Wiring body and intelligent glasses

Abstract

Provided is a wiring body provided with a substrate, a ground pattern provided on the substrate, and a conductor section including a first conductor pattern and a second conductor pattern made of metal, the ground pattern being a conductor pattern extending in a planar shape, the second conductor pattern being a mesh-shaped conductor pattern connected to the first conductor pattern, the conductor part can be arranged in a curved state.

Description

Technical Field

[0001] The present disclosure relates to a wiring device and smart glasses. Background Art

[0002] There is a known type of smart glasses in which an antenna and a substrate are provided in the glasses (for example, Transparent and Flexible Antenna for Wearable Glasses Applications, Seungman Hong, IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL.64, NO.7, July 2016). In the smart glasses, a transparent electrode is arranged on the lens body as an antenna. Summary of the invention

[0003] Here, in the smart glasses as described above, it is required that the conductor pattern disposed on the lens body suppresses visibility from the outside. In addition, it is also required to improve the antenna characteristics of the wiring body used in the smart glasses.

[0004] Therefore, an object of the present disclosure is to provide a wiring body and smart glasses that can suppress the visibility of a conductor pattern of an antenna and improve the characteristics of the antenna.

[0005] An aspect of the present disclosure relates to a wiring body comprising: a substrate; a ground pattern, which is arranged on the substrate; and a conductor portion, which includes a first conductor pattern and a second conductor pattern made of metal, wherein the ground pattern is a conductor pattern extending in a planar shape, and the second conductor pattern is a mesh conductor pattern connected to the first conductor pattern, and the conductor portion can be configured in a bent state.

[0006] An aspect of the present disclosure relates to a wiring body comprising: a substrate; a ground pattern, which is arranged on the substrate; and a conductor portion, which includes a first conductor pattern and a second conductor pattern made of metal, wherein the ground pattern is a conductor pattern extending in a planar shape, and the second conductor pattern is a mesh conductor pattern connected to the first conductor pattern, and the conductor portion can be configured in a state where at least a portion of the first conductor pattern and at least a portion of the second conductor pattern extend in different directions, respectively.

[0007] Smart glasses according to one aspect of the present disclosure include: a pair of lens bodies; temples disposed on both sides of the pair of lens bodies; and the wiring body described above, wherein the second conductor pattern is disposed on the lens bodies, and the substrate is disposed on the temples.

[0008] Effects of the Invention

[0009] According to one aspect of the present disclosure, it is possible to provide a wiring body that suppresses visibility of a conductor pattern of an antenna and can improve characteristics of the antenna, and smart glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a perspective view showing smart glasses including a wiring body according to an embodiment of the present disclosure.

[0011] Figure 2 This is a schematic diagram showing an example of how a wiring body is installed on smart glasses.

[0012] Figure 3 It is a diagram showing a wiring body.

[0013] Figure 4 This is a cross-sectional view showing a cross-sectional structure when the antenna unit is attached to the lens body.

[0014] Figure 5 is a table showing the experimental results.

[0015] Figure 6 This is a diagram showing an example of a structure for projecting an image on a lens body.

[0016] Figure 7 A diagram showing smart glasses according to a modified example.

[0017] Figure 8 A diagram showing smart glasses according to a modified example.

[0018] Fig. 9 A diagram showing smart glasses according to a modified example.

[0019] Fig.10 This is a schematic diagram showing an example of how a wiring body according to a modified example is mounted on smart glasses.

[0020] Fig.11 Yes means Fig.10 A diagram of the wiring body is shown.

[0021] Fig.12 This is a schematic diagram showing an example of how a wiring body according to a modified example is mounted on smart glasses.

[0022] Fig.13 Yes means Fig.12 A diagram of the wiring body is shown.

[0023] Fig.14 This is a schematic diagram showing an example of how a wiring body according to a modified example is mounted on smart glasses.

[0024] Fig.15 Yes means Fig.14A diagram of the wiring body is shown.

[0025] Explanation of symbols

[0026] 1 ... smart glasses; 2A, 2B ... lens body; 4A, 4B ... temples; 10 ... substrate; 11 ... ground pattern; 12 ... conductor portion; 13 ... base material; 16 ... first conductor pattern; 17 ... second conductor pattern; 24 ... connection portion; 25 ... resin layer; 27 ... insulating layer; 100 ... wiring body DETAILED DESCRIPTION

[0027] Several embodiments of the present disclosure are described in detail below, but the present disclosure is not limited to the following embodiments.

[0028] Figure 1 1 is a three-dimensional diagram of a smart glasses 1 having a wiring body 100 according to an embodiment of the present disclosure. Smart glasses 1 are a type of wearable device that maintains the shape of conventional glasses and has functions similar to those of a smartphone. Smart glasses 1 are devices that allow a user to directly display visual information in the field of vision, or can be operated through voice recognition, gesture recognition, a touch panel, and the like. Smart glasses 1 may include AR (Augmented Reality) glasses and MR (Mixed Reality) glasses that overlap images in the field of vision of the real world. In addition, the wiring body 100 may be applied to head-mounted devices (head-mounted devices), not only for Figure 1 The glasses-type device shown can also be used for goggles-type, hat-type, and helmet-type devices.

[0029] Smart glasses 1 include a pair of lens bodies 2A and 2B, a frame 3, a pair of temples 4A and 4B, and a wiring body 100. The lens body 2A and temple 4A are provided on the right eye side, and the lens body 2B and temple 4B are provided on the left eye side.

