WO2023182829A1 - 안테나 기판 - Google Patents
안테나 기판 Download PDFInfo
- Publication number
- WO2023182829A1 WO2023182829A1 PCT/KR2023/003863 KR2023003863W WO2023182829A1 WO 2023182829 A1 WO2023182829 A1 WO 2023182829A1 KR 2023003863 W KR2023003863 W KR 2023003863W WO 2023182829 A1 WO2023182829 A1 WO 2023182829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- protective layer
- antenna
- circuit
- disposed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
-
- 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
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
-
- 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
- H01Q1/2283—Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W44/00—Electrical arrangements for controlling or matching impedance
- H10W44/20—Electrical arrangements for controlling or matching impedance at high-frequency [HF] or radio frequency [RF]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
- H10W74/111—Encapsulations, e.g. protective coatings characterised by their shape or disposition the semiconductor body being completely enclosed
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials
- H10W74/47—Encapsulations, e.g. protective coatings characterised by their materials comprising organic materials, e.g. plastics or resins
- H10W74/473—Encapsulations, e.g. protective coatings characterised by their materials comprising organic materials, e.g. plastics or resins containing a filler
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W44/00—Electrical arrangements for controlling or matching impedance
- H10W44/20—Electrical arrangements for controlling or matching impedance at high-frequency [HF] or radio frequency [RF]
- H10W44/241—Electrical arrangements for controlling or matching impedance at high-frequency [HF] or radio frequency [RF] for passive devices or passive elements
- H10W44/248—Electrical arrangements for controlling or matching impedance at high-frequency [HF] or radio frequency [RF] for passive devices or passive elements for antennas
Definitions
- the embodiment relates to an antenna substrate and an antenna device including the same.
- mmWave ultra-high frequency bands
- This high frequency band is called mmWave due to the length of the wavelength.
- integration technologies such as beamforming, massive MIMO, and array antenna are used in the 5G communication system. It is being developed.
- a dielectric layer with a high dielectric constant is disposed on the uppermost or lowermost side of the substrate. Additionally, the high dielectric constant dielectric layer is used to enable the antenna patch included in the antenna substrate to resonate in a specific resonance frequency band.
- the high dielectric constant dielectric layer applied to a conventional antenna substrate has a structure containing epoxy mold compound (EMC) formed using a mold process.
- EMC epoxy mold compound
- the conventional antenna substrate including epoxy mold compound has the problem of increasing the overall thickness. Additionally, conventional antenna substrates have various process problems in forming the EMC layer.
- the embodiment provides an antenna substrate with a new structure and an antenna device including the same.
- the embodiment provides an antenna substrate capable of slimming the substrate and shifting the resonance frequency, and an antenna device including the same.
- the embodiment provides an antenna substrate capable of reducing the gap between a plurality of antenna patches and an antenna device including the same.
- the antenna substrate according to the embodiment includes an insulating layer; a circuit layer disposed on the insulating layer; and a protective layer disposed on the insulating layer and the circuit layer, wherein the protective layer covers the top surface of the insulating layer, the side surface of the circuit layer, and the top surface of the circuit layer, and has a thickness of between 20 and 40. It has a dielectric constant (Dk) of
- the circuit layer is an antenna portion disposed on the uppermost side of the antenna substrate, and the protective layer is a solder resist disposed on the insulating layer and the antenna portion.
- the protective layer is made of resin; and a filler disposed in the resin and comprised of at least one of TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 .
- the content of the filler in the protective layer satisfies the range of 35 wt% to 85 wt%.
- the circuit layer includes a plurality of antenna units arranged to be spaced apart from each other on the insulating layer, and among the plurality of antenna units, two adjacent antenna units are spaced apart from each other at a distance of 0.5 mm to 1.5 mm.
- the plurality of antenna units are arranged alternately or zigzagly in a diagonal direction on the insulating layer, and the spacing is the diagonal separation distance between two antenna units arranged adjacent to each other.
- the protective layer includes a first region overlapping the circuit layer in the thickness direction; and a second region excluding the first region, and the thickness of the first region of the protective layer satisfies the range of 5 ⁇ m to 25 ⁇ m.
- the top surface of the first region of the protective layer has the same height as the top surface of the second region of the protective layer.
- the top surface of the first region of the protective layer has a step difference from the top surface of the second region of the protective layer.
- the antenna substrate according to the embodiment includes an insulating layer; a circuit layer disposed on the insulating layer; a first protective layer disposed on the insulating layer; and a second protective layer disposed on the circuit layer, wherein the first protective layer has a first dielectric constant, and the second protective layer has a second dielectric constant greater than the first dielectric constant. has a range between 4 and 14 times the first dielectric constant.
- the circuit layer is an antenna portion disposed on the uppermost side of the antenna substrate, and the first and second protective layers are solder resists disposed on the insulating layer or the antenna portion, respectively.
- the first protective layer is disposed on the upper surface of the insulating layer and the circuit layer
- the second protective layer is disposed in a region of the upper surface of the first protective layer that overlaps the circuit layer in the thickness direction. do.
- the width of the second protective layer is greater than the width of the circuit layer.
- the circuit layer includes a plurality of antenna units disposed on the insulating layer
- the second protective layer includes a plurality of patterns that each vertically overlap the plurality of antenna units.
- the first protective layer includes an opening that overlaps the circuit layer in the thickness direction, and the second protective layer is disposed in the opening of the first protective layer in direct contact with the upper surface of the circuit layer.
- the width of the opening of the first protective layer is larger than the width of the circuit layer, and the second protective layer is disposed to surround the top and side surfaces of the circuit layer.
- the upper surface of the first protective layer is located lower than the upper surface of the second protective layer, and at least a portion of the second protective layer is disposed on the upper surface of the first protective layer.
- the first protective layer includes a first filler
- the second protective layer includes a second filler made of a material different from the first filler
- the second filler is TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 .
- the first filler in the first protective layer has a first content
- the second filler in the second protective layer has a second content greater than the first content
- the second content is 35wt. It satisfies the range of % to 85wt%.
- the circuit layer includes a plurality of antenna units arranged alternately or zigzagly in a diagonal direction on the insulating layer, and a gap in the diagonal direction between two antenna units arranged adjacent to each other among the plurality of antenna units. satisfies the range of 0.5mm to 1.5mm.
- the antenna substrate in the embodiment includes an insulating layer, a circuit layer disposed on the insulating layer, and a protective layer.
- the protective layer includes a first area that vertically overlaps the circuit layer and a second area that does not vertically overlap the circuit layer.
- the protective layer has a dielectric constant in the range of 20 to 40.
- the first region of the protective layer may function to shift the resonant frequency of the radiation beam emitted by the circuit layer.
- the second region of the protective layer may function to reduce the gap between the plurality of antenna units constituting the circuit layer.
- the EMC layer included in the antenna substrate of the comparative example can be removed, thereby solving the problem of the EMC layer.
- the size (specifically, planar area) of the circuit layer can be reduced by shifting the resonant frequency using the first region of the protective layer. Accordingly, in the embodiment, the width of the antenna substrate in the horizontal direction can be reduced. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example. Additionally, in the embodiment, miniaturization of an electronic device including an antenna substrate is possible.
- the gap between a plurality of antenna units can be reduced by using the second area of the protective layer. Specifically, in the embodiment, even if the distance between the plurality of antenna units is reduced compared to the comparative example, signal interference that may occur between the antenna units can be prevented. Accordingly, in the embodiment, mutual signal interference of a plurality of antenna units can be prevented, and antenna characteristics and performance can be improved. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example.
- the circuit layer in the embodiment includes a plurality of antenna units disposed on the insulating layer.
- the first and second regions of the protective layer are used to allow the plurality of antenna units to be arranged alternately or zigzagly on the insulating layer. That is, in the embodiment, as a plurality of antenna units are arranged alternately or zigzagly on the insulating layer, the degree of integration of the antenna units can be further improved. Accordingly, in the embodiment, antenna characteristics and performance can be further improved.
- the protective layer in the embodiment includes a first protective layer and a second protective layer.
- the first protective layer is a protective layer with a relatively low dielectric constant.
- the second protective layer is a protective layer with a relatively high high dielectric constant.
- the second protective layer may be disposed in an area that vertically overlaps the circuit layer. Additionally, the first protective layer may be selectively disposed in areas where the second protective layer is not disposed. Accordingly, in the embodiment, antenna characteristics and performance can be maximized while minimizing the placement area of the second protective layer.
- FIG. 1 is a diagram showing an antenna substrate according to a comparative example.
- FIG. 2 is a diagram schematically explaining the arrangement structure of an antenna substrate according to an embodiment.
- Figure 3 is a cross-sectional view showing the antenna substrate of Figure 2.
- Figure 4 is a cross-sectional view showing some layers of the antenna substrate according to the first embodiment.
- FIG. 5 is a plan view showing some layers of the antenna substrate of FIG. 4.
- Figure 6 is a diagram for explaining the characteristics of a protective layer applied to the first embodiment.
- Figure 7 is a diagram for explaining the resonance frequency characteristics of the antenna substrate according to the first embodiment.
- Figure 8 is a diagram for comparing the circuit layer according to the first embodiment and the circuit layer of the comparative example.
- Figure 9 is a diagram showing a modified example of the arrangement structure of the circuit layer according to the first embodiment.
- Figure 10 is a diagram showing an antenna substrate according to a second embodiment.
- Figure 11 is a diagram showing an antenna substrate according to a third embodiment.
- Figure 12 is a diagram showing an antenna substrate according to a fourth embodiment.
- Figure 13 is a diagram showing an antenna substrate according to the fifth embodiment.
- Figure 14 is a diagram showing an antenna substrate according to the sixth embodiment.
- Figure 15 is a diagram showing an antenna substrate according to a seventh embodiment.
- Figure 16 is a diagram showing an antenna substrate according to the eighth embodiment.
- Figure 17 is a diagram showing an antenna substrate according to the ninth embodiment.
- Figure 18 is a diagram showing an antenna substrate according to the tenth embodiment.
- Figure 19 is a diagram showing an antenna device according to the first embodiment.
- Figure 20 is a diagram showing an antenna device according to a second embodiment.
- the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and as long as it is within the scope of the technical idea of the present invention, one or more of the components may be optionally used between the embodiments. It can be used by combining and replacing.
- the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.
