Light-transmitting diaphragm, preparation method thereof and display device

Abstract

The invention discloses a light-transmitting diaphragm, a preparation method thereof and a display device, which are used for simultaneously realizing antibacterial, antiviral and anti-fingerprint effects. The embodiment of the invention provides a light-transmitting membrane. The light-transmitting membrane comprises a substrate and a functional layer located on one side of the substrate. The functional layer comprises an anti-fingerprint layer and an antibacterial and antiviral layer which are arranged in a crossed manner in the direction parallel to the plane where the substrate is located; the antibacterial and antiviral layer comprises a polysiloxane group and an antibacterial and antiviral molecular group grafted to the polysiloxane group; the antibacterial and antiviral molecular group comprises a group formed by grafting thiabendazole and / or zinc pyrithione on polysiloxane; the anti-fingerprint layer comprises a polysiloxane group and an anti-fingerprint molecular group grafted to the polysiloxane group; the anti-fingerprint molecular group comprises a group formed by cross-linking polymerization reaction of a perfluoropolyether compound.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a light-transmitting diaphragm, a preparation method thereof and a display device. BACKGROUND

[0002] With the continuous development of display technology, the human-computer interaction demand of intelligent terminal is more and more. Therefore, the display screen surface cannot avoid contacting with the user, and the user touch is easy to grow and breed bacteria, fungi, viruses and the like on the display screen surface; and these bacteria, viruses may form transmission through contacting with the user, and are easy to form a germ pollution source and form contact transmission between different operators. SUMMARY

[0003] The present application provides a light-transmitting diaphragm, a preparation method thereof and a display device, which can realize antibacterial, antiviral and anti-fingerprint at the same time.

[0004] The light-transmitting diaphragm provided by the present application comprises a substrate and a functional layer located on one side of the substrate.

[0005] The functional layer comprises an anti-fingerprint layer and an antibacterial and antiviral layer which are arranged in parallel to the plane direction of the substrate.

[0006] The antibacterial and antiviral layer comprises a polysiloxane group and an antibacterial and antiviral molecular group grafted on the polysiloxane group; the antibacterial and antiviral molecular group comprises a group of thiabendazole and / or pyrithione zinc grafted on the polysiloxane.

[0007] The anti-fingerprint layer comprises a polysiloxane group and an anti-fingerprint molecular group grafted on the polysiloxane group; the anti-fingerprint molecular group comprises a group formed by cross-linking polymerization of a perfluoropolyether compound.

[0008] In some embodiments, the thickness of the anti-fingerprint layer is greater than or equal to 20 nanometers and less than or equal to 40 nanometers.

[0009] The thickness of the antibacterial and antiviral layer is greater than or equal to 90 nanometers and less than or equal to 110 nanometers.

[0010] The dynamic friction coefficient of the functional layer is less than 0.05.

[0011] The water drop angle of the functional layer is greater than 110°.

[0012] The water drop angle of the functional layer after 3000 times of friction of a rubber eraser or 2500 times of friction of steel wool is greater than 100°.

[0013] The water drop angle of the functional layer after being soaked in a simulated sweat solution for 240 hours is greater than 100°.

[0014] In some embodiments, the anti-fingerprint layer is attached to the surface of the substrate by forming silicon-oxygen-silicon chemical bonds through dehydration condensation reaction between polysiloxane groups and silicon-hydroxyl groups on the surface of the substrate;

[0015] The anti-fingerprint layer is attached to the surface of the substrate by forming silicon-oxygen-silicon chemical bonds through dehydration condensation reaction between polysiloxane groups and silicon-hydroxyl groups on the surface of the substrate;

[0016] The silicon-oxygen-silicon chemical bonds formed between the anti-fingerprint layer and the anti-bacterial and anti-viral layer form a reticular polymer structure.

[0017] In some embodiments, the anti-fingerprint layer and the anti-bacterial and anti-viral layer do not overlap in the orthographic projection of the substrate;

[0018] The anti-fingerprint layer and the anti-bacterial and anti-viral layer are in direct contact with the substrate.

[0019] The preparation method of the light-transmitting film provided by the embodiments of the present application comprises:

[0020] A substrate is provided;

[0021] An anti-bacterial and anti-viral solution is provided and stirred uniformly to form an anti-bacterial and anti-viral layer on one side of the substrate; the anti-bacterial and anti-viral solution comprises: a first solvent with a mass fraction of greater than or equal to 2% and less than or equal to 10%, thibendazole with a mass fraction of greater than or equal to 1% and less than or equal to 10%, zinc pyrithione with a mass fraction of greater than or equal to 5% and less than or equal to 12%, polysiloxane with a mass fraction of greater than or equal to 1% and less than or equal to 6%, and a first cosolvent with a mass fraction of greater than or equal to 62% and less than or equal to 88%;

[0022] An anti-bacterial and anti-viral layer is provided and stirred uniformly to form an anti-bacterial and anti-viral layer on one side of the substrate; the anti-bacterial and anti-viral solution comprises: a first solvent with a mass fraction of greater than or equal to 2% and less than or equal to 10%, thibendazole with a mass fraction of greater than or equal to 1% and less than or equal to 10%, zinc pyrithione with a mass fraction of greater than or equal to 5% and less than or equal to 12%, polysiloxane with a mass fraction of greater than or equal to 1% and less than or equal to 6%, and a first cosolvent with a mass fraction of greater than or equal to 62% and less than or equal to 88%;

[0023] An anti-fingerprint solution is provided and stirred uniformly to form an anti-fingerprint group, and the anti-fingerprint solution is coated on the side of the anti-bacterial and anti-viral coating layer away from the substrate to form an anti-fingerprint layer; the anti-fingerprint solution comprises: a perfluoropolyether compound with a mass fraction of greater than or equal to 0.2% and less than or equal to 0.8%, polysiloxane with a mass fraction of greater than or equal to 0.5% and less than or equal to 4%, and a second cosolvent with a mass fraction of greater than or equal to 95.2% and less than or equal to 99.3%; the anti-fingerprint molecular group comprises a perfluoropolyether chain polymer generated by cross-linking reaction of the perfluoropolyether compound after stirring, and the anti-fingerprint molecular group is grafted to the polysiloxane groups provided by the polysiloxane after stirring;

[0024] The anti-fingerprint layer and the antibacterial and antiviral layer are subjected to a baking process, so that the polysiloxane groups in the anti-fingerprint layer and the silicon-hydroxyl groups on the surface of the substrate undergo dehydration condensation reaction, and the polysiloxane groups in the antibacterial and antiviral layer and the polysiloxane groups in the anti-fingerprint layer undergo dehydration condensation reaction, to obtain a functional layer in which the anti-fingerprint layer and the antibacterial and antiviral layer are arranged in a cross pattern.

[0025] In some embodiments, the polysiloxane in the antibacterial and antiviral solution and the polysiloxane in the anti-fingerprint solution are siloxane coupling agents, and the siloxane coupling agents include at least one of the following: methyl vinyl dimethoxy silane, methacryloxy propyl diethoxy silane, vinyl triethoxy silane, methacryloxy propyl triisopropoxy silane.

[0026] In some embodiments, the first co-solvent is an alcohol ether solvent, and includes at least one of the following: propylene glycol methyl ether, water, propylene glycol, ammonium chloride, nitric acid, ethanol.

[0027] In some embodiments, the first solvent is dimethyl sulfoxide; the antibacterial and antiviral solution includes: dimethyl sulfoxide with a mass fraction of 8%, thiabendazole with a mass fraction of 7%, zinc pyrithione with a mass fraction of 12%, siloxane coupling agent with a mass fraction of 6%, and alcohol ether solvent with a mass fraction of 67%.

