WO2023085461A1 - 투명 안테나 모듈 및 이를 제조하는 방법 - Google Patents
투명 안테나 모듈 및 이를 제조하는 방법 Download PDFInfo
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- WO2023085461A1 WO2023085461A1 PCT/KR2021/016448 KR2021016448W WO2023085461A1 WO 2023085461 A1 WO2023085461 A1 WO 2023085461A1 KR 2021016448 W KR2021016448 W KR 2021016448W WO 2023085461 A1 WO2023085461 A1 WO 2023085461A1
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- conductive layer
- antenna module
- transparent
- metal
- dielectric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
Definitions
- the present invention relates to a transparent antenna module. More specifically, it relates to a transparent antenna module embedded in a display and a method for manufacturing the same.
- the imprint process has been in the limelight as a process having low process cost and excellent mass productivity.
- this implant process has a high electrical resistance, so there are many restrictions on its utilization.
- a metal electrode used in a high-frequency communication component including a conductor has a low sheet resistance to reduce signal loss, and a high transparent electrode is required to increase design freedom.
- a metal mesh pattern through an implant process, there is a limit to implementing a line width that satisfies both a desired sheet resistance value and light transmittance.
- conductive metal particles may be formed by forming a microchannel on a substrate, filling the substrate with conductive metal ink, and performing heat treatment.
- plating may be performed for contact between the particles so that the contact between the conductive particles is smooth.
- the conductive metal ink or paste used for forming the conductor by the printing process has lower conductivity than the original metal. This is because the ink or paste contains organic materials together with metal particles, and the conductive path is small due to imperfect contact between metal particles.
- a method of filling a substrate with a conductive metal paste to form a conductive grid pattern may be considered.
- the metal paste has a particle or nanowire or nanorod shape and may be prepared in a graphene-composite form to improve conductivity.
- the conductive metal paste or ink includes an organic binder and an organic compound in a metal component. Accordingly, regardless of whether the shape of the metal material after sintering is spherical (particle) or linear (wire or rod), there is a problem of contact imperfection at the interface. Therefore, there is a problem in that the conduction path is reduced and the resistance is increased.
- a process of growing metal particles on the surface of graphene and a process of forming a graphene composite on a substrate are added. Accordingly, there is a problem in that the process is complicated and the price is high.
- the present invention aims to solve the foregoing and other problems.
- another object is to provide a transparent antenna module built into a display and a method for manufacturing the same, in more detail.
- Another object of the present invention is to provide an implant process method and a metal mesh structure for lowering sheet resistance during a metal mesh fabrication process by an implant process.
- Another object of the present invention is to implement the antenna radiator as a module with a transparent antenna having a metal mesh structure according to an implant process method for lowering a sheet resistance value.
- Another object of the present invention is to design and manufacture to realize a desired sheet resistance value and transparency in consideration of the specific resistance of the electrode material used, the line width, thickness, and spacing of the mesh pattern.
- Another object of the present invention is to implement a transparent antenna module that maintains transparency while improving conductivity.
- Another object of the present invention is to propose a metal mesh structure capable of maintaining or improving antenna characteristics while improving transparency and visibility in a metal mesh line structure.
- a transparent antenna module includes a dielectric substrate; a dielectric structure formed in contact with an upper portion of the dielectric substrate and spaced apart from each other by a predetermined gap area in at least one axial direction; a first conductive layer formed in the gap region to have a first thickness in contact with the dielectric substrate; and a second conductive layer formed to a second thickness in contact with an upper portion of the first conductive layer.
- a transparent metal mesh pattern composed of the first conductive layer and the second conductive layer and formed in at least one axial direction may be configured to radiate a wireless signal.
- the dielectric structure may be composed of a UV resin disposed in contact with the top of the dielectric substrate.
- the UV resin may be formed by being stamped by an imprint mold to be spaced apart by the gap area of the predetermined interval.
- the first conductive layer may be formed by printing metal ink or metal paste in the gap region with the first thickness lower than the height of the dielectric structure.
- the second conductive layer may be formed to the second thickness by a plating process on the printed metal ink or metal paste of the first conductive layer.
- the second conductive layer may serve as a main connection path for the wireless signal.
- the difference between the total height of the conductive layer and the height of the dielectric structure corresponding to the sum of the first thickness of the first conductive layer and the second thickness of the second conductive layer may be formed within a predetermined range.
- the second thickness of the second conductive layer may be formed thicker than the first thickness of the first conductive layer. Therefore, it is possible to reduce the loss of the transparent metal mesh pattern by reducing the sheet resistance according to the transmission of the wireless signal.
- the dielectric structure may be inclined at an angle of 45 degrees or less with respect to a vertical axis. Accordingly, the width of the gap region may decrease as it is adjacent to the dielectric substrate.
- the first conductive layer may be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- the second conductive layer may be formed in a hexahedron having an inverted trapezoidal cross section such that an area of an upper region is larger than an area of a lower region.
- the thickness of the dielectric structure may be greater than the width of the gap region of the dielectric structure.
- the first thickness of the first conductive layer may be greater than the width of the first conductive layer. Accordingly, it is possible to reduce sheet resistance while increasing transmittance of the antenna element formed of the transparent metal mesh pattern.
- the first conductive layer may be formed by volatilizing metal ink or an organic component of a metal face through a heat treatment process.
- the dielectric structure may be formed of a photocurable resin so as not to be damaged by the heat treatment process.
- the second conductive layer may be formed on the first conductive layer through a plating process.
- a metal content of the second conductive layer may be set higher than a metal content of the first conductive layer. Accordingly, the second conductive layer may have higher conductivity than the first conductive layer.
- the transparent metal mesh pattern may further include an antenna element configured to radiate a radio signal by being disposed at first intervals and second intervals in the first axis direction and the second axis direction.
- the length of the antenna element may be equal to or set to 1/2 to 1/4 of the operating wavelength corresponding to the operating frequency.
- the transparent antenna module may further include a power supply line configured to be connected to the antenna element to apply a radio signal to the antenna element.
- the feed line and the antenna element may be formed of a metal mesh line including the first conductive layer and the second conductive layer. A first distance and a second distance in the first axial direction and the second axial direction of the metal mesh line forming the feed line and the antenna element may be set to be the same.
- the transparent antenna module may further include a terminal configured to be connected to the feed line.
- a line width of the metal mesh pattern of the terminal unit may be set wider than a line width of the metal mesh pattern of the antenna element.
- Third intervals and fourth intervals of the metal mesh pattern of the terminal unit in the first axial direction and the second axial direction may be set to be narrower than the first interval and the second interval of the metal mesh pattern of the antenna element.
- an implant process may be performed to form first gap regions and second gap regions on the front and rear surfaces of the dielectric substrate.
- the transparent antenna module may include a first ground layer formed to a first thickness by contacting the dielectric substrate in a gap region formed on the rear surface of the dielectric substrate; and the second ground layer having a second thickness by being in contact with the first ground layer in a gap region formed on the rear surface.
- a method of manufacturing a transparent antenna module includes a dielectric structure forming step of forming a dielectric structure on top of a dielectric substrate in a contacted state; an implant step of forming the dielectric structure spaced apart from each other by a gap region of a predetermined interval in at least one axial direction using an implant mold; forming a first conductive layer in the gap region to be in contact with the dielectric substrate and to have a first height; and a second conductive layer forming step of contacting an upper portion of the first conductive layer to form a second conductive layer having a second height.
