Wiring substrate and method for manufacturing wiring substrate

Abstract

A wiring substrate (10) includes a substrate (11), a wiring pattern region (20) including a plurality of wirings (21) disposed on the substrate (11), and a plurality of dummy pattern regions (30) disposed around the wiring pattern region (20) and electrically independent from the wirings (21). An opening ratio (A21) of a first dummy pattern region (301) adjacent to the wiring pattern region (20) is equal to or greater than an opening ratio (A1) of the wiring pattern region (20). In addition, an opening ratio (A22) of a second dummy pattern region (302) adjacent to the first dummy pattern region (301) and farther from the wiring pattern region (20) than the first dummy pattern region (301) is greater than the opening ratio (A21) of the first dummy pattern region (301).

Description

Technical Field

[0001] Embodiments of this disclosure relate to wiring substrates and methods for manufacturing wiring substrates. Background Technology

[0002] Currently, portable terminal devices such as smartphones and tablets are undergoing rapid development towards higher functionality, miniaturization, thinner designs, and lighter weight. Because these mobile devices use multiple communication frequency bands, they require multiple antennas corresponding to those bands. For example, portable terminal devices may incorporate antennas for telephone communication, WiFi (Wireless Fidelity), 3G (Generation), 4G (Generation), LTE (Long Term Evolution), Bluetooth, and NFC (Near Field Communication). However, with the miniaturization of portable terminal devices, the space available for antenna installation is limited, narrowing the design freedom. Furthermore, due to the limited space required to house the antennas, the required radio wave sensitivity may not be met.

[0003] Therefore, a thin-film antenna capable of being mounted in the display area of ​​a portable terminal device has been developed. Regarding this thin-film antenna, in a transparent antenna formed by forming an antenna pattern on a transparent substrate, the antenna pattern is formed from a mesh-like conductive mesh layer, which is based on conductor portions forming opaque conductive layers and multiple openings forming non-transparent portions.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2011-66610

[0007] Patent Document 2: Japanese Patent No. 5636735

[0008] Patent Document 3: Japanese Patent No. 5695947

[0009] However, for example, in conventional thin-film antennas, one or more mesh antennas are mounted on a transparent substrate, but there are both areas with antenna patterns and areas without antenna patterns on the transparent substrate. In this case, because there are areas without antenna patterns, the areas with antenna patterns are easily visible. Therefore, it is desirable for wiring patterns such as antenna patterns to be difficult to see.

[0010] One of the objectives of this embodiment is to provide a wiring substrate and a method for manufacturing the wiring substrate that makes the wiring pattern area difficult to see. Summary of the Invention

[0011] One embodiment of the wiring substrate disclosed herein includes: a substrate; a wiring pattern region disposed on the substrate and comprising a plurality of wirings; and a plurality of dummy pattern regions disposed around the wiring pattern region and electrically independent of the wirings. The substrate is transparent. A first dummy pattern region among the plurality of dummy pattern regions adjacent to the wiring pattern region has an aperture ratio greater than that of the wiring pattern region. A second dummy pattern region among the plurality of dummy pattern regions adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region has an aperture ratio greater than that of the first dummy pattern region.

[0012] In one embodiment of the wiring substrate of this disclosure, there may be multiple wiring pattern regions, and at least one dummy pattern region may be arranged to surround the multiple wiring pattern regions.

[0013] In one embodiment of the wiring substrate of this disclosure, the aperture ratio of the wiring pattern region and the plurality of dummy pattern regions may increase in stages from the wiring pattern region toward the dummy pattern regions away from the wiring pattern region, the difference between the aperture ratio of the first dummy pattern region and the aperture ratio of the wiring pattern region is 0% or more and 2% or less, and the difference between the aperture ratios of adjacent dummy pattern regions is 0.02% or more and 2% or less.

[0014] In one embodiment of the wiring substrate of this disclosure, the wiring substrate may further include a surrounding region disposed around the dummy pattern region furthest from the wiring pattern region, the aperture ratio of the surrounding region being 100%.

[0015] In one embodiment of the wiring substrate of this disclosure, the aperture ratio of the wiring pattern region and the plurality of dummy pattern regions may increase in stages from the wiring pattern region toward the dummy pattern regions away from the wiring pattern region. The difference between the aperture ratio of the first dummy pattern region and the aperture ratio of the wiring pattern region, and the difference between the aperture ratios of adjacent dummy pattern regions are 0% or more and 2% or less. The difference between the aperture ratio of the surrounding region and the dummy pattern regions adjacent to the surrounding region are 0.02% or more and 2% or less.

[0016] In one embodiment of the wiring substrate of this disclosure, the outer edge of the wiring pattern area may include a first side and a second side that intersect each other when viewed from above. When the vertex where the first side and the second side intersect is taken as the first vertex, the extension line of the first side extending from the first vertex is taken as the first imaginary line, and the extension line of the second side extending from the first vertex is taken as the second imaginary line, the outer edge of the first imaginary pattern area has an arc shape centered on the first vertex in the area sandwiched between the first imaginary line and the second imaginary line.

[0017] In one embodiment of the wiring substrate of this disclosure, the outer edge of the second dummy pattern area may have an arc shape centered on the first vertex in the region sandwiched between the first dummy line and the second dummy line.

[0018] One embodiment of the wiring substrate disclosed herein includes: a substrate; a wiring pattern region disposed on the substrate and comprising a plurality of wirings; and a plurality of dummy pattern regions disposed around the wiring pattern region and electrically independent of the wirings. The substrate is transparent. The aperture ratio of a first dummy pattern region adjacent to the wiring pattern region among the plurality of dummy pattern regions is less than the aperture ratio of a second dummy pattern region adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region. The outer edge of the first dummy pattern region includes a third side and a fourth side that intersect each other when viewed from above. When the vertex where the third side intersects the fourth side is designated as a second vertex, the extension line of the third side extending from the second vertex is designated as a third imaginary line, and the extension line of the fourth side extending from the second vertex is designated as a fourth imaginary line, the outer edge of the second dummy pattern region has an arcuate shape centered on the second vertex in the region sandwiched between the third imaginary line and the fourth imaginary line.

[0019] In one embodiment of the wiring substrate of this disclosure, a plurality of dummy pattern regions may include a plurality of dummy wirings that are electrically independent of the wirings. The plurality of dummy wirings each have a first dummy wiring portion and a second dummy wiring portion. The first dummy wiring portions of adjacent dummy pattern regions are arranged parallel to each other, and the second dummy wiring portions of adjacent dummy pattern regions are arranged parallel to each other.

[0020] In one embodiment of the wiring substrate of this disclosure, the wiring pattern area may further include a plurality of connecting wires connecting the plurality of wirings, and the plurality of dummy pattern areas may include a plurality of dummy wires that are electrically independent of the wirings and the connecting wires, respectively. The plurality of dummy wires may each have a first dummy wire portion and a second dummy wire portion. The wirings are arranged parallel to each other with the first dummy wire portions of each of the dummy pattern areas, and the connecting wires are arranged parallel to each other with the second dummy wire portions of each of the dummy pattern areas.

[0021] One embodiment of the wiring substrate disclosed herein includes: a substrate; a wiring pattern region disposed on the substrate and comprising a plurality of wirings; and a dummy pattern region disposed around the wiring pattern region and electrically independent of the wirings. The substrate is transparent. The outer edge of the wiring pattern region includes a first side and a second side that intersect each other when viewed from above. When the vertex where the first side and the second side intersect is taken as a first vertex, the extension line of the first side extending from the first vertex is taken as a first imaginary line, and the extension line of the second side extending from the first vertex is taken as a second imaginary line, the outer edge of the dummy pattern region has an arcuate shape centered on the first vertex in the region sandwiched between the first imaginary line and the second imaginary line.

[0022] In one embodiment of the wiring substrate disclosed herein, the wiring substrate may have radio wave transceiver function.

[0023] An image display device according to one embodiment of the present disclosure includes: a wiring substrate according to one embodiment; and a display device stacked on the wiring substrate, wherein the wiring pattern area is disposed at a corner of the display device.

[0024] A method for manufacturing a wiring substrate according to one embodiment of the present disclosure includes: a step of preparing a substrate; and a step of forming a wiring pattern region and a plurality of dummy pattern regions on the substrate, the wiring pattern region including a plurality of wirings, the plurality of dummy pattern regions being disposed around the wiring pattern region and electrically independent of the wirings, the substrate being transparent, a first dummy pattern region among the plurality of dummy pattern regions adjacent to the wiring pattern region having an aperture ratio greater than the aperture ratio of the wiring pattern region, and a second dummy pattern region among the plurality of dummy pattern regions adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region having an aperture ratio greater than the aperture ratio of the first dummy pattern region.

[0025] A method for manufacturing a wiring substrate according to one embodiment of the present disclosure includes: a step of preparing a substrate; and a step of forming a wiring pattern region and a dummy pattern region on the substrate, the wiring pattern region comprising a plurality of wirings, the dummy pattern region being disposed around the wiring pattern region and electrically independent of the wirings, the substrate being transparent, and the outer edge of the wiring pattern region comprising a first side and a second side that intersect each other when viewed from above, wherein the vertex where the first side intersects the second side is designated as a first vertex, an extension line of the first side extending from the first vertex is designated as a first imaginary line, and an extension line of the second side extending from the first vertex is designated as a second imaginary line, the outer edge of the dummy pattern region having an arc shape centered on the first vertex in the region sandwiched between the first imaginary line and the second imaginary line.

[0026] One embodiment of the present disclosure provides a method for manufacturing a wiring substrate, comprising: a step of preparing a substrate; and a step of forming a wiring pattern region and a plurality of dummy pattern regions on the substrate, wherein the wiring pattern region includes a plurality of wirings, the plurality of dummy pattern regions are disposed around the wiring pattern region and are electrically independent of the wirings, the substrate is transparent, and a first dummy pattern region among the plurality of dummy pattern regions adjacent to the wiring pattern region has an aperture ratio smaller than that of the first dummy pattern region among the plurality of dummy pattern regions adjacent to the first dummy pattern region and larger than that of the first dummy pattern region. The aperture ratio of the second dummy pattern region, which is far from the wiring pattern region, is given. The outer edge of the first dummy pattern region includes a third side and a fourth side that intersect each other when viewed from above. When the vertex where the third side and the fourth side intersect is taken as the second vertex, the extension line of the third side extending from the second vertex is taken as the third imaginary line, and the extension line of the fourth side extending from the second vertex is taken as the fourth imaginary line, the outer edge of the second dummy pattern region has an arc shape centered on the second vertex in the region enclosed by the third imaginary line and the fourth imaginary line.

[0027] According to embodiments of this disclosure, wiring pattern areas are difficult to see. Attached Figure Description

[0028] Figure 1 This is a top view showing a wiring substrate according to one embodiment.

[0029] Figure 2A This is an enlarged top view showing one embodiment of the wiring substrate. Figure 1 (Enlarged view of Part IIA).

[0030] Figure 2B This is an enlarged top view showing one embodiment of the wiring substrate. Figure 1 (Enlarged view of Part IIB).

[0031] Figure 3 This is a cross-sectional view of a wiring substrate illustrating one embodiment. Figure 2A (Sectional view along line III-III).

[0032] Figure 4 This is a cross-sectional view of a wiring substrate illustrating one embodiment. Figure 2A (Sectional view along line IV-IV).

[0033] Figure 5 This is a cross-sectional view of a wiring substrate illustrating one embodiment. Figure 2A (VV-line sectional view).

[0034] Figure 6A This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0035] Figure 6B This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0036] Figure 6C This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0037] Figure 6D This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0038] Figure 6E This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0039] Figure 6F This is a cross-sectional view illustrating a method for manufacturing a wiring substrate according to one embodiment.

[0040] Figure 7 This is a top view illustrating one embodiment of an image display device.

[0041] Figure 8 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0042] Figure 9 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0043] Figure 10 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment (with...). Figure 2A (Corresponding diagram).

[0044] Figure 11 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment (with...). Figure 2A (Corresponding diagram).

[0045] Figure 12 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment (with...). Figure 2A (Corresponding diagram).

[0046] Figure 13 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment (with...). Figure 2A (Corresponding diagram).

[0047] Figure 14 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment.

[0048] Figure 15 This is an enlarged top view showing a modified example of a wiring substrate according to one embodiment.

[0049] Figure 16 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0050] Figure 17 This is an enlarged top view showing one embodiment of the wiring substrate. Figure 16 (Enlarged view of part XVII).

