Display screen coating process

Abstract

The invention relates to the field of display, in particular to a display screen coating process which mainly comprises the following steps: plasma treatment, coating solution spraying, spin coating, low-temperature curing, fingerprint-resistant treatment and ion beam bombardment. Firstly, the surface of a base material is activated through a plasma processor, the number of active groups is increased, and the adhesive force of a coating material is enhanced; and then, uniformly spraying the coating solution on the surface of the base material by using high-speed precise spraying equipment to ensure the consistency of the thickness of the film layer. Then, the solution is further uniformly distributed on the surface of the base material through a rotary coating machine, and bubbles and cracks are avoided; and the sprayed base material is cured by the low-temperature oven at the temperature of 60-80 DEG C, so that the film layer is stable. And then, fluorocarbon resin containing a silane coupling agent is used for anti-fingerprint treatment, so that fingerprint traces left due to finger touch are reduced, and the attractiveness and the user experience are improved. And finally, the surface hardness and wear resistance of the film layer are enhanced through an ion beam bombardment technology.

Description

Technical Field

[0001] The invention relates to the field of display, and in particular to a display screen coating process. Background Art

[0002] With the rapid development of display technology, various display screens are increasingly used in consumer electronics, automotive displays, medical equipment, industrial control and other fields. In order to improve the optical performance, anti-reflection ability, wear resistance and anti-fingerprint performance of display screens, coating technology has become one of the key technical links. Although traditional coating processes such as physical vapor deposition (PVD) and chemical vapor deposition (CVD) have improved the performance of display screens to a certain extent, they still have shortcomings in uniformity, adhesion and cost control. Therefore, the development of a new display coating process has important practical significance and commercial value. Summary of the invention

[0003] The object of the present invention is to provide a display screen coating process to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a display screen coating process, comprising the following steps:

[0005] Step 1: Substrate pretreatment:

[0006] Cleaning: Use an ultrasonic cleaner to clean the display surface to remove oil, dust and impurities. Use deionized water or a solution containing a surfactant as the cleaning fluid. The cleaning time is 5-15 minutes.

[0007] Surface activation: plasma treatment is used to activate the display surface to enhance the adhesion of the coating material. The treatment time is 30-60 seconds and the plasma power is 100-300W.

[0008] Step 2: Preparation of coating materials:

[0009] Material selection: Inorganic materials with high transparency and hardness such as silicon dioxide, aluminum oxide or silicon nitride are selected as the main coating materials, and magnesium fluoride or calcium fluoride is added to improve the anti-reflection ability;

[0010] Solution preparation: the above materials are made into nano-scale particles and dissolved in a solvent to form a uniform coating solution, the solvent is ethanol, acetone or deionized water, wherein the solution concentration is 0.1-1%, calculated by weight ratio;

[0011] Step 3: Coating process:

[0012] Spraying: Use high-speed precision spraying equipment to evenly spray the coating solution on the display surface. The spraying speed is 1-5μm / s, and the distance between the nozzle and the display surface is 10-20mm;

[0013] Spin coating: After spraying, place the display screen in a spin coater and spin it to evenly distribute the coating solution on the surface of the display screen. The rotation speed is 500-2000 rpm and the coating time is 30-60 seconds.

[0014] Curing: Send the coated display screen into the oven for curing. The curing temperature is 80-120℃ and the curing time is 10-30 minutes;

[0015] Step 4: Surface treatment:

[0016] Anti-fingerprint treatment: spray a layer of anti-fingerprint treatment agent on the cured coating layer, specifically a fluorocarbon resin containing a silane coupling agent, with a spraying speed of 0.5-1μm / s and a spraying thickness of 0.1-0.5μm;

[0017] Hardness enhancement: Ion beam bombardment technology is used to enhance the surface hardness of the coating layer. The bombardment energy is 100-500eV and the bombardment time is 5-15 minutes;

[0018] Step 5: Performance test:

[0019] Optical performance test: Use a spectrophotometer to measure the transmittance and reflectance of the display screen, where the transmittance should be greater than 90% and the reflectance should be less than 1%;

[0020] Wear resistance test: Use a wear tester to test the coating layer to ensure that the wear resistance of the coating layer meets the standard requirements;

[0021] Anti-fingerprint performance test: Spray grease on the surface of the display, wipe it with a cotton cloth and observe the residue on the surface to ensure that there is no obvious fingerprint residue on the surface.

