;
(2) heating the obtained microemulsion to 50 ℃ for reaction, decompressing and steaming out cyclohexane and water, and respectively precipitating with ethanol and deionized water; drying the precipitate at 50 ℃ in vacuum to obtain hydrated cerium oxalate; calcining the hydrated cerium oxalate in the air at 700 ℃ to obtain the CeO including the oxidative decomposition product 2 The nano rare earth oxide particles of (1).
6. The multi-layer blue-light-proof quantum dot diffusion plate according to claim 1, wherein the light diffusion layer mainly comprises a light diffusion main body layer and a light diffusion microstructure arranged on the upper surface of the light diffusion main body layer, and the light diffusion layer is mainly made of a mixed material formed by proportionally mixing polymethyl methacrylate (PMMA), polyethylene terephthalate (PET) and polyvinyl chloride (PVC) and a light diffuser.
7. The multilayer blue-light-proof quantum dot diffusion plate as claimed in claim 6, wherein the mixed material is composed of 50-55% of polymethyl methacrylate (PMMA), 30-35% of PET and 10-20% of PVC by mass.
8. The multilayer blue-light-proof quantum dot diffusion plate according to claim 1, wherein the water-oxygen barrier layer is composed of UV glue, and the UV glue is mainly composed of 40-60% of monomer, 1-6% of photoinitiator and 0.2-1% of auxiliary agent by mass.
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