Electromagnetic shielding glass structure

Abstract

The utility model discloses an electromagnetic shielding glass structure which comprises electromagnetic shielding glass and a copper foil. The electromagnetic shielding glass comprises a cover plate, optical cement and a shielding film. The cover plate and the shielding film are connected through the optical cement; the shielding film is composed of a transparent base material and a metal grid. And the copper foil is used for wrapping the electromagnetic shielding glass. The shielding film with high light transmittance and high shielding effectiveness is adopted, the shielding film is composed of the transparent base material and the metal grid, and meanwhile, the metal grid is attached to the back face of the cover plate through the optical cement, so that poor appearance or function caused by oxidation in the transportation or use process is avoided, the appearance integrity of the electromagnetic shielding glass is effectively improved, and the service life of the electromagnetic shielding glass is prolonged. And the performance of the product is more stable. According to the utility model, extra water-proof and oxygen-proof protection and additional arrangement of an AR film are not needed, so that the cost is well controlled; in addition, the transmittance of the metal grids is high, the visual effect and the shielding performance are more excellent, and the application scene of the electromagnetic shielding glass can be effectively widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to electromagnetic shielding glass technical field more specifically, especially, it relates to a kind of electromagnetic shielding glass structure. BACKGROUND

[0002] Electromagnetic shielding glass is a kind of light-transmitting shielding device for preventing electromagnetic radiation and resisting electromagnetic interference, mainly used to solve electromagnetic interference between electronic systems and electronic equipment, prevent electromagnetic information leakage, protect electromagnetic radiation pollution, ensure normal operation of instruments and equipment, and ensure personnel health in many scenes, widely used in communication, IT, power, medical, bank, securities, government, army and other civil and national defense fields.The existing electromagnetic shielding glass mainly has the following several types:wire mesh, coating and pasting electromagnetic shielding film.Wire mesh shielding glass: the wire diameter is relatively thick, the transmittance is low, the visual effect is poor, and it is not conducive to display window application scene;Coated glass: after coating, silk printing silver paste is formed around, it cannot be formed at one time, and in order to ensure the good transmittance of electromagnetic shielding glass, the thickness of the film layer is only several tens of nanometers, and the shielding efficiency is limited;Electromagnetic shielding film: in the prior art, the metal conductive layer is opposite to the liquid crystal module, and when the whole machine is a frame pasting structure, optical adhesive is additionally used to protect the conductive surface from water and oxygen, the multi-layer structure leads to the decrease of the transmittance of electromagnetic shielding glass, and expensive AR film is necessary, which increases the material cost. SUMMARY

[0003] The utility model provides a kind of electromagnetic shielding glass structure to solve the problems raised in the above background technology.To achieve the above purpose, the utility model provides the following technical scheme: a kind of electromagnetic shielding glass structure, including electromagnetic shielding glass and copper foil;The electromagnetic shielding glass includes cover plate, optical adhesive and shielding film;The cover plate is connected between the shielding film by the optical adhesive;The shielding film is composed of transparent substrate and metal grid, and the metal grid is located between the optical adhesive and the transparent substrate;The copper foil is used to edge the electromagnetic shielding glass.

[0004] Preferably, the metal grid is a grid structure composed of metal wires, and the metal wires are made of any two or more metal materials selected from gold, silver, copper, aluminum, nickel, cobalt, palladium and iron.

[0005] Preferably, the grid structure is formed by arranging a plurality of periodic grid patterns;The grid pattern is any one or a combination of more than one of a circle, a quadrilateral and a polygon.

[0006] Preferably, the wire diameter of the metal wire is 2-8 um, and the mesh number of the grid structure is 85-250.

[0007] Preferably, the metal grid is formed by subtractive process or additive process.

[0008] Preferably, the surface of the metal mesh is formed with a blackening layer, and the b* value of the blackening layer when its color is converted into the CIE (L*a*b*) color system is < 1.

[0009] Preferably, the transparent substrate is a flexible transparent substrate, and the flexible transparent substrate is any one of PET, PEN or COP, and the thickness of the flexible transparent substrate is 25-250 um.

