WO2023171718A1 - Antenna and display device - Google Patents

Antenna and display device Download PDF

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Publication number
WO2023171718A1
WO2023171718A1 PCT/JP2023/008871 JP2023008871W WO2023171718A1 WO 2023171718 A1 WO2023171718 A1 WO 2023171718A1 JP 2023008871 W JP2023008871 W JP 2023008871W WO 2023171718 A1 WO2023171718 A1 WO 2023171718A1
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WO
WIPO (PCT)
Prior art keywords
conductor
terminal
antenna
pattern
layer
Prior art date
Application number
PCT/JP2023/008871
Other languages
French (fr)
Japanese (ja)
Inventor
謙一 手塚
康正 張原
智之 五井
芽衣 深谷
Original Assignee
Tdk株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tdk株式会社 filed Critical Tdk株式会社
Publication of WO2023171718A1 publication Critical patent/WO2023171718A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

Definitions

  • the present disclosure relates to an antenna and a display device.
  • an antenna including a radiation pattern and a power feeding transmission line connected to the radiation pattern is known (for example, Patent Document 1).
  • a ground pad portion is formed at the end of the transmission line opposite to the radiation pattern.
  • the ground pad portions are arranged separately for each antenna. Such antennas are required to ensure electrical stability.
  • an object of the present disclosure is to provide an antenna and a display device that can ensure electrical stability.
  • An antenna includes a base material, an antenna pattern configured of a conductor pattern arranged on one main surface of the base material, and a conductor pattern arranged on one main surface of the base material.
  • the antenna pattern includes a radiation conductor, a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed the radiation conductor. It has a line, and a first terminal and a second terminal connected to the first feed line and the second feed line, respectively, and the ground pattern is between the first terminal and the second terminal. a first side portion arranged to sandwich the first terminal between the center portion; and a first side portion arranged to sandwich the second terminal between the center portion.
  • first connecting portion connecting the central portion and the first side portion; and a second connecting portion connecting the central portion and the second side portion;
  • the connecting portion extends between the first terminal and the end of the base material on one main surface of the base material, and the second connecting portion extends on one main surface of the base material. , extending between the second terminal and the end of the substrate.
  • a display device includes the above-described antenna.
  • an antenna and a display device that can ensure electrical stability.
  • FIG. 1 is a plan view showing an embodiment of a conductive film including an antenna.
  • 2 is a sectional view taken along line II-II in FIG. 1.
  • FIG. FIG. 7 is a cross-sectional view showing an antenna according to a modification.
  • FIG. 1 is a cross-sectional view showing an embodiment of a display device.
  • FIG. 3 is a plan view of the antenna.
  • 6 is a sectional view taken along line VI-VI in FIG. 5.
  • FIG. This is an antenna with a plurality of antenna patterns and ground patterns lined up.
  • FIG. 7 is a plan view of an antenna according to a modified example.
  • FIG. 1 is a plan view showing a conductive film including an antenna according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1.
  • the conductive film 20 shown in FIGS. 1 and 2 includes a film-like light-transmitting base material 1 (base material) and a conductive layer 5 provided on one main surface 1S of the light-transmitting base material 1. and a light-transparent resin layer 7B provided on one main surface 1S of the light-transparent base material 1.
  • the conductive layer 5 includes a conductor portion 3 including a portion having a pattern that extends in a direction along the main surface 1S of the light-transmitting substrate 1 and includes a plurality of openings 3a, and fills the inside of the opening 3a of the conductor portion 3. It has an insulating resin part 7A.
  • the conductive layer 5 is shown in a deformed state, and the width of the conductor portion 3 is shown in an emphasized state.
  • the thickness of each layer is also shown in a deformed state. Details of the thickness of each layer will be described later. Further, in the example shown in FIG. 1, the conductive layer 5 is formed near one short side of the conductive film 20, but the position where the conductive layer 5 is formed is not particularly limited, and is formed near the long side. A conductive layer 5 may also be formed.
  • the light-transmitting base material 1 has a level of light-transmitting property required when the conductive film 20 is incorporated into a display device. Specifically, the total light transmittance of the light-transmitting substrate 1 may be 90 to 100%. The haze of the light-transmitting substrate 1 may be 0 to 5%.
  • the light-transmitting substrate 1 may be, for example, a transparent resin film, and examples thereof include polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), cycloolefin polymer (COP), or polyimide. (PI) film is mentioned.
  • the light-transmissive base material 1 may be a glass substrate.
  • the light-transmitting substrate 1 is a laminate including a light-transmitting support film 11, and an intermediate resin layer 12 and a base layer 13 provided in this order on the support film 11. Good too.
  • the support film 11 may be the transparent resin film described above.
  • the base layer 13 is a layer provided to form the conductor portion 3 by electroless plating or the like. When forming the conductor portion 3 by another method, the base layer 13 does not necessarily need to be provided.
  • the intermediate resin layer 12 may not be provided between the support film 11 and the base layer 13.
  • the thickness of the light-transmitting substrate 1 or the support film 11 constituting it may be 10 ⁇ m or more, 20 ⁇ m or more, or 35 ⁇ m or more, and may be 500 ⁇ m or less, 200 ⁇ m or less, or 100 ⁇ m or less.
  • the adhesion between the support film 11 and the base layer 13 can be improved.
  • the intermediate resin layer 12 is provided between the support film 11 and the light-transparent resin layer 7B, thereby improving the adhesion between the support film 11 and the light-transparent resin layer 7B. It can be improved.
  • the intermediate resin layer 12 may be a layer containing a resin and an inorganic filler.
  • An example of the resin constituting the intermediate resin layer 12 is acrylic resin.
  • An example of an inorganic filler is silica.
  • the thickness of the intermediate resin layer 12 may be, for example, 5 nm or more, 100 nm or more, or 200 nm or more, or 10 ⁇ m or less, 5 ⁇ m or less, or 2 ⁇ m or less.
  • the base layer 13 may be a layer containing a catalyst and a resin.
  • the resin may be a cured product of a curable resin composition.
  • curable resins contained in the curable resin composition include amino resins, cyanate resins, isocyanate resins, polyimide resins, epoxy resins, oxetane resins, polyesters, allyl resins, phenolic resins, benzoxazine resins, xylene resins, and ketones.
  • Resin furan resin, COPNA resin, silicone resin, dichloropentadiene resin, benzocyclobutene resin, episulfide resin, ene-thiol resin, polyazomethine resin, polyvinylbenzyl ether compound, acenaphthylene, as well as unsaturated double bond, cyclic ether, and ultraviolet curing resins containing a functional group that causes a polymerization reaction with ultraviolet light, such as vinyl ether.
  • the catalyst included in the base layer 13 may be an electroless plating catalyst.
  • the electroless plating catalyst may be a metal selected from Pd, Cu, Ni, Co, Au, Ag, Pd, Rh, Pt, In, and Sn, or may be Pd.
  • the catalyst may be used alone or in combination of two or more types. Typically, the catalyst is dispersed in the resin as catalyst particles.
  • the content of the catalyst in the base layer 13 may be 3% by mass or more, 4% by mass or more, or 5% by mass or more, and 50% by mass or less, 40% by mass or less, or It may be 25% by mass or less.
  • the thickness of the base layer 13 may be 10 nm or more, 20 nm or more, or 30 nm or more, and may be 500 nm or less, 300 nm or less, or 150 nm or less.
  • the light-transmitting base material 1 may further include a protective layer provided on the main surface of the support film 11 on the opposite side to the light-transmitting resin layer 7B and the conductor portion 3. By providing the protective layer, damage to the support film 11 is suppressed.
  • the protective layer can be a layer similar to the intermediate resin layer 12.
  • the thickness of the protective layer may be 5 nm or more, 50 nm or more, or 500 nm or more, and may be 10 ⁇ m or less, 5 ⁇ m or less, or 2 ⁇ m or less.
  • the conductor portion 3 constituting the conductive layer 5 includes a portion having a pattern including an opening 3a.
  • the pattern including the openings 3a includes a mesh pattern including a plurality of regularly arranged openings 3a formed by a plurality of linear portions that intersect with each other.
  • the conductor portion 3 having a mesh-like pattern functions as a radiation conductor and a feed line of an antenna 200, which will be described later.
  • the conductor portion 3 includes a solid planar pattern without openings 3a, or a pattern that is a combination of a solid planar pattern on a mesh pattern.
  • the conductor portion 3 having a planar pattern functions as a terminal pad portion and a ground pattern, which will be described later. Note that details of the structure of the pattern of the conductor portion 3 in the conductive layer 5 will be described later.
  • the conductor portion 3 may contain metal.
  • the conductor portion 3 may contain at least one metal selected from copper, nickel, cobalt, palladium, silver, gold, platinum, and tin, and may also contain copper.
  • the conductor portion 3 may be metal plated by a plating method.
  • the conductor portion 3 may further contain a nonmetallic element such as phosphorus within a range where appropriate conductivity is maintained.
  • the conductor portion 3 may be a laminate composed of multiple layers. Further, the conductor portion 3 may have a blackened layer as a surface layer portion on the opposite side from the light-transmitting base material 1. The blackening layer can contribute to improving the visibility of a display device incorporating a conductive film.
  • the insulating resin part 7A is made of a resin having light transmittance, and is provided to fill the opening 3a of the conductor part 3. Usually, the insulating resin part 7A and the conductor part 3 form a flat surface. has been done.
  • the light-transmitting resin layer 7B is formed of a resin having light-transmitting properties.
  • the total light transmittance of the light-transmitting resin layer 7B may be 90 to 100%.
  • the haze of the light-transmitting resin layer 7B may be 0 to 5%.
  • the difference between the refractive index of the light-transmissive base material 1 (or the refractive index of the support film constituting the light-transparent base material 1) and the refractive index of the light-transparent resin layer 7B may be 0.1 or less. This makes it easier to ensure good visibility of the displayed image.
  • the refractive index (nd25) of the light-transmitting resin layer 7B may be, for example, 1.0 or more, 1.7 or less, 1.6 or less, or 1.5 or less.
  • the refractive index can be measured using a reflection spectroscopic film thickness meter. From the viewpoint of uniformity of optical path length, the conductor portion 3, the insulating resin portion 7A, and the light-transmitting resin layer 7B may have substantially the same thickness.
  • the resin forming the insulating resin portion 7A and the light-transmitting resin layer 7B may be a cured product of a curable resin composition (a photocurable resin composition or a thermosetting resin composition).
  • the curable resin composition forming the insulating resin portion 7A and/or the light-transmitting resin layer 7B includes a curable resin, and examples thereof include acrylic resin, amino resin, cyanate resin, isocyanate resin, polyimide resin, and epoxy resin.
  • Resin oxetane resin, polyester, allyl resin, phenolic resin, benzoxazine resin, xylene resin, ketone resin, furan resin, COPNA resin, silicon resin, dichloropentadiene resin, benzocyclobutene resin, episulfide resin, ene-thiol resin, poly
  • examples include azomethine resin, polyvinylbenzyl ether compound, acenaphthylene, and ultraviolet curable resins containing functional groups that cause a polymerization reaction with ultraviolet rays, such as unsaturated double bonds, cyclic ethers, and vinyl ethers.
  • the resin forming the insulating resin portion 7A and the resin forming the light-transmitting resin layer 7B may be the same. Since the insulating resin portion 7A and the light-transmitting resin layer 7B made of the same resin have the same refractive index, the uniformity of the optical path length passing through the conductive film 20 can be further improved.
  • the insulating resin portion 7A and the resin forming the light-transmitting resin layer 7B are the same, the insulating resin portion 7A can be formed by forming a pattern from one curable resin layer by imprinting or the like, for example. and the light-transmitting resin layer 7B can be easily formed all at once.
  • the conductive film 20 can be manufactured, for example, by a method including pattern formation using an imprint method.
  • An example of a method for manufacturing the conductive film 20 is to prepare a light-transmitting base material 1 having a support film and a base layer containing an intermediate resin layer and a catalyst provided on one main surface of the support film.
  • a curable resin layer is formed on the main surface 1S of the light-transmitting substrate 1 on the base layer side, and a trench in which the base layer is exposed is formed by an imprint method using a mold having a convex portion. and forming the conductor portion 3 filling the trench by an electroless plating method in which metal plating is grown from a base layer.
  • the insulating resin part 7A and the light-transmitting resin layer 7B having a pattern including openings having an inverted shape of the convex parts of the mold are formed. Formed all at once.
  • the method for forming the insulating resin portion 7A having a pattern including openings is not limited to the imprint method, and any method such as photolithography can be applied.
  • FIG. 4 is a cross-sectional view showing one embodiment of a display device incorporating a conductive film.
  • the display device 100 shown in FIG. 4 includes an image display section 10 having an image display area 10S, a dielectric layer 15, a conductive film 20 (antenna 200), a polarizing plate 30, and a cover glass 40.
  • the image display section 10 functions as a ground conductor for the antenna 200 of the conductive film 20.
  • the planar transparent antenna 200 has a configuration of a patch antenna.
  • the dielectric layer 15, the conductive film 20, the polarizing plate 30, and the cover glass 40 are laminated in this order from the image display section 10 side on the image display area 10S side of the image display section 10.
  • the configuration of the display device is not limited to the form shown in FIG. 4, and can be modified as necessary.
  • the polarizing plate 30 may be provided between the image display section 10 and the conductive film 20.
  • the image display section 10 may be, for example, a liquid crystal display section.
  • the polarizing plate 30 and the cover glass 40 those commonly used in display devices can be used.
  • the polarizing plate 30 and the cover glass 40 do not necessarily need to be provided.
  • Light for image display emitted from the image display area 10S of the image display section 10 passes through a path including the conductive film 20 and having a highly uniform optical path length. Thereby, it is possible to display a good image with high uniformity in which moire is suppressed.
  • Antenna 200 includes the conductive layer 5 described above.
  • FIG. 5 is a plan view of antenna 200.
  • FIG. 5 shows an enlarged portion of the antenna.
  • the XY coordinates are set on a plane parallel to the main surface 1S.
  • the X-axis direction is a direction parallel to the main surface 1S, and a direction along the end 1a of the light-transmitting base material 1.
  • the Y-axis direction is a direction parallel to the main surface 1S and perpendicular to the X-axis direction.
  • the center side of the conductive film 20 is defined as the positive side in the Y-axis direction, and the outer peripheral side of the conductive film 20 is defined as the negative side in the Y-axis direction.
  • the X-axis direction is a direction perpendicular to the Y-axis direction along the main surface 1S, and one side on which the end portion 1a extends is defined as the positive side in the X-axis direction, and the other side is defined as the negative side in the X-axis direction.
  • the conductive layer 5 of the antenna 200 includes an antenna pattern 201 and a ground pattern 202.
  • the antenna pattern 201 is a pattern composed of a conductive pattern arranged on one main surface 1S of the light-transmissive base material 1.
  • the ground pattern 202 is a pattern composed of a conductor pattern arranged on one main surface 1S of the light-transmissive base material 1.
  • the antenna pattern 201 includes a radiation conductor 21, a first feed line 22A, a second feed line 22B, a first terminal pad part 23A (first terminal), and a second terminal pad part 23B (first terminal). 2 terminals).
  • the ground pattern 202 has a center portion 24A, a first side portion 24B, a second side portion 24C, a first connection portion 24D, and a second connection portion 24E.
  • the antenna 200 has a configuration that is axisymmetric with respect to a center line CL that is parallel to the Y-axis direction.
  • the radiation conductor 21 is a region that radiates signals as an antenna.
  • the radiation conductor 21 has a circular shape.
  • the center of the radiation conductor 21 is placed on the center line CL.
  • the radiation conductor 21 is arranged at a position spaced apart from the end portion 1a of the light-transmitting substrate 1 toward the positive side in the Y-axis direction.
