Anti-dazzling display screen protection panel structure facilitating writing

Abstract

The invention relates to the field of display, and discloses an anti-dazzling and easy-to-write display screen protection panel structure which comprises a basic bearing layer. The light diffusion core layer is located on the basic bearing layer, and the light diffusion core layer comprises a large-spacing texture unit and a micro-nano texture unit; the surface of the light diffusion core layer is coated with the composite anti-reflection coating, the composite anti-reflection coating is a silicon dioxide and aluminum oxide composite coating, the molar ratio of silicon dioxide to aluminum oxide is 3: 2-4: 1, and the composite anti-reflection coating is used for reducing light reflectivity and enhancing durability. The anti-dazzling and easy-to-write display screen protection panel structure provided by the invention has a good anti-dazzling effect and a good writing effect, meanwhile, good impact resistance is provided, and the display screen can be effectively prevented from being damaged by external force such as collision and scraping in the daily use process; and the wear resistance, the weather resistance and the pollution resistance of the protection panel are improved.

Description

Technical Field

[0001] The invention relates to the field of display technology, and in particular to an anti-glare and easy-to-write display screen protection panel structure. Background Art

[0002] With the rapid development of science and technology, display screens have become a core component for people to obtain information and interact. However, in daily use, display screens face many problems. In strong light environments, such as direct sunlight outdoors or strong light indoors, the display screen surface will produce strong mirror reflections, forming dazzling light, which not only seriously interferes with the user's clear reading of screen content, but also easily causes visual fatigue, and long-term use may even damage eyesight. For example, when using mobile phone navigation outdoors, glare may cause unclear map display, affecting the accuracy and safety of navigation; for outdoor workers using tablets to record and view data, the glare problem also greatly reduces work efficiency.

[0003] On the other hand, with the increasing popularity of handwriting functions in electronic devices, people have higher requirements for the writing experience on the display screen. The surface of traditional display screens is too smooth, and the friction between the pen tip and the screen is too small when handwriting, so the handwriting is easy to slip, and the written lines are not precise enough, making it difficult to present the delicate effect of writing on paper. This is particularly obvious in scenarios that require fine writing operations, such as electronic signatures, painting creation, and note-taking. It cannot meet the user's pursuit of realism and comfort in writing, and limits the further expansion and application of electronic devices in the field of handwriting. Therefore, it is of great practical significance to develop an innovative display protection panel structure to overcome these problems. Summary of the invention

[0004] The object of the present invention is to provide a display screen protection panel structure which is anti-glare and easy to write on, aiming to solve the problems in the prior art.

[0005] The present application provides an anti-glare and easy-to-write display screen protection panel structure, comprising:

[0006] A base bearing layer, wherein the base bearing layer is made of optical grade polycarbonate (PC) material, has a thickness ranging from 0.8 to 1.5 mm, and a light transmittance of not less than 92%, and is used to provide physical support and ensure light transmittance;

[0007] A light diffusion core layer, the light diffusion core layer is located on the base bearing layer, the light diffusion core layer includes a large-pitch texture unit and a micro-nano texture unit; the large-pitch texture unit has crests and troughs arranged in sequence, the crest-to-trough spacing is 0.4-0.6 mm, the depth is 0.08-0.12 mm, and is manufactured by a precision mold injection molding process; the micro-nano texture unit is formed on the large-pitch texture unit, the crest-to-trough spacing of the micro-nano texture unit is 0.03-0.06 mm, the depth is 0.015-0.025 mm, and is manufactured by means of nano-lithography and etching technology;

[0008] A composite anti-reflective coating is coated on the surface of the light diffusion core layer and has a thickness of 80-120 nanometers. It is a composite coating of silica and alumina, and the molar ratio of silica to alumina is 3:2-4:1. It is deposited by atomic layer deposition technology and is used to reduce light reflectivity and enhance durability.