[0010] Preferably, the cross section of the cover plate is a rectangular structure, and the rectangular structure comprises a central visible area; the size of the optical glue is extended outward by 3 mm or more than the size of the central visible area; and the size of the shielding film is extended outward by 2 mm or more than the size of the optical glue.

[0011] Preferably, the thickness of the copper foil is 10-66 um, and the width of the copper foil is 4-10 mm.

[0012] Preferably, the optical glue is acrylic optical glue or silicon acrylic optical glue; and the optical glue satisfies the following conditional expression: T1*D ≥ 2*T2, wherein T1 is the thickness of the optical glue, D is the filling coefficient of the optical glue, and T2 is the thickness of the copper foil.

[0013] Compared with the prior art, the electromagnetic shielding glass structure has the following beneficial effects: the shielding film has high light transmittance and high shielding efficiency, the shielding film is composed of a transparent substrate and a metal mesh, the metal mesh is attached to the back surface of the cover plate by using optical glue, appearance or function defects caused by oxidation during transportation or use are avoided, the appearance integrity of the electromagnetic shielding glass is effectively improved, and the performance of the product is more stable. The electromagnetic shielding glass structure does not need to be additionally protected from water and oxygen and does not need to additionally add an AR film, and the cost is well controlled. In addition, the metal mesh has high transmittance, the visual effect and shielding performance are more excellent, and the application scenarios of the electromagnetic shielding glass can be effectively widened. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 4 is a side sectional view of the electromagnetic shielding glass structure of the embodiment of the present application;

[0015] Figure 2 FIG. 5 is a front view of the electromagnetic shielding glass structure of the embodiment of the present application;

[0016] In Figure 1 and Figure 2 , the corresponding relationship between the names of the components and the figure numbers is as follows:

[0017] 1-copper foil, 2-cover plate, 3-optical glue, 4-transparent substrate, 5-metal mesh. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments, and the accompanying drawings are only used for reference and do not limit the embodiments of the present application. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0019] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] Please refer to Figure 1 and Figure 2 The present application provides a kind of electromagnetic shielding glass structure, including electromagnetic shielding glass and copper foil 1;The electromagnetic shielding glass includes cover plate 2, optical adhesive 3 and shielding film;The cover plate 2 is connected between the shielding film by the optical adhesive 3;The shielding film is composed of transparent substrate 4 and metal grid 5, the metal grid 5 is located between the optical adhesive 3 and the transparent substrate 4;The copper foil 1 is used to edge the electromagnetic shielding glass.

[0022] Compared with the prior art, the metal conductive layer is opposite to the liquid crystal module, and the whole machine is a frame structure, which needs to use optical adhesive 3 layer to protect the conductive surface from water and oxygen, in the embodiments of the present application, metal grid 5 is arranged on transparent substrate 4, then shielding film is directly pasted on cover plate 2 by optical adhesive 3, metal grid 5 faces cover plate 2 and is directly bonded with optical adhesive 3. Through the above structure, the transparent substrate 4 has good light transmittance, the metal grid 5 has high shielding efficiency, the metal grid 5 is pasted with the back of the cover plate 2, to ensure that the whole electromagnetic shielding glass is good in appearance and stable in performance during transportation and use.

[0023] Preferably, the metal mesh 5 is a grid structure composed of metal wires made of any two or more of gold, silver, copper, aluminum, nickel, cobalt, palladium and iron. In this embodiment, the metal mesh 5 is made of conductive material composed of two or more of gold, silver, copper, aluminum, nickel, cobalt, palladium, iron.

[0024] Preferably, the grid structure is formed by a plurality of periodic grid patterns; the grid pattern is any one or a combination of more than one of a circle, a quadrilateral, a polygon. In this embodiment, the quadrilateral includes irregular quadrilaterals, and the polygon includes irregular polygons, which can be selected as one or a combination of more than one to reduce diffraction and obtain better optical performance.

[0025] Preferably, the wire diameter of the metal wire is 2-8um, and the mesh number of the grid structure is 85-250. In order to improve the visual effect, the wire diameter of the metal wire in this embodiment is controlled to be 2-8um, so that the human eye cannot perceive the metal mesh 5.

[0026] Preferably, the metal mesh 5 is formed by subtractive process or additive process.

