KR-20260064027-A - INSULATING GLASS FOR CONSTRUCTION EQUIPPED WITH FREQUNCY SELECTIVITY

KR20260064027AKR 20260064027 AKR20260064027 AKR 20260064027AKR-20260064027-A

Abstract

An insulating glass for architecture having frequency selectivity is provided. The insulating glass comprises: a first glass layer; and an insulating metal thin film layer disposed on one surface of the first glass layer. Herein, the insulating metal thin film layer comprises a plurality of unit cells arranged within the plane of the insulating metal thin film layer, and at least some of the unit cells comprise: an inner square slit disposed at the center of the unit cell; an outer square slit disposed around the inner square slit and spaced apart from the inner square slit; and a plurality of T-shaped slits disposed at the center of each side of the unit cell.

Inventors

홍원빈
박승덕
조성대
박상진
김경민
복진비
김민경

Assignees

주식회사 케이씨씨글라스
포항공과대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (9)

As an architectural insulating glass having frequency selectivity, First glass layer; and A thermal insulating metal thin film layer disposed on one surface of the first glass layer; comprising, The above insulating metal thin film layer comprises a plurality of square-shaped unit cells arranged within the plane of the insulating metal thin film layer, and at least some of the unit cells are, An inner square slit positioned at the center of the above unit cell; An outer square slit surrounding the inner square slit and spaced apart from the inner square slit; and A plurality of T-shaped slits disposed at the center of each side of the above unit cell; comprising Architectural insulating glass with frequency selectivity.
In Article 1, The above T-shaped slit is, Combining with the T-shaped slit of an adjacent unit cell to form a cross slit with equal longitudinal and transverse lengths, Architectural insulating glass with frequency selectivity.
In Article 1, The above T-shaped slit is, An edge slit positioned adjacent to the center of each side of the above unit cell; and A protruding slit extending from the center of the edge slit toward the center of the unit cell; comprising Architectural insulating glass with frequency selectivity.
In Paragraph 3, The line width of the above protruding slit is, twice the line width of the above edge slit, Architectural insulating glass with frequency selectivity.
In Paragraph 3, The line width of the inner square slit above is, Same as the line width of the above edge slit, Architectural insulating glass with frequency selectivity.
In Article 5, The line width of the outer square slit above is, Same as the line width of the above protruding slit, Architectural insulating glass with frequency selectivity.
In Article 1, The length of one side of the inner square slit is formed to be shorter than the length of the edge slit, and The length of one side of the above outer square slit is formed to be longer than the length of the above edge slit, Architectural insulating glass with frequency selectivity.
In Paragraph 3, The length of one side of the above unit cell is 10 times the length of one side of the above inner square slit, and The length of one side of the outer square slit is five times the length of one side of the inner square slit, and The length of the edge slit is 1.5 times the length of one side of the inner square slit, Architectural insulating glass with frequency selectivity.
In Paragraph 3, The length of one side of the above unit cell is 1 mm, and The line width of the inner square slit above is 10 μm, and The line width of the above edge slit is 10 μm, and The line width of the outer square slit above is 20 μm, and The line width of the above protruding slit is 20 μm, and The thickness of the above insulating metal thin film layer is 10 to 40 μm, Architectural insulating glass with frequency selectivity.

Description

Insulating glass for construction equipped with frequency selectivity The present invention relates to insulating glass for construction, and more specifically, to insulating glass for construction having frequency selectivity. In modern commercial and residential construction, Low-E (Low-emissivity) glass is widely used for energy saving purposes. Low-E glass is a glass surface coated with an ultra-thin metal layer to reduce heat loss; because it enhances indoor temperature maintenance and energy saving effects, it is particularly widely used as a window or building exterior material. In this regard, Fig. 1 is a conceptual diagram of Low-E glass. As shown in Fig. 1, Low-E glass can prevent indoor heating from escaping to the outside by reflecting solar rays from the outside or allowing visible light to pass through, while ensuring visibility by providing a Low-E coating on at least one surface of the glass window. In other words, the core technology of Low-E glass lies in reducing the loss of indoor heat to the outside through a heat-reflecting metal coating, and generally, such a coating can be composed of silver (Ag) or a metal oxide layer. The low-E coating layer reflects infrared wavelengths from the sun, preventing heat from entering the room in the summer and preventing heat from escaping the room in the winter. However, while the introduction of a metal thin film layer in low-e glass offers excellent thermal insulation, it has the disadvantage of interfering with the transmission and reception of radio waves, which are a core element of modern information and communication technology. As illustrated in Fig. 1, the low-e coating can interfere with the transmission of signals from a base station to an indoor wireless terminal, and conversely, it can interfere with the transmission of signals from an indoor wireless terminal to a base station. This may be attributed to the fact that the low-e coating layer also reflects wireless signals. To address these issues, removing a portion of the metal thin film layer of insulating glass could be considered; however, since the removal of this layer results in a degradation of thermal insulation performance, it was difficult to simultaneously satisfy both radio wave transmittance and thermal insulation performance. Furthermore, modern wireless communication systems operate in a wide variety of ways, and the frequency bands used by each system are widely distributed; consequently, it is not easy to guarantee radio wave transmittance across various frequencies, and there may even be situations where security is required by shielding radio waves for specific frequency bands. Figure 1 is a conceptual diagram of Low-E glass. Figure 2 shows an exemplary double-layer structure of Low-E glass. Figure 3 shows the S-parameter measurement results according to single Low-E glass. Figure 4 shows the S-parameter measurement results according to double low-e glass. FIG. 5 shows an exemplary structure of an insulating glass for construction having frequency selectivity according to one embodiment of the present invention. Figure 6 shows the arrangement of unit cells within the plane of the insulating metal thin film layer of Figure 5. FIG. 7 illustrates a grid pattern of a unit cell according to one embodiment of the present invention. Figure 8 shows the S-parameter measurement results according to the pattern of Figure 7. FIG. 9 illustrates a grid-circular slit pattern of a unit cell according to one embodiment of the present invention. Figure 10 shows the results of S-parameter measurements in a broadband frequency range according to the pattern of Figure 9. Figure 11 shows the results of S-parameter measurements in the partial frequency range according to the pattern of Figure 9. FIG. 12 illustrates a grid-double circular slit pattern of a unit cell according to one embodiment of the present invention. Figure 13 shows the results of S-parameter measurements in a broadband frequency range according to the pattern of Figure 12. Figure 14 shows the results of S-parameter measurements in the partial frequency range according to the pattern of Figure 12. FIG. 15 illustrates a grid-double square slit pattern of a unit cell according to one embodiment of the present invention. Figure 16 shows the results of S-parameter measurements in a broadband frequency range according to the pattern of Figure 15. Figure 17 shows the results of S-parameter measurements in the partial frequency range according to the pattern of Figure 15. FIG. 18 illustrates a grid-cross circular slit pattern of a unit cell according to one embodiment of the present invention. Figure 19 shows the results of S-parameter measurements in the partial frequency range according to the pattern of Figure 18. FIG. 20 illustrates a double square-cross slit pattern of a unit cell according to one embodiment of the present invention. Figure 21 shows the results of S-parameter measurements in the partial frequency range accor