Heat-insulating film-coated cover plate and touch screen

Abstract

The utility model discloses a heat insulation film coating cover plate and a touch screen and relates to the field of display screens, the cover plate comprises a substrate, an optical film coating layer is arranged on the front face of the substrate, and a heat insulation film coating layer is arranged on the surface, away from the substrate, of the optical film coating layer; the touch screen comprises a heat insulation film coating cover plate, a sensor layer is arranged on the back face of a substrate, and the sensor layer is fixedly bonded with the substrate through a heat absorption optical adhesive layer. According to the utility model, the optical coating layer is arranged on the front surface of the substrate to form the optical interference layer, so that the reflection of light is obviously reduced, the transmittance is improved, the optical properties of reflection resistance and light filtering of the cover plate are improved, and the heat insulation coating layer on the surface layer has a good heat insulation function, so that the heat insulation property of the cover plate is improved, and the reduction of heat transfer is facilitated; the electronic product is protected from overheating damage, the service life of the electronic product is prolonged, meanwhile, the durability and wear resistance of the cover plate can be improved through the coating layer structure, the surface of the cover plate is protected from chemical corrosion, and the service life of the cover plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a heat-insulating film-coated cover plate and a touch screen. Background Art

[0002] With the continuous advancement of technology, glass cover plates are increasingly used in various fields such as architecture, automobiles, and electronic equipment. In order to ensure the display effect of the cover plate, a coating treatment is performed on the outer surface of the cover plate to reduce the color difference of the cover plate display.

[0003] Chinese patent application number CN201621320160.5 discloses a coated cover plate and touch screen product, comprising a glass substrate, a vacuum-coated structural layer disposed on the glass substrate, and an ink coating disposed on the vacuum-coated structural layer. The vacuum-coated structural layer comprises at least one layer of a multi-structured coated film, the multi-structured coated film having laser-etched patterns. The multi-structured coated film comprises different combinations of SiO2, Nb2O5, CrO, TiO2, ZrO2, and Al2O3 film layers. This structure achieves different color effects through the different vacuum-coated structural layers. Special patterns are etched into the multi-structured coated film by laser etching, and the film is then covered with the desired ink to protect the film. The resulting product is a colorful, bright, and colorful coated cover plate and touch screen product with special patterns and dazzling effects. The product features clear, beautiful patterns, rich colors, and a bright, mirror-like finish, significantly enhancing the aesthetic appearance of the touch screen product.

[0004] Chinese patent application number CN202320593047.8 discloses a coating integrated hidden cover structure, which includes a cover body and a frame, the front and back of the frame are open, the cover body is located in the inner cavity of the frame, the four sides of the cover body are embedded in the inner wall of the inner cavity of the frame, the four sides of the frame are provided with a protective mechanism, the front of the cover body is provided with a coating mechanism, the coating mechanism includes a first coating layer, a second coating layer, a third coating layer, a fourth coating layer, a fifth coating layer and a sixth coating layer, the first coating layer The second coating layer, the third coating layer, the fourth coating layer, the fifth coating layer and the sixth coating layer are stacked in sequence from back to front, the first coating layer, the third coating layer and the fifth coating layer are all TIO2 layers, the second coating layer, the fourth coating layer and the sixth coating layer are all SIO2 layers, and through the cooperation of the first coating layer, the second coating layer, the third coating layer, the fourth coating layer, the fifth coating layer and the sixth coating layer, the TIO2 layer and the SIO2 layer are stacked to achieve a multi-layer overlapping effect, which can solve the problem of large color difference between the front color and the edge color of the cover body.