- an antenna element composed of a transparent metal mesh pattern formed in at least one axial direction may be formed through the forming of the first conductive layer and the forming of the second conductive layer.
- the first conductive layer in the forming of the first conductive layer, may be formed by printing a metal ink or metal paste in the gap region with the first height lower than the height of the dielectric structure.
- the second conductive layer in the forming of the second conductive layer, may be formed to the second height by a plating process on the printed metal ink or metal paste of the first conductive layer.
- the second conductive layer may serve as a main connection path for radio signals radiated through the antenna element.
- the dielectric structure in the forming of the dielectric structure, may be formed to be inclined at an angle of 45 degrees or less with respect to a vertical axis, so that the width of the gap region may decrease as it is adjacent to the dielectric substrate.
- the first conductive layer in the forming of the first conductive layer, the first conductive layer may be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- the second conductive layer in the forming of the second conductive layer, may be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- an implant operation is performed to form gap regions on the front and rear surfaces of the dielectric substrate
- a second ground layer forming step of forming a second ground layer with a second height in contact with the first ground layer in the gap region formed on the rear surface is further included.
- a transparent antenna module and a method for manufacturing the same according to the present specification are described as follows.
- a transparent antenna module embedded in a display and a method for manufacturing the same can be provided.
- an antenna radiator may be implemented as a module with a transparent antenna having a metal mesh structure according to an implant process method for lowering a sheet resistance value.
- the present specification it can be designed and manufactured to realize a desired sheet resistance value and transparency in consideration of the specific resistance of the electrode material used, the line width, thickness, and spacing of the mesh pattern.
- a metal mesh structure capable of maintaining or improving antenna characteristics while improving transparency and visibility in a metal mesh line structure.
- FIG. 1 illustrates a method of forming a metal mesh pattern in the form of a transparent electrode according to an embodiment.
- FIG. 2 illustrates a method of forming a metal mesh pattern in the form of a transparent electrode according to another embodiment.
- 3a and 3b show a structure of a highly conductive metal mesh pattern according to an embodiment.
- 4A and 4B show a conductive layer structure applied as a single layer structure and a double layer structure on a dielectric substrate.
- FIG. 5 is a graph showing the sheet resistance value versus the cross-sectional area of the mesh pattern in the conductor electrode according to the conductive layer structure according to the present specification.
- 6 and 7 show cross-sectional shapes of dielectric structures and conductive layer structures according to different embodiments of the present specification.
- FIG. 8 shows an antenna radiator (antenna element) and a feeding pattern (feeding line) of a transparent antenna module having a metal mesh pattern formed of a conductive layer having a double-layer structure according to the present specification.
- FIG. 9 shows a configuration in which an antenna element having a metal mesh lattice structure according to the present specification is connected to a terminal unit through a feed line.
- FIGS. 8 and 9 shows a metal mesh lattice structure of the antenna element and the feed line of FIGS. 8 and 9 .
- FIG. 11 shows a cross-section of a conductive layer of a metal mesh pattern according to an embodiment.
- FIG. 12 shows a cross section in which the first conductive layer and the second conductive layer corresponding to the plating layer of the metal mesh pattern according to the embodiment are formed.
- 13a and 13b show electronic devices in which a transparent antenna module according to the present specification can be implemented.
- FIG. 14 shows a flowchart of a method of manufacturing a transparent antenna module according to the present specification.
- FIG. 15 shows a flowchart of a method of manufacturing a transparent antenna module having a multi-layer structure according to the present specification.
- Electronic devices described in this specification include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation devices, slate PCs, and the like.
- PDAs personal digital assistants
- PMPs portable multimedia players
- slate PCs slate PCs
- tablet PC ultrabook
- wearable device eg, watch type terminal (smartwatch), glass type terminal (smart glass), HMD (head mounted display)
- FIG. 1 illustrates a method of forming a metal mesh pattern in the form of a transparent electrode according to an embodiment.
- the implant mold can be prepared (prepare).
- a dielectric structure 1030 in the form of a UV resin may be disposed on the dielectric substrate 1010 corresponding to the transparent substrate.
- the dielectric structure 1030 and the implant mold may be coupled so that the dielectric structure 1030 in the form of UV resin disposed on the dielectric substrate 1010 is stamped.
- the dielectric structure 1030 in the form of UV resin disposed by removing the implant mold may be formed in a stamped shape. Accordingly, the dielectric structures may be formed to be spaced apart by a gap region of a predetermined interval in at least one axial direction.
- a conductive layer 1020a of a metal mesh pattern may be formed in a gap region formed in a dielectric structure at a predetermined interval.
- a transparent antenna module may be implemented by such a metal mesh pattern.
- an object of the present invention is to form a transparent conductive pattern that is invisible to the user's eyes by reducing the visibility by minimizing the line width of the electrode pattern.
- a highly transparent substrate having high visible light transmittance may be used as the substrate used in the present specification.
- the resistance of the electrode is determined by the shape of the electrode pattern or the electrode material used, and can be designed in various ways according to the use of the part in which the electrode is used.
- a transparent electrode for a touch screen sensor used in a smartphone or tablet display can be used as long as the sheet resistance is 80 to 100 ⁇ / ⁇ .
- a sheet resistance characteristic of 2 ⁇ or less which is much smaller than the sheet resistance value of a touch sensor electrode, is required. This is because an antenna having a minimum resistance must be implemented in order to reduce loss of a radio signal.
- the antenna radiator is formed in the form of a metal mesh to make a transparent antenna, it is designed and manufactured to realize the desired sheet resistance value and transparency by considering the specific resistance of the electrode material used, the line width and thickness of the mesh pattern, and the spacing between patterns. shall.
- techniques such as photolithography & etching, sputtering, SAP (Self Additive Process), and implant may be applied to the process of manufacturing the metal mesh pattern.
- An appropriate manufacturing method may be selected in consideration of process capability, process cost, and mass productivity of each manufacturing method.
- Semiconductor processes such as photolithography and etching can realize fine line widths, but costs may increase.
- Sputtering is time-consuming and expensive. In the SAP process, it is difficult to implement fine patterns, which can increase visibility during pattern production.
- the implant process is a process that is relatively simple and can produce fine patterns with a low-cost process and can secure mass production, but it is difficult to lower the sheet resistance value, which is the most important performance of the electrode, below a certain level.
- the form of the metal material used to form the fine conductive patterns by the implant process is in the form of metal ink or metal paste, which is a compound of metal and organic matter.
- organic matter having a high resistance value compared to the high conductivity of metal is included. Even if the organic components of the ink or paste are volatilized through heat treatment during the process, they cannot be completely removed. Therefore, even a very small amount of remaining organic matter may act as an impurity to increase resistance.
- the metal component sintered from the metal-organic compound is crystallized in the form of particles or rods, when the connection (contact) between metal particles is uncertain, resistance also increases.
- a method of manufacturing a metal mesh by an implant process is to a) manufacture a mold having a desired pattern, b) form a UV curing resin on a substrate, and c) stamp the mold into the resin. there is. d) In addition, the mold may be removed and cured by irradiation with ultraviolet rays. and e) printing the metal ink or metal paste on the patterned resin structure. Finally, the organic matter is dried through heat treatment and the metal is sintered.
- the metal mesh by such an implant method has high resistance for the reasons described above, and in order to lower it, it is necessary to increase the line width or increase the thickness. However, since this becomes a situation in which the transmittance of the transparent electrode is lowered, the function as a transparent electrode is lost, and there is a limit to lowering the resistance by increasing the line width or thickness of the pattern.
