A UV-resistant touchscreen and touch display module

Abstract

This invention discloses a UV-resistant touchscreen and touch display module, relating to the field of [technology / industry]. It comprises a touchscreen body and a UV-resistant coating applied to the surface of the touchscreen body. The UV-resistant coating is composed of the following components in the indicated mass ratios: a high-refractive-index material H layer made of tantalum oxide, 25-35 parts; a low-refractive-index material L layer made of magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; a film-forming resin, 25-35 parts; and functional additives, 5-10 parts. The UV-resistant additives include ultraviolet absorbers and ultraviolet shielding agents. This invention exhibits excellent UV resistance: by incorporating titanium dioxide nanoparticles and ultraviolet absorbers, it effectively absorbs and reflects ultraviolet rays, protecting the substrate from UV damage, while also preventing the effects of ultraviolet penetration on the human body.

Description

Technical Field

[0001] This invention relates to the field of touch screens, and more particularly to a UV-resistant touch screen and touch display module. Background Technology

[0002] Light pollution is a new source of environmental pollution following pollution from exhaust gas, wastewater, waste residue, and noise. It mainly includes specular reflection pollution and luminous pollution such as white light pollution, artificial daylight pollution, and colored light pollution; artificial daylight and colored light pollution such as neon lights, billboard lights, LED lights, fluorescent lights, and rotating lights; and specular reflection light pollution such as large mirrors or aluminum alloy decorative facades of shops, tempered glass of buildings, marble, mirrored decorations on clothing, and eyeglasses.

[0003] Studies have shown that when the unit reflectance of light reaches a certain value, light pollution not only damages the corners of the eyes and irises, causing vision loss and increasing the incidence of cataracts, but also disrupts people's normal biological rhythms, causing the body's biological clock to become disordered, leading to loss of appetite, low spirits, and other physical and mental health problems.

[0004] Therefore, how to achieve UV resistance in touchscreens, improve the user experience, and reduce harm to the human body is a technical problem that urgently needs to be solved.

[0005] Therefore, this invention proposes a UV-resistant touch screen and touch display module. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a UV-resistant touch screen and touch display module.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A UV-resistant touchscreen comprises a touchscreen body and a UV-resistant coating applied to the surface of the touchscreen body, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 25-35 parts; L-layer of low refractive index material prepared from magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; Film-forming resin, 25-35 parts; Functional additives, 5-10 parts.

[0008] Preferably, the UV-resistant additive includes ultraviolet absorbers and ultraviolet shielders.

[0009] Preferably, the ultraviolet absorber is any one or a combination of UV-329, UV-531, Tinuvin 234, UV-900, and UV-PR25.

[0010] Preferably, the ultraviolet shielding agent is any one or more combinations of titanium dioxide, zinc oxide, ceramic powder, metal oxide, and metal particles.

[0011] Preferably, the film-forming resin is any one or a combination of polyacrylate emulsion, polyvinyl alcohol, polystyrene, polyurethane, and epoxy resin.

[0012] Preferably, the functional additives include: Plasticizers: These are phthalates or epoxidized soybean oil, Antioxidants: These are hindered phenols or phosphites, Light stabilizers: These are hindered amines or benzotriazoles. Lubricant: It is calcium stearate or polyethylene glycol. Flame retardants: These are halogen-based or phosphorus-based flame retardants.

[0013] Preferably, the method for preparing the UV-resistant coating includes the following steps: S1: Raw material preparation: Tantalum oxide, magnesium fluoride, and anti-UV additives are mixed in proportion to obtain a mixed powder. Then, the film-forming resin and functional additives are mixed and stirred until completely dissolved to obtain a film-forming solution. S2: Coating preparation: H layer and L layer are alternately deposited on glass substrate by electron beam evaporation or magnetron sputtering to form a multilayer film structure. Then, the mixed powder is uniformly dispersed in the film forming solution to form an anti-UV coating liquid. The UV coating liquid is uniformly coated on the multilayer film structure by coating method. S3: Curing treatment. The glass substrate coated with anti-UV coating liquid is placed in a vacuum oven for baking, and then treated with ultraviolet light. The ultraviolet light promotes the cross-linking reaction of the resin in the coating, further improving the hardness and weather resistance of the coating.

[0014] Preferably, in step S2, the multilayer film structure has 6 layers, namely H layer → L layer → H layer → L layer → H layer → L layer, and the thickness of each layer is 50-100nm, and the coating thickness during coating is 200-300nm.

[0015] Preferably, in step S3, the drying temperature is 80-100 degrees Celsius, the drying time is 2-4 hours, and the ultraviolet irradiation intensity is 50-100 mW / cm. 2 The irradiation time is 10-20 minutes.

