Faraday cage having irregular metal pattern applied thereto

Abstract

The present invention relates to a faraday cage having an irregular metal pattern applied thereto, the faraday cage being configured to improve electromagnetic wave shielding characteristics while having electro-optical characteristics by having a conductive metal layer having an irregular pattern formed on a transparent substrate. According to the faraday cage having an irregular metal pattern applied thereto according to the present invention, by having the conductive metal layer having the irregular pattern formed on the transparent substrate, it is possible to improve electromagnetic wave shielding characteristics while having electro-optical characteristics.

Description

Faraday cage with irregular metal pattern

[0001] The present invention relates to a Faraday cage, and more particularly, to a Faraday cage having an irregular metal pattern applied thereto, which is implemented to have electro-optical properties and improve electromagnetic shielding properties by providing a conductive metal layer with an irregular pattern processed on a transparent substrate.

[0002] A Faraday cage is a box or enclosure designed to prevent the passage of electricity or electromagnetic waves. Typically made from processed metal plates, this structure is impervious to light, making it unsuitable for use in optical devices.

[0003] To ensure optical transparency, a method exists for laminating a metal mesh structure formed by etching onto a transparent substrate. However, to achieve excellent electrooptical properties, the mesh must be fine and dense, which is difficult to achieve.

[0004] To solve these problems, research has been conducted on a method of installing a filter with a fine metal pattern on a transparent substrate to exhibit both optical properties and electromagnetic shielding properties.

[0005] However, these conventional filters had a problem in that the metal pattern had a periodic regularity, which caused light scattering due to light interference and diffraction, which distorted the image and adversely affected the resolution.

[0006] The problem to be solved by the present invention is to provide a Faraday cage having an irregular metal pattern applied thereto, which is implemented to secure sufficient electromagnetic shielding power and also exhibit excellent optical effects by forming a metal layer having an irregular pattern formed on a transparent substrate.

[0007] In order to solve the above problem, a Faraday cage having an irregular metal pattern applied according to the present invention is characterized in that the Faraday cage is surrounded by at least one panel, wherein the panel comprises: a transparent substrate; and a metal layer having an irregularly shaped metal pattern formed by depositing a conductive metal on one surface of the substrate; and the electromagnetic shielding characteristics are improved by the irregularly shaped metal pattern.

[0008] It is preferable that the above-mentioned material comprises glass or a flexible polymer.

[0009] The shape of the above metal pattern may have an irregular shape by combining at least one or more shapes among polygons or circles including triangles, squares, pentagons, hexagons, octagons, decagons, and dodecagons made of continuous lines.

[0010] The above metal pattern may have an irregular shape formed by combining at least one or more shapes of polygons or circles including triangles, squares, pentagons, hexagons, octagons, decagons, and dodecagons made of continuous lines, and some of the shapes may overlap.

[0011] The shape of the above metal pattern may have an irregular shape by combining a plurality of sine curves or a plurality of cosine curves made of continuous lines.

[0012] The shape of the above metal pattern may be a jigsaw pattern having an irregular shape formed by combining multiple jigsaw lines.

[0013] It is preferable that the thickness of the above metal layer is 1 μm or less.

[0014] It is preferable that the continuous lines forming the metal pattern of the metal layer have a line width of 0.1 µm to 100 µm.

[0015] The metal forming the above metal pattern may include one or more elements selected from nickel (Ni), chromium (Cr), iron (Fe), copper (Cu), platinum (Pt), gold (Au), thallium (Ta), and titanium (Ti).

[0016] All of the continuous lines forming the metal pattern of the metal layer are electrically connected.

[0017] The above metal pattern can be formed by a dry etching method.

[0018] According to the Faraday cage to which an irregular metal pattern is applied according to the present invention, there is an advantage in that it has electro-optical properties and can improve electromagnetic shielding properties by providing a conductive metal layer with an irregular pattern processed on a transparent substrate.