[0009] Furthermore, it also includes a writing touch optimization layer, which covers the light diffusion core layer and adopts a composite material of elastic rubber and high molecular polymer, with the elastic rubber accounting for 40%-60% by mass and the high molecular polymer accounting for 60%-40% by mass. The thickness is 0.15-0.25 mm, and the upper surface has a microscopic concave-convex structure, the protrusion height is 0.04-0.06 mm, the depression depth matches it, the spacing between adjacent protrusions or depressions is 0.3-0.4 mm, and a diamond-like film with a thickness of 15-25 nanometers is deposited on the surface. It is deposited by plasma enhanced chemical vapor deposition technology, with methane and hydrogen as reaction gases, CH4 and H2 flow ratio of 1:5-1:10, RF power of 100-200 watts, and air pressure of 0.5-1.5 Pa, which is used to improve writing experience, wear resistance and anti-fouling properties.

[0010] Furthermore, the surface texture of the mold cavity of the manufacturing mold for the large-pitch texture unit is processed by a five-axis linkage machining center with a processing accuracy of ±0.01 mm, and the mold temperature during injection molding is 190-210°C, the injection pressure is 90-110MPa, and the cooling rate is 15-25°C / minute.

[0011] Furthermore, when the micro-nano texture unit is produced, the photoresist coating thickness is 100-150 nanometers, a spin coating process is used, the spin coating speed is 2000-3000 rpm, exposure is performed using a deep ultraviolet (DUV) photolithography machine, the exposure dose is 300-500 microcoulombs / square centimeter, the development time is 30-60 seconds, the etching solution is a mixture of hydrofluoric acid, nitric acid and a buffer in a ratio of 1:3:2, the etching temperature is 25-30°C, the etching time is 40-60 seconds, and oxygen plasma cleaning is used after etching, the cleaning time is 5-10 minutes, and the power is 300-500 watts.

[0012] Furthermore, when the composite anti-reflective coating is deposited, the temperature in the reaction chamber is 100-150° C., the reaction gas flow rate is 50-100 ml / min, the pressure is 1-5 Torr, tetraethoxysilane and trimethylaluminum are used as precursors, the number of deposited layers is 50-80, and the thickness of each layer is about 1-2 nanometers.

[0013] Furthermore, the composite material of the writing touch optimization layer is mixed by an internal mixer, the mixing temperature is raised to 130°C and maintained for 15 minutes, the hot pressing molding temperature is 110°C, the pressure is 60 kPa, the holding time is 4 minutes, the micro-concave-convex structure is formed by embossing a specific texture mold, and the bonding pressure with the light diffusion core layer is 30-50 kPa in a dust-free environment.

