A diffusion plate for increasing the service life of quantum dots

Abstract

In order to further improve the lifespan of quantum dots in a diffusion plate, the present invention proposes a diffusion plate for improving the service life of quantum dots. The diffusion plate is divided into three layers, including: a first outer surface layer, an intermediate layer, and a second outer surface layer. The first outer surface layer is a transparent moisture barrier layer, which is mainly designed to solve the intolerance of quantum dots to water. The innovation of the present invention lies in: the intermediate layer includes a quantum dot body, a nitrogen balloon and a skeleton layer PS, wherein the nitrogen balloon is wrapped around the quantum dot body. Since the diameter of the nitrogen balloon is 1‑20 um, the diameter of the quantum dot body is 1‑5 nm, and the PS is a continuum, the quantum dot body is scattered between adjacent nitrogen balloons in the skeleton layer PS body, and the nitrogen balloon can effectively isolate the quantum dot body from oxygen, shortening the time for the quantum dot body to be oxidized by oxygen, thereby achieving an extension of the service life of the quantum dot body.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic materials, and more specifically, to a diffusion plate for improving the service life of quantum dots. Background Art

[0002] Light diffusers usually use chemical or physical means to cause the physical phenomena of refraction, reflection and scattering to occur when light encounters two media with different refractive indices during its path. By adding inorganic or organic light diffusers to a high molecular polymer substrate with good light transmittance, or by arranging an array of micro-feature structures on the surface of the substrate to artificially adjust the light, the light is refracted, reflected and scattered in different directions, thereby changing the path of the light and achieving full scattering of the incident light to produce an optical diffusion effect. Light diffusers are widely used in liquid crystal displays, LED lighting and imaging display systems.

[0003] With the continuous development of display and lighting technology, excellent light diffusion panels must not only meet the requirements of high light dispersion, softness, and uniform color temperature, but also increasingly highlight indicators such as how to reduce the harm of blue light, improve the color gamut of transmitted light, and achieve a spectrum that is more consistent with natural light based on LED as the light source.

[0004] The prior patent (application number: 201710081687.X) discloses a process for manufacturing a quantum dot diffuser plate, a process for manufacturing a light guide plate, and the manufactured light guide plate. Light guide plates are currently widely used in the backlight and lighting industries. However, due to the limitations of their structure and optical properties, light guide plates cannot be used in direct-type backlight modules and some LED lamps. Therefore, manufacturing a diffuser plate with quantum dots is the key to solving the problem.

[0005] However, due to the characteristics of quantum dots being afraid of water and oxygen, the existing technology is to have two high-barrier PET layers above and below the quantum dot layer. The quantum dot layer is composed of glue and quantum dots, which can prevent water and oxygen from entering the quantum dot layer easily. However, the production cost of the PET layer is relatively high, and water and oxygen are easily infiltrated into the edges on both sides. Another method is to place the quantum dots directly in a diffusion plate made of PMMA or PS. Such a diffusion plate material is easy to absorb water and oxygen, causing the quantum dots to be easily destroyed. Summary of the invention

[0006] In view of the above situation, in order to further improve the lifespan of quantum dots in the diffusion plate, the present invention proposes a diffusion plate for improving the service life of quantum dots. The diffusion plate is divided into three layers, including: a first outer surface layer, an intermediate layer, and a second outer surface layer. The first outer surface layer is a transparent moisture barrier layer, which is mainly designed to solve the intolerance of quantum dots to water. The innovation of the present invention lies in: the intermediate layer includes a quantum dot body, a nitrogen balloon and a skeleton layer PS, wherein the quantum dot body is wrapped with a nitrogen balloon. Since the diameter of the nitrogen balloon is 1-20um, the diameter of the quantum dot body is 1-5nm, and the PS is a continuum, the quantum dot body is sporadically dispersed between adjacent nitrogen balloons in the skeleton layer PS body. The nitrogen balloon can effectively isolate the quantum dot body from oxygen, shortening the time for the quantum dot body to be oxidized by oxygen, thereby achieving an extension of the service life of the quantum dot body.