[0051] Figure 18 This is a top view showing a modified example of an image display device according to one embodiment.

[0052] Figure 19 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0053] Figure 20 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0054] Figure 21 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0055] Figure 22 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0056] Figure 23 This is a top view showing a modified example of a wiring substrate according to one embodiment.

[0057] Figure 24 This is a top view showing a modified example of a wiring substrate according to one embodiment. Detailed Implementation

[0058] First, according to Figures 1 to 7 One implementation method will be described. Figures 1 to 7 This is a diagram illustrating this embodiment.

[0059] The figures shown below are schematic representations. Therefore, for ease of understanding, the size and shape of each part have been appropriately exaggerated. Furthermore, modifications and implementations can be made appropriately without departing from the technical concept. In addition, in the figures shown below, the same reference numerals are used for the same parts, and sometimes detailed descriptions are omitted. Furthermore, the dimensions and material names of the components described in this specification are examples of embodiments, but are not limiting; appropriate selections can be made. In this specification, terms defining shape or geometric conditions, such as parallel, orthogonal, and perpendicular, are interpreted in addition to their strict meaning, including substantially the same state.

[0060] In this embodiment, the "X direction" is a direction perpendicular to the long side of the wiring pattern area, and is a direction perpendicular to the length direction corresponding to the frequency band of the antenna wiring. The "Y direction" is a direction perpendicular to the X direction and parallel to the long side of the wiring pattern area, and is also parallel to the length direction corresponding to the frequency band of the antenna wiring. The "Z direction" is a direction perpendicular to both the X and Y directions and parallel to the thickness direction of the wiring substrate. Furthermore, "front side" refers to the surface on the positive side of the Z direction, which is the surface on which the antenna wiring is provided. "Back side" refers to the surface on the negative side of the Z direction, which is the surface opposite to the surface on which the antenna wiring is provided. In this embodiment, the wiring pattern area 20 is described as an antenna pattern area 20 with radio wave transceiver function (functioning as an antenna), but the wiring pattern area 20 may also not have radio wave transceiver function (functioning as an antenna).

[0061] [Structure of Wiring Substrate]

[0062] Reference Figures 1 to 5 The structure of the wiring substrate in this embodiment will be described. Figures 1 to 5 This is a diagram showing the wiring substrate of this embodiment.

[0063] like Figure 1 As shown, the wiring substrate 10 of this embodiment is disposed, for example, on a display of an image display device. Such a wiring substrate 10 includes: a transparent substrate 11; an antenna pattern region (wiring pattern region) 20 disposed on the substrate 11; and a plurality of dummy pattern regions 30 disposed on the substrate 11 around the antenna pattern region 20. Furthermore, a power supply unit 40 is electrically connected to the antenna pattern region 20.

[0064] The substrate 11, when viewed from above, is approximately rectangular in shape, with its long side parallel to the Y-direction and its short side parallel to the X-direction. The substrate 11 is transparent and approximately flat, with a generally uniform thickness. The length L1 of the substrate 11 in the long side direction (Y-direction) can be selected, for example, within a range of 100 mm to 200 mm, and the length L2 of the substrate 11 in the short side direction (X-direction) can be selected, for example, within a range of 50 mm to 100 mm.

[0065] The substrate 11 can be made of any material that is transparent in the visible light region and electrically insulating. In this embodiment, the substrate 11 is made of polyethylene terephthalate, but it is not limited to this. For example, organic insulating materials such as polyester resins like polyethylene terephthalate, acrylic resins like polymethyl methacrylate, polycarbonate resins, polyimide resins, polyolefin resins like cyclic olefin polymers, and cellulose resins like triacetyl cellulose are preferred as the substrate 11. Alternatively, organic insulating materials such as cyclic olefin polymers (e.g., ZF-16 manufactured by ZEON Corporation of Japan) and polynorbornene polymers (manufactured by Sumitomo Bakelite Corporation) can also be used as the substrate 11. Furthermore, glass, ceramics, etc., can be appropriately selected as the substrate 11 material depending on the application. Furthermore, the illustration shows an example where the substrate 11 is composed of a single layer, but it is not limited to this; it can also be a structure with multiple substrates or layers stacked. Additionally, the substrate 11 can be in the form of a film or a plate. Therefore, the thickness of substrate 11 is not particularly limited and can be appropriately selected according to the application. As an example, the thickness T1 of substrate 11 (length in the Z direction, refer to...) Figure 3 For example, it can be set to a range of 10μm or more and 200μm or less.

[0066] Furthermore, the dielectric loss tangent of the substrate 11 can be 0.002 or less, preferably 0.001 or less. The lower limit of the dielectric loss tangent of the substrate 11 is not particularly limited, but it can also be greater than 0. By setting the dielectric loss tangent of the substrate 11 to the above range, especially when the electromagnetic waves (e.g., millimeter waves) transmitted and received in the antenna pattern region 20 are high-frequency, the loss of gain (sensitivity) associated with the transmission and reception of electromagnetic waves can be reduced. The lower limit of the dielectric loss tangent of the substrate 11 is not particularly limited. The relative permittivity of the substrate 11 is not particularly limited, and can be 2.0 or more and 10.0 or less.

[0067] The dielectric loss tangent of substrate 11 can be measured according to IEC 62562. Specifically, firstly, a test piece is prepared by cutting out the portion of substrate 11 without the antenna pattern region 20. Alternatively, the substrate 11 with the antenna pattern region 20 can be cut out, and the antenna pattern region 20 can be removed by etching or the like. The test piece has a width of 10 mm to 20 mm and a length of 50 mm to 100 mm. Next, the dielectric loss tangent is measured according to IEC 62562. The relative permittivity and dielectric loss tangent of substrate 11 can also be measured according to ASTM D150.

[0068] Furthermore, the substrate 11 is transparent. In this specification, "transparent" means that the transmittance of visible light (light with a wavelength of 400 nm or more and 700 nm or less) is 85% or more. The transmittance of visible light (light with a wavelength of 400 nm or more and 700 nm or less) of the substrate 11 can be 85% or more, preferably 90% or more. Furthermore, there is no particular upper limit to the transmittance of visible light of the substrate 11, for example, it can be 100% or less. By setting the transmittance of visible light of the substrate 11 to the above range, the transparency of the wiring substrate 10 can be improved, thereby making it easier to see the display 91 of the image display device 90 (described later). Visible light refers to light with a wavelength of 400 nm or more and 700 nm or less. Furthermore, a transmittance of 85% or more for visible light means that when the absorbance of the substrate 11 is measured using a known spectrophotometer (e.g., the V-670 spectrometer manufactured by Nippon Spectrophotometer Co., Ltd.), the transmittance is 85% or more in the entire wavelength range of 400 nm to 700 nm.

[0069] exist Figure 1 In this embodiment, there are multiple (3) antenna pattern regions 20 on the substrate 11, each corresponding to a different frequency band. That is, regarding the multiple antenna pattern regions 20, their length (length in the Y direction) L... a Each is different, and each has a length corresponding to a specific frequency band. Furthermore, the lower the frequency band, the longer the length L of the antenna pattern area 20. a The longer. The wiring substrate 10 is, for example, disposed on the display 91 of the image display device 90 (see below). Figure 7In the case where the wiring substrate 10 has radio wave transceiver functionality, each antenna pattern area 20 can correspond to any of the following: telephone antenna, WiFi antenna, 3G antenna, 4G antenna, 5G antenna, LTE antenna, Bluetooth antenna, NFC antenna, etc. Alternatively, if the wiring substrate 10 does not have radio wave transceiver functionality, each antenna pattern area 20 can still function as, for example, hovering (allowing the user to operate the display without directly touching it), fingerprint authentication, a heater, or noise cancellation (shielding). Furthermore, the antenna pattern area 20 may not exist on the entire surface of the substrate 11, but only in a portion of the substrate 11.

[0070] Each antenna pattern region 20 has a quadrilateral shape when viewed from above. In this embodiment, each antenna pattern region 20 is approximately rectangular when viewed from above. The long side of each antenna pattern region 20 is parallel to the Y-direction, and its short side is parallel to the X-direction. The length L of each antenna pattern region 20 in the long side direction (Y-direction) is... a For example, the width W of each antenna pattern area 20 in the short side direction (X direction) can be selected within a range of 3mm to 100mm. a For example, the selection range can be between 1 mm and 10 mm. Specifically, the antenna pattern region 20 can function as a millimeter-wave antenna. When the antenna pattern region 20 is a millimeter-wave antenna, the length L of the antenna pattern region 20... a It can be selected within a range of 1mm or more and 10mm or less, more preferably 1.5mm or more and 5mm or less.

[0071] The metal lines in the antenna pattern region 20 are formed into a grid shape or a mesh shape, with a uniformly repeating pattern in both the X and Y directions. That is, as shown... Figure 2A and Figure 2B As shown, the antenna pattern area 20 is formed by an L-shaped unit pattern shape 20a ( Figure 2A and Figure 2B The L-shaped unit pattern shape 20a is formed by repeating the shaded portion, which is composed of a portion extending along the X direction (a portion of the antenna connection wiring 22 described later) and a portion extending along the Y direction (a portion of the antenna wiring 21 described later).

[0072] like Figure 2A and Figure 2BAs shown, each antenna pattern area 20 includes: multiple antenna wirings (wirings) 21 that function as antennas; and multiple antenna connecting wirings (connecting wirings) 22 that connect the multiple antenna wirings 21. Specifically, the multiple antenna wirings 21 and the multiple antenna connecting wirings 22 are integrated as a whole, forming a regular grid shape or mesh shape. Each antenna wiring 21 extends in a direction (Y direction) corresponding to the frequency band of the antenna, and each antenna connecting wiring 22 extends in a direction orthogonal to the antenna wirings 21 (X direction). The antenna wirings 21 have a length L corresponding to a specified frequency band. a (The length of the antenna pattern area 20 mentioned above) thus primarily functions as an antenna. On the other hand, the antenna connection wiring 22 connects these antenna wirings 21 to each other, thereby suppressing adverse situations such as broken antenna wirings 21 or no electrical connection between antenna wirings 21 and power supply unit 40.

[0073] In each antenna pattern area 20, multiple openings 23 are formed by being surrounded by adjacent antenna wirings 21 and adjacent antenna connection wirings 22. Furthermore, the antenna wirings 21 and antenna connection wirings 22 are arranged at equal intervals. That is, the multiple antenna wirings 21 are arranged at equal intervals, with a spacing P1 (refer to...) Figure 2A For example, the range can be set to 0.01 mm or more and 1 mm or less. Furthermore, multiple antenna connection wirings 22 are arranged at equal intervals, with a spacing P2 (refer to...) Figure 2A For example, the size can be set to a range of 0.01 mm or more and 1 mm or less. In this way, by arranging the multiple antenna wirings 21 and the multiple antenna connecting wirings 22 at equal intervals, the size of the opening 23 within each antenna pattern area 20 is consistent, making the antenna pattern area 20 difficult to see with the naked eye. Furthermore, the spacing P1 of the antenna wirings 21 is equal to the spacing P2 of the antenna connecting wirings 22. Therefore, each opening 23 is approximately square when viewed from above, and the transparent substrate 11 is exposed from each opening 23. Therefore, by increasing the area of ​​each opening 23, the overall transparency of the wiring substrate 10 can be improved. In addition, the length L3 of one side of each opening 23 (refer to...) Figure 2A For example, the range can be set to 0.01 mm or more and 1 mm or less. Furthermore, each antenna wiring 21 and each antenna connecting wiring 22 are orthogonal to each other, but are not limited to this; they can also intersect each other at acute or obtuse angles. Additionally, the shape of the opening 23 is preferably the same shape and size across the entire surface, but it can also be changed depending on its position, resulting in unevenness across the entire surface.

[0074] like Figure 3As shown, the cross-section (X-direction cross-section) of each antenna wiring 21 perpendicular to its long side is approximately rectangular or approximately square. In this case, the cross-sectional shape of the antenna wiring 21 is approximately uniform along the long side direction (Y-direction) of the antenna wiring 21. Furthermore, as... Figure 4 As shown, the cross-section (Y-direction cross-section) of each antenna connection wiring 22 perpendicular to its length direction is approximately rectangular or approximately square, and is approximately the same as the cross-section (X-direction cross-section) of the antenna wiring 21. In this case, the cross-sectional shape of the antenna connection wiring 22 is approximately uniform along the long side direction (X-direction) of the antenna connection wiring 22. The cross-sectional shapes of the antenna wiring 21 and the antenna connection wiring 22 do not necessarily have to be approximately rectangular or approximately square; for example, they can be approximately trapezoidal with the front side (positive Z-direction side) narrower than the back side (negative Z-direction side), or shapes with curved sides on both sides in the width direction.