[0016] A UV-resistant touch display module includes a touch screen body and a UV-resistant coating applied to the surface of the touch screen body. The touch display module also includes a waterproof strip, a control circuit board, and a back plate. The control circuit board is fixed to the inner wall of the back plate by bolts. A stepped groove is formed on the end face of the back plate. The touch screen body is fixedly embedded in the inner wall of the stepped groove, and the waterproof strip is pressed against the surface of the touch screen body and fixed to the inner wall of the stepped groove.

[0017] The beneficial effects of this invention are as follows: This invention has excellent UV resistance: by adding titanium dioxide nanoparticles and ultraviolet absorbers, it effectively absorbs and reflects ultraviolet rays, protecting the substrate from ultraviolet damage, and at the same time preventing the effects of ultraviolet penetration on the human body.

[0018] This invention features high reflectivity: the multilayer film structure design enables the reflective film to have high reflectivity in the visible light band, thus improving product performance. This invention exhibits excellent weather resistance: the use of polyacrylate emulsion as a film-forming resin, combined with the application of antioxidants, significantly improves the weather resistance of the reflective film and extends its service life. This invention features a simple process: it employs mature technologies such as electron beam evaporation, magnetron sputtering, and spin coating, making the preparation process easy to control and suitable for large-scale production. Attached Figure Description

[0019] Figure 1 This is an exploded view of a UV-resistant touch display module proposed in this invention. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example 1: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 25-35 parts; L-layer of low refractive index material prepared from magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; Film-forming resin, 25-35 parts; Functional additives, 5-10 parts.

[0023] Example 2: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 28-32 parts; L-layer of low refractive index material prepared from magnesium fluoride, 23-27 parts; UV-resistant additives, 8-12 parts; Film-forming resin, 28-32 parts; Functional additives, 6-9 parts.

[0024] Example 3: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 30 parts; L-layer, a low-refractive-index material prepared from magnesium fluoride, 25 parts; UV-resistant additive, 10 parts; Film-forming resin, 30 parts; Functional additives, 7.5 parts.

[0025] Example 4: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 30 parts; L-layer, a low-refractive-index material prepared from magnesium fluoride, 25 parts; UV-resistant additive, 10 parts; Film-forming resin, 30 parts; Functional additives, 7.5 parts.

[0026] The UV-resistant additives include UV absorbers and UV shielders.

[0027] The ultraviolet absorber is UV-329.

[0028] The ultraviolet shielding agent is titanium dioxide.

[0029] The film-forming resin is a polyacrylate emulsion.

[0030] The functional additives include: Plasticizers: These are phthalates, Antioxidants: These are hindered phenols, Light stabilizers: These are hindered amines, Lubricant: It is calcium stearate, Flame retardant: It is a halogenated flame retardant.

[0031] Example 5: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 30 parts; L-layer, a low-refractive-index material prepared from magnesium fluoride, 25 parts; UV-resistant additive, 10 parts; Film-forming resin, 30 parts; Functional additives, 7.5 parts.

[0032] The UV-resistant additives include UV absorbers and UV shielders.

[0033] The ultraviolet absorber is Tinuvin 234.

[0034] The ultraviolet shielding agent is ceramic powder.

[0035] The film-forming resin is polystyrene.

[0036] The functional additives include: Plasticizer: It is epoxidized soybean oil, Antioxidants: These are phosphites, Light stabilizers: These are benzotriazole derivatives. Lubricant: It is polyethylene glycol, Flame retardant: It is a phosphorus-based flame retardant.

[0037] Example 6: A UV-resistant touchscreen comprises a touchscreen body 1 and a UV-resistant coating applied to the surface of the touchscreen body 1, wherein the UV-resistant coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 30 parts; L-layer, a low-refractive-index material prepared from magnesium fluoride, 25 parts; UV-resistant additive, 10 parts; Film-forming resin, 30 parts; Functional additives, 7.5 parts.

[0038] The UV-resistant additives include UV absorbers and UV shielders.

[0039] The ultraviolet absorber is UV-PR25.

[0040] The ultraviolet shielding agent is a metal particle.

[0041] The film-forming resin is epoxy resin.

[0042] The functional additives include: Plasticizers: These are phthalates, Antioxidants: These are hindered phenols, Light stabilizers: These are hindered amines, Lubricant: It is calcium stearate, Flame retardant: It is a halogenated flame retardant.

[0043] Example 7: The method for preparing the UV-resistant coating includes the following steps: S1: Raw material preparation: Tantalum oxide, magnesium fluoride, and anti-UV additives are mixed in proportion to obtain a mixed powder. Then, the film-forming resin and functional additives are mixed and stirred until completely dissolved to obtain a film-forming solution. S2: Coating preparation: H layer and L layer are alternately deposited on glass substrate by electron beam evaporation or magnetron sputtering to form a multilayer film structure. Then, the mixed powder is uniformly dispersed in the film forming solution to form an anti-UV coating liquid. The UV coating liquid is uniformly coated on the multilayer film structure by coating method. S3: Curing treatment. The glass substrate coated with anti-UV coating liquid is placed in a vacuum oven for baking, and then treated with ultraviolet light. The ultraviolet light promotes the cross-linking reaction of the resin in the coating, further improving the hardness and weather resistance of the coating.