[0005] China's patent application number CN202023239678.5 discloses a 3D cover that reduces the color difference of the coating edge, including a cover body and an enclosing edge, wherein the cover body is a rectangular plastic sheet, and the enclosing edge is surrounded by the cover body to form an installation cavity for accommodating the mobile phone body, the cover body and the enclosing edge are an integrated structure, and the cover body and the enclosing edge are connected by a smooth transition of an arc surface, the outer surfaces of the cover body and the enclosing edge are both coated, and the coating is an 8-layer layered structure, the first layer is a ZRO2 layer with a thickness of 10.00 nm; the second layer is a TIO2 layer with a thickness of 7.82 nm; the third layer is a SIO2 layer with a thickness of 80 nm; the fourth layer is a TIO2 layer with a thickness of 72.32 nm; the fifth layer is a SIO2 layer with a thickness of 65.00 nm; the sixth layer is a TIO2 layer with a thickness of 60.00 nm The seventh layer is a SiO2 layer with a thickness of 94.77 nm; the eighth layer is a SiO2 layer with a thickness of 23.51 nm. The first layer is the bottom layer, directly plated on the plastic of the cover, and the eighth layer is the outermost layer. This technical solution achieves a multi-layer overlapping effect by increasing the number of coating layers and strictly controlling the material and thickness of the film layers, thereby ensuring that the color of the product edge is close to that of the front, reducing color differences.

[0006] While existing cover structures can improve the optical performance of glass cover plates to meet the diverse needs of modern high-tech products, they have limitations in thermal performance. In particular, when the product is used outdoors, the cover plate's thermal insulation is poor. For example, when exposed to sunlight, traditional glass cover plates are unable to withstand the heat, causing the product to overheat due to the sunlight, shortening its service life and affecting the user experience. Therefore, the present invention discloses a thermally insulating, coated cover plate and touch screen to address the above issues. Utility Model Content

[0007] Based on this, it is necessary to provide a heat-insulating coated cover plate and touch screen to address the above-mentioned technical problems. By setting an optical coating layer on the front of the substrate to form an optical interference layer, the reflection of light is significantly reduced, the transmittance is improved, and the anti-reflection and light filtering optical properties of the cover plate are improved. The surface heat-insulating coating layer has good thermal isolation function, which improves the thermal isolation performance of the cover plate, helps to reduce heat transfer, protects the product from overheating damage, and increases the service life of the electronic product. At the same time, the coating layer structure can improve the durability and wear resistance of the cover plate, protect the surface of the cover plate from chemical corrosion, and increase the service life of the cover plate.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A heat-insulating coating cover comprises a substrate, wherein an optical coating layer is provided on the front surface of the substrate, and a heat-insulating coating layer is provided on the surface of the optical coating layer facing away from the substrate.

[0010] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the substrate is a transparent glass plate.

[0011] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the optical coating layer has a six-layer structure, which is formed by alternating titanium dioxide coating layers and silicon dioxide coating layers three times, and the silicon dioxide coating layer is bonded to the surface of the substrate.

[0012] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the thickness of the titanium dioxide coating layer and the silicon dioxide coating layer are both 70-100 nanometers.

[0013] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the thermal insulation coating layer is a lead telluride coating layer.

[0014] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the thickness of the lead telluride coating layer is 50-150 nanometers.

[0015] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, a black ink layer is provided on the back of the substrate, and the thickness of the black ink layer is 10-12 microns.

[0016] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, the substrate includes a visible area and a non-visual area, and the black ink layer is provided in the non-visual area.

[0017] As a preferred embodiment of the thermal insulation coating cover provided by the present invention, a heat-absorbing optical adhesive layer is provided on the back side of the substrate, and a release film is provided on the surface of the heat-absorbing optical adhesive layer facing away from the substrate.

[0018] A touch screen comprises the above-mentioned heat-insulating film-coated cover plate, wherein a sensor layer is provided on the back of the substrate, and the sensor layer is bonded and fixed to the substrate via a heat-absorbing optical adhesive layer.

[0019] The heat-insulating coating cover and touch screen provided by the utility model form an optical interference layer by arranging an optical coating layer on the front surface of the substrate, which significantly reduces light reflection, increases transmittance, and improves the anti-reflection and light filtering optical properties of the cover. The heat-insulating coating layer on the surface has a good thermal isolation function, which improves the thermal isolation performance of the cover, helps to reduce heat transfer, protects products from overheating damage, and increases the service life of electronic products. At the same time, the coating layer structure can improve the durability and wear resistance of the cover, protect the cover surface from chemical corrosion, and increase the service life of the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a side view of Example 1 of the thermal insulation coating cover provided by the present invention;

[0022] Figure 2 This is a schematic plan view of the substrate in the thermal insulation coating cover provided by the utility model;

[0023] Figure 3 This is a side view of Example 2 of the thermal insulation coating cover provided by the present invention;

[0024] Figure 4 This is a structural diagram of the touch screen provided by the utility model.