- the singular may also include the plural unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and B and C", it is combined with A, B, and C. It can contain one or more of all possible combinations.
- first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and are not limited to the essence, sequence, or order of the component.
- a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also is connected to the other component. It may also include cases where other components are 'connected', 'coupled', or 'connected' by another component between them.
- “above” or “below” refers not only to cases where two components are in direct contact with each other, but also to one This also includes cases where another component described above is formed or placed between two components.
- “top (above) or bottom (bottom)” it can include not only the upward direction but also the downward direction based on one component.
- FIG. 1 is a diagram showing an antenna substrate according to a comparative example.
- Figure 1(a) is a cross-sectional view of an antenna substrate according to a comparative example
- Figure 1(b) is a plan view of a partial configuration of an antenna substrate according to a comparative example.
- the antenna substrate of the comparative example includes an insulating layer 10.
- the antenna substrate of the comparative example includes a circuit layer 20 disposed on the insulating layer 10.
- the circuit layer 20 refers to an antenna patch disposed on the insulating layer 10.
- the insulating layer 10 has a multiple layer structure. Accordingly, the circuit layer 20 is disposed on each insulating layer having the plurality of layer structures. And, the circuit layer 20 in FIG. 1 represents a circuit layer disposed on the uppermost side of the antenna substrate among a plurality of circuit layers.
- the circuit board of the comparative example includes a protective layer 30 disposed on an insulating layer 10.
- the protective layer 30 is solder resist.
- the protective layer 30 of the comparative example has a dielectric constant (Dk) between 3.0 and 5.0.
- the circuit layer 20 is an antenna patch that resonates in a specific resonance frequency band.
- the antenna substrate of the comparative example includes a dielectric layer 40 disposed on the protective layer 30 so that the circuit layer 20 resonates in a specific resonance frequency band.
- the dielectric layer 40 of the comparative example has a dielectric constant (Dk) ranging from 10 to 20.
- the dielectric layer 40 is used to enable the radiation beam to be emitted by the circuit layer 20 in the target resonance frequency band.
- the dielectric layer 40 of the comparative example is an epoxy mold compound layer (EMC layer) formed using a mold process.
- EMC layer epoxy mold compound layer
- the EMC layer in the comparative example has a thickness of 300 ⁇ m or more.
- the antenna substrate of the comparative example has a problem in that the overall thickness increases by the thickness of the dielectric layer 40.
- the thickness of the antenna device to which the antenna substrate of the comparative example is applied increases, thereby increasing the thickness of the electronic device corresponding to the antenna device.
- the dielectric layer 40 having a high dielectric constant is more expensive than the dielectric layer having a lower dielectric constant. Accordingly, in the antenna substrate of the comparative example, the thickness of the dielectric layer 40 is relatively thick, and thus the manufacturing cost of the antenna substrate increases.
- a plurality of circuit layers 20 in the comparative example may be arranged on the insulating layer 10, spaced apart in the longitudinal or width direction.
- the circuit layer 20 includes a first antenna patch 20-1 and a second antenna patch 20-2 that are spaced apart from each other.
- the protective layer 30 is disposed between the first antenna patch 20-1 and the second antenna patch 20-2 in the comparative example.
- the dielectric layer 40 in the comparative example does not overlap the first antenna patch 20-1 and the second antenna patch 20-2 in the horizontal direction.
- the first antenna patch 20-1 and the second antenna patch 20-2 are spaced apart by a certain distance d1.
- the first antenna patch 20-1 and the second antenna patch 20-2 are spaced apart from each other with a gap d1 of 1.7 mm or more. That is, in the comparative example, only the protective layer 30 with a relatively low dielectric constant is disposed between the first antenna patch 20-1 and the second antenna patch 20-2.
- the first antenna patch (20-1) and the second antenna patch (20-2) are arranged with a gap of 1.7 mm or more, and accordingly, the first antenna patch (20-1) and the second antenna patch (20-2) are arranged at a distance of 1.7 mm or more.
- the insulating layer 40 having a high dielectric constant instead of the dielectric layer 40 having a high dielectric constant, one of the insulating layers having a plurality of layer structures is used as a prepreg having a high dielectric constant.
- the insulating layer is formed of propreg having a high dielectric constant, there is a problem in that the bending characteristics are deteriorated.
- the antenna substrate of the comparative example in the process of laminating a plurality of insulating layers in the manufacturing process of the antenna substrate, the bending characteristics of the substrate are deteriorated due to the dielectric constant difference between the high dielectric constant prepreg and other insulating layers excluding it. there is a problem.
- the thickness of the antenna package substrate is decreasing in order to maintain the size of the antenna device (eg, mobile terminal) while increasing the battery size.
- the thickness of the antenna substrate is reduced compared to the comparative example, and the area where the antenna patch is arranged on the antenna substrate can be reduced.
- FIG. 2 is a diagram schematically illustrating the arrangement structure of the antenna substrate according to the embodiment
- FIG. 3 is a cross-sectional view showing the antenna substrate of FIG. 2
- FIG. 4 is a partial layer of the antenna substrate according to the first embodiment. It is a cross-sectional view
- FIG. 5 is a plan view showing some layers of the antenna substrate of FIG. 4
- FIG. 6 is a view for explaining the characteristics of the protective layer applied to the first embodiment
- FIG. 7 is a view showing the first embodiment.
- This is a drawing for explaining the resonance frequency characteristics of the antenna substrate according to the present invention.
- FIG. 8 is a drawing for comparing the circuit layer according to the first embodiment and the circuit layer of the comparative example
- FIG. 9 is the arrangement of the circuit layer according to the first embodiment. This is a drawing showing a modified example of the structure.
- the antenna substrate of the embodiment may include an insulating layer 110, a circuit layer 120, a penetrating electrode 130, and a protective layer 140.
- the insulating layer 110 may be provided to feed and support the antenna substrate.
- the insulating layer 110 may have a flat structure.
- This insulating layer 110 may be composed of a single layer, or alternatively, may include a plurality of layers in which multiple layers are stacked.
- the insulating layer 110 may include a first insulating layer 111, a second insulating layer 112, and a third insulating layer 113.
- the embodiment is not limited to this.
- the insulating layer 110 may have a number of layers of 2 or less, or alternatively, it may have a number of layers of 4 or more.
- the insulating layer 110 may include prepreg (PPG).
- the prepreg can be formed by impregnating an epoxy resin or the like into a fiber layer in the form of a fabric sheet, such as a glass fabric woven with glass fiber yarn, and then performing heat compression.
- the embodiment is not limited to this, and the prepreg constituting the insulating layer 110 may include a fiber layer in the form of a fabric sheet woven with carbon fiber thread.
- the insulating layer 110 may be rigid or flexible.
- Each insulating layer constituting the insulating layer 110 may have a thickness ranging from 10 ⁇ m to 60 ⁇ m. Preferably, each insulating layer constituting the insulating layer 110 may have a thickness ranging from 12 ⁇ m to 50 ⁇ m. More preferably, each insulating layer constituting the insulating layer 110 may have a thickness of 15 ⁇ m to 40 ⁇ m.
- each insulating layer constituting the insulating layer 110 is less than 10 ⁇ m, the circuit layer included in the antenna substrate may not be stably protected. If the thickness of each insulating layer constituting the insulating layer 110 exceeds 60 ⁇ m, the thickness of the antenna substrate, antenna device, and electronic device may increase. If the thickness of each insulating layer constituting the insulating layer 110 exceeds 60 ⁇ m, the thickness of the circuit layer and the thickness of the through electrode may increase correspondingly. And when the thickness of the circuit layer and the thickness of the through electrode increases, signal transmission loss may increase.
- a circuit layer 120 may be disposed on the surface of the insulating layer 110.
- the circuit layer 120 may refer to a circuit layer that functions as an antenna.
- the circuit layer 120 may refer to an antenna pattern layer.
- the circuit layer 120 may represent an antenna patch.
- the circuit layer 120 may have a plurality of layers.
- the circuit layer 120 includes a first circuit layer 121 disposed on the first insulating layer 111, a second circuit layer 122 disposed on the second insulating layer 112, and a second circuit layer 122 disposed on the first insulating layer 111. 3 It may include a third circuit layer 123 disposed on the insulating layer 113.
- the circuit layer 120 includes first to third circuit layers 121, 122, and 123, it is not limited thereto.
- the circuit layer 120 may include a ground layer (not shown) for grounding, a power supply layer (not shown) for power feeding, and a radiation layer (not shown) for signal radiation.
- a ground layer for grounding
- a power supply layer for power feeding
- a radiation layer for signal radiation.
- the ground layer, power supply layer, and radiation layer may each be disposed on different insulating layers.
- the embodiment is not limited to this, and the circuit layer corresponding to the antenna unit among the circuit layers 120 of the embodiment is disposed on the surface of one of the plurality of insulating layers, and is disposed on the surface of at least one other insulating layer. It may not be placed in .
- the circuit layer 120 is disposed on the upper or lower surface of any one of the first to third insulating layers, It may not be disposed on the top or bottom surface of at least one other insulating layer.
- the circuit layer 120 of the embodiment may be provided on an antenna substrate for signal transmission and reception.
- the circuit layer 120 can transmit and receive signals in a predetermined resonant frequency band.
- the circuit layer 120 may operate in a predetermined resonant frequency band to transmit and receive electromagnetic waves.
- the circuit layer 120 can be operated by power supplied from a power supply unit (not shown).
- the circuit layer 120 may resonate in at least one resonance frequency band.
- the circuit layer 120 may be a resonant antenna that resonates in a first frequency band of 24.03 GHz to 25.81 GHz or a second frequency band of 27.07 GHz to 28.80 GHz.
- the circuit layer 120 may be a dual resonance antenna that resonates in different resonance frequency bands.
- the circuit layer 120 may be a dual resonance antenna that resonates in a first frequency band of 24.03 GHz to 25.81 GHz and a second frequency band of 27.07 GHz to 28.80 GHz.
- the circuit layer 120 in FIG. 4 may refer to an antenna patch disposed on the outermost side (specifically, the uppermost or lowermost side) of the antenna substrate among a plurality of circuit layers.
- the circuit layers 120 of the embodiment may be respectively disposed on different insulating layers, or alternatively, may be disposed on only one insulating layer.
- the arrangement structure of the circuit layer 120 may be determined based on the resonance frequency band.