  • the radiation conductor 21 has a diameter R. Note that the radiation conductor 21 does not need to have a circular shape, and may have a rectangular shape or a square shape, or may have a polygonal shape other than a rectangle or a square.
  • the feed lines 22A and 22B are lines that feed power to the radiation conductor 21.
  • antenna 200 functions as a dual polarization antenna.
  • a diagonally polarized signal in the direction in which the inclined portion 22b of the first feed line 22A extends is fed via the first feed line 22A, and a diagonally polarized signal in the direction in which the inclined portion 22b of the second feed line 22B extends.
  • the wave signal can be fed via the second feed line 22B.
  • the feed lines 22A, 22B have a vertical portion 22a extending perpendicularly to the end 1a of the light-transmissive base material 1, and an inclined portion 22b inclined with respect to the Y-axis direction.
  • the vertical portion 22a of the first feed line 22A extends from the terminal pad portion 23A formed on the end portion 1a side of the light-transmitting substrate 1 toward the positive side in the Y-axis direction.
  • the vertical portion 22a of the first feed line 22A extends parallel to the center line CL (ie, the Y-axis direction) at a position spaced apart from the center line CL on the negative side in the X-axis direction.
  • the inclined portion 22b of the first feed line 22A moves from the positive end of the vertical portion 22a in the Y-axis direction toward the center line CL (i.e., toward the positive side in the X-axis direction) as it goes toward the positive side in the Y-axis direction. Lean closer.
  • the positive end of the inclined portion 22b of the first feed line 22A in the Y-axis direction is connected to the outer peripheral edge 21a of the radiation conductor 21.
  • the first feed line 22A has a constant width W1 in the vertical portion 22a and the inclined portion 22b. Further, the first feed line 22A has a line length L1 that is the total length of the vertical portion 22a and the inclined portion 22b.
  • the width dimension W1 is the dimension in the in-plane direction of the planar antenna 200 in a direction perpendicular to the extending direction of the vertical portion 22a and the inclined portion 22b
  • the line length L1 is the dimension in the in-plane direction of the planar antenna 200. This is the dimension along the extending direction of the vertical portion 22a and the inclined portion 22b in the inward direction.
  • the vertical portion 22a of the first feed line 22A is arranged at a position farther away from the negative end of the radiation conductor 21 in the X-axis direction toward the negative side in the X-axis direction. Ru. Further, the positive end of the vertical portion 22a of the first feed line 22A in the Y-axis direction (i.e., the connection portion with the inclined portion 22b) is smaller than the negative end of the radiation conductor 21 in the Y-axis direction. It is arranged at a position spaced apart toward the negative side in the Y-axis direction.
  • the arrangement and shape of the vertical portion 22a and the inclined portion 22b are not particularly limited.
  • the second feed line 22B has a line-symmetrical structure with the first feed line 22A with respect to the center line CL.
  • the inclined part 22b of the first feed line 22A and the inclined part 22b of the second feed line 22B are connected to a virtual line extending the inclined part 22b of the first feed line 22A and the second feed line 22B.
  • the radiating conductor 21 is connected to the outer peripheral edge 21a of the radiation conductor 21 so that the imaginary line extending from the inclined portion 22b is perpendicular to the imaginary line.
  • the angle formed by the imaginary line extending the inclined portion 22b of the first feed line 22A and the imaginary line extending the inclined portion 22b of the second feed line 22B is 90 degrees.
  • the terminal pad portions 23A and 23B are terminals connected to the power supply lines 22A and 22B, respectively.
  • the terminal pad portions 23A, 23B are connected to external input/output terminals to feed power to the radiation conductor 21 via the power feed lines 22A, 22B.
  • the terminal pad portions 23A and 23B are arranged near the end portion 1a of the light-transmissive base material 1.
  • the terminal pad portions 23A, 23B extend from the negative end in the Y-axis direction of the vertical portion 22a of the feed lines 22A, 22B toward the end 1a toward the negative side in the Y-axis direction.
  • the terminal pad portions 23A and 23B extend in the Y-axis direction with a constant width dimension W2.
  • the terminal pad portions 23A and 23B extend in the X-axis direction with a width dimension L2.
  • the ground pattern 202 is an area that is electrically grounded.
  • the ground pattern 202 is connected to a ground terminal (not shown).
  • the ground pattern 202 is insulated from the terminal pad parts 23A, 23B by being arranged with a gap between them.
  • the central portion 24A is arranged between the first terminal pad portion 23A and the second terminal pad portion 23B.
  • the center portion 24A is formed to extend in the X-axis direction along the end portion 1a in a region between the terminal pad portions 23A and 23B.
  • the first side portion 24B is arranged to sandwich the first terminal pad portion 23A between the first side portion 24B and the center portion 24A.
  • the first side portion 24B is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the first terminal pad portion 23A in the X-axis direction.
  • the second side portion 24C is arranged to sandwich the second terminal pad portion 23B between the second side portion 24C and the center portion 24A.
  • the second side portion 24C is formed to extend in the X-axis direction along the end portion 1a in a region on the positive side of the second terminal pad portion 23B in the X-axis direction.
  • the center portion 24A and the side portions 24B and 24C extend in a band shape in the X-axis direction with a constant width dimension in the Y-axis direction.
  • the end portions of the center portion 24A and the side portions 24B and 24C on the positive side in the Y-axis direction extend parallel to the X-axis direction.
  • the positive ends of the center portion 24A and the side portions 24B and 24C in the Y-axis direction are arranged at the same position in the Y-axis direction as the positive ends of the terminal pad portions 23A and 23B in the Y-axis direction. .
  • the first connecting portion 24D connects the center portion 24A and the first side portion 24B.
  • the first connecting portion 24D extends between the first terminal pad portion 23A and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1.
  • the first connection portion 24D is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the first terminal pad portion 23A in the Y-axis direction.
  • the second connecting portion 24E connects the center portion 24A and the second side portion 24C.
  • the second connecting portion 24E extends between the second terminal pad portion 23B and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1.
  • the second connection portion 24E is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the second terminal pad portion 23B in the Y-axis direction.
  • the connecting portions 24D and 24E extend in a band shape in the X-axis direction with a constant width L3 in the Y-axis direction.
  • the negative ends of the central portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction extend parallel to the X-axis direction.
  • the negative end portions of the center portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction are arranged at the same position as the end portion 1a in the Y-axis direction.
  • the negative end portions of the central portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction are on one main surface 1S of the light-transmitting base material 1. It extends to the end 1a. Note that the ends of the central part 24A, the side parts 24B, 24C, and the connecting parts 24D, 24E on the negative side in the Y-axis direction are located on the positive side in the Y-axis direction from the end 1a of the light-transmitting base material 1. It doesn't matter if you do.
  • a width L3 of the connecting portions 24D and 24E in the Y-axis direction is smaller than a width L2 of the terminal pad portions 23A and 23B in the Y-axis direction.
  • the antenna 200 has, as the conductor portion 3, a planar conductor pattern 54 formed by solidly coating a conductive material.
  • the terminal pad portions 23A, 23B and the ground pattern 202 have a planar conductor pattern 54.
  • FIG. 6 is a schematic cross-sectional view taken along line VI-VI shown in FIG.
  • a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1.
  • the terminal pad portions 23A, 23B include a mesh conductor layer 70 provided in a mesh-shaped trench of the resin layer 7, and a planar first plane conductor layer 71 disposed on the mesh conductor layer 70.
  • the mesh conductor layer 70 is an example of a conductor layer having a conductor pattern including a plurality of openings.
  • the mesh conductor layer 70 is a layer containing the aforementioned mesh-like conductor pattern 50.
  • a resin layer 7 is placed in the opening between the power lines.
  • the ground pattern 202 includes a second planar conductor layer 72 arranged on the resin layer 7 . Only the resin layer 7 exists in the lower layer where the second planar conductor layer 72 is arranged, and the mesh-like conductor pattern 50 does not exist.
  • the planar conductor layers 71 and 72 are planar conductor patterns formed by solidly coating a conductive material. The planar conductor layers 71 and 72 extend parallel to the main surface 1S so as to have a width wider than each conductive line of the mesh conductor layer 70.
  • FIG. 6(b) shows a layer structure with a different pattern from that in FIG. 6(a).
  • a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1.
  • the terminal pad portions 23A, 23B and the ground pattern 202 are formed by a mesh conductor layer 70 provided in a mesh-shaped trench of the resin layer 7, and a planar first plane conductor layer 71 disposed on the mesh conductor layer 70. and has.
  • the mesh conductor layer 70 is an example of a conductor layer having a conductor pattern including a plurality of openings.
  • the thickness of the first planar conductor layer 71 is thicker than the thickness of the mesh conductor layer 70.
  • the thickness of the second planar conductor layer 72 is greater than the thickness of the mesh conductor layer 70.
  • the radiation conductor 21 and the feed lines 22A, 22B of the antenna pattern 201 are constituted only by the mesh conductor layer 70, and do not have the first plane conductor layer 71 on top. That is, the conductor thickness of the radiation conductor 21 of the antenna pattern 201 and the feed lines 22A, 22B corresponds to the thickness of the mesh conductor layer 70. Therefore, the conductor thickness of the ground pattern 202 is thicker than the thickness of the radiation conductor 21 of the antenna pattern 201 and the feed lines 22A and 22B.
  • connection parts 24D and 24E are not shown in FIG. 6, they have the same layer structure as the center part 24A and the side parts 24B and 24C. Further, in the mesh conductor layer 70, some of the conductive wires forming the mesh conductor pattern may be disconnected.
  • terminal pad portions 23A, 23B and the ground pattern 202 have a mesh-like conductor pattern 50 instead of the solid planar conductor pattern 54, similar to the radiation conductor 21 and the feed lines 22A, 22B. It may be.
  • each antenna pattern 201 is arranged so as to be spaced apart from each other at a predetermined pitch in the X-axis direction.
  • a plurality of ground patterns 202 are arranged at the position of the end portion 1a so as to extend in the X-axis direction.
  • the first side portion 24B for one of the antenna patterns 201 adjacent to each other corresponds to the second side portion 24C for the other antenna pattern 201 adjacent to each other.
  • the side portion between the first terminal pad portion 23A of one antenna pattern 201 and the second terminal pad portion 23B of the adjacent antenna pattern 201 on the negative side in the X-axis direction is It is commonly used as the side portion 24B and the second side portion 23C.
  • an antenna 200 shown in FIG. 8 may be employed.
  • An antenna 200 shown in FIG. 8 employs a radiation conductor 21 and feed lines 22A, 22B made of a solid planar conductor pattern 54 instead of the mesh-like radiation conductor 21 and feed lines 22A, 22B shown in FIG. It is something.
  • the other configuration of the antenna 200 shown in FIG. 8 is the same as that of the antenna 200 shown in FIG. 5.
  • the ground pattern 202 is arranged between the center portion 24A and the center portion 24A disposed between the first terminal pad portion 23A and the second terminal pad portion 23B.
  • a first side portion 24B is arranged to sandwich the first terminal pad portion 23A
  • a second side portion 24C is arranged to sandwich the second terminal pad portion 23B between the center portion 24A.
  • the ground pattern 202 includes a first connection portion 24D that connects the center portion 24A and the first side portion 24B, and a second connection portion 24E that connects the center portion 24A and the second side portion 24C. , has.
  • the first connecting portion 24D extends between the first terminal pad portion 23A and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1. .
  • the second connecting portion 24E extends between the second terminal pad portion 23B and the end portion 1a of the light-transmitting base material 1 on one main surface 1S of the light-transmitting base material 1. do.
  • the center of the ground pattern 202 is formed using the area between the terminal pad portions 23A, 23B and the end portion 1a of the light transmitting base material 1 on one main surface 1S of the light transmitting base material 1.
  • the portion 24A, the first side portion 24B, and the second side portion 23C can be electrically connected by the connecting portions 24D and 24E. As a result, each part of the ground pattern 202 is not electrically separated and is electrically connected, so that electrical stability in the ground pattern 202 can be ensured.
  • the ground pattern is shared on the other main surface of the base material (the main surface on the back side of the main surface 1S) (for example, Japanese Patent Publication No. 2021-518070).
  • a part of such a ground pattern is formed on the same main surface as the antenna pattern, goes around to the back side, and another part is provided on the back side of the antenna pattern.
  • the ground pattern needs to be configured with a mesh-like conductor pattern from the viewpoint of visibility, which reduces the stability of connection with the cable and causes moiré. may occur.
  • the ground pattern 202 and the antenna pattern 201 are shared on the same main surface 1S, so it is possible to reduce the manufacturing effort and cost. . Further, since the ground pattern 202 is arranged near the edge 1a of the substrate, visibility is not affected. Therefore, the ground pattern 202 can be formed of a planar conductor layer, and grounding stability can be improved. Moreover, since each part of the ground pattern 202 is connected near the terminal pad parts 23A and 23B, a large joint area with the cable can be taken, and connection reliability can be improved.
  • the width dimension L3 of the first connecting portion 24D and the second connecting portion 24E in the Y-axis direction perpendicular to the X-axis direction along the end portion 1a of the light-transmitting substrate 1 is the width dimension L3 of the first terminal in the Y-axis direction. It may be smaller than the width dimension L2 of the pad portion 23A and the second terminal pad portion 23B. In this case, the first connecting portion 24D and the second connecting portion 24E become thicker between the first terminal pad portion 23A and the second terminal pad portion 23B and the end portion 1a of the light-transmitting base material 1. You can prevent too much.
  • a plurality of antenna patterns 201 and ground patterns 202 are provided along the end portion 1a of the light-transmissive base material 1, and the first side portion 24B for one of the mutually adjacent antenna patterns 201 is a plurality of the antenna patterns 201 and the ground pattern 202. 201 may correspond to the second side 24C relative to the other side.
  • the ground patterns 202 for each antenna pattern 201 can be electrically connected to each other. Thereby, electrical stability in the ground pattern 202 can be ensured.
  • the conductor thickness of the ground pattern 202 may be thicker than the thickness of the radiation conductor 21 of the antenna pattern 201, the first feed line 22A, and the second feed line 22B. In this case, since the amount of conductors in the ground pattern 202 increases, grounding stability can be improved.
  • a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1, and the first terminal pad section 23A and the second terminal pad section 23B are a conductive layer having a conductive pattern including a plurality of openings. and a first planar conductor layer 71 disposed on the conductor layer, and the ground pattern 202 has a second planar conductor layer 72 disposed on the resin layer 7. You may do so. In this case, the amount of conductor used in the ground pattern 202 can be reduced, and good connection with external terminals can be achieved.
  • a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1, and the first terminal pad section 23A, the second terminal pad section 23B, and the ground pattern 202 are made of a conductor including a plurality of openings. It may include a conductor layer having a pattern and a first planar conductor layer 71 disposed on the conductor layer. In this case, the ground pattern 202 can be created by using a mesh conductor pattern.
  • the thickness of the first planar conductor layer 71 may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
  • the thickness of the second planar conductor layer 72 may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
  • the conductor layer may be a mesh conductor layer 70 provided in a mesh-like trench of the resin layer 7.
  • the mesh conductor layer 70 can be fabricated by using the mesh conductor pattern.
  • the display device 100 includes the antenna 200 described above.
  • a mesh conductor layer is exemplified as a conductor layer having a conductor pattern including openings.
  • the conductor pattern including openings is not limited to the mesh, and a conductor pattern including honeycomb-shaped openings or a conductor pattern including dot-shaped openings may be employed.
  • the technology according to the present disclosure includes, but is not limited to, the following configuration examples.
  • An antenna includes a base material, an antenna pattern configured of a conductor pattern arranged on one main surface of the base material, and a conductor pattern arranged on one main surface of the base material.
  • the antenna pattern includes a radiation conductor, a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed the radiation conductor. It has a line, and a first terminal and a second terminal connected to the first feed line and the second feed line, respectively, and the ground pattern is between the first terminal and the second terminal. a first side portion arranged to sandwich the first terminal between the center portion; and a first side portion arranged to sandwich the second terminal between the center portion.