[0022] Preferably, the specific steps of substrate pretreatment in step 1 are as follows:

[0023] Step 11, prepare cleaning equipment and materials: use an ultrasonic cleaning machine as the cleaning equipment, wherein the ultrasonic cleaning machine should have adjustable power and time control functions; prepare deionized water or a solution containing a surfactant as the cleaning solution, and the resistivity of the specific deionized water should be greater than 1MΩ·cm;

[0024] Step 12: Perform ultrasonic cleaning: Carefully place the display screen substrate into the cleaning tank of the ultrasonic cleaning machine, ensuring that the substrate is completely immersed in the cleaning solution; start the ultrasonic cleaning machine and begin the cleaning process; ultrasonic waves will generate high-frequency vibrations to remove impurities on the surface of the substrate through cavitation; during the cleaning process, pay attention to the state of the substrate to avoid damage to the substrate due to ultrasonic vibrations;

[0025] Step 13, post-cleaning treatment: After cleaning is completed, turn off the ultrasonic cleaning machine; take the substrate out of the cleaning tank and rinse it with deionized water or pure water to remove the residual cleaning solution; blow dry with nitrogen or dry it naturally in a clean environment;

[0026] Step 14, prepare plasma treatment equipment: use a plasma cleaning machine as a cleaning equipment;

[0027] Step 15, perform plasma treatment: carefully place the display screen substrate treated in step 13 into the treatment chamber of the plasma cleaning machine, and ensure that the substrate is placed stably; close the treatment chamber, start the plasma cleaning machine, and start the treatment process. The plasma will physically and chemically act on the surface of the substrate to remove organic pollutants and increase active groups; during the treatment process, pay attention to the state of the substrate to avoid damage to the substrate due to excessive plasma.

[0028] Preferably, the specific steps of the coating process in step 3 are as follows:

[0029] Step 31, prepare spraying equipment and materials: use high-speed precision spraying equipment; ensure that the nozzle and feeding system of the spraying equipment are clean and free of impurities; prepare the coating solution prepared in step 2;

[0030] Step 32, spraying speed: 1-5 μm / s, the specific speed is adjusted according to the size of the substrate and the properties of the coating material; the distance between the nozzle and the surface of the substrate: 10-20 mm, the specific distance is adjusted according to the size of the substrate and the performance of the spraying equipment; the spraying pressure: 0.2-0.5 MPa, the specific pressure is adjusted according to the nozzle type and the viscosity of the coating solution;

[0031] Step 33, perform spraying operation: fix the display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the spraying process, and ensure uniform spraying; after the spraying is completed, turn off the spraying equipment and take out the substrate;

[0032] Step 34, perform spin coating operation: carefully place the sprayed display screen substrate on the tray of the spin coater to ensure that the substrate is stable and does not move; start the spin coater, perform coating operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the rotation process, and ensure that the solution is uniform; after the spin coating is completed, turn off the equipment and take out the substrate;

[0033] Step 35, post-spin coating treatment: immediately send the spin-coated substrate into an oven for curing treatment to prevent uneven drying of the solution; keep the operating environment clean and dust-free to prevent impurities from contaminating the substrate surface;

[0034] Step 36: Prepare the oven: Use an oven with temperature control to ensure even temperature distribution; clean the inside of the oven to ensure there is no contamination;

[0035] Step 37, set the curing parameters: curing temperature: 80-120°C, the specific temperature should be adjusted according to the properties of the coating material and the heat resistance of the substrate; curing time: 10-30 minutes, the specific time should be adjusted according to the size of the substrate and the properties of the solution;

[0036] Step 38, perform curing operation: carefully place the display screen substrate after spin coating into the oven, ensure that the substrate is placed stably and does not collide; start the oven, perform curing operation according to the set parameters, observe the state of the substrate during the curing process, and ensure that the temperature is uniform; after curing is completed, turn off the oven, and take out the substrate after it cools to room temperature; perform a preliminary visual inspection on the cured substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface.

