Patent Application
20180291496
The present invention relates to a stacked body, and more particularly, to a stacked body including a germanium layer, an organic material layer, a zinc compound layer, and the like, thereby exhibiting a specific color and glossiness, transmitting electromagnetic waves, and having excellent water resistance. The present invention corresponds to B32B 5 in the international patent classification (IPC).
A sensor cover is a part for covering an antenna of a sensor and installed to protect a general antenna from collision, debris, and strong wind pressure. Accordingly, a sensor cover is required to have strength to be able to withstand wind pressure, friction with air, hail, and the like, weather resistance, lightness in weight, an excellent electromagnetic wave transmittance, and the like.
However, in some cases, there is a limitation in designing a sensor cover in terms of a design. An auto cruise control system refers to an apparatus in which when a driver operates a switch at a desired speed, a computer stores the vehicle speed to allow the driver to drive the vehicle without pressing an acceleration pedal. The auto cruise control system controls a distance between the vehicles as well as the vehicle speed, and a sensor installed in the system may detect the distance between the vehicles. A sensor for detecting the distance between the vehicles needs to be installed at the front of the vehicle, and a sensor cover capable of covering the antenna of the sensor is required aesthetically. In addition, the sensor cover for vehicles needs to be in harmony with the surrounding thereof.
In the related art, indium (In) or tin (Sn), which are materials capable of transmitting the electromagnetic waves while exhibiting a metallic color and glossiness, were used as a sensor cover material. As the prior art related thereto, there is Japanese Patent Registration No. 3366299 (hereinafter referred to as Prior Art 1).
A technical object to be achieved in the present invention is to solve a problem that indium used in Prior Art 1 exhibits a metallic color and glossiness, but is easily oxidized or peeled and thus, reliability is poor.
Technical objects to be achieved in the present invention are not limited to the aforementioned objects, and other technical objects which are not described above will be apparently understood to those skilled in the art from the following disclosure of the present invention.
The present invention contrived to solve the technical objects provides a stacked body including a substrate and a deposition layer formed on the substrate, in which the deposition layer includes: an organic material layer made of an organic material; a first zinc compound layer deposited on the upper surface of the organic material layer and made of zinc sulfide (ZnS) or zinc selenide (ZnSe); a germanium layer deposited on the upper surface of the first zinc compound layer and made of germanium (Ge) or a germanium alloy; and a second zinc compound layer deposited on the upper surface of the germanium layer and made of the zinc sulfide or the zinc selenide. The stacked body has excellent reliability and excellent electromagnetic wave transmissivity.
The present invention has a first effect that the water resistance and the moisture resistance are excellent and thus the reliability is excellent, a second effect that it is well in harmony with the surrounding of the sensor cover for vehicles in terms of colors and glossiness as compared with indium or tin, a third effect that the electromagnetic wave transmissivity is excellent, a fourth effect that it is thin and light, and a fifth effect that the manufacturing price competitiveness is high because indium, which is a rare metal, or an indium alloy is not used.
According to the embodiment of the present invention, the effects of the present invention are not limited to the above effects and it should be understood that the effects include all effects inferable from the configuration of the invention described in the detailed description or appended claims of the present invention.
The present invention contrived to solve the problems provides a stacked body including a substrate and a deposition layer formed on the substrate, in which the deposition layer includes: an organic material layer made of an organic material; a first zinc compound layer deposited on the upper surface of the organic material layer and made of zinc sulfide (ZnS) or zinc selenide (ZnSe); a germanium layer deposited on the upper surface of the first zinc compound layer and made of germanium (Ge) or a germanium alloy; and a second zinc compound layer deposited on the upper surface of the germanium layer and made of the zinc sulfide or the zinc selenide.
In addition, according to an embodiment of the present invention, the deposition layer may further include a chromium oxide layer deposited on the upper surface of the second zinc compound layer and made of chromium oxide (CrOx).