  • first connecting portion connecting the central portion and the first side portion; and a second connecting portion connecting the central portion and the second side portion;
  • the connecting portion extends between the first terminal and the end of the base material on one main surface of the base material, and the second connecting portion extends on one main surface of the base material. , extending between the second terminal and the end of the substrate.
  • the ground pattern includes a central portion disposed between the first terminal and the second terminal, and a first ground pattern disposed such that the first terminal is sandwiched between the central portion. and a second side portion arranged to sandwich the second terminal between the center portion and the second side portion. Further, the ground pattern has a first connection portion that connects the center portion and the first side portion, and a second connection portion that connects the center portion and the second side portion.
  • the first connection portion extends between the first terminal and the end of the base on one main surface of the base. Further, the second connection portion extends between the second terminal and the end of the base material on one main surface of the base material.
  • the center, first side, and second side of the ground pattern are connected using the area between the terminal and the end of the base on one main surface of the base. It can be electrically connected by the part. As a result, each part of the ground pattern is not electrically separated and is electrically connected, so that electrical stability in the ground pattern can be ensured.
  • the width dimension of the first connection part and the second connection part in the second direction perpendicular to the first direction along the edge of the base material is the width of the first terminal and the second terminal in the second direction. It may be smaller than the width dimension of. In this case, it is possible to prevent the first connection portion and the second connection portion from becoming too thick between the first terminal and the second terminal and the end portion of the base material.
  • a plurality of antenna patterns and ground patterns are provided along the edge of the base material, and a first side of one of the adjacent antenna patterns is a second side of the other of the adjacent antenna patterns. This may apply.
  • the ground patterns for each antenna pattern can be electrically connected to each other. Thereby, electrical stability in the ground pattern can be ensured.
  • the conductor thickness of the ground pattern may be thicker than the thickness of the radiation conductor of the antenna pattern, the first feed line, and the second feed line. In this case, since the amount of conductors in the ground pattern increases, grounding stability can be improved.
  • a resin layer is disposed on one main surface of the base material, and the first terminal and the second terminal include a conductor layer having a conductor pattern including a plurality of openings, and a planar resin layer disposed on the conductor layer.
  • the ground pattern may include a second planar conductor layer disposed on the resin layer. In this case, the amount of conductor used in the ground pattern can be reduced, and good connection with external terminals can be achieved.
  • a resin layer is disposed on one main surface of the base material, and the first terminal, the second terminal, and the ground pattern are disposed on the conductor layer and the conductor layer having a conductor pattern including a plurality of openings.
  • the ground pattern can be created by using the mesh conductor pattern.
  • the thickness of the first planar conductor layer may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
  • the thickness of the second planar conductor layer may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
  • the conductor layer may be a mesh conductor layer provided in a mesh-like trench in the resin layer.
  • the mesh conductor layer can be fabricated by using the mesh conductor pattern.
  • a display device includes the above-described antenna.
  • the antenna pattern is a radiating conductor; a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed power to the radiation conductor; a first terminal and a second terminal connected to the first feed line and the second feed line, respectively;
  • the ground pattern is a central portion disposed between the first terminal and the second terminal; a first side portion arranged to sandwich the first terminal between the first side portion and the center portion; a second side portion arranged to sandwich the second terminal between the second side portion and the center portion; a first connecting portion connecting the central portion and the first side portion; a second connecting part connecting the central part and the second side part,
  • the first connecting portion extends between the first terminal and the end of the base on the one main surface of the base,
  • the second connecting portion is
  • the width dimension of the first connection part and the second connection part in the second direction perpendicular to the first direction along the end of the base material is equal to the width of the first connection part in the second direction.
  • the antenna according to Form 1 wherein the antenna is smaller than a width dimension of the terminal and the second terminal.
  • a plurality of the antenna patterns and the ground pattern are arranged along the edge of the base material, The antenna according to form 1 or 2, wherein the first side portion of one of the antenna patterns adjacent to each other corresponds to the second side portion of the other of the antenna patterns adjacent to each other.
  • a resin layer is arranged on the one main surface of the base material, The first terminal and the second terminal include a conductor layer having a conductor pattern including a plurality of openings, and a flat first planar conductor layer disposed on the conductor layer, 5.
  • a resin layer is arranged on the one main surface of the base material,
  • the first terminal, the second terminal, and the ground pattern each include a conductor layer having a conductor pattern including a plurality of openings, and a planar first planar conductor layer disposed on the conductor layer.

Abstract

In the present invention, an antenna pattern has: a radiation conductor; a first power feed line and a second power feed line that are drawn out from the radiation conductor to an end part side of a substrate and that feed power to the radiation conductor; and a first terminal and a second terminal respectively connected to the first power feed line and the second power feed line. A ground pattern has: a center part disposed between the first terminal and the second terminal; a first lateral part disposed so as to sandwich the first terminal between the first lateral part and the center part; a second lateral part disposed so as to sandwich the second terminal between the second lateral part and the center part; a first connection part for connecting the center part and the first lateral part to each other; and a second connection part for connecting the center part and the second lateral part to each other. The first connection part extends between the first terminal and the end part of the substrate, on one main surface of the substrate. The second connection part extends between the second terminal and the end part of the substrate, on the one main surface of the substrate.

Description

アンテナ、及び表示装置Antenna and display device
　本開示は、アンテナ、及び表示装置に関する。 The present disclosure relates to an antenna and a display device.
　従来、放射パターンと、放射パターンに接続された給電用の伝送ラインと、を備えるアンテナが知られている（例えば、特許文献１）。このアンテナにおいて、伝送ラインの放射パターンとの反対側の端部側にはグラウンドのパッド部が形成される。 Conventionally, an antenna including a radiation pattern and a power feeding transmission line connected to the radiation pattern is known (for example, Patent Document 1). In this antenna, a ground pad portion is formed at the end of the transmission line opposite to the radiation pattern.
特表２０２１－５０１５３９号Special table number 2021-501539
　ここで、上述のようなアンテナにおいては、複数のアンテナが並べられる場合、グラウンドのパッド部はアンテナごとに分離された状態で配置される。このようなアンテナにおいては、電気的安定性を確保することが求められていた。 Here, in the antennas as described above, when a plurality of antennas are arranged in a row, the ground pad portions are arranged separately for each antenna. Such antennas are required to ensure electrical stability.
　そこで、本開示は、電気的安定性を確保できるアンテナ、及び表示装置を提供することを目的とする。 Therefore, an object of the present disclosure is to provide an antenna and a display device that can ensure electrical stability.
　本開示の一側面に係るアンテナは、基材と、基材の一方の主面上に配置される導体パターンで構成されるアンテナパターンと、基材の一方の主面上に配置される導体パターンで構成されるグラウンドパターンと、を備え、アンテナパターンは、放射導体と、放射導体から基材の端部側へ向かって引き出され、放射導体に給電を行う第１の給電線路及び第２の給電線路と、第１の給電線路及び第２の給電線路にそれぞれ接続される第１の端子及び第２の端子と、を有し、グラウンドパターンは、第１の端子と第２の端子との間に配置される中央部と、中央部との間で第１の端子を挟むように配置される第１の側部と、中央部との間で第２の端子を挟むように配置される第２の側部と、中央部と第１の側部とを接続する第１の接続部と、中央部と第２の側部とを接続する第２の接続部と、を有し、第１の接続部は、基材の一方の主面上において、第１の端子と基材の端部との間にて延在し、第２の接続部は、基材の一方の主面上において、第２の端子と基材の端部との間にて延在する。 An antenna according to one aspect of the present disclosure includes a base material, an antenna pattern configured of a conductor pattern arranged on one main surface of the base material, and a conductor pattern arranged on one main surface of the base material. The antenna pattern includes a radiation conductor, a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed the radiation conductor. It has a line, and a first terminal and a second terminal connected to the first feed line and the second feed line, respectively, and the ground pattern is between the first terminal and the second terminal. a first side portion arranged to sandwich the first terminal between the center portion; and a first side portion arranged to sandwich the second terminal between the center portion. a first connecting portion connecting the central portion and the first side portion; and a second connecting portion connecting the central portion and the second side portion; The connecting portion extends between the first terminal and the end of the base material on one main surface of the base material, and the second connecting portion extends on one main surface of the base material. , extending between the second terminal and the end of the substrate.
　本開示の一側面に係る表示装置は、上述のアンテナを備える。 A display device according to one aspect of the present disclosure includes the above-described antenna.
　本開示の一側面によれば、電気的安定性を確保できるアンテナ、及び表示装置を提供することができる。 According to one aspect of the present disclosure, it is possible to provide an antenna and a display device that can ensure electrical stability.
アンテナを備える導電性フィルムの一実施形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of a conductive film including an antenna. 図１のＩＩ－ＩＩ線に沿う断面図である。2 is a sectional view taken along line II-II in FIG. 1. FIG. 変形例に係るアンテナを示す断面図である。FIG. 7 is a cross-sectional view showing an antenna according to a modification. 表示装置の一実施形態を示す断面図である。FIG. 1 is a cross-sectional view showing an embodiment of a display device. アンテナの平面図である。FIG. 3 is a plan view of the antenna. 図５のＶＩ－ＶＩ線に沿った断面図である。6 is a sectional view taken along line VI-VI in FIG. 5. FIG. アンテナパターン及びグラウンドパターンを複数並べたアンテナである。This is an antenna with a plurality of antenna patterns and ground patterns lined up. 変形例に係るアンテナの平面図である。FIG. 7 is a plan view of an antenna according to a modified example.
　以下、本開示のいくつかの実施形態について詳細に説明する。ただし、本開示は以下の実施形態に限定されるものではない。 Hereinafter, several embodiments of the present disclosure will be described in detail. However, the present disclosure is not limited to the following embodiments.
　図１は本開示の一実施形態に係るアンテナを備える導電性フィルムを示す平面図であり、図２は図１のＩＩ－ＩＩ線に沿う断面図である。図１及び図２に示される導電性フィルム２０は、フィルム状の光透過性基材１（基材）と、光透過性基材１の一方の主面１Ｓ上に設けられた導電性層５と、光透過性基材１の一方の主面１Ｓ上に設けられた光透過性樹脂層７Ｂとを備える。導電性層５は、光透過性基材１の主面１Ｓに沿った方向に延在し複数の開口３ａを含むパターンを有する部分を含む導体部３と、導体部３の開口３ａ内を埋める絶縁樹脂部７Ａとを有する。図２では、導電性層５がデフォルメされた状態で示されており、導体部３の幅が強調された状態で示されている。また、各層の厚みもデフォルメされた状態で示されている。各層の厚みの詳細については後述する。また、図１に示す例では、導電性フィルム２０の一方の短辺付近に導電性層５が形成されているが、導電性層５が形成される位置は特に限定されず、長辺付近に導電性層５が形成されてもよい。 FIG. 1 is a plan view showing a conductive film including an antenna according to an embodiment of the present disclosure, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. The conductive film 20 shown in FIGS. 1 and 2 includes a film-like light-transmitting base material 1 (base material) and a conductive layer 5 provided on one main surface 1S of the light-transmitting base material 1. and a light-transparent resin layer 7B provided on one main surface 1S of the light-transparent base material 1. The conductive layer 5 includes a conductor portion 3 including a portion having a pattern that extends in a direction along the main surface 1S of the light-transmitting substrate 1 and includes a plurality of openings 3a, and fills the inside of the opening 3a of the conductor portion 3. It has an insulating resin part 7A. In FIG. 2, the conductive layer 5 is shown in a deformed state, and the width of the conductor portion 3 is shown in an emphasized state. The thickness of each layer is also shown in a deformed state. Details of the thickness of each layer will be described later. Further, in the example shown in FIG. 1, the conductive layer 5 is formed near one short side of the conductive film 20, but the position where the conductive layer 5 is formed is not particularly limited, and is formed near the long side. A conductive layer 5 may also be formed.
　光透過性基材１は、導電性フィルム２０が表示装置に組み込まれたときに必要とされる程度の光透過性を有する。具体的には、光透過性基材１の全光線透過率が９０～１００％であってもよい。光透過性基材１のヘイズが０～５％であってもよい。 The light-transmitting base material 1 has a level of light-transmitting property required when the conductive film 20 is incorporated into a display device. Specifically, the total light transmittance of the light-transmitting substrate 1 may be 90 to 100%. The haze of the light-transmitting substrate 1 may be 0 to 5%.
　光透過性基材１は、例えば透明樹脂フィルムであってもよく、その例としては、ポリエチレンテレフタレート（ＰＥＴ）、ポリカーボネート（ＰＣ）、ポリエチレンナフタレート（ＰＥＮ）、シクロオレフィンポリマー（ＣＯＰ）、又はポリイミド（ＰＩ）のフィルムが挙げられる。あるいは、光透過性基材１がガラス基板であってもよい。 The light-transmitting substrate 1 may be, for example, a transparent resin film, and examples thereof include polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), cycloolefin polymer (COP), or polyimide. (PI) film is mentioned. Alternatively, the light-transmissive base material 1 may be a glass substrate.
　例えば図３に示すように、光透過性基材１は、光透過性の支持フィルム１１と、支持フィルム１１上に順に設けられた中間樹脂層１２及び下地層１３とを有する積層体であってもよい。支持フィルム１１は上記透明樹脂フィルムであることができる。下地層１３は無電解めっき等によって導体部３を形成するために設けられる層である。他の方法によって導体部３を形成する場合、下地層１３は必ずしも設けられなくてもよい。支持フィルム１１と下地層１３との間に中間樹脂層１２が設けられていなくてもよい。 For example, as shown in FIG. 3, the light-transmitting substrate 1 is a laminate including a light-transmitting support film 11, and an intermediate resin layer 12 and a base layer 13 provided in this order on the support film 11. Good too. The support film 11 may be the transparent resin film described above. The base layer 13 is a layer provided to form the conductor portion 3 by electroless plating or the like. When forming the conductor portion 3 by another method, the base layer 13 does not necessarily need to be provided. The intermediate resin layer 12 may not be provided between the support film 11 and the base layer 13.
　光透過性基材１又はこれを構成する支持フィルム１１の厚みは、１０μｍ以上、２０μｍ以上、又は３５μｍ以上であってよく、５００μｍ以下、２００μｍ以下、又は１００μｍ以下であってよい。 The thickness of the light-transmitting substrate 1 or the support film 11 constituting it may be 10 μm or more, 20 μm or more, or 35 μm or more, and may be 500 μm or less, 200 μm or less, or 100 μm or less.
　中間樹脂層１２が設けられることにより、支持フィルム１１と下地層１３との間の密着性が向上し得る。下地層１３が設けられない場合、中間樹脂層１２が支持フィルム１１と光透過性樹脂層７Ｂとの間に設けられることにより、支持フィルム１１と光透過性樹脂層７Ｂとの間の密着性が向上し得る。 By providing the intermediate resin layer 12, the adhesion between the support film 11 and the base layer 13 can be improved. When the base layer 13 is not provided, the intermediate resin layer 12 is provided between the support film 11 and the light-transparent resin layer 7B, thereby improving the adhesion between the support film 11 and the light-transparent resin layer 7B. It can be improved.
　中間樹脂層１２は、樹脂及び無機フィラーを含有する層であってもよい。中間樹脂層１２を構成する樹脂の例としては、アクリル樹脂が挙げられる。無機フィラーの例としては、シリカが挙げられる。 The intermediate resin layer 12 may be a layer containing a resin and an inorganic filler. An example of the resin constituting the intermediate resin layer 12 is acrylic resin. An example of an inorganic filler is silica.