[0025] The markings in the figure are as follows:

[0026] 1. Substrate; 2. Thermal insulation coating layer; 3. Titanium dioxide coating layer; 4. Silicon dioxide coating layer; 5. Black ink layer; 6. Heat-absorbing optical adhesive layer; 7. Release film; 8. Sensor layer. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] As described in the background technology, although the existing cover structure can improve the optical performance of the glass cover to meet the diverse needs of modern high-tech products, it has limitations in thermal performance. In particular, when the product is used outdoors, the cover has poor thermal isolation effect. For example, when exposed to sunlight, the traditional glass cover is unable to cope with the situation. The product will overheat due to light, affecting the service life of the product and the user experience.

[0029] In order to solve this technical problem, the utility model provides a heat-insulating coating cover plate and a touch screen, which are applied in the field of display screens.

[0030] Specifically, please refer to Figure 1-3 The thermal insulation coating cover plate specifically includes a substrate 1, an optical coating layer is provided on the front side of the substrate 1, and a thermal insulation coating layer 2 is provided on the surface of the optical coating layer facing away from the substrate 1.

[0031] Please refer to Figure 4 The touch screen includes a heat-insulating coating cover plate, and a sensor layer 8 is provided on the back of the substrate 1. The sensor layer 8 is bonded and fixed to the substrate 1 through a heat-absorbing optical adhesive layer 6.

[0032] The heat-insulating coating cover and touch screen provided by the present invention form an optical interference layer by arranging an optical coating layer on the front surface of the substrate 1, which significantly reduces light reflection, increases transmittance, and improves the anti-reflection and light filtering optical properties of the cover. The heat-insulating coating layer 2 on the surface has a good thermal isolation function, which improves the thermal isolation performance of the cover, helps to reduce heat transfer, protects the product from overheating damage, and increases the service life of the electronic product. At the same time, the coating layer structure can improve the durability and wear resistance of the cover, protect the cover surface from chemical corrosion, and increase the service life of the cover.

[0033] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] Please refer to Figure 1-2 , provides a heat-insulating coating cover plate, which includes a substrate 1, an optical coating layer is provided on the front side of the substrate 1, and a heat-insulating coating layer 2 is provided on the surface of the optical coating layer facing away from the substrate 1.

[0037] The substrate 1 is a transparent glass plate. When the substrate 1 is used in a display device, it can also be made of other materials with high light transmittance.

[0038] The optical coating layer has a six-layer structure, which is formed by alternating three layers of titanium dioxide coating layer 3 and silicon dioxide coating layer 4, and the silicon dioxide coating layer 4 is adhered to the surface of the substrate 1. The silicon dioxide coating layer 4 is plated on the surface of the titanium dioxide coating layer 3. Silicon dioxide is a commonly used optical thin film material with high transparency and good chemical stability. It can also be used as an adhesion layer and an optical adjustment layer. Titanium dioxide has a high refractive index and good optical properties and can be used to enhance or weaken light within a specific wavelength range. Titanium dioxide has strong scattering and absorption capabilities for light, especially strong shielding against ultraviolet rays. It can effectively shield ultraviolet rays in light when exposed to sunlight, and play an anti-reflection and light filtering role.

[0039] The titanium dioxide coating layer 3 and the silicon dioxide coating layer 4 each have a thickness of 70-100 nanometers. By alternating these layers of specific thickness to form an optical coating layer, the optical coating layer utilizes the difference in refractive index between the different materials to create an optical interference effect, significantly reducing light reflection and increasing transmittance. Furthermore, the stacked titanium dioxide coating layer 3 and silicon dioxide coating layer 4 are chemically stable, effectively improving the cover's acid and alkali resistance. Their high hardness and melting and boiling points provide excellent durability, abrasion resistance, and high-temperature resistance, extending the life of the glass cover.