[0028] In some embodiments, the second co-solvent is a fluorine solvent.

[0029] In some embodiments, the anti-fingerprint solution includes: perfluoropolyether compound with a mass fraction of 0.5%, polysiloxane with a mass fraction of 2%, and fluorine solvent with a mass fraction of 97.5%.

[0030] In some embodiments, the antibacterial and antiviral solution is coated on one side of the substrate, and specifically includes:

[0031] The substrate is placed on a movable platform of a spraying device; the spraying device further includes: a spray head and a pressure tank connected to the spray head; the pressure tank is used to contain the antibacterial and antiviral solution;

[0032] The antibacterial and antiviral solution is extracted from the pressure tank by the spray head and sprayed on one side of the substrate; wherein the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa; the atomization air pressure of the spray head is 0.32 MPa, the total spraying amount of all the spray heads is greater than or equal to 0.4 g / min and less than or equal to 0.6 g / min, and the spraying direction of the spray head is perpendicular to the moving direction of the movable platform.

[0033] In some embodiments, the baking temperature of the baking process performed on the antibacterial and antiviral coating layer is greater than or equal to 165°C and less than or equal to 175°C.

[0034] The baking duration of the baking process performed on the antibacterial and antiviral coating is greater than or equal to 20 minutes and less than or equal to 24 minutes.

[0035] In some embodiments, the anti-fingerprint solution is coated on the side of the antibacterial and antiviral coating away from the substrate, specifically comprising:

[0036] The substrate coated with the antibacterial and antiviral coating is placed on a movable stage of a spraying device; the spraying device further comprises: a spray head and a pressure tank connected with the spray head; the pressure tank is used to contain the anti-fingerprint solution;

[0037] The anti-fingerprint solution is extracted from the pressure tank by the spray head and sprayed to the side of the antibacterial and antiviral layer away from the substrate; wherein the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa; the atomizing air pressure of the spray head is 0.12 MPa, the total spraying amount of all the spray heads is greater than or equal to 11.9 g / min and less than or equal to 12.1 g / min, and the spraying direction of the spray head intersects with the moving direction of the movable stage.

[0038] In some embodiments, the baking temperature of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 165 DEG C and less than or equal to 175 DEG C;

[0039] The baking duration of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 28 minutes and less than or equal to 32 minutes.

[0040] The display device provided by the embodiments of the present application comprises a display panel and a light-transmitting film provided by the embodiments of the present application on the light-emitting side of the display panel.

[0041] In some embodiments, the substrate of the light-transmitting film comprises a glass substrate; the glass substrate is multiplexed as the cover glass on the light-emitting side of the display panel.

[0042] In some embodiments, the substrate further comprises an anti-reflection layer between the glass substrate and the functional layer;

[0043] The anti-reflection layer comprises first anti-reflection sub-layers and second anti-reflection sub-layers arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers is less than the refractive index of the second anti-reflection sub-layers;

[0044] The first anti-reflection sub-layers are silicon oxide and the second anti-reflection sub-layers are silicon nitride;

[0045] The functional layer is in contact with the first anti-reflection sub-layers.

[0046] The light-transmitting diaphragm provided by the embodiment of the present application, the preparation method thereof and the display device, the functional layer includes cross-arranged anti-fingerprint layer and antibacterial and antiviral layer, the anti-fingerprint layer and the antibacterial and antiviral layer both include polysiloxane groups, the anti-fingerprint layer and the antibacterial and antiviral layer can be attached to the substrate through the polysiloxane groups, and a reticular polymerization structure can be formed between the anti-fingerprint layer and the antibacterial and antiviral layer through the polysiloxane groups; thus, the single-layer functional layer can realize the functions of antibacterial and antiviral and anti-fingerprint at the same time, avoiding that the antibacterial and antiviral layer is covered by the anti-fingerprint layer to cause slow release of antibacterial components and failure to realize short-time antibacterial. The anti-fingerprint molecular groups and the antibacterial and antiviral molecular groups are located on the surface of the functional layer away from the substrate, so as to directly contact bacteria and viruses, and have the functions of short-time and efficient antibacterial and antiviral. The poor adhesion caused by the anti-fingerprint layer covering the antibacterial and antiviral layer can also be avoided, and the service life of the anti-fingerprint layer is improved. That is, the light-transmitting diaphragm provided by the embodiment of the present application can realize long-term durable, efficient antibacterial, antiviral and anti-fingerprint functions. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0048] Figure 1 A structural schematic diagram of a light-transmitting diaphragm provided by the embodiment of the present application;

[0049] Figure 2 A schematic diagram of the attachment of each part in a light-transmitting diaphragm provided by the embodiment of the present application through dehydration condensation reaction;

[0050] Figure 3 A structural schematic diagram of another light-transmitting diaphragm provided by the embodiment of the present application;

[0051] Figure 4 A flow schematic diagram of a preparation method of a light-transmitting diaphragm provided by the embodiment of the present application;

[0052] Figure 5 A schematic diagram of a chemical reaction occurring in an antibacterial and antiviral solution provided by the embodiment of the present application;

[0053] Figure 6 A schematic diagram of a chemical reaction occurring in an anti-fingerprint solution provided by the embodiment of the present application;

[0054] Figure 7 A structural schematic diagram of a spraying device provided by the embodiment of the present application;

[0055] Figure 8A structural schematic diagram of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. And the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, if possible. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0057] Unless otherwise defined, technical terms or scientific terms used in the present application should be understood as their common meanings to those of ordinary skill in the art to which the present application belongs. The terms “first”, “second” and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms “include” or “contain” and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0058] It should be noted that the sizes and shapes of the figures in the drawings do not reflect the true proportions, but only serve to illustrate the content of the present application. And the same or similar reference numbers represent the same or similar elements or elements with the same or similar functions throughout.

[0059] In the related art, in order to add the antibacterial and antiviral function on the display product, two film layers are usually formed on the surface of the substrate by vacuum deposition, one is a silicon or fluorine anti-fingerprint layer, and the other is an inorganic or organic carrier-metal complex antibacterial layer, and the dense anti-fingerprint layer covers the antibacterial layer. Such a setting will delay the release speed of the antibacterial ions, and cannot meet the antibacterial requirements of the display product in a short time. And the two film layers thus arranged are incompatible between the anti-fingerprint layer and the antibacterial layer, without obvious chemical bond connection, and the anti-fingerprint layer has poor adhesion, which cannot guarantee the functional life.

[0060] The embodiments of the present application provide a light-transmitting film, as shown in Figure 1 , Figure 2 The light-transmitting film includes a substrate 1 and a functional layer 2 located on one side of the substrate 1.

[0061] The functional layer 2 includes an anti-fingerprint layer 201 and an antibacterial and antiviral layer 202 arranged in cross in a direction parallel to the plane where the substrate 1 is located.

[0062] The antibacterial and antiviral layer 202 comprises a polysiloxane group 2-1 and an antibacterial and antiviral molecular group 2021 grafted on the polysiloxane group 2-1; the antibacterial and antiviral molecular group 2021 comprises a group of thiabendazole and / or zinc pyrithione grafted on polysiloxane;

[0063] The anti-fingerprint layer 201 comprises a polysiloxane group 2-1 and an anti-fingerprint molecular group 2011 grafted on the polysiloxane group 2-1; the anti-fingerprint molecular group 2011 comprises a group formed by crosslinking polymerization of a perfluoropolyether chain polymer.

