Touch screen capable of insulating heat and protective cover plate thereof

Abstract

The utility model discloses a protective cover plate capable of insulating heat. The protective cover plate comprises an outer side glass substrate and an inner side glass substrate which are oppositely arranged, the vacuum layer is arranged between the outer side glass substrate and the inner side glass substrate; and the peripheral sealant is arranged between the outer side glass substrate and the inner side glass substrate and surrounds the periphery of the vacuum layer, so that the outer side glass substrate and the inner side glass substrate are relatively sealed and fixed. The protective cover plate can effectively isolate heat transfer. The utility model further discloses a touch screen which comprises the protective cover plate.

Description

Technical Field

[0001] The utility model relates to touch screen technology, in particular to a heat-insulating touch screen and a protective cover plate thereof. Background Art

[0002] Current electronic display screens have gradually entered all aspects of people's lives. As the current electronic display screens become more and more intelligent, the human-computer interaction system is constantly improving, which makes the use of capacitive touch screens more and more extensive. Electronic display screens or display screens with touch functions are often used in many outdoor environments. Since the outdoor environment is relatively harsh, most of them are exposed to sunlight and high temperature environments, which leads to a reduction in the durability of the display screen. At the same time, due to the influence of high temperature, electronic equipment such as display electronic screens are prone to malfunction, and the temperature increase makes it inconvenient for users to operate.

[0003] In summary, the present invention provides a heat-insulating touch screen, so that electronic products such as electronic display screens will not be greatly affected by sunlight and high temperatures when used outdoors, thereby not causing the electronic products to heat up. This can increase the service life of the electronic products and further reduce the user's discomfort caused by hot hands when using them, giving the user a good user experience. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a heat-insulating touch screen and a protective cover thereof, which can effectively isolate the transfer of heat.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A heat-insulating protective cover comprising:

[0007] An outer glass substrate and an inner glass substrate are arranged opposite to each other;

[0008] a vacuum layer, disposed between the outer glass substrate and the inner glass substrate;

[0009] The peripheral sealant is arranged between the outer glass substrate and the inner glass substrate and surrounds the periphery of the vacuum layer to seal and fix the outer glass substrate and the inner glass substrate relative to each other.

[0010] Furthermore, the thickness of the vacuum layer is 0.3-0.7 mm.

[0011] Furthermore, the thickness of the outer glass substrate and the inner glass substrate is 0.5-1.0 mm.

[0012] Furthermore, an infrared cutoff layer is provided on the surface of the outer glass substrate facing the inner glass substrate, or on the surface of the inner glass substrate facing the outer glass substrate.

[0013] Furthermore, the infrared cutoff layer is a cadmium stannate film layer, a nano-ATO film layer or a cadmium selenide film layer.

[0014] Furthermore, the thickness of the infrared cutoff layer is between 200-300 nm.

[0015] Furthermore, the protective cover has a display area and a frame area, and the frame area surrounds the display area; the protective cover also includes a light-shielding ink layer, which is arranged on the side surface of the inner glass substrate facing away from the outer glass substrate, and covers the frame area while avoiding the display area.

[0016] Furthermore, the light-shielding ink layer is BM black ink.

[0017] Furthermore, at least one of the outer glass substrate and the inner glass substrate is tempered glass.

[0018] A touch screen comprises a sensor layer and the above-mentioned protective cover plate, wherein the sensor layer is arranged on an inner glass substrate of the protective cover plate.

[0019] The utility model has the following beneficial effects: the protective cover of the utility model is formed by the outer glass substrate and the inner glass substrate, and the outer glass substrate and the inner glass substrate are separated by the vacuum layer. Since the outer glass substrate and the inner glass substrate are not in direct contact with each other, heat cannot be transferred between the outer glass substrate and the inner glass substrate by heat conduction. Moreover, since there is no medium in the vacuum layer, heat cannot be transferred between the outer glass substrate and the inner glass substrate by convection. Therefore, the heat in the external environment can be isolated from being transferred to the touch screen by heat conduction and convection, thereby ensuring the stability of the touch screen in outdoor high-temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the stacking structure of the protective cover plates provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the front structure of the protective cover provided by the utility model.

[0022] Figure 3 This is a schematic diagram of the stacking structure of another protective cover provided by the present invention.

[0023] Figure 4This is a schematic diagram of the stacking structure of another protective cover provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the stacking structure of the touch screen provided by the present invention. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0028] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] Example 1

[0030] like Figure 1 and 2 As shown, a heat-insulating protective cover comprises:

[0031] An outer glass substrate 21 and an inner glass substrate 22 are arranged opposite to each other;

[0032] A vacuum layer 23 is provided between the outer glass substrate 21 and the inner glass substrate 22;

[0033] The peripheral sealant 24 is disposed between the outer glass substrate 21 and the inner glass substrate 22 and surrounds the periphery of the vacuum layer 23 to seal and fix the outer glass substrate 21 and the inner glass substrate 22 relative to each other.

[0034] There are three basic forms of heat transfer: conduction, convection and radiation.

[0035] Thermal conduction is the process by which heat is transferred through molecular vibrations and electron motion within a medium such as a solid, liquid, or gas. It occurs when objects of different temperatures come into contact, with heat transferring from the higher-temperature object to the lower-temperature object until their temperatures reach equalization. Convection is the process by which heat is transferred within a fluid (liquid or gas) as the fluid flows. It typically occurs when the fluid comes into contact with a solid surface, transferring heat from the solid surface into the fluid. The fluid expands due to heat, decreasing its density and rising. The colder fluid then takes its place, creating a circulating flow of the fluid and thus transferring heat. Radiation is the process by which heat is transferred in the form of electromagnetic waves. Any object emits electromagnetic waves due to its temperature. These waves carry heat through space, and when these waves are absorbed by other objects, the heat is transferred. Radiation does not require a medium and can occur in a vacuum.