[0037] Preferably, the specific steps of the surface treatment in step 4 are as follows:

[0038] Step 41, prepare an anti-fingerprint treatment agent: select a fluorocarbon resin containing a silane coupling agent as the anti-fingerprint treatment agent, the silane coupling agent enhances the adhesion between the fluorocarbon resin and the coating layer; dilute the anti-fingerprint treatment agent to an appropriate concentration, the specific installation weight ratio is 0.1-0.5%;

[0039] Step 42, perform spraying operation: fix the cured display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the treatment agent on the surface of the substrate during the spraying process, and ensure uniform spraying; after the spraying is completed, close the spraying equipment and take out the substrate;

[0040] Step 43, post-spraying treatment: immediately place the sprayed substrate into an oven for low-temperature curing treatment to prevent the treatment agent from drying too quickly and causing uneven distribution; the low-temperature curing temperature is set at 60-80°C and the curing time is 5-10 minutes;

[0041] Step 44, preparing an ion beam bombardment device: using an ion beam bombardment device, specifically an ion beam sputtering machine or an ion beam surface modification machine;

[0042] Step 45, set the ion beam bombardment parameters: bombardment energy: 100-500eV, the specific energy is adjusted according to the properties of the coating material and the tolerance of the substrate; bombardment time: 5-15 minutes, the specific time is adjusted according to the size of the substrate and the intensity of the ion beam; ion beam current density: 0.1-0.5mA / cm 2 , the specific current density is adjusted according to the performance of the equipment and the requirements of the substrate;

[0043] Step 46, perform ion beam bombardment operation: carefully place the display screen substrate sprayed with anti-fingerprint treatment agent and low-temperature cured in the vacuum chamber of the ion beam bombardment equipment to ensure that the substrate is stable and does not move; evacuate the vacuum chamber to an appropriate vacuum degree, specifically 10 -3 Up to 10 -6 Torr; start the ion beam bombardment equipment, perform the bombardment operation according to the set parameters, observe the state of the substrate during the bombardment process, and ensure that the bombardment is uniform and there is no local overheating; after the bombardment is completed, turn off the equipment and take the substrate out of the vacuum chamber; perform a preliminary visual inspection on the bombarded substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface.

[0044] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can effectively remove oil, dust and other impurities on the surface of the substrate by using an ultrasonic cleaning machine and deionized water or a solution containing a surfactant. The selection of the cleaning solution and the precise control of the cleaning time ensure the cleanliness of the substrate surface, thereby providing a good foundation for the subsequent coating process; the substrate surface is activated by plasma treatment, which increases the active groups (such as hydroxyl, carboxyl, etc.) on the substrate surface. The precise control of the plasma treatment time (30-60 seconds) and the reasonable adjustment of the plasma power (100-300W) significantly enhance the adhesion of the coating material on the substrate, and improve the stability and durability of the coating layer; high-speed precision spraying equipment is used for spraying, the spraying speed is controlled at 1-5μm / s, and the distance between the nozzle and the substrate surface is set to 10-20mm, which ensures the uniform spraying of the solution. The subsequent spin coating step further evenly distributes the coating solution on the surface of the substrate by precisely controlling the rotation speed (500-2000 rpm) and the coating time (30-60 seconds), forming a coating layer with uniform thickness, no bubbles and cracks; a fluorocarbon resin containing a silane coupling agent is sprayed on the coating layer as an anti-fingerprint treatment agent, and the spraying speed is controlled at 0.5-1μm / s, and the spraying thickness is accurate to 0.1-0.5μm. This treatment not only effectively reduces the fingerprint marks left by finger touch, but also improves the aesthetics and user experience of the display screen; the ion beam bombardment technology is adopted, the bombardment energy is set at 100-500eV, and the bombardment time is controlled at 5-15 minutes, which significantly enhances the surface hardness and wear resistance of the coating layer. This not only extends the service life of the display screen, but also improves its scratch resistance in daily use; the parameters of each step of the present invention are precisely designed and optimized, and the high controllability and repeatability of the process are ensured by using advanced equipment and control technology. Operators only need to follow the set parameters to obtain consistent processing results, improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the process flow of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 The present invention provides a technical solution: a display screen coating process, comprising the following steps:

