Glasses-type device

Abstract

The antenna, as part of the frame, occupies little to no internal space and provides a spectacle-type device with good broadband antenna functionality. [Solution] The eyeglass-type device includes a frame, a first temple, a circuit board, and a flexible circuit board. The frame includes a first metal portion, a second metal portion, and an insulating component connecting the first and second metal portions, the second metal portion being insulated from the first metal portion via the insulating component, and the first and second metal portions together form at least a portion of the outer surface of the frame. The first temple is hinged to the frame. The circuit board is installed inside the first temple. The flexible circuit board is installed in the frame and the first temple and is conductive to the second metal portion and the circuit board, and the flexible circuit board includes an antenna matching circuit. The second metal portion acts as an antenna, and the antenna, in combination with the antenna matching circuit, excites a first frequency band and a second frequency band.

Description

TECHNICAL FIELD

[0001] The present invention relates to a spectacle-type device, and more particularly to a spectacle-type device having an antenna. BACKGROUND ART

[0002] With the development of the communications industry in recent years and growing public demand, AR / VR head-mounted displays have begun to gain widespread adoption. Under the demand for adapting to diverse communication functions and reducing device volume, the problem of difficult antenna design has arisen. How to achieve good wideband antenna performance while meeting miniaturization requirements is a key research direction in the technical field. SUMMARY OF INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0003] The antenna of the spectacle-type device of the present invention is formed as part of the frame, occupies no or almost no internal space, and can achieve excellent wideband antenna performance. MEANS FOR SOLVING THE PROBLEMS

[0004] The spectacle-type device of the present invention includes a frame, a first temple, a circuit board, and a flexible circuit board. The frame includes a first metal portion, a second metal portion, and an insulating component connecting the first metal portion and the second metal portion, the second metal portion being insulated from the first metal portion via the insulating component, and the first metal portion and the second metal portion together form at least a part of the outer surface of the frame. The first temple is hingedly connected to the frame. The circuit board is disposed inside the first temple. The flexible circuit board is disposed on the frame and the first temple, is electrically connected to the second metal portion and the circuit board, and includes an antenna matching circuit. The second metal portion serves as an antenna, and the antenna, in combination with the antenna matching circuit, excites a first frequency band and a second frequency band.

[0005] In one embodiment of the present invention, the insulating component is a single structure, the shape of the insulating component is the same as the shape of the second metal portion, and the second metal portion is fixed to the insulating component.

[0006] In one embodiment of the present invention, the insulating component includes two insulating members and is installed at both ends of the second metal portion.

[0007] In one embodiment of the present invention, the length of the second metal portion is between 0.2 and 0.3 times the wavelength of the first frequency band.

[0008] In one embodiment of the present invention, the above-described spectacle-type device further includes a metal fixing member, and the second metal portion is connected to a flexible circuit board via the metal fixing member.

[0009] In one embodiment of the present invention, the antenna matching circuit includes an inductor and a capacitor.

[0010] In one embodiment of the present invention, the inductor is between 1.0 nH and 1.5 nH, and the capacitor is between 7 pF and 10 pF.

[0011] In one embodiment of the present invention, the glasses-type device further includes a second temple hinged to the frame, and the glasses-type device further includes at least one of a battery and a speaker, and includes an optical module installed within the second temple.

[0012] In one embodiment of the present invention, the above-described eyeglass-type device further includes a camera module mounted on the nose bridge portion of the frame.

[0013] In one embodiment of the present invention, the first frequency band is 2400MHz to 2480MHz, and the second frequency band is 5150MHz to 5850MHz. [Effects of the Invention]

[0014] Based on the above, the first and second metal parts of the frame of the spectacle-type device of the present invention jointly form at least a portion of the external surface of the frame. The second metal part serves as an antenna, and is insulated from the first metal part via an insulating component. Since the antenna is part of the frame, it occupies little to no internal space, and therefore the dimensions of the spectacle-type device can be reduced. Furthermore, the appearance of the spectacle-type device is at least partially metallic, giving it a better texture. In addition, the circuit board is installed in the first temple, the flexible circuit board is electrically connected to the second metal part and the circuit board, and the antenna, in combination with the antenna matching circuit of the flexible circuit board, can excite the first and second frequency bands, providing a good broadband antenna function. [Brief explanation of the drawing]