[0014] Compared with the prior art, the present invention constructs a set of efficient light diffusion and reflection suppression systems through the synergistic effect of the unique double texture structure in the light diffusion core layer and the anti-reflection coating. The large-pitch texture unit adjusts the direction and initially disperses the light at a macroscopic level, the micro-nano texture unit scatters and homogenizes the light at a microscopic level, and the composite anti-reflection coating further reduces the reflectivity of the light on the surface of the protective panel. This three-in-one anti-glare design enables the display screen to effectively avoid the generation of glare in strong direct light, multi-angle illumination and complex lighting environments, providing users with a clear, soft and comfortable visual experience. For example, in an outdoor environment with strong sunlight, when using a tablet computer equipped with the protective panel of the present invention for reading or working, the screen content is still clearly discernible, without obvious glare interference, greatly improving the convenience and comfort of outdoor use; in indoor environments with complex lighting, such as conference rooms, exhibition halls and other places, it can also significantly reduce the impact of light reflection on the visual effect of the display screen, allowing users to focus on the acquisition and interaction of screen information, effectively reducing the generation of visual fatigue, protecting the user's vision health, and providing reliable visual protection for users who use the display screen for a long time. The careful design of the writing touch optimization layer brings users an unprecedented sense of writing reality. Its unique elastic rubber and high molecular polymer composite material and the micro-convex and concave structure that imitates the texture of paper can accurately simulate the friction and damping characteristics of paper, allowing users to feel the delicate touch of writing on electronic devices just like writing on traditional paper. Whether it is the beginning, turning or ending of writing, you can get natural and smooth feedback, the thickness of the handwriting is more varied, and the written lines are more accurate and stable. This is very attractive to users who need to input handwriting frequently, such as designers, artists, students and business people. For example, when using an electronic drawing board to create paintings, painters can use this realistic writing experience to give full play to their creativity more freely and delicately depict various lines and color transitions; in the electronic signature scenario, users can easily sign handwriting that is very similar to paper signatures, which improves the credibility and recognizability of electronic signatures; in classroom notes or meeting records, students and business people can record information more quickly and accurately, improving the efficiency of work and study. The entire display screen protection panel structure uses high-quality materials and advanced manufacturing processes, which not only excels in anti-glare and writing experience, but also has significant advantages in other performance indicators. The high-strength polycarbonate material of the base bearing layer provides the protection panel with good impact resistance, which can effectively prevent the display screen from being damaged by external forces such as collisions and scratches during daily use; the anti-reflective coating of the light diffusion core layer and the diamond-like film of the writing touch optimization layer jointly improve the wear resistance, weather resistance and anti-fouling of the protection panel, making it able to adapt to various complex usage environments and conditions.For example, in a high temperature and high humidity environment, the protective panel will not degrade due to moisture erosion or temperature changes; in the long-term use of handwriting, the writing surface will not be scratched or the handwriting will not be blurred due to the wear of the pen tip; even after being stained or fingerprinted, the surface can be restored to a clean and tidy state by simply wiping it. This excellent comprehensive performance and durability ensures that the display protection panel always maintains stable and reliable performance during long-term use, effectively extending the service life of the display, reducing the user's use cost and maintenance frequency, and providing a strong guarantee for the long-term stable operation of electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a texture of a large-pitch texture unit provided by an embodiment of the present invention;

[0016] Figure 2 is a schematic diagram of a texture of a large-pitch texture unit provided by another embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of a texture of a large-pitch texture unit provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] Reference Figure 1-3 , an anti-glare and easy-to-write display screen protection panel structure, comprising:

[0025] A base bearing layer, wherein the base bearing layer is made of optical grade polycarbonate (PC) material, has a thickness ranging from 0.8 to 1.5 mm, and a light transmittance of not less than 92%, and is used to provide physical support and ensure light transmittance;

[0026] A light diffusion core layer, the light diffusion core layer is located on the base bearing layer, the light diffusion core layer includes a large-pitch texture unit and a micro-nano texture unit; the large-pitch texture unit has crests and troughs arranged in sequence, the crest-to-trough spacing is 0.4-0.6 mm, the depth is 0.08-0.12 mm, and is manufactured by a precision mold injection molding process; the micro-nano texture unit is formed on the large-pitch texture unit, the crest-to-trough spacing of the micro-nano texture unit is 0.03-0.06 mm, the depth is 0.015-0.025 mm, and is manufactured by means of nano-lithography and etching technology;

[0027] A composite anti-reflective coating is coated on the surface of the light diffusion core layer and has a thickness of 80-120 nanometers. It is a composite coating of silica and alumina, and the molar ratio of silica to alumina is 3:2-4:1. It is deposited by atomic layer deposition technology and is used to reduce light reflectivity and enhance durability.

[0028] Furthermore, it also includes a writing touch optimization layer, which covers the light diffusion core layer and adopts a composite material of elastic rubber and high molecular polymer, with the elastic rubber accounting for 40%-60% by mass and the high molecular polymer accounting for 60%-40% by mass. The thickness is 0.15-0.25 mm, and the upper surface has a microscopic concave-convex structure, the protrusion height is 0.04-0.06 mm, the depression depth matches it, the spacing between adjacent protrusions or depressions is 0.3-0.4 mm, and a diamond-like film with a thickness of 15-25 nanometers is deposited on the surface. It is deposited by plasma enhanced chemical vapor deposition technology, with methane and hydrogen as reaction gases, CH4 and H2 flow ratio of 1:5-1:10, RF power of 100-200 watts, and air pressure of 0.5-1.5 Pa, which is used to improve writing experience, wear resistance and anti-fouling properties.

