Double-layer high-reflection microstructure nanocrystal display film

Abstract

The utility model relates to the technical field of display, in particular to a double-layer high-reflection microstructure nanocrystal display film, which is characterized by comprising the following structures: a substrate layer; and the first nanocrystal microstructure layer is arranged on the substrate layer and consists of a series of tiny bulges or recesses so as to maximally scatter the incident light and improve the reflection efficiency. The rare earth material layer is arranged on the first nanocrystal microstructure layer and is made of europium oxide or gadolinium nitrate rare earth materials; the second nanocrystal microstructure layer is arranged on the rare earth material layer; and the protective layer is made of a wear-resistant and scratch-resistant transparent material. The structural design of the display film adopted by the utility model is combined with two materials with different refractive indexes, namely silicon dioxide and silicate, and due to the design of the two nanocrystal microstructure layers, the display film can effectively refract and reflect light rays, so that brighter and clearer images are realized.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a film structure related to a display device. Background Art

[0002] The continuous advancement of modern display technology requires display films to have higher optical performance to meet consumers' growing demand for clarity, brightness and contrast. Traditional display films, although able to provide basic display functions, often have limitations in terms of high brightness, high contrast and wide viewing angle.

[0003] However, a single nanocrystal layer may not be sufficient to provide all the optical properties required in some applications. For example, to achieve higher brightness and contrast, or to give the display film a wider viewing angle and more uniform brightness distribution, a combination of different nanostructures and materials is required. Utility Model Content

[0004] The utility model aims to provide a double-layer high-reflection microstructure nanocrystal display film, which aims to achieve higher brightness, contrast and a wide viewing angle by combining two different nanocrystal microstructure layers and a specific rare earth material layer.

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

[0006] A double-layer high-reflection microstructure nanocrystal display film, the structure of which is as follows: Base layer: made of transparent polymer material, such as PET or PC, with a thickness of 45-85 μm. This layer serves as the support structure of the entire display film.

[0007] The first nanocrystal microstructure layer: adjacent to the base layer, it is composed of a series of tiny protrusions or depressions to maximize the scattering of incident light and improve reflection efficiency.

[0008] Rare earth material layer: arranged on the first nanocrystalline microstructure layer. Using europium oxide or gadolinium nitrate rare earth material. This layer can further enhance the brightness and contrast of the display film, especially under low light conditions. The thickness of the rare earth material layer is 25-50 nanometers.

[0009] Second nanocrystal microstructure layer: arranged on the rare earth material layer. Similar to the first nanocrystal microstructure layer, but with different sizes, shapes or arrangements of microstructures to meet different optical requirements.

[0010] Protective layer: Made of wear-resistant and scratch-resistant transparent material, such as hardened polyurethane or silicone, covering the second nanocrystalline microstructure layer to protect the entire structure from the external environment. The thickness of the protective layer is 2-5μm.

[0011] Further, the first nanocrystalline microstructure layer: mainly composed of cylindrical microstructures, which are evenly distributed throughout the layer. The diameter of the microstructure ranges from 50 to 70 nanometers and the height is about 100 to 120 nanometers. The spacing between the microstructures is designed to be relatively large, about 150 to 200 nanometers, which helps to maximize the scattering of incident light and enhance the display effect. The material is silicon dioxide (SiO2). The main function of this layer is to evenly scatter the incident light to reduce the unevenness of brightness and improve the display effect. In addition, it also helps to improve the brightness and contrast of the display device.

[0012] Furthermore, the second nanocrystal microstructure layer is different from the first nanocrystal microstructure layer. The microstructures of this layer are conical, with a base diameter of 30-50 nanometers, a top diameter of about 10-20 nanometers, and a height of 80-100 nanometers. The spacing is designed to be denser, 60-80 nanometers, to accommodate specific optical effects or enhance certain optical properties. Different materials from the first layer, silicates or other materials with different refractive indices are used to achieve different optical effects. The main function of this layer is to further optimize the light scattered from the first layer and improve the clarity and brightness of the image. Its unique microstructure design helps to enhance the contrast and color saturation of the display, while also providing a wider viewing angle for the display. The material is silicate.

[0013] The display film structure design adopted by the utility model combines silicon dioxide and silicate, two materials with different refractive indices. Due to the design of the two nanocrystalline microstructure layers, the display film can effectively refract and reflect light, thereby achieving brighter and clearer images. In particular, the high refractive index of the silicate material ensures higher brightness and contrast. Due to the microstructure design of the nanocrystals, the display film can provide a wide range of viewing angles, ensuring consistent image quality when viewed from different angles. The combination of the two nanocrystalline microstructure layers ensures that the display film can maintain a stable display effect under various lighting conditions, whether in strong light or in low light environments. At the same time, the display film has good mechanical and chemical stability, thereby enhancing its durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of a double-layer high-reflection microstructure nanocrystal display film structure. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further explained below in conjunction with the accompanying drawings.

[0016] A double-layer high-reflection microstructure nanocrystal display film has the following structural components: a base layer 8 is made of a transparent polymer material, such as PET or PC, with a thickness of 45-85 μm. This layer serves as a supporting structure for the entire display film.

[0017] The first nanocrystal microstructure layer 9 is adjacent to the base layer 8 and is composed of a series of tiny protrusions or depressions to maximize the scattering of incident light and improve reflection efficiency.