[0044] In step S2, the multilayer film structure has a total of 6 layers, namely H layer → L layer → H layer → L layer → H layer → L layer, and the thickness of each layer is 50-100nm, and the coating thickness during coating is 200-300nm.

[0045] In step S3, the drying temperature is 80-100 degrees Celsius, the drying time is 2-4 hours, and the ultraviolet irradiation intensity is 50-100 mW / CM. 2 The irradiation time is 10-20 minutes.

[0046] Example 8: A UV-resistant touch display module includes a touch screen body 1 as described in Examples 1-8 and a UV-resistant coating applied to the surface of the touch screen body 1. The touch display module also includes a waterproof strip 2, a control circuit board 3, and a back plate 4. The control circuit board 3 is fixed to the inner wall of the back plate 4 by bolts. A stepped groove is formed on the end face of the back plate 4. The touch screen body 1 is fixedly embedded in the inner wall of the stepped groove, and the waterproof strip 2 is pressed against the surface of the touch screen body 1 and fixed to the inner wall of the stepped groove.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A UV-resistant touchscreen, characterized in that, It consists of a touch screen body (1) and an anti-UV coating applied to the surface of the touch screen body (1), wherein the anti-UV coating is composed of the following components in the indicated mass ratio: H layer, a high refractive index material prepared from tantalum oxide, 25-35 parts; L-layer of low refractive index material prepared from magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; Film-forming resin, 25-35 parts; Functional additives, 5-10 parts.

2. The UV-resistant touchscreen according to claim 1, characterized in that, The UV-resistant additives include UV absorbers and UV shielders.

3. A UV-resistant touchscreen according to claim 2, characterized in that, The ultraviolet absorber is any one or a combination of UV-329, UV-531, Tinuvin 234, UV-900, and UV-PR25.

4. A UV-resistant touchscreen according to claim 2, characterized in that, The ultraviolet shielding agent is any one or more combinations of titanium dioxide, zinc oxide, ceramic powder, metal oxide, and metal particles.

5. A UV-resistant touchscreen according to claim 1, characterized in that, The film-forming resin is any one or a combination of polyacrylate emulsion, polyvinyl alcohol, polystyrene, polyurethane, and epoxy resin.

6. A UV-resistant touchscreen according to claim 1, characterized in that, The functional additives include: Plasticizers: These are phthalates or epoxidized soybean oil, Antioxidants: These are hindered phenols or phosphites, Light stabilizers: These are hindered amines or benzotriazoles. Lubricant: It is calcium stearate or polyethylene glycol. Flame retardants: These are halogen-based or phosphorus-based flame retardants.

7. A UV-resistant touchscreen according to claim 1, characterized in that, The method for preparing the UV-resistant coating includes the following steps: S1: Raw material preparation: Tantalum oxide, magnesium fluoride, and anti-UV additives are mixed in proportion to obtain a mixed powder. Then, the film-forming resin and functional additives are mixed and stirred until completely dissolved to obtain a film-forming solution. S2: Coating preparation: H layer and L layer are alternately deposited on glass substrate by electron beam evaporation or magnetron sputtering to form a multilayer film structure. Then, the mixed powder is uniformly dispersed in the film forming solution to form an anti-UV coating liquid. The UV coating liquid is uniformly coated on the multilayer film structure by coating method. S3: Curing treatment. The glass substrate coated with anti-UV coating liquid is placed in a vacuum oven for baking, and then treated with ultraviolet light. The ultraviolet light promotes the cross-linking reaction of the resin in the coating, further improving the hardness and weather resistance of the coating.

8. A UV-resistant touchscreen according to claim 7, characterized in that, In step S2, the multilayer film structure has a total of 6 layers, namely H layer → L layer → H layer → L layer → H layer → L layer, and the thickness of each layer is 50-100nm, and the coating thickness during coating is 200-300nm.

9. A UV-resistant touchscreen according to claim 7, characterized in that, In step S3, the drying temperature is 80-100 degrees Celsius, the drying time is 2-4 hours, and the ultraviolet irradiation intensity is 50-100 mW / CM. 2 The irradiation time is 10-20 minutes.

10. A UV-resistant touch display module, comprising a touch screen body (1) as described in any one of claims 1-9 and a UV-resistant coating applied to the surface of the touch screen body (1), characterized in that, The touch display module also includes a waterproof strip (2), a control circuit board (3) and a back plate (4). The control circuit board (3) is fixed to the inner wall of the back plate (4) by bolts. A stepped groove is provided on the end face of the back plate (4). The touch screen body (1) is fixedly embedded in the inner wall of the stepped groove, and the waterproof strip (2) is pressed against the surface of the touch screen body (1) and fixed to the inner wall of the stepped groove.

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