[0048] Step 1: Substrate pretreatment:

[0049] Cleaning: Use an ultrasonic cleaner to clean the display surface to remove oil, dust and impurities. Use deionized water or a solution containing a surfactant as the cleaning fluid. The cleaning time is 5-15 minutes.

[0050] Surface activation: plasma treatment is used to activate the display surface to enhance the adhesion of the coating material. The treatment time is 30-60 seconds and the plasma power is 100-300W.

[0051] Step 2: Preparation of coating materials:

[0052] Material selection: Inorganic materials with high transparency and hardness such as silicon dioxide, aluminum oxide or silicon nitride are selected as the main coating materials, and magnesium fluoride or calcium fluoride is added to improve the anti-reflection ability;

[0053] Solution preparation: the above materials are made into nano-scale particles and dissolved in a solvent to form a uniform coating solution, the solvent is ethanol, acetone or deionized water, wherein the solution concentration is 0.1-1%, calculated by weight ratio;

[0054] Step 3: Coating process:

[0055] Spraying: Use high-speed precision spraying equipment to evenly spray the coating solution on the display surface. The spraying speed is 1-5μm / s, and the distance between the nozzle and the display surface is 10-20mm;

[0056] Spin coating: After spraying, place the display screen in a spin coater and spin it to evenly distribute the coating solution on the surface of the display screen. The rotation speed is 500-2000 rpm and the coating time is 30-60 seconds.

[0057] Curing: Send the coated display screen into the oven for curing. The curing temperature is 80-120℃ and the curing time is 10-30 minutes;

[0058] Step 4: Surface treatment:

[0059] Anti-fingerprint treatment: spray a layer of anti-fingerprint treatment agent on the cured coating layer, specifically a fluorocarbon resin containing a silane coupling agent, with a spraying speed of 0.5-1μm / s and a spraying thickness of 0.1-0.5μm;

[0060] Hardness enhancement: Ion beam bombardment technology is used to enhance the surface hardness of the coating layer. The bombardment energy is 100-500eV and the bombardment time is 5-15 minutes;

[0061] Step 5: Performance test:

[0062] Optical performance test: Use a spectrophotometer to measure the transmittance and reflectance of the display screen, where the transmittance should be greater than 90% and the reflectance should be less than 1%;

[0063] Wear resistance test: Use a wear tester to test the coating layer to ensure that the wear resistance of the coating layer meets the standard requirements;

[0064] Anti-fingerprint performance test: Spray grease on the surface of the display, wipe it with a cotton cloth and observe the residue on the surface to ensure that there is no obvious fingerprint residue on the surface.