[0018] Rare earth material layer 10: arranged on the first nanocrystalline microstructure layer 9. Using europium oxide or gadolinium nitrate rare earth material. This layer can further enhance the brightness and contrast of the display film, especially under low light conditions.

[0019] The second nanocrystal microstructure layer 11 is arranged on the rare earth material layer 10. It is similar to the first nanocrystal microstructure layer 9, but the size, shape or arrangement of the microstructure is different to meet different optical requirements.

[0020] The protective layer 12 is made of a wear-resistant and scratch-resistant transparent material, such as hardened polyurethane or silicone, and covers the second nanocrystal microstructure layer 11 to protect the entire structure from the influence of the external environment.

[0021] The specific production method is as follows: PET or PC is used as raw material, and a transparent base layer is manufactured by a casting method or an extrusion method. The thickness of the base layer is controlled to be 45-85μm. In order to increase the adhesion between the upper layer and the base layer, the base layer is placed in ultraviolet light or an electron beam for pretreatment for about 15-30 minutes. Preparation of the first nanocrystalline microstructure layer: Silicon tetrachloride (SiCl4) or tetraethyl orthosilicate (TEOS) is selected as a precursor of silicon dioxide (SiO2). The precursor is dissolved in methanol or ethanol, and a small amount of acid or base is added as a catalyst for hydrolysis and polycondensation reaction. The reaction time is 2-4 hours to form SiO2 sol. Using the nanoimprint method: First, the prepared SiO2 sol is coated on the base layer. Then, the coated sol is imprinted using a pre-prepared nano template (on which the desired microstructure pattern is present) to ensure good contact between the template and the sol. During the imprinting process, the pressure and temperature are controlled to ensure that the nanostructure is formed in the SiO2 sol. Remove the template and transfer the microstructure to the base layer. Heat treatment is performed at 500-600°C for about 2 hours to solidify the SiO2 sol and obtain the first nanocrystalline microstructure layer. The prepared SiO2 sol is uniformly coated on the substrate layer by an immersion method, and the coating speed is ensured to be constant during the coating process to avoid the generation of bubbles. Heat treatment is performed at 100-120°C for about 2 hours to convert the sol into a solid silicon dioxide microstructure layer. Preparation of rare earth material layer: europium oxide or gadolinium nitrate is used as a rare earth raw material, mixed with an appropriate amount of organic solvent such as alcohol, and stirred evenly. Spin coating is used to coat the rare earth solution on the first nanocrystalline microstructure layer, controlling the coating speed and ensuring that there are no bubbles. Heat treatment is performed at 200-250°C for about 1 hour to solidify the rare earth material layer. Preparation of the second nanocrystalline microstructure layer: silicate is used as a raw material and mixed with an appropriate amount of organic solvent. The preparation process is similar to that of the first nanocrystalline layer, but the template or nanoimprinting parameters need to be adjusted to produce the desired microstructure shape and size. A second nanocrystal microstructure layer is formed on the rare earth material layer using a nano template or nanoimprint method. Preparation of protective layer: Select hardened polyurethane or siloxane as the material and mix it with an appropriate amount of solvent to form a solution. Coat the protective material on the second nanocrystal microstructure layer by spraying. Perform UV curing at room temperature for about 30 minutes, or perform heat treatment curing at 60-80°C for about 1 hour. Use a precision cutting machine to cut the display film to the required size.

[0022] In summary, the technical solution provided by the utility model not only combines the excellent optical properties of nanocrystals and the high brightness and high contrast characteristics of rare earth materials, but also achieves a wider viewing angle and higher reflection efficiency through the design of a double-layer microstructure. In addition, the preparation process of this display film is relatively simple and easy to mass produce.

Claims

1. A double-layer high-reflection microstructure nanocrystal display film, characterized in that The invention comprises the following structures: a substrate layer; a first nanocrystal microstructure layer: arranged on the substrate layer, and composed of a series of tiny protrusions or depressions, so as to maximize the scattering of incident light and improve the reflection efficiency; Rare earth material layer: arranged on the first nanocrystalline microstructure layer, using europium oxide or gadolinium nitrate rare earth material; Second nanocrystal microstructure layer: arranged on the rare earth material layer; Protective layer: Made of wear-resistant and scratch-resistant transparent material.

2. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 1, characterized in that: The first nanocrystalline microstructure layer is composed of cylindrical microstructures, which are evenly distributed throughout the layer.

3. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 2, characterized in that: The diameter of the cylindrical microstructure is in the range of 50-70 nanometers, the height is in the range of 100-120 nanometers, and the spacing between the microstructures is in the range of 150-200 nanometers.

4. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 1, characterized in that: The second nanocrystal microstructure layer is different from the first nanocrystal microstructure layer in that the microstructure of this layer is conical.

5. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 4, characterized in that: The conical microstructures have a base diameter of 30-50 nanometers, a top diameter of about 10-20 nanometers, a height of 80-100 nanometers, and a more dense spacing of 60-80 nanometers.

6. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 4, characterized in that: The thickness of the basal layer is 45-85 μm.

7. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 4, characterized in that: The thickness of the protective layer is 2-5 μm.

8. A double-layer high-reflection microstructure nanocrystal display film as claimed in claim 4, characterized in that: The rare earth material layer has a thickness of 25-50 nanometers.

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