In addition, according to an embodiment of the present invention, the thickness of the organic material layer may be 50 to 400 Å.
In addition, according to an embodiment of the present invention, the thickness of the first zinc compound layer may be 100 to 600 Å.
In addition, according to an embodiment of the present invention, the thickness of the germanium layer may be 150 to 800 Å.
In addition, according to an embodiment of the present invention, the thickness of the second zinc compound layer may be 100 to 600 Å.
In addition, according to an embodiment of the present invention, the thickness of the chromium oxide layer may be 50 to 400 Å.
In addition, according to an embodiment of the present invention, the germanium alloy may be made of 50 to 99 wt % of the germanium and 1 to 50 wt % of at least one element belonging to Groups 3B to 5A of the periodic table.
In addition, according to an embodiment of the present invention, the substrate may be made of at least one material selected from the group consisting of polycarbonate (PC), polymethylmethacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), cycloolefin polymer (COP), polyether sulfone (PES), polyetheretherketone (PEEK), polyarylate (PAR), an ABS resin, and a silicone resin.
In addition, according to the embodiment of an present invention, the stacked body may further include a primer coating layer located between the substrate and the deposition layer.
In addition, according to an embodiment of the present invention, the stacked body may further include a black shield coating layer formed on the upper surface of the deposition layer.
Further, the present invention provides a stacked body including a deposition layer further including a ceramic layer made of ceramic on the lowermost layer and the substrate.
In addition, according to an embodiment of the present invention, the ceramic layer may include at least one high refractive index layer having a refractive index of 1.7 to 2.6 and at least one low refractive index layer having a refractive index of 1.4 or more and less than 1.7, and the high refractive index layers and the low refractive index layers may be alternately deposited.
In addition, according to an embodiment of the present invention, the ceramic layer may be formed by depositing a first high refractive index layer, a first low refractive index layer, a second high refractive index layer, and a second low refractive index layer in sequence.
In addition, according to an embodiment of the present invention, the high refractive index layer and the low refractive index layer may be made of at least one material selected from the group consisting of oxides, carbides, and nitrides.
In addition, according to an embodiment of the present invention, the high refractive index layer may be made of Ti3O5, and the low refractive index layer may be made of silicon dioxide (SiO2).
In addition, according to the embodiment of the present invention, the thickness of the first high refractive index layer may be 50 to 400 Å, the thickness of the first low refractive index layer may be 150 to 800 Å, the thickness of the second high refractive index layer may be 175 to 900 Å, the thickness of the second low refractive index layer may be 225 to 1100 Å, the thickness of the organic material layer may be 50 to 400 Å, the thickness of the first zinc compound layer may be 100 to 600 Å, the thickness of the germanium layer may be 150 to 800 Å, the thickness of the second zinc compound layer may be 100 to 600 Å, and the thickness of the chromium oxide layer may be 50 to 400 Å.
Hereinafter, the present invention will be described with reference to the accompanying drawings. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In addition, the drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals designate like elements throughout the specification.
Throughout the specification, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
Terms used in the present specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions used herein include plurals expressions unless they have definitely opposite meanings. In the present specification, it should be understood that term “comprise” indicates that a feature, a number, a step, an operation, a component, a part or the combination thereof described in the specification is present, but does not exclude a possibility of presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof, in advance.
A stacked body 1 of the present invention includes a substrate 10 and a deposition layer 30 formed on the substrate 10. In addition, the stacked body 1 may further include a primer coating layer 20 formed on the upper surface of the substrate 10 and located on the lower surface of the deposition layer 30. Further, the stacked body 1 may further include a black shield coating layer 40 formed on the upper surface of the deposition layer 30.
The stacked body 1 may transmit electromagnetic waves while exhibiting a specific color and glossiness. Accordingly, the stacked body 1 may be used as a sensor cover for a vehicle.