[0064] The light-transmitting diaphragm provided by the embodiment of the present application comprises the anti-fingerprint layer and the antibacterial and antiviral layer arranged in cross, the anti-fingerprint layer and the antibacterial and antiviral layer both comprise a polysiloxane group, the anti-fingerprint layer and the antibacterial and antiviral layer can be attached to the substrate through the polysiloxane group, and a reticular polymerization structure can be formed between the anti-fingerprint layer and the antibacterial and antiviral layer through the polysiloxane group; thus, the single functional layer can realize the functions of antibacterial, antiviral and anti-fingerprint at the same time, and the problem that the antibacterial and antiviral layer is covered by the anti-fingerprint layer to cause slow release of antibacterial ions and failure to realize short-time antibacterial function can be avoided. The anti-fingerprint molecular group and the antibacterial and antiviral molecular group are located on the surface of the functional layer away from the substrate, so as to directly contact bacteria and viruses and have the functions of short-time and high-efficiency antibacterial and antiviral. The problem of poor adhesion caused by the anti-fingerprint layer covering the antibacterial and antiviral layer can be avoided, and the service life of the anti-fingerprint layer is improved. That is, the light-transmitting diaphragm provided by the embodiment of the present application can realize long-term durable, high-efficiency antibacterial, antiviral and anti-fingerprint functions.

[0065] The antibacterial and antiviral molecular group of the light-transmitting diaphragm provided by the embodiment of the present application comprises a group of thiabendazole and zinc pyrithione, and in the antibacterial and antiviral molecular group, the thiabendazole enters the cell to inhibit polymerization of microtubule protein and synthesis of fumarate reductase, and then hinders bacterial glycolysis and intracellular material transport; the zinc pyrithione makes ions in the cell sap of bacteria lose balance through ion exchange, hinders nutrient transport, inhibits bacterial growth and reproduction, simultaneously generates a large amount of active oxygen, and makes deoxyribo nucleic acid (DNA) and mitochondrial membrane be excessively oxidized and damaged, causes single-strand breakage of DNA, makes it lose replication ability, loses related physiological, biochemical reactions and metabolic activities, and causes bacteria and viruses to die. In summary, the antibacterial and antiviral molecular group comprising thiabendazole and zinc pyrithione in the antibacterial and antiviral layer can effectively resist bacteria and viruses.

[0066] The light-transmitting film provided in the embodiment of the present application has an anti-fingerprint molecular group including a perfluoropolyether chain polymer. The fluorine atoms in the perfluoropolyether chain polymer have a large electronegativity and a small intermolecular attraction. According to the lotus leaf principle, the surface tension of the glass can be reduced to a minimum, and the contact area between dust and the glass surface is reduced by 90%, making it have strong hydrophobicity, anti-oil and anti-fingerprint capabilities.

[0067] In some embodiments, the substrate includes silicon-hydroxyl (Si-OH) groups, so that a functional layer is formed on the surface of the substrate, and the Si-OH groups on the surface of the substrate can undergo a dehydration condensation reaction with the groups included in the functional layer.

[0068] In some embodiments, as Figure 2 As shown, the antibacterial and antiviral layer 202 is attached to the surface of the substrate 1 through a silicon-oxygen-silicon (Si-O-Si) chemical bond formed by a dehydration condensation reaction between the polysiloxane group 2-1 and the silicon-hydroxyl (Si-OH) on the surface of the substrate 1;

[0069] The anti-fingerprint layer 201 is attached to the surface of the substrate 1 through a silicon-oxygen-silicon (Si-O-Si) chemical bond formed by a dehydration condensation reaction between the polysiloxane group 2-1 and the silicon-hydroxyl group on the surface of the substrate 1;

[0070] The anti-fingerprint layer 201 and the antibacterial and antiviral layer 202 form a network polymer structure through silicon-oxygen-silicon (Si—O—Si) chemical bonds formed by dehydration condensation reaction.

[0071] The light-transmitting film provided by the embodiment of the present disclosure, the antibacterial and antiviral layer and the anti-fingerprint layer all include polysiloxane groups, one end of the polysiloxane group includes a hydroxyl group (-OH), and the hydroxyl group reacts with the hydroxyl group on the surface of the substrate through longitudinal dehydration condensation: Si-OH+Si-OH→Si-O-Si+H2O, forming a chemical bond connection structure of Si-O-Si, and the anti-fingerprint layer and the antibacterial and antiviral layer also form a chemical bond connection structure of Si-O-Si through the hydroxyl group on the polysiloxane group thereon. As a result, the formed functional layer has great adhesion, and the anti-fingerprint layer and the antibacterial and antiviral layer also have great adhesion. The functional layer has the characteristics of friction resistance and scratch resistance, and can improve the service life of the functional layer while achieving antibacterial, antiviral and anti-fingerprint properties.

[0072] In some embodiments, the polysiloxane group is formed by a siloxane coupling agent containing carbon-carbon unsaturated double bonds, and the siloxane coupling agent includes at least one of the following: methylvinyldimethoxysilane, methacryloxypropyldiethoxysilane, vinyltriethoxysilane, and methacryloxypropyltriisopropoxysilane.

[0073] In some embodiments, as Figure 1 As shown, the substrate 1 includes a glass substrate 101 .

[0074] In a specific implementation, the glass substrate is tempered glass, and the tempered glass material includes one of alumino-silicate glass, soda-lime-silicate glass, and lithium-alumino-silicate glass.

[0075] In some embodiments, as shown in FIG. 1, the glass substrate 101 is in contact with the functional layer 2. That is, the hydroxyl groups of the functional layer and the hydroxyl groups on the surface of the glass substrate are longitudinally dehydrated and condensed to form a chemical bond connection structure of Si-O-Si. Figure 1 Alternatively, in some embodiments, as shown in FIG. 2, the substrate 1 further includes an anti-glare layer 102 and / or an anti-reflection layer 103 between the glass substrate 101 and the functional layer 2. Thus, the light-transmitting film can have anti-glare and / or anti-reflection functions.

[0076] Figure 3 It should be noted that, in the case where the substrate 1 includes the anti-glare layer 102 and the anti-reflection layer 103, the anti-reflection layer 103 is located between the anti-glare layer 102 and the functional layer 2.

[0077] It should be noted that, as shown in FIG. 3, the surface of the anti-glare layer 102 away from the glass substrate 101 is a rough surface, that is, the surface is a matte reflection surface. The matte reflection surface can achieve a multi-angle diffuse reflection effect, so that when the light-transmitting film is applied to a display product, the viewing angle of the picture can be improved, the interference of ambient light can be reduced, and the problem of glare of the display product under the ambient light source can be solved. Figure 3 In some embodiments, the haze of the anti-glare layer is greater than or equal to 25% and less than or equal to 35%.

[0078] Figure 3 In some embodiments, as shown in FIG. 4, the anti-reflection layer 103 includes a plurality of anti-reflection sub-layers 1031 arranged in a stack; the refractive indexes of adjacent two anti-reflection sub-layers 1031 are different.

[0079] In some embodiments, as shown in FIG. 5, the anti-reflection layer 103 includes first anti-reflection sub-layers 1031-1 and second anti-reflection sub-layers 1031-2 arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers 1031-1 is less than the refractive index of the second anti-reflection sub-layers 1031-2. That is, the materials with high and low refractive indexes are alternately stacked to form the anti-reflection layer, so that when the light is emitted from the less dense film layer to the denser film layer, the reflected light will have a half-wave loss, and the interface reflected light interference will be cancelled out, thereby reducing the reflected light.