- the circuit layer 120 may be formed on the insulating layer 110 to have a thickness of 10 ⁇ m to 25 ⁇ m.
- the circuit layer 120 may be formed on the insulating layer 110 to have a thickness of 12 ⁇ m to 23 ⁇ m. More preferably, the circuit layer 120 may be formed on the insulating layer 110 to have a thickness of 15 ⁇ m to 20 ⁇ m.
- the circuit layer 120 may include a conductive material.
- the circuit layer 120 is at least one selected from gold (Au), silver (Ag), platinum (Pt), titanium (Ti), tin (Sn), copper (Cu), and zinc (Zn). It may contain metallic substances.
- the circuit layer 120 may be formed of copper (Cu), which has high electrical conductivity and is relatively inexpensive.
- the circuit layer 120 can be manufactured using typical circuit board manufacturing processes such as the additive process, subtractive process, MSAP (Modified Semi Additive Process), and SAP (Semi Additive Process) methods. And detailed description is omitted here.
- the antenna substrate may include a penetrating electrode 130.
- the penetrating electrode 130 may penetrate the insulating layer 110.
- the through electrode 130 may electrically connect circuit layers arranged in different layers.
- the through electrode 130 includes a first through electrode (not shown) penetrating the first insulating layer 111, a second through electrode 131 penetrating the second insulating layer 112, and a third insulating layer 113. ) may include a third penetrating electrode 132 penetrating.
- a protective layer 140 may be disposed on the insulating layer 110 in the first embodiment.
- the protective layer 140 may be disposed on the insulating layer disposed on the uppermost or lowermost side among the plurality of insulating layers.
- the protective layer 140 may be disposed on the circuit layer disposed on the insulating layer disposed on the uppermost or lowermost side.
- the protective layer 140 may be solder resist.
- the planar area of the protective layer 140 in the first embodiment may be the same as or smaller than the planar area of the insulating layer 110.
- the entire area of the protective layer 140 in the first embodiment may overlap the insulating layer 110 in the thickness direction (z-axis).
- the entire area of the insulating layer 110 in the first embodiment may overlap the protective layer 140 in the thickness direction (z-axis direction).
- the protective layer 140 may be divided into a plurality of regions.
- the protective layer 140 may include a first region R1 that overlaps the circuit layer 120 in the thickness direction (z-axis direction). That is, the protective layer 140 may include a first region R1 whose lower surface is in direct contact with the upper surface of the circuit layer 120.
- the circuit layer 120 may be arranged to be spaced apart in the first direction (x-axis direction) or the second direction (y-axis direction) on the insulating layer 110.
- the circuit layer 120 includes a first antenna unit 120-1 and a second antenna unit 120-2 disposed on the insulating layer 110 to be spaced apart from each other.
- the planar shape of the first antenna unit 120-1 and the second antenna unit 120-2 corresponding to the circuit layer 120 is shown as having a square shape, but it is not limited thereto.
- the planar shapes of the first antenna unit 120-1 and the second antenna unit 120-2 are triangular, circular, oval, polygonal, star, fan-shaped, cross-shaped, and X-shaped. It may have various shapes, such as a shape, a diamond shape, or a trapezoid shape.
- first region R1 of the protective layer 140 overlaps the first antenna unit 120-1 and the second antenna unit 120-2 in the thickness direction (z-axis direction), respectively. You can.
- the protective layer 140 may include a second region R2 that does not overlap the circuit layer 120 in the thickness direction (z-axis direction). That is, the protective layer 140 may include a second region R2 whose lower surface does not contact the circuit layer 120 .
- the protective layer 140 may include a second region R2 whose lower surface directly contacts the upper surface of the insulating layer 110 .
- the second region R2 of the protective layer 140 is the upper surface of the insulating layer 110 on one side of the first antenna unit 120-1, and the second antenna unit 120-1. 2), the upper surface of the insulating layer 110 in the other area, and the insulating layer 110 in the area between the other side of the first antenna unit 120-1 and one side of the second antenna unit 120-2.
- the second region R2 of the protective layer 140 is in contact with the side of at least one of the first antenna unit 120-1 and the second antenna unit 120-2 while the insulating layer It may be placed on the upper surface of (110).
- the protective layer 140 of the first embodiment may have a relatively high dielectric constant.
- the protective layer 140 may have a higher dielectric constant than the protective layer 30 in the comparative example.
- the dielectric constant (Dk) of the protective layer 140 may satisfy a range between 20 and 40.
- the dielectric constant (Dk) of the protective layer 140 may satisfy a range between 20.5 and 40. More preferably, the dielectric constant (Dk) of the protective layer 140 may satisfy a range between 21 and 40.
- the dielectric constant (Dk) of the protective layer 140 is less than 20, the effect of reducing the gap between the plurality of antenna units in the embodiment may be insignificant.
- the dielectric constant (Dk) of the protective layer 140 is less than 20, the effect of reducing the size (eg, planar area) of the plurality of antenna units in the embodiment may be insignificant.
- the dielectric constant (Dk) of the protective layer 140 is less than 20, there is a limit to reducing the size (thickness in the z-axis direction, width in the x-axis direction, and length in the y-axis direction) of the antenna substrate. .
- the dielectric constant (Dk) of the protective layer 140 is greater than 40, a problem may occur in which the rigidity of the antenna substrate is reduced. Additionally, if the dielectric constant (Dk) of the protective layer 140 is greater than 40, there is a problem that the manufacturing cost of the antenna substrate increases due to the use of a relatively expensive protective layer.
- the protective layer 140 in the embodiment may have a higher dielectric constant than the dielectric constant of the protective layer 30 in the comparative example.
- the dielectric constant (Dk) of the protective layer 140 of the embodiment may satisfy a range between 4 and 14 times the dielectric constant of the protective layer 30 of the comparative example.
- the dielectric constant (Dk) of the protective layer 140 of the embodiment may satisfy a range of 4.1 to 14 times the dielectric constant of the protective layer 30 of the comparative example.
- the dielectric constant (Dk) of the protective layer 140 of the embodiment may satisfy a range of 4.2 to 14 times the dielectric constant of the protective layer 30 of the comparative example.
- the content of the filler included in the protective layer 140 of the embodiment may be greater than the content of the filler included in the protective layer 30 of the comparative example.
- the protective layer 140 of the embodiment may include resin and filler dispersed in the resin.
- Resin applied to the protective layer 140 may have various forms such as thermosetting resin, photosensitive resin, and ink.
- the filler disposed in the resin of the protective layer 140 may include a material different from the filler disposed in the resin of the protective layer 30 in the comparative example.
- the filler included in the protective layer 30 of the comparative example may include SiO 2 .
- the protective layer 140 of the embodiment may include a filler containing at least one selected from the group consisting of TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 .
- the dielectric constants of TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 are greater than those of SiO 2
- the dielectric constant of the protective layer 140 of the example may be greater than that of the protective layer 30 of the comparative example.
- the protective layer 140 of the embodiment may include at least one filler selected from TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 in the resin, and SiO 2 may be additionally included. there is.
- the protective layer 140 of the embodiment is TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 It may include only one or more selected from among.
- the protective layer 140 of the embodiment is TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 At least one selected from among SiO 2 may be additionally included.
- thermogravimetric analysis TGA
- the protective layer 30 (SR #1) of the comparative example contains 17.48 wt% of filler.
- the protective layer 30 (SR #1) of the comparative example had a lower dielectric constant compared to the protective layer of the example.
- the protective layer 30 of the comparative example generally includes a filler content of 34.67 wt% or less, and thus has a relatively low dielectric constant.
- thermogravimetric analysis TGA
- the protective layer 140 (SR #2) of the example contained 65.33 wt% of filler.
- the filler content of the protective layer (140, SR #2) was higher than that of the comparative example, and as a result, it had a higher dielectric constant than the protective layer (30, SR #1) of the comparative example.
- a filler content of 82.52 wt% is included in the protective layer 140, so that the protective layer 140 has a dielectric constant of 30 or more.
- the protective layer 140 of the embodiment may have a higher dielectric constant compared to the protective layer of the comparative example.
- the protective layer 140 of the embodiment has a higher dielectric constant than the protective layer 30 of the comparative example.
- the protective layer 140 of the embodiment includes TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 having a relatively high dielectric constant. This may be due to the inclusion of a filler selected from among. Additionally, this may be due to the fact that the content of the filler included in the protective layer 140 of the example is higher than the content of the filler included in the protective layer 30 of the comparative example.
- the protective layer 140 of the embodiment includes filler in an amount ranging from 35 wt% to 85 wt%.
- the protective layer 140 of the embodiment includes filler in an amount ranging from 36 wt% to 84 wt%. More preferably, the protective layer 140 of the embodiment includes filler in an amount ranging from 37 wt% to 83 wt%.
- the filler content in the protective layer 140 is less than 35 wt%, a problem may occur in which the protective layer 140 does not have a required dielectric constant. If the content of the filler in the protective layer 140 exceeds 84wt%, the product price may increase or the rigidity of the antenna substrate may become weak.
- the protective layer 140 of the above embodiment is TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3
- the filler may have a dielectric constant (Dk) ranging from 20 to 40 and a dielectric loss (Df) ranging from 0.015 to 0.05.
- the average size of the filler included in the protective layer 140 in the embodiment may be different from the average size of the filler included in the protective layer 30 in the comparative example.
- the average size of the filler included in the protective layer 30 of the comparative example may exceed 5 ⁇ m.
- the average size of the filler included in the protective layer 140 of the embodiment may be 4 ⁇ m or less or 3 ⁇ m or less.
- TiO 2 , Al 2 O 3 , BaTiO 3 and CaTiO 3 It includes a protective layer 140 including at least one of the filler content of 35 wt% to 85 wt%. And, the protective layer 140 has a dielectric constant (Dk) in the range of 20 to 40. Additionally, the protective layer 140 includes a first region R1 that overlaps the circuit layer 120 in the thickness direction (z-axis direction) as shown in the figure.
- Dk dielectric constant
- the radiation beam emitted from the circuit layer 120 may pass through the first region R1 of the protective layer 140 having a high dielectric constant. Accordingly, in the embodiment, the radiation beam from the circuit layer 120 passes through the first region R1 of the protective layer 140, so that the resonance frequency band formed by the circuit layer 120 is desired. Allows shifting to the target frequency band.