The substrate 10 may be a transparent substrate 10. The reason is to have a color of light reflected to the deposition layer 30, or the deposition layer 30 and the black shield coating layer 40 be exhibited to the outside of the stacked body 1 as it is. Further, the reason is to have the glossiness represented by the deposition layer 30 be exhibited to the outside of the stacked body 1 as it is. In
The primer coating layer 20 may be made of a material mixed with an acrylic resin (a main component), a solvent, and other additives, but is not limited thereto. In addition, the primer coating layer 20 may be formed by painting, dipping, or spraying, but is not limited thereto. Further, the primer coating layer 20 is transparent or translucent. Like the substrate 10, this is to have the color of the light reflected to the deposition layer 30, or the deposition layer 30 and the black shield coating layer 40 be exhibited to the outside of the stacked body 1 as it is. In addition, like the substrate 10, this is to have the glossiness represented by the deposition layer 30 be exhibited to the outside of the stacked body 1 as it is. Further, the primer coating layer 20 has adhesive strength to help the adhesion between the substrate 10 and the deposition layer 30.
The black shield coating layer 40 may be made of a material mixed with an acrylic resin (a main component), a black pigment, a solvent, and other additives, but is not limited thereto. In addition, the black shield coating layer 40 may be formed by painting, dipping, or spraying, but is not limited thereto. In addition, the black shield coating layer 40 is black. The reason is that when the stacked body 1 is used as the sensor cover for vehicles, it is preferable that components in the vehicle are not shown at the outside. In addition, the color of the black shield coating layer 40 is associated with the color of the stacked body 1 exhibited at the outside. The color of the black shield coating layer 40 is exhibited at the outside as it is, and thus, the stacked body 1 may also exhibit black. However, the stacked body 1 may also exhibit a bright color because the materials forming the deposition layer 30, the thickness of the deposition layer 30, and the like are changed.
The deposition layer 30 is formed by depositing one or more layers by a predetermined deposition method. The deposition method may be at least one of thermal evaporation, electron beam evaporation, sputtering, thermal chemical vapor deposition (CVD), plasma enhanced chemical vapor deposition (PECVD), metal organic chemical vapor deposition (MOCVD), and electroless plating, but is not limited thereto.
The deposition layer 30 includes a germanium (Ge) layer 320. The germanium layer 320 is made of germanium or a germanium alloy. The germanium may exhibit glossiness and transmit electromagnetic waves. The germanium alloy may exhibit glossiness and transmit electromagnetic waves. The germanium alloy consists of one or more elements in addition to the germanium. The one or more elements may be elements belonging to Groups 3B to 5A of the periodic table. More specifically, the one or more elements may be elements selected from the group consisting of gold (Au), silver (Ag), boron (B), aluminum (Al), gallium (Ga), indium (In), tin (Sn), and thallium (Tl). In the germanium alloy, the content of the germanium is provided at 50 to 99 wt % and the content of the remaining components is provided at 1 to 50 wt %. If the germanium content is less than 50 wt % or the content of the remaining components is more than 50 wt %, the glossiness and a metallic texture exhibited by the germanium layer 320 may be worse than those to be desired. If the germanium content is more than 99 wt % or the content of the remaining components is less than 1 wt %, target performance (for example, strength) of the germanium layer 320 may not be exhibited properly.
The deposition layer 30 may include various layers in addition to the germanium layer 320. For example, the deposition layer 30 may include the germanium layer 320 and a ceramic layer 310 (see
As another example, the deposition layer 30 may include an organic material layer 330, a zinc compound layer 340, and the germanium layer 320 (see
As yet another example, the deposition layer 30 may include the organic material layer 330, the zinc compound layer 340, the germanium layer 320, and a chromium oxide (CrOx) layer 350 (see
As still another example, the deposition layer 30 may include the ceramic layer 310, the organic material layer 330, the zinc compound layer 340, the germanium layer 320, and the chromium oxide layer 350 (see
An injection-molded polycarbonate substrate 10 was prepared. A primer coating layer 20 was formed by coating the upper surface of the substrate 10 with a slurry containing an acrylic resin as a main component.