[0030] The frame 3 includes a pair of lens rims 3a, 3a and a nose bridge 3b. The lens rims 3a, 3a are parts that hold the lens bodies 2A, 2B. The nose bridge 3b is a part that connects the pair of lens rims 3a, 3a. In addition, the frame 3 can also be a frame without lens rims. The lens bodies 2A, 2B are opposite to the eyeballs of the user wearing the smart glasses 1. The temples 4A, 4B are arranged on both sides of the pair of lens bodies 2A, 2B. The temples 4A, 4B are parts that extend backward from the left and right lens rims 3a, 3a and hang on the ears of the user.

[0031] In this embodiment, the wiring body 100 is provided on the lens body 2A and the temple 4A on the right eye side. However, there is no limitation on where the wiring body 100 is provided, and it may be provided on the left eye side. Figure 21 is a schematic diagram showing an example of how the wiring body 100 is mounted on the smart glasses 1. Figure 2 , the structure of the right eye side of the smart glasses 1 is shown as viewed from the upper side, and the inner part of the temple 4A and the frame 3 is shown. Figure 2 As shown, the wiring body 100 includes an antenna portion 101 that functions as an antenna and a circuit portion 102 that includes an electronic circuit. The antenna portion 101 is provided on the lens body 2A, and the circuit portion 102 is provided on the temple 4A. The antenna portion 101 is in a bent state at the connection portion with the circuit portion 102. The lens body 2A has a main surface 2a on the opposite side to the user's eyeball and a main surface 2b opposite to the eyeball. The antenna portion 101 can be arranged on the main surface 2a of the lens body 2A. The main surface 2a of the lens body 2A is curved, but the antenna portion 101 is arranged on the main surface 2a in a state of being curved in a manner corresponding to the curved shape. In addition, the antenna portion 101 is arranged in a manner extending in the left-right direction along the upper edge of the lens body 2A near the upper edge. However, there is no particular limitation on the position or length of the antenna portion 101 in the lens body 2A.

[0032] The circuit unit 102 is arranged inside the temple 4A. The circuit unit 102 is arranged in a manner extending along the direction in which the temple 4A extends. In addition, the circuit unit 102 is arranged inside the temple 4A and is not exposed to the outside. However, the circuit unit 102 may not necessarily be arranged inside the temple 4A. For example, a part or all of the circuit unit 102 may be exposed from the surface of the temple 4A. In addition, the temple 4A has a first part 4Aa extending backward from the lens ring 3a of the frame 3, and a second part 4Ab extending further backward from the first part 4Aa and hanging on the ear of the user. In this embodiment, the first part 4Aa of the temple 4A is formed integrally with the lens ring 3a of the frame 3. A joint 5 that can open and close the second part 4Ab of the temple 4A is provided between the first part 4Aa and the second part 4Ab of the temple 4A. The circuit unit 102 may have a structure that can be bent according to the folding action of the second part 4Ab of the temple 4A at the joint 5, for example, by adopting a flexible substrate at least at a portion corresponding to the joint 5. Alternatively, the circuit unit 102 may be configured to be accommodated in the first portion 4Aa of the temple 4A.

[0033] Next, refer to Figure 3 , the structure of the wiring body 100 is described. Figure 3 The wiring body 100 is shown in a state where the antenna portion 101 and the circuit portion 102 extend in the same direction without being bent. Figure 3 (a) is a diagram showing the surface 10 a side of the substrate 10 of the wiring body 100 . Figure 3 (b) is a diagram showing the wiring body 100 from the side surface 10d of the substrate 10 . Figure 3 (c) is a diagram showing the back side 10b of the substrate 10 of the wiring body 100. Figure 3 As shown, the wiring body 100 includes a substrate 10, a ground pattern 11, and a conductor portion 12. The wiring body 100 of the present embodiment functions as a monopole antenna.

[0034] The substrate 10 is a member that becomes the base of the above-mentioned circuit unit 102. That is, the circuit unit 102 is composed of the substrate 10, the conductor pattern formed on the substrate 10, and the electronic components mounted on the substrate 10. The substrate 10 has a rectangular plate shape extending along the temple 4A. The substrate 10 has a surface 10a, a back surface 10b, and four side surfaces 10c, 10d, 10e, and 10f. The surface 10a and the back surface 10b are main surfaces that are opposite to each other in the thickness direction. The side surfaces 10c and 10d constitute the side surfaces on the long side and are opposite to each other in the short side direction. The side surfaces 10e and 10f constitute the side surfaces on the short side and are opposite to each other in the long side direction. Various electronic components 14 are mounted on the surface 10a of the substrate 10. In the present embodiment, RFIC is mounted as the electronic component 14. In addition, electronic components 14 not shown in the figure other than RFIC can be mounted on the surface 10a of the substrate 10.

[0035] The material of the substrate 10 is not particularly limited, but can be, for example, a glass epoxy substrate, a BT resin substrate, a polytetrafluoroethylene substrate, a ceramic substrate, a flexible substrate, etc. The thickness of the substrate 10 is not particularly limited, and can be set to 0.1 to 2 mm. The length of the substrate 10 will be described later. The resist layer 19 is formed on the surface 10a and the back surface 10b of the substrate 10 so as to cover the ground pattern 11 and the first conductor pattern 16, respectively (see Figure 3 (b)). In addition, Figure 3 In (b), the resist layer 19 is indicated by an imaginary line. Figure 3 In (a) and (c), the resist layer 19 is omitted to show the state where other components are exposed. The resist layer 19 is made of resin, such as alkali photoimageable resist, UV curable resist, thermosetting resist, etc. The thickness of the resist layer 19 is not particularly limited and can be set to 10 to 40 μm.