[0065] Furthermore, the specific steps of substrate pretreatment in step 1 are as follows:

[0066] Step 11, prepare cleaning equipment and materials: use an ultrasonic cleaning machine as the cleaning equipment, wherein the ultrasonic cleaning machine should have adjustable power and time control functions; prepare deionized water or a solution containing a surfactant as the cleaning solution, and the resistivity of the specific deionized water should be greater than 1MΩ·cm;

[0067] Step 12: Perform ultrasonic cleaning: Carefully place the display screen substrate into the cleaning tank of the ultrasonic cleaning machine, ensuring that the substrate is completely immersed in the cleaning solution; start the ultrasonic cleaning machine and begin the cleaning process; ultrasonic waves will generate high-frequency vibrations to remove impurities on the surface of the substrate through cavitation; during the cleaning process, pay attention to the state of the substrate to avoid damage to the substrate due to ultrasonic vibrations;

[0068] Step 13, post-cleaning treatment: After cleaning is completed, turn off the ultrasonic cleaning machine; take the substrate out of the cleaning tank and rinse it with deionized water or pure water to remove the residual cleaning solution; blow dry with nitrogen or dry it naturally in a clean environment;

[0069] Step 14, prepare plasma treatment equipment: use a plasma cleaning machine as a cleaning equipment;

[0070] Step 15, perform plasma treatment: carefully place the display screen substrate treated in step 13 into the treatment chamber of the plasma cleaning machine, and ensure that the substrate is placed stably; close the treatment chamber, start the plasma cleaning machine, and start the treatment process. The plasma will physically and chemically act on the surface of the substrate to remove organic pollutants and increase active groups; during the treatment process, pay attention to the state of the substrate to avoid damage to the substrate due to excessive plasma.

[0071] Furthermore, the specific steps of the coating process in step 3 are as follows:

[0072] Step 31, prepare spraying equipment and materials: use high-speed precision spraying equipment; ensure that the nozzle and feeding system of the spraying equipment are clean and free of impurities; prepare the coating solution prepared in step 2;

[0073] Step 32, spraying speed: 1-5 μm / s, the specific speed is adjusted according to the size of the substrate and the properties of the coating material; the distance between the nozzle and the surface of the substrate: 10-20 mm, the specific distance is adjusted according to the size of the substrate and the performance of the spraying equipment; the spraying pressure: 0.2-0.5 MPa, the specific pressure is adjusted according to the nozzle type and the viscosity of the coating solution;

[0074] Step 33, perform spraying operation: fix the display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the spraying process, and ensure uniform spraying; after the spraying is completed, turn off the spraying equipment and take out the substrate;

[0075] Step 34, perform spin coating operation: carefully place the sprayed display screen substrate on the tray of the spin coater to ensure that the substrate is stable and does not move; start the spin coater, perform coating operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the rotation process, and ensure that the solution is uniform; after the spin coating is completed, turn off the equipment and take out the substrate;

[0076] Step 35, post-spin coating treatment: immediately send the spin-coated substrate into an oven for curing treatment to prevent uneven drying of the solution; keep the operating environment clean and dust-free to prevent impurities from contaminating the substrate surface;

[0077] Step 36: Prepare the oven: Use an oven with temperature control to ensure even temperature distribution; clean the inside of the oven to ensure there is no contamination;

[0078] Step 37, set the curing parameters: curing temperature: 80-120°C, the specific temperature should be adjusted according to the properties of the coating material and the heat resistance of the substrate; curing time: 10-30 minutes, the specific time should be adjusted according to the size of the substrate and the properties of the solution;

[0079] Step 38, perform curing operation: carefully place the display screen substrate after spin coating into the oven, ensure that the substrate is placed stably and does not collide; start the oven, perform curing operation according to the set parameters, observe the state of the substrate during the curing process, and ensure that the temperature is uniform; after curing is completed, turn off the oven, and take out the substrate after it cools to room temperature; perform a preliminary visual inspection on the cured substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface.