The substrate 10 formed with the primer coating layer 20 was mounted on the bottom in a vacuum chamber and exhausted so that the degree of vacuum in the vacuum chamber was 7×106 Torr. Glipoxan™ in a monomer state was supplied into the vacuum chamber at 120 sccm through a mass flow controller (MFC) installed in the vacuum chamber. In addition, power of 3000 W was applied to an electrode plate of a plasma generator installed in the vacuum chamber. As a result, the Glipoxan™ in a polymer state was deposited on the upper surface of the primer coating layer 20, thereby depositing an organic material layer 330. This is because plasma polymerization mainly occurred, in which the Glipoxan™ in the monomer state was changed to the plasma state in an electric field by the plasma generator in the vacuum chamber, and then the materials in the plasma state were polymerized to be changed into the Glipoxan™ in the polymer state.
The substrate 10 formed with the primer coating layer 20 and the organic material layer 330 was mounted on the upper portion in the vacuum chamber and a zinc sulfide chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the zinc sulfide chemical. As a result, zinc sulfide was deposited on the upper surface of the organic material layer 330, thereby depositing the first zinc compound layer 340a. This is because the zinc sulfide is evaporated by the energy of the electron beam such that the zinc sulfide is deposited on the upper surface of the organic material layer 330. By such an electron beam evaporation method, the germanium layer 320, the second zinc compound layer 340b, and the chromium oxide layer 350 were sequentially deposited on the upper surface of the first zinc compound layer 340a. Germanium was used for the germanium layer 320. Zinc sulfide was used for the second zinc compound layer 340b. In addition, Cr2O3 was used for the chromium oxide layer 350.
The stacked body 1 deposited up to the chromium oxide layer 350 was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form a black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the organic material layer 330, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, the chromium oxide layer 350, and the black shield coating layer 40 was manufactured (see
An injection-molded polycarbonate substrate 10 was prepared. A primer coating layer 20 was formed by coating the upper surface of the substrate 10 with a slurry containing an acrylic resin as a main component.
The substrate 10 formed with the primer coating layer 20 was mounted on the upper portion in the vacuum chamber and a Ti3O5 chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the Ti3O5 chemical. As a result, Ti3O5 was deposited on the upper surface of the primer coating layer 20, thereby depositing the first high refractive index layer 311a. The reason is that the Ti3O5 is evaporated by the energy of the electron beam and the Ti3O5 is deposited on the upper surface of the primer coating layer 20. By such an electron beam evaporation method, the first low refractive index layer 312a, the second high refractive index layer 311b, and the second low refractive index layer 312b were sequentially deposited on the upper surface of the first high refractive index layer 311a. Silicon dioxide was used for the first low refractive index layer 312a and the second low refractive index layer 312b. In addition, the Ti3O5 was used for the second high refractive index layer 311b.
The substrate 10 formed with the primer coating layer 20 and the ceramic layer 310 was mounted on the bottom in a vacuum chamber, and the vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 7×106 Torr. Glipoxan™ in a monomer state was supplied into the vacuum chamber at 120 sccm through an MFC installed in the vacuum chamber. In addition, power of 3000 W was applied to an electrode plate of a plasma generator installed in the vacuum chamber. As a result, the Glipoxan™ in a polymer state was deposited on the upper surface of the second low refractive index layer 312b, thereby depositing the organic material layer 330. This is because plasma polymerization mainly occurred inside the vacuum chamber.
Thereafter, the same layers as the layers in Example 1 were formed by the same method as the method in Example 1. As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, the second low refractive index layer 312b, the organic material layer 330, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, the chromium oxide layer 350 and the black shield coating layer 40 was manufactured (see
An injection-molded polycarbonate substrate 10 was prepared. A primer coating layer 20 was formed by coating the upper surface of the substrate 10 with a slurry containing an acrylic resin as a main component.
