Touch structure and preparation method thereof, touch screen and electronic equipment

Abstract

The embodiment of the invention provides a touch control structure and a preparation method thereof, a touch control screen and electronic equipment, the touch control structure provided by the embodiment of the invention comprises a base layer and a touch control film layer arranged on the surface of the base layer, and the material of the touch control film layer comprises a first polar group. The touch film layer containing the first polar group is arranged on the surface of the base layer, so that the interaction between the touch pen and the base layer can be increased, the friction force between the pen point of the touch pen and the touch screen is increased, the paper touch sense is simulated, the writing experience of a user is improved, and the problems that the surface of an existing touch screen is smooth, and the touch effect is poor are solved. The paper writing texture cannot be realized, so that the user experience is relatively poor.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and in particular to a touch structure and a preparation method thereof, a touch screen, and an electronic device. Background Art

[0002] With the widespread popularity of touch-screen electronic devices, more and more users tend to pair them with a stylus. The stylus can not only replace fingers to perform refined touch operations on the touch screen, but also can perform operations such as writing and drawing on the touch screen.

[0003] However, the material of existing touch screens is usually glass, and the surface is smooth and flat. When users use a stylus to write or draw, they cannot feel the real feeling on paper, and the immersive experience is poor. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a touch structure and a preparation method thereof, a touch screen, and an electronic device to solve the problem that the surface of the existing touch screen is smooth and cannot achieve the writing texture of paper, resulting in a poor user experience.

[0005] In order to solve the above problems, the present application is implemented through the following technical solutions:

[0006] The present application proposes a touch structure, including a base layer and a touch film layer disposed on the surface of the base layer, wherein the material of the touch film layer includes a first polar group.

[0007] Furthermore, in the touch structure, a water drop angle of the touch film layer is less than or equal to 120°.

[0008] Furthermore, in the touch control structure, the first polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups.

[0009] Furthermore, in the touch structure, the material of the touch film layer is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane.

[0010] Furthermore, in the touch control structure, the pores of the touch control film layer are less than or equal to 20 nm.

[0011] Furthermore, in the touch screen, under a hundred-grid test condition, the adhesion grade of the touch film layer on the surface of the base layer is greater than or equal to 3B.

[0012] Furthermore, in the touch structure, the touch screen further comprises an optical film layer, the optical film layer is attached to the surface of the base layer, and the touch film layer is attached to the surface of the optical film layer.

[0013] Furthermore, in the touch structure, the material of the optical film layer is selected from one or more of polyethylene terephthalate, cellulose triacetate, polyvinyl alcohol, polymethyl methacrylate, and polycarbonate.

[0014] Furthermore, in the touch control structure, the thickness of the touch control film layer is 10-50 nm.

[0015] The present application also proposes a touch screen, comprising the touch structure as described above.

[0016] The present application also proposes a touch control system, including a touch pen and the touch control screen as described above.

[0017] Furthermore, in the touch control system, the touch pen includes a pen tip, and a material of the pen tip includes a second polar group.

[0018] Furthermore, in the touch control system, the second polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups.

[0019] Furthermore, in the touch control system, the material of the pen tip is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane.

[0020] The present application also proposes a method for preparing a touch structure, which includes:

[0021] A touch film layer is formed on the surface of the base layer, and the material of the touch film layer includes a first polar group.

[0022] Furthermore, in the preparation method, the first polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups.

[0023] Furthermore, in the preparation method, the material of the touch film layer is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane.

[0024] Furthermore, in the preparation method, forming a touch film layer on the surface of the base layer comprises:

[0025] Providing an optical film layer, and pre-treating the optical film layer;

[0026] After pretreatment, forming the touch film layer on the surface of the optical film layer;

[0027] After forming the touch film layer, the optical film layer is attached to the surface of the base layer.

[0028] Furthermore, before forming the touch film layer on the surface of the base layer, the preparation method further comprises:

[0029] Pre-treat the surface of the base layer.

[0030] Furthermore, in the preparation method, the pretreatment includes one or more of grinding, flame, corona, plasma, etching, and primer.