[0036] In this embodiment, when the wiring body 100 is assembled in the smart glasses 1, the front surface 10a is arranged on the outside and the back surface 10b is arranged on the inside relative to the head of the user (see Figure 2). The side surface 10c is arranged on the upper side, and the side surface 10d is arranged on the lower side. However, the orientation of the substrate 10 is not particularly limited, and the surface 10a may be arranged on the inner side, the back surface 10b may be arranged on the outer side, the side surface 10c may be arranged on the lower side, and the side surface 10d may be arranged on the upper side. The side surface 10e may be arranged on the front side of the user's head, and the side surface 10f may be arranged on the rear side.

[0037] The ground pattern 11 is a conductor pattern provided on the substrate 10. The ground pattern 11 is a region that is electrically grounded. The ground pattern 11 may be provided on the surface 10a of the substrate 10 (see Figure 3 (a)(b)), and is provided on the back side 10b of the substrate 10 (refer to Figure 3 (b)(c)). In the present embodiment, the ground pattern 11 on the surface 10a and the back surface 10b is a pattern whose outer edge extends along the four side surfaces 10c, 10d, 10e, and 10f of the substrate 10, and is formed in a manner that the outer edge of the ground pattern 11 is located further inward than the outer edge of the substrate 10. The width of the ground pattern 11 on each side is not particularly limited and can be set to 3 to 20 mm. In addition, in the surface 10a, the ground pattern 11 is configured by being separated from the first conductor pattern 16 described later by a gap, thereby being insulated from the first conductor pattern 16.

[0038] The ground pattern 11 is a conductor pattern (solid pattern) extending in a plane on the surface 10a and the back surface 10b of the substrate 10. The conductor pattern extending in a plane is a pattern formed by crimping a metal foil to the surface 10a and the back surface 10b. That is, the conductor pattern extending in a plane is not a pattern in which a conductor part and a non-conductor part exist alternately within a certain range like a mesh pattern, but a pattern in which a conductor part continuously extends within a certain range. In addition, the ground pattern 11 is a conductor pattern of a thick film having a thickness of micrometer level, unlike a thin film having a thickness of nanometer level, such as a transparent electrode.

[0039] The ground pattern 11 may also include a metal. The ground pattern 11 may include at least one metal selected from copper, nickel, cobalt, palladium, silver, gold, platinum, and tin, and may also include copper. The ground pattern 11 may also be a metal plating formed by a plating method. The ground pattern 11 may also include non-metallic elements such as phosphorus within a range that maintains appropriate conductivity. The thickness of the ground pattern 11 is not particularly limited, and may be set to 10 to 100 μm.

[0040] The conductor portion 12 includes a first conductor pattern 16 and a second conductor pattern 17 made of metal. The first conductor pattern 16 is a pattern formed on the surface 10a of the substrate 10. The second conductor pattern 17 is a conductor pattern that constitutes the antenna portion 101. The antenna portion 101 is formed by connecting the base material 13 to the side surface 10e on the front side of the substrate 10 and forming the second conductor pattern 17 on the base material 13. The second conductor pattern 17 is formed on the surface 13a of the base material 13 on the side of the surface 10a of the substrate 10 (see Figure 3 In the present embodiment, the antenna portion 101 has a rectangular shape having a long side direction in the same direction as the long side direction of the substrate 10. In addition, as the material of the first conductor pattern 16 and the second conductor pattern 17, the same material as the ground pattern 11 can be used.

[0041] In the present embodiment, the first conductor pattern 16 has a transmission line 18 that electrically connects the electronic component 14 and the second conductor pattern 17. The transmission line 18 extends from the electronic component 14 toward the side surface 10e on the front side. The width of the transmission line 18 is not particularly limited, and can be set to 50 to 1000 μm, for example. In addition, the first conductor pattern 16 can have a pattern connected to the electronic component 14 not shown. The first conductor pattern 16 is a conductor pattern (solid pattern) that extends in a planar shape on the surface 10a of the substrate 10. In addition, the structure of the first conductor pattern 16 is not particularly limited, and it can also be a mesh pattern. The thickness of the first conductor pattern 16 is not particularly limited, and it can be the same as the ground pattern 11. In addition, in order to adjust the impedance of the antenna part 101 and the circuit part 102, an impedance adjustment element can also be provided at the connection part of the first conductor pattern 16 and the second conductor pattern 17. As the impedance adjustment element, an inductor element or a capacitor element can be cited. These adjustment elements may be connected in series between the first conductor pattern 16 and the second conductor pattern 17 , or may be connected between a connection portion between the first conductor pattern 16 and the second conductor pattern 17 and the ground pattern 11 .

[0042] The second conductor pattern 17 is a mesh conductor pattern connected to the first conductor pattern 16. The mesh second conductor pattern 17 includes a first conductive line 21 and a plurality of second conductive lines 22. The first conductive line 21 is a linear conductor extending in parallel with the long side direction of the antenna portion 101. The plurality of first conductive lines 21 are arranged to be separated from each other along the short side direction of the antenna portion 101. The plurality of first conductive lines 21 are arranged to be separated at equal intervals. The second conductive line 22 is a linear conductor extending in parallel with the short side direction of the antenna portion 101. The plurality of second conductive lines 22 are arranged to be separated from each other along the long side direction of the antenna portion 101. The plurality of second conductive lines 22 are arranged to be separated at equal intervals. There is no particular restriction on the thickness of the conductive lines 21 and 22, and for example, it can be set to 1 to 5 μm. In addition, there is no particular restriction on the spacing between the conductive lines 21 and 22, and for example, it can be set to 50 to 300 μm. In addition, the first conductive line 21 may not be parallel to the long side direction as long as it extends in the long side direction, and the second conductive line 22 may not be parallel to the short side direction as long as it extends in the short side direction. In addition, the second conductor pattern 17 may be a pattern in which the first conductive line 21 extends obliquely relative to the long side direction, and the second conductive line 22 extends obliquely in the opposite direction to the long side direction as the first conductive line 21, and the first and second conductive lines 21 and 22 cross to form a mesh.

