Nano anti-aging brightening light guide plate surface composite modification method

Abstract

The invention discloses a nanometer anti-aging brightening light guide plate surface composite modification method, and relates to the technical field of light guide plate surface composite modification, and the method comprises the following steps: constructing a biological bionic substrate regulation charge array; the nanoparticles are dynamically compounded, and arrangement of the nanoparticles is guided through charge-form cooperation; physical field synergistic curing for strengthening interface bonding is implemented; according to the invention, the regular charge array is constructed through gene editing, and the arrangement of the nanoparticles is guided in combination with electrostatic complementation, so that the charge order degree is improved, bright spots and dark areas are eliminated, and the light transmission performance is improved; the crater-shaped particles are prepared by using the shape memory polymer, a geometric lock catch is formed by matching with pulse pressure, exposure of the anti-ultraviolet particles is increased, and the performance retention rate after aging reaches the industry leading level in combination with multi-layer protection; a multi-field cooperation mechanism is constructed, and time sequence control and in-situ correction enable the thickness error of the thin film to be reduced, the performance fluctuation to be reduced and the yield to be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surface composite modification of light guide plates, in particular to a surface composite modification method of a nanometer anti-aging and brightening light guide plate. Background Art

[0002] Nano-anti-aging and brightening light guide plates (LGPs), core components in modern display and lighting, have long been a hot topic in the industry for surface composite modification. Existing technologies primarily focus on improving the optical uniformity, brightness enhancement efficiency, and aging resistance of LGPs by optimizing nanoparticle formulations, refining coating processes, and regulating coating curing conditions. For example, the addition of UV-resistant nanoparticles enhances material weatherability, while precision coating techniques improve nanoparticle dispersion to achieve stable light transmission. However, current technologies have significant flaws. During surface composite modification processes, the phenomenon of electrostatic adsorption, caused by friction and contact between equipment and materials, has long been overlooked. Existing process parameter settings and optimizations are often based on the idealized assumption of uniform nanoparticle dispersion, without considering the interference of electrostatic effects on the spatial distribution of nanoparticles. In actual production, the intensity and direction of electrostatic adsorption are affected by multiple factors, including material properties, ambient humidity, and operating procedures, making it difficult to precisely control. This neglect has brought about multi-dimensional negative impacts. In terms of optical performance, electrostatic adsorption leads to uneven distribution of nanoparticles, disrupting the transmission pattern of light in the light guide plate. Light scattering is weakened in sparse areas of nanoparticles to form bright spots, while light scattering is enhanced in dense areas to produce dark areas, which seriously affects the uniformity of the display image and weakens the brightening effect. It cannot meet the strict requirements of liquid crystal displays, lighting fixtures, etc. for light output quality. In terms of anti-aging performance, the agglomeration and local aggregation of nanoparticles cause weak protection areas in the modified layer, providing channels for environmental factors such as oxygen and moisture to invade the light guide plate matrix, accelerating the oxidation and hydrolysis reactions of the material, reducing mechanical strength and optical properties, and shortening the product life. In addition, the randomness of electrostatic adsorption makes the spatial distribution of nanoparticles unpredictable, resulting in quality fluctuations in the same batch of products, a decrease in yield rate, and a significant increase in the cost and difficulty of quality control in the production process. It can be seen that the existing nano-anti-aging and brightening light guide plate surface composite modification technology is difficult to achieve stable and efficient product performance because it does not solve the problems caused by electrostatic adsorption. In view of this, a nano-anti-aging and brightening light guide plate surface composite modification method is provided to overcome the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a surface composite modification method for a nanometer anti-aging and brightening light guide plate to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides a surface composite modification method for a nanometer anti-aging and brightening light guide plate, comprising the following steps: Construct biomimetic substrate-regulated charge arrays; Dynamic recombination of nanoparticles, guiding the arrangement of nanoparticles through charge-morphology synergy; Implement physical field synergistic curing for strengthening interface bonding.