The substrate 10 formed with the primer coating layer 20 was mounted on the upper portion in the vacuum chamber and a germanium specimen was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted to that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the germanium specimen. As a result, germanium was deposited on the upper surface of the primer coating layer 20, thereby depositing the germanium layer 320. The reason is that the germanium was evaporated by the energy of the electron beam and the germanium was deposited on the upper surface of the primer coating layer 20.
The stacked body 1 deposited up to the germanium layer 320 was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form a black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the germanium layer 320, and the black shield coating layer 40 was manufactured. The thickness of the germanium layer 320 was 350 Å.
An injection-molded polycarbonate substrate 10 was prepared. A primer coating layer 20 was formed by coating the upper surface of the substrate 10 with a slurry containing an acrylic resin as a main component.
The substrate 10 formed with the primer coating layer 20 was mounted on the upper portion in the vacuum chamber and a zinc sulfide chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the zinc sulfide chemical. As a result, zinc sulfide was deposited on the upper surface of the primer coating layer 20, thereby depositing the first zinc compound layer 340a. By such an electron beam evaporation method, the germanium layer 320 and the second zinc compound layer 340b were sequentially deposited on the upper surface of the first zinc compound layer 340a. Germanium was used for the germanium layer 320. In addition, zinc sulfide was used for the second zinc compound layer 340b.
The stacked body 1 deposited up to the second zinc compound layer 340b was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form the black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, and the black shield coating layer 40 was manufactured. The thickness of the first zinc compound layer 340a was 250 Å. The thickness of the germanium layer 320 was 350 Å. In addition, the thickness of the second zinc compound layer 340a was 250 Å.
An injection-molded polycarbonate substrate 10 was prepared. A primer coating layer 20 was formed by coating the upper surface of the substrate 10 with a slurry containing an acrylic resin as a main component.
The substrate 10 formed with the primer coating layer 20 was mounted on the bottom in a vacuum chamber, and the vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 7×10−6 Torr. Glipoxan™ in a monomer state was supplied into the vacuum chamber at 120 sccm through an MFC installed in the vacuum chamber. In addition, power of 3000 W was applied to an electrode plate of a plasma generator installed in the vacuum chamber. As a result, the Glipoxan™ in a polymer state was deposited on the upper surface of the primer coating layer 20, thereby depositing the organic material layer 330. This is because plasma polymerization mainly occurred inside the vacuum chamber.
The substrate 10 formed with the primer coating layer 20 and the organic material layer 330 was mounted at the upper portion in the vacuum chamber and a zinc sulfide chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the zinc sulfide chemical. As a result, zinc sulfide was deposited on the upper surface of the organic material layer 330, thereby depositing the first zinc compound layer 340a. This is because the zinc sulfide was evaporated by the energy of the electron beam such that the zinc sulfide was deposited on the upper surface of the organic material layer 330. By such an electron beam evaporation method, the germanium layer 320 and the second zinc compound layer 340b were sequentially deposited on the upper surface of the first zinc compound layer 340a. Germanium was used for the germanium layer 320. In addition, the zinc sulfide was used for the second zinc compound layer 340b.
The stacked body 1 deposited up to the second zinc compound layer 340b was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form the black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the organic material layer 330, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, and the black shield coating layer 40 was manufactured. The thickness of the organic material layer 330 was 150 Å. The thickness of the first zinc compound layer 340a was 250 Å. The thickness of the germanium layer 320 was 350 Å. In addition, the thickness of the second zinc compound layer 340a was 250 Å.
The stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, and the second low refractive index layer 312b was manufactured. In the stacked body 1, the same materials as the materials in Example 2 and the same method as the method in Example 2 were used.