[0027] Preferably, the surface of the metal mesh 5 is formed with a blackening layer, and the b* value of the blackening layer when converted into the CIE (L*a*b*) color system is <1. In this embodiment, a blackening layer is formed on the surface of the metal mesh 5 by blackening treatment, and the blackening layer reduces the surface reflectivity of the metal mesh 5, so that the starburst effect is difficult to perceive even under light diffraction conditions, and the display effect is improved.

[0028] Preferably, the transparent substrate 4 is a flexible transparent substrate 4, which is any one of PET, PEN or COP, and the thickness is 25-250um.

[0029] Preferably, the cross section of the cover plate 2 is a rectangular structure, which includes a central visible area; the size of the optical adhesive 3 is expanded by 3mm or more than the size of the central visible area; and the size of the shielding film is expanded by 2mm or more than the size of the optical adhesive 3.

[0030] Preferably, the thickness of the copper foil 1 is 10-66um, and the width is 4-10mm. In this embodiment, the copper foil 1 can be applied according to the actual project requirements. Half of the width is attached to the metal mesh 5, and the other half is folded to the back.

[0031] Preferably, the optical glue 3 is acrylic optical glue 3 or silicon acrylic optical glue 3; the optical glue 3 satisfies the following conditional formula: T1*D>=2*T2, wherein T1 is the thickness of the optical glue 3, D is the filling coefficient of the optical glue 3, and T2 is the thickness of the copper foil 1. Through the above structural arrangement, the height of the copper foil 1 and the optical glue 3 can be avoided to cause appearance defects such as bubbles.

[0032] Compared with the prior art, the electromagnetic shielding glass has the advantages that: the shielding film has high light transmittance and high shielding efficiency, the shielding film is composed of a transparent base material and a metal mesh, the metal mesh is attached to the back surface of the cover plate by using optical glue, appearance or function defects caused by oxidation during transportation or use are avoided, the appearance integrity of the electromagnetic shielding glass is effectively improved, and the performance of the product is more stable.

[0033] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An electromagnetic shielding glass structure, characterized in that, It includes electromagnetic shielding glass and copper foil (1); the electromagnetic shielding glass includes a cover plate (2), optical adhesive (3) and shielding film; the cover plate and the shielding film are connected by the optical adhesive; the shielding film is composed of a transparent substrate (4) and a metal mesh (5), the metal mesh being located between the optical adhesive and the transparent substrate; the copper foil is used to edge the electromagnetic shielding glass.

2. The electromagnetic shielding glass structure according to claim 1, characterized in that, The metal mesh is a mesh-like structure composed of metal wires.

3. The electromagnetic shielding glass structure according to claim 2, characterized in that, The grid-like structure is formed by arranging multiple periodic grid patterns; the grid pattern is any one or a combination of circles, quadrilaterals, and polygons.

4. The electromagnetic shielding glass structure according to claim 2, characterized in that, The diameter of the metal wire is 2~8um, and the mesh count of the mesh structure is 85~250.

5. The electromagnetic shielding glass structure according to claim 2, characterized in that, The metal mesh is formed by a subtractive or additive manufacturing process.

6. The electromagnetic shielding glass structure according to claim 1, characterized in that, The surface of the metal mesh is covered with a blackening layer, and the b* value of the blackening layer when converted to the CIE (L*a*b*) color system is less than 1.

7. The electromagnetic shielding glass structure according to claim 1, characterized in that, The transparent substrate is a flexible transparent substrate, which is any one of PET, PEN or COP, and its thickness is 25~250um.

8. The electromagnetic shielding glass structure according to claim 1, characterized in that, The cover plate has a rectangular cross-section, including a central visible area; the size of the optical adhesive is 3mm or more larger than the size of the central visible area; the size of the shielding film is 2mm or more larger than the size of the optical adhesive.

9. The electromagnetic shielding glass structure according to claim 1, characterized in that, The copper foil has a thickness of 10~66um and a width of 4~10mm.

10. The electromagnetic shielding glass structure according to claim 1, characterized in that, The optical adhesive is an acrylic optical adhesive or a silicone propylene optical adhesive; the optical adhesive satisfies the following condition: T1*D≥2*T2, where T1 is the thickness of the optical adhesive, D is the filling coefficient of the optical adhesive, and T2 is the thickness of the copper foil.

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