- FIG. 2 illustrates a method of forming a metal mesh pattern in the form of a transparent electrode according to another embodiment.
- a method of manufacturing a metal mesh by an implant process is a) manufacturing a mold having a desired pattern, b) forming a dielectric structure 1030 in the form of a UV curing resin on a dielectric substrate 1010, and c) A mold may be stamped into dielectric structure 1030 . d) In addition, the mold may be removed and cured by irradiation with ultraviolet rays.
- the dielectric structure on which the first conductive layer 1021 printed in a metal mesh pattern to a partial thickness is formed serves as a seed layer for electroless plating during plating.
- a second conductive layer 1022 is formed by forming metal as thick as the dielectric structure on the printed metal particles through a plating process.
- the metal formed by plating has a layer structure that is not in the form of particles or rods compared to the metal formed by ink or paste. Accordingly, the metal plating layer has excellent electrical contact and can be used as a main connection path for electrical signal transmission.
- the resistance value can be adjusted by adjusting the thickness of the metal plating layer, and the thickness of the printing metal layer used as the seed layer can be thinned. Accordingly, the multi-layer conductive layer 1020 in which the second conductive layer 1022 is formed on the first conductive layer 1021 may be disposed in the gap region of the dielectric structure 1030 .
- Figures 3a and 3b shows the structure of the highly conductive metal mesh pattern according to the embodiment.
- 3A is a front view of a high-conductivity metal mesh lattice structure and an enlarged view of the lattice structure.
- FIG. 3B shows a side view of the highly conductive metal mesh lattice structure of FIG. 3A.
- FIG. 3A shows a metal mesh lattice structure manufactured by the manufacturing process of FIG. 2 .
- a second conductive layer 1022 may be formed in a gap region that is an empty space between dielectric structures 1022 .
- a first conductive layer 1021 may be formed in a lower region of the second conductive layer 1022 .
- the first conductive layer 1021 may also be formed in a gap region that is an empty space between the dielectric structures 1022 .
- a dielectric substrate 1010 capable of supporting a metal mesh pattern
- a dielectric structure 1030 made of a UV photocurable resin is disposed on an upper surface of the dielectric substrate 1010 .
- the first and second conductive layers 1021 and 1022 are filled with a metal material between the dielectric structure 1030 to form a conductive electrode mesh.
- the metal material is formed to a thickness lower than the thickness of the resin structure. Then, a metal layer is formed on the filled metal material through a plating process. The thickness of the metal plating layer does not exceed the remaining thickness after the metal material is filled in the resin structure.
- Glass, silicon wafer, etc. can be used as a material used as a substrate, and an organic substrate material such as polyimide can be used to manufacture a flexible conductive electrode mesh.
- an organic substrate material such as polyimide
- transparent flexible materials such as PET, COP, and CPI may be used to produce a transparent conductive mesh pattern.
- the light transmittance of the transparent material used at this time is preferably 85% or more.
- a substrate having a low dielectric constant and dielectric loss should be used to minimize loss of radio signals, and a material having a dielectric constant of 3.0 or less and a dielectric loss of 0.007 or less is preferable.
- the UV resin used as the structure of the metal mesh pattern may use a thermosetting resin or a photocurable resin.
- a photocurable resin is used so that the material is not damaged by the heat treatment process.
- a metal material filling between structures may be aluminum, copper, silver, gold, or the like to be used as a conductor.
- other types of metals may be used depending on the use and purpose and are not limited to the above types of metals.
- a conductive oxide, a conductive carbon composite material, and the like may be used in addition to a single metal.
- a printing process, a deposition process, or a transfer process may be used as a forming process of the conductor to be used, and a printing process is effective as a process of filling metal materials between structures formed on a substrate.
- the form of metal to fill between structures in the printing process is to be in the form of ink or paste in which metal and organic matter are mixed.
- the metal ink or paste that fills the structure serves as a seed layer for plating, so the metal content needs to be 5% or more.
- the shape of the metal mesh pattern is shown as a straight line pattern in which each mesh line crosses vertically, but is not limited thereto. As another example, each mesh line may be changed into a mesh pattern of various shapes, such as a rectangle, a rhombus, a triangle, or a hexagon, and applied.
- FIGS. 4A and 4B show a conductive layer structure applied in a single layer structure and a double layer structure on a dielectric substrate.
- a conductive layer 1020a may be formed on a dielectric substrate 1010 in a single layer structure.
- the conductive layer 1020a may have a rectangular parallelepiped shape having a predetermined width (W), a predetermined length (L) and a predetermined thickness (t).
- a conductive layer 1020 may be formed on a dielectric substrate 1010 in a double layer structure.
- the conductive layer 1020 may include a first conductive layer 1021 and a second conductive layer 1022 disposed on an upper region of the first conductive layer 1021 .
- the first conductive layer 1021 may contact the dielectric substrate 1010 to have a first thickness t1.
- the first conductive layer 1021 may have a rectangular parallelepiped shape having a predetermined width (W) and a predetermined length (L) and having a first thickness (t1).
- the second conductive layer 1022 may contact the first conductive layer 1021 to have a second thickness t2.
- the second conductive layer 1022 may have a rectangular parallelepiped shape having a predetermined width (W) and a predetermined length (L) and having a second thickness (t2).
- dielectric structures 1030 in the form of a UV resin may be disposed on both sides of the conductive layers 1020a and 1020 shown in FIGS. 4A and 4B.
- each conductor is connected in parallel. Therefore, in order to have a low total resistance value or high conductivity, it is desirable to form a layer having a low resistance to a larger thickness.
- the first conductive layer 1021 of the conductive layer 1020 proposed in this specification is formed of metal ink or paste, it has a high resistance value due to the influence of organic materials.
- the second conductive layer 1022 of the conductive layer 1020 is formed by plating, the inherent conductivity of the metal can be fully utilized.
- the first thickness t1 of the first conductive layer 1021 and the second thickness of the second conductive layer 1022 ( t2) can be determined.
- the thickness ratio between the first thickness t1 of the first conductive layer 1021 and the second thickness t2 of the second conductive layer 1022 may be in the range of 1:9 to 9:1. , but is not limited thereto.
- the first thickness t1 of the first conductive layer 1021 having low resistance may be formed thicker than the second thickness t2 of the second conductive layer 1022 . Accordingly, the thickness ratio between the first thickness t1 of the first conductive layer 1021 and the second thickness t2 of the second conductive layer 1022 may be in the range of 1:1 to 9:1. , but is not limited thereto. Accordingly, since a material having low specific resistance and high conductivity has an effect of being laminated on the second conductive layer 1022, an effect of reducing the sheet resistance of the entire conductor layer occurs as shown in Equation 1.
- FIG. 5 is a graph showing the sheet resistance value versus the cross-sectional area of the mesh pattern in the conductor electrode according to the conductive layer structure according to the present specification.
- the total conductor resistance or sheet resistance is inversely proportional to the cross-sectional area, as shown in FIG. 5, the larger the cross-sectional area, the lower the sheet resistance value.
- the sheet resistance value is in inverse proportion to the thickness of the conductive layer.
- the first thickness t1 of the low resistance first conductive layer 1021 may be formed to be thicker than the second thickness t2 of the second conductive layer 1022 .