The substrate 10 formed with the primer coating layer 20 and the ceramic layer 310 was mounted on the upper portion in the vacuum chamber and a germanium specimen was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the germanium specimen. As a result, germanium was deposited on the upper surface of the second low refractive index layer 312b, thereby depositing the germanium layer 320. The reason is that the germanium was evaporated by the energy of the electron beam and the germanium was deposited on the upper surface of the second low refractive index layer 312b.
The stacked body 1 deposited up to the germanium layer 320 was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form the black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, the second low refractive index layer 312b, the germanium layer 320, and the black shield coating layer 40 was manufactured. The thickness of the germanium layer 320 was 350 Å.
The stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, and the second low refractive index layer 312b was manufactured. In the stacked body 1, the same materials as the materials in Example 2 and the same method as the method in Example 2 were used.
The substrate 10 formed with the primer coating layer 20 and the ceramic layer 310 was mounted on the upper portion in the vacuum chamber and a zinc sulfide chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the zinc sulfide chemical. As a result, zinc sulfide was deposited on the upper surface of the second low refractive index layer 312b, thereby depositing the first zinc compound layer 340a. By such an electron beam evaporation method, the germanium layer 320 and the second zinc compound layer 340b were sequentially deposited on the upper surface of the first zinc compound layer 340a. Germanium was used for the germanium layer 320. In addition, the zinc sulfide was used for the second zinc compound layer 340b.
The stacked body 1 deposited up to the second zinc compound layer 340b was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form the black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, the second low refractive index layer 312b, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, and the black shield coating layer 40 was manufactured. The thickness of the first zinc compound layer 340a was 250 Å. The thickness of the germanium layer 320 was 350 Å. In addition, the thickness of the second zinc compound layer 340a was 250 Å.
The stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, and the second low refractive index layer 312b was manufactured. In the stacked body 1, the same materials as the materials in Example 2 and the same method as the method in Example 2 were used.
The substrate 10 formed with the primer coating layer 20 and the ceramic layer 310 was mounted on the bottom in the vacuum chamber, and the vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 7×106 Torr. Glipoxan™ in a monomer state was supplied into the vacuum chamber at 120 sccm through an MFC installed in the vacuum chamber. In addition, power of 3000 W was applied to an electrode plate of a plasma generator installed in the vacuum chamber. As a result, the Glipoxan™ in a polymer state was deposited on the upper surface of the second low refractive index layer 312b, thereby depositing the organic material layer 330. This is because plasma polymerization mainly occurred inside the vacuum chamber.
The substrate 10 formed with the primer coating layer 20, the ceramic layer 310, and the organic material layer 330 was mounted on the upper portion in the vacuum chamber and a zinc sulfide chemical was injected into a crucible provided in the vacuum chamber. The vacuum chamber was exhausted so that the degree of vacuum in the vacuum chamber was 1×10−5 Torr. In addition, a voltage of 7.5 kV (a current of 50 to 450 mA) was supplied to an electron beam gun provided in the vacuum chamber to irradiate an electron beam to the zinc sulfide chemical. As a result, zinc sulfide was deposited on the upper surface of the organic material layer 330, thereby depositing the first zinc compound layer 340a. This is because the zinc sulfide was evaporated by the energy of the electron beam such that the zinc sulfide was deposited on the upper surface of the organic material layer 330. By such an electron beam evaporation method, the germanium layer 320 and the second zinc compound layer 340b were sequentially deposited on the upper surface of the first zinc compound layer 340a. Germanium was used for the germanium layer 320. In addition, the zinc sulfide was used for the second zinc compound layer 340b.
The stacked body 1 deposited up to the second zinc compound layer 340b was extracted from the vacuum chamber and then coated with a slurry containing an acrylic resin as a main component and added with a black pigment to form the black shield coating layer 40.
