Protective cover plate capable of shielding ultraviolet rays

Abstract

The utility model discloses a protective cover plate capable of shielding ultraviolet rays. The protective cover plate comprises a first glass substrate and a second glass substrate, the ultraviolet shielding layer is arranged on the surface of one side, facing the second glass substrate, of the first glass substrate; the glass connecting layer is arranged on the surface of one side, facing the second glass substrate, of the first glass substrate and surrounds the periphery of the ultraviolet shielding layer; the first glass substrate, the second glass substrate and the glass connecting layer are made of glass of the same type, and the glass connecting layer is respectively welded and fixed with the first glass substrate and the second glass substrate. The protective cover plate can shield ultraviolet rays and is provided with an ultraviolet shielding layer which is not in contact with the outside.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cover plate technology especially relates to a protective cover plate of shielding ultraviolet rays. BACKGROUND

[0002] The protective cover plate of electronic product not only protects the product structure physically, but also can block ultraviolet rays, with the improvement of people's outdoor activities, the ability of resisting ultraviolet rays of electronic product is more and more obvious. Taking the automobile central control protective cover plate as an example, it is often irradiated by ultraviolet rays, and the internal electronic device will be ultraviolet aged, and more seriously, cause function failure.

[0003] In order to solve the above technical problem, the prior art sets a layer of ultraviolet shielding layer on the surface of the protective cover plate, which absorbs, scatters or refracts ultraviolet rays, and shields ultraviolet rays to avoid ultraviolet aging and function failure of the internal electronic device of the electronic product.

[0004] However, the ultraviolet shielding layer is exposed on the surface of the protective cover plate for a long time, which is easy to be scratched by external objects, and the ultraviolet shielding layer is also easy to be eroded by water vapor in the environment for a long time, resulting in peeling and other problems. UTILITY MODEL CONTENT

[0005] In order to solve the above technical problem of the prior art, the utility model provides a protective cover plate which can shield ultraviolet rays and has an ultraviolet shielding layer not in contact with the outside world.

[0006] The technical problem to be solved by the utility model is solved by the following technical scheme:

[0007] A protective cover plate capable of shielding ultraviolet rays comprises:

[0008] A first glass substrate and a second glass substrate;

[0009] An ultraviolet shielding layer is arranged on one side surface of the first glass substrate facing the second glass substrate;

[0010] A glass connecting layer is arranged on one side surface of the first glass substrate facing the second glass substrate, and surrounds the periphery of the ultraviolet shielding layer;

[0011] The first glass substrate, the second glass substrate and the glass connecting layer are the same type of glass, and the glass connecting layer is respectively fused and fixed with the first glass substrate and the second glass substrate.

[0012] Further, the first glass substrate, the second glass substrate and the glass connecting layer are silicate glass, borate glass, potassium calcium glass or quartz glass.

[0013] Further, the thickness of the ultraviolet shielding layer and the glass connecting layer is the same.

[0014] Further, the thickness of the ultraviolet shielding layer and the glass connecting layer is between 10-100nm.

[0015] Further, the ultraviolet shielding layer is a titanium dioxide layer, a zinc oxide layer, an aluminum oxide layer, a germanium oxide layer, a cerium oxide layer or a neodymium oxide layer.

[0016] Further, the first glass substrate has a visual area and a peripheral area surrounding the visual area; the ultraviolet shielding layer is located in the visual area, and the glass connecting layer is located in the peripheral area.

[0017] Further, the protective cover further comprises an opacifying ink layer, which is arranged on the side surface of the first glass substrate away from the second glass substrate and located in the peripheral area.

[0018] Further, the protective cover further comprises a visible light anti-reflection layer, which is arranged on the side surface of the second glass substrate away from the first glass substrate.

[0019] Further, the visible light anti-reflection layer is a magnesium fluoride layer, a lead sulfide layer, a lead selenide layer or a diniobium pentoxide layer.

[0020] Further, the thickness of the visible light anti-reflection layer is between 50-120nm.

[0021] The protective cover of the utility model has the following beneficial effects: the protective cover of the utility model sandwiches the ultraviolet shielding layer between the first glass substrate and the second glass substrate, and sets the glass connecting layer on the periphery of the ultraviolet shielding layer, after the glass connecting layer is respectively fused and fixed with the first glass substrate and the second glass substrate, the ultraviolet shielding layer is sealed between the first glass substrate and the second glass substrate, so that the ultraviolet shielding layer does not contact with the outside world, thereby avoiding that the ultraviolet shielding layer is scratched by external objects or eroded by water vapor, etc., and improving product stability. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The utility model provides a protective cover's stacking structure schematic diagram.