[0075] In this embodiment, the linewidth W1 (length in the X direction, referring to...) of the antenna wiring 21 is... Figure 3 The line width W2 (length in the Y direction, referring to the antenna connection wiring 22) and antenna connection wiring 22 Figure 4 There are no particular limitations, and the appropriate width can be selected according to the application. For example, the linewidth W1 of antenna wiring 21 can be selected within the range of 0.1 μm to 5.0 μm, and the linewidth W2 of antenna connection wiring 22 can be selected within the range of 0.1 μm to 5.0 μm. Additionally, the height H1 of antenna wiring 21 (length in the Z direction, refer to...) Figure 3 The height H2 (length in the Z direction, referring to the antenna connection wiring 22) and the antenna connection wiring 22 Figure 4 There are no particular limitations; the appropriate size can be selected based on the intended use. For example, a size within the range of 0.1 μm to 5.0 μm can be chosen.

[0076] The antenna wiring 21 and antenna connection wiring 22 can be made of any conductive metallic material. In this embodiment, the material of antenna wiring 21 and antenna connection wiring 22 is copper, but it is not limited to this. For example, the material of antenna wiring 21 and antenna connection wiring 22 can be metallic materials (including their alloys) such as gold, silver, copper, platinum, tin, aluminum, iron, nickel, etc.

[0077] Furthermore, as described above, the wiring substrate 10 has a plurality of dummy pattern regions 30. Referring again... Figure 1Each dummy pattern region 30 is arranged to surround the periphery of each antenna pattern region 20, and is formed to surround the entire circumferential area (positive X-direction, negative X-direction, positive Y-direction) of each antenna pattern region 20 except for the side of the power supply section 40 (negative Y-direction). In this case, the dummy pattern regions 30 are arranged on the substrate 11 covering approximately the entire area except for the antenna pattern regions 20 and the power supply section 40. Unlike the antenna pattern regions 20, the dummy pattern regions 30 do not substantially function as antennas.

[0078] In the illustrated example, the wiring substrate 10 has three dummy pattern regions 30. Specifically, the wiring substrate 10 has a first dummy pattern region 301 adjacent to the antenna pattern region 20, a second dummy pattern region 302 adjacent to the first dummy pattern region 301, and a third dummy pattern region 303 adjacent to the second dummy pattern region 302. The second dummy pattern region 302 is located further away from the antenna pattern region 20 than the first dummy pattern region 301 and surrounds the first dummy pattern region 301. Similarly, the third dummy pattern region 303 is located further away from the antenna pattern region 20 than the second dummy pattern region 302 and surrounds the second dummy pattern region 302. Furthermore, the number of dummy pattern regions 30 provided by the wiring substrate 10 is arbitrary; for example, it can be approximately two or more and less than 50, or approximately two or more and less than 10.

[0079] The first dummy pattern region 301 has a pair of first portions 301A extending along the Y direction and a second portion 301B extending between the first portions 301A along the X direction. The width W of the first portion 301A in the short side direction (X direction) is... a1 For example, it can be selected within a range of 0.1 mm to 50 mm, preferably within a range of 0.2 mm to 10 mm. The width W of part 301B in the short side direction (Y direction) a2 For example, it can be selected within a range of 0.1 mm to 50 mm, preferably within a range of 0.2 mm to 10 mm.

[0080] The second dummy pattern region 302 has a pair of first portions 302A extending along the Y direction and a second portion 302B extending between the first portions 302A along the X direction. The width W of the first portion 302A in the short side direction (X direction) is... a3 For example, the width can be selected within a range of 0.1 mm to 50 mm, preferably within a range of 0.2 mm to 10 mm. The width W of part 302B in the short side direction (Y direction) is... a4For example, it can be selected within a range of 0.1 mm to 50 mm, preferably within a range of 0.2 mm to 10 mm.

[0081] Here, the width W of the first part 302A of the second dummy pattern area 302 is... a3 It can also be compared to the width W of the first part 301A of the first dummy pattern area 301. a1 Larger. As described later, in this embodiment, the aperture ratio A22 of the second dummy pattern region 302 is larger than the aperture ratio A21 of the first dummy pattern region 301. Therefore, by making the width W of the first portion 302A of the second dummy pattern region 302 larger... a3 The width W of the first part 301A of the first dummy pattern area 301 is greater than that of the first part 301A. a1 A larger aperture ratio can increase the overall aperture ratio of the wiring substrate 10, thereby improving the transparency of the wiring substrate 10. Similarly, the width W of the second part 302B... a4 It can also be greater than the width W of the second part 301B of the first dummy pattern area 301. a2 This increases the overall aperture ratio of the wiring substrate 10, thereby improving the transparency of the wiring substrate 10.

[0082] The third dummy pattern region 303 is provided in a manner that surrounds the plurality of antenna pattern regions 20. In the illustrated example, the third dummy pattern region 303 is provided in a manner that surrounds all the antenna pattern regions 20. As a result, the plurality of antenna pattern regions 20 can be effectively made difficult to see. The third dummy pattern region 303 is arranged on the substrate 11 in a manner that covers approximately the entire area except for the antenna pattern regions 20, the first dummy pattern region 301, the second dummy pattern region 302, and the power supply section 40.

[0083] like Figure 2A and Figure 2B As shown, multiple dummy pattern regions 301, 302, and 303 each contain multiple dummy wires 301a, 302a, and 303a that are electrically independent of the antenna wiring 21 (antenna wiring 21 and antenna connection wiring 22). Specifically, the first dummy pattern region 301 is formed by repeating dummy wires 301a with a defined unit pattern shape, the second dummy pattern region 302 is formed by repeating dummy wires 302a with a defined unit pattern shape, and the third dummy pattern region 303 is formed by repeating dummy wires 303a with a defined unit pattern shape. That is, each dummy pattern region 301, 302, and 303 contains multiple dummy wires 301a, 302a, and 303a of the same shape, and each dummy wire 301a, 302a, and 303a is electrically independent of the antenna pattern region 20.

[0084] Multiple dummy wirings 301a are regularly arranged throughout the entire area of ​​the first dummy pattern area 301, multiple dummy wirings 302a are regularly arranged throughout the entire area of ​​the second dummy pattern area 302, and multiple dummy wirings 303a are regularly arranged throughout the entire area of ​​the third dummy pattern area 303. The multiple dummy wirings 301a, 302a, and 303a are separated from each other in the planar direction and protrude from the substrate 11 in an island-like arrangement. That is, each dummy wiring 301a, 302a, and 303a is electrically independent from the antenna pattern area 20, the power supply section 40, and other dummy wirings.

[0085] Furthermore, the multiple dummy wirings 301a, 302a, and 303a each have a first dummy wiring portion 311, 312, and 313, and a second dummy wiring portion 321, 322, and 323, respectively. Moreover, as... Figure 2A As shown, the first dummy wiring portions 311, 312, and 313 of adjacent dummy pattern regions 301, 302, and 303 are arranged parallel to each other. For example, the first dummy wiring portion 311 of the first dummy pattern region 301 and the first dummy wiring portion 312 of the second dummy pattern region 302 are arranged parallel to each other. Therefore, the difference between the first dummy pattern region 301 and the second dummy pattern region 302 is difficult to see in the Y direction. Furthermore, the first dummy wiring portion 312 of the second dummy pattern region 302 and the first dummy wiring portion 313 of the third dummy pattern region 303 are arranged parallel to each other. Therefore, the difference between the second dummy pattern region 302 and the third dummy pattern region 303 is difficult to see in the Y direction.

[0086] In addition, such as Figure 2A As shown, the antenna wiring 21 of the antenna pattern region 20 is arranged parallel to the first dummy wiring portions 311, 312, and 313 of each dummy pattern region 301, 302, and 303. Therefore, in the Y direction, the difference between the antenna pattern region 20 and each dummy pattern region 301, 302, and 303 is difficult to see.

[0087] In addition, such as Figure 2BAs shown, the second dummy wiring portions 321, 322, and 323 of adjacent dummy pattern regions 301, 302, and 303 are arranged parallel to each other. For example, the second dummy wiring portion 321 of the first dummy pattern region 301 and the second dummy wiring portion 322 of the second dummy pattern region 302 are arranged parallel to each other. Therefore, the difference between the first dummy pattern region 301 and the second dummy pattern region 302 is difficult to see in the X direction. Furthermore, the second dummy wiring portion 322 of the second dummy pattern region 302 and the second dummy wiring portion 323 of the third dummy pattern region 303 are arranged parallel to each other. Therefore, the difference between the second dummy pattern region 302 and the third dummy pattern region 303 is difficult to see in the X direction.

[0088] In addition, such as Figure 2B As shown, the antenna connection wiring 22 of the antenna pattern region 20 is arranged parallel to the second dummy wiring portions 321, 322, and 323 of each dummy pattern region 301, 302, and 303. Therefore, in the X direction, the difference between the antenna pattern region 20 and each dummy pattern region 301, 302, and 303 is difficult to see.

[0089] Next, the dummy wirings 301a, 302a, and 303a will be explained in more detail. Here, the dummy wiring 301a of the first dummy pattern area 301 will be explained first.

[0090] (Dummy wiring in the first dummy pattern area)

[0091] like Figure 2A and Figure 2B As shown, the dummy wiring 301a is roughly L-shaped when viewed from above, having a first dummy wiring portion 311 extending along the Y direction and a second dummy wiring portion 321 extending along the X direction. The first dummy wiring portion 311 has a predetermined length L4 (length in the Y direction, referring to...). Figure 2A The second dummy wiring section 321 has a specified length L5 (length in the X direction, refer to...). Figure 2A They are equal to each other (L4 = L5).

[0092] Furthermore, in the first dummy pattern region 301, gaps 331a are formed between each other in the dummy wirings 301a that are adjacent to each other along the X direction. Figure 2A and Figure 2B The shaded area), gaps 331b are formed between each other in the dummy wirings 301a that are adjacent to each other along the Y direction. Figure 2A and Figure 2B(The shaded area). In this case, the dummy wirings 301a are arranged at equal intervals. That is, the dummy wirings 301a adjacent to each other in the X direction are arranged at equal intervals, and their gap G1 can be set to a range of 1 μm or more and 20 μm or less, for example. Similarly, the dummy wirings 301a adjacent to each other in the Y direction are arranged at equal intervals, and their gap G2 can be set to a range of 1 μm or more and 20 μm or less, for example. Furthermore, the maximum values ​​of gaps G1 and G2 can be set to 0.8 times or less of the aforementioned spacings P1 and P2, respectively. In this case, the gap G1 of the dummy wirings 301a in the X direction is equal to the gap G2 of the dummy wirings 301a in the Y direction (G1 = G2).

[0093] In this embodiment, the dummy wiring 301a has a shape formed by a partial absence of the unit pattern shape 20a of the antenna pattern region 20. That is, the shape of the dummy wiring 301a is the shape obtained by removing the aforementioned gaps 331a and 331b from the L-shaped unit pattern shape 20a of the antenna pattern region 20. In other words, the shape formed by combining the plurality of dummy wirings 301a and the plurality of gaps 331a and 331b of the first dummy pattern region 301 is equivalent to the grid shape or mesh shape of the antenna pattern region 20. In this way, the dummy wiring 301a of the first dummy pattern region 301 is a shape formed by a partial absence of the unit pattern shape 20a of the antenna pattern region 20, thereby making the difference between the antenna pattern region 20 and the first dummy pattern region 301 difficult to see, and thus making it difficult to see the antenna pattern region 20 disposed on the substrate 11.

[0094] exist Figure 2A In this configuration, the antenna pattern region 20 and the first dummy pattern region 301 are adjacent in the Y direction. Near the boundary between the antenna pattern region 20 and the first dummy pattern region 301, the first dummy wiring portion 311 is formed on the extension line of the antenna wiring 21. Therefore, the difference between the antenna pattern region 20 and the first dummy pattern region 301 is difficult to see in the Y direction.

[0095] In addition, Figure 2B In this configuration, the antenna pattern region 20 and the first dummy pattern region 301 are adjacent in the X direction. Near the boundary between the antenna pattern region 20 and the first dummy pattern region 301, a second dummy wiring portion 321 is formed on the extension line of the antenna connecting wiring 22. Therefore, the difference between the antenna pattern region 20 and the first dummy pattern region 301 is difficult to see in the X direction.