[0080] Further, the specific steps of the surface treatment in step 4 are as follows:

[0081] Step 41, prepare an anti-fingerprint treatment agent: select a fluorocarbon resin containing a silane coupling agent as the anti-fingerprint treatment agent, the silane coupling agent enhances the adhesion between the fluorocarbon resin and the coating layer; dilute the anti-fingerprint treatment agent to an appropriate concentration, the specific installation weight ratio is 0.1-0.5%;

[0082] Step 42, perform spraying operation: fix the cured display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the treatment agent on the surface of the substrate during the spraying process, and ensure uniform spraying; after the spraying is completed, close the spraying equipment and take out the substrate;

[0083] Step 43, post-spraying treatment: immediately place the sprayed substrate into an oven for low-temperature curing treatment to prevent the treatment agent from drying too quickly and causing uneven distribution; the low-temperature curing temperature is set at 60-80°C and the curing time is 5-10 minutes;

[0084] Step 44, preparing an ion beam bombardment device: using an ion beam bombardment device, specifically an ion beam sputtering machine or an ion beam surface modification machine;

[0085] Step 45, set the ion beam bombardment parameters: bombardment energy: 100-500eV, the specific energy is adjusted according to the properties of the coating material and the tolerance of the substrate; bombardment time: 5-15 minutes, the specific time is adjusted according to the size of the substrate and the intensity of the ion beam; ion beam current density: 0.1-0.5mA / cm 2 , the specific current density is adjusted according to the performance of the equipment and the requirements of the substrate;

[0086] Step 46, perform ion beam bombardment operation: carefully place the display screen substrate sprayed with anti-fingerprint treatment agent and low-temperature cured in the vacuum chamber of the ion beam bombardment equipment to ensure that the substrate is stable and does not move; evacuate the vacuum chamber to an appropriate vacuum degree, specifically 10 -3 Up to 10 -6 Torr; start the ion beam bombardment equipment, perform the bombardment operation according to the set parameters, observe the state of the substrate during the bombardment process, and ensure that the bombardment is uniform and there is no local overheating; after the bombardment is completed, turn off the equipment and take the substrate out of the vacuum chamber; perform a preliminary visual inspection on the bombarded substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface

[0087] The present invention significantly increases the active groups on the surface of the substrate through plasma treatment, making the surface of the substrate cleaner and providing a good foundation for subsequent coating; the surface adhesion of the substrate after plasma treatment is significantly improved, the bonding between the coating layer and the substrate is more firm, and the risk of shedding and delamination is reduced; the combination of spraying and spin coating ensures the uniform distribution of the coating solution on the surface of the substrate, forms a film layer without bubbles and cracks, and improves the appearance quality and reliability of the product; the spraying of the anti-fingerprint treatment agent forms an effective anti-fingerprint protection layer on the surface of the coating layer, significantly reduces the fingerprint marks left by finger touch, and improves the aesthetics and user experience of the display screen; the ion beam bombardment technology significantly enhances the surface hardness and wear resistance of the coating layer, making the display screen more scratch-resistant in daily use and extending its service life; the parameters of each step are precisely designed and optimized, and advanced equipment and technology are used to ensure the high controllability and repeatability of the process, and improve production efficiency and product quality.