[0019] Meanwhile, there is an advantage in that excellent electro-optical properties can be obtained by forming the width and thickness of lines that constitute an irregular metal pattern very finely using a dry etching device.

[0020] FIG. 1 illustrates a Faraday cage having an irregular metal pattern applied thereto according to one embodiment of the present invention.

[0021] Figure 2 illustrates a panel of a Faraday cage to which the irregular metal pattern illustrated in Figure 1 is applied.

[0022] FIG. 3 illustrates a Faraday cage having an irregular metal pattern applied thereto according to another embodiment of the present invention.

[0023] Figure 4 illustrates a panel of a Faraday cage to which the irregular metal pattern illustrated in Figure 3 is applied.

[0024] FIG. 5 illustrates a Faraday cage having an irregular metal pattern applied thereto according to another embodiment of the present invention.

[0025] Figure 6 illustrates a panel of a Faraday cage to which the irregular metal pattern illustrated in Figure 5 is applied.

[0026] FIG. 7 is a drawing for explaining the effect of a Faraday cage to which an irregular metal pattern according to the present invention is applied.

[0027] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0028] FIG. 1 illustrates a Faraday cage having an irregular metal pattern applied thereto according to one embodiment of the present invention, and FIG. 2 illustrates a panel of the Faraday cage having the irregular metal pattern shown in FIG. 1 applied thereto.

[0029] Referring to FIG. 1, a Faraday cage (100) having an irregular metal pattern applied according to one embodiment of the present invention includes a panel (110) having a transparent substrate (111) and a metal layer (112) formed by depositing a conductive metal on one surface of the substrate (111). The Faraday cage (100) has a predetermined space on the inside so that an electrical or optical device can be accommodated, and the space can be defined by at least one panel (110).

[0030] Although Fig. 1 shows that the cage is formed in a square box shape with each side composed of a panel (110), it is not necessarily limited to this, and it is sufficient if at least one side among the multiple sides constituting the cage is composed of a panel (110). In addition, depending on the embodiment, the shape of the panel (110) may also be a curved surface, and the curved surface does not necessarily have to be a rigid, regular shape, and may be formed by deformation of a flexible or soft sheet.

[0031] Additionally, in the embodiment, the metal layer (112) is formed on the outer surface of each panel (110), but it may also be formed on the inner surface of the panel (110), or it may be formed on both surfaces.

[0032] The substrate (111) may be transparent and may be made of glass, spinel, or the like, and the material may include one or more elements selected from SiO2 and Al2O3. In addition, the substrate (111) is not limited to being hard and may also be a flexible material that can be deformed, such as by bending or folding.

[0033] As shown in FIGS. 1 and 2, a panel (110) of a Faraday cage (100) having an irregular metal pattern applied according to one embodiment of the present invention may have a metal layer (112) formed in an irregular pattern of triangles, squares, hexagons, and circles on one surface of a substrate (111).

[0034] Here, the irregular pattern forming the metal layer (112) is a closed shape that defines a closed area where the start and end points of the lines meet, and is not limited to a type such as a polygon such as a triangle, square, pentagon, hexagon, or octagon, or a curved shape such as a circle or oval. However, an equilateral triangle, square, or regular hexagon is suitable for easily filling a predetermined area around a single point with a repeating pattern without any gaps, and shapes other than these basic shapes are also possible.

[0035] At this time, the continuous lines forming the irregular pattern of the metal layer (112) preferably have a width (W) of 1 to 100 μm, and more preferably, may have a width of 1 to 10 μm.

[0036] Since metal is a material that basically does not allow light to pass through, it can be said that even a thin film of 1 μm or less has opacity in the line section where the pattern is formed. However, since the width of the lines that make up the pattern is very thin, from 1 to 100 μm, and these patterns are densely formed, the panel (110) has excellent optical properties overall, and can be utilized for purposes such as accommodating optical sensors or radars.