- the planar area of the circuit layer 120 can be reduced compared to the comparative example.
- the planar area of the circuit layer 120 increases in proportion to the resonance frequency of the circuit layer 120.
- the embodiment can shift the resonance frequency down by about 1200 MHz compared to the comparative example, and correspondingly, the planar area of the circuit layer 120 can be reduced compared to the comparative example.
- the width W1 of the circuit layer 120 of the embodiment may be smaller than the width w1 of the circuit layer 20 of the comparative example.
- the width W1 of the circuit layer 120 of the embodiment may range from 50% to 90% of the width w1 of the circuit layer 20 of the comparative example.
- the width W1 of the circuit layer 120 of the embodiment may range from 50% to 87% of the width w1 of the circuit layer 20 of the comparative example.
- the width W1 of the circuit layer 120 of the embodiment may range from 50% to 85% of the width w1 of the circuit layer 20 of the comparative example.
- the area occupied by the circuit layer 120 on the antenna substrate can be reduced, and thus the width of the antenna substrate in the horizontal direction can be reduced.
- the number of circuit layers 120 arranged on the antenna substrate having the same area as the comparative example may be increased.
- the number of circuit layers arranged in the same area may be increased compared to the comparative example.
- the degree of integration of the circuit layer 120 may be improved.
- the first region R1 of the protective layer 140 in the embodiment functions to collect the radiation beam emitted from the circuit layer 120 as described above.
- the first region R1 of the protective layer 140 functions to shift the resonance frequency of the circuit layer 120.
- the protective layer 140 of the embodiment further includes a second region (R2) other than the first region (R1).
- the second region R2 is disposed between a plurality of circuit layers. Specifically, a first antenna unit 120-1 and a second antenna unit 120-2 spaced apart from each other are disposed on the insulating layer 110. In addition, the second area R2 of the protective layer 140 is located in the area between the first antenna unit 120-1 and the second antenna unit 120-2 on the upper surface of the insulating layer 110. It is placed. For example, the second region R2 of the protective layer 140 is the other side of the first antenna unit 120-1 adjacent to the second antenna unit 120-2, and the first antenna unit ( It is disposed between 120-1) and one side of the adjacent second antenna unit 120-2.
- the second region (R2) of the protective layer 140 has a dielectric constant (Dk) in the range of 20 to 40, the same as the first region (R1). Accordingly, in the embodiment, the second region R2 of the protective layer 140 has a high dielectric constant, thereby reducing the gap between the first antenna unit 120-1 and the second antenna unit 120-2. (D1) can be reduced.
- the first antenna unit 120-1 and the second antenna unit 120-2 must be spaced apart at a certain distance in consideration of signal interference between them.
- the plurality of antenna units eg, antenna patches
- the gap D1 between the first antenna unit 120-1 and the second antenna unit 120-2 is reduced by the second region R2 of the protective layer 140 compared to the comparative example. It can be reduced.
- the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may be 1.5 mm or less.
- the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may be 1.2 mm or less.
- the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may be 1.0 mm or less.
- the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may range from 0.5 mm to 1.5 mm.
- the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may range from 0.6 mm to 1.5 mm. More preferably, the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 in the embodiment may range from 0.8 mm to 1.5 mm.
- the first antenna unit 120-1 and the second antenna unit 120-2 Interference may occur. For example, if the distance D1 between the first antenna unit 120-1 and the second antenna unit 120-2 is less than 0.5 mm, the dielectric constant of the protective layer 140 is adjusted to resolve the interference. It must be above 50, which can cause problems.
- the integration degree of the circuit layer 120 may decrease. For example, if the gap D1 between the first antenna unit 120-1 and the second antenna unit 120-2 exceeds 1.5 mm, the area where the circuit layer 120 is disposed may increase. This can increase the width of the antenna substrate in the horizontal direction.
- the protective layer 140 of the embodiment has a certain thickness and may be disposed on the insulating layer 110 and the circuit layer 120.
- the second region R2 of the protective layer 140 may have a first thickness T1.
- the first thickness T1 of the second region R2 may be determined based on the thickness of the circuit layer 120.
- the first thickness T1 of the second region R2 may be greater than the thickness of the circuit layer 120.
- the thickness of the circuit layer 120 may range from 10 ⁇ m to 25 ⁇ m as described above.
- the first thickness T1 of the second region R2 of the protective layer 140 may range from 15 ⁇ m to 40 ⁇ m.
- the first thickness T1 of the second region R2 of the protective layer 140 may range from 18 ⁇ m to 38 ⁇ m.
- the first thickness T1 of the second region R2 of the protective layer 140 may range from 20 ⁇ m to 35 ⁇ m.
- the second thickness T2 of the first region R1 of the protective layer 140 may satisfy the range of 5 ⁇ m to 25 ⁇ m.
- the second thickness T2 of the first region R1 of the protective layer 140 may satisfy the range of 8 ⁇ m to 23 ⁇ m.
- the second thickness T2 of the first region R2 of the protective layer 140 may satisfy the range of 10 ⁇ m to 20 ⁇ m.
- the second thickness T2 of the first region R1 of the protective layer 140 is less than 5 ⁇ m, the resonance frequency of the circuit layer 120 due to the first region R1 of the protective layer 140 The degree of shift may be slight. If the second thickness T2 of the first region R1 of the protective layer 140 exceeds 25 ⁇ m, the overall thickness of the antenna substrate may increase by the thickness of the protective layer 140. Additionally, if the second thickness T2 of the first region R1 of the protective layer 140 exceeds 25 ⁇ m, the product price may increase.
- the top surface of the first region (R1) and the top surface of the second region (R2) of the protective layer 140 are shown as being disposed on the same plane, but this is not limited to this.
- the upper surfaces of the first region R1 and the second region R2 of the protective layer 140 may have a step.
- the top surface of the first region R1 of the protective layer 140 may be positioned higher than the top surface of the second region R2.
- the top surface of the second region R2 of the protective layer 140 may be located on the same plane as the top surface of the circuit layer 120.
- the top surface of the second region (R2) of the protective layer 140 is located higher than the top surface of the circuit layer 120 and lower than the top surface of the first region (R1) of the protective layer 140. can be located That is, the second region R2 of the protective layer 140 functions to prevent signal interference between the plurality of antenna units of the circuit layer 120. Accordingly, when the height of the second region R2 of the protective layer 140 is not lower than the height of the circuit layer 120, the signal interference prevention function can be normally performed. Therefore, in the embodiment, the height of the second region R2 of the protective layer 140 is the same as or slightly higher than the height of the circuit layer 120. Accordingly, in the embodiment, the placement area of the protective layer 140 can be reduced by a decrease in the height of the second region R2, and the product cost can be reduced accordingly.
- the antenna substrate in the first embodiment includes an insulating layer, a circuit layer disposed on the insulating layer, and a protective layer.
- the protective layer includes a first area that vertically overlaps the circuit layer and a second area that does not vertically overlap the circuit layer.
- the protective layer has a dielectric constant in the range of 20 to 40.
- the first region of the protective layer may function to shift the resonant frequency of the radiation beam emitted by the circuit layer.
- the second region of the protective layer may function to reduce the gap between the plurality of antenna units constituting the circuit layer.
- the EMC layer included in the antenna substrate of the comparative example can be removed, thereby solving the problem of the EMC layer.
- the size (specifically, planar area) of the circuit layer can be reduced by shifting the resonant frequency using the first region of the protective layer. Accordingly, in the embodiment, the width of the antenna substrate in the horizontal direction can be reduced. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example. Additionally, in the embodiment, miniaturization of an electronic device including an antenna substrate is possible.
- the gap between a plurality of antenna units can be reduced by using the second area of the protective layer. Specifically, in the embodiment, even if the distance between the plurality of antenna units is reduced compared to the comparative example, signal interference that may occur between the antenna units can be prevented. Accordingly, in the embodiment, mutual signal interference of a plurality of antenna units can be prevented, and antenna characteristics and performance can be improved. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example.
- the first antenna unit 120-1 and the second antenna unit 120 of the circuit layer 120 are formed using the first area R1 and the second area R2 of the protective layer 140. -2)
- the size and spacing (D1) can be reduced. Accordingly, in the embodiment, a plurality of antenna units may be arranged in a zigzag manner on the insulating layer 110.
- the circuit layer 120 of the embodiment includes a plurality of antenna units.
- the plurality of antenna units includes a plurality of first groups 120a arranged in a first direction (x-axis direction) on the insulating layer 110.
- the plurality of antenna units are spaced apart from each other in the first direction (x-axis direction) at positions spaced apart from the plurality of first groups 120a in the second direction (y-axis direction) on the insulating layer 110. It includes a second group 120b.
- the first group 120a and the second group 120b may be arranged alternately or zigzag.
- one antenna unit included in the first group 120a is moved in a diagonal direction (for example, a direction between the first direction and the second direction) from the adjacent antenna unit included in the second group 120b. ) can be spaced apart.
- one antenna unit included in the second group 120b is moved in a diagonal direction (for example, a direction between the first direction and the second direction) from the adjacent antenna unit included in the first group 120a. ) can be spaced apart.
- a specific antenna unit included in the first group 120a may be spaced apart in the second direction in an area between two antenna units of the second group 120b disposed adjacent thereto.
- a specific antenna unit included in the second group 120b may be spaced apart in the second direction in an area between two antenna units of the first group 120a disposed adjacent thereto.
- the first antenna unit included in the first group 120a may be placed adjacent to the second antenna unit included in the second group 120b.
- the first antenna unit of the first group 120a and the second antenna unit of the second group 120b may be spaced apart from each other in the diagonal direction on the insulating layer 110.
- the first antenna unit of the first group 120a and the second antenna unit of the second group 120b may be arranged to be spaced apart from each other by the distance D1 in the diagonal direction on the insulating layer 110. .
- the degree of integration of the antenna units can be further improved. Accordingly, in the embodiment, antenna characteristics and performance can be further improved.
- each antenna unit of the first group 120a and the second group 120b is shown as having a square shape, but this is not limited, and the shape of the antenna unit may be modified into various shapes.
- Figure 10 is a diagram showing an antenna substrate according to a second embodiment.
- the antenna substrate includes an insulating layer 210, a circuit layer 220, and a protective layer.
- the insulating layer 210 and the circuit layer 220 may be substantially the same as the insulating layer and circuit layer in the first embodiment. Accordingly, detailed description of the insulating layer 210 and circuit layer 220 will be omitted.