[0043] The sheet resistance of the second conductor pattern 17 may be 1Ω / □ or less, and may be 0.5Ω / □ or less. The sheet resistance represents the resistance of a thin film of uniform thickness, and is the resistance between two opposite sides when the film is set in a square shape. In addition, the method for measuring the sheet resistance is not particularly limited, and for example, it can be measured using a four-terminal surface measuring instrument.

[0044] The length of the second conductor pattern 17 is A, and the length of the ground pattern 11 is B (refer to Figure 3 (a)). In addition, the wavelength of the resonant frequency is set to λ. Here, the wavelength λ is a value calculated using the resonant frequency and the effective relative dielectric constant. The effective relative dielectric constant is the effective value of the relative dielectric constant of the lens body 2A, 2B, and is a value calculated based on the relative dielectric constant of the material constituting the lens body 2A, 2B and the air layer. At this time, equation (1) holds. The length A of the second conductor pattern 17 is the dimension of the antenna portion 101 in the long side direction. The length B of the ground pattern 11 is the dimension of the ground pattern 11 in the long side direction. Although there is no particular limitation, the length A of the second conductor pattern 17 can be set, for example, within a range where the ratio of A-λ / 4 to λ / 4 satisfies ±50%. The length of the substrate 10 can be set within a range that satisfies the following equation (1).

[0045] A-λ / 4<BA……(1)

[0046] The conductor portion 12 can be configured in a bent state. In addition, the conductor portion 12 can be configured in a state in which at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively. In addition, the different directions are three-dimensional intersecting directions. Therefore, in the present embodiment, the direction in which at least a portion of the second conductor pattern 17 extends becomes a direction that intersects with the plane of the ground pattern 11 and the first conductor pattern 16. That is, the configuration in which at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 can be configured in a state in which at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively, is different from the configuration in which a portion of the conductor pattern and a portion of the conductor pattern are formed into an L-shape in the same plane (for example, Figure 8 Here, the conductor portion 12 can be arranged in a state of being bent at the connecting portion 24 of the first conductor pattern 16 and the second conductor pattern 17 (see also Figure 2 ). The connection portion 24 also corresponds to the connection portion between the antenna portion 101 and the circuit portion 102. Figure 3 As shown, the antenna portion 101 may be able to extend from a state in the same direction as the circuit portion 102 to a state in which the antenna portion 101 extends in the same direction as the circuit portion 102. Figure 2 The structure is bent in the bent state shown. In addition, the bent state at the connecting portion 24 is not only a state of bending at the portion located at the boundary of the first conductor pattern 16 and the second conductor pattern 17, but it can also be a state in which the second conductor pattern 17 at the connecting portion 24 can be bent, for example, by adopting a flexible material as the base material 13 of the antenna portion 101. In addition, it can also be a state in which the first conductor pattern 16 at the connecting portion 24 can be bent by adopting a flexible substrate as the material of the substrate 10. However, in this case, the portion of the first conductor pattern 16 that is bent and extended toward the lens body side needs to be bent in a manner that is accommodated in the frame of the lens body. Or, as Figure 2 As shown, a member in which the antenna portion 101 and the circuit portion 102 are bent may be manufactured.

[0047] Reference Figure 4 (a) of FIG. 1A , the cross-sectional structure of the antenna unit 101 and the cross-sectional structure when the antenna unit 101 is mounted on the lens body 2A are described in detail. Figure 4 As shown in (a), the second conductor pattern 17 may be arranged in the mesh-like grooves 25a of the resin layer 25 provided on the surface 13a of the substrate 13. Figure 4 In the example shown in (a), the groove 25a penetrates the resin layer 25. In this case, the thickness of the second conductor pattern 17 and the resin layer 25 are equal. The thickness is not particularly limited, and can be set to 0.5 to 5 μm, for example. In addition, the groove 25a of the resin layer 25 may not penetrate. In addition, the thickness of the second conductor pattern 17 may be smaller than the thickness of the resin layer 25.

[0048] The resin layer 25 is formed of a light-transmitting resin, and a flat surface is usually formed by the resin layer 25 and the second conductor pattern 17. The total light transmittance of the resin layer 25 can be 90 to 100%. The haze of the resin layer 25 can be 0 to 5%. The difference in refractive index between the substrate 13 and the resin layer 25 can be 0.1 or less. The refractive index (nd25) of the resin layer 25 can be, for example, greater than 1.0, or less than 1.7, less than 1.6, or less than 1.5. The refractive index can be measured by a reflection spectrometer.

[0049] The resin forming the resin layer 25 may be a cured product of a curable resin composition (a photocurable resin composition or a thermosetting resin composition). The curable resin composition forming the resin layer 25 includes a curable resin, and examples thereof include acrylic resins, amino resins, cyanate resins, isocyanate resins, polyimide resins, epoxy resins, oxetane resins, polyesters, allyl resins, phenol resins, benzoxazine resins, xylene resins, ketone resins, furan resins, COPNA resins, silicone resins, dicyclopentadiene resins, benzocyclobutene resins, episulfide resins, ene-thiol resins, polyazomethine resins, polyvinyl benzyl ether compounds, acenaphthylene, and ultraviolet curing resins containing functional groups that cause polymerization reactions by ultraviolet rays, such as unsaturated double bonds, cyclic ethers, and vinyl ethers.

[0050] The substrate 13 has a degree of light transmittance required when the wiring body 100 is assembled into the smart glasses 1. Specifically, the total light transmittance of the substrate 13 can be 90 to 100%. The haze of the substrate 13 can be 0 to 5%. The substrate 13 can be, for example, a transparent resin film, examples of which include films of polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), cycloolefin polymer (COP), or polyimide (PI). Alternatively, the substrate 13 can also be a glass substrate. The thickness of the substrate 13 is not particularly limited, and can be set to, for example, 10 to 200 μm.