　中間樹脂層１２の厚みは、例えば５ｎｍ以上、１００ｎｍ以上、又は２００ｎｍ以上であってもよく、１０μｍ以下、５μｍ以下、又は２μｍ以下であってもよい。 The thickness of the intermediate resin layer 12 may be, for example, 5 nm or more, 100 nm or more, or 200 nm or more, or 10 μm or less, 5 μm or less, or 2 μm or less.
　下地層１３は、触媒及び樹脂を含有する層であってもよい。樹脂は、硬化性樹脂組成物の硬化物であってもよい。硬化性樹脂組成物に含まれる硬化性樹脂の例としては、アミノ樹脂、シアネート樹脂、イソシアネート樹脂、ポリイミド樹脂、エポキシ樹脂、オキセタン樹脂、ポリエステル、アリル樹脂、フェノール樹脂、ベンゾオキサジン樹脂、キシレン樹脂、ケトン樹脂、フラン樹脂、ＣＯＰＮＡ樹脂、ケイ素樹脂、ジクロペンタジエン樹脂、ベンゾシクロブテン樹脂、エピスルフィド樹脂、エン－チオール樹脂、ポリアゾメチン樹脂、ポリビニルベンジルエーテル化合物、アセナフチレン、並びに、不飽和二重結合、環状エーテル、及びビニルエーテル等の紫外線で重合反応を起こす官能基を含む紫外線硬化樹脂が挙げられる。 The base layer 13 may be a layer containing a catalyst and a resin. The resin may be a cured product of a curable resin composition. Examples of curable resins contained in the curable resin composition include amino resins, cyanate resins, isocyanate resins, polyimide resins, epoxy resins, oxetane resins, polyesters, allyl resins, phenolic resins, benzoxazine resins, xylene resins, and ketones. Resin, furan resin, COPNA resin, silicone resin, dichloropentadiene resin, benzocyclobutene resin, episulfide resin, ene-thiol resin, polyazomethine resin, polyvinylbenzyl ether compound, acenaphthylene, as well as unsaturated double bond, cyclic ether, and ultraviolet curing resins containing a functional group that causes a polymerization reaction with ultraviolet light, such as vinyl ether.
　下地層１３に含まれる触媒は、無電解めっき触媒であってもよい。無電解めっき触媒は、Ｐｄ、Ｃｕ、Ｎｉ、Ｃｏ、Ａｕ、Ａｇ、Ｐｄ、Ｒｈ、Ｐｔ、Ｉｎ、及びＳｎから選ばれる金属であってもよく、Ｐｄであってもよい。触媒は、１種類単独若しくは２種類以上の組合せであってもよい。通常、触媒は触媒粒子として樹脂中に分散している。 The catalyst included in the base layer 13 may be an electroless plating catalyst. The electroless plating catalyst may be a metal selected from Pd, Cu, Ni, Co, Au, Ag, Pd, Rh, Pt, In, and Sn, or may be Pd. The catalyst may be used alone or in combination of two or more types. Typically, the catalyst is dispersed in the resin as catalyst particles.
　下地層１３における触媒の含有量は、下地層１３全量を基準として、３質量％以上、４質量％以上、又は５質量％以上であってもよく、５０質量％以下、４０質量％以下、又は２５質量％以下であってもよい。 The content of the catalyst in the base layer 13 may be 3% by mass or more, 4% by mass or more, or 5% by mass or more, and 50% by mass or less, 40% by mass or less, or It may be 25% by mass or less.
　下地層１３の厚みは、１０ｎｍ以上、２０ｎｍ以上、又は３０ｎｍ以上であってもよく、５００ｎｍ以下、３００ｎｍ以下、又は１５０ｎｍ以下であってもよい。 The thickness of the base layer 13 may be 10 nm or more, 20 nm or more, or 30 nm or more, and may be 500 nm or less, 300 nm or less, or 150 nm or less.
　光透過性基材１は、支持フィルム１１の光透過性樹脂層７Ｂ及び導体部３とは反対側の主面上に設けられた保護層を更に有していてもよい。保護層が設けられることにより、支持フィルム１１の傷付きが抑制される。保護層は、中間樹脂層１２と同様の層であることができる。保護層の厚みは、５ｎｍ以上、５０ｎｍ以上、又は５００ｎｍ以上であってもよく、１０μｍ以下、５μｍ以下、又は２μｍ以下であってもよい。 The light-transmitting base material 1 may further include a protective layer provided on the main surface of the support film 11 on the opposite side to the light-transmitting resin layer 7B and the conductor portion 3. By providing the protective layer, damage to the support film 11 is suppressed. The protective layer can be a layer similar to the intermediate resin layer 12. The thickness of the protective layer may be 5 nm or more, 50 nm or more, or 500 nm or more, and may be 10 μm or less, 5 μm or less, or 2 μm or less.
　導電性層５を構成する導体部３は、開口３ａを含むパターンを有する部分を含む。開口３ａを含むパターンは、互いに交差する複数の線状部によって形成された、規則的に配置された複数の開口３ａを含むメッシュ状のパターンを備える。メッシュ状のパターンを有する導体部３は、後述のアンテナ２００の放射導体及び給電線路として機能する。また、導体部３は、開口３ａを有さないべた塗りの平面状のパターン、またはメッシュ状のパターンの上にべた塗りの平面状のパターンを組み合わせたパターンを備える。平面状のパターンを有する導体部３は、後述の端子パッド部及びグラウンドパターンとして機能する。なお、導電性層５における導体部３のパターンの構成の詳細については後述する。 The conductor portion 3 constituting the conductive layer 5 includes a portion having a pattern including an opening 3a. The pattern including the openings 3a includes a mesh pattern including a plurality of regularly arranged openings 3a formed by a plurality of linear portions that intersect with each other. The conductor portion 3 having a mesh-like pattern functions as a radiation conductor and a feed line of an antenna 200, which will be described later. Further, the conductor portion 3 includes a solid planar pattern without openings 3a, or a pattern that is a combination of a solid planar pattern on a mesh pattern. The conductor portion 3 having a planar pattern functions as a terminal pad portion and a ground pattern, which will be described later. Note that details of the structure of the pattern of the conductor portion 3 in the conductive layer 5 will be described later.
　導体部３は、金属を含んでいてもよい。導体部３は、銅、ニッケル、コバルト、パラジウム、銀、金、白金及びスズから選ばれる少なくとも１種の金属を含んでいてもよく、銅を含んでいてもよい。導体部３は、めっき法によって形成された金属めっきであってもよい。導体部３は、適切な導電性が維持される範囲で、リン等の非金属元素を更に含んでいてもよい。 The conductor portion 3 may contain metal. The conductor portion 3 may contain at least one metal selected from copper, nickel, cobalt, palladium, silver, gold, platinum, and tin, and may also contain copper. The conductor portion 3 may be metal plated by a plating method. The conductor portion 3 may further contain a nonmetallic element such as phosphorus within a range where appropriate conductivity is maintained.
　導体部３は、複数の層から構成される積層体であってもよい。また、導体部３は、光透過性基材１とは反対側の表層部として、黒化層を有していてもよい。黒化層は、導電性フィルムが組み込まれた表示装置の視認性向上に寄与し得る。 The conductor portion 3 may be a laminate composed of multiple layers. Further, the conductor portion 3 may have a blackened layer as a surface layer portion on the opposite side from the light-transmitting base material 1. The blackening layer can contribute to improving the visibility of a display device incorporating a conductive film.
　絶縁樹脂部７Ａは、光透過性を有する樹脂によって形成されており、導体部３の開口３ａを埋めるように設けられており、通常、絶縁樹脂部７Ａと導体部３とで平坦な表面が形成されている。 The insulating resin part 7A is made of a resin having light transmittance, and is provided to fill the opening 3a of the conductor part 3. Usually, the insulating resin part 7A and the conductor part 3 form a flat surface. has been done.
　光透過性樹脂層７Ｂは、光透過性を有する樹脂によって形成されている。光透過性樹脂層７Ｂの全光線透過率が９０～１００％であってもよい。光透過性樹脂層７Ｂのヘイズが０～５％であってもよい。 The light-transmitting resin layer 7B is formed of a resin having light-transmitting properties. The total light transmittance of the light-transmitting resin layer 7B may be 90 to 100%. The haze of the light-transmitting resin layer 7B may be 0 to 5%.
　光透過性基材１（又は光透過性基材１を構成する支持フィルムの屈折率）と、光透過性樹脂層７Ｂの屈折率との差が０．１以下であってもよい。これにより、表示画像の良好な視認性がより一層確保され易い。光透過性樹脂層７Ｂの屈折率（ｎｄ２５）は、例えば、１．０以上であってもよく、１．７以下、１．６以下、又は１．５以下であってよい。屈折率は、反射分光膜厚計により測定することができる。光路長の均一性の観点から、導体部３、絶縁樹脂部７Ａ、及び光透過性樹脂層７Ｂが実質的に同じ厚みを有していてもよい。 The difference between the refractive index of the light-transmissive base material 1 (or the refractive index of the support film constituting the light-transparent base material 1) and the refractive index of the light-transparent resin layer 7B may be 0.1 or less. This makes it easier to ensure good visibility of the displayed image. The refractive index (nd25) of the light-transmitting resin layer 7B may be, for example, 1.0 or more, 1.7 or less, 1.6 or less, or 1.5 or less. The refractive index can be measured using a reflection spectroscopic film thickness meter. From the viewpoint of uniformity of optical path length, the conductor portion 3, the insulating resin portion 7A, and the light-transmitting resin layer 7B may have substantially the same thickness.
　絶縁樹脂部７Ａ及び光透過性樹脂層７Ｂを形成する樹脂は、硬化性樹脂組成物（光硬化性樹脂組成物又は熱硬化性樹脂組成物）の硬化物であってもよい。絶縁樹脂部７Ａ及び／又は光透過性樹脂層７Ｂを形成する硬化性樹脂組成物は、硬化性樹脂を含み、その例としては、アクリル樹脂、アミノ樹脂、シアネート樹脂、イソシアネート樹脂、ポリイミド樹脂、エポキシ樹脂、オキセタン樹脂、ポリエステル、アリル樹脂、フェノール樹脂、ベンゾオキサジン樹脂、キシレン樹脂、ケトン樹脂、フラン樹脂、ＣＯＰＮＡ樹脂、ケイ素樹脂、ジクロペンタジエン樹脂、ベンゾシクロブテン樹脂、エピスルフィド樹脂、エン－チオール樹脂、ポリアゾメチン樹脂、ポリビニルベンジルエーテル化合物、アセナフチレン、及び不飽和二重結合、並びに、環状エーテル、ビニルエーテル等の紫外線で重合反応を起こす官能基を含む紫外線硬化樹脂が挙げられる。 The resin forming the insulating resin portion 7A and the light-transmitting resin layer 7B may be a cured product of a curable resin composition (a photocurable resin composition or a thermosetting resin composition). The curable resin composition forming the insulating resin portion 7A and/or the light-transmitting resin layer 7B includes a curable resin, and examples thereof include acrylic resin, amino resin, cyanate resin, isocyanate resin, polyimide resin, and epoxy resin. Resin, oxetane resin, polyester, allyl resin, phenolic resin, benzoxazine resin, xylene resin, ketone resin, furan resin, COPNA resin, silicon resin, dichloropentadiene resin, benzocyclobutene resin, episulfide resin, ene-thiol resin, poly Examples include azomethine resin, polyvinylbenzyl ether compound, acenaphthylene, and ultraviolet curable resins containing functional groups that cause a polymerization reaction with ultraviolet rays, such as unsaturated double bonds, cyclic ethers, and vinyl ethers.
　絶縁樹脂部７Ａを形成する樹脂と光透過性樹脂層７Ｂを形成する樹脂とが同じであってもよい。同じ樹脂によって形成された絶縁樹脂部７Ａ及び光透過性樹脂層７Ｂは屈折率が等しいことから、導電性フィルム２０を透過する光路長の均一性がより一層向上することができる。絶縁樹脂部７Ａを形成する樹脂と光透過性樹脂層７Ｂを形成する樹脂とが同じである場合、例えば１層の硬化性樹脂層からインプリント法等によってパターン形成することによって、絶縁樹脂部７Ａ及び光透過性樹脂層７Ｂを容易に一括して形成することができる。 The resin forming the insulating resin portion 7A and the resin forming the light-transmitting resin layer 7B may be the same. Since the insulating resin portion 7A and the light-transmitting resin layer 7B made of the same resin have the same refractive index, the uniformity of the optical path length passing through the conductive film 20 can be further improved. When the resin forming the insulating resin portion 7A and the resin forming the light-transmitting resin layer 7B are the same, the insulating resin portion 7A can be formed by forming a pattern from one curable resin layer by imprinting or the like, for example. and the light-transmitting resin layer 7B can be easily formed all at once.
　導電性フィルム２０は、例えばインプリント法によるパターン形成を含む方法によって製造することができる。導電性フィルム２０を製造する方法の一例は、支持フィルムと支持フィルムの一方の主面上に設けられた、中間樹脂層及び触媒を含有する下地層とを有する光透過性基材１を準備することと、光透過性基材１の下地層側の主面１Ｓ上に、硬化性樹脂層を形成させることと、凸部を有するモールドを用いたインプリント法により、下地層が露出するトレンチを形成させることと、トレンチを充填する導体部３を、下地層から金属めっきを成長させる無電解めっき法により形成することとを含む。硬化性樹脂層にモールドが押し込まれた状態で硬化性樹脂層を硬化させることにより、モールドの凸部の反転形状を有する開口を含むパターンを有する絶縁樹脂部７Ａと光透過性樹脂層７Ｂとが一括して形成される。開口を含むパターンを有する絶縁樹脂部７Ａを形成する方法は、インプリント法に限られず、フォトリソグラフィー等の任意の方法を適用できる。 The conductive film 20 can be manufactured, for example, by a method including pattern formation using an imprint method. An example of a method for manufacturing the conductive film 20 is to prepare a light-transmitting base material 1 having a support film and a base layer containing an intermediate resin layer and a catalyst provided on one main surface of the support film. In addition, a curable resin layer is formed on the main surface 1S of the light-transmitting substrate 1 on the base layer side, and a trench in which the base layer is exposed is formed by an imprint method using a mold having a convex portion. and forming the conductor portion 3 filling the trench by an electroless plating method in which metal plating is grown from a base layer. By curing the curable resin layer with the mold pushed into the curable resin layer, the insulating resin part 7A and the light-transmitting resin layer 7B having a pattern including openings having an inverted shape of the convex parts of the mold are formed. Formed all at once. The method for forming the insulating resin portion 7A having a pattern including openings is not limited to the imprint method, and any method such as photolithography can be applied.