[0005] Furthermore, constructing a biomimetic substrate-regulated charge array includes: CRISPR-Cas9 gene editing was used to modify the spider silk protein gene, inserting coding sequences containing lysine and aspartic acid. The insertion sites were regulated to be spaced every 15-20 amino acid residues, and the charge array period was controlled to 3-5nm to balance electrostatic forces and van der Waals forces. During the static process at 4°C, a pulsed electric field with a field strength of 50-100 V / m and a frequency of 1-2 Hz was superimposed to control the angle between the charge array and the normal direction of the light guide surface in the range of 15°-30°; 0.1-0.3 g / L of nano-silica was added to the solution as an assembly anchor to form a uniform film with a thickness error of ≤±10 nm.

[0006] Furthermore, the charge distribution was monitored in real time by in situ scanning with an atomic force microscope combined with a scanning Kelvin probe. When the local charge density deviation exceeded 5%, the charge density was corrected by using ultraviolet light to induce isomerization of the silk protein side chain functional groups.

[0007] Furthermore, the dynamic compounding of nanoparticles includes: The shape memory of nanoparticles was modified by introducing quaternary ammonium salt-modified graphene quantum dots to make the nanoparticle surface positively charged, forming an electrostatic match with the negative charge array of the biomimetic film, and using microfluidics technology to construct a crater-like structure; The acoustic levitation frequency is controlled in stages. In the initial stage, high-frequency sound waves of 20-30kHz are used to break up aggregates, and then low-frequency sound waves of 30-50kHz are switched to maintain the suspension of individual particles. The suspension height is controlled at 5-10mm above the light guide plate. An alternating electric field in a pulse-gradient composite mode was applied, with a low-frequency pulsed electric field of 100-200 V / m applied for the first 10 minutes, and the field intensity was linearly increased to 200-300 V / m and the frequency was increased to 10 Hz for the next 10 minutes to compress the interparticle distance to 10-20 nm.

[0008] Furthermore, the temperature-pressure synergistic bonding is specifically: The nanoparticles were initially flattened by using step-by-step temperature control, rising from room temperature to 40°C. After keeping the temperature for 5 minutes, the temperature was raised to 50°C at a rate of 1°C / min. At the same time, pulsed inert gas pressure was applied, first pre-pressing at 0.1MPa for 1 minute, then suddenly increasing to 0.3MPa and maintaining for 3 minutes.

[0009] Furthermore, physical field collaborative solidification includes: 0.5-1wt% Fe3O4@SiO2 core-shell magnetic particles are doped into the nanoparticles, and nanoscale magnetic chains are formed under the action of a strong magnetic field of 1-3T. Ultrasonic waves in frequency hopping mode are used to excite resonance at 40-60kHz and then switch to 60-80kHz to promote the diffusion of molecular chains. The low-temperature plasma treatment was performed using a helium-oxygen-methane mixed gas, and the radio frequency power was pulse-modulated at a power of 50-100 W with an interruption of 1 second every 10 seconds.

[0010] Furthermore, the nanoparticles are shape memory polymer particles doped with anti-aging nanoparticles, and the crater-shaped protrusions thereof form a geometric locking structure with the charge array grooves.

[0011] Furthermore, during the low-temperature plasma treatment, carbon free radicals generated by the decomposition of methane react with hydroxyl groups on the surface of the light guide plate to form a transition layer connected by CO-Si bonds.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Significantly Improved Optical Performance: Gene editing creates a regular charge array, combined with electrostatic complementarity to guide the directional alignment of nanoparticles, completely eliminating bright spots and dark areas. This significantly boosts light transmission efficiency and improves light uniformity. The orderliness of the charge distribution increases from less than 30% to over 90%, enhancing the uniformity of nanoparticle distribution and optimizing light scattering efficiency, meeting the stringent light quality requirements of liquid crystal displays, lighting fixtures, and other applications.

