Quantum dot diffusion film capable of selectively transmitting light

Abstract

The utility model discloses a quantum dot diffusion film capable of selectively transmitting light, which belongs to the technical field of diffusion films, and comprises a PET base layer, a brightening layer, a spectrum selective light transmission layer, a quantum dot light guide part and a light diffusion part, the thickness of the PET base layer is 1-1.8 mu m, the brightening layer is arranged on the upper side of the PET base layer, the thickness of the brightening layer is 0.8-1.5 mu m, and the spectrum selective light transmission layer is arranged on the light diffusion part. The spectral selective light-transmitting layer is arranged on the upper side of the brightening layer, the thickness of the spectral selective light-transmitting layer is 2-2.8 microns, the quantum dot light guide part is arranged on the upper side of the spectral selective light-transmitting layer, the light diffusion part is arranged on the upper side of the quantum dot light guide part, the quantum dot light guide part comprises an A resin light guide layer, a quantum dot layer and a B resin light guide layer, the A resin light guide layer is arranged on the upper side of the spectrum selective light transmission layer, the B resin light guide layer is arranged on the upper side of the A resin light guide layer, and the quantum dot layer is arranged between the A resin light guide layer and the B resin light guide layer. The quantum dot diffusion film solves the problem that the light transmission selectivity of the quantum dot diffusion film is low.

Description

Technical Field

[0001] The utility model relates to the technical field of diffusion films, in particular to a quantum dot diffusion film capable of selectively transmitting light. Background Art

[0002] Diffusion film is widely used in display screens. It has the function of diffusing light, that is, light will be scattered on its surface, and the light will be spread softly and evenly. The basic structure of most diffusion films is to coat optical light-scattering particles on both sides of a transparent substrate such as PET. The diffusion film mainly plays the role of correcting the diffusion angle in the backlight structure, which will increase the light radiation area, but reduce the light intensity per unit area. After the light source is diffused by the diffusion material, it can become a secondary light source with a larger area, better uniformity and stable color. As for the light source emitted by the screen, in addition to softening the light, it is best to process the light in a certain way.

[0003] In the existing technology, we can apply appropriate film to the screen, but the fit between the film and the screen and the function of the film itself will affect the light, and the film cannot be applied too much, and too much thickness will affect the use of the screen. For this reason, we propose a selectively light-transmitting quantum dot diffusion film. Utility Model Content

[0004] The utility model is to solve the shortcomings in the prior art and propose a selectively light-transmitting quantum dot diffusion film, which solves the problem of low light transmittance selectivity of the quantum dot diffusion film.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A selectively light-transmitting quantum dot diffusion film comprises a PET base layer, a brightening layer, a spectrally selective light-transmitting layer, a quantum dot light-guiding portion and a light-diffusing portion, wherein the PET base layer has a thickness of 1-1.8 μm, the brightening layer is arranged on the upper side of the PET base layer, the brightening layer has a thickness of 0.8-1.5 μm, the spectrally selective light-transmitting layer is arranged on the upper side of the brightening layer, the spectrally selective light-transmitting layer has a thickness of 2-2.8 μm, the quantum dot light-guiding portion is arranged on the upper side of the spectrally selective light-transmitting layer, and the light-diffusing portion is arranged on the upper side of the quantum dot light-guiding portion.

[0007] Through the above technical solution, the spectrally selective light-transmitting layer, the quantum dot light-guiding portion and the light-diffusing portion cooperate to provide the selectively light-transmitting quantum dot diffusion film with a function of autonomously selecting the diffusion of light source quantum dots.

[0008] Preferably, the quantum dot light guiding part includes an A resin light guiding layer, a quantum dot layer and a B resin light guiding layer, the A resin light guiding layer is arranged on the upper side of the spectrally selective light transmitting layer, the B resin light guiding layer is arranged on the upper side of the A resin light guiding layer, and the quantum dot layer is arranged between the A resin light guiding layer and the B resin light guiding layer.

[0009] Through the above technical solution, the quantum dot layer can provide a quantum dot light-guiding function, and the A resin light-guiding layer cooperates with the B resin light-guiding layer to provide a protection function for the quantum dot layer.

[0010] Preferably, the light diffusion part includes a light diffusion layer and a diffusion particle layer, the light diffusion layer is arranged on the upper side of the B resin light guide layer, and the diffusion particle layer is arranged inside the light diffusion layer.