[0031] Furthermore, in the preparation method, forming a touch film layer on the surface of the base layer comprises:

[0032] The touch film layer is formed on the surface of the base layer by nano-spraying or chemical vapor deposition.

[0033] Furthermore, in the preparation method, the touch film layer is formed on the surface of the base layer by chemical vapor deposition, comprising:

[0034] Passing gaseous monomers, cross-linking agents, and initiators into a pre-evacuated cavity to perform chemical vapor deposition to form the touch film layer;

[0035] The monomer is selected from at least one of diols, acrylic acid, and diisocyanates; the crosslinking agent is selected from at least one of ethylene oxide, 1,4-butanediol dimethacrylate, ethylene glycol dimethacrylate, hexanediol dimethacrylate, and polyols; and the initiator is selected from at least one of an acidic catalyst, a basic catalyst, a metal catalyst, a Ziegler-Natta catalyst, a persulfate, and an organic metal catalyst.

[0036] Compared with the prior art, the embodiments of the present application have the following advantages:

[0037] In the embodiment of the present application, the touch structure provided includes a base layer and a touch film layer disposed on the surface of the base layer, and the material of the touch film layer includes a first polar group. By disposing a touch film layer containing the first polar group on the surface of the base layer, the interaction between the stylus pen and the base layer can be increased, so that the friction between the tip of the stylus pen and the touch screen is increased, simulating the touch of paper, thereby improving the user's writing experience, thereby solving the problem that the existing touch screen surface is smooth and cannot achieve the writing texture of paper, resulting in a poor user experience.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of a touch structure provided in an embodiment of the present application;

[0040] Figure 2 is another touch structure schematic diagram provided in an embodiment of the present application;

[0041] Figure 3Schematic diagram of the principle of simulating the touch of paper in the embodiment of the present application;

[0042] Figure 4 is a flow chart of a method for preparing a touch control structure provided in an embodiment of the present application;

[0043] Figure 5 This is an operation flow chart of manufacturing a touch film layer in an embodiment of the present application;

[0044] Figure 6 This is another operation flow chart for manufacturing a touch film layer in an embodiment of the present application.

[0045] Description of reference numerals:

[0046] 10-touch structure, 11-base layer, 12-optical film layer, 13-touch film layer, 14-release film layer, 15-back glue. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] The present application embodiment provides a touch control structure 10, such as Figure 1 As shown, it includes a base layer 11 and a touch film layer 13 disposed on the surface of the base layer 11 , and the material of the touch film layer 13 includes a first polar group.

[0049] Among them, the above-mentioned base layer 11 can be a structure arranged on the outermost layer of the touch screen in the prior art, and the main function of this structure is to protect the electronic components inside the touch screen from physical damage, such as scratches, impacts, etc.; optionally, the above-mentioned base layer 11 can be protective glass, tempered film, etc.

[0050] In the embodiment of the present application, a touch film layer containing a first polar group is provided on the surface of the base layer away from the touch screen (i.e., the side facing the outside), and the first polar group has strong van der Waals forces, hydrogen bonds, etc. with the stylus pen, which can increase the interaction between the stylus pen and the base layer when writing on the screen, thereby increasing the friction between the tip of the stylus pen and the touch screen, simulating the touch of paper, thereby improving the user's writing experience, thereby solving the problem that the surface of the existing touch screen is smooth and cannot achieve the writing texture of paper, resulting in a poor user experience.

[0051] Optionally, the water drop angle of the touch film layer 13 is less than or equal to 120°, so that when a user uses a stylus pen to write or draw on the surface of the touch screen, the user has a texture close to writing on paper, which can significantly improve the writing experience.

[0052] Optionally, in one embodiment, the first polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups, and the above groups have a strong dipole moment, so that the water drop angle of the touch film layer can be less than or equal to 120°.

[0053] Optionally, in a specific embodiment, the material of the touch film layer is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane, so that the formed touch film layer not only has strong polarity, but also has better density and light transmittance, better mechanical properties and adhesion, and is not easy to be scratched or peeled off.