[0013] 2. Breakthrough Anti-Aging Performance Bottle: Utilizing shape-memory polymers to create deformable particles, combined with pulsed pressure to form a "geometric lock" structure, combined with a multi-layered protection system, achieves industry-leading retention of mechanical strength and optical properties after aging in high-temperature, high-humidity environments. The "crater"-like structure increases the surface exposure of the UV-resistant nanoparticles, enhancing anti-aging capabilities and significantly improving light transmittance retention, effectively extending the product's lifespan.

[0014] 3. Significantly Improved Quality Stability: A multi-field synergy mechanism, combining magnetic field and ultrasonic waves with plasma processing, achieves dynamic control of the entire process through a combination of timed parameters. In-situ monitoring and real-time correction technology enable precise control of charge density. This significantly reduces performance fluctuations within a batch of products, achieving an industry-leading yield rate. For example, film thickness error has been reduced from ±30nm to ≤±10nm, addressing the issue of high quality control costs.

[0015] Break through the randomness of traditional chemical grafting; break through the geometric limitations of traditional spherical particles and form a "geometric-electrostatic" dual constraint mechanism; break through the limitations of single physical field modification and realize multi-field coordinated regulation, so that the light guide plate modification technology can leap from "passive response" to "active regulation", providing a new path for the performance upgrade of core components in the display and lighting fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the principle of the composite modification method for the surface of the nano anti-aging and brightening light guide plate of the present invention. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1 , the present invention provides a technical solution: See Figure 1 As shown, an embodiment of the composite modification method of the surface of a nano anti-aging and brightening light guide plate is as follows: 1. Biomimetic substrate construction – charge array regulation: 1. Silk protein genetic engineering modification and optimization: In the existing technology, physical coating or chemical grafting is mostly used to control the surface charge of the light guide plate. The charge distribution is random and unstable, and it is impossible to provide precise guidance for nanoparticles.

[0019] This method uses CRISPR-Cas9 gene editing technology to modify the spider silk protein gene. Specifically, the coding sequence for lysine (positively charged) and aspartic acid (negatively charged) is inserted into the spider silk protein gene, and the insertion sites are precisely controlled to be spaced every 15-20 amino acid residues. This parameter setting is not an empirical choice, but rather is derived through rigorous theoretical deduction and simulation verification. The following is a detailed demonstration of the process: 1.1、Charge array period optimization: According to Coulomb's law and the theory of intermolecular interactions, the electrostatic force between adjacent charges and spacing The relationship is: ; in, is the Coulomb constant ( ), and are the charges of the adjacent charges, is the charge distance. At the same time, there is a van der Waals force between the silk protein molecular chains. , whose expression is: ; in, is the van der Waals constant, which is related to the molecular polarizability. too small), electrostatic repulsion Dominate, causing the molecular chains to separate; when the charge is too sparse, the electrostatic attraction is insufficient and a regular array cannot be formed. Through molecular dynamics simulation, the silk protein molecular chain was used as the research object, and different charge insertion intervals (corresponding to ), calculate the total energy of the system : ; in, For the and The distance between the first charges.

[0020] To obtain the relationship between the total energy of the system and the charge array period, LAMMPS molecular dynamics simulation software was used, using a spider silk protein molecular chain containing 200 amino acid residues as a model, and setting the following parameters: ①、The charge of lysine and aspartic acid are set as and ; ② Van der Waals constant According to the molecular characteristics of silk protein, the value is ; ③、Simulation temperature is set to , the simulation time step is The total simulation time is ; During the simulation, the charge insertion site interval was changed and set to 、 、 、 、 、 、 , calculate the total energy of the system at different intervals The simulation results are shown in the following table (Table 1): Table 1: From the data, we can see that when the charge array period is 3-5 When the total energy of the system is within the range, it reaches the minimum value, indicating that the electrostatic force and the van der Waals force are in equilibrium.