[0096] like Figure 5 As shown, the cross-section (X-direction cross-section) perpendicular to the long side direction (Y-direction) of the first dummy wiring portion 311 of each dummy wiring 301a is approximately rectangular or approximately square. Additionally, as... Figure 4 As shown, the cross-section (Y-direction cross-section) of the second dummy wiring portion 321 of each dummy wiring 301a perpendicular to its long side direction (X direction) is approximately rectangular or approximately square. In this case, the cross-sectional shape of the first dummy wiring portion 311 is approximately the same as the cross-sectional shape of the antenna wiring 21, and the cross-sectional shape of the second dummy wiring portion 321 is approximately the same as the cross-sectional shape of the antenna connection wiring 22.

[0097] In this embodiment, the line width W3 (length in the X direction, referring to the length of the first dummy wiring portion 311) is... Figure 5 The linewidth W1 of the second dummy wiring section 321 is approximately the same as that of the antenna wiring 21. The linewidth W4 of the second dummy wiring section 321 is the length in the Y direction, refer to... Figure 4 The linewidth W2 of the antenna connection wiring 22 is approximately the same. Additionally, the height H3 of the first dummy wiring portion 311 (length in the Z direction, refer to...) Figure 5 The height H4 of the second dummy wiring section 321 (length in the Z direction, refer to...) and the length of the second dummy wiring section 321 in the Z direction (refer to...) Figure 4 The heights of the antenna wiring 21 and antenna connection wiring 22 are approximately the same, respectively.

[0098] Next, the dummy wiring 302a of the second dummy pattern area 302 will be explained.

[0099] (Dummy wiring in the second dummy pattern area)

[0100] like Figure 2A and Figure 2B As shown, the dummy wiring 302a is approximately L-shaped when viewed from above, having a first dummy wiring portion 312 extending along the Y direction and a second dummy wiring portion 322 extending along the X direction. The first dummy wiring portion 312 has a predetermined length L6 (length in the Y direction, referring to...). Figure 2A The second dummy wiring section 322 has a specified length L7 (length in the X direction, refer to...). Figure 2A They are equal to each other (L6 = L7).

[0101] Furthermore, in the second dummy pattern region 302, gaps 332a are formed between adjacent dummy wirings 302a along the X direction. Figure 2A and Figure 2B The shaded area), gaps 332b are formed between each other in the dummy wirings 302a that are adjacent to each other along the Y direction. Figure 2A and Figure 2B(The shaded area). In this case, the dummy wirings 302a are arranged at equal intervals. That is, the dummy wirings 302a adjacent to each other in the X direction are arranged at equal intervals, and their gap G3 can be set to, for example, a range of 2 μm or more and 40 μm or less. Similarly, the dummy wirings 302a adjacent to each other in the Y direction are arranged at equal intervals, and their gap G4 can be set to, for example, a range of 2 μm or more and 40 μm or less. Furthermore, the maximum values ​​of gaps G3 and G4 can also be set to 0.64 times or less of the aforementioned spacings P1 and P2, respectively. In this case, the gap G3 of the dummy wirings 302a in the X direction is equal to the gap G4 of the dummy wirings 302a in the Y direction (G3 = G4).

[0102] In this embodiment, the dummy wiring 302a has a shape formed by a partial absence of the aforementioned dummy wiring 301a. That is, the dummy wiring 302a has a shape formed by a partial absence of the unit pattern shape 20a of the antenna pattern region 20. In this case, the shape of the dummy wiring 302a becomes the shape obtained by removing the aforementioned gaps 332a and 332b from the L-shaped unit pattern shape 20a of the antenna pattern region 20. That is, the shape obtained by merging the plurality of dummy wirings 302a and the plurality of gaps 332a and 332b of the second dummy pattern region 302 is equivalent to the grid shape or mesh shape forming the antenna pattern region 20. In this way, the dummy wiring 302a of the second dummy pattern region 302 is a shape formed by the absence of a portion of the dummy wiring 301a of the first dummy pattern region 301. This makes it difficult to see the difference between the first dummy pattern region 301 and the second dummy pattern region 302, thereby making it difficult to see the first dummy pattern region 301 and the second dummy pattern region 302 disposed on the substrate 11.

[0103] exist Figure 2A In the diagram, the first dummy pattern region 301 and the second dummy pattern region 302 are adjacent in the Y direction. Near the boundary between the first dummy pattern region 301 and the second dummy pattern region 302, the first dummy wiring portion 312 of the second dummy pattern region 302 is formed on the extension line of the first dummy wiring portion 311 of the first dummy pattern region 301. Therefore, the difference between the first dummy pattern region 301 and the second dummy pattern region 302 is difficult to see in the Y direction. Furthermore, in the illustrated example, the first dummy wiring portion 311 adjacent to the boundary line B1 of the first dummy pattern region 301 and the second dummy pattern region 302, and the first dummy wiring portion 312 adjacent to the boundary line B1, are separated from each other, but this is not a limitation. For example, although not illustrated, the first dummy wiring portion 311 adjacent to the boundary line B1 and the first dummy wiring portion 312 adjacent to the boundary line B1 may also be connected.

[0104] In addition, Figure 2B In the diagram, the first dummy pattern region 301 and the second dummy pattern region 302 are adjacent in the X direction. Near the boundary between the first dummy pattern region 301 and the second dummy pattern region 302, the second dummy wiring portion 322 of the second dummy pattern region 302 is formed on the extension line of the second dummy wiring portion 321 of the first dummy pattern region 301. Therefore, in the X direction, the difference between the first dummy pattern region 301 and the second dummy pattern region 302 is difficult to see. Furthermore, in the illustrated example, the second dummy wiring portion 321 adjacent to the boundary line B1 of the first dummy pattern region 301 and the second dummy pattern region 302, and the second dummy wiring portion 322 adjacent to the boundary line B1 are separated from each other, but this is not a limitation. For example, although not illustrated, the second dummy wiring portion 321 adjacent to the boundary line B1 and the second dummy wiring portion 322 adjacent to the boundary line B1 may also be connected.

[0105] Furthermore, in this embodiment, the other shapes (cross-sectional shape, line width, and height in the X-direction section) of the first dummy wiring portion 312 of the second dummy pattern region 302 are substantially the same as the shape of the first dummy wiring portion 311 of the first dummy pattern region 301, so detailed descriptions are omitted here. Additionally, the other shapes (cross-sectional shape, line width, and height in the Y-direction section) of the second dummy wiring portion 322 of the second dummy pattern region 302 are substantially the same as the shape of the second dummy wiring portion 321 of the first dummy pattern region 301, so detailed descriptions are omitted here.

[0106] Next, the dummy wiring 303a of the third dummy pattern area 303 will be explained.

[0107] (Dummy wiring in the third dummy pattern area)

[0108] like Figure 2A and Figure 2B As shown, the dummy wiring 303a is roughly L-shaped when viewed from above, having a first dummy wiring portion 313 extending along the Y direction and a second dummy wiring portion 323 extending along the X direction. The first dummy wiring portion 313 has a predetermined length L8 (length in the Y direction, referring to...). Figure 2A The second dummy wiring section 323 has a specified length L9 (length in the X direction, refer to...). Figure 2A They are equal to each other (L8 = L9).

[0109] Furthermore, in the third dummy pattern region 303, gaps 333a are formed between adjacent dummy wirings 303a along the X direction. Figure 2A and Figure 2BThe shaded area), gaps 333b are formed between the dummy wirings 303a that are adjacent to each other along the Y direction. Figure 2A and Figure 2B (The shaded area). In this case, the dummy wirings 303a are arranged at equal intervals. That is, the dummy wirings 303a adjacent to each other in the X direction are arranged at equal intervals, and their gap G5 can be set to a range of 6 μm or more and 60 μm or less, for example. Similarly, the dummy wirings 303a adjacent to each other in the Y direction are arranged at equal intervals, and their gap G6 can be set to a range of 6 μm or more and 60 μm or less, for example. Furthermore, the maximum values ​​of gaps G5 and G6 can be set to 0.51 times or less of the aforementioned spacings P1 and P2, respectively. In this case, the gap G5 of the dummy wirings 303a in the X direction is equal to the gap G6 of the dummy wirings 303a in the Y direction (G5 = G6).

[0110] In this embodiment, the dummy wiring 303a has a shape formed by a partial absence of the aforementioned dummy wiring 302a. That is, the dummy wiring 303a has a shape formed by a partial absence of the unit pattern shape 20a of the antenna pattern region 20. In this case, the shape of the dummy wiring 303a becomes the shape obtained by removing the aforementioned gaps 333a and 333b from the L-shaped unit pattern shape 20a of the antenna pattern region 20. That is, the shape obtained by merging the plurality of dummy wirings 303a and the plurality of gaps 333a and 333b of the third dummy pattern region 303 is equivalent to the grid shape or mesh shape forming the antenna pattern region 20. In this way, the dummy wiring 303a of the third dummy pattern region 303 is a shape formed by missing a part of the dummy wiring 302a of the second dummy pattern region 302. This makes it difficult to see the difference between the second dummy pattern region 302 and the third dummy pattern region 303, thereby making it difficult to see the second dummy pattern region 302 and the third dummy pattern region 303 disposed on the substrate 11.

[0111] exist Figure 2AIn the diagram, the second dummy pattern region 302 and the third dummy pattern region 303 are adjacent in the Y direction. Near the boundary between the second dummy pattern region 302 and the third dummy pattern region 303, the first dummy wiring portion 313 of the third dummy pattern region 303 is formed on the extension line of the first dummy wiring portion 312 of the second dummy pattern region 302. Therefore, the difference between the second dummy pattern region 302 and the third dummy pattern region 303 is difficult to see in the Y direction. Furthermore, in the illustrated example, the first dummy wiring portion 312 adjacent to the boundary line B2 of the second dummy pattern region 302 and the third dummy pattern region 303, and the first dummy wiring portion 313 adjacent to the boundary line B2, are separated from each other, but this is not a limitation. For example, although not illustrated, the first dummy wiring portion 312 adjacent to the boundary line B2 and the first dummy wiring portion 313 adjacent to the boundary line B2 may also be connected.

[0112] In addition, Figure 2B In the diagram, the second dummy pattern region 302 and the third dummy pattern region 303 are adjacent in the X direction. Near the boundary between the second dummy pattern region 302 and the third dummy pattern region 303, the second dummy wiring portion 323 of the third dummy pattern region 303 is formed on the extension line of the second dummy wiring portion 322 of the second dummy pattern region 302. Therefore, the difference between the second dummy pattern region 302 and the third dummy pattern region 303 is difficult to see in the X direction. Furthermore, in the illustrated example, the second dummy wiring portion 322 adjacent to the boundary line B2 of the second dummy pattern region 302 and the third dummy pattern region 303, and the second dummy wiring portion 323 adjacent to the boundary line B2 are separated from each other, but this is not a limitation. For example, although not illustrated, the second dummy wiring portion 322 adjacent to the boundary line B2 and the second dummy wiring portion 323 adjacent to the boundary line B1 can also be connected.

[0113] Furthermore, in this embodiment, the other shapes (cross-sectional shape, line width, and height in the X-direction section) of the first dummy wiring portion 313 of the third dummy pattern region 303 are substantially the same as the shape of the first dummy wiring portion 311 of the first dummy pattern region 301, so detailed descriptions are omitted here. Additionally, the other shapes (cross-sectional shape, line width, and height in the Y-direction section) of the second dummy wiring portion 323 of the third dummy pattern region 303 are substantially the same as the shape of the second dummy wiring portion 321 of the first dummy pattern region 301, so detailed descriptions are omitted here.

[0114] The materials used for the aforementioned dummy wirings 301a, 302a, and 303a can be the same metallic materials used for antenna wiring 21 and antenna connection wiring 22.

[0115] Furthermore, in this embodiment, the antenna pattern region 20, the first dummy pattern region 301, the second dummy pattern region 302, and the third dummy pattern region 303 each have a predetermined aperture ratio A1, A21, A22, and A23, respectively. In this case, the aperture ratio A21 of the first dummy pattern region 301 is greater than or equal to the aperture ratio A1 of the antenna pattern region 20, and the aperture ratio A22 of the second dummy pattern region 302 is greater than the aperture ratio A21 of the first dummy pattern region 301. Thus, in this embodiment, the aperture ratios A1, A21, A22, and A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 gradually increase from the antenna pattern region 20 toward the dummy pattern regions 30 that are farther away from the antenna pattern region 20. That is, the aperture ratio A21 of the first dummy pattern region 301 is greater than the aperture ratio A1 of the antenna pattern region 20, the aperture ratio A22 of the second dummy pattern region 302 is greater than the aperture ratio A21 of the first dummy pattern region 301, and the aperture ratio A23 of the third dummy pattern region 303 is greater than the aperture ratio A22 of the second dummy pattern region 302 (A23>A22>A21≥A1). This ensures the transparency of the wiring substrate 10.