[0023] Figure 2 The utility model provides a protective cover's ultraviolet shielding layer and glass connecting layer's plane structure schematic diagram.

[0024] Figure 3 The utility model provides a protective cover's first glass substrate's plane structure schematic diagram.

[0025] Figure 4 Another protective cover plate stacking structure schematic diagram provided by the utility model is shown in the figure. DETAILED DESCRIPTION

[0026] The utility model will be explained in detail below by combining with the drawings and examples, the examples of the examples are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The examples described below by referring to the drawings are exemplary and are intended to explain the utility model and cannot be understood as limiting the utility model.

[0027] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as limiting the utility model.

[0028] In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second", "third" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0029] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0030] Example one

[0031] As shown in Figure 1 and 2 A protective cover plate capable of shielding ultraviolet rays comprises:

[0032] A first glass substrate 1 and a second glass substrate 2;

[0033] An ultraviolet shielding layer 3 is arranged on one side surface of the first glass substrate 1 facing the second glass substrate 2.

[0034] A glass connecting layer 4 is arranged on one side surface of the first glass substrate 1 facing the second glass substrate 2 and surrounds the periphery of the ultraviolet shielding layer 3.

[0035] The first glass substrate 1, the second glass substrate 2 and the glass connecting layer 4 are the same type of glass, and the glass connecting layer 4 is respectively fused and fixed with the first glass substrate 1 and the second glass substrate 2.

[0036] The protective cover plate of the utility model discloses the ultraviolet shielding layer 3 is clamped between the first glass substrate 1 and the second glass substrate 2, and the glass connecting layer 4 is arranged on the periphery of the ultraviolet shielding layer 3, after the glass connecting layer 4 is respectively fused and fixed with the first glass substrate 1 and the second glass substrate 2, the ultraviolet shielding layer 3 is sealed between the first glass substrate 1 and the second glass substrate 2, so that the ultraviolet shielding layer 3 does not contact with the outside, so as to avoid that the ultraviolet shielding layer 3 is scratched or eroded by water vapor, etc., improve product stability.

[0037] In preparation, the ultraviolet shielding layer 3 and the glass connecting layer 4 can be sequentially made and attached to one side surface of the first glass substrate 1, then the second glass substrate 2 is relatively covered on one side surface of the first glass substrate 1 attached with the ultraviolet shielding layer 3 and the glass connecting layer 4, finally a fusion mold is used to locally heat the periphery of the first glass substrate 1 and the second glass substrate 2, and heat is transferred to the glass connecting layer 4 through the first glass substrate 1 and the second glass substrate 2, so that the periphery of the first glass substrate 1 and the second glass substrate 2 is fused together with the glass connecting layer 4.

[0038] The first glass substrate 1, the second glass substrate 2 and the glass connecting layer 4 are the same type of glass, which can ensure that the melting points of the three are the same or similar, so as to avoid affecting the fusion efficiency and fusion success rate due to asynchronous melting of the three when fusing.

[0039] In the embodiment, the first glass substrate 1, the second glass substrate 2 and the glass connecting layer 4 are silicate glass, borate glass, potassium calcium glass or quartz glass, etc.

[0040] Most preferably, the first glass substrate 1, the second glass substrate 2 and the glass connecting layer 4 are the same in composition.

[0041] The thickness of the ultraviolet shielding layer 3 and the glass connecting layer 4 is the same. In the embodiment, the thickness of the ultraviolet shielding layer 3 and the glass connecting layer 4 is between 10-100nm.

[0042] Preferably, the ultraviolet shielding layer 3 is a metal oxide layer with the characteristics of absorbing, scattering or refracting ultraviolet rays, etc. The metal oxide layer has a high melting point, and can not be damaged by high temperature when the first glass substrate 1, the second glass substrate 2 and the glass connecting layer 4 are heated and fused.

[0043] In this embodiment, the ultraviolet shielding layer 3 is a titanium dioxide layer, a zinc oxide layer, an aluminum oxide layer, a germanium oxide layer, a cerium oxide layer or a neodymium oxide layer, which is attached to one side surface of the first glass substrate 1 by magnetron sputtering, vacuum evaporation or vapor deposition, etc.