　以上例示的に説明された導電性フィルムを、平面状の透明のアンテナ２００として表示装置に組み込むことができる。表示装置は、例えば、液晶表示装置、又は有機ＥＬ表示装置であってもよい。図４は、導電性フィルムが組み込まれた表示装置の一実施形態を示す断面図である。図４に示される表示装置１００は、画像表示領域１０Ｓを有する画像表示部１０と、誘電体層１５と、導電性フィルム２０（アンテナ２００）と、偏光板３０と、カバーガラス４０とを備える。ここでは、画像表示部１０は、導電性フィルム２０のアンテナ２００に対するグラウンド導体として機能する。これにより、平面状の透明のアンテナ２００は、パッチアンテナの構成となる。誘電体層１５、導電性フィルム２０、偏光板３０、及びカバーガラス４０は、画像表示部１０の画像表示領域１０Ｓ側において、画像表示部１０側からこの順に積層されている。表示装置の構成は図４の形態に限られず、必要により適宜変更が可能である。例えば、偏光板３０が画像表示部１０と導電性フィルム２０との間に設けられてもよい。画像表示部１０は、例えば液晶表示部であってもよい。偏光板３０及びカバーガラス４０として、表示装置において通常用いられているものを用いることができる。偏光板３０及びカバーガラス４０は、必ずしも設けられなくてもよい。画像表示部１０の画像表示領域１０Ｓから出射される画像表示のための光が、導電性フィルム２０を含む均一性の高い光路長の経路を通過する。これにより、モワレが抑制された均一性の高い良好な画像表示が可能である。 The conductive film exemplified above can be incorporated into a display device as a planar transparent antenna 200. The display device may be, for example, a liquid crystal display device or an organic EL display device. FIG. 4 is a cross-sectional view showing one embodiment of a display device incorporating a conductive film. The display device 100 shown in FIG. 4 includes an image display section 10 having an image display area 10S, a dielectric layer 15, a conductive film 20 (antenna 200), a polarizing plate 30, and a cover glass 40. Here, the image display section 10 functions as a ground conductor for the antenna 200 of the conductive film 20. Thereby, the planar transparent antenna 200 has a configuration of a patch antenna. The dielectric layer 15, the conductive film 20, the polarizing plate 30, and the cover glass 40 are laminated in this order from the image display section 10 side on the image display area 10S side of the image display section 10. The configuration of the display device is not limited to the form shown in FIG. 4, and can be modified as necessary. For example, the polarizing plate 30 may be provided between the image display section 10 and the conductive film 20. The image display section 10 may be, for example, a liquid crystal display section. As the polarizing plate 30 and the cover glass 40, those commonly used in display devices can be used. The polarizing plate 30 and the cover glass 40 do not necessarily need to be provided. Light for image display emitted from the image display area 10S of the image display section 10 passes through a path including the conductive film 20 and having a highly uniform optical path length. Thereby, it is possible to display a good image with high uniformity in which moire is suppressed.
　次に、図５を参照して、本開示の実施形態に係るアンテナ２００の構成について詳細に説明する。アンテナ２００は、前述の導電性層５を含んで構成される。図５は、アンテナ２００の平面図である。図５は、アンテナの一部を拡大して示している。なお、以降の説明においては、主面１Ｓと平行な平面に対してＸＹ座標を設定して、説明を行うものとする。Ｘ軸方向は、主面１Ｓと平行な方向であり、光透過性基材１の端部１ａに沿う方向である。Ｙ軸方向は、主面１Ｓと平行な方向であり、Ｘ軸方向に直交する方向である。導電性フィルム２０の中央側をＹ軸方向の正側とし、導電性フィルム２０の外周側をＹ軸方向の負側とする。Ｘ軸方向は、主面１Ｓに沿ってＹ軸方向と直交する方向であり、端部１ａが延びる一方側をＸ軸方向の正側とし、他方側をＸ軸方向の負側とする。 Next, with reference to FIG. 5, the configuration of the antenna 200 according to the embodiment of the present disclosure will be described in detail. Antenna 200 includes the conductive layer 5 described above. FIG. 5 is a plan view of antenna 200. FIG. 5 shows an enlarged portion of the antenna. Note that in the following description, the XY coordinates are set on a plane parallel to the main surface 1S. The X-axis direction is a direction parallel to the main surface 1S, and a direction along the end 1a of the light-transmitting base material 1. The Y-axis direction is a direction parallel to the main surface 1S and perpendicular to the X-axis direction. The center side of the conductive film 20 is defined as the positive side in the Y-axis direction, and the outer peripheral side of the conductive film 20 is defined as the negative side in the Y-axis direction. The X-axis direction is a direction perpendicular to the Y-axis direction along the main surface 1S, and one side on which the end portion 1a extends is defined as the positive side in the X-axis direction, and the other side is defined as the negative side in the X-axis direction.
　アンテナ２００の導電性層５は、アンテナパターン２０１と、グラウンドパターン２０２と、を備える。アンテナパターン２０１は、光透過性基材１の一方の主面１Ｓ上に配置される導体パターンで構成されるパターンである。グラウンドパターン２０２は、光透過性基材１の一方の主面１Ｓ上に配置される導体パターンで構成されるパターンである。アンテナパターン２０１は、放射導体２１と、第１の給電線路２２Ａと、第２の給電線路２２Ｂと、第１の端子パッド部２３Ａ（第１の端子）と、第２の端子パッド部２３Ｂ（第２の端子）と、を有する。グラウンドパターン２０２は、中央部２４Ａと、第１の側部２４Ｂと、第２の側部２４Ｃと、第１の接続部２４Ｄと、第２の接続部２４Ｅと、を有する。アンテナ２００は、Ｙ軸方向に平行な中心線ＣＬに対して線対称な構成を有する。 The conductive layer 5 of the antenna 200 includes an antenna pattern 201 and a ground pattern 202. The antenna pattern 201 is a pattern composed of a conductive pattern arranged on one main surface 1S of the light-transmissive base material 1. The ground pattern 202 is a pattern composed of a conductor pattern arranged on one main surface 1S of the light-transmissive base material 1. The antenna pattern 201 includes a radiation conductor 21, a first feed line 22A, a second feed line 22B, a first terminal pad part 23A (first terminal), and a second terminal pad part 23B (first terminal). 2 terminals). The ground pattern 202 has a center portion 24A, a first side portion 24B, a second side portion 24C, a first connection portion 24D, and a second connection portion 24E. The antenna 200 has a configuration that is axisymmetric with respect to a center line CL that is parallel to the Y-axis direction.
　放射導体２１は、アンテナとして信号を放射する領域である。放射導体２１は、円形状の形状を有する。放射導体２１の中心は、中心線ＣＬ上に配置される。放射導体２１は、光透過性基材１の端部１ａからＹ軸方向の正側へ離間した位置に配置される。放射導体２１は、直径Ｒの寸法を有する。なお、放射導体２１は、円形状の形状である必要はなく、長方形状の形状や正方形状の形状であっても構わず、長方形又は正方形以外の多角形状の形状であっても構わない。 The radiation conductor 21 is a region that radiates signals as an antenna. The radiation conductor 21 has a circular shape. The center of the radiation conductor 21 is placed on the center line CL. The radiation conductor 21 is arranged at a position spaced apart from the end portion 1a of the light-transmitting substrate 1 toward the positive side in the Y-axis direction. The radiation conductor 21 has a diameter R. Note that the radiation conductor 21 does not need to have a circular shape, and may have a rectangular shape or a square shape, or may have a polygonal shape other than a rectangle or a square.
　給電線路２２Ａ，２２Ｂは、放射導体２１に給電を行う線路である。つまり、アンテナ２００は、２偏波アンテナとして機能する。例えば、第１の給電線路２２Ａの傾斜部２２ｂが延びる方向の斜め偏波信号を、第１の給電線路２２Ａを介して給電し、第２の給電線路２２Ｂの傾斜部２２ｂの延びる方向の斜め偏波信号を、第２の給電線路２２Ｂを介して給電することができる。給電線路２２Ａ，２２Ｂは、光透過性基材１の端部１ａに対して垂直に延びる垂直部２２ａと、Ｙ軸方向に対して傾斜する傾斜部２２ｂと、を有する。第１の給電線路２２Ａの垂直部２２ａは、光透過性基材１の端部１ａ側に形成された端子パッド部２３ＡからＹ軸方向の正側へ延びる。第１の給電線路２２Ａの垂直部２２ａは、中心線ＣＬからＸ軸方向の負側へ離間した位置にて、当該中心線ＣＬ（すなわちＹ軸方向）と平行に延びる。 The feed lines 22A and 22B are lines that feed power to the radiation conductor 21. In other words, antenna 200 functions as a dual polarization antenna. For example, a diagonally polarized signal in the direction in which the inclined portion 22b of the first feed line 22A extends is fed via the first feed line 22A, and a diagonally polarized signal in the direction in which the inclined portion 22b of the second feed line 22B extends. The wave signal can be fed via the second feed line 22B. The feed lines 22A, 22B have a vertical portion 22a extending perpendicularly to the end 1a of the light-transmissive base material 1, and an inclined portion 22b inclined with respect to the Y-axis direction. The vertical portion 22a of the first feed line 22A extends from the terminal pad portion 23A formed on the end portion 1a side of the light-transmitting substrate 1 toward the positive side in the Y-axis direction. The vertical portion 22a of the first feed line 22A extends parallel to the center line CL (ie, the Y-axis direction) at a position spaced apart from the center line CL on the negative side in the X-axis direction.
　第１の給電線路２２Ａの傾斜部２２ｂは、垂直部２２ａのＹ軸方向の正側の端部から、Ｙ軸方向の正側へ向かうに従って中心線ＣＬ側（すなわちＸ軸方向の正側）へ近付くように傾斜する。第１の給電線路２２Ａの傾斜部２２ｂのＹ軸方向の正側の端部は、放射導体２１の外周縁２１ａに接続される。第１の給電線路２２Ａは、垂直部２２ａ及び傾斜部２２ｂにおいて一定の幅寸法Ｗ１を有する。また、第１の給電線路２２Ａは、垂直部２２ａの長さ寸法と傾斜部２２ｂの長さ寸法の合計寸法である線路長Ｌ１を有する。ここで、幅寸法Ｗ１は、平面状のアンテナ２００の面内方向における垂直部２２ａ及び傾斜部２２ｂの延在方向と直交する方向の寸法であり、線路長Ｌ１は、平面状のアンテナ２００の面内方向における垂直部２２ａ及び傾斜部２２ｂの延在方向に沿った寸法である。 The inclined portion 22b of the first feed line 22A moves from the positive end of the vertical portion 22a in the Y-axis direction toward the center line CL (i.e., toward the positive side in the X-axis direction) as it goes toward the positive side in the Y-axis direction. Lean closer. The positive end of the inclined portion 22b of the first feed line 22A in the Y-axis direction is connected to the outer peripheral edge 21a of the radiation conductor 21. The first feed line 22A has a constant width W1 in the vertical portion 22a and the inclined portion 22b. Further, the first feed line 22A has a line length L1 that is the total length of the vertical portion 22a and the inclined portion 22b. Here, the width dimension W1 is the dimension in the in-plane direction of the planar antenna 200 in a direction perpendicular to the extending direction of the vertical portion 22a and the inclined portion 22b, and the line length L1 is the dimension in the in-plane direction of the planar antenna 200. This is the dimension along the extending direction of the vertical portion 22a and the inclined portion 22b in the inward direction.
　なお、図５に示す例では、第１の給電線路２２Ａの垂直部２２ａは、放射導体２１のＸ軸方向の負側の端部よりも、Ｘ軸方向の負側へ離間した位置に配置される。また、第１の給電線路２２Ａの垂直部２２ａのＹ軸方向の正側の端部（すなわち傾斜部２２ｂとの接続部）は、放射導体２１のＹ軸方向の負側の端部よりも、Ｙ軸方向の負側へ離間した位置に配置される。ただし、垂直部２２ａ及び傾斜部２２ｂの配置及び形状は、特に限定されるものではない。第２の給電線路２２Ｂは、第１の給電線路２２Ａと中心線ＣＬを基準として線対称な構造を有する。本実施形態では、第１の給電線路２２Ａの傾斜部２２ｂと第２の給電線路２２Ｂの傾斜部２２ｂは、第１の給電線路２２Ａの傾斜部２２ｂを延ばした仮想線と第２の給電線路２２Ｂの傾斜部２２ｂを延ばした仮想線とが直交するように放射導体２１の外周縁２１ａに接続されている。つまり、第１の給電線路２２Ａの傾斜部２２ｂを延ばした仮想線と第２の給電線路２２Ｂの傾斜部２２ｂを延ばした仮想線とが成す角度は９０度である。 In the example shown in FIG. 5, the vertical portion 22a of the first feed line 22A is arranged at a position farther away from the negative end of the radiation conductor 21 in the X-axis direction toward the negative side in the X-axis direction. Ru. Further, the positive end of the vertical portion 22a of the first feed line 22A in the Y-axis direction (i.e., the connection portion with the inclined portion 22b) is smaller than the negative end of the radiation conductor 21 in the Y-axis direction. It is arranged at a position spaced apart toward the negative side in the Y-axis direction. However, the arrangement and shape of the vertical portion 22a and the inclined portion 22b are not particularly limited. The second feed line 22B has a line-symmetrical structure with the first feed line 22A with respect to the center line CL. In this embodiment, the inclined part 22b of the first feed line 22A and the inclined part 22b of the second feed line 22B are connected to a virtual line extending the inclined part 22b of the first feed line 22A and the second feed line 22B. The radiating conductor 21 is connected to the outer peripheral edge 21a of the radiation conductor 21 so that the imaginary line extending from the inclined portion 22b is perpendicular to the imaginary line. In other words, the angle formed by the imaginary line extending the inclined portion 22b of the first feed line 22A and the imaginary line extending the inclined portion 22b of the second feed line 22B is 90 degrees.
　端子パッド部２３Ａ，２３Ｂは、給電線路２２Ａ，２２Ｂにそれぞれ接続される端子である。端子パッド部２３Ａ，２３Ｂは、外部の入出力端子と接続されることで、給電線路２２Ａ，２２Ｂを介して放射導体２１に給電する。端子パッド部２３Ａ，２３Ｂは、光透過性基材１の端部１ａ付近に配置される。端子パッド部２３Ａ，２３Ｂは、給電線路２２Ａ，２２Ｂの垂直部２２ａのＹ軸方向の負側の端部から、端部１ａ側へＹ軸方向の負側へ延びる。端子パッド部２３Ａ，２３Ｂは、一定の幅寸法Ｗ２にて、Ｙ軸方向に延びる。端子パッド部２３Ａ，２３Ｂは、幅寸法Ｌ２にてＸ軸方向に延びる。 The terminal pad portions 23A and 23B are terminals connected to the power supply lines 22A and 22B, respectively. The terminal pad portions 23A, 23B are connected to external input/output terminals to feed power to the radiation conductor 21 via the power feed lines 22A, 22B. The terminal pad portions 23A and 23B are arranged near the end portion 1a of the light-transmissive base material 1. The terminal pad portions 23A, 23B extend from the negative end in the Y-axis direction of the vertical portion 22a of the feed lines 22A, 22B toward the end 1a toward the negative side in the Y-axis direction. The terminal pad portions 23A and 23B extend in the Y-axis direction with a constant width dimension W2. The terminal pad portions 23A and 23B extend in the X-axis direction with a width dimension L2.
　グラウンドパターン２０２は、電気的にグラウンド状態となる領域である。グラウンドパターン２０２は、図示されないグラウンド端子と接続される。グラウンドパターン２０２は、端子パッド部２３Ａ，２３Ｂに対して隙間を空けて配置されることで、端子パッド部２３Ａ，２３Ｂと絶縁されている。 The ground pattern 202 is an area that is electrically grounded. The ground pattern 202 is connected to a ground terminal (not shown). The ground pattern 202 is insulated from the terminal pad parts 23A, 23B by being arranged with a gap between them.