[0036] The protective cover of the present invention is formed by the outer glass substrate 21 and the inner glass substrate 22, and the outer glass substrate 21 and the inner glass substrate 22 are separated by the vacuum layer 23. Since the outer glass substrate 21 and the inner glass substrate 22 are not in direct contact with each other, heat cannot be transferred between the outer glass substrate 21 and the inner glass substrate 22 by thermal conduction. Moreover, since there is no medium in the vacuum layer 23, heat cannot be transferred between the outer glass substrate 21 and the inner glass substrate 22 by convection. Therefore, the heat in the external environment can be isolated from being transferred to the touch screen by both thermal conduction and convection, thereby ensuring the stability of the touch screen in outdoor high-temperature environments.

[0037] Preferably, the thickness of the vacuum layer 23 is 0.3-0.7 mm, and the thickness of the outer glass substrate 21 and the inner glass substrate 22 is 0.5-1.0 mm.

[0038] At least one of the outer glass substrate 21 and the inner glass substrate 22 is made of tempered glass. Optimally, both the outer glass substrate 21 and the inner glass substrate 22 are made of tempered glass to improve the resistance of the protective cover to atmospheric pressure.

[0039] like Figure 2 As shown, the protective cover has a display area and a frame area, and the frame area surrounds the display area.

[0040] The protective cover further includes a light-shielding ink layer 25 , which is disposed on a surface of the inner glass substrate 22 facing away from the outer glass substrate 21 and covers the frame area while avoiding the display area to define the range of the display area.

[0041] Preferably, the light-shielding ink layer 25 is BM black ink, which is formed on the surface of the inner glass substrate 22 by screen printing and has a thickness of 1.8±0.3 um.

[0042] In this embodiment, the sealant 24 may be, but is not limited to, silicone sealant or epoxy resin.

[0043] Example 2

[0044] As an optimization solution of embodiment 1, in this embodiment, if Figure 3 and 4 As shown, an infrared cutoff layer 26 is further provided on the surface of the outer glass substrate 21 facing the inner glass substrate 22 , or on the surface of the inner glass substrate 22 facing the outer glass substrate 21 .

[0045] The protective cover of the present invention is provided with the infrared cutoff layer 26 on the surface of the outer glass substrate 21 or the inner glass substrate 22. The infrared cutoff layer 26 absorbs or reflects infrared radiation from the external environment to prevent heat from being transferred to the touch screen by radiation, thereby further ensuring the stability of the touch screen in outdoor high-temperature environments.

[0046] The infrared cutoff layer 26 is preferably, but not limited to, a cadmium stannate film layer, a nano-ATO film layer or a cadmium selenide film layer, with a thickness of 200-300 nm, and is formed on the surface of the outer glass substrate 21 or the inner glass substrate 22 by magnetron sputtering, vacuum evaporation, vapor deposition, etc.

[0047] Example 3

[0048] like Figure 5 As shown, a touch screen includes a sensor layer 1 and the protective cover plate 2 described in the first or second embodiment. The sensor layer 1 is arranged on the inner glass substrate 22 of the protective cover plate 2.

[0049] In this embodiment, the sensor layer 1 preferably adopts an optical touch sensor.

[0050] If the touch screen adopts an OGS structure, the sensor layer 1 is directly made on the inner glass substrate 22 of the protective cover 2. If the touch screen adopts a GG or GF structure, the sensor layer 1 is first made on a touch glass or touch film, and then the touch glass or touch film with the sensor layer 1 is bonded to the inner glass substrate 22 of the protective cover 2 using OCA optical adhesive.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention rather than to limit them. Although the embodiments of the present invention are described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat-insulating protective cover, characterized in that: include: An outer glass substrate and an inner glass substrate are arranged opposite to each other; a vacuum layer, disposed between the outer glass substrate and the inner glass substrate; The peripheral sealant is arranged between the outer glass substrate and the inner glass substrate and surrounds the periphery of the vacuum layer to seal and fix the outer glass substrate and the inner glass substrate relative to each other.

2. The protective cover according to claim 1, wherein: The thickness of the vacuum layer is 0.3-0.7 mm.

3. The protective cover according to claim 1, wherein: The thickness of the outer glass substrate and the inner glass substrate is 0.5-1.0 mm.

4. The protective cover according to claim 1, wherein: An infrared cutoff layer is further provided on the surface of the outer glass substrate facing the inner glass substrate, or on the surface of the inner glass substrate facing the outer glass substrate.

5. The protective cover according to claim 4, wherein: The infrared cutoff layer is a cadmium stannate film layer, a nano-ATO film layer or a cadmium selenide film layer.

6. The protective cover according to claim 4 or 5, characterized in that: The thickness of the infrared cutoff layer is between 200-300 nm.

7. The protective cover according to claim 1, wherein: The protective cover has a display area and a frame area, and the frame area surrounds the display area; the protective cover also includes a light-shielding ink layer, which is arranged on the side surface of the inner glass substrate facing away from the outer glass substrate and covers the frame area while avoiding the display area.

8. The protective cover according to claim 7, wherein: The light-shielding ink layer is BM black ink.

9. The protective cover according to claim 1, wherein: At least one of the outer glass substrate and the inner glass substrate is tempered glass.

10. A touch screen, characterized in that: The invention comprises a sensor layer and the protective cover according to claim 1, wherein the sensor layer is arranged on an inner glass substrate of the protective cover.

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