[0044] Similarly, the glass connecting layer 4 can also be attached to one side surface of the first glass substrate 1 by magnetron sputtering, vacuum evaporation or vapor deposition, etc.

[0045] As shown in Figure 3 The first glass substrate 1 has a visual area 11 and a peripheral area 12, and the peripheral area 12 surrounds the visual area 11. When used with a display screen, the visual area 11 corresponds to the display area of the display screen, and the peripheral area 12 corresponds to the frame area of the display screen.

[0046] The ultraviolet shielding layer 3 is located in the visual area 11, and the glass connecting layer 4 is located in the peripheral area 12. The glass connecting layer 4 can be recessed by 0.1-0.2mm on each side compared to the peripheral area 12 of the first glass substrate 1, so that the ultraviolet shielding layer 3 is extended by 0.1-0.2mm on each side compared to the visual area 11 of the first glass substrate.

[0047] The protective cover plate further comprises a light shielding ink layer 5, which is arranged on one side surface of the first glass substrate 1 away from the second glass substrate 2 and located in the peripheral area 12.

[0048] The light shielding ink layer 5 is used to define the visual area 11 and the peripheral area 12 of the first glass substrate 1 on the first glass substrate 1, so as to facilitate the bonding of the protective cover plate and the display screen.

[0049] In this embodiment, the light shielding ink layer 5 is black ink, and the thickness is between 1-4μm.

[0050] Embodiment Two

[0051] As an optimization of embodiment one, in this embodiment, as Figure 4As shown, the protective cover plate further comprises a visible light antireflection layer 6 arranged on the side surface of the second glass substrate 2 away from the first glass substrate 1, so as to improve the transmittance of the protective cover plate and improve the display effect.

[0052] In the embodiment, the visible light antireflection layer 6 is a magnesium fluoride layer, a lead sulfide layer, a lead selenide layer or a niobium pentoxide layer, etc., and the thickness is between 50-120nm.

[0053] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them. Although the embodiments of the present application have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the embodiments of the present application can still be modified or replaced by equivalents, and these modifications or replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A protective cover plate capable of shielding ultraviolet rays, characterized by comprising: The protective cover plate comprises: a first glass substrate and a second glass substrate; an ultraviolet shielding layer disposed on a side surface of the first glass substrate facing the second glass substrate; a glass connecting layer disposed on a side surface of the first glass substrate facing the second glass substrate and surrounding the periphery of the ultraviolet shielding layer; the first glass substrate, the second glass substrate and the glass connecting layer are the same type of glass, and the glass connecting layer is fused and fixed with the first glass substrate and the second glass substrate respectively.

2. The guard cover of claim 1, wherein, The first glass substrate, the second glass substrate and the glass connecting layer are silicate glass, borate glass, potassium calcium glass or quartz glass.

3. The guard cover of claim 1, wherein, The thickness of the ultraviolet shielding layer and the glass connecting layer is the same.

4. The guard cover plate of claim 1 or 3, wherein, The thickness of the ultraviolet shielding layer and the glass connecting layer is between 10-100nm.

5. The guard cover of claim 1, wherein, The ultraviolet shielding layer is a titanium dioxide layer, a zinc oxide layer, an aluminum oxide layer, a germanium oxide layer, a cerium oxide layer or a neodymium oxide layer.

6. The guard cover of claim 1, wherein, The first glass substrate has a visual area and a peripheral area surrounding the visual area; the ultraviolet shielding layer is located in the visual area, and the glass connecting layer is located in the peripheral area.

7. The guard cover of claim 6, wherein, The protective cover plate further comprises a light shielding ink layer disposed on a side surface of the first glass substrate away from the second glass substrate and located in the peripheral area.

8. The guard cover of claim 1, wherein, The protective cover plate further comprises a visible light anti-reflection layer disposed on a side surface of the second glass substrate away from the first glass substrate.

9. The guard cover of claim 8, wherein, The visible light anti-reflection layer is a magnesium fluoride layer, a lead sulfide layer, a lead selenide layer or a niobium pentoxide layer.

10. A guard cover according to claim 8 or 9, characterised in that, The thickness of the visible light anti-reflection layer is between 50-120nm.

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