[0015] [Figure 1] This is a schematic diagram of the external appearance of a spectacle-type device according to one embodiment of the present invention. [Figure 2] Figure 1 is a schematic diagram of the inside of the glasses-type device. [Figure 3] Figure 1 is a schematic diagram illustrating the assembly of the frame, circuit board, and flexible circuit board of the spectacle-type device. [Figure 4] Figure 3 is a schematic diagram showing the flexible circuit board and the second metal part separated. [Figure 5] Figure 4 is a schematic diagram showing the insulating components separated. [Figure 6] Figure 1 is a schematic diagram showing the antenna connected to the circuit board. [Figure 7] Figure 1 shows the relationship between frequency-S11 and the spectacle-type device. [Figure 8] Figure 1 shows the relationship between frequency and antenna efficiency of the spectacle-type device. [Figure 9] A partially exploded schematic diagram of a spectacle-type device according to another embodiment of the present invention. [Modes for carrying out the invention]

[0016] FIG. 1 is a schematic external view of an eyeglass-type device according to an embodiment of the present invention. Referring to FIG. 1, the eyeglass-type device 100 of this embodiment is, for example, AR or VR glasses, but the type of the eyeglass-type device 100 is not limited thereto. The eyeglass-type device 100 includes a frame 110, a first temple 120, and a second temple 160. Both the first temple 120 and the second temple 160 are hinged to the frame 110 and are rotatable relative to the frame 110.

[0017] FIG. 2 is a schematic internal view of the eyeglass-type device of FIG. 1. FIG. 3 is a schematic assembly view of the frame, the circuit board, and the flexible circuit board of the eyeglass-type device of FIG. 1. FIG. 4 is a schematic view in which the flexible circuit board and the second metal part of FIG. 3 are separated. FIG. 5 is a schematic view in which the insulating component of FIG. 4 is separated. FIG. 6 is a schematic view in which the antenna of FIG. 1 is electrically connected to the circuit board.

[0018] Referring to FIG. 2 to FIG. 6, in this embodiment, the frame 110 includes a first metal part 111, a second metal part 112, and an insulating component 114 connecting between the first metal part 111 and the second metal part 112.

[0019] As shown in FIG. 5, the first metal part 111 includes a frame body surrounding the lens on the right side of FIG. 5, a nose pad portion 116, and an upper half portion of the frame body surrounding the lens on the left side of FIG. 5. The insulating component 114 is the lower half portion of the frame body surrounding the lens on the left side of FIG. 5. In this embodiment, the insulating component 114 is a single structure, the shape of the insulating component 114 is identical to the shape of the second metal part 112, and the second metal part 112 is fixed to the insulating component 114.

[0020] That is, the first metal part 111 and the second metal part 112 jointly form the exterior surface of the frame 110. Further, the second metal part 112 is insulated from the first metal part 111 via the insulating component 114, preventing the second metal part 112 from being electrically connected to the first metal part 111. The second metal part 112 can serve as the antenna 113, and the first metal part 111 can serve as the ground plane, which reduces the possibility of affecting the signal of the antenna 113.

[0021] In the glasses-type device of this embodiment, the second metal part 112 serves as the antenna 113. Since the antenna 113 is part of the frame 110, it does not occupy or barely occupies the internal space, and thus the size of the glasses-type device 100 can be reduced. In addition, the appearance of the glasses-type device 100 is at least partially metallic, which has a better texture.

[0022] The materials of the first metal part 111 and the second metal part 112 may be the same or different. The insulating component 114 is, for example, plastic. The second metal part 112 and the insulating component 114 can be separately manufactured and then fixed together again.