[0029] It should be noted that the Figure 1-3 This is a schematic diagram of the texture of a large-pitch texture unit; the three types of textures shown are for reference only and are not used to limit the scope of protection of this application.

[0030] Furthermore, the surface texture of the mold cavity of the manufacturing mold for the large-pitch texture unit is processed by a five-axis linkage machining center with a processing accuracy of ±0.01 mm, and the mold temperature during injection molding is 190-210°C, the injection pressure is 90-110MPa, and the cooling rate is 15-25°C / minute.

[0031] Furthermore, when the micro-nano texture unit is produced, the photoresist coating thickness is 100-150 nanometers, a spin coating process is used, the spin coating speed is 2000-3000 rpm, exposure is performed using a deep ultraviolet (DUV) photolithography machine, the exposure dose is 300-500 microcoulombs / square centimeter, the development time is 30-60 seconds, the etching solution is a mixture of hydrofluoric acid, nitric acid and a buffer in a ratio of 1:3:2, the etching temperature is 25-30°C, the etching time is 40-60 seconds, and oxygen plasma cleaning is used after etching, the cleaning time is 5-10 minutes, and the power is 300-500 watts.

[0032] Furthermore, when the composite anti-reflective coating is deposited, the temperature in the reaction chamber is 100-150°C, the reaction gas flow rate is 50-100 ml / min, the pressure is 1-5 Torr, tetraethoxysilane (TEOS) and trimethylaluminum (TMA) are used as precursors, the number of deposited layers is 50-80 layers, and the thickness of each layer is about 1-2 nanometers.

[0033] Furthermore, the composite material of the writing touch optimization layer is mixed by an internal mixer, the mixing temperature is raised to 130°C and maintained for 15 minutes, the hot pressing molding temperature is 110°C, the pressure is 60 kPa, the holding time is 4 minutes, the micro-concave-convex structure is formed by embossing a specific texture mold, and the bonding pressure with the light diffusion core layer is 30-50 kPa in a dust-free environment.

[0034] Specifically, the manufacturing process of the anti-glare and easy-to-write display screen protection panel structure of the present application is as follows:

[0035] 1. Preparation of the base bearing layer: First, select an optical grade polycarbonate (PC) sheet of appropriate specifications according to the precise size and shape specifications of the display screen. Use high-precision laser cutting equipment to cut the sheet according to the preset cutting path, and control the cutting accuracy within ±0.1 mm to obtain a preliminary base bearing layer embryo. Subsequently, place the embryo on the workbench of the CNC machining center, and use precision milling and grinding tools to finely process its edges to remove burrs and uneven parts generated during the cutting process. At the same time, the surface flatness is controlled within ±0.02 mm to ensure that the thickness tolerance of the base bearing layer meets the design requirements, and finally obtain a base bearing layer component with uniform thickness, smooth edges and flat surface.

[0036] 2. Production of light diffusion core layer:

[0037] Large-pitch texture unit molding: According to the design requirements of large-pitch texture units, high-precision injection molds are carefully designed and manufactured. The texture pattern on the surface of the mold cavity is processed by an advanced five-axis linkage machining center with a machining accuracy of ±0.01 mm, ensuring the accuracy of the shape, size and spacing of the texture. The pre-treated base bearing layer components are placed in the injection mold, and transparent optical grade polyurethane (PU) resin is used as the injection material. During the injection molding process, the various parameters of the injection molding machine are strictly controlled, the mold temperature is set at 200°C, the injection pressure is stabilized at 100MPa, the injection speed is controlled between 50-80 mm / s, the holding time is 5-10 seconds, and the cooling time is 20-30 seconds, so that the polyurethane resin is fully filled and cured in the mold, forming a regular and uniform large-pitch texture unit on the surface of the base bearing layer. After the injection molding is completed, the molded parts are demolded, and the appearance inspection and size measurement are carried out to eliminate defective products to ensure that the quality of the large-pitch texture unit meets the requirements.