[0080] In some embodiments, as shown in FIG. 4, the anti-reflection layer 103 includes a plurality of anti-reflection sub-layers 1031 arranged in a stack; the refractive indexes of adjacent two anti-reflection sub-layers 1031 are different. Figure 3 In some embodiments, as shown in FIG. 5, the anti-reflection layer 103 includes first anti-reflection sub-layers 1031-1 and second anti-reflection sub-layers 1031-2 arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers 1031-1 is less than the refractive index of the second anti-reflection sub-layers 1031-2. That is, the materials with high and low refractive indexes are alternately stacked to form the anti-reflection layer, so that when the light is emitted from the less dense film layer to the denser film layer, the reflected light will have a half-wave loss, and the interface reflected light interference will be cancelled out, thereby reducing the reflected light.

[0081] Figure 3 In some embodiments, as shown in FIG. 5, the anti-reflection layer 103 includes first anti-reflection sub-layers 1031-1 and second anti-reflection sub-layers 1031-2 arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers 1031-1 is less than the refractive index of the second anti-reflection sub-layers 1031-2. That is, the materials with high and low refractive indexes are alternately stacked to form the anti-reflection layer, so that when the light is emitted from the less dense film layer to the denser film layer, the reflected light will have a half-wave loss, and the interface reflected light interference will be cancelled out, thereby reducing the reflected light.

[0082] ​​​In some embodiments, the first anti-reflection sub-layer is silicon oxide (SiO2) and the second anti-reflection sub-layer is silicon nitride (Si3N4).

[0083] In some embodiments, the functional layer is in contact with the first anti-reflection sub-layer. The Si3N4 has a high hardness, which can improve the friction resistance of the film layer, and the SiO2 can provide Si-OH, so that the anti-fingerprint layer, the antibacterial and antiviral layer and the SiO2 layer undergo dehydration condensation reaction to form a chemical bond connection architecture of Si-O-Si, facilitating the adhesion of the anti-fingerprint layer and the antibacterial and antiviral layer.

[0084] In some embodiments, as shown in FIG. 3, the anti-reflection layer 103 includes three first anti-reflection sub-layers 1031-1 and four second anti-reflection sub-layers 1031-2. Figure 3

[0085] In specific implementation, for example, the thickness of the anti-reflection sub-layers in the anti-reflection layer from bottom to top ranges from 5 nanometers (nm) to 9 nm, 9.6 nm to 15.6 nm, 29 nm to 35 nm, 112 nm to 122 nm, 66 nm to 74 nm, 51 nm to 61 nm, and 66 nm to 74 nm.

[0086] In some embodiments, the transmittance of the light-transmitting film including the anti-reflection layer is less than or equal to 1%.

[0087] In some embodiments, as shown in FIG. 2, the thickness of the anti-fingerprint layer 201 is less than the thickness of the antibacterial and antiviral layer 202. Figure 1

[0088] In some embodiments, the thickness of the anti-fingerprint layer is greater than or equal to 20 nanometers and less than or equal to 40 nanometers.

[0089] The thickness of the antibacterial and antiviral layer is greater than or equal to 90 nanometers and less than or equal to 110 nanometers.

[0090] In some embodiments, the dynamic friction coefficient of the functional layer is less than 0.05. Thus, the touch smoothness of the functional layer can be improved.

[0091] In some embodiments, the water drop angle of the anti-fingerprint layer is greater than 110°. Thus, the hydrophobic and oleophobic effects of the anti-fingerprint layer can be ensured, and the anti-fingerprint performance can be improved.

[0092] In some embodiments, the functional layer also needs to meet the following requirements:

[0093] The water drop angle of the functional layer is greater than 100° after 3000 times of friction with a rubber eraser or 2500 times of friction with steel wool.

[0094] ​​The water drop angle of the functional layer after being soaked in the pseudo-sweat solution for 240 hours is greater than 100°.

[0095] Therefore, the anti-fingerprint durability of the light-transmitting film provided by the embodiment of the present application can be improved, and the service life of the light-transmitting film is further improved.

[0096] Based on the same inventive concept, the embodiment of the present application further provides a preparation method of a light-transmitting film, as shown in the following. Figure 4 As shown in the following.

[0097] S101, providing a substrate;

[0098] S102, providing an antibacterial and antiviral solution and stirring uniformly, coating the antibacterial and antiviral solution on one side of the substrate to form an antibacterial and antiviral layer; the antibacterial and antiviral solution comprises: a first solvent with a mass fraction greater than or equal to 2% and less than or equal to 10%, thibendazole with a mass fraction greater than or equal to 1% and less than or equal to 10%, zinc pyrithione with a mass fraction greater than or equal to 5% and less than or equal to 12%, polysiloxane with a mass fraction greater than or equal to 1% and less than or equal to 6%, and a first cosolvent with a mass fraction greater than or equal to 62% and less than or equal to 88%;

[0099] S103, performing an oven process on the antibacterial and antiviral layer, so that the thibendazole and / or zinc pyrithione in the antibacterial and antiviral layer are grafted to the polysiloxane groups provided by the polysiloxane to form antibacterial and antiviral molecular groups, and the polysiloxane groups are dehydrated and condensed with the silicon-hydroxyl groups on the surface of the substrate;

[0100] S104, providing an anti-fingerprint solution, stirring uniformly to form anti-fingerprint groups, coating the anti-fingerprint solution on the side of the antibacterial and antiviral coating away from the substrate to form an anti-fingerprint layer; the anti-fingerprint solution comprises: a perfluoropolyether compound with a mass fraction greater than or equal to 0.2% and less than or equal to 0.8%, polysiloxane with a mass fraction greater than or equal to 0.5% and less than or equal to 4%, and a second cosolvent with a mass fraction greater than or equal to 95.2% and less than or equal to 99.3%; the anti-fingerprint molecular groups comprise perfluoropolyether chain polymers generated by cross-linking reaction of the perfluoropolyether compound after stirring, and the anti-fingerprint molecular groups are grafted to the polysiloxane groups provided by the polysiloxane after stirring;

[0101] S105, performing an oven process on the antibacterial and antiviral layer and the anti-fingerprint layer, so that the polysiloxane groups in the anti-fingerprint layer are dehydrated and condensed with the silicon-hydroxyl groups on the surface of the substrate, and the polysiloxane groups of the antibacterial and antiviral layer and the polysiloxane groups of the anti-fingerprint layer are dehydrated and condensed, to obtain a functional layer in which the anti-fingerprint layer and the antibacterial and antiviral layer are cross arranged.

[0102] The preparation method of the light-transmitting diaphragm provided in the embodiments of the present application is characterized in that the anti-fingerprint layer and the anti-bacteria and virus layer both include polysiloxane groups, the anti-fingerprint molecular groups, the anti-bacteria and virus, even if the anti-bacteria and virus solution is coated first and then the anti-fingerprint solution is coated, the anti-fingerprint solution and the anti-bacteria and virus solution can be attached to the substrate through the polysiloxane groups in the baking process, the anti-fingerprint layer and the anti-bacteria and virus layer can be arranged at intervals, and a reticular polymerization structure can be formed between the anti-fingerprint layer and the anti-bacteria and virus layer through the polysiloxane groups; thus, a single functional layer can realize the functions of anti-bacteria, anti-virus and anti-fingerprint at the same time, the anti-bacteria and virus layer is prevented from being covered by the anti-fingerprint layer to cause slow release of the anti-bacteria component and failure to realize short-time anti-bacteria. The anti-fingerprint molecular groups and the anti-bacteria and virus molecular groups are located on the side of the polysiloxane away from the substrate, so as to directly contact bacteria and viruses and have the functions of short-time and high-efficiency anti-bacteria and anti-virus. The poor adhesion caused by the anti-fingerprint layer covering the anti-bacteria and virus layer is also avoided, and the service life of the anti-fingerprint layer is improved. That is, the light-transmitting diaphragm provided in the embodiments of the present application can realize long-term durable, high-efficiency anti-bacteria, anti-virus and anti-fingerprint functions.