[0037] Meanwhile, the thickness of the metal layer (112) may be 1 μm or less. Even if it is a thin film of 1 μm or less, if the length is appropriately determined to form a pattern composed of a plurality of fine holes, it can exhibit not only sufficient electrical characteristics but also excellent optical characteristics.

[0038] The metal forming the metal pattern of the above metal layer (112) may be formed by including one or more elements selected from nickel (Ni), chromium (Cr), iron (Fe), copper (Cu), platinum (Pt), gold (Au), thallium (Ta), and titanium (Ti).

[0039] The perimeter of the irregular pattern forming the metal layer (112) can be connected to each other, and in embodiments, all lines forming the pattern are connected to each other by being connected by the substrate (111) along the perimeter of the irregular pattern formed of a plurality of closed shapes.

[0040] Meanwhile, it is preferable that the metal pattern is formed by a dry etching method.

[0041] FIG. 3 illustrates a Faraday cage having an irregular metal pattern applied thereto according to another embodiment of the present invention, and FIG. 4 illustrates a panel of the Faraday cage having the irregular metal pattern shown in FIG. 3 applied thereto.

[0042] Referring to FIG. 3, a Faraday cage (300) having an irregular metal pattern applied according to one embodiment of the present invention includes a panel (310) having a transparent substrate (311) and a metal layer (312) formed by depositing a conductive metal on one surface of the substrate (311). The Faraday cage (300) has a predetermined space on the inside so that an electrical or optical device can be accommodated, and the space can be defined by at least one panel (310).

[0043] As shown in FIGS. 3 and 4, a panel (310) of a Faraday cage (300) having an irregular metal pattern applied according to another embodiment of the present invention may have a metal layer (312) formed with an irregular pattern of sine and cosine curves on one surface of a substrate (311).

[0044] According to another embodiment of the present invention, the metal pattern of the metal layer (312) of the panel (310) of the Faraday cage (300) to which an irregular metal pattern is applied has a shape in which sine curve lines using trigonometric functions are combined. That is, an irregularly shaped metal pattern is formed by a combination of sine curve lines (312-1a, 312-1b, 312-1c, 312-1d, ....) formed in a horizontal direction and sine curve lines (312-2a, 312-2b, 312-2c, 312-2d, ....) formed in a vertical direction.

[0045] At this time, the irregularity of the metal pattern can be increased by applying various parameters to the sinusoidal lines formed in the horizontal direction (312-1a, 312-1b, 312-1c, 312-1d, ....) and the sinusoidal lines formed in the vertical direction (312-2a, 312-2b, 312-2c, 312-2d, ....).

[0046] That is, the number of sine curve lines formed in a horizontal or vertical direction, the spacing between sine curve lines formed in a horizontal or vertical direction, the period of the sine curve lines, the amplitude of the sine curve lines, the phase of the sine curve lines, and the width (W) and thickness (T) of the sine curve lines can be randomly changed to increase the irregularity of the metal pattern.

[0047] In the above, the curve line using the trigonometric function is explained as a sine curve line, but it is obvious that this can also be applied to a cosine curve line.

[0048] FIG. 5 illustrates a Faraday cage having an irregular metal pattern applied thereto according to another embodiment of the present invention, and FIG. 6 illustrates a panel of the Faraday cage having the irregular metal pattern shown in FIG. 5 applied thereto.

[0049] As shown in FIGS. 5 and 6, a panel (510) of a Faraday cage (500) having an irregular metal pattern applied according to another embodiment of the present invention may be formed by forming a metal layer (512) in an irregular pattern by combining a plurality of jigsaw lines on one surface of a substrate (511).

[0050] According to another embodiment of the present invention, the metal pattern of the metal layer (512) of the panel (510) of the Faraday cage (500) to which an irregular metal pattern is applied has the form of a jig-saw pattern having an irregular shape by combining a plurality of jig-saw lines. That is, a metal pattern of an irregular shape is formed by combining jig-saw lines (512-1a, 512-1b, 512-1c, 512-1d, ....) formed in a horizontal direction and jig-saw lines (512-2a, 512-2b, 512-2c, 512-2d, ....) formed in a vertical direction.