　中央部２４Ａは、第１の端子パッド部２３Ａと第２の端子パッド部２３Ｂとの間に配置される。中央部２４Ａは、端子パッド部２３Ａ，２３Ｂ間の領域において、端部１ａに沿ってＸ軸方向に延びるように形成される。第１の側部２４Ｂは、中央部２４Ａとの間で第１の端子パッド部２３Ａを挟むように配置される。第１の側部２４Ｂは、第１の端子パッド部２３ＡのＸ軸方向の負側の領域において、端部１ａに沿ってＸ軸方向に延びるように形成される。第２の側部２４Ｃは、中央部２４Ａとの間で第２の端子パッド部２３Ｂを挟むように配置される。第２の側部２４Ｃは、第２の端子パッド部２３ＢのＸ軸方向の正側の領域において、端部１ａに沿ってＸ軸方向に延びるように形成される。中央部２４Ａ、及び側部２４Ｂ，２４Ｃは、Ｙ軸方向において一定の幅寸法にて、Ｘ軸方向に帯状に延びる。中央部２４Ａ、及び側部２４Ｂ，２４ＣのＹ軸方向の正側の端部は、Ｘ軸方向と平行に延びる。中央部２４Ａ、及び側部２４Ｂ，２４ＣのＹ軸方向の正側の端部は、端子パッド部２３Ａ，２３ＢのＹ軸方向の正側の端部と、Ｙ軸方向において同位置に配置される。 The central portion 24A is arranged between the first terminal pad portion 23A and the second terminal pad portion 23B. The center portion 24A is formed to extend in the X-axis direction along the end portion 1a in a region between the terminal pad portions 23A and 23B. The first side portion 24B is arranged to sandwich the first terminal pad portion 23A between the first side portion 24B and the center portion 24A. The first side portion 24B is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the first terminal pad portion 23A in the X-axis direction. The second side portion 24C is arranged to sandwich the second terminal pad portion 23B between the second side portion 24C and the center portion 24A. The second side portion 24C is formed to extend in the X-axis direction along the end portion 1a in a region on the positive side of the second terminal pad portion 23B in the X-axis direction. The center portion 24A and the side portions 24B and 24C extend in a band shape in the X-axis direction with a constant width dimension in the Y-axis direction. The end portions of the center portion 24A and the side portions 24B and 24C on the positive side in the Y-axis direction extend parallel to the X-axis direction. The positive ends of the center portion 24A and the side portions 24B and 24C in the Y-axis direction are arranged at the same position in the Y-axis direction as the positive ends of the terminal pad portions 23A and 23B in the Y-axis direction. .
　第１の接続部２４Ｄは、中央部２４Ａと第１の側部２４Ｂとを接続する。第１の接続部２４Ｄは、光透過性基材１の一方の主面１Ｓ上において、第１の端子パッド部２３Ａと光透過性基材１の端部１ａとの間にて延在する。第１の接続部２４Ｄは、第１の端子パッド部２３ＡのＹ軸方向の負側の領域において、端部１ａに沿ってＸ軸方向に延びるように形成される。第２の接続部２４Ｅは、中央部２４Ａと第２の側部２４Ｃとを接続する。第２の接続部２４Ｅは、光透過性基材１の一方の主面１Ｓ上において、第２の端子パッド部２３Ｂと光透過性基材１の端部１ａとの間にて延在する。第２の接続部２４Ｅは、第２の端子パッド部２３ＢのＹ軸方向の負側の領域において、端部１ａに沿ってＸ軸方向に延びるように形成される。 The first connecting portion 24D connects the center portion 24A and the first side portion 24B. The first connecting portion 24D extends between the first terminal pad portion 23A and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1. The first connection portion 24D is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the first terminal pad portion 23A in the Y-axis direction. The second connecting portion 24E connects the center portion 24A and the second side portion 24C. The second connecting portion 24E extends between the second terminal pad portion 23B and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1. The second connection portion 24E is formed to extend in the X-axis direction along the end portion 1a in the negative side region of the second terminal pad portion 23B in the Y-axis direction.
　接続部２４Ｄ，２４Ｅは、Ｙ軸方向において一定の幅寸法Ｌ３にて、Ｘ軸方向に帯状に延びる。中央部２４Ａ、側部２４Ｂ，２４Ｃ、及び接続部２４Ｄ，２４ＥのＹ軸方向の負側の端部は、Ｘ軸方向と平行に延びる。中央部２４Ａ、側部２４Ｂ，２４Ｃ、及び接続部２４Ｄ，２４ＥのＹ軸方向の負側の端部は、端部１ａと、Ｙ軸方向において同位置に配置される。つまり、本実施形態では、中央部２４Ａ、側部２４Ｂ，２４Ｃ、及び接続部２４Ｄ，２４ＥのＹ軸方向の負側の端部は、光透過性基材１の一方の主面１Ｓ上において、端部１ａに至るように延びている。なお、中央部２４Ａ、側部２４Ｂ，２４Ｃ、及び接続部２４Ｄ，２４ＥのＹ軸方向の負側の端部は、光透過性基材１の端部１ａよりもＹ軸方向の正側に位置していても構わない。Ｙ軸方向における、接続部２４Ｄ，２４Ｅの幅寸法Ｌ３は、Ｙ軸方向における端子パッド部２３Ａ，２３Ｂの幅寸法Ｌ２よりも小さい。 The connecting portions 24D and 24E extend in a band shape in the X-axis direction with a constant width L3 in the Y-axis direction. The negative ends of the central portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction extend parallel to the X-axis direction. The negative end portions of the center portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction are arranged at the same position as the end portion 1a in the Y-axis direction. That is, in the present embodiment, the negative end portions of the central portion 24A, the side portions 24B, 24C, and the connecting portions 24D, 24E in the Y-axis direction are on one main surface 1S of the light-transmitting base material 1. It extends to the end 1a. Note that the ends of the central part 24A, the side parts 24B, 24C, and the connecting parts 24D, 24E on the negative side in the Y-axis direction are located on the positive side in the Y-axis direction from the end 1a of the light-transmitting base material 1. It doesn't matter if you do. A width L3 of the connecting portions 24D and 24E in the Y-axis direction is smaller than a width L2 of the terminal pad portions 23A and 23B in the Y-axis direction.
　アンテナ２００は、導体部３として、導電性材料をベタ塗りすることで形成される平面状の導体パターン５４を有する。アンテナ２００の構成要素のうち、端子パッド部２３Ａ，２３Ｂ、グラウンドパターン２０２は、平面状の導体パターン５４を有する。 The antenna 200 has, as the conductor portion 3, a planar conductor pattern 54 formed by solidly coating a conductive material. Among the components of the antenna 200, the terminal pad portions 23A, 23B and the ground pattern 202 have a planar conductor pattern 54.
　次に、図６を参照して、端子パッド部２３Ａ，２３Ｂ及びグラウンドパターン２０２の層構造について説明する。図６は、図５に示すＶＩ－ＶＩ線に沿った概略断面図である。図６（ａ）に示すように、光透過性基材１の一方の主面１Ｓ上には樹脂層７が配置される。端子パッド部２３Ａ，２３Ｂは、樹脂層７のメッシュ状のトレンチに設けられたメッシュ導体層７０と、メッシュ導体層７０上に配置される平面状の第１の平面導体層７１と、を有する。メッシュ導体層７０は、複数の開口を含む導体パターンを有する導体層の一例である。メッシュ導体層７０は、前述のメッシュ状の導体パターン５０を含む層である。道電線間の開口には、樹脂層７が配置される。また、グラウンドパターン２０２は、樹脂層７上に配置される平面状の第２の平面導体層７２を有する。第２の平面導体層７２が配置される箇所の下層には、樹脂層７だけが存在しており、メッシュ状の導体パターン５０は存在していない。平面導体層７１，７２は、導電性材料をベタ塗りすることで形成される平面状の導体パターンである。平面導体層７１，７２は、メッシュ導体層７０の一つあたりの導電線よりも広い幅を有するように主面１Ｓと平行に広がる。 Next, with reference to FIG. 6, the layer structure of the terminal pad portions 23A, 23B and the ground pattern 202 will be described. FIG. 6 is a schematic cross-sectional view taken along line VI-VI shown in FIG. As shown in FIG. 6(a), a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1. The terminal pad portions 23A, 23B include a mesh conductor layer 70 provided in a mesh-shaped trench of the resin layer 7, and a planar first plane conductor layer 71 disposed on the mesh conductor layer 70. The mesh conductor layer 70 is an example of a conductor layer having a conductor pattern including a plurality of openings. The mesh conductor layer 70 is a layer containing the aforementioned mesh-like conductor pattern 50. A resin layer 7 is placed in the opening between the power lines. Further, the ground pattern 202 includes a second planar conductor layer 72 arranged on the resin layer 7 . Only the resin layer 7 exists in the lower layer where the second planar conductor layer 72 is arranged, and the mesh-like conductor pattern 50 does not exist. The planar conductor layers 71 and 72 are planar conductor patterns formed by solidly coating a conductive material. The planar conductor layers 71 and 72 extend parallel to the main surface 1S so as to have a width wider than each conductive line of the mesh conductor layer 70.
　図６（ｂ）は、図６（ａ）とは異なるパターンの層構造を示している。図６（ｂ）に示すように、光透過性基材１の一方の主面１Ｓ上には樹脂層７が配置される。端子パッド部２３Ａ，２３Ｂ、及びグラウンドパターン２０２は、樹脂層７のメッシュ状のトレンチに設けられたメッシュ導体層７０と、メッシュ導体層７０上に配置される平面状の第１の平面導体層７１と、を有する。メッシュ導体層７０は、複数の開口を含む導体パターンを有する導体層の一例である。 FIG. 6(b) shows a layer structure with a different pattern from that in FIG. 6(a). As shown in FIG. 6(b), a resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1. The terminal pad portions 23A, 23B and the ground pattern 202 are formed by a mesh conductor layer 70 provided in a mesh-shaped trench of the resin layer 7, and a planar first plane conductor layer 71 disposed on the mesh conductor layer 70. and has. The mesh conductor layer 70 is an example of a conductor layer having a conductor pattern including a plurality of openings.
　第１の平面導体層７１の厚みは、メッシュ導体層７０の厚みより厚い。第２の平面導体層７２の厚みは、メッシュ導体層７０の厚みより厚い。ここで、アンテナパターン２０１の放射導体２１及び給電線路２２Ａ，２２Ｂは、メッシュ導体層７０だけによって構成されており、上部に第１の平面導体層７１を有していない。すなわち、アンテナパターン２０１の放射導体２１及び給電線路２２Ａ，２２Ｂの導体厚みは、メッシュ導体層７０の厚みに相当する。従って、グラウンドパターン２０２の導体厚みは、アンテナパターン２０１の放射導体２１、給電線路２２Ａ，２２Ｂの厚みよりも厚い。なお、図６には接続部２４Ｄ，２４Ｅの層構成は記載されていないが、中央部２４Ａ、及び側部２４Ｂ，２４Ｃと同様の層構成を有している。また、メッシュ導体層７０は、メッシュ状の導体パターンを構成する導電線の一部が断線していても構わない。 The thickness of the first planar conductor layer 71 is thicker than the thickness of the mesh conductor layer 70. The thickness of the second planar conductor layer 72 is greater than the thickness of the mesh conductor layer 70. Here, the radiation conductor 21 and the feed lines 22A, 22B of the antenna pattern 201 are constituted only by the mesh conductor layer 70, and do not have the first plane conductor layer 71 on top. That is, the conductor thickness of the radiation conductor 21 of the antenna pattern 201 and the feed lines 22A, 22B corresponds to the thickness of the mesh conductor layer 70. Therefore, the conductor thickness of the ground pattern 202 is thicker than the thickness of the radiation conductor 21 of the antenna pattern 201 and the feed lines 22A and 22B. Although the layer structure of the connection parts 24D and 24E is not shown in FIG. 6, they have the same layer structure as the center part 24A and the side parts 24B and 24C. Further, in the mesh conductor layer 70, some of the conductive wires forming the mesh conductor pattern may be disconnected.
　なお、端子パッド部２３Ａ，２３Ｂ、及びグラウンドパターン２０２は、ベタ塗りの平面状の導体パターン５４の代わりに、放射導体２１及び給電線路２２Ａ，２２Ｂと同様に、メッシュ状の導体パターン５０を有する構成であってもよい。 Note that the terminal pad portions 23A, 23B and the ground pattern 202 have a mesh-like conductor pattern 50 instead of the solid planar conductor pattern 54, similar to the radiation conductor 21 and the feed lines 22A, 22B. It may be.
　図７に示すように、アンテナパターン２０１及びグラウンドパターン２０２は、光透過性基材１の端部１ａに沿って複数設けられてよい。この場合、各アンテナパターン２０１は、Ｘ軸方向に所定のピッチで互いに離間するように配列される。グラウンドパターン２０２は、端部１ａの位置において、Ｘ軸方向に延びるように複数配置される。ここで、互いに隣り合うアンテナパターン２０１の一方に対する第１の側部２４Ｂは、互いに隣り合うアンテナパターン２０１の他方に対する第２の側部２４Ｃに該当する。このように、一のアンテナパターン２０１の第１の端子パッド部２３Ａと、Ｘ軸方向の負側に隣り合うアンテナパターン２０１の第２の端子パット部２３Ｂとの間の側部は、第１の側部２４Ｂ及び第２の側部２３Ｃとして共用される。 As shown in FIG. 7, a plurality of antenna patterns 201 and ground patterns 202 may be provided along the end portion 1a of the light-transmitting base material 1. In this case, each antenna pattern 201 is arranged so as to be spaced apart from each other at a predetermined pitch in the X-axis direction. A plurality of ground patterns 202 are arranged at the position of the end portion 1a so as to extend in the X-axis direction. Here, the first side portion 24B for one of the antenna patterns 201 adjacent to each other corresponds to the second side portion 24C for the other antenna pattern 201 adjacent to each other. In this way, the side portion between the first terminal pad portion 23A of one antenna pattern 201 and the second terminal pad portion 23B of the adjacent antenna pattern 201 on the negative side in the X-axis direction is It is commonly used as the side portion 24B and the second side portion 23C.
　例えば、図８に示すアンテナ２００を採用してもよい。図８に示すアンテナ２００は、図５に示すメッシュ状の放射導体２１及び給電線路２２Ａ，２２Ｂに代えて、ベタ塗りの平面状の導体パターン５４による放射導体２１及び給電線路２２Ａ，２２Ｂを採用したものである。図８に示すアンテナ２００の、その他の構成は、図５に示すアンテナ２００と同様である。 For example, an antenna 200 shown in FIG. 8 may be employed. An antenna 200 shown in FIG. 8 employs a radiation conductor 21 and feed lines 22A, 22B made of a solid planar conductor pattern 54 instead of the mesh-like radiation conductor 21 and feed lines 22A, 22B shown in FIG. It is something. The other configuration of the antenna 200 shown in FIG. 8 is the same as that of the antenna 200 shown in FIG. 5.
　次に、本実施形態に係るアンテナ２００、及び表示装置１００の作用・効果について説明する。 Next, the functions and effects of the antenna 200 and the display device 100 according to this embodiment will be explained.
　本実施形態に係るアンテナ２００によれば、グラウンドパターン２０２は、第１の端子パッド部２３Ａと第２の端子パッド部２３Ｂとの間に配置される中央部２４Ａと、中央部２４Ａとの間で第１の端子パッド部２３Ａを挟むように配置される第１の側部２４Ｂと、中央部２４Ａとの間で第２の端子パッド部２３Ｂを挟むように配置される第２の側部２４Ｃと、を有する。更に、グラウンドパターン２０２は、中央部２４Ａと第１の側部２４Ｂとを接続する第１の接続部２４Ｄと、中央部２４Ａと第２の側部２４Ｃとを接続する第２の接続部２４Ｅと、を有する。この第１の接続部２４Ｄは、光透過性基材１の一方の主面１Ｓ上において、第１の端子パッド部２３Ａと光透過性基材１の端部１ａとの間にて延在する。また、第２の接続部２４Ｅは、光透過性基材１の一方の主面１Ｓ上において、第２の端子パッド部２３Ｂと光透過性基材１の端部１ａとの間にて延在する。このように、光透過性基材１の一方の主面１Ｓのうち、端子パッド部２３Ａ，２３Ｂと光透過性基材１の端部１ａとの間の領域を用いて、グラウンドパターン２０２の中央部２４Ａ、第１の側部２４Ｂ、及び第２の側部２３Ｃを接続部２４Ｄ，２４Ｅによって電気的に接続することができる。これにより、グラウンドパターン２０２の各部位が電気的に分断されることなく、電気的に接続された状態となるため、グラウンドパターン２０２における電気的安定性を確保することができる。 According to the antenna 200 according to the present embodiment, the ground pattern 202 is arranged between the center portion 24A and the center portion 24A disposed between the first terminal pad portion 23A and the second terminal pad portion 23B. A first side portion 24B is arranged to sandwich the first terminal pad portion 23A, and a second side portion 24C is arranged to sandwich the second terminal pad portion 23B between the center portion 24A. , has. Furthermore, the ground pattern 202 includes a first connection portion 24D that connects the center portion 24A and the first side portion 24B, and a second connection portion 24E that connects the center portion 24A and the second side portion 24C. , has. The first connecting portion 24D extends between the first terminal pad portion 23A and the end portion 1a of the light-transmitting substrate 1 on one main surface 1S of the light-transmitting substrate 1. . Further, the second connecting portion 24E extends between the second terminal pad portion 23B and the end portion 1a of the light-transmitting base material 1 on one main surface 1S of the light-transmitting base material 1. do. In this way, the center of the ground pattern 202 is formed using the area between the terminal pad portions 23A, 23B and the end portion 1a of the light transmitting base material 1 on one main surface 1S of the light transmitting base material 1. The portion 24A, the first side portion 24B, and the second side portion 23C can be electrically connected by the connecting portions 24D and 24E. As a result, each part of the ground pattern 202 is not electrically separated and is electrically connected, so that electrical stability in the ground pattern 202 can be ensured.