- the circuit layer 220 may include a first antenna unit 220-1 and a second antenna unit 220-2 spaced apart from each other on the insulating layer 210.
- the antenna substrate of the second embodiment may be different from the first embodiment in the structure of the protective layer disposed on the insulating layer 210.
- the antenna substrate of the second embodiment may have a plurality of protective layers disposed on the insulating layer 210.
- the antenna substrate may include a first protective layer 241 formed on the insulating layer 210 and the circuit layer 220. Additionally, the antenna substrate may include a second protective layer 242 disposed on the first protective layer 241. At this time, the second protective layer 242 may be partially disposed on the first protective layer 241.
- the first protective layer 241 may be disposed to cover both surfaces of the insulating layer 210 and the circuit layer 220.
- the circuit layer 220 may include a plurality of antenna units 220-1 and 220-2 spaced apart from each other.
- the first protective layer 241 may be disposed to cover both the upper surfaces of the plurality of antenna units spaced apart from each other and the upper surfaces of the insulating layer.
- the second protective layer 242 may be disposed at regular intervals on the first protective layer 241 or the circuit layer 220. That is, the first protective layer 241 is formed in an area that overlaps the circuit layer 220 in the vertical direction. At this time, the circuit layer 220 includes a plurality of antenna units spaced apart from each other on the insulating layer 210. Accordingly, the second protective layer 242 may be formed in a certain pattern at regular intervals on the first protective layer 241 or the circuit layer 220, corresponding to the circuit layer 220.
- the first protective layer 241 and the second protective layer 242 may have different areas.
- the area of the first protective layer 241 may be larger than the area of the second protective layer 242.
- the second protective layer 242 may not be formed on at least a portion of the upper surface of the first protective layer 241.
- the second protective layer 242 may be selectively disposed only in an area of the upper surface of the first protective layer 241 that overlaps the circuit layer 220 in the vertical direction.
- the width W2 of the second protective layer 242 may be larger than the width W1 of the circuit layer 220. Accordingly, the second protective layer 242 may include a first part that overlaps the circuit layer 220 in the vertical direction and a second part other than the first part that does not overlap the circuit layer 220. there is. However, the embodiment is not limited to this, and the second protective layer 242 may have the same width as the circuit layer 220, and the entire area may overlap the circuit layer 220 in the vertical direction. There will be.
- the first protective layer 241 may be formed on the insulating layer 210 to have a first thickness T1a. Additionally, the second protective layer 242 may be formed on the first protective layer 241 to have a second thickness T2a.
- the second thickness T2a of the second protective layer 242 may satisfy the range of 5 ⁇ m to 25 ⁇ m.
- the second thickness T2a of the second protective layer 242 may satisfy the range of 8 ⁇ m to 23 ⁇ m.
- the second thickness T2a of the second protective layer 242 may satisfy the range of 10 ⁇ m to 20 ⁇ m.
- the degree of shift in the resonance frequency of the circuit layer 220 caused by the second protective layer 242 may be insignificant. If the second thickness T2a of the second protective layer 242 exceeds 25 ⁇ m, the overall thickness of the antenna substrate may increase by the thickness of the second protective layer 242. Additionally, if the second thickness T2a of the second protective layer 242 exceeds 25 ⁇ m, the unit price of the product may increase.
- the first thickness T1a of the first protective layer 241 may be greater than the thickness of the circuit layer 220.
- the first thickness T1a of the first protective layer 241 may be 10.2 ⁇ m to 28 ⁇ m.
- the first thickness T1a of the first protective layer 241 may be 12.2 ⁇ m to 26 ⁇ m. More preferably, the first thickness T1a of the first protective layer 241 may be 15.2 ⁇ m to 23 ⁇ m.
- the first thickness T1a of the first protective layer 241 may be the thickness from the top surface of the insulating layer 210 to the top surface of the first protective layer 241 . More specifically, the first thickness T1a of the first protective layer 241 may be the thickness of the thickest portion of the entire area of the first protective layer 241. Likewise, the second thickness T2a of the second protective layer 242 may be the thickness of the thickest portion of the entire area of the second protective layer 242.
- the first thickness T1a of the first protective layer 241 is greater than the thickness of the circuit layer 220, and accordingly, the first protective layer 241 has a certain thickness on the circuit layer 220.
- the first protective layer 241 may also be formed between the second protective layer 242 and the circuit layer 220. That is, the first protective layer 241 may be disposed between the circuit layer 220 and the second protective layer 242 to have a certain thickness.
- the third thickness T3a of the first protective layer 241 between the circuit layer 220 and the second protective layer 242 may be 0.2 ⁇ m to 3 ⁇ m.
- the third thickness T3a is greater than 3 ⁇ m, the frequency shift effect caused by the second protective layer 242 may be insufficient.
- the third thickness T3a is greater than 3 ⁇ m, the overall thickness of the antenna substrate may increase due to an increase in the thickness of the first protective layer 241.
- the thickness of the first protective layer 241 refers to the thickness from the lower surface of the circuit layer 220 to the upper surface of the first protective layer 241.
- the thickness of the first protective layer 241 may include the circuit layer 220 and the thickness of the first protective layer 241 on the circuit layer 220.
- the portion of the first protective layer 241 formed between the circuit layers 220 may be located lower than the circuit layer 220 .
- the first protective layer 241 in the modified example of FIG. 10 includes a first region disposed on the circuit layer 220 and a second region disposed on the insulating layer 210 between the circuit layer 220. Can include areas.
- the thickness of the first protective layer 241 may be the sum of the thickness of the circuit layer 220 and the thickness of the first region of the first protective layer 241.
- the thickness of the second region of the first protective layer 241 may be thinner than the thickness of the circuit layer 220.
- first protective layer 241 and the second protective layer 242 may have different dielectric constants. Specifically, the dielectric constant of the second protective layer 242 may be greater than the dielectric constant of the first protective layer 241.
- the first protective layer 241 may correspond to the protective layer 30 described in the comparative example.
- the first protective layer 241 may have a dielectric constant (Dk) of 3 to 5.
- the second protective layer 242 may have a higher dielectric constant than the first protective layer 241. Specifically, the second protective layer 242 may correspond to the protective layer 140 described in the first embodiment.
- the antenna substrate includes a first protective layer and a second protective layer. Additionally, the first protective layer may be disposed in an area of the antenna substrate that does not vertically overlap the circuit layer. Additionally, the second protective layer may be disposed in an area that vertically overlaps the circuit layer. According to the second embodiment, the resonance frequency of the circuit layer can be efficiently shifted while minimizing the placement area of the second protective layer.
- Figure 11 is a diagram showing an antenna substrate according to a third embodiment.
- the antenna substrate includes an insulating layer 310, a circuit layer 320, and a protective layer.
- the insulating layer 310 and the circuit layer 320 may be substantially the same as the insulating layer and circuit layer in the second embodiment. Accordingly, detailed description of the insulating layer 310 and circuit layer 320 will be omitted.
- the circuit layer 320 may include a first antenna unit 320-1 and a second antenna unit 320-2 spaced apart from each other on the insulating layer 310.
- the antenna substrate of the third embodiment may have a plurality of protective layers disposed on the insulating layer 310.
- the antenna substrate may include a first protective layer 341 formed on the insulating layer 310 and the circuit layer 320. Additionally, the antenna substrate may include a second protective layer 342 disposed on the first protective layer 341. At this time, the second protective layer 342 may be partially disposed on the first protective layer 341.
- the first protective layer 341 may be disposed to cover the entire surface of the insulating layer 310.
- the circuit layer 320 may include a plurality of antenna units 320-1 and 320-2 spaced apart from each other.
- the first protective layer 341 may be disposed on the upper surface of the insulating layer in the area between the plurality of antenna units spaced apart from each other.
- the second protective layer 342 may be disposed at regular intervals on the first protective layer 341 or the circuit layer 320. That is, the first protective layer 341 is formed in an area that overlaps the circuit layer 320 in the vertical direction. At this time, the circuit layer 320 includes a plurality of antenna units spaced apart from each other on the insulating layer 310. Accordingly, the second protective layer 342 may be formed in a certain pattern at regular intervals on the first protective layer 341 or the circuit layer 320, corresponding to the circuit layer 320.
- the second protective layer 342 may be selectively disposed on an area of the upper surface of the first protective layer 341 that overlaps the circuit layer 320 in the vertical direction. Additionally, the second protective layer 342 may be selectively disposed on the upper surface of the first protective layer 341.
- the width W2 of the second protective layer 342 may be greater than the width W1 of the circuit layer 320. Accordingly, the second protective layer 342 may include a first part in direct contact with the upper surface of the circuit layer 320 and a second part in direct contact with the upper surface of the first protective layer 341. there is.
- the first protective layer 341 may be formed on the insulating layer 310 to have a first thickness T1b. Additionally, the second protective layer 342 may be formed on the first protective layer 341 to have a second thickness T2b.
- the second thickness T2b of the second protective layer 342 may satisfy the range of 5 ⁇ m to 25 ⁇ m.
- the second thickness T2b of the second protective layer 342 may satisfy the range of 8 ⁇ m to 23 ⁇ m.
- the second thickness T2b of the second protective layer 342 may satisfy the range of 10 ⁇ m to 20 ⁇ m.
- the first thickness T1b of the first protective layer 341 may be the same as the thickness of the circuit layer 320.
- the first thickness T1b of the first protective layer 341 may be 10 ⁇ m to 25 ⁇ m.
- the first thickness T1b of the first protective layer 341 may be 12 ⁇ m to 23 ⁇ m. More preferably, the first thickness T1b of the first protective layer 341 may be 15 ⁇ m to 20 ⁇ m.
- the embodiment is not limited to this.
- the thickness of the first protective layer 341 may be smaller than the thickness of the circuit layer 320. Accordingly, the top surface of the first protective layer 341 and the top surface of the circuit layer 320 may have a step.
- the second protective layer 342 may be disposed on a portion of the upper surface of the first protective layer 341 having the step and on the upper surface of the circuit layer 320. Accordingly, the lower surface of the second protective layer 342 may have a step.
- Figure 12 is a diagram showing an antenna substrate according to a fourth embodiment.
- the antenna substrate includes an insulating layer 410, a circuit layer 420, and a protective layer.