[0021] Calculation of charge distribution order: A. Image Generation and Preprocessing: LAMMPS molecular dynamics simulation software was used to simulate the surface charge distribution of light guide plates prepared using traditional random grafting techniques, as well as the charge distribution manipulated using gene editing methods. Two-dimensional spatial charge distribution images were generated. The image resolution was set to 1000 × 1000 pixels. The grayscale value of each pixel corresponds to the charge density, with higher grayscale values ​​indicating greater charge density. To reduce simulation noise, the images were median filtered with a window size of 3 × 3 pixels.

[0022] B. Fourier transform: Use Python's SciPy library to perform a two-dimensional discrete Fourier transform (2DDFT) on the preprocessed image to convert the charge distribution in the spatial domain into frequency domain information. The mathematical expression of the Fourier transform is: ; in, is the coordinate in the spatial domain The charge density value at and are the width and height of the image respectively (both are 1000 here), and is the frequency domain coordinate, is the imaginary unit. After transformation, we get the complex matrix , its amplitude value Indicates the intensity of the corresponding frequency.

[0023] C. Peak Identification and Frequency Classification: Process the amplitude matrix of the frequency domain image and use a local maximum detection algorithm (such as the peak_local_max function in the scikit-image library) to identify intensity peaks. Set the threshold to 20% of the global maximum to filter out weaker noise peaks. The frequencies corresponding to the detected peaks are the ordered characteristic frequencies, which are grouped into an ordered frequency set and the number of frequencies in this set is counted. At the same time, the sum of the intensities at all frequencies in the frequency domain image is calculated ,in is the total number of frequencies.

[0024] D. Order degree calculation: For the traditional random grafting technology samples, after the above processing, the number of ordered frequencies detected Less, the sum of the peak intensities at a particular frequency Also lower: In a simulation, , , substitute into the order calculation formula: ; For samples regulated by gene editing methods, due to the regular array distribution of charges, multiple obvious and concentrated high-intensity peaks appear in the frequency domain: In a simulation calculation: , , then the order is: ; The simulation results show that when the charge array period When the particle size is 3-5 nm, the total energy of the system is at its lowest. At this point, the electrostatic and van der Waals forces are balanced, and the molecular chains form a stable, regular arrangement. Compared to traditional random grafting techniques, this method increases the order of charge distribution from less than 30% to over 90%, laying the foundation for the subsequent directional arrangement of nanoparticles.

[0025] 2. Dynamic regulation of low-temperature self-assembly: During the static process at 4°C, a pulsed electric field (field strength 50-100V / m, frequency 1-2Hz) was superimposed, and the electric field force was used to induce the silk protein molecular chains to orient along the direction of the electric field, so that the angle between the charge array and the normal direction of the light guide plate surface was controlled in the range of 15°-30° (traditional self-assembly has no external field intervention and the array direction is random).

[0026] It is necessary to add the following explanations here: A pulsed electric field was superimposed during the 4°C static process: Molecular dynamics theory shows that low temperatures can reduce the intensity of molecular thermal motion, keeping the system relatively stable and providing a basis for precise control of molecular self-assembly. At this point, the Brownian motion of silk protein molecules is weakened, making them more susceptible to external electric field forces.

[0027] The pulsed electric field is applied with a field strength of 50-100 V / m and a frequency of 1-2 Hz. According to Maxwell's equations, an electric field exerts a force on charged particles. For silk protein chains, the charges they carry cause them to move in a certain direction under the influence of the electric field. The field strength of 50-100 V / m is designed to effectively overcome the disordered thermal motion between molecules, causing the silk protein chains to align along the electric field, while also preventing the molecular structure from being destroyed due to excessive field strength. The frequency of 1-2 Hz is chosen to give the molecules sufficient time to respond to the electric field force while avoiding excessively rapid changes in the electric field direction due to excessive frequency, which could prevent the molecules from stabilizing their orientation.