　ここで、比較例として、基材の他方の主面（主面１Ｓの裏側の主面）にてグラウンドパターンを共通化した構成について述べる（例えば、特表２０２１－５１８０７０号公報）。このようなグラウンドパターンの一部は、アンテナパターンと同じ主面に形成され、裏側まで回り込んでアンテナパターンの裏側に他の部分が設けられている。このような比較例に係る構成では、基材が透明の場合は、視認性の観点からグラウンドパターンをメッシュ状の導体パターンによって構成する必要があり、ケーブルとの接続安定性が低下すると共に、モアレが発生する可能性がある。これに対し、本実施形態に係るアンテナ２００では、グラウンドパターン２０２がアンテナパターン２０１と同じ主面１Ｓにて共通化が図られているため、製造の手間を低減し、コストを削減することができる。また、グラウンドパターン２０２が基板の端部１ａ付近に配置されているため、視認性に影響が出ない。そのため、グラウンドパターン２０２を平面導体層で形成でき、接地安定性を向上できる。また、グラウンドパターン２０２の各部位が端子パッド部２３Ａ，２３Ｂ付近で接続されるため、ケーブルとの接合面積を大きく取ることができ、接続信頼性を向上できる。 Here, as a comparative example, a configuration in which the ground pattern is shared on the other main surface of the base material (the main surface on the back side of the main surface 1S) will be described (for example, Japanese Patent Publication No. 2021-518070). A part of such a ground pattern is formed on the same main surface as the antenna pattern, goes around to the back side, and another part is provided on the back side of the antenna pattern. In the configuration according to such a comparative example, if the base material is transparent, the ground pattern needs to be configured with a mesh-like conductor pattern from the viewpoint of visibility, which reduces the stability of connection with the cable and causes moiré. may occur. On the other hand, in the antenna 200 according to the present embodiment, the ground pattern 202 and the antenna pattern 201 are shared on the same main surface 1S, so it is possible to reduce the manufacturing effort and cost. . Further, since the ground pattern 202 is arranged near the edge 1a of the substrate, visibility is not affected. Therefore, the ground pattern 202 can be formed of a planar conductor layer, and grounding stability can be improved. Moreover, since each part of the ground pattern 202 is connected near the terminal pad parts 23A and 23B, a large joint area with the cable can be taken, and connection reliability can be improved.
　光透過性基材１の端部１ａに沿うＸ軸方向に直交するＹ軸方向における、第１の接続部２４Ｄ及び第２の接続部２４Ｅの幅寸法Ｌ３は、Ｙ軸方向における第１の端子パッド部２３Ａ及び第２の端子パッド部２３Ｂの幅寸法Ｌ２よりも小さくてよい。この場合、第１の接続部２４Ｄ及び第２の接続部２４Ｅが、第１の端子パッド部２３Ａ及び第２の端子パッド部２３Ｂと光透過性基材１の端部１ａとの間で太くなりすぎることを抑制できる。 The width dimension L3 of the first connecting portion 24D and the second connecting portion 24E in the Y-axis direction perpendicular to the X-axis direction along the end portion 1a of the light-transmitting substrate 1 is the width dimension L3 of the first terminal in the Y-axis direction. It may be smaller than the width dimension L2 of the pad portion 23A and the second terminal pad portion 23B. In this case, the first connecting portion 24D and the second connecting portion 24E become thicker between the first terminal pad portion 23A and the second terminal pad portion 23B and the end portion 1a of the light-transmitting base material 1. You can prevent too much.
　アンテナパターン２０１及びグラウンドパターン２０２は、光透過性基材１の端部１ａに沿って複数設けられており、互いに隣り合うアンテナパターン２０１の一方に対する第１の側部２４Ｂは、互いに隣り合うアンテナパターン２０１の他方に対する第２の側部２４Ｃに該当してよい。光透過性基材１の端部１ａに沿って複数のアンテナパターン２０１を設ける場合に、各アンテナパターン２０１に対するグラウンドパターン２０２同士を電気的に接続することができる。これにより、グラウンドパターン２０２における電気的安定性を確保することができる。 A plurality of antenna patterns 201 and ground patterns 202 are provided along the end portion 1a of the light-transmissive base material 1, and the first side portion 24B for one of the mutually adjacent antenna patterns 201 is a plurality of the antenna patterns 201 and the ground pattern 202. 201 may correspond to the second side 24C relative to the other side. When a plurality of antenna patterns 201 are provided along the end portion 1a of the light-transmitting base material 1, the ground patterns 202 for each antenna pattern 201 can be electrically connected to each other. Thereby, electrical stability in the ground pattern 202 can be ensured.
　グラウンドパターン２０２の導体厚みは、アンテナパターン２０１の放射導体２１、第１の給電線路２２Ａ、及び第２の給電線路２２Ｂの厚みよりも厚くてよい。この場合、グラウンドパターン２０２の導体の量が多くなるため、接地安定性を向上できる。 The conductor thickness of the ground pattern 202 may be thicker than the thickness of the radiation conductor 21 of the antenna pattern 201, the first feed line 22A, and the second feed line 22B. In this case, since the amount of conductors in the ground pattern 202 increases, grounding stability can be improved.
　光透過性基材１の一方の主面１Ｓ上には樹脂層７が配置され、第１の端子パッド部２３Ａ及び第２の端子パッド部２３Ｂは、複数の開口を含む導体パターンを有する導体層と、導体層上に配置される平面状の第１の平面導体層７１と、を有し、グラウンドパターン２０２は、樹脂層７上に配置される平面状の第２の平面導体層７２を有してよい。この場合、グラウンドパターン２０２で用いられる導体の量を減らすことができるとともに、外部端子との良好な接続を実現できる。 A resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1, and the first terminal pad section 23A and the second terminal pad section 23B are a conductive layer having a conductive pattern including a plurality of openings. and a first planar conductor layer 71 disposed on the conductor layer, and the ground pattern 202 has a second planar conductor layer 72 disposed on the resin layer 7. You may do so. In this case, the amount of conductor used in the ground pattern 202 can be reduced, and good connection with external terminals can be achieved.
　光透過性基材１の一方の主面１Ｓ上には樹脂層７が配置され、第１の端子パッド部２３Ａ、第２の端子パッド部２３Ｂ、及びグラウンドパターン２０２は、複数の開口を含む導体パターンを有する導体層と、導体層上に配置される平面状の第１の平面導体層７１と、を有してよい。この場合、メッシュの導体パターンを流用してグラウンドパターン２０２を作製できる。 A resin layer 7 is arranged on one main surface 1S of the light-transmissive base material 1, and the first terminal pad section 23A, the second terminal pad section 23B, and the ground pattern 202 are made of a conductor including a plurality of openings. It may include a conductor layer having a pattern and a first planar conductor layer 71 disposed on the conductor layer. In this case, the ground pattern 202 can be created by using a mesh conductor pattern.
　第１の平面導体層７１の厚みは、導体層の厚みより厚くてよい。この場合、電気抵抗値が小さくなり、電気的特性の向上が期待できる。 The thickness of the first planar conductor layer 71 may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
　第２の平面導体層７２の厚みは、導体層の厚みより厚くてよい。この場合、電気抵抗値が小さくなり、電気的特性の向上が期待できる。 The thickness of the second planar conductor layer 72 may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
　導体層は、樹脂層７のメッシュ状のトレンチに設けられたメッシュ導体層７０であってもよい。この場合、メッシュの導体パターンを流用してメッシュ導体層７０を作製できる。 The conductor layer may be a mesh conductor layer 70 provided in a mesh-like trench of the resin layer 7. In this case, the mesh conductor layer 70 can be fabricated by using the mesh conductor pattern.
　本実施形態に係る表示装置１００は、上述のアンテナ２００を備える。 The display device 100 according to this embodiment includes the antenna 200 described above.
　上述の表示装置１００によれば、上述のアンテナ２００と同様な作用・効果を得ることができる。 According to the display device 100 described above, it is possible to obtain the same actions and effects as the antenna 200 described above.
　本開示は、上述の実施形態に限定されない。例えば、アンテナの具体的な構成は、本開示の趣旨を逸脱しない範囲で適宜変更可能である。 The present disclosure is not limited to the embodiments described above. For example, the specific configuration of the antenna can be changed as appropriate without departing from the spirit of the present disclosure.
　上述の実施形態では、開口を含む導体パターンを有する導体層として、メッシュ導体層を例示した。しかし、開口を含む導体パターンは、メッシュに限定されず、ハニカム状の開口を含む導体パターンやドット状の開口を含む導体パターンが採用されてよい。 In the embodiments described above, a mesh conductor layer is exemplified as a conductor layer having a conductor pattern including openings. However, the conductor pattern including openings is not limited to the mesh, and a conductor pattern including honeycomb-shaped openings or a conductor pattern including dot-shaped openings may be employed.
　本開示に係る技術には、以下の構成例が含まれるが、これに限定されるものではない。 The technology according to the present disclosure includes, but is not limited to, the following configuration examples.
　本開示の一側面に係るアンテナは、基材と、基材の一方の主面上に配置される導体パターンで構成されるアンテナパターンと、基材の一方の主面上に配置される導体パターンで構成されるグラウンドパターンと、を備え、アンテナパターンは、放射導体と、放射導体から基材の端部側へ向かって引き出され、放射導体に給電を行う第１の給電線路及び第２の給電線路と、第１の給電線路及び第２の給電線路にそれぞれ接続される第１の端子及び第２の端子と、を有し、グラウンドパターンは、第１の端子と第２の端子との間に配置される中央部と、中央部との間で第１の端子を挟むように配置される第１の側部と、中央部との間で第２の端子を挟むように配置される第２の側部と、中央部と第１の側部とを接続する第１の接続部と、中央部と第２の側部とを接続する第２の接続部と、を有し、第１の接続部は、基材の一方の主面上において、第１の端子と基材の端部との間にて延在し、第２の接続部は、基材の一方の主面上において、第２の端子と基材の端部との間にて延在する。 An antenna according to one aspect of the present disclosure includes a base material, an antenna pattern configured of a conductor pattern arranged on one main surface of the base material, and a conductor pattern arranged on one main surface of the base material. The antenna pattern includes a radiation conductor, a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed the radiation conductor. It has a line, and a first terminal and a second terminal connected to the first feed line and the second feed line, respectively, and the ground pattern is between the first terminal and the second terminal. a first side portion arranged to sandwich the first terminal between the center portion; and a first side portion arranged to sandwich the second terminal between the center portion. a first connecting portion connecting the central portion and the first side portion; and a second connecting portion connecting the central portion and the second side portion; The connecting portion extends between the first terminal and the end of the base material on one main surface of the base material, and the second connecting portion extends on one main surface of the base material. , extending between the second terminal and the end of the substrate.
　上述のアンテナによれば、グラウンドパターンは、第１の端子と第２の端子との間に配置される中央部と、中央部との間で第１の端子を挟むように配置される第１の側部と、中央部との間で第２の端子を挟むように配置される第２の側部と、を有する。更に、グラウンドパターンは、中央部と第１の側部とを接続する第１の接続部と、中央部と第２の側部とを接続する第２の接続部と、を有する。この第１の接続部は、基材の一方の主面上において、第１の端子と基材の端部との間にて延在する。また、第２の接続部は、基材の一方の主面上において、第２の端子と基材の端部との間にて延在する。このように、基材の一方の主面のうち、端子と基材の端部との間の領域を用いて、グラウンドパターンの中央部、第１の側部、及び第２の側部を接続部によって電気的に接続することができる。これにより、グラウンドパターンの各部位が電気的に分断されることなく、電気的に接続された状態となるため、グラウンドパターンにおける電気的安定性を確保することができる。 According to the above-described antenna, the ground pattern includes a central portion disposed between the first terminal and the second terminal, and a first ground pattern disposed such that the first terminal is sandwiched between the central portion. and a second side portion arranged to sandwich the second terminal between the center portion and the second side portion. Further, the ground pattern has a first connection portion that connects the center portion and the first side portion, and a second connection portion that connects the center portion and the second side portion. The first connection portion extends between the first terminal and the end of the base on one main surface of the base. Further, the second connection portion extends between the second terminal and the end of the base material on one main surface of the base material. In this way, the center, first side, and second side of the ground pattern are connected using the area between the terminal and the end of the base on one main surface of the base. It can be electrically connected by the part. As a result, each part of the ground pattern is not electrically separated and is electrically connected, so that electrical stability in the ground pattern can be ensured.
　基材の端部に沿う第１の方向に直交する第２の方向における、第１の接続部及び第２の接続部の幅寸法は、第２の方向における第１の端子及び第２の端子の幅寸法よりも小さくてよい。この場合、第１の接続部及び第２の接続部が、第１の端子及び第２の端子と基材の端部との間で太くなりすぎることを抑制できる。 The width dimension of the first connection part and the second connection part in the second direction perpendicular to the first direction along the edge of the base material is the width of the first terminal and the second terminal in the second direction. It may be smaller than the width dimension of. In this case, it is possible to prevent the first connection portion and the second connection portion from becoming too thick between the first terminal and the second terminal and the end portion of the base material.
　アンテナパターン及びグラウンドパターンは、基材の端部に沿って複数設けられており、互いに隣り合うアンテナパターンの一方に対する第１の側部は、互いに隣り合うアンテナパターンの他方に対する第２の側部に該当してよい。基材の端部に沿って複数のアンテナパターンを設ける場合に、各アンテナパターンに対するグラウンドパターン同士を電気的に接続することができる。これにより、グラウンドパターンにおける電気的安定性を確保することができる。 A plurality of antenna patterns and ground patterns are provided along the edge of the base material, and a first side of one of the adjacent antenna patterns is a second side of the other of the adjacent antenna patterns. This may apply. When providing a plurality of antenna patterns along the edge of the base material, the ground patterns for each antenna pattern can be electrically connected to each other. Thereby, electrical stability in the ground pattern can be ensured.
　グラウンドパターンの導体厚みは、アンテナパターンの放射導体、第１の給電線路、及び第２の給電線路の厚みよりも厚くてよい。この場合、グラウンドパターンの導体の量が多くなるため、接地安定性を向上できる。 The conductor thickness of the ground pattern may be thicker than the thickness of the radiation conductor of the antenna pattern, the first feed line, and the second feed line. In this case, since the amount of conductors in the ground pattern increases, grounding stability can be improved.