[0011] Through the above technical solution, the light diffusion layer and the diffusion particle layer can provide a light source diffusion function.

[0012] Preferably, a light-guiding and heat-resistant layer is disposed on the upper side of the light diffusion layer.

[0013] Through the above technical solution, the light-guiding heat-resistant layer can provide a light-guiding and heat-dissipating function, thereby preventing the selectively light-transmissive quantum dot diffusion film from being heated by strong light.

[0014] Preferably, a pressure-resistant layer is provided on the upper side of the light-guiding heat-resistant layer.

[0015] Through the above technical solution, the pressure-resistant layer can provide a buffering and pressure-resistant function, thereby increasing a certain degree of pressure-resistant elasticity for the selectively light-transmissive quantum dot diffusion film.

[0016] Preferably, an antistatic layer is provided on the upper side of the pressure-resistant layer.

[0017] Through the above technical solution, the antistatic layer can eliminate the static electricity generated by the selectively light-transmissive quantum dot diffusion film.

[0018] Preferably, a wear-resistant layer is provided on the upper side of the antistatic layer.

[0019] Through the above technical solution, the wear-resistant layer can effectively protect the selectively light-transmissive quantum dot diffusion film from being worn.

[0020] Preferably, a back adhesive layer is provided on the lower side of the PET base layer.

[0021] A release layer is arranged on the lower side of the back adhesive layer.

[0022] Through the above technical solution, the release layer and the back adhesive layer can provide a selective attachment function for the selectively light-transmissive quantum dot diffusion film.

[0023] In summary, in the present invention, the spectrally selective light-transmitting layer, the quantum dot light-guiding portion and the light-diffusing portion cooperate to provide the selectively light-transmitting quantum dot diffusion film with a function of autonomously selecting the diffusion of light source quantum dots.

[0024] In the utility model, the light-guiding heat-resistant layer can provide a light-guiding and heat-dissipating function, thereby preventing the selectively light-transmissive quantum dot diffusion film from being heated by strong light.

[0025] In the utility model, the release layer cooperates with the back adhesive layer to provide a selective attachment function for the selectively light-transmissive quantum dot diffusion film.

[0026] In the utility model, the wear-resistant layer can effectively protect the quantum dot diffusion film which can selectively transmit light, so that the quantum dot diffusion film will not be worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the cross section of the utility model.

[0028] In the figure: 1. PET base layer; 2. Brightness enhancement layer; 3. Spectrally selective light-transmitting layer; 4. Quantum dot light-guiding part; 41. A resin light-guiding layer; 42. Quantum dot layer; 43. B resin light-guiding layer; 5. Light diffusion part; 51. Light diffusion layer; 52. Diffusion particle layer; 6. Light-guiding heat-resistant layer; 7. Pressure-resistant layer; 8. Antistatic layer; 9. Wear-resistant layer; 10. Back adhesive layer; 11. Release layer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] like Figure 1As shown, a selectively light-transmissive quantum dot diffusion film comprises a PET base layer 1, a brightness enhancement layer 2, a spectrally selective light-transmissive layer 3, a quantum dot light-guiding portion 4 and a light-diffusing portion 5, wherein the thickness of the PET base layer 1 is 1-1.8 μm, the brightness enhancement layer 2 is arranged on the upper side of the PET base layer 1, the thickness of the brightness enhancement layer 2 is 0.8-1.5 μm, the spectrally selective light-transmissive layer 3 is arranged on the upper side of the brightness enhancement layer 2, the thickness of the spectrally selective light-transmissive layer 3 is 2-2.8 μm, the quantum dot light-guiding portion 4 is arranged on the upper side of the spectrally selective light-transmissive layer 3, the quantum dot light-guiding portion 4 comprises an A resin light-guiding layer 41, a quantum dot layer 42 and a B resin light-guiding layer 43, the A resin light-guiding layer 41 is arranged on the upper side of the spectrally selective light-transmissive layer 3, the B resin light-guiding layer The optical layer 43 is arranged on the upper side of the A resin light-guiding layer 41, the quantum dot layer 42 is arranged between the A resin light-guiding layer 41 and the B resin light-guiding layer 43, the light diffusion part 5 is arranged on the upper side of the quantum dot light-guiding part 4, the light diffusion part 5 includes a light diffusion layer 51 and a diffusion particle layer 52, the light diffusion layer 51 is arranged on the upper side of the B resin light-guiding layer 43, the diffusion particle layer 52 is arranged in the light diffusion layer 51, a light-guiding heat-resistant layer 6 is arranged on the upper side of the light-guiding heat-resistant layer 6, a pressure-resistant layer 7 is arranged on the upper side of the pressure-resistant layer 7, an anti-static layer 8 is arranged on the upper side of the anti-static layer 7, a wear-resistant layer 9 is arranged on the upper side of the anti-static layer 8, a back adhesive layer 10 is arranged on the lower side of the PET base layer 1, and a release layer 11 is arranged on the lower side of the back adhesive layer 10.