[0028] Through these operations, the angle between the charge array and the normal to the light guide surface can be controlled within a range of 15°-30°. Traditional self-assembly processes lack the intervention of an external field, and molecular orientation relies entirely on random collisions and interactions between molecules, resulting in a chaotic and disorganized charge array orientation. However, this method achieves precise control of the charge array orientation by precisely controlling the electric field parameters. This precise control enables more effective light guidance, reduces light scattering and refraction losses, and improves light transmission efficiency.

[0029] 0.1-0.3g / L of nano-silica is added to the solution as an "assembly anchor". The hydroxyl groups on its surface form hydrogen bonds with the carboxyl groups of the silk protein, guiding the silk protein molecules to stack layer by layer with silica as the core, forming a uniform film with a thickness error of ≤±10nm (the thickness of the film in the existing technology fluctuates up to ±30nm).

[0030] It is necessary to add the following explanations here: 0.1-0.3g / L of nano-silica is added to the solution as an "assembly anchor." The surface of nano-silica is rich in hydroxyl groups, while silk protein molecules contain carboxyl groups. According to the principles of chemical thermodynamics and kinetics, hydroxyl and carboxyl groups can form hydrogen bonds, which are highly directional and selective. In the solution, the nano-silica is evenly dispersed, and its surface hydroxyl groups act as "active sites," specifically binding to the carboxyl groups of the silk protein. As the reaction proceeds, the silk protein molecules accumulate layer by layer, with the nano-silica as the core.

[0031] From the perspective of mass transfer and crystallization theory, the presence of nano-silica provides nucleation sites for the deposition of silk protein molecules, greatly reducing the energy required for nucleation. During the stacking process, due to the directional effect of hydrogen bonds, the silk protein molecules can be arranged in an orderly manner, thereby forming a uniform film with a thickness error of ≤±10nm. However, in the existing technology, there is a lack of effective nucleation guidance and molecular arrangement control means, and the film thickness fluctuates as much as ±30nm. The uniform film prepared by this method has significant advantages in performance. For example, in terms of mechanical properties, the uniform film structure can effectively avoid stress concentration and improve the tensile strength and flexibility of the film. It can better adapt to the deformation requirements of the light guide plate in different application scenarios.

[0032] 3. Charge array verification and correction: The film surface was scanned in situ using an atomic force microscope (AFM), and the charge distribution was monitored in real time using scanning Kelvin probe technology (SKPM). If the local charge density deviation was found to exceed 5%, the charge density was corrected by inducing isomerization of the silk protein side chain functional groups (such as conversion of sulfonic acid groups to carboxyl groups) using ultraviolet light.

[0033] 2. Dynamic Recombination of Nanoparticles – Charge-Morphology Cooperative Guidance: 1. Interface modification of shape memory nanoparticles: In existing technologies, the control of nanoparticle surface charge lacks quantitative design, and the contact area between spherical particles and the substrate is limited, resulting in low electrostatic adsorption efficiency and easy agglomeration. This method breaks through the traditional "single electrostatic effect" thinking and starts from the perspective of dual control of charge and morphology: Charge complementary design: By introducing quaternary ammonium salt-modified graphene quantum dots, the surface of the nanoparticles is given a positive charge (zeta potential +20 to +30 mV), forming a precise electrostatic match with the negative charge array of the biomimetic film (zeta potential -25 to -35 mV), solving the problem of randomness in traditional electrostatic adsorption.

[0034] Morphological and functional design: Microfluidic technology is used to construct a "crater"-like structure, breaking through the geometric limitations of spherical particles and exposing more charge interaction sites by increasing surface protrusions.