[0088] In summary, the present invention solves multiple problems existing in traditional methods by systematically optimizing the surface treatment and coating process of display screens, and significantly improves the surface performance and service life of display screens. The process is not only highly efficient and controllable, but also meets the requirements of environmental protection and safety, and has broad application prospects and market potential.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen coating process, characterized in that: The following steps are involved: Step 1: Substrate pretreatment: Cleaning: Use an ultrasonic cleaner to clean the display surface to remove oil, dust and impurities. Use deionized water or a solution containing a surfactant as the cleaning fluid. The cleaning time is 5-15 minutes. Surface activation: plasma treatment is used to activate the display surface to enhance the adhesion of the coating material. The treatment time is 30-60 seconds and the plasma power is 100-300W. Step 2: Preparation of coating materials: Material selection: Inorganic materials with high transparency and hardness are selected, specifically silicon dioxide, aluminum oxide or silicon nitride as the main coating materials, and magnesium fluoride or calcium fluoride is added to improve the anti-reflection ability; Solution preparation: the above materials are made into nano-scale particles and dissolved in a solvent to form a uniform coating solution, the solvent is ethanol, acetone or deionized water, wherein the solution concentration is 0.1-1%, calculated by weight ratio; Step 3: Coating process: Spraying: Use high-speed precision spraying equipment to evenly spray the coating solution on the display surface. The spraying speed is 1-5μm / s, and the distance between the nozzle and the display surface is 10-20mm; Spin coating: After spraying, place the display screen in a spin coater and spin it to evenly distribute the coating solution on the surface of the display screen. The rotation speed is 500-2000 rpm and the coating time is 30-60 seconds. Curing: Send the coated display screen into the oven for curing. The curing temperature is 80-120℃ and the curing time is 10-30 minutes; Step 4: Surface treatment: Anti-fingerprint treatment: spray a layer of anti-fingerprint treatment agent on the cured coating layer, specifically a fluorocarbon resin containing a silane coupling agent, with a spraying speed of 0.5-1μm / s and a spraying thickness of 0.1-0.5μm; Hardness enhancement: Ion beam bombardment technology is used to enhance the surface hardness of the coating layer. The bombardment energy is 100-500eV and the bombardment time is 5-15 minutes. Step 5: Performance test: Optical performance test: Use a spectrophotometer to measure the transmittance and reflectance of the display screen, where the transmittance should be greater than 90% and the reflectance should be less than 1%; Wear resistance test: Use a wear tester to test the coating layer to ensure that the wear resistance of the coating layer meets the standard requirements; Anti-fingerprint performance test: Spray grease on the surface of the display, wipe it with a cotton cloth and observe the residue on the surface to ensure that there is no obvious fingerprint residue on the surface.

2. A display screen coating process according to claim 1, characterized in that: The specific steps of substrate pretreatment in step 1 are as follows: Step 11, prepare cleaning equipment and materials: use an ultrasonic cleaning machine as the cleaning equipment, wherein the ultrasonic cleaning machine should have adjustable power and time control functions; prepare deionized water or a solution containing a surfactant as the cleaning solution, and the resistivity of the specific deionized water should be greater than 1MΩ·cm; Step 12: Perform ultrasonic cleaning: Carefully place the display screen substrate into the cleaning tank of the ultrasonic cleaning machine, ensuring that the substrate is completely immersed in the cleaning solution; start the ultrasonic cleaning machine and begin the cleaning process; ultrasonic waves will generate high-frequency vibrations to remove impurities on the surface of the substrate through cavitation; during the cleaning process, pay attention to the state of the substrate to avoid damage to the substrate due to ultrasonic vibrations; Step 13, post-cleaning treatment: After cleaning is completed, turn off the ultrasonic cleaning machine; take the substrate out of the cleaning tank and rinse it with deionized water or pure water to remove the residual cleaning solution; blow dry with nitrogen or dry it naturally in a clean environment; Step 14, prepare plasma treatment equipment: use a plasma cleaning machine as a cleaning equipment; Step 15, perform plasma treatment: carefully place the display screen substrate treated in step 13 into the treatment chamber of the plasma cleaning machine, and ensure that the substrate is placed stably; close the treatment chamber, start the plasma cleaning machine, and start the treatment process. The plasma will physically and chemically act on the surface of the substrate to remove organic pollutants and increase active groups; during the treatment process, pay attention to the state of the substrate to avoid damage to the substrate due to excessive plasma.