[0116] Furthermore, the difference between the aperture ratio A21 of the first dummy pattern region 301 adjacent to the antenna pattern region 20 and the aperture ratio A1 of the antenna pattern region 20 is preferably 0% or more and 2% or less, more preferably 0.02% or more and 1% or less, and even more preferably 0.08% or more and 0.5% or less. By making the difference between the aperture ratio A21 and the aperture ratio A1 0% or more, the transparency of the wiring substrate 10 can be improved. In addition, by making the difference between the aperture ratio A21 and the aperture ratio A1 2% or less, the difference between the aperture ratio A21 and the aperture ratio A1 can be reduced, thereby making the boundary between the antenna pattern region 20 and the first dummy pattern region 301 difficult to see. Therefore, the presence of the antenna pattern region 20 can be difficult to see with the naked eye. Furthermore, the difference between the aperture ratio A1 of the antenna pattern region 20 and the aperture ratio A1 of the antenna pattern region 20 can also be 0.1% or more and 3% or less.

[0117] Furthermore, the difference between the aperture ratios A21, A22, and A23 of adjacent dummy pattern regions 30 (e.g., the difference between aperture ratio A21 and aperture ratio A22) is preferably 0.02% or more and 2% or less, more preferably 0.04% or more and 1% or less, and even more preferably 0.08% or more and 0.5% or less. By making the difference between aperture ratios A21, A22, and A23 0.02% or more, the transparency of the wiring substrate 10 can be improved. In addition, by making the difference between aperture ratios A21, A22, and A23 2% or less, for example, the difference between aperture ratio A21 and aperture ratio A22 can be reduced, thereby making the boundary between the first dummy pattern region 301 and the second dummy pattern region 302 difficult to see. Since the boundaries of each dummy pattern region 30 can be made difficult to see in this way, the presence of each dummy pattern region 30 can be made difficult to identify with the naked eye. Furthermore, the difference between the aperture ratios A21, A22, and A23 of adjacent dummy pattern regions 30 can be greater than 0.1% and less than 3%.

[0118] The aperture ratio A1 of the aforementioned antenna pattern region 20 can be set to, for example, a range of 85% or more and 99.9% or less. Furthermore, the aperture ratio A21 of the first dummy pattern region 301 can be set to, for example, a range of 85% or more and less than 100%. Additionally, the aperture ratio A22 of the second dummy pattern region 302 can be set to, for example, a range of 86% or more and less than 100%. And, the aperture ratio A23 of the third dummy pattern region 303 can be set to, for example, a range of 86.5% or more and less than 100%.

[0119] Furthermore, the aperture ratio (i.e., the overall aperture ratio of the wiring substrate 10) A3 of the area that combines the antenna pattern area 20 and each dummy pattern area 30 can be set to a range of 87% or more and less than 100%. By setting the aperture ratio A3 to this range, the conductivity and transparency of the wiring substrate 10 can be ensured.

[0120] In addition, the aperture ratio refers to the percentage (%) of the area of ​​the open area (the area where the substrate 11 is exposed due to the absence of metal parts such as antenna wiring 21, antenna connection wiring 22, and dummy wiring 301a, 302a, 303a, etc.) to the unit area of ​​the specified area (antenna pattern area 20, dummy pattern area 30, or antenna pattern area 20 and dummy pattern area 30).

[0121] Refer again Figure 1The power supply unit 40 is electrically connected to the antenna pattern area 20. This power supply unit 40 is constructed from a generally rectangular conductive thin plate-like component. The long side of the power supply unit 40 is parallel to the X-direction, and the short side is parallel to the Y-direction. Furthermore, the power supply unit 40 is disposed at the end of the long side of the substrate 11 (the negative end in the Y-direction). The power supply unit 40 can be made of materials such as gold, silver, copper, platinum, tin, aluminum, iron, nickel, and other metals (including their alloys). This power supply unit 40 is assembled on the wiring substrate 10 onto the image display device 90 (see reference). Figure 7 When the power supply unit 40 is located, it is electrically connected to the wireless communication circuit 92 of the image display device 90. In addition, the power supply unit 40 is provided on the front side of the substrate 11, but it is not limited to this. Alternatively, part or all of the power supply unit 40 may be located on the outer side of the periphery of the substrate 11.

[0122] [Manufacturing method of wiring substrate]

[0123] Next, refer to Figures 6A to 6F The manufacturing method of the wiring substrate of this embodiment will be described. Figures 6A to 6F This is a cross-sectional view showing the manufacturing method of the wiring substrate according to this embodiment.

[0124] First, such as Figure 6A As shown, a transparent substrate 11 is prepared.

[0125] Next, an antenna pattern region 20 comprising a plurality of antenna wirings 21 is formed on the substrate 11; and a plurality of dummy pattern regions 30 disposed around the antenna pattern region 20 and electrically independent of the antenna wirings 21. At this time, a conductive layer 51 is first formed over approximately the entire front surface of the substrate 11. In this embodiment, the thickness of the conductive layer 51 is 200 nm. However, it is not limited to this, and the thickness of the conductive layer 51 can be appropriately selected in the range of 10 nm or more and 1000 nm or less. In this embodiment, the conductive layer 51 is formed using copper and by sputtering. Plasma CVD can also be used as a method for forming the conductive layer 51.

[0126] Next, as Figure 6B As shown, a photocurable insulating resist 52 is supplied to approximately the entire front surface area of ​​the substrate 11. Examples of the photocurable insulating resist 52 include organic resins such as acrylic resins and epoxy resins.

[0127] Next, as Figure 6CAs shown, the insulating layer 54 is formed by photolithography. In this case, a photocurable insulating resist 52 is patterned by photolithography to form an insulating layer 54 (resist pattern) with trenches 54a. The trenches 54a have planar shape patterns corresponding to the antenna wiring 21, the antenna connection wiring 22, and the dummy wirings 301a, 302a, and 303a. Furthermore, the insulating layer 54 is formed in such a way that the conductive layer 51 corresponding to the antenna wiring 21, the antenna connection wiring 22, and the dummy wirings 301a, 302a, and 303a is exposed.

[0128] Furthermore, not limited to this, a groove 54a can be formed on the front side of the insulating layer 54 by an imprinting method. In this case, a transparent imprinting mold having protrusions corresponding to the groove 54a is prepared, and the mold is brought close to the substrate 11. A photocurable insulating resist 52 is spread between the mold and the substrate 11. Then, light is irradiated from the mold side to cure the photocurable insulating resist 52, thereby forming the insulating layer 54. Thus, a groove 54a with the shape of the transferred protrusions is formed on the front side of the insulating layer 54. Afterwards, by peeling the mold off the insulating layer 54, a Figure 6C The insulating layer 54 has a cross-sectional structure shown. Although not shown here, insulating material residue sometimes remains at the bottom of the trenches 54a of the insulating layer 54. Therefore, this insulating material residue is removed by performing a wet treatment using a permanganate solution or N-methyl-2-pyrrolidone, or a dry treatment using oxygen plasma. In this way, by removing the insulating material residue, such as… Figure 6C As shown, a trench 54a can be formed to expose the conductive layer 51.

[0129] Next, as Figure 6D As shown, the trenches 54a of the insulating layer 54 are filled with a conductor 55. In this embodiment, the conductive layer 51 is used as a seed layer, and the trenches 54a of the insulating layer 54 are filled with copper using an electrolytic plating method.

[0130] Next, as Figure 6E As shown, the insulating layer 54 is removed. In this case, the insulating layer 54 on the substrate 11 is removed by wet treatment using a permanganate solution or N-methyl-2-pyrrolidone, an acid or alkali solution, or by dry treatment using oxygen plasma.

[0131] Then, as Figure 6FAs shown, the conductive layer 51 on the front side of the substrate 11 is removed. At this time, the conductive layer 51 is etched by performing a wet treatment using hydrogen peroxide water, thereby exposing the front side of the substrate 11. This results in a wiring substrate 10 having a substrate 11, an antenna pattern region 20 disposed on the substrate 11, and a dummy pattern region 30. In this case, the aperture ratio A21 of the first dummy pattern region 301 is greater than or equal to the aperture ratio A1 of the antenna pattern region 20, and the aperture ratio A22 of the second dummy pattern region 302 is greater than the aperture ratio A21 of the first dummy pattern region 301. Furthermore, the aperture ratio A23 of the third dummy pattern region 303 is greater than the aperture ratio A22 of the second dummy pattern region 302. Additionally, the antenna pattern region 20 includes antenna wiring 21 and antenna connection wiring 22, and the dummy pattern region 30 includes dummy wirings 301a, 302a, and 303a. The aforementioned conductor 55 includes antenna wiring 21, antenna connection wiring 22, and dummy wiring 301a, 302a, and 303a.

[0132] Next, the function of the wiring substrate constructed with such a structure will be explained.

[0133] like Figure 7 As shown, the wiring substrate 10 is assembled onto an image display device 90 having a display (display device) 91. The image display device 90 includes the wiring substrate 10 and the display 91 stacked on the wiring substrate 10. The wiring substrate 10 is disposed on the display 91. Examples of such image display devices 90 include portable terminal devices such as smartphones and tablet computers. The antenna pattern area 20 of the wiring substrate 10 is electrically connected to the wireless communication circuit 92 of the image display device 90 via a power supply unit 40. In this way, radio waves of a specified frequency can be transmitted and received via the antenna pattern area 20, and communication can be performed using the image display device 90. Furthermore, each dummy pattern area 30 is separate from the antenna pattern area 20 and electrically independent, so there is no concern that the presence of each dummy pattern area 30 may affect the transmission and reception of radio waves.

[0134] According to this embodiment, the wiring substrate 10 includes: a transparent substrate 11; and an antenna pattern region 20 disposed on the substrate 11 and including a plurality of antenna wirings 21, thus ensuring the transparency of the wiring substrate 10. As a result, when the wiring substrate 10 is disposed on the display 91, the display 91 can be visually confirmed through the opening 23 of the antenna pattern region 20, and thus the visual confirmation of the display 91 is not hindered.

[0135] Furthermore, multiple dummy pattern regions 30, electrically independent of the antenna wiring 21, are arranged around the antenna pattern region 20. Moreover, the aperture ratio A21 of the first dummy pattern region 301 adjacent to the antenna pattern region 20 is greater than the aperture ratio A1 of the antenna pattern region 20. Additionally, the aperture ratio A22 of the second dummy pattern region 302, adjacent to the first dummy pattern region 301 and farther away from the wiring pattern region 20 than the first dummy pattern region 301, is greater than the aperture ratio A21 of the first dummy pattern region 301. Therefore, the boundaries of the antenna pattern region 20, the first dummy pattern region 301, and the second dummy pattern region 302 are indistinct. Consequently, the antenna pattern region 20, the first dummy pattern region 301, and the second dummy pattern region 302 are difficult to see on the surface of the display 91, and the user of the image display device 90 cannot visually identify the antenna pattern region 20, the first dummy pattern region 301, and the second dummy pattern region 302. Furthermore, since the aperture ratio A21 of the first dummy pattern region 301 is greater than the aperture ratio A1 of the antenna pattern region 20, and the aperture ratio A22 of the second dummy pattern region 302 is greater than the aperture ratio A21 of the first dummy pattern region 301, the overall aperture ratio A3 of the wiring substrate 10 can be improved even when the boundaries of the antenna pattern region 20, the first dummy pattern region 301, and the second dummy pattern region 302 are unclear. Therefore, the conductivity and transparency of the wiring substrate 10 can be ensured.