[0051] The base material 13 of the antenna part 101 is bonded to the main surface 2a of the lens body 2A via the adhesive sheet 26. The material of the adhesive sheet 26 is not particularly limited, and can be, for example, OCA (Optical Clear Adhesive) or OCR (Optical Clear Resin). The thickness of the adhesive sheet 26 is not particularly limited, and can be set to 50 to 200 μm, for example.

[0052] As the lens body 2A, for example, a plastic lens, a glass lens, etc. can be used. The material of the lens body 2A is not particularly limited as long as it is a resin material with excellent transparency and low refractive index, and for example, PMMA (polymethyl methacrylate) and other polycarbonate (PC) can be used. The thickness of the lens body 2A can be appropriately adjusted according to the user's vision, etc.

[0053] The second conductor pattern 17 of the antenna portion 101 may be covered by an insulating layer 27 on the opposite side to the lens body 2A. The insulating layer 27 is not particularly limited as long as it is a resin material having a lower dielectric constant than the components of the lens body 2A and excellent transparency and weather resistance. For example, PC (polycarbonate) may be used. The thickness of the insulating layer 27 is not particularly limited, and may be set to 100 to 200 μm, for example. The dielectric constant of the insulating layer 27 may be set to 2.7 to 3.0, for example. In addition, the dielectric constant of the lens body 2A may be set to 3.0 to 4.3, for example.

[0054] The layer structure in the lens body 2A is not limited to Figure 4 As shown in (a), it can be changed appropriately. For example, Figure 4 The layer structure shown in (b). Figure 4 In (b), the lens body 2A has an inner lens portion 31 and an outer lens portion 32. The antenna portion 101 is configured to be sandwiched by the inner lens portion 31 and the outer lens portion 32. The outer lens portion 32 is bonded to the second conductor pattern 17 via the adhesive sheet 26. Thus, the second conductor pattern 17 is protected by the outer lens portion 32 instead of the insulating layer 27. The outer lens portion 32 can be thinner than the inner lens portion 31. The outer lens portion 32 can be formed in the same manner as the inner lens portion 31 ( Figure 4 The lens body 2A) of (a) is made of the same material.

[0055] Next, the functions and effects of the wiring body 100 and the smart glasses 1 according to the present embodiment will be described.

[0056] The wiring body 100 of the present embodiment includes: a substrate 10, a ground pattern 11 provided on the substrate 10, and a conductor portion 12 including a first conductor pattern 16 and a second conductor pattern 17 made of metal, wherein the ground pattern 11 is a conductor pattern extending in a planar shape, and the second conductor pattern 17 is a mesh conductor pattern connected to the first conductor pattern 16 and can be arranged in a bent state. Here, the conductor portion 12 can be arranged in a bent state at a connecting portion 24 between the first conductor pattern 16 and the second conductor pattern 17.

[0057] In the wiring body 100, the conductor part 12 can be arranged in a bent state. Here, the conductor part 12 can be arranged in a bent state at the connecting part 24 of the first conductor pattern 16 and the second conductor pattern 17. Therefore, the second conductor pattern 17 can be arranged on the lens body 2A side of the smart glasses, and the first conductor pattern can be arranged on the temple 4A side together with the substrate 10. Therefore, the second conductor pattern 17 can function as the antenna part 101 provided on the lens body 2A. Here, the second conductor pattern 17 is a mesh conductor pattern. Therefore, the visibility of the conductor pattern of the antenna part 101 in the lens body 2A can be suppressed. In addition, by setting the second conductor pattern 17 of the antenna part 101 in a mesh shape, the resistance of the antenna part 101 can be reduced compared with the case where the antenna part 101 is composed of a transparent electrode. Here, since the ground pattern 11 is arranged on the temple 4A, it does not affect visibility, and therefore, it does not need to be set in a mesh or transparent electrode. Therefore, the ground pattern 11 provided on the substrate 10 is a conductor pattern extending in a planar shape. Thus, by setting the ground pattern 11 to a low resistance, the characteristics of the antenna unit 101 can be improved. By doing so, the visibility of the conductor pattern of the antenna can be suppressed, and the characteristics of the antenna can be improved. In addition, by using the mesh-shaped second conductor pattern 17, the antenna unit 101 can be provided in the lens body 2A while following the curved shape of the lens body 2A.

[0058] The sheet resistance of the second conductor pattern 17 can be 1Ω / □ or less. This allows the antenna portion 101 to have a low resistance.

[0059] When the length of the second conductor pattern 17 is set to A, the length of the ground pattern 11 is set to B, and the wavelength of the resonance frequency is set to λ, equation (1) can be established. In this case, the length of the ground pattern 11 can be made sufficiently larger than the length of the second conductor pattern. Thus, the antenna characteristics can be improved.

[0060] A-λ / 4<BA……(1)

[0061] The second conductor pattern 17 can be arranged in the mesh-shaped grooves 25a of the resin layer 25 provided on the substrate 13. Thus, the second conductor pattern 17 can be firmly fixed to the lens body 2A.

[0062] The wiring body 100 of the present embodiment includes: a substrate 10, a ground pattern 11 provided on the substrate 10, and a conductor portion 12 including a first conductor pattern 16 and a second conductor pattern 17 made of metal, wherein the ground pattern 11 is a conductor pattern extending in a planar shape, and the second conductor pattern 17 is a mesh conductor pattern connected to the first conductor pattern 16 and can be arranged in a bent state. Here, the conductor portion 12 can be arranged in a state in which at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively.