As a result, the stacked body 1 formed by the substrate 10, the primer coating layer 20, the first high refractive index layer 311a, the first low refractive index layer 312a, the second high refractive index layer 311b, the second low refractive index layer 312b, the organic material layer 330, the first zinc compound layer 340a, the germanium layer 320, the second zinc compound layer 340b, and the black shield coating layer 40 was manufactured. The thickness of the organic material layer 330 was 150 Å. The thickness of the first zinc compound layer 340a was 250 Å. The thickness of the germanium layer 320 was 350 Å. In addition, the thickness of the second zinc compound layer 340a was 250 Å.
With respect to the stacked bodies 1 manufactured in Examples 1 and 2, reflectances were measured (Hitachi spectrophotometer U-3010). A result of measuring the reflectance for the stacked body 1 manufactured in Example 1 is illustrated in
In
In
That is, it was confirmed that the stacked body 1 manufactured in Example 1 exhibited black and glossiness, and the stacked body 1 manufactured in Example 2 exhibited silver and glossiness. Of course, the result was also visually confirmed.
With respect to the stacked bodies 1 manufactured in Examples 1 and 2, attenuation rates were measured (SM5899). The result is illustrated in Table 1 below.
As illustrated in Table 1, an electromagnetic wave transmitted through the stacked body 1 manufactured in Example 1 was changed by −0.62 dB and an electromagnetic wave transmitted through the stacked body 1 manufactured in Example 2 was changed by −0.66 dB. That is, it was confirmed that both electromagnetic waves transmitted through stacked body 1 manufactured in Example 1 and the electromagnetic wave transmitted through stacked body 1 manufactured in Example 2 were attenuated to less than 10%, confirming that the electromagnetic wave transmittances of the stacked bodies 1 manufactured in Examples 1 and 2 were satisfactory levels.
With respect to the stacked bodies 1 manufactured in Examples 1 and 2 and Comparative Examples 1 to 6, a water resistance test was performed. The stacked bodies 1 were immersed in water at 40° C. for 240 hours and then removed from the water. Air was sprayed to the stacked bodies 1 to remove the moisture and then the stacked bodies 1 were left at room temperature for 1 hour. Thereafter, the stacked bodies 1 were visually confirmed and the results are shown in Table 2 below.
As shown in Table 2, except for Examples 1 and 2, oxidation occurred in all other cases. This means that all of the organic material layer 330, the zinc compound layer 340, and the chromium oxide layer 350 are required for the excellent water resistance of the stacked body 1.
The oxidation of the stacked body 1 manufactured in Comparative Example 2 occurred more intensely than the oxidation of the stacked body 1 manufactured in Comparative Example 3. The oxidation of the stacked body 1 manufactured in Comparative Example 1 occurred more intensely than the oxidation of the stacked body 1 manufactured in Comparative Example 2. For reference, an image of the result of the water resistance test of the stacked body 1 manufactured in Comparative Example 2 is illustrated in
After the water resistance test of the stacked body 1 manufactured in Example 1, a result of measuring a reflectance of this stacked body 1 is illustrated in
As a result, it was confirmed that the stacked bodies 1 manufactured in Examples 1 and 2 (i) exhibited a specific color and glossiness, (ii) may transmit electromagnetic waves, and (iii) had excellent water resistance.
Although the present invention has been described with the accompanying drawings, the present invention is only one embodiment of various embodiments including the gist of the present invention and for the purpose to be easily implemented by those skilled in the art, and it will be apparent to those skilled in the art that the present invention is not limited to the above-described embodiments. Therefore, the scope of the present invention should be construed according to the following claims, and all technical ideas within the equal scope thereto will be included in the scope of equivalence by changes, substitutions, replacements, and the like without departing from the gist of the present invention. Further, it should be apparent that some configurations of the drawings are intended to explain the configuration more clearly and are provided in a more exaggerated or reduced size than the actual configuration.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2015-0134924 | Sep 2015 | KR | national |
| 10-2016-0109354 | Aug 2016 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2016/010326 | 9/13/2016 | WO | 00 |