[0038] Micro-nano texture unit etching: Based on the large-pitch texture unit molding, the micro-nano texture unit is produced. First, a layer of positive photoresist with a thickness of 120 nanometers is evenly coated on the surface of the large-pitch texture unit using a spin coating process. The spin coating speed is controlled between 2000-3000 rpm to ensure the thickness uniformity and flatness of the photoresist layer. Then, the photoresist-coated sample is placed on a high-precision lithography machine workbench, and a deep ultraviolet (DUV) lithography machine is used to expose the photoresist according to the preset micro-nano texture pattern. The exposure dose is set to 400 microcoulombs / square centimeter. After the exposure is completed, the sample is quickly transferred to the developer for development. The development time is controlled between 30-60 seconds to remove the unexposed photoresist, thereby forming a mask consistent with the micro-nano texture pattern on the photoresist layer. Next, the sample is placed in an etching solution mixed with hydrofluoric acid, nitric acid and buffer in a ratio of 1:3:2. The temperature of the etching solution is maintained at 28°C and the etching time is controlled at 50 seconds, so that the large-pitch texture unit material not protected by the photoresist is selectively etched away, thereby forming a micro-nano texture unit on its surface. After the etching is completed, the sample is cleaned using oxygen plasma cleaning technology to remove the residual photoresist and etching byproducts. The cleaning time is 5-10 minutes and the power is 300-500 watts to ensure the cleanliness and flatness of the surface of the micro-nano texture unit. Finally, the sample with the micro-nano texture unit is placed in the reaction chamber of the atomic layer deposition equipment to deposit a composite anti-reflective coating of silicon dioxide and aluminum oxide. The temperature in the reaction chamber is set at 120°C, the flow rate of the reaction gas is controlled at 80 ml / min, and the pressure is maintained between 3 Torr. Using tetraethoxysilane and trimethylaluminum as precursors, silicon dioxide and aluminum oxide are deposited layer by layer on the surface of the micro-nano texture unit by alternating pulses. The number of deposited layers is 50-80, and the deposition thickness of each layer is about 1-2 nanometers. Finally, a composite anti-reflective coating with a thickness of 100 nanometers is formed, which effectively improves the anti-glare performance and durability of the light diffusion core layer.

[0039] 3. Writing touch optimization layer processing:

[0040] Elastic rubber (such as nitrile rubber) and high molecular polymer (such as polymethyl methacrylate) are mixed in an internal mixer at a mass ratio of 50:50. During the mixing process, the temperature of the internal mixer gradually rises to 130°C and is maintained at this temperature for 15 minutes to ensure that the two materials are fully mixed and evenly mixed to form a composite material with good elasticity and plasticity. Then, the mixed composite material is pressed into a sheet with a thickness of 0.2 mm by a hot pressing process. During the hot pressing process, the hot pressing temperature is set to 110°C, the pressure is 60kPa, and the holding time is 4 minutes, so that the composite material is fully formed in the mold. Then, the sheet is embossed with a mold with a specific texture, so that the upper surface of the sheet forms a microscopic concave-convex structure that imitates the texture of traditional paper. The height of the protrusion is precisely set between 0.04-0.06 mm, the depth of the depression matches it, and the spacing between adjacent protrusions or depressions is evenly distributed between 0.3-0.4 mm. Afterwards, the writing touch optimization layer with a micro-concave-convex structure is bonded to the prepared light diffusion core layer through optical glue. The bonding process is carried out in a dust-free environment, and the bonding pressure is controlled between 30-50kPa to ensure that the two layers are tightly bonded without bubbles and gaps. Finally, the bonded overall structure is bonded and assembled with the display screen through high-precision bonding equipment, so that the display screen protection panel structure is completely covered on the display screen surface. During the assembly process, the bonding accuracy is monitored and adjusted in real time to ensure that the relative position deviation between the protection panel and the display screen is controlled within ±0.05 mm, ensuring that the display effect is not affected and the handwriting function is used normally.