- the insulating layer 410 and circuit layer 420 may be substantially the same as the insulating layer and circuit layer in the third embodiment. Accordingly, detailed description of the insulating layer 410 and circuit layer 420 will be omitted.
- the circuit layer 420 may include a first antenna unit 420-1 and a second antenna unit 420-2 spaced apart from each other on the insulating layer 410.
- the antenna substrate of the fourth embodiment may have a plurality of protective layers disposed on the insulating layer 410.
- the antenna substrate may include a first protective layer 441 disposed on the insulating layer 410. Additionally, the antenna substrate may include a second protective layer 442 disposed on the insulating layer 410 and the circuit layer 420.
- the first protective layer 441 may have the same material or dielectric constant as the first protective layer in the second and third embodiments. Additionally, the second protective layer 442 may have the same material or dielectric constant as the second protective layer in the second and third embodiments.
- the second protective layer in the second and third embodiments was disposed only in the area that vertically overlaps the circuit layer.
- the second protective layer in the second and third embodiments is not disposed in an area that horizontally overlaps the circuit layer. Accordingly, the antenna substrates in the second and third embodiments only had a shift characteristic of the resonant frequency.
- the second protective layer in the fourth embodiment may be formed not only in the area that overlaps vertically with the circuit layer 420, but also in the area that overlaps horizontally.
- the first protective layer 441 may include an opening 441O.
- the first protective layer 441 is disposed on the insulating layer 410. At this time, the first protective layer 441 may not vertically overlap the circuit layer 420.
- the first protective layer 441 may include an opening 441O that vertically overlaps the circuit layer 420.
- the width of the opening 441O may be larger than the width of the circuit layer 420.
- the opening 441O of the first protective layer 441 includes a first portion that vertically overlaps the circuit layer 420. Additionally, the opening 441O of the first protective layer 441 includes a second portion that vertically overlaps the upper surface of the insulating layer 410 adjacent to the circuit layer 420.
- the second protective layer 442 may be disposed within the opening 441O of the first protective layer 441.
- the second protective layer 442 may be disposed within the opening 441O of the first protective layer 441, surrounding the circuit layer 420.
- the second protective layer 442 may be disposed to cover the top and side surfaces of the circuit layer 420.
- the second protective layer 442 in the fourth embodiment is disposed not only in the area that vertically overlaps the circuit layer 420, but also in the area that overlaps the circuit layer 420 horizontally.
- the second protective layer 442 of the antenna substrate in the fourth embodiment not only performs the function of shifting the resonant frequency of the circuit layer 420, but also performs the function of preventing signal interference by reducing the gap between the plurality of antenna units. You can.
- both the resonance frequency shift function and the signal interference prevention function can be performed while minimizing the placement area of the relatively expensive second protective layer 442.
- the first protective layer 441 is shown to have the same height or thickness as the second protective layer 442, but is not limited thereto.
- Figure 13 is a diagram showing an antenna substrate according to the fifth embodiment.
- the antenna substrate includes an insulating layer 510, a circuit layer 520, and a protective layer.
- the insulating layer 510 and circuit layer 520 may be substantially the same as the insulating layer and circuit layer in the fourth embodiment. Accordingly, detailed description of the insulating layer 510 and circuit layer 520 will be omitted.
- the circuit layer 520 may include a first antenna unit 520-1 and a second antenna unit 520-2 spaced apart from each other on the insulating layer 510.
- the antenna substrate of the fifth embodiment may have a plurality of protective layers disposed on the insulating layer 510.
- the antenna substrate may include a first protective layer 541 disposed on the insulating layer 510.
- the antenna substrate may include a second protective layer 542 disposed on the insulating layer 510 and the circuit layer 520.
- the first protective layer 541 may have the same material or dielectric constant as the first protective layer in the fourth embodiment. Additionally, the second protective layer 542 may have the same material or dielectric constant as the second protective layer in the fourth embodiment.
- the first protective layer 541 may include an opening 541O.
- the first protective layer 541 is disposed on the insulating layer 510. At this time, the first protective layer 541 may not vertically overlap the circuit layer 520.
- the first protective layer 541 may include an opening 541O that vertically overlaps the circuit layer 520.
- the width of the opening 541O may be larger than the width of the circuit layer 520. Accordingly, the opening 541O of the first protective layer 541 includes a first portion that vertically overlaps the circuit layer 520. Additionally, the opening 541O of the first protective layer 541 includes a second portion that vertically overlaps the upper surface of the insulating layer 510 adjacent to the circuit layer 520.
- the second protective layer 542 may be disposed within the opening 541O of the first protective layer 541. Specifically, the second protective layer 542 may be disposed within the opening 541O of the first protective layer 541, surrounding the circuit layer 520.
- the second protective layer 542 may be disposed to cover the top and side surfaces of the circuit layer 520.
- the second protective layer 542 in the fifth embodiment is disposed not only in the area that overlaps the circuit layer 520 vertically, but also in the area that overlaps the circuit layer 520 horizontally.
- the height or thickness of the first protective layer 541 may be less than or equal to the height or thickness of the circuit layer 520.
- top surface of the second protective layer 542 is disposed on the top surface of the circuit layer 520, and thus may be positioned higher than the top surface of the first protective layer 541.
- the second protective layer 542 may include a first part disposed within the opening 541O and surrounding the circuit layer 520, and a second part extending from the first part. . Additionally, the second portion of the second protective layer 542 may be disposed on the upper surface of the first protective layer 541, which has a relatively low height.
- the embodiment is not limited to this.
- the second protective layer 542 has a height higher than the top surface of the first protective layer 541 and is disposed only in the area that vertically overlaps the opening 541O and the circuit layer 520. It can be.
- the second protective layer 542 in the fifth embodiment may be disposed in a pattern shape on each of the plurality of antenna units.
- Figure 14 is a diagram showing an antenna substrate according to the sixth embodiment.
- the antenna substrate includes an insulating layer 610, a circuit layer 620, and a protective layer.
- the insulating layer 610 and circuit layer 620 may be substantially the same as the insulating layer and circuit layer of the fifth embodiment. Accordingly, detailed description of the insulating layer 610 and circuit layer 620 will be omitted.
- the circuit layer 620 may include a first antenna unit 620-1 and a second antenna unit 620-2 spaced apart from each other on the insulating layer 610.
- the antenna substrate of the sixth embodiment may have a plurality of protective layers disposed on the insulating layer 610.
- the antenna substrate may include a first protective layer 641 disposed on the insulating layer 610.
- the antenna substrate may include a second protective layer 642 disposed on the insulating layer 610 and the circuit layer 620.
- a plurality of second protective layers 542 were arranged in a pattern shape on the circuit layer 520.
- the second protective layer 642 in the sixth embodiment may be formed integrally.
- the second protective layer 642 in the sixth embodiment includes the first protective layer 641, the opening 641O of the first protective layer 641, and the plurality of circuit layers 620. It may be disposed entirely on the antenna unit.
- the second protective layer 642 of the sixth embodiment may be formed on the plurality of antenna units in an integrated form that is interconnected rather than in a pattern shape.
- Figure 15 is a diagram showing an antenna substrate according to a seventh embodiment.
- the antenna substrate includes an insulating layer 710, a circuit layer 720, and a protective layer.
- the insulating layer 710 and circuit layer 720 may be substantially the same as the insulating layer and circuit layer of the fourth to sixth embodiments. Accordingly, detailed description of the insulating layer 710 and circuit layer 720 will be omitted.
- the circuit layer 720 may include a first antenna unit 720-1 and a second antenna unit 720-2 spaced apart from each other on the insulating layer 710.
- the antenna substrate of the seventh embodiment may have a plurality of protective layers disposed on the insulating layer 710.
- the antenna substrate may include a first protective layer 741 disposed on the insulating layer 710.
- the antenna substrate may include a second protective layer 742 disposed on the circuit layer 720.
- the antenna substrate of the seventh embodiment may be different from the antenna substrate of the fourth embodiment in terms of the width of the opening of the first protective layer and the arrangement structure of the second protective layer accordingly.
- the opening of the first protective layer in the fourth embodiment had a width greater than the width of the circuit layer.
- the opening 741O of the first protective layer 741 in the seventh embodiment may have the same width as the circuit layer 720.
- the second protective layer 742 may be disposed only on the upper surface of the circuit layer 720 within the opening 741O of the first protective layer 741.
- Figure 16 is a diagram showing an antenna substrate according to the eighth embodiment.
- the antenna substrate includes an insulating layer 810, a circuit layer 820, and a protective layer.
- the insulating layer 810 and circuit layer 820 may be substantially the same as the insulating layer and circuit layer of the seventh embodiment. Accordingly, detailed description of the insulating layer 810 and circuit layer 820 will be omitted.
- the circuit layer 820 may include a first antenna unit 820-1 and a second antenna unit 820-2 spaced apart from each other on the insulating layer 810.
- the antenna substrate of the eighth embodiment may have a plurality of protective layers disposed on the insulating layer 810.
- the antenna substrate may include a first protective layer 841 disposed on the insulating layer 810.
- the antenna substrate may include a second protective layer 842 disposed on the circuit layer 820.
- the antenna substrate of the eighth embodiment may be different from the antenna substrate of the fourth and seventh embodiments in the width of the opening of the first protective layer and the arrangement structure of the second protective layer accordingly.
- the opening of the first protective layer in the fourth embodiment had a width greater than the width of the circuit layer.
- the opening of the first protective layer in the seventh embodiment had the same width as the width of the circuit layer.
- the opening 841O of the first protective layer 841 in the eighth embodiment may have a width smaller than the width of the circuit layer 820.
- the second protective layer 842 may be partially disposed on the upper surface of the circuit layer 820.
- the first protective layer 841 may be disposed on the insulating layer 810, covering at least a portion of the upper surface of the circuit layer 820.
- the edge area of the upper surface of the circuit layer 820 may be covered with the first protective layer 841.
- the second protective layer 842 may be disposed within the opening 841O of the first protective layer 841, covering the central area of the upper surface of the circuit layer 820.
- Figure 17 is a diagram showing an antenna substrate according to the ninth embodiment.
- the antenna substrate includes an insulating layer 910, a circuit layer, and a protective layer.
- the upper surface of the insulating layer 910 may be divided into a plurality of regions.
- the top surface of the insulating layer 910 may include a first antenna area and a second antenna area.