[0007] A diffusion plate for improving the service life of quantum dots, comprising: a first outer surface layer, an intermediate layer, and a second outer surface layer, wherein the first outer surface layer is divided into an upper surface and a lower surface, the intermediate layer is divided into an upper surface and a lower surface, the second outer surface layer is divided into an upper surface and a lower surface, the upper surface of the intermediate layer is combined with the lower surface of the first outer surface layer, and the lower surface of the intermediate layer is combined with the upper surface of the second outer surface layer; characterized in that: the intermediate layer comprises a quantum dot body, a nitrogen balloon and a skeleton layer PS6, wherein the quantum dot body is wrapped with a nitrogen balloon, and the quantum dot body is sporadically dispersed between adjacent nitrogen balloons in the skeleton layer PS body.

[0008] Furthermore, the PS in the skeleton layer PS6 is a continuum

[0009] Furthermore, one or more of an anti-UV agent, an antistatic agent, and a light diffuser are added to the first outer surface layer and the second outer surface layer.

[0010] Furthermore, the nitrogen balloon is 1-20 μm.

[0011] Furthermore, the porous silicon oxide in the first outer surface layer accounts for 1-2% of the total mass of the first outer surface layer, and the porous silicon oxide in the second outer surface layer accounts for 1-2% of the total mass of the second outer surface layer.

[0012] Furthermore, the nitrogen balloon in the middle layer accounts for 1-2% of the total mass of the middle layer.

[0013] Furthermore, the diameter of the quantum dot body is 1-5nm.

[0014] Furthermore, the first outer surface layer is a transparent moisture barrier layer.

[0015] The advantages of the present invention are simple design, easy use, integral molding design, easy overall installation and use, high efficiency, high pass rate, and reduced cost. The first outer surface layer is a transparent moisture barrier layer, which is mainly designed to solve the intolerance of quantum dots to water. The innovation of the present invention is that the intermediate layer includes a quantum dot body, a nitrogen balloon and a skeleton layer PS, wherein the nitrogen balloon is wrapped around the quantum dot body. Since the diameter of the nitrogen balloon is 1-20um, the diameter of the quantum dot body is 1-5nm, and the PS is a continuum, the quantum dot body is scattered between adjacent nitrogen balloons in the skeleton layer PS body. The nitrogen balloon can effectively isolate the quantum dot body from oxygen, shortening the time for the quantum dot body to be oxidized by oxygen, thereby achieving an extension of the service life of the quantum dot body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a diffusion plate of a specific implementation method.

[0017] Figure 2 It is a schematic structural diagram of the intermediate layer of a specific implementation method.

[0018] Description of main components:

[0019] First outer surface layer 1 Middle Layer 2 Second outer surface layer 3 Quantum Dots 4 Nitrogen Balloon 5 Skeleton layer PS 6

[0020] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, it is a structural schematic diagram of a diffusion plate of a specific implementation method; Figure 2 As shown, it is a schematic structural diagram of the middle layer of a specific implementation method.

[0022] A diffusion plate for improving the service life of quantum dots, comprising: a first outer surface layer 1, an intermediate layer 2, and a second outer surface layer 3, wherein the first outer surface layer 1 is divided into an upper surface and a lower surface, the intermediate layer 2 is divided into an upper surface and a lower surface, the second outer surface layer 3 is divided into an upper surface and a lower surface, the upper surface of the intermediate layer 2 is combined with the lower surface of the first outer surface layer 1, and the lower surface of the intermediate layer 2 is combined with the upper surface of the second outer surface layer 3; characterized in that: the intermediate layer 2 comprises a quantum dot body 4, a nitrogen balloon 5 and a skeleton layer PS6, wherein the nitrogen balloon 5 is wrapped around the quantum dot body 4, and the quantum dot body 4 is sporadically dispersed between adjacent nitrogen balloons 5 in the skeleton layer PS6 body.