- FIGS. 6 and 7 show cross-sectional shapes of dielectric structures and conductive layer structures according to different embodiments of the present specification.
- FIG. 6 shows a structure in which first and second conductive layers 1021 and 1022 are disposed between the cross-sectional shape of the dielectric structure 1030 formed in a rectangular cross-sectional shape and the dielectric structure 1030 .
- FIG. 7 shows a structure in which first and second conductive layers 1021 and 1022 are disposed between the dielectric structure 1030b and the cross-sectional shape of the dielectric structure 1030b having an inverted trapezoidal cross-sectional shape.
- a first conductive layer 1021 and second conductive layers 1021 and 1022 disposed on the first conductive layer 1021 may be referred to as a conductive layer 1020 .
- the shape of the dielectric structure 1030 serves to determine the cross-sectional shape and cross-sectional area of the conductive layer 1020.
- the ratio t/W of the width and thickness in a rectangular cross-section is called an aspect ratio, and the dielectric structure 1030 is manufactured by determining the aspect ratio when designing the pattern according to the purpose of the conductor mesh pattern. That is, in order to manufacture a transparent conductor electrode by forming a conductor metal mesh pattern, a cross-sectional shape having a high aspect ratio with a high thickness and a narrow width can reduce sheet resistance while increasing transmittance.
- the conductive layer 1020 may be formed in a rectangular cross-sectional shape with an aspect ratio of t/W ⁇ 3.
- the conductive layer 1020 may be composed of a single conductive layer 1020a as shown in FIG. 4A or as a double conductive layer 1020 as shown in FIG. 4B.
- the dual conductive layer 1020 may include a first conductive layer 1021 in a lower area and a second conductive layer 1022 in an upper area.
- the plating process is performed using the first conductive layer 1021 as a seed layer, it can be configured with a cross-section in the form of an inverted trapezoid with a wide entrance to the structure and a narrow inside to easily form a plating layer even with a fine line width.
- the ratio between the inlet and the base of the inverted trapezoid is expressed as the angle ⁇ between the plane perpendicular to the substrate and the inclined plane of the trapezoid
- the cross-sectional shape of the inverted trapezoid with 0 ⁇ 45° is preferable.
- a first conductive layer 1021 and a second conductive layer 1022 are formed on the front surface of the dielectric substrate, and the first ground layer 1051 and the second conductive layer 1051 are formed on the rear surface of the dielectric substrate.
- a ground layer 1052 may be formed.
- an implant process may be performed to form first gap regions and second gap regions on the front and rear surfaces of the dielectric substrate 1010 .
- the first ground layer 1051 may be formed to have a first thickness by contacting the dielectric substrate in a gap region formed on the rear surface of the dielectric substrate 1010 .
- the second ground layer 1052 may be formed to have a second thickness by contacting the first ground layer 1051 in a gap region formed on the rear surface of the dielectric substrate 1010 .
- a ground layer 1050 having a metal mesh grid structure may be formed by the first ground layer 1051 and the second ground layer 1052 .
- a gap region in which the first and second ground layers 1051 and 1052 are disposed may be formed by the second dielectric structure 1030b on the rear surface of the dielectric substrate.
- the lattice spacing and lattice crossing points of the first and second conductive layers 1021 and 1022 may be different from each other and the lattice spacing and lattice crossing points of the first and second ground layers 1051 and 1052 may be different from each other.
- a separate second dielectric substrate 1010b is disposed below the ground layer 1050 of the mesh grid structure, and the third conductive layer 1023 and the fourth conductive layer ( 1024) may be placed.
- a third dielectric structure 1030c may be disposed on the rear surface of the second dielectric substrate 1010b such that the third conductive layer 1023 and the fourth conductive layer 1024 are disposed in the gap region.
- the third conductive layer 1023 and the fourth conductive layer 1024 may form separate power supply lines.
- a signal of the feed line may be transmitted to the first and second conductive layers 1021 and 1022 on which the antenna element is disposed through the slot region (ie, the second dielectric structure) where the ground layer 1050 is not disposed.
- the metal mesh pattern formed of the conductive layer having a single-layer or double-layer structure according to the present specification has been described. Meanwhile, a transparent antenna module having a metal mesh pattern formed of a conductive layer having a double-layer structure will be described.
- FIG. 8 shows an antenna radiator (antenna element) and a feeding pattern (feeding line) of a transparent antenna module having a metal mesh pattern formed of a conductive layer having a double-layer structure according to the present specification.
- the antenna element 1110 of FIG. 8 and the feed line ( 1120) may be formed.
- the transparent antenna module 1100 includes a dielectric substrate 1010; It may be configured to include dielectric structures (dielectric structures, 1030, 1030b) and conductive layers (1020a, 1020).
- the dielectric structures 1030 and 1030b may be formed by contacting an upper portion of the dielectric substrate 1010 .
- the dielectric structures 1030 and 1030b may be formed to be spaced apart from each other by a predetermined gap area in at least one axial direction.
- the dielectric structures 1030 and 1030b may be formed in one axis direction and another axis direction substantially perpendicular to the one axis direction. Accordingly, the metal mesh lattice structure formed by the conductive layers 1020a and 1020 may be formed as a rectangular mesh lattice structure as shown in FIGS. 3A and 8 , but is not limited thereto.
- the conductive layer 1020 may include a first conductive layer 1021 and a second conductive layer 1022 disposed in an upper region of the first conductive layer 1021 .
- the first conductive layer 1021 may contact the dielectric substrate 1010 to have a first thickness t1.
- the first conductive layer 1021 may have a rectangular parallelepiped shape having a predetermined width (W) and a predetermined length (L) and having a first thickness (t1).
- the second conductive layer 1022 may contact an upper portion of the first conductive layer 1021 to have a second thickness t2 .
- the second conductive layer 1022 may have a rectangular parallelepiped shape having a predetermined width (W) and a predetermined length (L) and having a second thickness (t2).
- the transparent antenna module 1100 is composed of a first conductive layer 1021 and a second conductive layer 1022, and a transparent metal mesh pattern formed in at least one axial direction is configured to radiate a wireless signal.
- the dielectric structures 1030 and 1030b may be formed of UV resin disposed in contact with the top of the dielectric substrate 1010, but are not limited thereto.
- the dielectric structures 1030 and 1030b may be stamped with UV resin using an imprint mold and spaced apart by a predetermined gap area to form a dielectric grid structure.
- the conductive layers 1020a and 1020 may be disposed in the empty space formed by the dielectric lattice structure of the dielectric structures 1030 and 1030b to form a metal lattice structure.
- a transparent metal mesh pattern corresponding to the metal lattice structure on which the conductive layers 1020a and 1020 are disposed may constitute the antenna element 1110 and the feed line 1120 radiating radio signals.
- the first conductive layer 1021 may be formed by printing metal ink or metal paste in the gap region to a first thickness t1 lower than the thickness of the dielectric structures 1030 and 1030b.
- the second conductive layer 1022 may be formed on the printed metal ink or metal paste of the first conductive layer 1021 to a second thickness t2 by a plating process.
- the second conductive layer 1022 may serve as a main connection path for wireless signals. Since electromagnetic waves are mainly formed in the surface regions of the conductive layers 1020a and 1020, the second conductive layer 1022 can act as a main connection path for wireless signals.
- the first conductive layer 1021 mainly functions as a layer combined with the dielectric structures 1030 and 1030b and the second conductive layer 1022 .