[0035] It is necessary to add the following explanations here: Charge control: According to colloidal chemistry theory, when the absolute value of the zeta potential is >20 mV, electrostatic repulsion between particles can effectively inhibit agglomeration. In this method, the zeta potential difference between the positively charged nanoparticles and the negatively charged substrate reaches 45-65 mV, forming a strong electrostatic attraction (the Coulomb force is expressed as: ), which improves adsorption energy compared to traditional random charge interactions. The doping level of quaternary ammonium salt-modified graphene quantum dots is controlled at 1-3wt%, which not only avoids particle agglomeration caused by excessive dosage but also maximizes charge exposure through the high specific surface area of ​​quantum dots. This significantly improves nanoparticle adsorption efficiency, significantly reduces the size of particle agglomerates, and significantly improves distribution uniformity. Uniformly dispersed nanoparticles with fully exposed charges have a reduced deposition rate during the subsequent acoustic suspension process and an increased directional migration rate in the alternating electric field, creating conditions for the formation of a regular array.

[0036] Microfluidic shear regulation: During emulsion polymerization, shear rate directly influences the phase separation behavior of the core-shell structure. When the shear rate is controlled between 500-800 rpm, according to fluid mechanics theory, high shear forces generate periodic pressure fluctuations in the shell layer, prompting anti-aging nanoparticles (such as TiO2) to migrate to the shell surface and form "crater"-like protrusions. This shear rate range increases the particle exposure on the shell surface and the density of charge interaction sites on the protrusions. The "crater" structure enhances light scattering efficiency and improves light uniformity. The increased surface exposure of the UV-resistant nanoparticles enhances their anti-aging properties, significantly improving light transmittance retention. The "crater" protrusions and the charge array grooves form a "geometric lock." Under stepped heating and pulsed pressure, the interfacial bonding strength is significantly enhanced compared to traditional electrostatic interactions, effectively preventing nanoparticle shedding.

[0037] 2. Suspension-electric field coordinated arrangement: The frequency of the acoustic levitation is regulated in stages: in the initial stage (0-5min), high-frequency acoustic waves of 20-30kHz are used to break up nanoparticle aggregates, and then low-frequency acoustic waves of 30-50kHz are switched to maintain the suspension of individual particles. The suspension height is controlled at 5-10mm above the light guide plate (the existing technology uses a single frequency suspension, and particles are prone to sedimentation).

[0038] The alternating electric field adopts a "pulse-gradient" composite mode: a low-frequency (5Hz) pulsed electric field of 100-200V / m is applied in the first 10 minutes to promote the directional migration of nanoparticles along the direction of the charge array; in the next 10 minutes, the field strength is linearly increased to 200-300V / m, and the frequency is increased to 10Hz at the same time, and the electric field force gradient is used to compress the particle distance to 10-20nm (the traditional alternating electric field has no gradient control, and the particle distance fluctuates greatly).

[0039] 3. Temperature-pressure synergistic bonding: The heating process uses a step-by-step temperature control method: the temperature is raised from room temperature to 40°C (at a rate of 2°C / min) to initially flatten the nanoparticles. After keeping the temperature for 5 minutes, the temperature is raised to 50°C at a rate of 1°C / min to ensure uniform particle deformation (the linear heating method of the existing technology is prone to local overheating and deformation).

[0040] The inert gas pressure is pulsed loaded: first pre-pressed at 0.1MPa for 1 minute, then suddenly increased to 0.3MPa and maintained for 3 minutes. The pressure fluctuation is used to create micro-wrinkles on the edges of the flat particles, forming a "locking" structure with the grooves of the charge array (the binding force of traditional constant pressure loading relies only on electrostatic effects).

[0041] 3. Physical Field Collaborative Solidification - Multi-field Coupling Interface Strengthening: 1. Magnetic-acoustic synergistic orientation mechanism: 0.5-1wt% Fe3O4@SiO2 core-shell magnetic particles are doped into the nanoparticles. Under the action of a strong magnetic field (1-3T), the magnetic particles form nanoscale "magnetic chains" and form a double redirection effect with the charge array (the existing technology only relies on the disordered arrangement of magnetic particles).