[0051] At this time, the metal pattern can increase the irregularity of the metal pattern by randomly changing the number of jigsaw lines, the spacing between the jigsaw lines, the period of the jigsaw lines, the amplitude of the jigsaw lines, and the width and thickness of the jigsaw lines for the jigsaw lines (512-1a, 512-1b, 512-1c, 512-1d, ....) formed in the horizontal direction and the jigsaw lines (512-2a, 512-2b, 512-2c, 512-2d, ....) formed in the vertical direction.

[0052] In particular, since metal is a material that is basically impermeable to light, it can be said that even a thin film of 1 μm or less has opacity in the line section where the pattern is formed. However, since the width of the lines forming the pattern is very thin, from 1 to 100 μm, and such patterns are densely formed, the panel (10) has excellent optical properties overall, and can be utilized for purposes such as accommodating optical sensors or radars.

[0053] FIG. 7 is a drawing for explaining the effect of a Faraday cage to which an irregular metal pattern according to the present invention is applied.

[0054] Figure 7 (a) shows a case where a regular pattern is formed as in the prior art, and it can be seen that the light transmittance is poor due to the interference effect.

[0055] Figure 7 (b) shows a case where an irregular pattern is formed according to the present invention, and it can be confirmed that the interference effect disappears and the light transmittance is greatly improved.

Claims

1. In a Faraday cage surrounded by at least one panel, The above panel, transparent substrate; and A metal layer having an irregularly shaped metal pattern formed by depositing a conductive metal on one surface of the above-mentioned substrate; A Faraday cage having an irregular metal pattern applied thereto, characterized in that the electromagnetic shielding properties are improved by the irregularly shaped metal pattern.

2. In the first paragraph, the description is A Faraday cage having an irregular metal pattern applied thereto, characterized by including glass or a flexible polymer.

3. In the first paragraph, the shape of the metal pattern is A Faraday cage having an irregular metal pattern applied thereto, characterized by having an irregular shape formed by combining at least one or more polygonal or circular shapes including triangles, squares, pentagons, hexagons, octagons, decagons, and dodecagons formed by continuous lines.

4. In the third paragraph, the metal pattern A film having a metal pattern having a heating wire, characterized in that it has an irregular shape formed by combining at least one polygon or circle including a triangle, a square, a pentagon, a hexagon, an octagon, a decagon, and a dodecagon made of continuous lines, and some of the shapes are formed by overlapping each other.

5. In the first paragraph, the shape of the metal pattern is A Faraday cage having an irregular metal pattern, characterized by having an irregular shape formed by combining a plurality of sine curves or a plurality of cosine curves formed by continuous lines.

6. In the first paragraph, the shape of the metal pattern is A Faraday cage with an irregular metal pattern, characterized by a jigsaw pattern having an irregular shape formed by combining multiple jigsaw lines.

7. In any one of the clauses 3 to 6, A Faraday cage having an irregular metal pattern applied, characterized in that the thickness of the metal layer is 1㎛ or less.

8. In any one of the clauses 3 to 6, A Faraday cage having an irregular metal pattern applied, characterized in that the continuous lines forming the metal pattern of the metal layer have a line width of 0.1 ㎛ to 100 ㎛.

9. In any one of the clauses 3 to 6, A Faraday cage having an irregular metal pattern applied thereto, characterized in that the metal forming the metal pattern includes at least one element selected from nickel (Ni), chromium (Cr), iron (Fe), copper (Cu), platinum (Pt), gold (Au), thallium (Ta), and titanium (Ti).

10. In any one of the clauses 3 to 6, A Faraday cage having an irregular metal pattern applied thereto, characterized in that all of the continuous lines forming the metal pattern of the metal layer are electrically connected.

11. In the first paragraph, the metal pattern is A Faraday cage having an irregular metal pattern formed by a dry etching method.

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