[0040] The thermal insulation coating layer 2 is a lead telluride coating layer, and the thickness of the lead telluride coating layer is 50-150 nanometers. PbTe, as a thermoelectric material, can play a thermal isolation effect after the lead telluride coating layer is formed, reducing heat transfer to the interior of the product through the substrate 1, and protecting the product from overheating damage.

[0041] A black ink layer 5 is provided on the back of the substrate 1. The thickness of the black ink layer 5 is 10-12 microns. The substrate 1 includes a visible area and a non-visual area. The black ink layer 5 is provided in the non-visual area. The black ink layer 5 can play a light-shielding effect. Of course, the black ink layer 5 can also be replaced with other light-shielding layer structures such as black light-shielding paper. The black ink layer 5 is screen-printed on the back of the substrate 1 with black ink.

[0042] The thermal insulation coating cover provided in Example 1 is further optimized, specifically, as Figure 3As shown, a heat-absorbing optical adhesive layer 6 is provided on the back of the substrate 1, and a release film 7 is provided on the surface of the heat-absorbing optical adhesive layer 6 facing away from the substrate 1. The heat-absorbing optical adhesive layer 6 is an SCA adhesive layer. The heat-absorbing optical adhesive layer 6 not only acts as an adhesive but also serves the purpose of absorbing heat and insulating. It can absorb heat from inside and outside the product to improve the heat dissipation performance of the product, further improve the service life of the product, and improve the user's comfort.

[0043] A touch screen, such as Figure 4 As shown, the touch screen includes the heat-insulating coating cover plate in Example 2, and a sensor layer 8 is provided on the back of the substrate 1. The sensor layer 8 is an ITO layer, and the sensor layer 8 is bonded and fixed to the substrate 1 through a heat-absorbing optical adhesive layer 6.

[0044] The working principle of the heat-insulating coating cover and touch screen provided by the present invention is as follows: a titanium dioxide coating layer 3 and a silicon dioxide coating layer 4 are sequentially coated on the front side of a substrate 1 in an alternating stacking manner, and the coating is alternately performed three times to form an optical interference layer, which significantly reduces light reflection, improves transmittance, and improves the anti-reflection and light filtering optical properties of the cover. The heat-insulating coating layer 2 on the surface has a good thermal isolation function, which improves the thermal isolation performance of the cover, helps to reduce heat transfer, protects products from overheating damage, and increases the service life of electronic products. At the same time, the coating layer structure can improve the durability and wear resistance of the cover, protect the surface of the cover from chemical corrosion, and increase the service life of the cover.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the present invention patent.

Claims

1. A thermal insulation coating cover plate, comprising a substrate, characterized in that: An optical coating layer is provided on the front side of the substrate, and a thermal insulation coating layer is provided on the surface of the optical coating layer facing away from the substrate. The optical coating layer has a six-layer structure, formed by alternating three layers of titanium dioxide coating layers and silicon dioxide coating layers, and the silicon dioxide coating layer is bonded to the surface of the substrate. The thermal insulation coating layer is a lead telluride coating layer.

2. The thermal insulation coating cover plate according to claim 1, characterized in that: The substrate is a transparent glass plate.

3. The thermal insulation coating cover plate according to claim 1, characterized in that: The thickness of the titanium dioxide coating layer and the silicon dioxide coating layer are both 70-100 nanometers.

4. The thermal insulation coating cover plate according to claim 1, characterized in that: The thickness of the lead telluride coating layer is 50-150 nanometers.

5. The thermal insulation coating cover plate according to claim 1, characterized in that: A black ink layer is provided on the back of the substrate, and the thickness of the black ink layer is 10-12 microns.

6. The thermal insulation coating cover plate according to claim 5, characterized in that: The substrate comprises a visible area and a non-visual area, and the black ink layer is arranged in the non-visual area.

7. The thermal insulation coating cover plate according to claim 1, characterized in that: A heat-absorbing optical adhesive layer is provided on the back side of the substrate, and a release film is provided on the surface of the heat-absorbing optical adhesive layer facing away from the substrate.

8. A touch screen, characterized in that: It comprises the heat-insulating coated cover plate as described in any one of claims 1 to 7, wherein a sensor layer is provided on the back of the substrate, and the sensor layer is bonded and fixed to the substrate via a heat-absorbing optical adhesive layer.

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