- the total thickness of the conductive layer 1020 corresponding to the sum of the first thickness t1 of the first conductive layer 1021 and the second thickness t2 of the second conductive layer 1022 and the dielectric structures 1030 and 1030
- the difference in thickness of may be formed within a predetermined range.
- the second thickness t2 of the second conductive layer 1022 having a low resistance value, that is, high conductivity, may be formed to a smaller thickness than the first thickness t1 of the first conductive layer 1021 . Accordingly, it is possible to reduce the loss of the transparent metal mesh pattern by reducing the sheet resistance according to the transmission of the wireless signal.
- the dielectric structure 1030b may be inclined at an angle of 45 degrees or less with respect to a vertical axis.
- the width of the gap region of the dielectric structure 1030b may be reduced as it is adjacent to the dielectric substrate 1010 .
- the width of the gap region in the lower region of the dielectric structure 1030b may be narrower than the width of the gap region in the upper region.
- the first conductive layer 1021 may be formed as a hexahedron having an inverted trapezoidal cross-section such that the area of the upper region is larger than the area of the lower region.
- the second conductive layer 1022 may also be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- the width and thickness of the dielectric structure and the conductive layer structure constituting the transparent antenna module presented in this specification may be adjusted depending on the application.
- the thickness of the dielectric structures 1030 and 1030b may be greater than the width of the gap region of the dielectric structures 1030 and 1030b.
- the total thickness t may be larger than the average width W of the gap region.
- the total thickness t may be greater than the maximum width W2 of the gap region.
- the thickness t2 of the second conductive layer 1022 through which electromagnetic waves pass may be greater than the average width W of the gap region.
- the thickness t2 of the second conductive layer 1022 through which electromagnetic waves pass may be greater than the maximum width W2 of the gap region.
- the thickness t of the conductive layer 1020 may be greater than the width of the conductive layer 1020 .
- the second thickness t2 of the second conductive layer 1022 may be greater than the width of the second conductive layer 1022 through which electromagnetic waves mainly pass. Therefore, it is possible to reduce the sheet resistance while increasing the transmittance of the antenna element formed of the transparent metal mesh pattern.
- the first conductive layer 1021 may be formed by volatilizing organic components of metal ink or metal face through a heat treatment process.
- the dielectric structures 1030 and 1030b may be formed of a photocurable resin so as not to be damaged by a heat treatment process.
- the second conductive layer 1022 may be formed on the first conductive layer 1021 through a plating process.
- the metal content of the second conductive layer 1022 may be set higher than that of the first conductive layer 1021 . Accordingly, the conductivity of the second conductive layer 1022 may be higher than that of the first conductive layer 1021 .
- the transparent antenna module 1100 may be configured to include the antenna element 1110 and the feed line 1120.
- the antenna element 1110 may be configured such that the transparent metal mesh pattern is disposed at first and second intervals in the first axis direction and the second axis direction to radiate radio signals.
- the length L1 of the antenna element 1110 may be the same as the operating wavelength corresponding to the operating frequency or may be set to 1/2 to 1/4, but is not limited thereto.
- the power supply line 1120 may be configured to be connected to the antenna element 1110 to apply a radio signal to the antenna element 1110.
- the length L2 of the feed line 1120 may be designed to be shorter than the length L1 of the antenna element 1110 to minimize the total antenna length.
- An inset region (R3) is formed in a region where the antenna element 1110 and the feed line 1120 are connected without a separate matching unit for impedance matching between the antenna element 1110 and the feed line 1120, for example, an impedance conversion unit.
- a mesh grid such as a mesh pattern may be removed from an inner area of the antenna element 1110 in the inset area.
- the mesh grid in the inset region and the mesh grid of the antenna element 1100 may be disconnected so that they are not connected.
- a mesh lattice may also be disposed in the dielectric area to maintain visibility with the mesh lattice of the antenna element 1110 and the feed line 1120 .
- the mesh lattice disposed in the dielectric region may be configured to be disconnected from the mesh lattice of the antenna element 1110 and the feed line 1120 .
- the power supply line 1120 and the antenna element 1110 may be formed of a metal mesh line including a first conductive layer 1021 and a second conductive layer 1022 .
- the first and second distances of the metal mesh lines forming the feed line 1120 and the antenna element 1110 in the first axial direction and in the second axial direction may be set to be the same. Accordingly, the antenna element of the transparent antenna module can be freely disposed in at least one of the first axial direction and the second axial direction within the display area having the same metal mesh spacing, thereby increasing the degree of freedom of arrangement.
- the first distance d1 and the second distance d2 in the first axial direction and the second axial direction may be set to be the same.
- the third distance and the fourth distance in the first axial direction and the second axial direction may be set differently.
- the third interval in the direction of the first axis which is the direction in which the current flows, may be set to be narrower than the fourth interval in the second axis direction.
- the third distance in the first axis direction may be set to be narrower than the first distance in the first axis direction of the antenna element 1110.
- the transparent antenna module according to the present specification is composed of an antenna element and a feed line having a metal mesh lattice structure as shown in FIG. 8, and the feed line may be connected to a metal pattern terminal part.
- FIG. 9 shows a configuration in which an antenna element having a metal mesh lattice structure according to the present specification is connected to a terminal unit through a power supply line.
- FIG. 10 shows a metal mesh lattice structure of the antenna element and the feed line of FIGS. 8 and 9 .
- An antenna element having a metal mesh lattice structure disclosed herein may be configured as a patch antenna element as shown in FIG. 8 or as a dipole antenna element as shown in FIG. 9 .
- the antenna element having the metal mesh lattice structure is not limited to a patch antenna element or a dipole antenna element, and can be changed into various types such as a monopole antenna and a loop antenna.
- the terminal unit 1130 for signal transmission and signal connection with other components may be made of metal filled with the entire area. there is. This is to form a terminal part with a maximum area to prevent signal loss due to contact in the terminal part 1130 to which the signal is connected. Meanwhile, since a structure for filling and supporting metal ink or paste is required in a printing process, it may not be easy to form the entire area of the terminal unit 1130 with metal.
- the line width of the mesh pattern and the ratio of the gap between the patterns can be adjusted as shown in FIG.
- the ratio of the line width of the mesh pattern and the spacing between the patterns may be the ratio of the pitch (p) to the line width (W) of the mesh pattern, that is, the distance from the center of one mesh pattern line width to the center of the adjacent mesh pattern line width, It is not limited to this.
- the terminal unit 1130 may be formed in a range of 1 ⁇ p/W ⁇ 10.
- the transparent antenna module disclosed herein may further include a terminal unit 1130 in the antenna element 1110 and the feed line 1120 .
- the line width W of the metal mesh pattern of the terminal unit 1130 may be set wider than that of the metal mesh pattern of the antenna element 1110 .
- the third distance d3 and the fourth distance d4 of the metal mesh pattern of the terminal unit 1130 in the first axial direction and the second axial direction are the third distance d3 and the fourth distance d4 of the metal mesh pattern of the antenna element 1110 of FIG. 8 . It may be set narrower than the first interval d1 and the second interval d2.
- FIG. 11 shows a cross-section of a conductive layer of a metal mesh pattern according to an embodiment.
- FIG. 12 shows a cross section in which the first conductive layer and the second conductive layer corresponding to the plating layer of the metal mesh pattern according to the embodiment are formed.
- FIG. 11 shows the entire height of the structure formed by a printing process using Ag ink.