[0041] The present invention constructs a set of efficient light diffusion and reflection suppression systems through the synergistic effect of the unique double texture structure in the light diffusion core layer and the anti-reflection coating. The large-pitch texture unit adjusts the direction and initially disperses the light at a macroscopic level, the micro-nano texture unit scatters and homogenizes the light at a microscopic level, and the composite anti-reflection coating further reduces the reflectivity of the light on the surface of the protective panel. This three-in-one anti-glare design enables the display screen to effectively avoid the generation of glare in strong direct light, multi-angle illumination and complex lighting environments, providing users with a clear, soft and comfortable visual experience. For example, in an outdoor environment with strong sunlight, when using a tablet computer equipped with the protective panel of the present invention for reading or working, the screen content is still clearly discernible, without obvious glare interference, greatly improving the convenience and comfort of outdoor use; in indoor environments with complex lighting, such as conference rooms, exhibition halls and other places, it can also significantly reduce the impact of light reflection on the visual effect of the display screen, allowing users to focus on the acquisition and interaction of screen information, effectively reducing the generation of visual fatigue, protecting the user's eyesight health, and providing reliable visual protection for users who use the display screen for a long time. The careful design of the writing touch optimization layer brings users an unprecedented sense of writing reality. Its unique elastic rubber and high molecular polymer composite material and the micro-convex and concave structure that imitates the texture of paper can accurately simulate the friction and damping characteristics of paper, allowing users to feel the delicate touch of writing on electronic devices just like writing on traditional paper. Whether it is the beginning, turning or ending of writing, you can get natural and smooth feedback, the thickness of the handwriting is more varied, and the written lines are more accurate and stable. This is very attractive to users who need to input handwriting frequently, such as designers, artists, students and business people. For example, when using an electronic drawing board to create paintings, painters can use this realistic writing experience to give full play to their creativity more freely and delicately depict various lines and color transitions; in the electronic signature scenario, users can easily sign handwriting that is very similar to paper signatures, which improves the credibility and recognizability of electronic signatures; in classroom notes or meeting records, students and business people can record information more quickly and accurately, improving the efficiency of work and study. The entire display screen protection panel structure uses high-quality materials and advanced manufacturing processes, which not only excels in anti-glare and writing experience, but also has significant advantages in other performance indicators. The high-strength polycarbonate material of the base bearing layer provides the protection panel with good impact resistance, which can effectively prevent the display screen from being damaged by external forces such as collisions and scratches during daily use; the anti-reflective coating of the light diffusion core layer and the diamond-like film of the writing touch optimization layer jointly improve the wear resistance, weather resistance and anti-fouling of the protection panel, making it able to adapt to various complex usage environments and conditions.For example, in a high temperature and high humidity environment, the protective panel will not degrade due to moisture erosion or temperature changes; in the long-term use of handwriting, the writing surface will not be scratched or the handwriting will not be blurred due to the wear of the pen tip; even after being stained or fingerprinted, the surface can be restored to a clean and tidy state by simply wiping it. This excellent comprehensive performance and durability ensures that the display protection panel always maintains stable and reliable performance during long-term use, effectively extending the service life of the display, reducing the user's use cost and maintenance frequency, and providing a strong guarantee for the long-term stable operation of electronic equipment.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An anti-glare and easy-to-write display screen protection panel structure, characterized in that: include: A base bearing layer, wherein the base bearing layer is made of optical grade polycarbonate (PC) material, has a thickness ranging from 0.8 to 1.5 mm, and a light transmittance of not less than 92%, and is used to provide physical support and ensure light transmittance; A light diffusion core layer, the light diffusion core layer is located on the base bearing layer, the light diffusion core layer includes a large-pitch texture unit and a micro-nano texture unit; the large-pitch texture unit has crests and troughs arranged in sequence, the crest-to-trough spacing is 0.4-0.6 mm, the depth is 0.08-0.12 mm, and is manufactured by a precision mold injection molding process; the micro-nano texture unit is formed on the large-pitch texture unit, the crest-to-trough spacing of the micro-nano texture unit is 0.03-0.06 mm, the depth is 0.015-0.025 mm, and is manufactured by means of nano-lithography and etching technology; A composite anti-reflective coating is coated on the surface of the light diffusion core layer and has a thickness of 80-120 nanometers. It is a composite coating of silica and alumina, and the molar ratio of silica to alumina is 3:2-4:

1. It is deposited by atomic layer deposition technology and is used to reduce light reflectivity and enhance durability.

2. The anti-glare and easy-to-write display screen protection panel structure according to claim 1, characterized in that: It also includes a writing touch optimization layer, which covers the light diffusion core layer and adopts a composite material of elastic rubber and high molecular polymer, with the elastic rubber accounting for 40%-60% by mass and the high molecular polymer accounting for 60%-40% by mass. The thickness is 0.15-0.25 mm, and the upper surface has a microscopic concave-convex structure, the protrusion height is 0.04-0.06 mm, the depression depth matches it, the spacing between adjacent protrusions or depressions is 0.3-0.4 mm, and a diamond-like film with a thickness of 15-25 nanometers is deposited on the surface. It is deposited by plasma enhanced chemical vapor deposition technology, with methane and hydrogen as reaction gases, CH4 and H2 flow ratio of 1:5-1:10, radio frequency power of 100-200 watts, and air pressure of 0.5-1.5 Pa, which is used to improve writing experience, wear resistance and anti-fouling properties.

3. The anti-glare and easy-to-write display screen protection panel structure according to claim 2, characterized in that: The surface texture of the mold cavity of the manufacturing mold for the large-pitch texture unit is processed by a five-axis linkage machining center with a machining accuracy of ±0.01 mm. During injection molding, the mold temperature is 190-210°C, the injection pressure is 90-110MPa, and the cooling rate is 15-25°C / minute.

4. The anti-glare and easy-to-write display screen protection panel structure according to claim 3, characterized in that: When the micro-nano texture unit is produced, the photoresist coating thickness is 100-150 nanometers, a spin coating process is adopted, the spin coating speed is 2000-3000 rpm, a deep ultraviolet (DUV) photolithography machine is used for exposure, the exposure dose is 300-500 microcoulombs / square centimeter, the development time is 30-60 seconds, the etching solution is a mixture of hydrofluoric acid (HF), nitric acid (HNO3) and a buffer in a ratio of 1:3:2, the etching temperature is 25-30°C, the etching time is 40-60 seconds, and oxygen plasma cleaning is used after etching, the cleaning time is 5-10 minutes, and the power is 300-500 watts.

5. The anti-glare and easy-to-write display screen protection panel structure according to claim 4, characterized in that: When the composite anti-reflection coating is deposited, the temperature in the reaction chamber is 100-150° C., the reaction gas flow rate is 50-100 ml / min, the pressure is 1-5 Torr, tetraethoxysilane (TEOS) and trimethylaluminum (TMA) are used as precursors, the number of deposited layers is 50-80, and the thickness of each layer is about 1-2 nanometers.

6. The anti-glare and easy-to-write display screen protection panel structure according to claim 5, characterized in that: The composite material of the writing touch optimization layer is mixed in an internal mixer, the mixing temperature is raised to 130°C and maintained for 15 minutes, the hot pressing molding temperature is 110°C, the pressure is 60kPa, the holding time is 4 minutes, the micro-concave-convex structure is formed by embossing a specific texture mold, and the bonding pressure with the light diffusion core layer is 30-50kPa in a dust-free environment.

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