[0103] In some embodiments, the first solvent is dimethyl sulfoxide.

[0104] In the preparation method of the light-transmitting diaphragm provided in the embodiments of the present application, in the anti-bacteria and virus solution, thiabendazole enters the cell to inhibit the polymerization of tubulin and the synthesis of fumarate reductase, and then hinders bacterial glycolysis and intracellular material transport; zinc pyrithione makes the ions in the bacterial cell sap lose balance through ion exchange, hinders nutrient transport, inhibits bacterial growth and reproduction, and at the same time generates a large amount of active oxygen, so that deoxyribo nucleic acid (DNA) and mitochondrial membranes are excessively oxidized and damaged, causing single-strand breakage of DNA, loss of replication ability, loss of related physiological, biochemical reactions and metabolic activities, and death of bacteria and viruses. In summary, the anti-bacteria and virus molecular groups formed by the cross-linking polymerization reaction of dimethyl sulfoxide, thiabendazole and zinc pyrithione included in the anti-bacteria and virus layer can effectively resist bacteria and viruses.

[0105] In some embodiments, the polysiloxane in the anti-bacteria and virus solution and the polysiloxane in the anti-fingerprint solution are siloxane coupling agents, and the siloxane coupling agents include at least one of the following: methyl vinyl dimethoxy silane, methyl acryloyloxy propyl diethoxy silane, vinyl triethoxy silane, and methyl acryloyloxy propyl triisopropoxy silane.

[0106] In some embodiments, the first auxiliary solvent is an alcohol ether solvent, and includes at least one of the following: propylene glycol methyl ether, water, propylene glycol, ammonium chloride, nitric acid and ethanol.

[0107] It should be noted that the schematic diagram of the reaction of the alcohol ether solvent, the silane coupling agent, the dimethyl sulfoxide, the thiabendazole, and the zinc pyrithione to generate the anti-bacterial and anti-viral group is shown in Figure 5 ; wherein AM represents the thiabendazole and the zinc pyrithione, Y and R represent other groups in the silane coupling agent.

[0108] In some embodiments, the anti-bacterial and anti-viral solution comprises: dimethyl sulfoxide with a mass fraction of 8%, thiabendazole with a mass fraction of 7%, zinc pyrithione with a mass fraction of 12%, a silane coupling agent with a mass fraction of 6%, and an alcohol ether solvent with a mass fraction of 67%.

[0109] In some embodiments, the second co-solvent is a fluorine solvent.

[0110] In specific implementation, the anti-fingerprint solution comprising the perfluoropolyether compound, the silane coupling agent, and the fluorine solvent is fully stirred to generate a cross-linking polymerization reaction, form a perfluoropolyether chain polymer, and modify the perfluoropolyether chain to open an end of the perfluoropolyether chain and graft the perfluoropolyether chain to the polysiloxane.

[0111] It should be noted that the schematic diagram of the reaction of the fluorine solvent, the silane coupling agent, and the perfluoropolyether compound to generate the anti-fingerprint group is shown in Figure 6 ; wherein X represents other groups in the silane coupling agent, A represents other groups in the perfluoropolyether compound, and B represents the perfluoropolyether chain polymer.

[0112] In some embodiments, the anti-fingerprint solution comprises: a perfluoropolyether compound with a mass fraction of 0.5%, a silane coupling agent with a mass fraction of 2%, and a fluorine solvent with a mass fraction of 97.5%.

[0113] The ratio of each component in the antibacterial and antiviral solution can achieve better antibacterial and antiviral effect, and the ratio of each component in the anti-fingerprint solution can achieve better anti-fingerprint effect. The experimental results are shown in Table 1. For test sample 1, there is no dimethyl sulfoxide and thiabendazole in the antibacterial and antiviral solution, and the content of zinc pyrithione is too high, so that the obtained antibacterial and antiviral solution is turbid, yellow oil is precipitated, which is easy to contaminate the equipment pipeline, and the sample is not prepared, which is determined as unqualified; part of the zinc pyrithione is not grafted on the silane coupling agent in the fluorescence analysis part, which leads to the turbidity of the antibacterial and antiviral solution, and the precipitated material is part of the zinc pyrithione. In test sample 2, the content of perfluoropolyether compound in the anti-fingerprint solution is too high, and after spraying and baking, part of the anti-fingerprint coating is attached to the antibacterial and antiviral coating, and part of the perfluoropolyether compound in the anti-fingerprint coating is not grafted on the silane coupling agent, which leads to the appearance of oil stain on the surface of the sample which cannot be cleaned, affecting the appearance, and is determined as unqualified. In test sample 3, the content of silane coupling agent is too low, which leads to poor adhesion of the film layer, short duration of antibacterial and antiviral function, and the content of perfluoropolyether compound is too low, the anti-fingerprint coating is sparse, the initial water drop angle is less than 110°, and the anti-fingerprint performance is poor. Test sample 4 meets the ratio of each component in the antibacterial and antiviral solution and the ratio of each component in the anti-fingerprint solution, the initial water drop angle is ≥100°, the antibacterial rate is >99%, the antiviral rate is >90%, and high-efficiency antibacterial, antiviral and anti-fingerprint functions can be achieved.

[0114] Table 1

[0115]

[0116] In some embodiments, the antibacterial and antiviral solution is coated on one side of the substrate, specifically comprising:

[0117] The substrate is placed on a movable platform of a spraying device; the spraying device further comprises a spray head and a pressure tank connected with the spray head; the pressure tank is used to contain the antibacterial and antiviral solution;

[0118] The antibacterial and antiviral solution is extracted from the pressure tank by the spray head and sprayed on one side of the substrate; wherein the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa; the atomizing air pressure of the spray head is 0.32 MPa, the total spraying amount of all spray heads is greater than or equal to 0.4 g / min and less than or equal to 0.6 g / min, and the spraying direction of the spray head intersects with the moving direction of the movable platform.

[0119] The preparation method of the light-transmitting film provided by the embodiments of the present application is characterized in that the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa, the atomizing air pressure of the spray head is 0.32 MPa, and the total spraying amount of all the spray heads is greater than or equal to 0.4 g / min and less than or equal to 0.6 g / min, so that the antibacterial and antiviral solution can be uniformly and dispersedly sprayed on the surface of the substrate, and the substrate surface is left with sufficient Si-OH groups, facilitating the subsequent attachment of the anti-fingerprint coating solution.

[0120] In some embodiments, as shown in FIG. 1, the movable platform includes a belt, and the substrate is placed on the belt with the film-coated surface facing upward. Figure 7 In the antibacterial and antiviral solution spraying process, the belt moves at a speed of 650 mm / min in the y direction. Two spray heads are arranged side by side in the x direction, with a distance of 1 cm between the two spray heads, and are arranged 30 cm above the substrate. The two spray heads move back and forth in the x direction at a speed of 1400 mm / s. The spraying amount of a single spray head is greater than or equal to 0.2 g / min and less than or equal to 0.3 g / min. After the antibacterial and antiviral coating is sprayed, the substrate is baked in a tunnel furnace along the belt.

[0121] In some embodiments, the baking temperature of the baking process performed on the antibacterial and antiviral coating is greater than or equal to 165°C and less than or equal to 175°C.

[0122] The baking time of the baking process performed on the antibacterial and antiviral coating is greater than or equal to 20 min and less than or equal to 24 min.