- a conductive layer is formed by a printing process using a metal ink or paste
- it is difficult to form a dense layer This is because the ink or paste mixed with the organic material dries the organic material through heat treatment, so that the remaining metal particle layer contains pores.
- this causes an increase in sheet resistance of the formed conductor layer. This is similar to the mesh pattern manufactured in the form of metal fibers using metal ink or paste.
- the first conductive layer 1021 is formed with Ag ink
- the second conductive layer 1022 is formed by a plating process using the first conductive layer 1021 as a seed layer.
- Cu may be used as the plating material, and for example, a thickness ratio between the first conductive layer 1021 and the second conductive layer 1022 may be about 4:1, but is not limited thereto.
- the thickness ratio of the first conductive layer and the second conductive layer (plating layer) in the dielectric structure may be formed by setting an arbitrary thickness ratio within a range of about 1:9 to about 9:1.
- Table 1 shows the measured values of sheet resistance and transmittance of the mesh pattern according to the presence or absence of the plating process.
- the sheet resistance is as small as about 63%. This shows that the resistance of the plating layer is much lower than the resistance of the metal layer formed with the ink, so the overall sheet resistance value is lowered.
- FIGS. 13A and 13B show electronic devices in which a transparent antenna module according to the present specification can be implemented.
- FIG. 13A shows an example in which the transparent antenna module 1100 presented herein is applied to various electronic devices 1000.
- the electronic device 1000 may be at least one of a mobile terminal, a signage, a display device, a transparent AR/VR device, a vehicle, or a wireless audio/video device.
- the first antenna module and the second antenna module constituting the transparent antenna module may be disposed in an upper region, a lower region, or a side region of the electronic device 100 .
- the antenna element 1110 operating with vertical/horizontal polarization may be disposed in various forms on a display of an electronic device or vehicle.
- FIG. 11B shows an embodiment in which the antenna 1100 operating in vertical/horizontal polarization presented in this specification is applied to a robot.
- the antenna module 1100 may be disposed below the display 151b of the robot 1000b.
- the antenna module 1100 may be implemented as one of various combinations of the first antenna module 1100-1 and/or the second antenna module 1100-2 to operate as a multi-mode antenna.
- the first antenna module 1100-1 and the second antenna module 1100-2 may be implemented with different antenna elements disposed in different areas of the display.
- the first antenna module 1100-1 and the second antenna module 1100-2 may be implemented as a single antenna element connected to first and second feeders in the form of vertical/horizontal polarization.
- the transparent antenna module 1100 may operate in the 5G mmWave band.
- the antenna element of the transparent antenna module 1100 may be implemented as an array antenna.
- the robot 1000b may transmit or receive high-speed and large-capacity wireless data, for example, wireless AV data, with nearby electronic devices.
- the robot 1000b may interwork with the server 300 through a communication network under the control of a controller such as a device engine.
- the communication network may be a 5G communication network.
- the communication network can be implemented as a VPN or TCP bridge.
- the robot 1000b may access the MEC server 300 through a communication network. Since the robot 1000b interworks with the MEC server 300, such a robot/network system may be referred to as a cloud robotics system.
- the cloud robotics system is a system in which a cloud server such as the MEC server 300 processes functions necessary for the robot 1000b to perform a given mission.
- the transparent antenna module may be configured such that a transparent metal mesh pattern is formed on or inside a display of a mobile terminal, a display device, or a robot, or on or inside glass of a vehicle to radiate a wireless signal. there is.
- the transparent antenna module according to one aspect of the present specification has been described.
- a method of manufacturing a transparent antenna module according to another aspect of the present specification will be described.
- all the technical features described in the transparent antenna module may also be applied to the method of manufacturing the transparent antenna module below.
- the method of manufacturing a transparent antenna module includes a dielectric structure forming step (S100), an implant step (S200), a first conductive layer forming step (S300) and a second conductive layer forming step (S400). ) may be configured to include.
- a transparent antenna module manufacturing method starts (S).
- a dielectric structure may be formed on top of a dielectric substrate in a contact state.
- the dielectric structure may be formed to be spaced apart from each other by a predetermined gap area in at least one axial direction by using an implant mold.
- a first conductive layer may be formed in the gap region to have a first thickness (a first height) in contact with the dielectric substrate.
- a second conductive layer may be formed with a second thickness (second thickness) by contacting the upper portion of the first conductive layer.
- An antenna element composed of a transparent metal mesh pattern formed in at least one axial direction may be formed through the first conductive layer forming step ( S300 ) and the second conductive layer forming step ( S400 ).
- the first conductive layer may be formed by printing metal ink or metal paste in the gap region at a first height lower than the height of the dielectric structure.
- a second conductive layer may be formed to a second height by a plating process on the printed metal ink or metal paste of the first conductive layer.
- the second conductive layer may serve as a main connection path for radio signals radiated through the antenna element.
- the dielectric structure in the dielectric structure forming step (S100), is formed to be inclined at an angle of 45 degrees or less with respect to a vertical axis, so that the width of the gap region is reduced as it is adjacent to the dielectric substrate.
- the first conductive layer in the first conductive layer forming step ( S300 ), the first conductive layer may be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- the second conductive layer in the second conductive layer may be formed in a hexahedron having an inverted trapezoidal cross-section such that an area of an upper region is larger than an area of a lower region.
- the height of the dielectric structure may be greater than the width of the gap region of the dielectric structure. Accordingly, in the second conductive layer forming step (S400), the second height of the second conductive layer is formed to be greater than the width of the second conductive layer, thereby increasing the transmittance of the antenna element formed of the transparent metal mesh pattern and reducing the sheet resistance. can reduce
- the transparent antenna module manufacturing method disclosed in this specification may be applied to both the antenna layer and the ground layer.
- a predetermined step may be performed after the second conductive layer forming step (S400) in a structure in which the antenna layer and the ground layer share the same dielectric substrate.
- the first ground layer forming step ( S510 ) and the second ground layer forming step ( S520 ) may be further performed.
- an implant operation may be performed to implement gap regions on the front and rear surfaces of the dielectric substrate. Intervals and intersection points of metal mesh grids to be formed on the front and rear surfaces of the dielectric substrate may be formed at different positions.
- a first ground layer (first conductive layer) may be formed with a first height by contacting the dielectric substrate in the gap region formed on the rear surface of the dielectric substrate.
- a second ground layer (second conductive layer) may be formed with a second height by contacting the first ground layer in the gap region formed on the rear surface.
- FIG. 15 shows a flowchart of a method of manufacturing a transparent antenna module having a multi-layer structure according to the present specification. 2, 14 and 15, the method of manufacturing a transparent antenna module includes forming a dielectric structure (S100), implanting (S200), forming a first conductive layer (S300) and forming a second conductive layer. Step S400, forming the first ground layer (S510), and forming the second ground layer (S520) are performed.
- the second conductive layer forming step (S400) it may be determined whether all signal patterns have been formed (S450). In this regard, after forming the first and second conductive layers in the first area where the antenna element is disposed, forming the first conductive layer in the second area where the feed line is to be disposed (S300) and forming the second conductive layer ( S400) may be repeatedly performed.
- a slot region may be formed to be coupled with the power supply line.
- a dielectric structure forming step (S100), an implant step (S200), a first conductive layer forming step (S300) and a second The conductive layer forming step (S400) may be repeatedly performed again.
- a dielectric structure may be formed on one surface of the second dielectric substrate in a contact state.