3. A display screen coating process according to claim 1, characterized in that: The specific steps of the coating process in step 3 are as follows: Step 31, prepare spraying equipment and materials: use high-speed precision spraying equipment; ensure that the nozzle and feeding system of the spraying equipment are clean and free of impurities; prepare the coating solution prepared in step 2; Step 32, spraying speed: 1-5 μm / s, the specific speed is adjusted according to the size of the substrate and the properties of the coating material; the distance between the nozzle and the surface of the substrate: 10-20 mm, the specific distance is adjusted according to the size of the substrate and the performance of the spraying equipment; the spraying pressure: 0.2-0.5 MPa, the specific pressure is adjusted according to the nozzle type and the viscosity of the coating solution; Step 33, perform spraying operation: fix the display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the spraying process, and ensure uniform spraying; After spraying is completed, turn off the spraying equipment and remove the substrate; Step 34, perform spin coating operation: carefully place the sprayed display screen substrate on the tray of the spin coater to ensure that the substrate is stable and does not move; start the spin coater, perform coating operation according to the set parameters, observe the distribution of the solution on the surface of the substrate during the rotation process, and ensure that the solution is uniform; after the spin coating is completed, turn off the equipment and take out the substrate; Step 35, post-spin coating treatment: immediately send the spin-coated substrate into an oven for curing treatment to prevent uneven drying of the solution; keep the operating environment clean and dust-free to prevent impurities from contaminating the substrate surface; Step 36: Prepare the oven: Use an oven with temperature control to ensure even temperature distribution; clean the inside of the oven to ensure there is no contamination; Step 37, set the curing parameters: curing temperature: 80-120°C, the specific temperature should be adjusted according to the properties of the coating material and the heat resistance of the substrate; curing time: 10-30 minutes, the specific time should be adjusted according to the size of the substrate and the properties of the solution; Step 38, perform curing operation: carefully place the display screen substrate after spin coating into the oven, ensure that the substrate is placed stably and does not collide; start the oven, perform curing operation according to the set parameters, observe the state of the substrate during the curing process, and ensure that the temperature is uniform; after curing is completed, turn off the oven, and take out the substrate after it cools to room temperature; perform a preliminary visual inspection on the cured substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface.

4. The display screen coating process according to claim 1, characterized in that: The specific steps of the surface treatment in step 4 are as follows: Step 41, prepare an anti-fingerprint treatment agent: select a fluorocarbon resin containing a silane coupling agent as the anti-fingerprint treatment agent, the silane coupling agent enhances the adhesion between the fluorocarbon resin and the coating layer; dilute the anti-fingerprint treatment agent to an appropriate concentration, the specific installation weight ratio is 0.1-0.5%; Step 42, perform spraying operation: fix the cured display screen substrate on the bracket of the spraying equipment, ensure that the substrate is placed stably and does not move; start the spraying equipment, perform spraying operation according to the set parameters, observe the distribution of the treatment agent on the surface of the substrate during the spraying process, and ensure uniform spraying; after the spraying is completed, close the spraying equipment and take out the substrate; Step 43, post-spraying treatment: immediately place the sprayed substrate into an oven for low-temperature curing treatment to prevent the treatment agent from drying too quickly and causing uneven distribution; the low-temperature curing temperature is set at 60-80°C and the curing time is 5-10 minutes; Step 44, preparing an ion beam bombardment device: using an ion beam bombardment device, specifically an ion beam sputtering machine or an ion beam surface modification machine; Step 45, set the ion beam bombardment parameters: bombardment energy: 100-500eV, the specific energy is adjusted according to the properties of the coating material and the tolerance of the substrate; bombardment time: 5-15 minutes, the specific time is adjusted according to the size of the substrate and the intensity of the ion beam; ion beam current density: 0.1-0.5mA / cm 2 , the specific current density is adjusted according to the performance of the equipment and the requirements of the substrate; Step 46, perform ion beam bombardment operation: carefully place the display screen substrate sprayed with anti-fingerprint treatment agent and low-temperature cured in the vacuum chamber of the ion beam bombardment equipment to ensure that the substrate is stable and does not move; evacuate the vacuum chamber to an appropriate vacuum degree, specifically 10 -3 Up to 10 -6 Torr; start the ion beam bombardment equipment, perform the bombardment operation according to the set parameters, observe the state of the substrate during the bombardment process, and ensure that the bombardment is uniform and there is no local overheating; after the bombardment is completed, turn off the equipment and take the substrate out of the vacuum chamber; perform a preliminary visual inspection on the bombarded substrate to ensure that there are no bubbles, cracks or uneven film layers on the surface.

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