[0136] Here, to improve antenna performance, it is required to improve the conductivity of the antenna wiring 21. However, to improve the conductivity of the antenna wiring 21, for example, by increasing the linewidth W1 of the antenna wiring 21, the aperture ratio A1 of the antenna pattern region 20 will decrease. In this case, to make the antenna pattern region 20 less visible, it is possible to provide a dummy pattern region around the antenna pattern region 20. On the other hand, if a single dummy pattern region is provided around the antenna pattern region 20 (for example, if a single dummy pattern region is provided on the substrate 11 covering approximately the entire area except for the antenna pattern region 20), if the aperture ratio A1 of the antenna pattern region 20 decreases, then to make the boundary between the antenna pattern region 20 and the dummy pattern region less clear, the aperture ratio of the dummy pattern region must also decrease. On the other hand, if the aperture ratio of the dummy pattern region is reduced, the overall aperture ratio A3 of the wiring substrate 10 decreases, and the wiring substrate 10 may become darker overall. In contrast, according to this embodiment, the wiring substrate 10 includes a plurality of dummy pattern regions 30, wherein the aperture ratio A21 of the first dummy pattern region 301 is greater than the aperture ratio A1 of the antenna pattern region 20, and the aperture ratio A22 of the second dummy pattern region 302 is greater than the aperture ratio A21 of the first dummy pattern region 301. Therefore, even when the aperture ratio A1 of the antenna pattern region 20 is reduced, the boundaries between the antenna pattern region 20, the first dummy pattern region 301, and the second dummy pattern region 302 can be made less distinct, and the overall aperture ratio A3 of the wiring substrate 10 can be increased. Thus, the conductivity and transparency of the wiring substrate 10 can be ensured.

[0137] Furthermore, according to this embodiment, the third dummy pattern region 303 is provided in a manner that surrounds the plurality of antenna pattern regions 20. As a result, the plurality of antenna pattern regions 20 can be effectively made difficult to see.

[0138] Furthermore, according to this embodiment, the plurality of dummy pattern regions 301, 302, and 303 each include a plurality of dummy wires 301a, 302a, and 303a that are electrically independent of the antenna wiring 21. Additionally, the plurality of dummy wires 301a, 302a, and 303a each have a first dummy wire portion 311, 312, and 313 and a second dummy wire portion 321, 322, and 323. Moreover, the first dummy wire portions 311, 312, and 313 of adjacent dummy pattern regions 301, 302, and 303 are arranged parallel to each other. Therefore, in the Y direction, the boundaries of adjacent dummy pattern regions 301, 302, and 303 are made indistinct, making it difficult to visually identify the dummy pattern regions 301, 302, and 303 on the surface of the display 91.

[0139] Furthermore, the second dummy wiring portions 321, 322, and 323 of the adjacent dummy pattern regions 301, 302, and 303 are arranged parallel to each other. As a result, in the X direction, the boundaries of the adjacent dummy pattern regions 301, 302, and 303 are made indistinct, making it difficult to identify the dummy pattern regions 301, 302, and 303 with the naked eye on the surface of the display 91.

[0140] Furthermore, according to this embodiment, the antenna pattern region 20 also includes a plurality of antenna connection lines 22 connecting the plurality of antenna lines 21. Additionally, the plurality of dummy pattern regions 301, 302, and 303 each include a plurality of dummy lines 301a, 302a, and 303a that are electrically independent of the antenna lines 21 and the antenna connection lines 22. Furthermore, the plurality of dummy lines 301a, 302a, and 303a each have a first dummy line portion 311, 312, and 313 and a second dummy line portion 321, 322, and 323. Moreover, the antenna lines 21 of the antenna pattern region 20 and the first dummy line portions 311, 312, and 313 of each dummy pattern region 301, 302, and 303 are arranged parallel to each other. Therefore, in the Y direction, the boundary between the antenna pattern area 20 and each of the dummy pattern areas 301, 302, and 303 is not clear, so that the antenna pattern area 20 and each of the dummy pattern areas 301, 302, and 303 are difficult to identify with the naked eye on the surface of the display 91.

[0141] In addition, such as Figure 2B As shown, the antenna connection wiring 22 of the antenna pattern area 20 is arranged parallel to the second dummy wiring portions 321, 322, and 323 of each dummy pattern area 301, 302, and 303. Therefore, in the X direction, the boundaries between the antenna pattern area 20 and each dummy pattern area 301, 302, and 303 are indistinct, making it difficult to visually identify the antenna pattern area 20 and each dummy pattern area 301, 302, and 303 on the surface of the display 91.

[0142] (Modified Example)

[0143] Next, refer to Figures 8 to 24 Various modifications to the wiring board will be explained. Figures 8 to 24 The diagram shows various variations of the wiring substrate. Figures 8 to 24 In the various variations shown, the structures of the antenna pattern region 20 and / or the dummy pattern region 30 are different, while the other structures are largely the same as those in the embodiments described above. Figures 8 to 24 In the middle, to and Figures 1 to 7 The parts that are the same as those shown are labeled with the same number and detailed explanations are omitted.

[0144] (Variation Example 1)

[0145] Figure 8 The wiring substrate 10A of Modified Example 1 is shown. Figure 8 In this example, the second dummy pattern region 302 is configured to surround multiple antenna pattern regions 20. In the illustrated example, the second dummy pattern region 302 is configured to surround all antenna pattern regions 20. In this case, it is also possible to effectively make the multiple antenna pattern regions 20 difficult to see.

[0146] Furthermore, although not illustrated, the first dummy pattern region 301 can also be configured to surround multiple antenna pattern regions 20. In this case, the first dummy pattern region 301 can also be configured to surround all antenna pattern regions 20.

[0147] (Variation Example 2)

[0148] Figure 9 The wiring substrate 10B of Modified Example 2 is shown. Figure 9 In this embodiment, the wiring substrate 10B also includes a surrounding region 50 disposed around the dummy pattern region 30 (the second dummy pattern region 302 in this modified example) that is furthest from the antenna pattern region 20. Furthermore, the aperture ratio of the surrounding region 50 is 100%. That is, the surrounding region 50 does not contain dummy wiring.

[0149] In this case, the difference in aperture ratio between adjacent dummy pattern regions 30, and the difference in aperture ratio between the surrounding region 50 and the dummy pattern region 30 adjacent to the surrounding region 50, can be 0.02% or more and 2% or less, respectively. By making the above difference 0.02% or more, the transparency of the wiring substrate 10 can be improved. In addition, by making the above difference 2% or less, the boundary between the dummy pattern region 30 and the surrounding region 50 can be made difficult to see. Therefore, the presence of the antenna pattern region 20 can be made difficult to see with the naked eye.

[0150] Thus, since the wiring substrate 10B also has a surrounding region 50 disposed around the dummy pattern region 30 furthest from the antenna pattern region 20, and the aperture ratio of the surrounding region 50 is 100%, the overall aperture ratio A3 of the wiring substrate 10B can be improved. Therefore, the transparency of the wiring substrate 10B can be improved.

[0151] (Variation Example 3)

[0152] Figure 10 The wiring substrate 10C of Modified Example 3 is shown. Figure 10 In the diagram, antenna wiring 21 and antenna connecting wiring 22 intersect at an angle, and each opening 23 forms a rhombus shape when viewed from above. Antenna wiring 21 and antenna connecting wiring 22 are not parallel with respect to the X and Y directions, respectively.

[0153] Furthermore, the first dummy wiring portion 311 of the first dummy pattern region 301, the first dummy wiring portion 312 of the second dummy pattern region 302, and the first dummy wiring portion 313 of the third dummy pattern region 303 extend parallel to the antenna wiring 21. Similarly, the second dummy wiring portion 321 of the first dummy pattern region 301, the second dummy wiring portion 322 of the second dummy pattern region 302, and the second dummy wiring portion 323 of the third dummy pattern region 303 extend parallel to the antenna connecting wiring 22.

[0154] In this variation, the boundaries between the antenna pattern area 20 and each dummy pattern area 30 can also be made indistinct. Therefore, on the surface of the display 91, the antenna pattern area 20 and each dummy pattern area 30 are difficult to see, making it difficult for the user of the image display device 90 to visually identify them. Furthermore, the conductivity and transparency of the wiring substrate 10C can be ensured.

[0155] (Variation Example 4)

[0156] Figure 11 The wiring substrate 10D of Modified Example 4 is shown. Figure 11 In this configuration, the linewidths of antenna wiring 21 and the first dummy wiring portions 311, 312, and 313 gradually narrow from the antenna pattern region 20 toward the dummy pattern region 30, which is further away from the antenna pattern region 20. Specifically, the linewidth of the first dummy wiring portion 311 in the first dummy pattern region 301 is narrower than the linewidth of antenna wiring 21 in the antenna pattern region 20. Furthermore, the linewidth of the first dummy wiring portion 312 in the second dummy pattern region 302 is narrower than the linewidth of the first dummy wiring portion 311 in the first dummy pattern region 301. And, the linewidth of the first dummy wiring portion 313 in the third dummy pattern region 303 is narrower than the linewidth of the first dummy wiring portion 312 in the second dummy pattern region 302.

[0157] In this way, by making the linewidth of antenna wiring 21 and the first dummy wiring portions 311, 312, 313 gradually narrow from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20, the aperture ratios A1, A21, A22, A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be gradually increased from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20.

[0158] In addition, Figure 11In this configuration, the linewidths of the antenna connection wiring 22 and the second dummy wiring portions 321, 322, and 323 gradually narrow from the antenna pattern region 20 toward the dummy pattern region 30, which is further away from the antenna pattern region 20. Specifically, the linewidth of the second dummy wiring portion 321 in the first dummy pattern region 301 is narrower than the linewidth of the antenna connection wiring 22 in the antenna pattern region 20. Furthermore, the linewidth of the second dummy wiring portion 322 in the second dummy pattern region 302 is narrower than the linewidth of the second dummy wiring portion 321 in the first dummy pattern region 301. Moreover, the linewidth of the second dummy wiring portion 323 in the third dummy pattern region 303 is narrower than the linewidth of the second dummy wiring portion 322 in the second dummy pattern region 302.

[0159] In this way, by making the linewidth of the antenna connecting wiring 22 and the second dummy wiring portions 321, 322, 323 gradually narrow from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20, the aperture ratios A1, A21, A22, A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be gradually increased from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20.

[0160] (Variation Example 5)

[0161] Figure 12 The wiring substrate 10E of Modified Example 5 is shown. Figure 12 In this configuration, the spacing between the antenna wiring 21 and the first dummy wiring portions 311, 312, and 313 gradually increases from the antenna pattern region 20 toward the dummy pattern region 30, which is further away from the antenna pattern region 20. Specifically, the spacing of the first dummy wiring portions 311 in the first dummy pattern region 301 is larger than the spacing of the antenna wiring 21 in the antenna pattern region 20. Furthermore, the spacing of the first dummy wiring portions 312 in the second dummy pattern region 302 is larger than the spacing of the first dummy wiring portions 311 in the first dummy pattern region 301. And, the spacing of the first dummy wiring portions 313 in the third dummy pattern region 303 is larger than the spacing of the first dummy wiring portions 312 in the second dummy pattern region 302.

[0162] Furthermore, in the illustrated example, the spacing of the first dummy wiring portions 311, 312, and 313 is an integer multiple of the spacing of the antenna wiring 21. Specifically, the spacing of the first dummy wiring portion 311 is twice the spacing of the antenna wiring 21, the spacing of the first dummy wiring portion 312 is three times the spacing of the antenna wiring 21, and the spacing of the first dummy wiring portion 313 is four times the spacing of the antenna wiring 21. Alternatively, the spacing of the first dummy wiring portions 311, 312, and 313 may not be an integer multiple of the spacing of the antenna wiring 21.

[0163] In this way, by increasing the spacing between the antenna wiring 21 and the first dummy wiring portions 311, 312, 313 in stages from the antenna pattern region 20 toward the dummy pattern region 30 which is away from the antenna pattern region 20, the aperture ratios A1, A21, A22, A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be increased in stages from the antenna pattern region 20 toward the dummy pattern region 30 which is away from the antenna pattern region 20.

[0164] In addition, Figure 12 In this configuration, the spacing between the antenna connection wiring 22 and the second dummy wiring portions 321, 322, and 323 gradually increases from the antenna pattern region 20 toward the dummy pattern region 30, which is further away from the antenna pattern region 20. Specifically, the spacing of the second dummy wiring portions 321 in the first dummy pattern region 301 is larger than the spacing of the antenna connection wiring 22 in the antenna pattern region 20. Furthermore, the spacing of the second dummy wiring portions 322 in the second dummy pattern region 302 is larger than the spacing of the second dummy wiring portions 321 in the first dummy pattern region 301. Moreover, the spacing of the second dummy wiring portions 323 in the third dummy pattern region 303 is larger than the spacing of the second dummy wiring portions 322 in the second dummy pattern region 302.