[0063] In the wiring body 100, the conductor portion 12 can be arranged in a state where at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions. Here, the conductor portion 12 can be arranged in a state bent at the connecting portion 24 of the first conductor pattern 16 and the second conductor pattern 17. Therefore, the second conductor pattern 17 can be arranged on the lens body 2A side of the smart glasses, and the first conductor pattern can be arranged on the temple 4A side of the smart glasses together with the substrate 10. Therefore, the second conductor pattern 17 can function as the antenna portion 101 provided in the lens body 2A. Here, the second conductor pattern 17 is a mesh-shaped conductor pattern. Therefore, the visibility of the conductor pattern of the antenna portion 101 in the lens body 2A can be suppressed. In addition, by setting the second conductor pattern 17 of the antenna portion 101 in a mesh shape, the resistance of the antenna portion 101 can be reduced compared to the case where the antenna portion 101 is composed of a transparent electrode. Here, since the ground pattern 11 is arranged on the temple 4A, it does not affect visibility, and therefore, it is not necessary to set it in a mesh shape or a transparent electrode. Therefore, the ground pattern 11 provided on the substrate 10 is a conductor pattern extending in a plane. Thus, by setting the ground pattern 11 to a low resistance, the characteristics of the antenna unit 101 can be improved. By doing so, the visibility of the conductor pattern of the antenna can be suppressed, and the characteristics of the antenna can be improved. In addition, by using the mesh-shaped second conductor pattern 17, the antenna unit 101 can be provided in the lens body 2A while following the curved shape of the lens body 2A.

[0064] The smart glasses 1 of this embodiment include a pair of lens bodies 2A, 2B, temples 4A, 4B arranged on both sides of the pair of lens bodies 2A, 2B, and the above-mentioned wiring body 100, the second conductor pattern 17 is arranged on the lens body 2A, and the substrate 10 is arranged on the temple 4A.

[0065] According to the smart glasses 1 , by disposing the second conductive pattern 17 on the lens body 2A and disposing the substrate 10 on the temple 4A, the same operation and effect as those of the wiring body 100 described above can be obtained.

[0066] The smart glasses 1 further include an insulating layer 27 covering the side of the second conductor pattern 17 opposite to the lens body 2A, and the dielectric constant of the insulating layer 27 may be lower than the dielectric constant of the components of the lens body 2A. In this case, the portion of the second conductor pattern 17 facing the outside on the side opposite to the lens body 2A can be protected by the insulating layer 27 having high insulation. In addition, by reducing the dielectric constant of the insulating layer 27, the influence on the radiation characteristics can be suppressed.

[0067] Reference Figure 5 , the characteristics of the smart glasses 1 involved in the embodiment and the smart glasses involved in the comparative example are described. The smart glasses 1 involved in the embodiment adopts a mesh-shaped second conductor pattern 17 with a width of 1μm, a height of 3μm, and a pitch of 100μm as the conductor of the antenna part. The material of the second conductor pattern 17 is copper. The smart glasses involved in the comparative example adopt a silver transparent electrode obtained by a sputtered film as the conductor of the antenna part. The film structure of the sputtered film is "oxide film / silver / oxide film", and the thickness of the silver film is 15nm. The transmittance of the antenna part 101 of the smart glasses 1 of the embodiment is 90%, and the surface resistance is 1Ω / □. The transmittance of the antenna part 101 of the smart glasses of the comparative example is 80%, and the surface resistance is 4Ω / □. The radiation efficiency of these smart glasses was measured at 2.44GHz, and the result was 55.6% compared with the comparative example, and the embodiment became 61.6%, confirming the improvement of radiation efficiency.

[0068] The present disclosure is not limited to the above-described embodiments.

[0069] The smart glasses 1 may also be provided with a structure for projecting images on the lens body 2A. Figure 6 The projection device 110 is shown disposed on the temple 4A of the glasses. The projection device 110 includes an optical engine 120 and a metasurface reflector 130 .

[0070] The optical engine 120 is a device that generates laser light Ls of a color and intensity corresponding to a pixel of an image projected onto the retina, and emits the laser light Ls toward the Metasurface reflector 130. The optical engine 120 includes a light source unit 121 (light source), an optical component 122, a movable mirror 123, a laser driver 124, a mirror driver 125, and a controller 126. In the optical engine 120, laser light of a color and intensity corresponding to a pixel of an image projected onto the retina is emitted from the light source unit 121, passes through the optical component 122, and is reflected by the movable mirror 123. The laser light reflected by the movable mirror 123 is emitted as laser light Ls toward the Metasurface reflector 130. The reflected light Lr reflected by the Metasurface reflector 130 is incident on the retina of the user as an image. The laser driver 124 drives the light source unit 121, and the mirror driver 125 drives the movable mirror 123. The controller 126 controls the laser driver 124 and the mirror driver 125.

[0071] In addition, as a structure for projecting an image on the lens body 2A, the above-mentioned Figure 6 Instead of the structure shown in the figure, a structure is adopted in which a mechanism for displaying an image is provided in the lens body 2A itself.

[0072] In addition, the smart glasses 1 may have a plurality of second conductor patterns 17, and at least one second conductor pattern 17 may be disposed on the lens body 2A on the right eye side and the lens body 2B on the left eye side. Figure 7 As shown, in addition to the second conductor pattern 17A of the lens body 2A on the right eye side, a second conductor pattern 17B of the lens body 2B on the left eye side can also be provided. In this case, since the smart glasses 1 have the antenna unit 101 on both the right eye side and the left eye side, the antenna characteristics can be improved. In addition, with respect to the second conductor pattern 17B on the left eye side, the circuit unit 102 can be provided on the left temple 4B.