[0123] In some embodiments, an anti-fingerprint solution is applied to the side of the antibacterial and antiviral coating away from the substrate, specifically including:

[0124] The substrate coated with the antibacterial and antiviral coating is placed on a movable platform of a spraying device; the spraying device further includes a spray head and a pressure tank connected to the spray head; the pressure tank is used to contain the anti-fingerprint solution.

[0125] The anti-fingerprint solution is extracted from the pressure tank by the spray head and sprayed to the side of the antibacterial and antiviral layer away from the substrate; wherein the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa. The atomizing air pressure of the spray head is 0.12 MPa, the total spraying amount of all the spray heads is greater than or equal to 11.9 g / min and less than or equal to 12.1 g / min, and the spraying direction of the spray head intersects with the moving direction of the movable platform.

[0126] The preparation method of the light-transmitting film provided in the embodiments of the present application is characterized in that the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa. The atomizing air pressure of the spray head is 0.12 MPa, and the total spraying amount of all the spray heads is greater than or equal to 11.9 g / min and less than or equal to 12.1 g / min. The above spraying process parameters can ensure that the anti-fingerprint solution is uniformly dispersed between the gaps of the antibacterial and antiviral layers, and ensure that the anti-fingerprint layer and the antibacterial and antiviral layer are not overlapped.

[0127] In some embodiments, as shown in Figure 7 The movable platform includes a belt, and the film-coated surface of the substrate forming the antibacterial and antiviral layer is placed upward on the carrier, and the carrier is placed on the belt. In the anti-fingerprint solution spraying process, the belt moves at a speed of 650 mm / min in the y direction. Two spray heads are arranged side by side in the x direction, and the distance between the two spray heads is 1 cm. The two spray heads are arranged 30 cm above the substrate. The two spray heads move back and forth in the x direction at a speed of 1400 mm / s. The spraying amount of a single spray head is greater than or equal to 5.95 g / min and less than or equal to 6.005 g / min. Then the substrate is baked in a tunnel furnace along the belt.

[0128] In some embodiments, the baking temperature of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 165°C and less than or equal to 175°C;

[0129] The baking time of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 28 minutes and less than or equal to 32 minutes.

[0130] Next, the influence of the process parameters in the preparation method of the light-transmitting film provided in the embodiments of the present application on the light-transmitting film is introduced. As shown in Table 2. For process parameter 1, the anti-fingerprint solution spraying amount is too much, resulting in a dense antibacterial and antiviral layer, a fog-like appearance, and obvious graininess, which is determined to be unqualified. For process parameter 2, the anti-fingerprint solution spraying amount is too much, and part of the anti-fingerprint layer covers the antibacterial and antiviral layer, resulting in oil stains on the surface of the sample that cannot be cleaned, affecting the appearance, and is determined to be unqualified. For process parameter 3, the anti-fingerprint solution spraying amount is too much, the antibacterial and antiviral layer is arranged densely, the smoothness is poor, the dynamic friction coefficient is greater than or equal to 0.105 (the requirement is less than 0.05), and part of the anti-fingerprint layer does not adhere to the surface of the substrate, resulting in deviation of the anti-fingerprint layer friction resistance, which is determined to be unqualified. Process parameter 4 meets the spraying process parameters required in the embodiments of the present application, and the antibacterial effect, the initial water droplet angle, and the water droplet angle after friction all meet the requirements, and the efficient, long-lasting antibacterial, antiviral, and anti-fingerprint functions can be achieved. It should be noted that the water droplet angle after friction is the water droplet angle of the tested sample after 2500# steel wool friction.

[0131] Table 2

[0132]

[0133] Next, other test results of the light-transmitting film prepared by the preparation method of the light-transmitting film provided in the present application are introduced. The performance of the light-transmitting film is shown in Table III. The appearance of the light-transmitting film is normal. In the mechanical performance parameters, the greater the surface compressive stress and the greater the surface compressive stress depth, the better the strengthening performance of the light-transmitting film; the greater the four-point bending strength, the better the bending resistance of the light-transmitting film; the greater the falling ball strength, the better the impact resistance of the light-transmitting film; the greater the surface hardness, the better the scratch resistance of the light-transmitting film; the smaller the warpage, the easier the assembly when the light-transmitting film is attached to other products; according to Table III, the above-mentioned mechanical properties are in a better range, which is better than that of the light-transmitting film prepared by the traditional preparation method. In the optical performance of the light-transmitting film, the transmittance can reach 92.5%, and the reflectance is as low as 4.14%. Compared with the transmittance (about 88.4%) and reflectance (about 4.23%) of the light-transmitting film prepared by the traditional preparation method, the transmittance of the light-transmitting film prepared by the preparation method of the present application is greatly improved, and the reflectance is reduced. When the light-transmitting film is applied to a display product, the display effect of the display product can be improved. Regarding the color deviation parameters, a needs to be greater than -0.5 and less than 0.5, and b needs to be greater than -0.5 and less than 0.5. A less than -0.5 will cause a green deviation problem, a greater than 0.5 will cause a red deviation problem, b less than -0.5 will cause a blue deviation problem, and b greater than 0.5 will cause a yellow deviation problem. The color deviation parameters of the light-transmitting film prepared by the preparation method of the present application meet the requirements, and when the light-transmitting film is applied to a display product, the display effect will not be affected.

[0134] Table III

[0135]

[0136] In addition, based on the product use scenario, the light-transmitting film is also tested for durability under more conditions. The light-transmitting film has an antibacterial rate of >99% against conventional pathogenic bacteria such as Escherichia coli and Staphylococcus aureus, and an antiviral rate of >90% against conventional pathogenic viruses such as H1N1 and H3N2 after 2 years. After the light-transmitting film is subjected to high-temperature storage test, low-temperature storage test, UV radiation test, simulated surface cleaning test, and artificial skin scratch resistance test in sequence, the antibacterial rate against conventional pathogenic bacteria such as Escherichia coli and Staphylococcus aureus is >99%, and the antiviral rate against conventional pathogenic viruses such as H1N1 and H3N2 is >90%.

[0137] In some embodiments, providing a substrate includes:

[0138] A glass substrate is provided.

[0139] In a specific implementation, for example, the glass substrate is tempered glass, and the tempered glass material includes one of aluminosilicate glass, soda-lime silicate glass, and lithium aluminosilicate glass.

[0140] In some embodiments, the providing the substrate further includes performing plasma cleaning on the surface of the glass substrate.

[0141] The anti-bacterial and anti-virus solution is coated on one side of the substrate to form an anti-bacterial and anti-virus layer, and the coating specifically includes:

[0142] The anti-bacterial and anti-virus solution is coated on the surface of the glass substrate subjected to the ion cleaning to form the anti-bacterial and anti-virus layer.

[0143] That is, the glass substrate is in contact with the anti-bacterial and anti-virus layer and is subsequently in contact with the anti-fingerprint layer. Therefore, the hydroxyl groups of the functional layer and the hydroxyl groups on the surface of the glass substrate are vertically dehydrated and condensed to form a chemical bond connection structure of Si-O-Si.

[0144] The preparation method of the light-transmitting diaphragm provided in the embodiments of the present application performs plasma cleaning on the surface of the glass substrate, so that impurities or moisture on the surface of the glass substrate can be removed, and the glass surface is activated to form more hydroxyl groups, facilitating the attachment of the functional film layer formed subsequently.

[0145] In some embodiments, the providing the substrate further includes:

[0146] The anti-glare layer is formed by performing anti-glare treatment on one side of the glass substrate.

[0147] In some embodiments, the anti-glare treatment performed on one side of the glass substrate specifically includes:

[0148] The surface of the glass substrate is corroded into a rough surface by 100% hydrofluoric acid;

[0149] The tips of the rough surface are polished by a solution of hydrofluoric acid with a mass fraction ranging from 3% to 6% and water with a mass fraction ranging from 97% to 94%.