[0054] In the embodiment of the present application, the touch film layer is a dense film with pores less than or equal to 20 nm, which can simulate the texture of writing on paper while ensuring smooth writing and the film layer is not easy to fall off.

[0055] In an embodiment of the present application, under the conditions of the 100-grid test, the adhesion level of the touch film layer on the surface of the base layer is greater than or equal to 3B, which can ensure that the touch film layer is not easy to fall off while the first polar group increases the friction between the tip of the stylus pen and the touch display screen, thereby improving its service life.

[0056] Optionally, in a specific embodiment, the thickness of the touch film layer is 10-50 nm, which can effectively take into account the adhesion and the interaction between the stylus and the touch screen under the premise of avoiding interference caused by the visible light band, that is, effectively take into account the writing experience and the service life of the touch film layer. Optionally, in some embodiments, the thickness of the touch film layer can be one of 10 nm, 12 nm, 15 nm, 20 nm, 30 nm, 40 nm, 50 nm, or a range value between any two of them.

[0057] In the embodiment of the present application, the touch film layer can be attached to the surface of the base layer by nano-spraying, chemical vapor deposition, etc.

[0058] Optionally, in an embodiment of the present application, the touch film layer can be formed by chemical vapor deposition of gaseous monomers, cross-linking agents, and initiators in a mass ratio of 70 to 95: 0.5 to 10: 0.1 to 5; wherein the monomer is selected from at least one of diols, acrylic acid, and diisocyanates, the cross-linking agent is selected from at least one of ethylene oxide, 1,4-butanediol dimethacrylate, ethylene glycol dimethacrylate, hexanediol dimethacrylate, and polyols, and the initiator is selected from at least one of an acidic catalyst, a basic catalyst, a metal catalyst, a Ziegler-Natta catalyst, a persulfate, and an organic metal catalyst.

[0059] Among them, the above-mentioned diol can be one or more of ethylene glycol, propylene glycol, and butanediol, the above-mentioned acidic catalyst can be one or more of sulfuric acid and phosphoric acid, the above-mentioned alkaline catalyst can be one or more of sodium hydroxide and potassium hydroxide, the above-mentioned metal catalyst can be one or more of silver-based catalysts, aluminum-based catalysts, and copper-based catalysts, and the above-mentioned persulfate can be a metal persulfate, specifically a transition metal persulfate, a manganese persulfate, etc.

[0060] Optionally, in one implementation, the touch structure 10 provided in the embodiment of the present application further includes an optical film layer 12, such as Figure 2 As shown, the optical film layer 12 is attached to the surface of the above-mentioned base layer 11, and the touch film layer 13 is attached to the surface of the optical film layer 12, that is, the optical film layer 12 and the touch film layer 13 are sequentially stacked on the surface of the above-mentioned base layer 11, wherein the optical film layer 12 can be attached to the surface of the base layer 11 by electrostatic adsorption, vacuum bonding or adhesive bonding, and the touch film layer 13 is attached to the surface of the optical film layer 12 by nano-spraying, chemical vapor deposition, etc.

[0061] The thickness of the optical film layer may be 20 to 100 μm, for example, a range of one or any two of 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm, and 100 μm.

[0062] Optionally, in a specific embodiment, the material of the optical film layer is selected from one or more of polyethylene terephthalate, cellulose triacetate, polyvinyl alcohol, polymethyl methacrylate, and polycarbonate, which is easy for the touch film layer to adhere and bond with the base layer, and can also have better optical properties, thereby ensuring the screen viewing requirements.

[0063] The embodiment of the present application further provides a touch screen, comprising the touch structure as described above.

[0064] The embodiment of the present application further provides an electronic device, including the above-mentioned touch screen. The electronic device may be a mobile phone, a tablet, a computer, etc.

[0065] As for the above-mentioned touch screen and electronic device embodiments, they include the above-mentioned touch screen and can achieve the same technical effects. To avoid repetition, they will not be described here. For relevant matters, please refer to the partial description of the touch screen embodiments.

[0066] The embodiment of the present application further provides a touch control system, including a touch pen and the touch screen as described above.