- the dielectric structure may be formed to be spaced apart from each other in at least one axial direction by a gap area of a predetermined interval by using an implant mold.
- a first conductive layer may be formed in the gap region to have a first thickness (first height) in contact with the second dielectric substrate.
- a second conductive layer may be formed with a second thickness (second thickness) by contacting the upper portion of the first conductive layer.
- the second conductive layer forming step (S400) or the second ground layer forming step (S520) it is determined whether all signal patterns including the antenna element and the feed line have been formed (S450 and 450b).
- the first conductive layer forming step (S300) and the second conductive layer forming step (S400) may be repeatedly performed.
- the first conductive layer forming step (S300) and the second conductive layer forming step (S400) may be performed again on the feed line.
- the antenna element may be formed of a mesh lattice having first and second spacing
- the feed line may be formed of a mesh lattice having third and fourth spacing.
- the feed line may be formed using a dielectric mold capable of forming mesh lattices of third and fourth intervals.
- the dielectric structure forming step (S100) to the second conductive layer forming step (S400) may be repeated.
- the manufacturing method of the transparent antenna module is finished (E).
- the transparent antenna module according to the present specification and a method for manufacturing the same have been looked at.
- the technical effects of the transparent antenna module and the method for manufacturing the transparent antenna module according to this specification are described as follows.
- a transparent antenna module embedded in a display and a method for manufacturing the same can be provided.
- an antenna radiator may be implemented as a module with a transparent antenna having a metal mesh structure according to an implant process method for lowering a sheet resistance value.
- the present specification it can be designed and manufactured to realize a desired sheet resistance value and transparency in consideration of the specific resistance of the electrode material used, the line width, thickness, and spacing of the mesh pattern.
- a metal mesh structure capable of maintaining or improving antenna characteristics while improving transparency and visibility in a metal mesh line structure.
- the transparent antenna module and the method for manufacturing the transparent antenna module can be implemented as computer readable code on a program recorded medium.
- the computer-readable medium includes all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. , and also includes those implemented in the form of a carrier wave (eg, transmission over the Internet). Also, the computer may include a control unit of the terminal. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.
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Abstract
Description
| 구분 | Reference | 선폭(um) | 두게(um) | 단면적 (um2) |
면저항 (Ω/□) |
투과도 (%) |
| 도금 전 | 도 6 | 3.3 | 2.3 | 7.59 | 1.73 | 86 |
| 도금 후 | 도 7 | 3.1 | 1.5 | 4.65 | 1.1 | 85.6 |
Claims (20)
- 투명 안테나 모듈에 있어서,유전체 기판(dielectric substrate);상기 유전체 기판의 상부에 접촉되어 형성되고, 적어도 일 축 방향으로 소정 간격의 갭 영역만큼 이격되어 형성되는 유전체 구조물(dielectric structure);상기 갭 영역에 상기 유전체 기판과 접촉되어 제1 두께로 형성되는 제1 도전 층; 및상기 제1 도전 층의 상부에 접촉되어 제2 두께로 형성되는 제2 도전 층을 포함하고,상기 제1 도전 층과 상기 제2 도전 층으로 구성되고, 적어도 일 축 방향으로 형성된 투명 메탈 메쉬 패턴(transparent metal mesh patten)이 무선 신호를 방사하는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 유전체 구조물은,상기 유전체 기판의 상부에 접촉된 상태로 배치된 UV 레진으로 구성되고,상기 UV 레진이 임플린트 몰드(imprint mold)에 의해 스탬핑(stamping)되어 상기 소정 간격의 갭 영역만큼 이격되어 형성되는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 제1 도전 층은 상기 갭 영역에 상기 유전체 구조물의 높이보다 낮은 상기 제1 높이로 금속 잉크 또는 금속 페이스트가 프린트되어 형성되는, 투명 안테나 모듈.
- 제3 항에 있어서,상기 제2 도전 층은 상기 제1 도전 층의 프린트된 금속 잉크 또는 금속 페이스트 위에 도금 공정으로 상기 제2 높이만큼 형성되고,상기 제2 도전 층은 상기 무선 신호의 주 연결 통로인 것을 특징으로 하는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 제1 도전 층의 상기 제1 높이와 상기 제2 도전 층의 상기 제2 높이의 합에 해당하는 도전 층의 전체 높이와 상기 유전체 구조물의 높이의 차이는 소정 범위 이내로 형성되는 것을 특징으로 하는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 제2 도전 층의 상기 제2 높이는 상기 제1 도전 층의 상기 제1 높이보다 높은 높이로 형성되어, 상기 무선 신호의 면 저항을 감소시켜 상기 투명 메탈 메쉬 패턴의 손실을 저감하는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 유전체 구조물은 수직 축을 기준으로 45도 이하의 각도로 경사지게 형성되어, 상기 갭 영역의 너비가 상기 유전체 기판에 인접함에 따라 감소하는, 투명 안테나 모듈.
- 제7항에 있어서,상기 제1 도전 층은 상부 영역의 면적이 하부 영역의 면적보다 크도록 단면적이 역 사다리꼴 형상인 육면체로 형성되고,상기 제2 도전 층은 상부 영역의 면적이 하부 영역의 면적보다 크도록 단면적이 역 사다리꼴 형상인 육면체로 형성되는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 유전체 구조물의 상기 갭 영역의 너비보다 상기 유전체 구조물의 두께가 더 크게 형성되는, 투명 안테나 모듈.
- 제9 항에 있어서,상기 제1 도전 층의 너비보다 상기 제1 도전 층의 상기 제1 두께가 더 크게 형성되어, 상기 투명 메탈 메쉬 패턴으로 형성된 안테나 소자의 투과도를 높이면서 면 저항을 감소시키는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 제1 도전 층은 열 처리 공정을 통해 금속 잉크 또는 금속 페이스의 유기물 성분이 휘발되어 형성되고,상기 유전체 구조물은 상기 열 처리 공정에 의한 손상이 발생하지 않도록 광경화성 수지로 형성되는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 제2 도전 층은 상기 제1 도전 층의 위에 도금 공정을 통해 형성되고,상기 제2 도전 층의 금속의 함량이 상기 제1 도전 층의 금속 함량보다 높게 설정되어, 상기 제2 도전 층의 도전율이 상기 제1 도전 층의 도전율보다 높은 것을 특징으로 하는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 투명 메탈 메쉬 패턴이 제1 축 방향 및 제2 축 방향으로 제1 간격 및 제2 간격으로 배치되어, 무선 신호를 방사하도록 구성된 안테나 소자를 더 포함하고,상기 안테나 소자의 길이는 동작 주파수에 대응하는 동작 파장과 같거나 1/2 내지 1/4로 설정되는, 투명 안테나 모듈.
- 제13항에 있어서,상기 안테나 소자에 무선 신호를 인가하도록 상기 안테나 소자와 연결되도록 구성된 급전 라인을 더 포함하고,상기 급전 라인 및 상기 안테나 소자는 상기 제1 도전 층 및 상기 제2 도전 층을 포함하는 메탈 메쉬 라인으로 형성되고,상기 급전 라인과 상기 안테나 소자를 형성하는 상기 메탈 메쉬 라인의 상기 제1 축 방향 및 제2 축 방향의 제1 간격 및 제2 간격은 동일하게 설정되는, 투명 안테나 모듈.