[0150] The preparation method of the light-transmitting diaphragm provided in the embodiments of the present application performs anti-glare treatment to form an anti-glare layer with a matte reflection surface, which can achieve the effect of multi-angle diffuse reflection, so that when the light-transmitting diaphragm is applied to a display product, the viewing angle of the picture can be improved, the interference of ambient light can be reduced, and the problem of glare of the display product under the ambient light source can be solved.

[0151] In some embodiments, the providing the substrate further includes:

[0152] A plurality of anti-reflection sub-layers are sequentially stacked on the surface of the anti-glare layer away from the glass substrate to form an anti-reflection layer, and the refractive indexes of the adjacent two anti-reflection sub-layers are different.

[0153] In some embodiments, the anti-reflection layer comprises first anti-reflection sub-layers and second anti-reflection sub-layers arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers is less than the refractive index of the second anti-reflection sub-layers. That is, the materials with high and low refractive indices are alternately stacked to form the anti-reflection layer, so that when light is emitted from the low-refractive film layer to the high-refractive film layer, the reflected light will have a half-wave loss, the interface reflected light will interfere and cancel out, thereby reducing the reflected light, and the reflectivity of the light-transmitting film sheet can be reduced.

[0154] In some embodiments, the first anti-reflection sub-layers are silicon oxide (SiO2), and the second anti-reflection sub-layers are silicon nitride (Si3N4). The Si3N4 has high hardness, which can improve the friction resistance of the film layer, and the SiO2 can provide Si-OH, so that the anti-fingerprint layer, the antibacterial and antiviral layer and the SiO2 layer undergo dehydration condensation reaction to form a Si-O-Si chemical bond connection architecture, facilitating the adhesion of the anti-fingerprint layer and the antibacterial and antiviral layer.

[0155] Based on the same inventive concept, the embodiments of the present application also provide a display device, as shown in Figure 8 The display device comprises a display panel 3 and a light-transmitting film sheet 4 provided by the embodiments of the present application on the light-emitting side of the display panel 3.

[0156] In some embodiments, the light-transmitting film sheet comprises a glass substrate.

[0157] In some embodiments, the light-transmitting film sheet further comprises an anti-glare layer and / or an anti-reflection layer between the glass substrate and the functional layer. For details, please refer to the part of the light-transmitting film sheet provided by the embodiments of the present application, which will not be described here.

[0158] The display device provided by the embodiments of the present application, when the light-transmitting film sheet comprises an anti-glare layer, the surface of the anti-glare layer away from the glass substrate is a rough surface, that is, the surface is a matte reflection surface, which can achieve the effect of multi-angle diffuse reflection. The viewing angle of the display device can be improved, the interference of ambient light can be reduced, and the problem of glare of the display product under the ambient light source can be solved.

[0159] The display device provided by the embodiments of the present application, when the light-transmitting film sheet comprises an anti-reflection layer, and the anti-reflection layer comprises first anti-reflection sub-layers and second anti-reflection sub-layers arranged in an alternating stack, the materials with high and low refractive indices are alternately stacked to form the anti-reflection layer, so that when light is emitted from the low-refractive film layer to the high-refractive film layer, the reflected light will have a half-wave loss, the interface reflected light will interfere and cancel out, thereby reducing the reflected light of the display device.

[0160] In some embodiments, the light-transmitting film sheet serves as a cover plate on the light-emitting side of the display panel.

[0161] In some embodiments, the substrate of the light-transmitting film includes a glass substrate reused as a cover glass on the light-outgoing side of the display panel. Thus, the thickness of the display device can be avoided from being increased.

[0162] In some embodiments, the display panel is an electroluminescent display panel. The electroluminescent display panel is, for example, an organic light-emitting diode display panel or a quantum dot light-emitting diode display panel, etc.

[0163] Alternatively, in some embodiments, the display panel is a liquid crystal display panel.

[0164] In some embodiments, when the display panel is a liquid crystal display panel, as shown in Figure 8 As shown, the display device further includes a backlight module 5 on the side of the display panel 3 away from the light-transmitting film 4, an optical adhesive 6 between the display panel 3 and the light-transmitting film 4, a border adhesive 7 on the side surface of the display panel 3 and the backlight module 5, and a slit adhesive between the display panel 3 and the backlight module 5. The display panel 3 is on the light-outgoing side of the backlight module 5, and the display panel 3 and the light-transmitting film 4 are bonded by the optical adhesive 6.

[0165] The display device provided by the embodiments of the present application is any product or component with display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc. Other essential components of the display device should be understood by those skilled in the art and are not described herein again, nor should they be considered as limitations on the present application. The implementation of the display device can refer to the above-described embodiments of the display panel, and the repeated parts are not described again.

[0166] In summary, the light-transmitting film, the preparation method thereof, and the display device provided by the embodiments of the present application have the following advantages. The functional layer includes the anti-fingerprint layer and the antibacterial and antiviral layer arranged in cross, the anti-fingerprint layer and the antibacterial and antiviral layer both include polysiloxane groups, the anti-fingerprint layer and the antibacterial and antiviral layer can be attached to the substrate through the polysiloxane groups, and the anti-fingerprint layer and the antibacterial and antiviral layer can be attached through the polysiloxane groups. Thus, a single functional layer can realize the functions of antibacterial and antiviral and anti-fingerprint, avoiding that the antibacterial and antiviral layer is covered by the anti-fingerprint layer to cause slow release of antibacterial ions and failure to realize short-time antibacterial. The anti-fingerprint molecular groups and the antibacterial and antiviral molecular groups are located on the surface of the functional layer away from the substrate, so as to directly contact bacteria and viruses and have the functions of short-time and efficient antibacterial and antiviral. The poor adhesion caused by the anti-fingerprint layer covering the antibacterial and antiviral layer can be avoided, and the service life of the anti-fingerprint layer is improved. That is, the light-transmitting film provided by the embodiments of the present application can realize long-term durable, efficient antibacterial, antiviral, and anti-fingerprint functions.

[0167] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that the appended claims include all such modifications and variations as fall within the scope of the present application.

[0168] It is apparent that many modifications and variations of this application can be effected although only a few have been chosen for purposes of disclosure. Thus, it is intended that this application include all such modifications and variations as fall within the scope of the claims and their equivalents.

Claims

1. A light-transmitting diaphragm, characterized by The light-transmitting diaphragm comprises a substrate and a functional layer on one side of the substrate; The functional layer comprises an anti-fingerprint layer and an antibacterial and antiviral layer arranged in parallel to the substrate; The antibacterial and antiviral layer comprises a polysiloxane group and an antibacterial and antiviral molecular group grafted to the polysiloxane group; the antibacterial and antiviral molecular group comprises a group grafted to polysiloxane by thiabendazole and / or zinc pyrithione; The anti-fingerprint layer comprises a polysiloxane group and an anti-fingerprint molecular group grafted to the polysiloxane group; the anti-fingerprint molecular group comprises a group formed by cross-linking polymerization of a perfluoropolyether compound.

2. The light-transmissive membrane of claim 1, wherein, The thickness of the anti-fingerprint layer is greater than or equal to 20 nanometers and less than or equal to 40 nanometers; The thickness of the antibacterial and antiviral layer is greater than or equal to 90 nanometers and less than or equal to 110 nanometers; The dynamic friction coefficient of the functional layer is less than 0.05; The water drop angle of the functional layer is greater than 110°; The water drop angle of the functional layer after being rubbed by a rubber eraser 3000 times or by steel wool 2500 times is greater than 100°; The water drop angle of the functional layer after being immersed in a simulated sweat solution for 240 hours is greater than 100°.