[0067] The touch system provided in the embodiment of the present application has a touch film layer containing a first polar group on the surface of the base layer of the touch screen. The first polar group has strong van der Waals forces and hydrogen bonds with the stylus pen, which can increase the interaction between the stylus pen and the base layer when writing on the screen, thereby increasing the friction between the tip of the stylus pen and the touch screen, simulating the touch of paper, thereby improving the user's writing experience. This solves the problem that the surface of the existing touch screen is smooth and cannot achieve the writing texture of paper, resulting in a poor user experience.

[0068] Optionally, in one embodiment, the stylus pen includes a pen tip, and the material of the pen tip includes a second polar group. In this embodiment, because the pen tip and the touch film layer on the surface of the touch screen respectively have the second polar group and the first polar group, there is a stronger interaction force such as van der Waals force and hydrogen bond between the polar groups of the two, so that when the stylus pen is used to write on the touch screen, Figure 3 As shown, hydrogen bonds can be formed between the same groups such as -OH, -COOH, -NHCO, ester groups, etc. existing on the pen tip and the touch screen, as well as between different groups, thereby effectively increasing the friction between the pen tip and the touch screen and simulating a more realistic paper writing texture.

[0069] Optionally, the water drop angle of the pen tip is less than or equal to 120°, so that when the user uses the stylus pen to write or draw on the touch screen surface, it has a texture close to writing on paper, which can significantly improve the writing experience.

[0070] Optionally, in one embodiment, the second polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups, and the above groups have a strong dipole moment, so that the water drop angle of the pen tip can be less than or equal to 120°.

[0071] Optionally, in a specific embodiment, the material of the pen tip is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane, so that the formed pen tip not only has strong polarity, but also has better density and light transmittance, better mechanical properties and adhesion, and is not easy to be scratched or peeled off.

[0072] The present application also provides a method for preparing a touch structure. Figure 4 As shown, step 402 is included:

[0073] Step 402 : forming a touch film layer on the surface of the base layer, wherein the material of the touch film layer includes a first polar group.

[0074] In the above step 402, the above base layer is a structure arranged at the outermost layer of the touch screen in the prior art, and the main function of this structure is to protect the electronic components inside the touch screen from physical damage, such as scratches, impacts, etc.; optionally, the above base layer can be a protective glass, etc.

[0075] In the above step 402, the surface on which the touch film layer is formed is specifically the surface of the base layer facing away from the touch screen, that is, the surface for contacting the outside world and receiving touch operations. A dense film is prepared on the surface using a material having a first polarity group to serve as the above touch film layer.

[0076] In the preparation method provided in the embodiment of the present application, a touch film layer having a first polar group is formed on the surface of a base layer to obtain a touch structure installed on the surface of a touch screen. Due to the presence of the touch film layer, the structure can increase the interaction between the stylus pen and the base layer, thereby increasing the friction between the tip of the stylus pen and the touch screen, simulating the touch of paper, thereby improving the user's writing experience.

[0077] Optionally, in step 403, the first polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups. The above groups have a strong dipole moment, so that the water drop angle of the touch film layer can be less than or equal to 120°.

[0078] Optionally, in a specific embodiment, the material of the touch film layer is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane, so that the formed touch film layer not only has strong polarity, but also has better density and light transmittance, better mechanical properties and adhesion, and is not easy to be scratched or peeled off.

[0079] Optionally, in one embodiment, the preparation method provided in the embodiment of the present application further includes step 401 before the above step 402:

[0080] Step 401: pre-treat the surface of the base layer.

[0081] In the above-mentioned embodiment, the pretreatment process can improve the surface adhesion of the base layer. The pretreatment method can be a physical treatment or a chemical treatment. Specifically, the surface of the base layer can be pretreated by cleaning, surface modification, surface roughening, surface activation, coating, etc., so as to facilitate the firm adhesion of subsequent touch film layers and other film layers.

[0082] Optionally, in the above step 401, the pretreatment includes one or more of grinding, flame, corona, plasma, etching, and primer.