[0042] Ultrasonic waves use a "frequency hopping" mode: first, they excite the nanoparticles to resonate at a frequency of 40-60kHz to destroy the interfacial hydration layer, and then switch to a frequency of 60-80kHz to promote the diffusion of molecular segments, thereby increasing the interfacial binding energy by 30-40% (traditional fixed-frequency ultrasonic interface modification has low efficiency).

[0043] 2. Low-temperature plasma interface reconstruction: The processing gas is a mixed gas of helium-oxygen-methane (9:1:0.5). The carbon free radicals generated by the decomposition of methane in the plasma react with the hydroxyl groups on the surface of the light guide plate to form a transition layer connected by CO-Si bonds (the existing technology mostly uses a single gas, and the interface bonding strength is low).

[0044] The RF power is pulse modulated (duty cycle 70%), and when processed at a power of 50-100W, it is interrupted for 1 second every 10 seconds to avoid local overheating that may cause attenuation of the thin film charge array (traditional continuous power processing can easily destroy the bionic structure).

[0045] Summarize: Existing light guide plate surface modification technologies, due to their neglect of the microscopic mechanisms of electrostatic adsorption, face three major bottlenecks: poor optical uniformity due to electrostatic interference in nanoparticle distribution, weak anti-aging performance caused by spherical particle agglomeration, and quality fluctuations due to single-field treatment. This method, through a comprehensive innovation chain encompassing "biomimetic guidance - dynamic morphology control - multi-field synergistic enhancement," systematically addresses the performance deficiencies caused by electrostatic adsorption by precisely constructing charge arrays, functionalizing particle morphology, and dynamically controlling the entire process.

[0046] Gene editing is used to construct regular charge arrays within silk proteins (overcoming the randomness inherent in traditional chemical grafting). Combined with low-temperature pulsed electric field manipulation, this significantly enhances the order of these charge arrays. By incorporating CRISPR technology from the life sciences into material surface modification, precise manipulation of the silk protein charge sequence enables the precise construction of nanoscale charge arrays on the light guide surface. Electrostatic complementation guides the nanoparticles' directional alignment, significantly increasing light transmission efficiency and improving light uniformity. Bright spots and dark areas are completely eliminated, addressing the challenge of unstable optical performance.

[0047] Deformable particles made from shape-memory polymers, combined with pulsed pressure to form a "geometric lock" structure, significantly enhance interfacial bonding strength. This overcomes the geometric limitations of traditional spherical particles by combining the temperature-responsive deformation properties of shape-memory materials with a charge array to create a dual "geometric-electrostatic" constraint mechanism. Temperature-induced deformation increases contact area, while pulsed pressure strengthens the mechanical lock, and electrostatic attraction achieves high-density, ordered arrangement of nanoparticles. Furthermore, by increasing the number of charge interaction sites and combining it with a multi-layered protection system, the material achieves industry-leading retention of both mechanical strength and optical properties after aging in high-temperature, high-humidity environments, breaking through the bottleneck of insufficient anti-aging capabilities.

[0048] A multi-field synergistic mechanism combining magnetic field and ultrasonic wave synergy and plasma treatment is constructed, achieving dynamic control of the entire process through timed parameter combinations (such as frequency hopping in magnetic-acoustic synergy and plasma pulse modulation power). Breaking through the limitations of single physical field modification, parameter synergy modes such as "step-by-step heating-pulse pressure-frequency-hopping ultrasound" regulate the destruction of the interfacial hydration layer and the diffusion of molecular chains, promoting the directional alignment of nanoparticles while preventing the attenuation of the charge array due to continuous power treatment. In-situ monitoring and real-time correction technologies enable precise control of charge density, significantly reducing performance fluctuations within the same batch of products and achieving an industry-high yield rate, thus resolving the issue of high quality control costs.

[0049] It not only fundamentally solves the optical, anti-aging and quality stability problems caused by electrostatic adsorption, but also the leap from "passive response" to "active regulation" in light guide plate modification technology provides a new path for performance upgrades of core components in the display and lighting fields.