　基材の一方の主面上には樹脂層が配置され、第１の端子及び第２の端子は、複数の開口を含む導体パターンを有する導体層と、導体層上に配置される平面状の第１の平面導体層と、を有し、グラウンドパターンは、樹脂層上に配置される平面状の第２の平面導体層を有してよい。この場合、グラウンドパターンで用いられる導体の量を減らすことができるとともに、外部端子との良好な接続を実現できる。 A resin layer is disposed on one main surface of the base material, and the first terminal and the second terminal include a conductor layer having a conductor pattern including a plurality of openings, and a planar resin layer disposed on the conductor layer. The ground pattern may include a second planar conductor layer disposed on the resin layer. In this case, the amount of conductor used in the ground pattern can be reduced, and good connection with external terminals can be achieved.
　基材の一方の主面上には樹脂層が配置され、第１の端子、第２の端子、及びグラウンドパターンは、複数の開口を含む導体パターンを有する導体層と、導体層上に配置される平面状の第１の平面導体層と、を有してよい。この場合、メッシュの導体パターンを流用してグラウンドパターンを作製できる。 A resin layer is disposed on one main surface of the base material, and the first terminal, the second terminal, and the ground pattern are disposed on the conductor layer and the conductor layer having a conductor pattern including a plurality of openings. A first planar conductor layer having a planar shape. In this case, the ground pattern can be created by using the mesh conductor pattern.
　第１の平面導体層の厚みは、導体層の厚みより厚くてよい。この場合、電気抵抗値が小さくなり、電気的特性の向上が期待できる。 The thickness of the first planar conductor layer may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
　第２の平面導体層の厚みは、導体層の厚みより厚くてよい。この場合、電気抵抗値が小さくなり、電気的特性の向上が期待できる。 The thickness of the second planar conductor layer may be greater than the thickness of the conductor layer. In this case, the electrical resistance value will be reduced, and an improvement in electrical characteristics can be expected.
　導体層は、樹脂層のメッシュ状のトレンチに設けられたメッシュ導体層であってもよい。この場合、メッシュの導体パターンを流用してメッシュ導体層を作製できる。 The conductor layer may be a mesh conductor layer provided in a mesh-like trench in the resin layer. In this case, the mesh conductor layer can be fabricated by using the mesh conductor pattern.
　本開示の一側面に係る表示装置は、上述のアンテナを備える。 A display device according to one aspect of the present disclosure includes the above-described antenna.
　上述の表示装置によれば、上述のアンテナと同様な作用・効果を得ることができる。 According to the above-mentioned display device, the same operation and effect as the above-mentioned antenna can be obtained.
［形態１］
　基材と、
　前記基材の一方の主面上に配置される導体パターンで構成されるアンテナパターンと、
　前記基材の前記一方の主面上に配置される導体パターンで構成されるグラウンドパターンと、を備え、
　前記アンテナパターンは、
　　放射導体と、
　　前記放射導体から前記基材の端部側へ向かって引き出され、前記放射導体に給電を行う第１の給電線路及び第２の給電線路と、
　　前記第１の給電線路及び前記第２の給電線路にそれぞれ接続される第１の端子及び第２の端子と、を有し、
　前記グラウンドパターンは、
　　前記第１の端子と前記第２の端子との間に配置される中央部と、
　　前記中央部との間で前記第１の端子を挟むように配置される第１の側部と、
　　前記中央部との間で前記第２の端子を挟むように配置される第２の側部と、
　　前記中央部と前記第１の側部とを接続する第１の接続部と、
　　前記中央部と前記第２の側部とを接続する第２の接続部と、を有し、
　前記第１の接続部は、前記基材の前記一方の主面上において、前記第１の端子と前記基材の前記端部との間にて延在し、
　前記第２の接続部は、前記基材の前記一方の主面上において、前記第２の端子と前記基材の前記端部との間にて延在する、アンテナ。
［形態２］
　前記基材の前記端部に沿う第１の方向に直交する第２の方向における、前記第１の接続部及び前記第２の接続部の幅寸法は、前記第２の方向における前記第１の端子及び前記第２の端子の幅寸法よりも小さい、形態１に記載のアンテナ。
［形態３］
　前記アンテナパターン及び前記グラウンドパターンは、前記基材の前記端部に沿って複数配列されており、
　互いに隣り合う前記アンテナパターンの一方に対する前記第１の側部は、互いに隣り合う前記アンテナパターンの他方に対する前記第２の側部に該当する、形態１又は２に記載のアンテナ。
［形態４］
　前記グラウンドパターンの導体厚みは、前記アンテナパターンの前記放射導体、前記第１の給電線路、及び前記第２の給電線路の厚みよりも厚い、形態１～３の何れか一項に記載のアンテナ。
［形態５］
　前記基材の前記一方の主面上には樹脂層が配置され、
　前記第１の端子及び前記第２の端子は、複数の開口を含む導体パターンを有する導体層と、前記導体層上に配置される平面状の第１の平面導体層と、を有し、
　前記グラウンドパターンは、前記樹脂層上に配置される平面状の第２の平面導体層を有する、形態１～４の何れか一項に記載のアンテナ。
［形態６］
　前記基材の前記一方の主面上には樹脂層が配置され、
　前記第１の端子、前記第２の端子、及び前記グラウンドパターンは、複数の開口を含む導体パターンを有する導体層と、前記導体層上に配置される平面状の第１の平面導体層と、を有する、形態１～４の何れか一項に記載のアンテナ。
［形態７］
　前記第１の平面導体層の厚みは、前記導体層の厚みより厚い、形態５又は６に記載のアンテナ。
［形態８］
　前記第２の平面導体層の厚みは、前記導体層の厚みより厚い、形態５に記載のアンテナ。
［形態９］
　前記導体層は、前記樹脂層のメッシュ状のトレンチに設けられたメッシュ導体層である、形態５～８の何れか一項に記載のアンテナ。
［形態１０］
　形態１～９の何れか一項に記載のアンテナを備える、表示装置。 [Form 1]
base material and
an antenna pattern composed of a conductor pattern arranged on one main surface of the base material;
a ground pattern made up of a conductor pattern arranged on the one main surface of the base material,
The antenna pattern is
a radiating conductor;
a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed power to the radiation conductor;
a first terminal and a second terminal connected to the first feed line and the second feed line, respectively;
The ground pattern is
a central portion disposed between the first terminal and the second terminal;
a first side portion arranged to sandwich the first terminal between the first side portion and the center portion;
a second side portion arranged to sandwich the second terminal between the second side portion and the center portion;
a first connecting portion connecting the central portion and the first side portion;
a second connecting part connecting the central part and the second side part,
The first connecting portion extends between the first terminal and the end of the base on the one main surface of the base,
The second connecting portion is an antenna that extends between the second terminal and the end of the base on the one main surface of the base.
[Form 2]
The width dimension of the first connection part and the second connection part in the second direction perpendicular to the first direction along the end of the base material is equal to the width of the first connection part in the second direction. The antenna according to Form 1, wherein the antenna is smaller than a width dimension of the terminal and the second terminal.
[Form 3]
A plurality of the antenna patterns and the ground pattern are arranged along the edge of the base material,
The antenna according to form 1 or 2, wherein the first side portion of one of the antenna patterns adjacent to each other corresponds to the second side portion of the other of the antenna patterns adjacent to each other.
[Form 4]
The antenna according to any one of modes 1 to 3, wherein the conductor thickness of the ground pattern is thicker than the thickness of the radiation conductor, the first feed line, and the second feed line of the antenna pattern.
[Form 5]
A resin layer is arranged on the one main surface of the base material,
The first terminal and the second terminal include a conductor layer having a conductor pattern including a plurality of openings, and a flat first planar conductor layer disposed on the conductor layer,
5. The antenna according to any one of modes 1 to 4, wherein the ground pattern has a second planar conductor layer disposed on the resin layer.
[Form 6]
A resin layer is arranged on the one main surface of the base material,
The first terminal, the second terminal, and the ground pattern each include a conductor layer having a conductor pattern including a plurality of openings, and a planar first planar conductor layer disposed on the conductor layer. The antenna according to any one of Forms 1 to 4, having:
[Form 7]
The antenna according to embodiment 5 or 6, wherein the first planar conductor layer has a thickness greater than that of the conductor layer.
[Form 8]
The antenna according to embodiment 5, wherein the second planar conductor layer has a thickness greater than that of the conductor layer.
[Form 9]
9. The antenna according to any one of modes 5 to 8, wherein the conductor layer is a mesh conductor layer provided in a mesh-like trench of the resin layer.
[Form 10]
A display device comprising the antenna according to any one of Embodiments 1 to 9.
　７…樹脂層、２１…放射導体、２２Ａ，２２Ｂ…給電線路、２３Ａ，２３Ｂ…端子パッド部（端子）、２４Ａ…中央部、２４Ｂ…第１の側部、２４Ｃ…第２の側部、２４Ｄ…第１の接続部、２４Ｅ…第２の接続部、７０…メッシュ導体層、７１…第１の平面導体層、７２…第２の平面導体層、１００…表示装置、２００…アンテナ。 7... Resin layer, 21... Radiation conductor, 22A, 22B... Feeding line, 23A, 23B... Terminal pad part (terminal), 24A... Center part, 24B... First side part, 24C... Second side part, 24D ...first connection part, 24E...second connection part, 70...mesh conductor layer, 71...first plane conductor layer, 72...second plane conductor layer, 100...display device, 200...antenna.

Claims (10)

  1. 　基材と、
    　前記基材の一方の主面上に配置される導体パターンで構成されるアンテナパターンと、
    　前記基材の前記一方の主面上に配置される導体パターンで構成されるグラウンドパターンと、を備え、
    　前記アンテナパターンは、
    　　放射導体と、
    　　前記放射導体から前記基材の端部側へ向かって引き出され、前記放射導体に給電を行う第１の給電線路及び第２の給電線路と、
    　　前記第１の給電線路及び前記第２の給電線路にそれぞれ接続される第１の端子及び第２の端子と、を有し、
    　前記グラウンドパターンは、
    　　前記第１の端子と前記第２の端子との間に配置される中央部と、
    　　前記中央部との間で前記第１の端子を挟むように配置される第１の側部と、
    　　前記中央部との間で前記第２の端子を挟むように配置される第２の側部と、
    　　前記中央部と前記第１の側部とを接続する第１の接続部と、
    　　前記中央部と前記第２の側部とを接続する第２の接続部と、を有し、
    　前記第１の接続部は、前記基材の前記一方の主面上において、前記第１の端子と前記基材の前記端部との間にて延在し、
    　前記第２の接続部は、前記基材の前記一方の主面上において、前記第２の端子と前記基材の前記端部との間にて延在する、アンテナ。     base material and
    an antenna pattern composed of a conductor pattern arranged on one main surface of the base material;
    a ground pattern made up of a conductor pattern arranged on the one main surface of the base material,
    The antenna pattern is
    a radiating conductor;
    a first feed line and a second feed line that are drawn out from the radiation conductor toward the end side of the base material and feed power to the radiation conductor;
    a first terminal and a second terminal connected to the first feed line and the second feed line, respectively;
    The ground pattern is
    a central portion disposed between the first terminal and the second terminal;
    a first side portion arranged to sandwich the first terminal between the first side portion and the center portion;
    a second side portion arranged to sandwich the second terminal between the second side portion and the center portion;
    a first connecting portion connecting the central portion and the first side portion;
    a second connecting part connecting the central part and the second side part,
    The first connecting portion extends between the first terminal and the end of the base on the one main surface of the base,
    The second connecting portion is an antenna that extends between the second terminal and the end of the base on the one main surface of the base.
  2. 　前記基材の前記端部に沿う第１の方向に直交する第２の方向における、前記第１の接続部及び前記第２の接続部の幅寸法は、前記第２の方向における前記第１の端子及び前記第２の端子の幅寸法よりも小さい、請求項１に記載のアンテナ。 The width dimension of the first connection part and the second connection part in the second direction perpendicular to the first direction along the end of the base material is equal to the width of the first connection part in the second direction. The antenna according to claim 1, wherein the antenna is smaller than a width dimension of the terminal and the second terminal.
  3. 　前記アンテナパターン及び前記グラウンドパターンは、前記基材の前記端部に沿って複数配列されており、
    　互いに隣り合う前記アンテナパターンの一方に対する前記第１の側部は、互いに隣り合う前記アンテナパターンの他方に対する前記第２の側部に該当する、請求項１に記載のアンテナ。     A plurality of the antenna patterns and the ground pattern are arranged along the edge of the base material,
    The antenna according to claim 1, wherein the first side for one of the antenna patterns adjacent to each other corresponds to the second side for the other of the antenna patterns adjacent to each other.
  4. 　前記グラウンドパターンの導体厚みは、前記アンテナパターンの前記放射導体、前記第１の給電線路、及び前記第２の給電線路の厚みよりも厚い、請求項１に記載のアンテナ。 The antenna according to claim 1, wherein the conductor thickness of the ground pattern is thicker than the thickness of the radiation conductor, the first feed line, and the second feed line of the antenna pattern.
  5. 　前記基材の前記一方の主面上には樹脂層が配置され、
    　前記第１の端子及び前記第２の端子は、複数の開口を含む導体パターンを有する導体層と、前記導体層上に配置される平面状の第１の平面導体層と、を有し、
    　前記グラウンドパターンは、前記樹脂層上に配置される平面状の第２の平面導体層を有する、請求項１に記載のアンテナ。     A resin layer is arranged on the one main surface of the base material,
    The first terminal and the second terminal include a conductor layer having a conductor pattern including a plurality of openings, and a flat first planar conductor layer disposed on the conductor layer,
    The antenna according to claim 1, wherein the ground pattern includes a second planar conductor layer disposed on the resin layer.
  6. 　前記基材の前記一方の主面上には樹脂層が配置され、
    　前記第１の端子、前記第２の端子、及び前記グラウンドパターンは、複数の開口を含む導体パターンを有する導体層と、前記導体層上に配置される平面状の第１の平面導体層と、を有する、請求項１に記載のアンテナ。     A resin layer is arranged on the one main surface of the base material,
    The first terminal, the second terminal, and the ground pattern include a conductor layer having a conductor pattern including a plurality of openings, and a planar first planar conductor layer disposed on the conductor layer. The antenna according to claim 1, comprising:
  7. 　前記第１の平面導体層の厚みは、前記導体層の厚みより厚い、請求項５に記載のアンテナ。 The antenna according to claim 5, wherein the first planar conductor layer is thicker than the conductor layer.
  8. 　前記第２の平面導体層の厚みは、前記導体層の厚みより厚い、請求項５に記載のアンテナ。 The antenna according to claim 5, wherein the second planar conductor layer is thicker than the conductor layer.
  9. 　前記導体層は、前記樹脂層のメッシュ状のトレンチに設けられたメッシュ導体層である、請求項５に記載のアンテナ。 The antenna according to claim 5, wherein the conductor layer is a mesh conductor layer provided in a mesh-shaped trench in the resin layer.
  10. 　請求項１～９の何れか一項に記載のアンテナを備える、表示装置。 A display device comprising the antenna according to any one of claims 1 to 9.
PCT/JP2023/008871 2022-03-11 2023-03-08 Antenna and display device WO2023171718A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197544A (en) * 1977-09-28 1980-04-08 The United States Of America As Represented By The Secretary Of The Navy Windowed dual ground plane microstrip antennas
US20200243959A1 (en) * 2019-01-22 2020-07-30 Dongwoo Fine-Chem Co., Ltd. Antenna structure and display device including the same
WO2021147945A1 (en) * 2020-01-22 2021-07-29 京东方科技集团股份有限公司 Antenna unit and manufacturing method thereof, display device, and electronic apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197544A (en) * 1977-09-28 1980-04-08 The United States Of America As Represented By The Secretary Of The Navy Windowed dual ground plane microstrip antennas
US20200243959A1 (en) * 2019-01-22 2020-07-30 Dongwoo Fine-Chem Co., Ltd. Antenna structure and display device including the same
WO2021147945A1 (en) * 2020-01-22 2021-07-29 京东方科技集团股份有限公司 Antenna unit and manufacturing method thereof, display device, and electronic apparatus

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