[0083] Among them, the grinding treatment uses mechanical grinding to improve the surface roughness. Specifically, 80-400 mesh sandpaper can be selected for grinding.

[0084] Among them, flame treatment uses the high temperature of flame to partially oxidize the plastic surface, increase polar groups, and thus improve surface energy; optionally, the temperature of flame treatment is 1000-3000°C and the time is 0.1-10s, for example, 3-5s, which can effectively improve the surface energy while avoiding deformation of the substrate.

[0085] Among them, corona treatment uses high-frequency and high-voltage equipment to discharge the surface, activate surface molecules, increase polar groups, and improve surface energy; optionally, the AC voltage range of corona treatment is 5000~15000V / m 2 .

[0086] Among them, plasma treatment ionizes gas molecules into charged particles to form highly active plasma, and then uses the plasma to bombard and react on the surface of the material, thereby changing the physical and chemical properties of the material surface and facilitating the attachment of the touch film layer.

[0087] Among them, the etching process includes wet etching and dry etching. Wet etching can use chemical solutions such as ferric chloride aqueous solution and sodium hydroxide aqueous solution for etching, while dry etching uses physical impact or plasma for etching.

[0088] Among them, primer treatment is to apply primer materials such as epoxy primer, polyurethane primer and acrylic primer on the surface to improve adhesion.

[0089] Optionally, in one embodiment, forming a touch film layer on the surface of the base layer includes step 421:

[0090] The touch film layer is formed on the surface of the base layer by nano-spraying or chemical vapor deposition.

[0091] In this embodiment, a material having a first polar group is attached to the surface of the base layer by nano-spraying, chemical vapor deposition, etc., so as to form a dense and polar touch film layer.

[0092] When using nano-spraying to make the touch film layer, please refer to Figure 5 , showing an operation flow chart of the above-mentioned embodiment.

[0093] Optionally, in a specific implementation manner, the touch film layer is formed on the surface of the base layer by chemical vapor deposition, including step 4211:

[0094] Step 4211, introducing gaseous monomers, cross-linking agents, and initiators into a pre-evacuated chamber to perform chemical vapor deposition to form the touch film layer;

[0095] The monomer is selected from at least one of diols, acrylic acid, and diisocyanates; the crosslinking agent is selected from at least one of ethylene oxide, 1,4-butanediol dimethacrylate, ethylene glycol dimethacrylate, hexanediol dimethacrylate, and polyols; and the initiator is selected from at least one of an acidic catalyst, a basic catalyst, a metal catalyst, a Ziegler-Natta catalyst, a persulfate, and an organic metal catalyst.

[0096] In this embodiment, the monomer, crosslinking agent and initiator are gasified and introduced into a vacuum chamber at a preset mass ratio of 70-95:0.5-10:0.1-5 for chemical vapor deposition, thereby forming a touch film layer having a first polar matrix.

[0097] In this embodiment, the vaporization temperature may be 20-90° C., the temperature of the vapor deposition process may be 150-300° C., and the substrate temperature may be controlled to be less than or equal to 50° C., which can effectively avoid deformation of the film material.

[0098] Optionally, in one embodiment, forming a touch film layer on the surface of the base layer includes steps 422 to 424:

[0099] Step 422: provide an optical film layer, and pre-treat the optical film layer.

[0100] In the above step 422, the optical film layer can be provided alone, or provided in combination with the release film layer 14, such as Figure 6 As shown, a backing adhesive 15 may be disposed between the release film layer 14 and the optical film layer 12 , so as to facilitate the touch film layer 12 to be attached to the surface of the base layer 11 after being formed on the surface of the optical film layer 13 .

[0101] In the above step 422, the above pretreatment process is intended to improve the surface adhesion of the optical film layer. The pretreatment method can be a physical treatment or a chemical treatment. Specifically, the surface of the optical film layer can be pretreated by cleaning, surface modification, surface roughening, surface activation, coating, etc., so as to facilitate the firm adhesion of the subsequent touch film layer.

[0102] Optionally, in the above step 422, the pretreatment includes one or more of grinding, flame, corona, plasma, etching, and primer.