[0073] In addition, the smart glasses 1 may have a plurality of second conductor patterns 17, and a plurality of second conductor patterns 17 may be arranged on either the lens body 2A on the right eye side or the lens body 2B on the left eye side. Figure 8 As shown, the second conductor pattern 17A and another second conductor pattern 17B can be arranged on the lens body 2A on the right eye side. In this case, the second conductor pattern 17A and the second conductor pattern 17B can also be made to act as antennas respectively. That is, in one lens body 2A, the antenna part 101 can be arranged in multiple locations, so that the antenna characteristics can be improved. In addition, if multiple second conductor patterns 17 are arranged on one lens body 2A, the circuit part 102 arranged on the right temple 4A can be shared. However, with respect to Figure 8 In this manner, one or more second conductor patterns 17 may be arranged on the lens body 2B on the left eye side.

[0074] In addition, the extending directions of the plurality of second conductor patterns 17 may be different from each other. Figure 8 In the embodiment, the second conductor pattern 17A extends in the horizontal direction, and the second conductor pattern 17B extends in the vertical direction. Since the antenna portion 101 can be provided in a wide range, the antenna characteristics can be improved. Figure 8 In the embodiment, the second conductor pattern 17A and the second conductor pattern 17B may constitute a dipole antenna. In this case, a stable antenna characteristic can be obtained without being affected by the size of the ground pattern 11. In addition, as a dipole antenna, a Fig. 9 As shown, the second conductor pattern 17A extends in the left direction, and the second conductor pattern 17B extends in the right direction.

[0075] The connection method of the first conductor pattern 16 and the second conductor pattern 17 is not limited to Figure 2 and Figure 3 For example, it is also possible to use Fig.10 and Fig.11 The structure shown. Fig.10 As shown, the antenna portion 101 having the second conductor pattern 17 is bent at the bending portion 80 in the frame 3 and extends to the surface 10a side of the circuit portion 102. In addition, the second conductor pattern 17 is connected to the first conductor pattern 16 at a position on the surface 10a side of the circuit portion 102. In this structure, a connecting portion 24 is provided at a position on the surface 10a side of the circuit portion 102. In this structure, the conductor portion 12 can also be configured in a bent state. In addition, in this structure, the conductor portion 12 can also be configured in a state in which at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively. Fig.11 In the plan view shown in (a), the second conductor pattern 17 extends to a position overlapping with the edge portion near the side surface 10e in the substrate 10. Fig.11 As shown in (a) and (b), the transmission line 18 of the first conductor pattern 16 and the second conductor pattern 17 are electrically connected at the connection portion 24 via a bonding member 81. The bonding member 81 is not particularly limited, but solder or conductive paste may be used.

[0076] Alternatively, you can use Fig.12 and Fig.13 The structure shown. Fig.12As shown, the second conductor pattern 17 is connected to the first conductor pattern 16 via the flexible substrate 83. At this time, the flexible substrate has a bending portion 80. A connecting portion 24 is provided at a position where the flexible substrate 83 and the first conductor pattern 16 are connected, and a connecting portion 24 is provided at a position where the flexible substrate 83 and the second conductor pattern 17 are connected. In this structure, in addition to the first conductor pattern 16 and the second conductor pattern 17, the conductor portion 12 also has a conductor pattern of the flexible substrate 83. In this structure, the conductor portion 12 can be configured in a bent state. In addition, in this structure, the conductor portion 12 can also be configured in a state where at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively. Fig.13 In the plan view shown in (a), the flexible substrate 83 is arranged near the end of the second conductor pattern 17 and near the edge of the side surface 10e of the substrate 10. The end of the second conductor pattern 17 and the side surface 10e of the substrate 10 are arranged at positions separated from each other. Fig.13 As shown in (a) and (b), the transmission line 18 of the first conductor pattern 16 and the flexible substrate 83 are electrically connected at the connection portion 24 via the bonding member 81. The second conductor pattern 17 and the flexible substrate 83 are electrically connected at the connection portion 24 via the bonding member 81.

[0077] Alternatively, you can use Fig.14 and Fig.15 The structure shown. Fig.14 As shown, the second conductor pattern 17 is connected to the first conductor pattern 16 via the flexible substrate 83. At this time, the flexible substrate has a bent portion 80. Further, the flexible substrate 83 extends to a position in the circuit portion 102 that is closer to the side surface 10f than the joint 5, that is, extends to the second portion 4Ab. In the circuit portion 102, the portion existing in the first portion 4Aa is omitted. A connecting portion 24 is provided at a position where the flexible substrate 83 and the first conductor pattern 16 are connected, and a connecting portion 24 is provided at a position where the flexible substrate 83 and the second conductor pattern 17 are connected. In this structure, in addition to the first conductor pattern 16 and the second conductor pattern 17, the conductor portion 12 also includes a conductor pattern of the flexible substrate 83. In this structure, the conductor portion 12 can also be configured in a bent state. In addition, in this structure, the conductor portion 12 can also be configured in a state where at least a portion of the first conductor pattern 16 and at least a portion of the second conductor pattern 17 extend in different directions, respectively. In Fig.15 In the plan view shown in (a), the flexible substrate 83 is arranged near the end of the second conductor pattern 17 and near the edge of the side surface 10e of the substrate 10. The joint 5 is formed on the flexible substrate 83. The end of the second conductor pattern 17 and the side surface 10e of the substrate 10 are arranged at positions separated from each other. Fig.15As shown in (a) and (b), the transmission line 18 of the first conductor pattern 16 and the flexible substrate 83 are electrically connected at the connection portion 24 via the bonding member 81. The second conductor pattern 17 and the flexible substrate 83 are electrically connected at the connection portion 24 via the bonding member 81.