- 제14항에 있어서,상기 급전 라인과 연결되도록 구성된 단자 부를 더 포함하고,상기 단자 부의 메탈 메쉬 패턴의 선 폭은 상기 안테나 소자의 메탈 메쉬 패턴의 선폭보다 더 넓게 설정되고,상기 단자 부의 메탈 메쉬 패턴의 제1 축 방향 및 제2 축 방향의 제3 간격 및 제4 간격은 상기 안테나 소자의 메탈 메쉬 패턴의 상기 제1 간격 및 상기 제2 간격보다 더 좁게 설정되는, 투명 안테나 모듈.
- 제1 항에 있어서,상기 유전체 기판의 전면 및 배면에 제1 갭 영역 및 제2 갭 영역이 형성되도록 임플린트 공정이 수행되고,상기 유전체 기판의 배면에 형성된 갭 영역에 유전체 기판과 접촉되어 제1 두께로 형성되는 제1 그라운드 층; 및상기 배면에 형성된 갭 영역에 제1 그라운드 층과 접촉되어 제2 두께로 형성되는 상기 제2 그라운드 층을 더 포함하는, 투명 안테나 모듈.
- 투명 안테나 모듈을 제조하는 방법에 있어서,유전체 기판(dielectric substrate)의 상부에 유전체 구조물(dielectric structure)을 접촉된 상태로 형성하는 유전체 구조물 형성 단계;임플린트 몰드를 이용하여 상기 유전체 구조물을 적어도 일 축 방향으로 소정 간격의 갭 영역만큼 이격되게 형성하는 임플린트 단계;상기 갭 영역에 상기 유전체 기판과 접촉되어 제1 높이로 제1 도전 층을 형성하는 제1 도전 층 형성 단계; 및상기 제1 도전 층의 상부에 접촉되어 제2 높이로 제2 도전 층을 형성하는 제2 도전 층 형성 단계를 포함하고,상기 제1 도전 층 형성 단계 및 상기 제2 도전 층 형성 단계를 통해 적어도 일 축 방향으로 형성된 투명 메탈 메쉬 패턴(transparent metal mesh patten)으로 구성된 안테나 소자가 형성되는, 투명 안테나 모듈의 제조 방법.
- 제17 항에 있어서,상기 제1 도전 층 형성 단계에서, 상기 유전체 구조물의 높이보다 낮은 상기 제1 높이로 금속 잉크 또는 금속 페이스트를 상기 갭 영역에 프린트하여 상기 제1 도전 층을 형성하고,상기 제2 도전 층 형성 단계에서, 상기 제1 도전 층의 프린트된 금속 잉크 또는 금속 페이스트 위에 도금 공정으로 상기 제2 높이만큼 상기 제2 도전 층을 형성하고,상기 제2 도전 층은 상기 안테나 소자를 통해 방사되는 무선 신호의 주 연결 통로인 것을 특징으로 하는, 투명 안테나 모듈의 제조 방법.
- 제17 항에 있어서,상기 유전체 구조물 형성 단계에서,상기 유전체 구조물은 수직 축을 기준으로 45도 이하의 각도로 경사지게 형성되어, 상기 갭 영역의 너비가 상기 유전체 기판에 인접함에 따라 감소되고,상기 제1 도전 층 형성 단계에서,상기 제1 도전 층은 상부 영역의 면적이 하부 영역의 면적보다 크도록 단면적이 역 사다리꼴 형상인 육면체로 형성되고,상기 제2 도전 층 형성 단계에서,상기 제2 도전 층은 상부 영역의 면적이 하부 영역의 면적보다 크도록 단면적이 역 사다리꼴 형상인 육면체로 형성되는, 투명 안테나 모듈의 제조 방법.
- 제17 항에 있어서,상기 임플린트 단계에서 상기 유전체 기판의 전면 및 배면에 갭 영역이 형성되도록 임플린트 동작이 수행되고,상기 유전체 기판의 배면에 형성된 갭 영역에 유전체 기판과 접촉되어 제1 높이로 제1 그라운드 층을 형성하는 제1 그라운드 층 형성 단계; 및상기 배면에 형성된 갭 영역에 제1 그라운드 층과 접촉되어 제2 높이로 제2 그라운드 층을 형성하는 제2 그라운드 층 형성 단계를 더 포함하는, 투명 안테나 모듈의 제조 방법.
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| US18/709,296 US20250343344A1 (en) | 2021-11-11 | 2021-11-11 | Transparent antenna module and method for manufacturing same |
| PCT/KR2021/016448 WO2023085461A1 (ko) | 2021-11-11 | 2021-11-11 | 투명 안테나 모듈 및 이를 제조하는 방법 |
| KR1020247009417A KR20240100342A (ko) | 2021-11-11 | 2021-11-11 | 투명 안테나 모듈 및 이를 제조하는 방법 |
| EP21964171.9A EP4432464A4 (en) | 2021-11-11 | 2021-11-11 | TRANSPARENT ANTENNA MODULE AND MANUFACTURING METHOD THEREOF |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090092278A (ko) * | 2006-12-27 | 2009-08-31 | 히다치 가세고교 가부시끼가이샤 | 오목판 및 오목판을 이용하는 도체층 패턴을 갖는 기재 |
| US20150313008A1 (en) * | 2013-02-28 | 2015-10-29 | Todd Mathew Spath | Multi-layer micro-wire structure |
| KR20190071411A (ko) * | 2017-12-14 | 2019-06-24 | 한국과학기술원 | 투명 안테나, 투명 안테나 결합형 디바이스 및 제조방법 |
| KR20210127760A (ko) * | 2019-08-22 | 2021-10-22 | 엘지전자 주식회사 | 투명 안테나를 구비하는 전자 기기 |
| KR102322045B1 (ko) * | 2021-02-19 | 2021-11-05 | 동우 화인켐 주식회사 | 안테나 소자 및 이를 포함하는 화상 표시 장치 |
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| JP7172211B2 (ja) * | 2017-07-28 | 2022-11-16 | Tdk株式会社 | 導電性基板、電子装置及び表示装置 |
| GB201804622D0 (en) * | 2018-03-22 | 2018-05-09 | Central Glass Co Ltd | Method of producing a vehicle glass assembly |
| JP7587758B2 (ja) * | 2019-05-07 | 2024-11-21 | 大日本印刷株式会社 | 配線基板および配線基板の製造方法 |
| TWI905166B (zh) * | 2020-04-09 | 2025-11-21 | 日商大日本印刷股份有限公司 | 配線基板及配線基板之製造方法 |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090092278A (ko) * | 2006-12-27 | 2009-08-31 | 히다치 가세고교 가부시끼가이샤 | 오목판 및 오목판을 이용하는 도체층 패턴을 갖는 기재 |
| US20150313008A1 (en) * | 2013-02-28 | 2015-10-29 | Todd Mathew Spath | Multi-layer micro-wire structure |
| KR20190071411A (ko) * | 2017-12-14 | 2019-06-24 | 한국과학기술원 | 투명 안테나, 투명 안테나 결합형 디바이스 및 제조방법 |
| KR20210127760A (ko) * | 2019-08-22 | 2021-10-22 | 엘지전자 주식회사 | 투명 안테나를 구비하는 전자 기기 |
| KR102322045B1 (ko) * | 2021-02-19 | 2021-11-05 | 동우 화인켐 주식회사 | 안테나 소자 및 이를 포함하는 화상 표시 장치 |
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| Title |
|---|
| See also references of EP4432464A4 * |
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| EP4432464A1 (en) | 2024-09-18 |
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