[0031] In this embodiment, the spectrally selective light-transmitting layer 3 is a nano coating. Spectral selectivity means that the nano coating has selective absorption, transmission or reflection of sunlight and contains at least one or more nano materials, that is, a selective effect on light is produced through a specific material. When light is irradiated from a low-density medium such as air to a high-density solid surface at a certain incident angle, part of the light is reflected at the same angle; when the solid surface is uneven, part of the light is scattered, that is, a selective effect is formed on the light;

[0032] The light-guiding heat-resistant layer 6 is a polycarbonate composite film. Polycarbonate is a transparent, high-hardness, heat-resistant, corrosion-resistant, and impact-resistant polymer material. It is also an excellent light-guiding material. It can work at high temperatures and has good durability and stability.

[0033] The antistatic layer 8 is made of an antistatic film. The antistatic film is made by adding imported antistatic agents to PE raw materials to make its surface resistance reach 10~10Ω. The friction itself does not generate static electricity. After high-temperature shaping, it is durable and wear-resistant, thus playing a good antistatic effect and avoiding the damage of static electricity to human products and work sites.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A selectively light-transmitting quantum dot diffusion film, characterized in that: It comprises a PET base layer (1), wherein the thickness of the PET base layer (1) is 1-1.8 μm; A brightness enhancement layer (2), wherein the brightness enhancement layer (2) is disposed on the upper side of the PET base layer (1), and the thickness of the brightness enhancement layer (2) is 0.8-1.5 μm; A spectrally selective light-transmitting layer (3), wherein the spectrally selective light-transmitting layer (3) is arranged on the upper side of the brightness-enhancing layer (2), and the thickness of the spectrally selective light-transmitting layer (3) is 2-2.8 μm; A quantum dot light guide portion (4), wherein the quantum dot light guide portion (4) is arranged on the upper side of the spectrally selective light-transmitting layer (3); A light diffusion part (5), wherein the light diffusion part (5) is arranged on the upper side of the quantum dot light guiding part (4).

2. The selectively light-transmissive quantum dot diffusion film according to claim 1, characterized in that: The quantum dot light-guiding portion (4) comprises an A resin light-guiding layer (41), a quantum dot layer (42) and a B resin light-guiding layer (43); the A resin light-guiding layer (41) is arranged on the upper side of the spectrally selective light-transmitting layer (3); the B resin light-guiding layer (43) is arranged on the upper side of the A resin light-guiding layer (41); and the quantum dot layer (42) is arranged between the A resin light-guiding layer (41) and the B resin light-guiding layer (43).

3. The selectively light-transmissive quantum dot diffusion film according to claim 2, characterized in that: The light diffusion part (5) comprises a light diffusion layer (51) and a diffusion particle layer (52), wherein the light diffusion layer (51) is arranged on the upper side of the B resin light guide layer (43), and the diffusion particle layer (52) is arranged inside the light diffusion layer (51).

4. The selectively light-transmissive quantum dot diffusion film according to claim 3, characterized in that: A light-guiding heat-resistant layer (6) is provided on the upper side of the light diffusion layer (51).

5. The selectively light-transmissive quantum dot diffusion film according to claim 4, characterized in that: A pressure-resistant layer (7) is provided on the upper side of the light-guiding heat-resistant layer (6).

6. The selectively light-transmissive quantum dot diffusion film according to claim 5, characterized in that: An antistatic layer (8) is arranged on the upper side of the pressure-resistant layer (7).

7. The selectively light-transmissive quantum dot diffusion film according to claim 6, characterized in that: A wear-resistant layer (9) is provided on the upper side of the antistatic layer (8).

8. The selectively light-transmissive quantum dot diffusion film according to claim 1, characterized in that: A back adhesive layer (10) is arranged on the lower side of the PET base layer (1), and a release layer (11) is arranged on the lower side of the back adhesive layer (10).

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