3. The light-transmissive membrane of claim 1 or 2, wherein The antibacterial and antiviral layer is attached to the surface of the substrate by dehydration condensation reaction between the polysiloxane group and the silicon-hydroxyl on the surface of the substrate to form a silicon-oxygen-silicon chemical bond; The anti-fingerprint layer is attached to the surface of the substrate by dehydration condensation reaction between the polysiloxane group and the silicon-hydroxyl on the surface of the substrate to form a silicon-oxygen-silicon chemical bond; The silicon-oxygen-silicon chemical bond generated by dehydration condensation reaction between the anti-fingerprint layer and the antibacterial and antiviral layer forms a reticular polymerization structure.

4. The light-transmissive membrane of claim 1 or 2, wherein The anti-fingerprint layer and the antibacterial and antiviral layer do not overlap in the orthographic projection on the substrate; The anti-fingerprint layer and the antibacterial and antiviral layer are in direct contact with the substrate.

5. A method of making a light-transmitting diaphragm, characterized by The method comprises: providing a substrate; providing an antibacterial and antiviral solution and stirring it uniformly to form an antibacterial and antiviral layer on one side of the substrate; the antibacterial and antiviral solution comprises a first solvent with a mass fraction greater than or equal to 2% and less than or equal to 10%, thiabendazole with a mass fraction greater than or equal to 1% and less than or equal to 10%, zinc pyrithione with a mass fraction greater than or equal to 5% and less than or equal to 12%, polysiloxane with a mass fraction greater than or equal to 1% and less than or equal to 6%, and a first cosolvent with a mass fraction greater than or equal to 62% and less than or equal to 88%; subjecting the antibacterial and antiviral layer to a baking process so that the thiabendazole and / or the zinc pyrithione in the antibacterial and antiviral layer are grafted to the polysiloxane group provided by the polysiloxane to form an antibacterial and antiviral molecular group, and the polysiloxane group undergoes dehydration condensation reaction with the silicon-hydroxyl on the surface of the substrate; Providing an anti-fingerprint solution, stirring it evenly to form anti-fingerprint groups, and applying the anti-fingerprint solution on the side of the antibacterial and antiviral coating facing away from the substrate to form an anti-fingerprint layer; the anti-fingerprint solution comprises: a perfluoropolyether compound having a mass fraction greater than or equal to 0.2% and less than or equal to 0.8%, a polysiloxane having a mass fraction greater than or equal to 0.5% and less than or equal to 4%, and a second co-solvent having a mass fraction greater than or equal to 95.2% and less than or equal to 99.3%; the anti-fingerprint molecular groups comprise a perfluoropolyether chain polymer generated by a cross-linking reaction of the perfluoropolyether compound after stirring, and after stirring, the anti-fingerprint molecular groups are grafted to the polysiloxane groups provided by the polysiloxane; The antibacterial and antiviral layer and the anti-fingerprint layer are subjected to a baking process, so that the polysiloxane groups in the anti-fingerprint layer undergo a dehydration condensation reaction with the silicon-hydroxyl groups on the surface of the substrate, and the polysiloxane groups in the antibacterial and antiviral layer and the polysiloxane groups in the anti-fingerprint layer undergo a dehydration condensation reaction, thereby obtaining a functional layer in which the anti-fingerprint layer and the antibacterial and antiviral layer are cross-arranged.

6. The method of claim 5, wherein, The polysiloxane in the antibacterial and antiviral solution and the polysiloxane in the anti-fingerprint solution are siloxane coupling agents, and the siloxane coupling agent includes at least one of the following: methylvinyldimethoxysilane, methacryloxypropyldiethoxysilane, vinyltriethoxysilane, and methacryloxypropyltriisopropoxysilane.

7. The method according to claim 5 or 6, characterized in that, The first co-solvent is an alcohol ether solvent, including at least one of the following: propylene glycol methyl ether, water, propylene glycol, ammonium chloride, nitric acid, and ethanol.

8. The method of claim 7, wherein, The first solvent is dimethyl sulfoxide; the antibacterial and antiviral solution comprises: 8% by mass of dimethyl sulfoxide, 7% by mass of thiabendazole, 12% by mass of zinc pyrithione, 6% by mass of the siloxane coupling agent, and 67% by mass of the alcohol ether solvent.

9. The method according to any of claims 5 to 6, 8, characterized in that, The second co-solvent is a fluorine solvent.

10. The method of claim 9, wherein, The anti-fingerprint solution comprises: 0.5% by mass of a perfluoropolyether compound, 2% by mass of the polysiloxane, and 97.5% by mass of the fluorine solvent.

11. The method according to any one of claims 5 to 6, 8, 10, characterized in that, Coating the antibacterial and antiviral solution on one side of the substrate specifically comprises: The substrate is placed on a movable platform of a spraying device; the spraying device further comprises: a spray head and a pressure tank connected to the spray head; the pressure tank is used to contain the antibacterial and antiviral solution; The antibacterial and antiviral solution is extracted from the pressure tank by the nozzle and sprayed onto one side of the substrate; wherein, the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa; the atomization air pressure of the nozzle is 0.32 MPa, the total spraying amount of all the nozzles for spraying is greater than or equal to 0.4 g / min and less than or equal to 0.6 g / min, and the spraying direction of the nozzle is intersected with the moving direction of the movable carrier.

12. The method of claim 11, wherein, The baking temperature of the baking process for the antibacterial and antiviral coating is greater than or equal to 165° C. and less than or equal to 175° C.; The baking duration of the baking process performed on the antibacterial and antiviral coating is greater than or equal to 20 minutes and less than or equal to 24 minutes.

13. The method according to any of claims 5 to 6, 8, 10, characterized in that, The antibacterial and antiviral coating is coated with the anti-fingerprint solution on the side away from the substrate, specifically comprising: The substrate coated with the antibacterial and antiviral coating is placed on a movable stage of a spraying device; the spraying device further comprises: a spray head and a pressure tank connected with the spray head; the pressure tank is used to contain the anti-fingerprint solution; The anti-fingerprint solution is extracted from the pressure tank by the spray head and sprayed to the side of the antibacterial and antiviral layer away from the substrate; wherein the air pressure of the pressure tank is greater than or equal to 0.1 MPa and less than or equal to 0.5 MPa; the atomizing air pressure of the spray head is 0.12 MPa, the total spraying amount of all the spray heads is greater than or equal to 11.9 g / min and less than or equal to 12.1 g / min, and the spraying direction of the spray head intersects with the moving direction of the movable stage.

14. The method of claim 13, wherein, The baking temperature of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 165°C and less than or equal to 175°C; The baking duration of the baking process performed on the antibacterial and antiviral coating and the anti-fingerprint layer is greater than or equal to 28 minutes and less than or equal to 32 minutes.

15. A display device comprising: The display device comprises a display panel and the light-transmitting film sheet according to any one of claims 1-4 located on the light-emitting side of the display panel.

16. The display device of claim 15, wherein, The substrate of the light-transmitting film sheet comprises a glass substrate; the glass substrate is multiplexed as a cover glass on the light-emitting side of the display panel.

17. The display device of claim 16, wherein, The substrate further comprises an anti-reflection layer between the glass substrate and the functional layer; The anti-reflection layer comprises first anti-reflection sub-layers and second anti-reflection sub-layers arranged in an alternating stack; the refractive index of the first anti-reflection sub-layers is less than that of the second anti-reflection sub-layers; The first anti-reflection sub-layers are silicon oxide and the second anti-reflection sub-layers are silicon nitride; The functional layer is in contact with the first anti-reflection sub-layers.

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