[0103] Among them, the grinding treatment uses mechanical grinding to improve the surface roughness. Specifically, 80-400 mesh sandpaper can be selected for grinding.

[0104] Among them, flame treatment uses the high temperature of flame to partially oxidize the plastic surface, increase polar groups, and thus improve surface energy; optionally, the temperature of flame treatment is 1000-3000°C and the time is 0.1-10s, for example, 3-5s, which can effectively improve the surface energy while avoiding deformation of the substrate.

[0105] Among them, corona treatment uses high-frequency and high-voltage equipment to discharge the surface, activate surface molecules, increase polar groups, and improve surface energy; optionally, the AC voltage range of corona treatment is 5000~15000V / m 2 .

[0106] Among them, plasma treatment ionizes gas molecules into charged particles to form highly active plasma, and then uses the plasma to bombard and react on the surface of the material, thereby changing the physical and chemical properties of the material surface and facilitating the attachment of the touch film layer.

[0107] Among them, the etching process includes wet etching and dry etching. Wet etching can use chemical solutions such as ferric chloride aqueous solution and sodium hydroxide aqueous solution for etching, while dry etching uses physical impact or plasma for etching.

[0108] Among them, primer treatment is to apply primer materials such as epoxy primer, polyurethane primer and acrylic primer on the surface to improve adhesion.

[0109] Step 423: After pre-treatment, forming the touch film layer on the surface of the optical film layer.

[0110] In the above step 423, because the surface of the optical film layer has been pre-treated, it has a higher adhesion, so a dense film layer can be prepared on its surface using a material having a first polarity group as the above touch film layer.

[0111] Step 424: After forming the touch film layer, attach the optical film layer to the surface of the base layer.

[0112] In the above step 424, the side of the optical film layer facing away from the touch film layer is attached to the surface of the base layer by electrostatic adsorption, vacuum bonding or adhesive bonding, so that the touch film layer is attached to the surface of the base layer with the optical film layer as an intermediate connector.

[0113] In the above embodiment, a touch film layer having a first polar matrix is ​​first attached to a pretreated optical film layer, and then the optical film layer is adhered to the surface of the base layer, thereby forming a touch film layer having polar groups on the surface of the touch screen, which can increase the interaction between the stylus pen and the touch screen, increase the friction between the tip of the stylus pen and the touch screen, simulate the touch of paper, and thus improve the user's writing experience.

[0114] In the above step 423, a touch film layer can also be formed on the surface of the optical film layer by nano-spraying, chemical vapor deposition, etc. For details, please refer to step 4211, which will not be repeated here.

[0115] The present application is described in detail below through examples.

[0116] Example 1

[0117] (1) The monomer methyl methacrylate, the initiator benzoyl peroxide (BPO) and the cross-linking agent dimethyl methacrylate were gasified at 90°C, 80°C and 25°C respectively, and the mass ratio of the monomer, the initiator and the cross-linking agent was adjusted by a needle valve to 95:0.5:4.5 and introduced into a cavity that was previously evacuated to a vacuum, and the hot wire was heated to 210°C to start the polymerization reaction, and the temperature of the substrate polyethylene terephthalate (PET) optical film layer with a thickness of 60 μm was controlled at 38°C by cooling circulating water, and the deposition pressure was controlled at 400 mTorr by a vacuum butterfly valve, so that the polymerized thin film was deposited on the substrate, wherein the thin film deposition rate was controlled to be 5 nm / min and the deposition time was 2 min;

[0118] (2) The substrate is vacuum bonded to the surface of the touch screen protective glass through the back glue to obtain a touch structure.

[0119] Embodiment 2-3

[0120] The difference between Examples 2 to 3 and Example 1 is that in step (1), the deposition time is adjusted to 6 minutes and 10 minutes respectively.

[0121] Embodiment 4-5

[0122] The difference between Examples 4 to 5 and Example 1 is that in step (1), the monomers are adjusted to diol and diisocyanate, respectively.

[0123] Embodiments 6 to 11

[0124] The difference between Examples 6 to 11 and Example 1 is that in step (1), the substrate is pretreated by grinding, flame, corona, plasma, etching, and primer coating.