- a first circuit layer 920a including a plurality of antenna units may be disposed in the first antenna area on the upper surface of the insulating layer 910.
- a second circuit layer 920b including a plurality of antenna units may be disposed in the second antenna area of the insulating layer 910.
- the first circuit layer 920a and the second circuit layer 920b can be divided according to antenna characteristics.
- the first circuit layer 920a may include an antenna unit that requires relatively low integration.
- the second circuit layer 920b may include an antenna unit that requires relatively high integration.
- a plurality of protective layers are disposed on the insulating layer 910 according to the characteristics required for the antenna unit of each circuit layer.
- a first protective layer 941 may be disposed on the first antenna area of the insulating layer 910, covering the first circuit layer 920a.
- the first protective layer 941 may correspond to the first protective layer with a relatively low dielectric constant described in the previous embodiment.
- a second protective layer 942 may be disposed on the second antenna area of the insulating layer 910, covering the second circuit layer 920b.
- the second protective layer 942 may correspond to the second protective layer with a relatively high dielectric constant described in the previous embodiment.
- the upper area of the insulating layer is divided into a plurality of antenna areas according to the required characteristics of the antenna unit.
- circuit layers each including a plurality of antenna units are disposed in the antenna area.
- protective layers with different dielectric constants are disposed on the plurality of antenna areas, covering each antenna unit. Accordingly, in the embodiment, it is possible to provide an antenna substrate that efficiently satisfies the required characteristics of the antenna unit while minimizing the placement area of the second protective layer with a relatively high dielectric constant.
- Figure 18 is a diagram showing an antenna substrate according to the tenth embodiment.
- the antenna substrate includes an insulating layer 1010, a circuit layer 1020, and a protective layer 1040.
- the circuit layer 1020 may be disposed on both sides of the insulating layer 1010, respectively.
- the circuit layer may include an upper circuit layer 1020a disposed on the upper surface of the insulating layer 1010 and a lower circuit layer 1020b disposed on the lower surface of the insulating layer 1010.
- the antenna substrate of the tenth embodiment may be a double-sided antenna substrate that radiates radiation beams from the top and bottom of the insulating layer 1010, respectively.
- the upper circuit layer 1020a may radiate the first radiation beam to the upper region of the insulating layer 1010.
- the lower circuit layer 1020b may radiate a second radiation beam different from the first radiation beam to the lower region of the insulating layer 1010.
- the protective layer 1040 may include a first high-constant protective layer 1040a disposed on the upper surface of the insulating layer 1010 and covering the upper circuit layer 1020a.
- the protective layer 1040 may include a second high-constant protective layer 1040b disposed on the lower surface of the insulating layer 1010 and covering the lower circuit layer 1020b.
- the first high-constant protective layer 1040a and the second high-constant protective layer 1040b may correspond to the protective layer 140 or the second protective layer described in the previous embodiment.
- the first high-constantivity protective layer 1040a and the second high-constantivity protective layer 1040b may have a dielectric constant (Dk) in the range of 20 to 40.
- the antenna substrates of the first to tenth embodiments have been described above.
- the antenna substrate of the present application may have a structure in which antenna substrates of at least two embodiments of the structures of the first to tenth embodiments are mixed.
- the arrangement structure of the second protective layer disposed in the second antenna area of FIG. 17 may have any one of the structures of the protective layer disposed on the antenna substrates of the first to eighth embodiments.
- the antenna device of the embodiment may include any one of the antenna substrates shown in FIGS. 5 and 11 to 18.
- the antenna substrate applied to the antenna device of the embodiment will be described as including the antenna substrate according to the first embodiment of FIG. 5.
- the antenna device of the embodiment is not limited to this, and may include an antenna substrate of another embodiment other than the first embodiment.
- FIG. 19 is a diagram showing an antenna device according to a first embodiment
- FIG. 20 is a diagram showing an antenna device according to a second embodiment.
- the antenna device may include an antenna substrate 1100 and a driving substrate 1200.
- the antenna substrate 1100 may correspond to any one of the first to tenth embodiments of the present application.
- the driving substrate 1200 may be manufactured separately from the antenna substrate 1100.
- the driving substrate 1200 may be a substrate separate from the antenna substrate 1100.
- the separated antenna substrate 1100 and the driving substrate 1200 can be manufactured through separate processes, and a process of combining them can be performed through this.
- the driving substrate 1200 may include a plurality of insulating layers 1210.
- the driving substrate 1200 may include three layers of insulating layers, but is not limited thereto. That is, the driving substrate 1200 may include two or fewer insulating layers, and alternatively, may include four or more insulating layers.
- the driving substrate 1200 may include a circuit pattern layer 1220 formed on the surface of at least one insulating layer 1210.
- the driving substrate 1200 may include a penetrating electrode 1230 that penetrates at least one insulating layer 1210.
- the through electrode 1230 of the driving substrate 1200 may electrically connect circuit pattern layers 1220 disposed in different layers.
- the driving substrate 1200 may include a first connection portion 1240 disposed on the circuit pattern layer disposed on the lowest side of the circuit pattern layer 1220.
- the first connection part 1240 may be a solder ball, but is not limited thereto.
- the driving substrate 1200 may include an element attached to the first connection portion 1240. At this time, the driving substrate 1200 includes a plurality of first connection parts spaced apart from each other. Additionally, the driving substrate 1200 may include a plurality of elements each mounted on the plurality of first connection parts.
- the driving substrate 1200 may include a driving element mounted on at least one first connection part among a plurality of first connection parts.
- the driving element may be a driving element that drives the antenna portion of the circuit layers included in the antenna substrate 1100.
- the driving element transmits a transmission signal to the antenna substrate 1100 so that a wireless signal corresponding to the transmission signal can be transmitted to the outside.
- the driving element may receive a reception signal received through the antenna substrate 1100 and analyze it to obtain reception information.
- the driving substrate 1200 may include a passive element mounted on at least one other first connection part among the plurality of first connection parts.
- the passive element may be an element that supports or assists the operation of the driving element.
- the passive elements may include resistors, capacitors, and inductors.
- the antenna device may include a second connection portion 1260 disposed between the driving substrate 1200 and the antenna substrate 1100.
- the second connection portion 1260 may be a solder ball, but is not limited thereto.
- the antenna device may further include a molding layer disposed between the antenna substrate 1100 and the driving substrate 1200 and molding the second connection portion 1260.
- the antenna device according to the second embodiment includes a first substrate layer 1300 and a second substrate layer 1400.
- the first substrate layer 1300 and the second substrate layer 1400 may form one substrate.
- the antenna device of the second embodiment preferentially manufactures a first substrate layer 1300 corresponding to the antenna substrate, and then an insulating layer 1310 and a circuit pattern corresponding to the second substrate layer 1400.
- An antenna device composed of a single substrate can be manufactured by performing a process of forming the layer 1320, the through electrode 1330, the first connection portion 1340, and the element 1350, respectively.
- the antenna device of the second embodiment may omit the second connection part, and the antenna substrate and the driving substrate may be provided as one integrated substrate.
- the antenna substrate in the embodiment includes an insulating layer, a circuit layer disposed on the insulating layer, and a protective layer.
- the protective layer includes a first area that vertically overlaps the circuit layer and a second area that does not vertically overlap the circuit layer.
- the protective layer has a dielectric constant in the range of 20 to 40.
- the first region of the protective layer may function to shift the resonant frequency of the radiation beam emitted by the circuit layer.
- the second region of the protective layer may function to reduce the gap between the plurality of antenna units constituting the circuit layer.
- the EMC layer included in the antenna substrate of the comparative example can be removed, thereby solving the problem of the EMC layer.
- the size (specifically, planar area) of the circuit layer can be reduced by shifting the resonant frequency using the first region of the protective layer. Accordingly, in the embodiment, the width of the antenna substrate in the horizontal direction can be reduced. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example. Additionally, in the embodiment, miniaturization of an electronic device including an antenna substrate is possible.
- the gap between a plurality of antenna units can be reduced by using the second area of the protective layer. Specifically, in the embodiment, even if the distance between the plurality of antenna units is reduced compared to the comparative example, signal interference that may occur between the antenna units can be prevented. Accordingly, in the embodiment, mutual signal interference of a plurality of antenna units can be prevented, and antenna characteristics and performance can be improved. Additionally, in the embodiment, integration of circuit layers included in the antenna substrate is possible. Additionally, in the embodiment, the number of antenna units arranged in the same area may be increased compared to the comparative example.
- the circuit layer in the embodiment includes a plurality of antenna units disposed on the insulating layer.
- the first and second regions of the protective layer are used to allow the plurality of antenna units to be arranged alternately or zigzagly on the insulating layer. That is, in the embodiment, as a plurality of antenna units are arranged alternately or zigzagly on the insulating layer, the degree of integration of the antenna units can be further improved. Accordingly, in the embodiment, antenna characteristics and performance can be further improved.
- the protective layer in the embodiment includes a first protective layer and a second protective layer.
- the first protective layer is a protective layer with a relatively low dielectric constant.
- the second protective layer is a protective layer with a relatively high high dielectric constant.
- the second protective layer may be disposed in an area that vertically overlaps the circuit layer. Additionally, the first protective layer may be selectively disposed in areas where the second protective layer is not disposed. Accordingly, in the embodiment, antenna characteristics and performance can be maximized while minimizing the placement area of the second protective layer.
- the antenna device of the embodiment may be applied to electronic devices.
- the electronic device includes a smart phone, a personal digital assistant, a digital video camera, a digital still camera, a network system, and a computer. ), monitor, tablet, laptop, netbook, television, video game, smart watch, automotive, etc.
- a smart phone a personal digital assistant
- a digital video camera a digital still camera
- a network system a network system
- a computer a computer.
- monitor tablet, laptop, netbook, television, video game, smart watch, automotive, etc.
- it is not limited to this, and of course, it can be any other electronic device that processes data.
- the antenna substrate having the characteristics of the above-described invention when used in IT devices or home appliances such as smartphones, server computers, and TVs, functions such as signal transmission or power supply can be stably performed.
- an antenna substrate having the characteristics of the present invention when an antenna substrate having the characteristics of the present invention performs a semiconductor package function, it can safely protect the semiconductor chip from external moisture or contaminants, and can prevent problems such as leakage current or electrical short circuits between terminals.