[0023] The PS in the skeleton layer PS6 is a continuum

[0024] One or more of an anti-UV agent, an antistatic agent, and a light diffuser are added to the first outer surface layer 1 and the second outer surface layer 3 .

[0025] The nitrogen balloon 5 has a diameter of 1-20 μm.

[0026] The porous silicon oxide in the first outer surface layer 1 accounts for 1-2% of the total mass of the first outer surface layer 1 , and the porous silicon oxide in the second outer surface layer 3 accounts for 1-2% of the total mass of the second outer surface layer 3 .

[0027] The nitrogen balloon 5 in the middle layer 2 accounts for 1-2% of the total mass of the middle layer 2 .

[0028] The diameter of the quantum dot body 4 is 1-5 nm.

[0029] The first outer surface layer 1 is a transparent moisture barrier layer.

[0030] The advantages of the present invention are simple design, easy use, integral molding design, easy overall installation and use, high efficiency, high pass rate, and reduced cost. The first outer surface layer 1 is a transparent moisture barrier layer, which is mainly designed to solve the intolerance of quantum dots to water. The innovation of the present invention is that the intermediate layer includes a quantum dot body 4, a nitrogen balloon 5 and a skeleton layer PS6, wherein the nitrogen balloon 5 is wrapped around the quantum dot body 4. Since the diameter of the nitrogen balloon 5 is 1-20um, the diameter of the quantum dot body 4 is 1-5nm, and PS is a continuum, the quantum dot body 4 is scattered between adjacent nitrogen balloons 5 in the skeleton layer PS6 body. The nitrogen balloon 5 can effectively isolate the quantum dot body 4 from oxygen, shortening the time for the quantum dot body 4 to be oxidized by oxygen, thereby achieving an extension of the service life of the quantum dot body.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A diffusion plate for increasing the service life of quantum dots, comprising: A first outer surface layer (1), an intermediate layer (2), and a second outer surface layer (3), wherein the first outer surface layer (1) is divided into an upper surface and a lower surface, the intermediate layer (2) is divided into an upper surface and a lower surface, and the second outer surface layer (3) is divided into an upper surface and a lower surface, the upper surface of the intermediate layer (2) is combined with the lower surface of the first outer surface layer (1), and the lower surface of the intermediate layer (2) is combined with the upper surface of the second outer surface layer (3); characterized in that: the intermediate layer (2) includes a quantum dot body (4), a nitrogen balloon (5), and a skeleton layer PS (6), wherein the quantum dot body (4) is surrounded by the nitrogen balloon (5), and the quantum dot body (4) is scattered between adjacent nitrogen balloons (5) in the main body of the skeleton layer PS (6).

2. The diffusion plate for increasing the service life of quantum dots according to claim 1, characterized in that: The PS in the skeleton layer PS (6) is a continuum.

3. The diffusion plate for increasing the service life of quantum dots according to claim 1, characterized in that: One or more of an anti-UV agent, an antistatic agent, and a light diffuser are added to the first outer surface layer (1) and the second outer surface layer (3).

4. The diffusion plate for increasing the service life of quantum dots according to claim 1, characterized in that: The diameter of the nitrogen balloon (5) is 1-20 μm.

5. The diffusion plate for increasing the service life of quantum dots as claimed in claim 1, characterized in that: The porous silicon oxide in the first outer surface layer (1) accounts for 1-2% of the total mass of the first outer surface layer (1), and the porous silicon oxide in the second outer surface layer (3) accounts for 1-2% of the total mass of the second outer surface layer (3).

6. The diffusion plate for increasing the service life of quantum dots according to claim 1, characterized in that: The nitrogen balloon (5) in the middle layer (2) accounts for 1-2% of the total mass of the middle layer (2).

7. The diffusion plate for increasing the service life of quantum dots according to claim 1, characterized in that: The diameter of the quantum dot (4) is 1-5 nm.

8. The diffusion plate for increasing the service life of quantum dots as claimed in claim 1, characterized in that: The first outer surface layer (1) is a transparent moisture barrier layer.

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