[0125] Example 12

[0126] The difference between Example 12 and Example 1 is that in step (1), the acetone solution of acrylic resin is treated by ultrasonic dispersion process, injected into ultrasonic spraying equipment, evenly sprayed on the substrate, and finally the solvent is dried to form a nano film.

[0127] Example 13

[0128] The difference between Example 13 and Example 1 is that in step (1), the substrate is replaced with a touch screen protection glass, and step (2) is omitted.

[0129] Embodiments 14 to 19

[0130] The difference between Examples 14 to 19 and Example 13 is that in step (1), the substrate is pretreated by grinding, flame, corona, plasma, etching, and primer.

[0131] Comparative Example 1

[0132] The difference between Comparative Example 1 and Example 1 is that step (1) is omitted.

[0133] Comparative Example 2

[0134] The difference between Comparative Example 2 and Example 13 is that the touch protection glass is directly used as the touch structure.

[0135] The substrate pretreatment and coating parameters in each embodiment and comparative example are shown in Table 1.

[0136] Adhesion and friction coefficient tests were performed on the surfaces of the touch structures in the embodiments and comparative examples, and friction coefficient tests were performed on ordinary A4 paper. The results are shown in Table 1.

[0137] Table 1

[0138]

[0139] To summarize, in this embodiment, by providing a touch film layer containing a first polar group on the surface of the base layer, the interaction between the stylus pen and the base layer can be increased, so that the friction between the tip of the stylus pen and the touch screen is increased, simulating the touch of paper, thereby improving the user's writing experience, thereby solving the problem that the surface of the existing touch screen is smooth and cannot achieve the writing texture of paper, resulting in a poor user experience.

[0140] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0141] The above is a detailed introduction to a touch structure and a preparation method thereof, a touch screen, and an electronic device provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A touch structure, characterized in that: It comprises a base layer and a touch film layer arranged on the surface of the base layer, and the material of the touch film layer comprises a first polar group.

2. The touch control structure according to claim 1, characterized in that: The water drop angle of the touch film layer is less than or equal to 120°; and / or Under the 100-grid test condition, the adhesion grade of the touch film layer on the surface of the base layer is greater than or equal to 3B; and / or The pores of the touch film layer are less than or equal to 20 nm; and / or The thickness of the touch film layer is 10-50 nm.

3. The touch control structure according to claim 1 or 2, characterized in that: The first polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups.

4. The touch control structure according to claim 2, characterized in that: The material of the touch film layer is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane.

5. The touch control structure according to any one of claims 1 to 4, characterized in that: The touch screen further comprises an optical film layer, wherein the optical film layer is attached to the surface of the base layer, and the touch film layer is attached to the surface of the optical film layer.

6. The touch control structure according to claim 5, characterized in that: The material of the optical film layer is selected from one or more of polyethylene terephthalate, triacetyl cellulose, polyvinyl alcohol, polymethyl methacrylate, and polycarbonate.

7. A touch screen, characterized in that: The touch screen comprises the touch structure as claimed in any one of claims 1 to 6.

8. A touch control system, characterized in that: It comprises a touch pen and a touch screen as claimed in claim 7.

9. The touch control system according to claim 8, characterized in that: The stylus pen includes a pen tip, and a material of the pen tip includes a second polar group.

10. The touch control system according to claim 9, characterized in that: The second polar group is selected from one or more of -OH, -COOH, -NHCO, and ester groups.

11. The touch control system according to claim 9, characterized in that: The material of the pen tip is selected from one or more of polyethylene glycol, polyacrylic acid, and polyurethane.

12. A method for preparing a touch structure, characterized in that: include: A touch film layer is formed on the surface of the base layer, and the material of the touch film layer includes a first polar group.

13. The preparation method according to claim 12, characterized in that: A touch film layer is formed on the surface of the base layer, including: Providing an optical film layer, and pre-treating the optical film layer; After pretreatment, forming the touch film layer on the surface of the optical film layer; After forming the touch film layer, the optical film layer is attached to the surface of the base layer.

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