[0165] Furthermore, in the illustrated example, the spacing of the second dummy wiring portions 321, 322, and 323 is an integer multiple of the spacing of the antenna connection wiring 22. Specifically, the spacing of the second dummy wiring portion 321 is twice the spacing of the antenna connection wiring 22, the spacing of the second dummy wiring portion 322 is three times the spacing of the antenna connection wiring 22, and the spacing of the second dummy wiring portion 323 is four times the spacing of the antenna connection wiring 22. Alternatively, the spacing of the second dummy wiring portions 321, 322, and 323 may not be an integer multiple of the spacing of the antenna connection wiring 22.

[0166] In this way, by progressively increasing the spacing between the antenna connecting wiring 22 and the second dummy wiring portions 321, 322, 323 from the antenna pattern region 20 toward the dummy pattern region 30 which is away from the antenna pattern region 20, the aperture ratios A1, A21, A22, A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be progressively increased from the antenna pattern region 20 toward the dummy pattern region 30 which is away from the antenna pattern region 20.

[0167] (Variation Example 6)

[0168] Figure 13 The wiring substrate 10F of Modified Example 6 is shown. Figure 13In this configuration, the first dummy wiring portions 311, 312, and 313 are formed as dashed lines. Furthermore, the slits of the first dummy wiring portions 311, 312, and 313, which are formed as dashed lines, gradually increase in length from the dummy pattern region 30 adjacent to the antenna pattern region 20 towards the dummy pattern region 30 away from the antenna pattern region 20. That is, the slit of the first dummy wiring portion 312 of the second dummy pattern region 302 is longer than the slit of the first dummy wiring portion 311 of the first dummy pattern region 301. Additionally, the slit of the first dummy wiring portion 313 of the third dummy pattern region 303 is longer than the slit of the first dummy wiring portion 312 of the second dummy pattern region 302.

[0169] In this way, by forming the first dummy wiring portions 311, 312, and 313 into dashed lines, and by making the cuts of the first dummy wiring portions 311, 312, and 313 into dashed lines increase in stages from the dummy pattern region 30 adjacent to the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20, the aperture ratios A1, A21, A22, and A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be increased in stages from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20.

[0170] In addition, Figure 13 In this configuration, the second dummy wiring portions 321, 322, and 323 are formed as dashed lines. Furthermore, the slits of the dashed second dummy wiring portions 321, 322, and 323 extend in stages from the dummy pattern region 30 adjacent to the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20. That is, the slit of the second dummy wiring portion 322 of the second dummy pattern region 302 is longer than the slit of the second dummy wiring portion 321 of the first dummy pattern region 301. Additionally, the slit of the second dummy wiring portion 323 of the third dummy pattern region 303 is longer than the slit of the second dummy wiring portion 322 of the second dummy pattern region 302.

[0171] In this way, by forming the second dummy wiring portions 321, 322, and 323 into dashed lines and by making the cuts of the second dummy wiring portions 321, 322, and 323 into dashed lines gradually increase from the dummy pattern region 30 adjacent to the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20, the aperture ratios A1, A21, A22, and A23 of the antenna pattern region 20 and the plurality of dummy pattern regions 30 can be gradually increased from the antenna pattern region 20 toward the dummy pattern region 30 away from the antenna pattern region 20.

[0172] (Variation Example 7)

[0173] Figure 14The wiring substrate 10G of variant example 7 is shown. Figure 14 In the process, the boundary line B between the antenna pattern region 20 and the first dummy pattern region 301, the boundary line B1 between the first dummy pattern region 301 and the second dummy pattern region 302, and the boundary line B2 between the second dummy pattern region 302 and the third dummy pattern region 303 are respectively formed as serrated shapes.

[0174] In this variation, the boundaries between the antenna pattern area 20 and each dummy pattern area 30 can be made less distinct. Therefore, on the surface of the display 91, the antenna pattern area 20 and each dummy pattern area 30 can be made difficult to see, making it difficult for the user of the image display device 90 to identify the antenna pattern area 20 and each dummy pattern area 30 with the naked eye.

[0175] (Variation Example 8)

[0176] Figure 15 The wiring substrate 10H of variant example 8 is shown. Figure 15 In the process, the boundary line B between the antenna pattern region 20 and the first dummy pattern region 301, the boundary line B1 between the first dummy pattern region 301 and the second dummy pattern region 302, and the boundary line B2 between the second dummy pattern region 302 and the third dummy pattern region 303 are respectively formed into wave shapes.

[0177] In this variation, the boundaries between the antenna pattern area 20 and each dummy pattern area 30 can be made less distinct. Therefore, on the surface of the display 91, the antenna pattern area 20 and each dummy pattern area 30 can be made difficult to see, making it difficult for the user of the image display device 90 to identify the antenna pattern area 20 and each dummy pattern area 30 with the naked eye.

[0178] (Variation Example 9)

[0179] Figure 16 and Figure 17 The wiring substrate 10I of variant example 9 is shown. Figure 16 and Figure 17 In the first dummy pattern region 301, at least a portion of the outer edge has an arc shape.

[0180] As described above, the antenna pattern region 20 has a quadrilateral shape when viewed from above. In this case, the outer edge of the antenna pattern region 20, when viewed from above, includes a pair of first sides 201 extending along the long side direction (Y direction) and a pair of second sides 202 extending along the width direction (X direction). The first sides 201 and the second sides 202 intersect each other. Furthermore, on the first side 201 of the outer edge of the antenna pattern region 20, the antenna wiring 21 or antenna connection wiring 22 may not overlap in a manner parallel to the first side 201. Similarly, on the second side 202 of the outer edge of the antenna pattern region 20, the antenna wiring 21 or antenna connection wiring 22 may not overlap in a manner parallel to the second side 202. That is, among the first side 201 and the second side 202 of the outer edge of the antenna pattern region 20, the outermost portion (the side furthest from the antenna pattern region 20) of the antenna wiring 21 or antenna connection wiring 22 is the edge located on that edge.

[0181] Here, as Figure 17 As shown, the vertex where the first side 201 intersects with the second side 202 is designated as the first vertex V1. Furthermore, the extension line of the first side 201 extending from the first vertex V1 is designated as the first imaginary line IL1. And the extension line of the second side 202 extending from the first vertex V1 is designated as the second imaginary line IL2. In this case, in the region R1 enclosed by the first imaginary line IL1 and the second imaginary line IL2, the outer edge of the first dummy pattern region 301 has an arc shape centered on the first vertex V1. That is, the boundary line B1 between the first dummy pattern region 301 and the second dummy pattern region 302 is formed as an arc shape centered on the first vertex V1 in region R1.

[0182] Furthermore, in the region R1 enclosed by the first imaginary line IL1 and the second imaginary line IL2, the outer edge of the second dummy pattern region 302 has an arc shape centered on the first vertex V1. That is, the boundary line B2 between the second dummy pattern region 302 and the third dummy pattern region 303 is formed in region R1 as an arc shape centered on the first vertex V1. Moreover, as described above, the number of dummy pattern regions 30 provided in the wiring substrate 10 (wiring substrate 10I) is arbitrary, for example, it can be more than 2 and less than 50, or it can be more than 2 and less than 10. In this case, the outer edge of each dummy pattern region 30 can also have an arc shape centered on the first vertex V1.

[0183] Here, when the antenna pattern region 20 has a quadrilateral shape when viewed from above, the boundary of the antenna pattern region 20 is easily visible near the corners of the quadrilateral shape (e.g., the first vertex V1). Furthermore, in this case, due to reflection of visible light, it is possible to see light stripes extending outwards (away from the antenna pattern region 20) from the corners of the quadrilateral shape in a manner that is not parallel to either the X or Y directions. In contrast, according to this modified example, in the region R1 sandwiched between the first imaginary line IL1 and the second imaginary line IL2, the outer edge of the first dummy pattern region 301 has an arc shape centered on the first vertex V1. Therefore, even when the antenna pattern region 20 has a quadrilateral shape when viewed from above, it is possible to effectively make the antenna pattern region 20 and the light stripes difficult to see.

[0184] Furthermore, according to this modified example, in the region R1 sandwiched between the first imaginary line IL1 and the second imaginary line IL2, the outer edge of the second dummy pattern region 302 has an arc shape centered on the first vertex V1. This makes it more effective to make the antenna pattern region 20 and the light stripes less visible.

[0185] Furthermore, in this variant example, such as Figure 18 As shown, in an image display device, the antenna pattern area 20 can also be located at the corner 91a of the display 91. Figure 18 An image display device 90A with a modified example is shown. In this modified example, each dummy pattern region 30 is formed in such a way that it surrounds the entire circumferential region (negative X-direction side, positive Y-direction side) of the antenna pattern region 20, except for the positive X-direction side and the negative Y-direction side (power supply unit 40 side). In this case, the aforementioned light stripes can be made more difficult to see.

[0186] (Variation Example 10)

[0187] Figure 19 The wiring substrate 10J of modified example 10 is shown. Figure 19 In this circuit, the wiring substrate 10J has a single dummy pattern region 30. That is, the wiring substrate 10J only has a first dummy pattern region 301 adjacent to the antenna pattern region 20.

[0188] In this modified example, in the region R1 sandwiched between the first imaginary line IL1 and the second imaginary line IL2, the outer edge of the first dummy pattern region 301 also has an arc shape centered on the first vertex V1. Thus, even when the antenna pattern region 20 has a quadrilateral shape when viewed from above, the antenna pattern region 20 and the light stripes can be effectively made difficult to see.

[0189] (Variation Example 11)

[0190] Figure 20 The wiring substrate 10K of Modified Example 11 is shown. Figure 20 In the diagram, the antenna pattern region 20 has a base-side portion 203 on the power supply section 40 side and an end-side portion 204 connected to the base-side portion 203. Both the base-side portion 203 and the end-side portion 204 have a quadrilateral shape when viewed from above. In this case, the length (Y-direction distance) of the end-side portion 204 is longer than the length (Y-direction distance) of the base-side portion 203, and the width (X-direction distance) of the end-side portion 204 is wider than the width (X-direction distance) of the base-side portion 203. In this case, the antenna pattern region 20 can be effectively made difficult to see. Furthermore, in the illustrated example, the wiring substrate 10K has two dummy pattern regions 30 (301, 302), but it is not limited to this; the wiring substrate 10K may also have three or more dummy pattern regions 30. In this case, the outer edge of each dummy pattern region 30 may also have an arc shape centered on the first vertex V1.

[0191] (Variation Example 12)

[0192] Figure 21 The wiring substrate 10L of modified example 12 is shown. Figure 21 In the first dummy pattern region 301, the outer edge does not have an arc shape centered on the first vertex V1.

[0193] In this case, the outer edge of the first dummy pattern region 301, when viewed from above, includes a pair of third sides 3011 extending along the long side direction (Y direction) and a fourth side 3012 extending along the width direction (X direction). The third sides 3011 and the fourth side 3012 intersect each other. Furthermore, on the third side 3011 of the outer edge of the first dummy pattern region 301, the first dummy wiring portion 311 or the second dummy wiring portion 321 may not overlap with the third side 3011 in a manner parallel to it. Similarly, on the fourth side 3012 of the outer edge of the first dummy pattern region 301, the first dummy wiring portion 311 or the second dummy wiring portion 321 may not overlap with the fourth side 3012 in a manner parallel to it. That is, in the third side 3011 and the fourth side 3012 of the outer edge of the first dummy pattern area 301, the outermost part of the first dummy wiring portion 311 or the second dummy wiring portion 321 (the side away from the antenna pattern area 20) is the side located on that side.

[0194] Here, as Figure 21As shown, the vertex where the third side 3011 and the fourth side 3012 intersect is designated as the second vertex V2. Furthermore, the extension line of the third side 3011 extending from the second vertex V2 is designated as the third imaginary line IL3. And the extension line of the fourth side 3012 extending from the second vertex V2 is designated as the fourth imaginary line IL4. In this case, in the region R2 sandwiched between the third imaginary line IL3 and the fourth imaginary line IL4, the outer edge of the second dummy pattern region 302 has an arc shape centered on the second vertex V2. Moreover, as described above, the number of dummy pattern regions 30 provided in the wiring substrate 10 (wiring substrate 10L) is arbitrary, for example, it can be approximately 2 or more and less than 50, or approximately 2 or more and less than 10. In this case, the outer edges of each dummy pattern region 30 other than the first dummy pattern region 301 can also have an arc shape centered on the second vertex V2.