Claims

1. A nanometer anti-aging and brightening light guide plate surface composite modification method, characterized in that: The following steps are involved: Construct biomimetic substrate-regulated charge arrays; Dynamic recombination of nanoparticles, guiding the arrangement of nanoparticles through charge-morphology synergy; Implement physical field synergistic curing for strengthening interface bonding.

2. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 1, characterized in that: Constructing a biomimetic substrate-regulated charge array includes: CRISPR-Cas9 gene editing was used to modify the spider silk protein gene, inserting coding sequences containing lysine and aspartic acid. The insertion sites were regulated to be spaced every 15-20 amino acid residues, and the charge array period was controlled to 3-5nm to balance electrostatic forces and van der Waals forces. During the static process at 4°C, a pulsed electric field with a field strength of 50-100 V / m and a frequency of 1-2 Hz was superimposed to control the angle between the charge array and the normal direction of the light guide surface in the range of 15°-30°; 0.1-0.3 g / L of nano-silica was added to the solution as an assembly anchor to form a uniform film with a thickness error of ≤±10 nm.

3. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 2, characterized in that: The charge distribution was monitored in real time by in situ scanning using an atomic force microscope combined with a scanning Kelvin probe. When the local charge density deviation exceeded 5%, the charge density was corrected by inducing isomerization of the silk protein side chain functional groups using ultraviolet light.

4. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 1, characterized in that: Nanoparticle dynamic compounding includes: The shape memory of nanoparticles was modified by introducing quaternary ammonium salt-modified graphene quantum dots to make the nanoparticle surface positively charged, forming an electrostatic match with the negative charge array of the biomimetic film, and using microfluidics technology to construct a crater-like structure; The acoustic levitation frequency is controlled in stages. In the initial stage, high-frequency sound waves of 20-30kHz are used to break up aggregates, and then low-frequency sound waves of 30-50kHz are switched to maintain the suspension of individual particles. The suspension height is controlled at 5-10mm above the light guide plate. An alternating electric field in a pulse-gradient composite mode was applied, with a low-frequency pulsed electric field of 100-200 V / m applied for the first 10 minutes, and the field intensity was linearly increased to 200-300 V / m and the frequency was increased to 10 Hz for the next 10 minutes to compress the interparticle distance to 10-20 nm.

5. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 4, characterized in that: Temperature-pressure synergistic bonding is specifically: The nanoparticles were initially flattened by using step-by-step temperature control, rising from room temperature to 40°C. After keeping the temperature for 5 minutes, the temperature was raised to 50°C at a rate of 1°C / min. At the same time, pulsed inert gas pressure was applied, first pre-pressing at 0.1MPa for 1 minute, then suddenly increasing to 0.3MPa and maintaining for 3 minutes.

6. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 1, characterized in that: Physical field collaborative solidification includes: 0.5-1wt% Fe3O4@SiO2 core-shell magnetic particles are doped into the nanoparticles, and nanoscale magnetic chains are formed under the action of a strong magnetic field of 1-3T. Ultrasonic waves in frequency hopping mode are used to excite resonance at 40-60kHz and then switch to 60-80kHz to promote the diffusion of molecular chains. The low-temperature plasma treatment was performed using a helium-oxygen-methane mixed gas, and the radio frequency power was pulse-modulated at a power of 50-100 W with an interruption of 1 second every 10 seconds.

7. The surface composite modification method for nano-anti-aging and brightening light guide plates according to claim 4, characterized in that: The nanoparticles are shape memory polymer particles doped with anti-aging nanoparticles, and their crater-shaped protrusions form a geometric locking structure with the charge array grooves.

8. The method for composite modification of the surface of a nanometer anti-aging and brightening light guide plate according to claim 6, characterized in that: During the low-temperature plasma treatment, carbon free radicals generated by the decomposition of methane react with hydroxyl groups on the surface of the light guide plate to form a transition layer connected by CO-Si bonds.

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