[0078] [Method 1]

[0079] A wiring body, comprising:

[0080] substrate;

[0081] a ground pattern disposed on the substrate; and

[0082] a conductor portion including a first conductor pattern and a second conductor pattern made of metal,

[0083] The ground pattern is a conductor pattern extending in a plane.

[0084] The second conductor pattern is a mesh-shaped conductor pattern connected to the first conductor pattern.

[0085] The conductor portion may be arranged in a bent state.

[0086] [Method 2]

[0087] The wiring body according to embodiment 1, wherein

[0088] The second conductor pattern has a sheet resistance of 1Ω / □ or less.

[0089] [Method 3]

[0090] The wiring body according to aspect 1 or 2, wherein

[0091] When the length of the second conductor pattern is A, the length of the ground pattern is B, and the wavelength of the resonance frequency is λ, equation (1) holds true.

[0092] A-λ / 4<BA……(1)

[0093] [Method 4]

[0094] The wiring body according to any one of aspects 1 to 3, wherein

[0095] The second conductor pattern is arranged in a mesh-shaped groove of a resin layer provided on a base material.

[0096] [Method 5]

[0097] A wiring body, comprising:

[0098] substrate;

[0099] a ground pattern disposed on the substrate; and

[0100] a conductor portion including a first conductor pattern and a second conductor pattern made of metal,

[0101] The ground pattern is a conductor pattern extending in a plane.

[0102] The second conductor pattern is a mesh-shaped conductor pattern connected to the first conductor pattern.

[0103] The conductor portion may be arranged in a state where at least a portion of the first conductor pattern and at least a portion of the second conductor pattern extend in different directions.

[0104] [Method 6]

[0105] A smart glasses, comprising:

[0106] a pair of lens bodies;

[0107] glasses legs, which are arranged on both sides of a pair of lens bodies; and

[0108] The wiring body according to any one of aspects 1 to 5,

[0109] The second conductor pattern is arranged on the lens body, and the substrate is arranged on the temple.

[0110] [Method 7]

[0111] The smart glasses according to method 6, wherein:

[0112] An insulating layer is also provided, which covers the side of the second conductor pattern opposite to the lens body.

[0113] The dielectric constant of the insulating layer is lower than the dielectric constant of a component of the lens body.

[0114] [Method 8]

[0115] The smart glasses according to method 6, wherein:

[0116] The lens body comprises an inner lens portion and an outer lens portion.

[0117] The second conductor pattern is arranged between the inner mirror portion and the outer mirror portion.

[0118] The thickness of the outer lens portion is thinner than the thickness of the inner lens portion.

[0119] [Method 9]

[0120] The smart glasses according to any one of methods 6 to 8, wherein:

[0121] having a plurality of the second conductor patterns,

[0122] At least one second conductor pattern is disposed on each of the lens body on the right eye side and the lens body on the left eye side.

[0123] [Method 10]

[0124] The smart glasses according to any one of methods 6 to 9, wherein:

[0125] having a plurality of the second conductor patterns,

[0126] A plurality of the second conductor patterns are arranged on either the lens body on the right eye side or the lens body on the left eye side.

[0127] [Method 11]

[0128] The smart glasses according to method 10, wherein:

[0129] The second conductor patterns extend in different directions.

Claims

1. A wiring body, wherein: have: substrate; A ground pattern, which is disposed on the substrate; as well as a conductor portion including a first conductor pattern and a second conductor pattern made of metal, The ground pattern is a conductor pattern extending in a plane. The second conductor pattern is a mesh-shaped conductor pattern connected to the first conductor pattern. The conductor portion may be arranged in a bent state.

2. The wiring body according to claim 1, wherein The second conductor pattern has a sheet resistance of 1Ω / □ or less.

3. The wiring body according to claim 1, wherein When the length of the second conductor pattern is A, the length of the ground pattern is B, and the wavelength of the resonance frequency is λ, equation (1) holds. A-λ / 4<BA……(1).

4. The wiring body according to claim 1, wherein The second conductor pattern is arranged in a mesh-shaped groove of a resin layer provided on a base material.

5. A wiring body, wherein: have: substrate; A ground pattern, which is disposed on the substrate; as well as a conductor portion including a first conductor pattern and a second conductor pattern made of metal, The ground pattern is a conductor pattern extending in a plane. The second conductor pattern is a mesh-shaped conductor pattern connected to the first conductor pattern. The conductor portion may be arranged in a state where at least a portion of the first conductor pattern and at least a portion of the second conductor pattern extend in different directions.

6. A smart glasses, wherein: have: a pair of lens bodies; glasses legs, which are arranged on both sides of a pair of lens bodies; and The wiring body according to any one of claims 1 to 5, The second conductor pattern is arranged on the lens body, and the substrate is arranged on the temple.

7. The smart glasses according to claim 6, wherein: An insulating layer is also provided, which covers the side of the second conductor pattern opposite to the lens body. The dielectric constant of the insulating layer is lower than the dielectric constant of a component of the lens body.

8. The smart glasses according to claim 6, wherein: The lens body comprises an inner lens portion and an outer lens portion. The second conductor pattern is arranged between the inner mirror portion and the outer mirror portion. The thickness of the outer lens portion is thinner than the thickness of the inner lens portion.

9. The smart glasses according to claim 6, wherein: having a plurality of the second conductor patterns, At least one second conductor pattern is disposed on each of the lens body on the right eye side and the lens body on the left eye side.

10. The smart glasses according to claim 6, wherein: having a plurality of the second conductor patterns, A plurality of the second conductor patterns are arranged on either the lens body on the right eye side or the lens body on the left eye side.

11. The smart glasses according to claim 10, wherein: The second conductor patterns extend in different directions.

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