[0195] As described above, the aperture ratio A21 of the first dummy pattern region 301 is greater than or equal to the aperture ratio A1 of the antenna pattern region 20. Here, when the aperture ratio A21 is equal to the aperture ratio A1, it is possible to suppress the situation where the boundary of the antenna pattern region 20 is easily visible near the corner (e.g., the first vertex V1). Therefore, in the region R1 enclosed by the first imaginary line IL1 and the second imaginary line IL2, even if the outer edge of the first dummy pattern region 301 does not have an arc shape centered on the first vertex V1, it is difficult to see the antenna pattern region 20 and light stripes.

[0196] On the other hand, in this case, the aperture ratio A21 of the first dummy pattern region 301 can also be smaller than the aperture ratio A22 of the second dummy pattern region 302. That is, in order to improve the overall aperture ratio A3 of the wiring substrate 10L, the aperture ratio A22 of the second dummy pattern region 302 can also be larger than the aperture ratio A21 of the first dummy pattern region 301.

[0197] Here, when the outer edge of the first dummy pattern region 301 includes the third side 3011 and the fourth side 3012 that intersect when viewed from above, the boundary of the first dummy pattern region 301 is easily visible near the second vertex V2 where the third side 3011 and the fourth side 3012 intersect. Furthermore, in this case, due to reflection of visible light, it is possible to see light fringes extending outward from the second vertex V2 in a manner that is not parallel to either the X or Y directions. In contrast, according to this modified example, in the region R2 sandwiched between the third imaginary line IL3 and the fourth imaginary line IL4, the outer edge of the second dummy pattern region 302 has an arc shape centered on the second vertex V2. Therefore, the first dummy pattern region 301 and the light fringes can be effectively made difficult to see.

[0198] (Variation Example 13)

[0199] Figure 22 The wiring substrate 10M of variant 13 is shown. Figure 22 In the above view, the antenna pattern region 20 has a quadrilateral shape with rounded corners. Therefore, the antenna pattern region 20 does not have a shape that includes corners that make the boundaries of the antenna pattern region 20 easily visible. Therefore, in the aforementioned region R1 (refer to...) Figure 21 Even when the outer edge of the first dummy pattern region 301 does not have an arc shape centered on the first vertex V1, it is difficult to see the antenna pattern region 20 and the light stripes.

[0200] Furthermore, in this modified example, in region R2, which is sandwiched between the third imaginary line IL3 and the fourth imaginary line IL4, the outer edge of the second dummy pattern region 302 can also have an arc shape centered on the second vertex V2. This effectively makes the first dummy pattern region 301 and the light stripes difficult to see.

[0201] (Variation Example 14)

[0202] Figure 23 The wiring substrate 10N of variant 14 is shown. Figure 23 In the antenna pattern area 20, there is a pair of first transmission units 205 connected to the power supply unit 40, a pair of second transmission units 206 connected to each of the first transmission units 205, and a transceiver unit 207 connected to the pair of second transmission units 206. The pair of first transmission units 205 extend along the long side direction (Y direction) of the antenna pattern area 20. The pair of second transmission units 206 extend obliquely relative to the Y direction, approaching each other as they move toward the positive side of the Y direction. The transceiver unit 207, when viewed from above, has a quadrilateral shape including a diagonal extending along the X direction and a diagonal extending along the Y direction.

[0203] In this modified example, when the aperture ratio A21 of the first dummy pattern region 301 is equal to the aperture ratio A1, it is also difficult to see the antenna pattern region 20 and the light stripes.

[0204] Furthermore, in this modified example, in region R2, which is sandwiched between the third imaginary line IL3 and the fourth imaginary line IL4, the outer edge of the second dummy pattern region 302 can also have an arc shape centered on the second vertex V2. This effectively makes the first dummy pattern region 301 and the light stripes difficult to see.

[0205] (Variation Example 15)

[0206] Figure 24 The wiring substrate 10O of modified example 15 is shown. Figure 24 In the middle, the transceiver unit 207 has a circular shape when viewed from above.

[0207] In this modified example, when the aperture ratio A21 of the first dummy pattern region 301 is equal to the aperture ratio A1, it is also difficult to see the antenna pattern region 20 and the light stripes.

[0208] Furthermore, in this modified example, in region R2, which is sandwiched between the third imaginary line IL3 and the fourth imaginary line IL4, the outer edge of the second dummy pattern region 302 can also have an arc shape centered on the second vertex V2. This effectively makes the first dummy pattern region 301 and the light stripes difficult to see.

[0209] The various constituent elements disclosed in the above embodiments and variations can also be appropriately combined as needed. Alternatively, several constituent elements can be deleted from all the constituent elements shown in the above embodiments and variations.

Claims

1. A wiring substrate, wherein, The wiring substrate includes: substrate; A wiring pattern area, disposed on the substrate, comprising a plurality of wirings; and Multiple dummy pattern areas are arranged around the wiring pattern area and are electrically independent of the wiring. The substrate is transparent. The aperture ratio of the first dummy pattern region adjacent to the wiring pattern region among the plurality of dummy pattern regions is greater than the aperture ratio of the wiring pattern region. The aperture ratio of a second dummy pattern region, which is adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region, is greater than that of the first dummy pattern region. The outer edge of the wiring pattern area includes a first side and a second side that intersect each other when viewed from above. When the vertex where the first side intersects the second side is taken as the first vertex, the extension of the first side from the first vertex is taken as the first imaginary line, and the extension of the second side from the first vertex is taken as the second imaginary line, In the region enclosed by the first imaginary line and the second imaginary line, the outer edge of the first dummy pattern region has an arc shape centered on the first vertex.

2. The wiring substrate according to claim 1, wherein, There are multiple wiring pattern areas, and at least one of the dummy pattern areas is arranged to surround the multiple wiring pattern areas.

3. The wiring substrate according to claim 1, wherein, The aperture ratio of the wiring pattern area and the plurality of dummy pattern areas increases progressively from the wiring pattern area toward the dummy pattern areas away from the wiring pattern area. The difference between the aperture ratio of the first dummy pattern area and the aperture ratio of the wiring pattern area is 0% or more and 2% or less, and the difference between the aperture ratios of adjacent dummy pattern areas is 0.02% or more and 2% or less.

4. The wiring substrate according to any one of claims 1 to 3, wherein, The wiring substrate further includes a surrounding region disposed around the dummy pattern region furthest from the wiring pattern region, the surrounding region having an aperture ratio of 100%.

5. The wiring substrate according to claim 4, wherein, The aperture ratio of the wiring pattern area and the plurality of dummy pattern areas increases progressively from the wiring pattern area toward the dummy pattern areas away from the wiring pattern area. The difference between the aperture ratio of the first dummy pattern area and the aperture ratio of the wiring pattern area is 0% or more and 2% or less. The difference in aperture ratio between adjacent dummy pattern areas and the difference in aperture ratio between the surrounding area and the dummy pattern areas adjacent to the surrounding area are 0.02% or more and 2% or less, respectively.

6. The wiring substrate according to claim 1, wherein, In the region enclosed by the first imaginary line and the second imaginary line, the outer edge of the second dummy pattern region has an arc shape centered on the first vertex.

7. The wiring substrate according to any one of claims 1 to 3, wherein, The plurality of dummy pattern regions include a plurality of dummy wires that are electrically independent of the wiring, and the plurality of dummy wires each have a first dummy wire portion and a second dummy wire portion. The first dummy wire portions of adjacent dummy pattern regions are arranged parallel to each other, and the second dummy wire portions of adjacent dummy pattern regions are arranged parallel to each other.

8. The wiring substrate according to any one of claims 1 to 3, wherein, The wiring pattern area also includes a plurality of connecting wires that connect the plurality of wirings. The plurality of dummy pattern areas include a plurality of dummy wires that are electrically independent of the wirings and the connecting wires, respectively. The plurality of dummy wires each have a first dummy wire portion and a second dummy wire portion. The wirings are arranged parallel to the first dummy wire portions of each of the dummy pattern areas, and the connecting wires are arranged parallel to the second dummy wire portions of each of the dummy pattern areas.

9. The wiring substrate according to any one of claims 1 to 3, wherein, The wiring substrate has radio wave transceiver function.

10. A wiring substrate, wherein, The wiring substrate includes: substrate; A wiring pattern area, disposed on the substrate, comprising a plurality of wirings; and Multiple dummy pattern areas are arranged around the wiring pattern area and are electrically independent of the wiring. The substrate is transparent. The aperture ratio of the first dummy pattern region, which is adjacent to the wiring pattern region among the plurality of dummy pattern regions, is less than the aperture ratio of the second dummy pattern region, which is adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region. The outer edge of the first dummy pattern area includes the third and fourth sides that intersect when viewed from above. When the vertex where the third side intersects the fourth side is taken as the second vertex, the extension of the third side from the second vertex is taken as the third imaginary line, and the extension of the fourth side from the second vertex is taken as the fourth imaginary line, In the region enclosed by the third and fourth imaginary lines, the outer edge of the second dummy pattern region has an arc shape centered on the second vertex.

11. The wiring substrate according to claim 10, wherein, The plurality of dummy pattern regions include a plurality of dummy wires that are electrically independent of the wiring, and the plurality of dummy wires each have a first dummy wire portion and a second dummy wire portion. The first dummy wire portions of adjacent dummy pattern regions are arranged parallel to each other, and the second dummy wire portions of adjacent dummy pattern regions are arranged parallel to each other.

12. The wiring substrate according to claim 10 or 11, wherein, The wiring pattern area also includes a plurality of connecting wires that connect the plurality of wirings. The plurality of dummy pattern areas include a plurality of dummy wires that are electrically independent of the wirings and the connecting wires, respectively. The plurality of dummy wires each have a first dummy wire portion and a second dummy wire portion. The wirings are arranged parallel to the first dummy wire portions of each of the dummy pattern areas, and the connecting wires are arranged parallel to the second dummy wire portions of each of the dummy pattern areas.

13. The wiring substrate according to claim 10 or 11, wherein, The wiring substrate has radio wave transceiver function.

14. A wiring substrate, wherein, The wiring substrate includes: substrate; A wiring pattern area, disposed on the substrate, comprising a plurality of wirings; and A dummy pattern area is disposed around the wiring pattern area and is electrically independent of the wiring. The substrate is transparent. The outer edge of the wiring pattern area includes a first side and a second side that intersect each other when viewed from above. When the vertex where the first side intersects the second side is taken as the first vertex, the extension of the first side from the first vertex is taken as the first imaginary line, and the extension of the second side from the first vertex is taken as the second imaginary line, In the region enclosed by the first imaginary line and the second imaginary line, the outer edge of the dummy pattern region has an arc shape centered on the first vertex.

15. The wiring substrate according to claim 14, wherein, The wiring substrate has radio wave transceiver function.

16. An image display device, wherein, The image display device includes: The wiring substrate according to any one of claims 1 to 15; and A display device stacked on the wiring substrate, The wiring pattern area is located at the corner of the display device.

17. A method for manufacturing a wiring substrate, wherein, The method for manufacturing the wiring substrate includes: The process of preparing the substrate; and In the process of forming a wiring pattern area and a dummy pattern area on the substrate, the wiring pattern area includes a plurality of wirings, and the dummy pattern area is disposed around the wiring pattern area and is electrically independent of the wirings. The substrate is transparent. The outer edge of the wiring pattern area includes a first side and a second side that intersect each other when viewed from above. When the vertex where the first side intersects the second side is taken as the first vertex, the extension of the first side from the first vertex is taken as the first imaginary line, and the extension of the second side from the first vertex is taken as the second imaginary line, In the region enclosed by the first imaginary line and the second imaginary line, the outer edge of the dummy pattern region has an arc shape centered on the first vertex.

18. A method for manufacturing a wiring substrate, wherein, The method for manufacturing the wiring substrate includes: The process of preparing the substrate; and In the process of forming a wiring pattern area and a plurality of dummy pattern areas on the substrate, the wiring pattern area includes a plurality of wirings, and the plurality of dummy pattern areas are disposed around the wiring pattern area and are electrically independent of the wirings. The substrate is transparent. The aperture ratio of the first dummy pattern region, which is adjacent to the wiring pattern region among the plurality of dummy pattern regions, is less than the aperture ratio of the second dummy pattern region, which is adjacent to the first dummy pattern region and farther away from the wiring pattern region than the first dummy pattern region. The outer edge of the first dummy pattern area includes the third and fourth sides that intersect when viewed from above. When the vertex where the third side intersects the fourth side is taken as the second vertex, the extension of the third side from the second vertex is taken as the third imaginary line, and the extension of the fourth side from the second vertex is taken as the fourth imaginary line, In the region enclosed by the third and fourth imaginary lines, the outer edge of the second dummy pattern region has an arc shape centered on the second vertex.

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