- the problem of electrical opening of the terminal supplying the semiconductor chip can be solved.
- the noise problem can be solved.
- the antenna substrate having the characteristics of the above-described invention can maintain the stable function of IT devices or home appliances, so that the entire product and the antenna substrate to which the present invention is applied can achieve functional unity or technical interoperability with each other.
- an antenna substrate having the characteristics of the above-mentioned invention is used in a transportation device such as a vehicle, it is possible to solve the problem of distortion of signals transmitted to the transportation device, or to safely protect the semiconductor chip that controls the transportation device from the outside and prevent leakage.
- the stability of the transport device can be further improved by solving the problem of electrical short-circuiting between currents or terminals, or the problem of electrical opening of the terminal supplying the semiconductor chip. Accordingly, the transport device and the antenna substrate to which the present invention is applied can achieve functional unity or technical interoperability with each other.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Aerials (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims (10)
- 절연층;상기 절연층 상에 배치된 회로층; 및상기 절연층 및 상기 회로층 상에 배치된 보호층을 포함하고,상기 보호층은,상기 회로층과 수직 방향 및 수평 방향으로 중첩되며 배치되고, 20 내지 40 사이의 유전율(Dk)을 가지는,안테나 기판.
- 제1항에 있어서,상기 회로층은 상기 안테나 기판의 최상측에 배치된 안테나부이고,상기 보호층은 상기 절연층 및 상기 안테나부 상에 배치된 솔더 레지스트인,안테나 기판.
- 제1항 또는 제2항에 있어서,상기 보호층은,레진; 및상기 레진 내에 배치되고, TiO2, Al2O3, BaTiO3 및 CaTiO3에서 적어도 하나로 구성된 필러를 포함하는,안테나 기판.
- 제3항에 있어서,상기 보호층에서의 상기 필러의 함량은 35wt% 내지 85wt%의 범위를 만족하는,안테나 기판.
- 제1항 또는 제2항에 있어서,상기 회로층은,상기 절연층 상에 상호 이격되어 배치되는 복수의 안테나부를 포함하고,상기 복수의 안테나부 중 서로 인접한 2개의 안테나부는 0.5mm 내지 1.5mm 사이의 간격을 가지고 이격되는,안테나 기판.
- 제5항에 있어서,상기 복수의 안테나부는,상기 절연층 상에서 대각 방향으로 상호 교대 또는 지그재그로 배치되고,상기 간격은 상호 인접하게 배치된 2개의 안테나부 사이의 대각 방향으로의 이격 거리인,안테나 기판.
- 제1항 또는 제2항에 있어서,상기 보호층은,상기 회로층과 두께 방향으로 중첩된 제1 영역; 및상기 제1 영역을 제외한 제2 영역을 포함하고,상기 보호층의 상기 제1 영역의 두께는 5㎛ 내지 25㎛의 범위를 만족하는,안테나 기판.
- 제7항에 있어서,상기 보호층의 상기 제1 영역의 상면은 상기 보호층의 상기 제2 영역의 상면과 동일 높이를 가지는,안테나 기판.
- 제7항에 있어서,상기 보호층의 상기 제1 영역의 상면은 상기 보호층의 제2 영역의 상면과 단차를 가지는,안테나 기판.
- 절연층;상기 절연층 상에 배치된 회로층;상기 절연층 상에 배치된 제1 보호층; 및상기 회로층 상에 배치된 제2 보호층을 포함하고,상기 제1 보호층은 제1 유전율을 가지고,상기 제2 보호층은 상기 제1 유전율보다 큰 제2 유전율을 가지며,상기 제2 유전율은 상기 제1 유전율의 4배 내지 14배 사이의 범위를 가지는,안테나 기판.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380030460.6A CN118947021A (zh) | 2022-03-25 | 2023-03-23 | 天线基板 |
| JP2024556558A JP2025510188A (ja) | 2022-03-25 | 2023-03-23 | アンテナ基板 |
| EP23775325.6A EP4503331A4 (en) | 2022-03-25 | 2023-03-23 | ANTENNA SUBSTRATE |
| US18/850,087 US20250286280A1 (en) | 2022-03-25 | 2023-03-23 | Antenna substrate |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220037623A KR20230139240A (ko) | 2022-03-25 | 2022-03-25 | 안테나 기판 및 이를 포함하는 안테나 장치 |
| KR10-2022-0037623 | 2022-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023182829A1 true WO2023182829A1 (ko) | 2023-09-28 |
Family
ID=88101865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/003863 Ceased WO2023182829A1 (ko) | 2022-03-25 | 2023-03-23 | 안테나 기판 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250286280A1 (ko) |
| EP (1) | EP4503331A4 (ko) |
| JP (1) | JP2025510188A (ko) |
| KR (1) | KR20230139240A (ko) |
| CN (1) | CN118947021A (ko) |
| WO (1) | WO2023182829A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140002542A (ko) * | 2012-06-29 | 2014-01-08 | 쿄세라 에스엘시 테크놀로지 가부시키가이샤 | 안테나 기판 |
| JP2015053564A (ja) * | 2013-09-05 | 2015-03-19 | 住友電工プリントサーキット株式会社 | アンテナ基板 |
| JP2016527701A (ja) * | 2013-04-12 | 2016-09-08 | ザ ボード オブ トラスティーズ オブ ザ ユニヴァーシティー オブ イリノイ | 無機及び有機の過渡電子デバイス |
| JP2018046440A (ja) * | 2016-09-15 | 2018-03-22 | 京セラ株式会社 | アンテナ基板 |
| KR20200003509A (ko) * | 2018-07-02 | 2020-01-10 | 삼성전자주식회사 | 유전 손실이 다른 복수의 유전체들을 갖는 절연층을 포함하는 회로 기판, 및 이를 포함하는 전자 장치 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4114618B2 (ja) * | 2004-02-23 | 2008-07-09 | 旭硝子株式会社 | アンテナおよびその製造方法 |
| KR102844899B1 (ko) * | 2020-09-28 | 2025-08-11 | 엘지이노텍 주식회사 | 안테나 기판 |
-
2022
- 2022-03-25 KR KR1020220037623A patent/KR20230139240A/ko active Pending
-
2023
- 2023-03-23 US US18/850,087 patent/US20250286280A1/en active Pending
- 2023-03-23 WO PCT/KR2023/003863 patent/WO2023182829A1/ko not_active Ceased
- 2023-03-23 EP EP23775325.6A patent/EP4503331A4/en active Pending
- 2023-03-23 CN CN202380030460.6A patent/CN118947021A/zh active Pending
- 2023-03-23 JP JP2024556558A patent/JP2025510188A/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140002542A (ko) * | 2012-06-29 | 2014-01-08 | 쿄세라 에스엘시 테크놀로지 가부시키가이샤 | 안테나 기판 |
| JP2016527701A (ja) * | 2013-04-12 | 2016-09-08 | ザ ボード オブ トラスティーズ オブ ザ ユニヴァーシティー オブ イリノイ | 無機及び有機の過渡電子デバイス |
| JP2015053564A (ja) * | 2013-09-05 | 2015-03-19 | 住友電工プリントサーキット株式会社 | アンテナ基板 |
| JP2018046440A (ja) * | 2016-09-15 | 2018-03-22 | 京セラ株式会社 | アンテナ基板 |
| KR20200003509A (ko) * | 2018-07-02 | 2020-01-10 | 삼성전자주식회사 | 유전 손실이 다른 복수의 유전체들을 갖는 절연층을 포함하는 회로 기판, 및 이를 포함하는 전자 장치 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4503331A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025510188A (ja) | 2025-04-14 |
| US20250286280A1 (en) | 2025-09-11 |
| EP4503331A4 (en) | 2026-03-11 |
| CN118947021A (zh) | 2024-11-12 |
| KR20230139240A (ko) | 2023-10-05 |
| EP4503331A1 (en) | 2025-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019088563A1 (ko) | 연성 회로기판 및 이를 포함하는 칩 패키지 | |
| WO2019240538A1 (ko) | 인쇄회로기판 및 이를 포함하는 카메라 장치 | |
| WO2018212498A1 (ko) | 올인원 칩 온 필름용 연성 회로기판 및 이를 포함하는 칩 패키지, 및 이를 포함하는 전자 디바이스 | |
| WO2020153823A1 (ko) | 복수의 인쇄 회로 기판들이 적층된 안테나 모듈 및 이를 포함하는 전자 장치 | |
| WO2020171397A1 (en) | Flexible flat cable and method of producing the same | |
| WO2023200219A1 (ko) | 회로 기판 및 이를 포함하는 반도체 패키지 | |
| WO2020105956A1 (ko) | 이미지 센서용 기판 | |
| WO2023096350A1 (ko) | 회로기판 및 이를 포함하는 반도체 패키지 | |
| WO2023101465A1 (ko) | 반도체 패키지 | |
| WO2023043188A1 (ko) | 회로기판 및 이를 포함하는 반도체 패키지 | |
| WO2023027554A1 (ko) | 회로 기판 및 이를 포함하는 반도체 패키지 | |
| WO2023080721A1 (ko) | 회로기판 | |
| WO2021040367A1 (ko) | 인쇄회로기판 | |
| WO2023113386A1 (ko) | 회로 기판 | |
| WO2023090843A1 (ko) | 회로기판 및 이를 포함하는 반도체 패키지 | |
| WO2023043183A1 (ko) | 회로 기판 및 이를 포함하는 반도체 패키지 | |
| WO2023043250A1 (ko) | 반도체 패키지 | |
| WO2023182829A1 (ko) | 안테나 기판 | |
| WO2022005152A1 (ko) | 회로 기판 | |
| WO2023128729A1 (ko) | 회로 기판 | |
| WO2021187794A1 (ko) | 복수의 안테나를 포함하는 전자 장치 | |
| WO2020209538A1 (ko) | 수직구간 및 수평구간이 형성된 연성회로기판 | |
| WO2023008967A1 (ko) | 회로 기판 및 이를 포함하는 반도체 패키지 | |
| WO2023008966A1 (ko) | 회로 기판 및 이를 포함하는 반도체 패키지 | |
| WO2022086295A1 (ko) | 회로 기판 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23775325 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024556558 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380030460.6 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023775325 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023775325 Country of ref document: EP Effective date: 20241025 |
|
| WWP | Wipo information: published in national office |
Ref document number: 18850087 Country of ref document: US |