[0023] In one embodiment, the second metal part 112 and the insulating component 114 can also be manufactured by a metal-plastic nano-connection technology (NMT) method. In the process of bonding metal and plastic with nanotechnology, the surface of the second metal part 112 is first treated, and then the plastic insulating component 114 is directly injection-molded on the surface of the second metal part 112, so that the second metal part 112 and the insulating component 114 can be integrally formed. Of course, the manufacturing method of the second metal part 112 and the insulating component 114 is not limited thereto.

[0024] As shown in Figure 2, the eyeglass-type device 100 further includes a circuit board 130, a flexible circuit board 140, and a metal fixing member 150. The circuit board 130 is installed inside the first temple 120. The flexible circuit board 140 is installed in the frame 110 and the first temple 120, and the second metal part 112 is connected to the flexible circuit board 140 via the metal fixing member 150. The flexible circuit board 140 is electrically connected to the second metal part 112 and the circuit board 130.

[0025] In other words, the antenna 113 is electrically connected to the circuit board 130 via the metal fixing member 150 and the flexible circuit board 140. In this embodiment, the metal fixing member 150 is, for example, a screw, but the type of metal fixing member 150 is not limited to this. The feed point of the antenna 113 is located close to the metal fixing member 150, and such a design can reduce the influence of the antenna 113's signal on the user's face.

[0026] In this embodiment, the circuit board 130 is, for example, a rigid circuit board, but is not limited to this. In other embodiments, the circuit board 130 may be a flexible circuit board, or a flexible-rigid bonding board. In other embodiments, the circuit board 130 and the flexible circuit board 140 may be two separate components that are then electrically connected and combined to form a flexible-rigid bonding board.

[0027] Furthermore, because the flexible circuit board 140 is thin and flexible, it can bend at the hinge. Compared to coaxial transmission lines that are too thick to pass through the hinge (not shown), the flexible circuit board 140 not only allows electrical conductivity between the antenna 113 and the circuit board 130, but also allows the first temple 120 to rotate smoothly.

[0028] Furthermore, in this embodiment, the flexible circuit board 140 includes an antenna matching circuit 142. The antenna matching circuit 142 is installed on the flexible circuit board 140, which can provide more space on the circuit board 130 for the placement of other components.

[0029] Antenna 113, in combination with antenna matching circuit 142, excites a first frequency band and a second frequency band. In this embodiment, the first frequency band is 2400 MHz to 2480 MHz, and the second frequency band is 5150 MHz to 5850 MHz. The length of the second metal portion 112 is between 0.2 and 0.3 times the wavelength of the first frequency band, for example, 0.25 times the wavelength, and the length of the second metal portion 112 is, for example, 30 millimeters, but is not limited to this.

[0030] Since the length of the second metal portion 112 may be affected by the dimensions of the frame 110, in this embodiment, the antenna 113 (second metal portion 112) can be used in combination with the antenna matching circuit 142 to better excite the required frequency band.

[0031] Specifically, in this embodiment, the antenna matching circuit 142 includes an inductor 144 and a capacitor 146. In one embodiment, the antenna 113 is connected to an RF circuit (not shown) via the antenna matching circuit 142. Specifically, the capacitor 146 is installed between the antenna 113 and the RF circuit. One end of the capacitor 146 is grounded, and the inductor 144 can be connected to the other end of the capacitor 146. In one embodiment, the inductor 144 is between 1.0 nH and 1.5 nH, for example, 1.1 nH. The capacitor 146 is between 7 pF and 10 pF, for example, 8.2 pF. Of course, the type of antenna matching circuit 142 and the ranges of the first and second frequency bands are not limited.

[0032] In this embodiment, the eyeglass-type device 100 further includes at least one of an optical module 170, a battery 172, and a speaker 174, which are installed within the second temple 160. As shown in Figure 2, the optical module 170, the battery 172, and the speaker 174 are installed within the second temple 160, with the optical module 170 positioned close to the frame 110 and the speaker 174 positioned close to the user's ear. The eyeglass-type device 100 also further includes a camera module 176 installed on the nose rest portion 116 of the frame 110.

[0033] Figure 7 is a diagram showing the relationship between frequency and S11 for the glasses-type device in Figure 1. Referring to Figure 7, in this embodiment, S11 in both the first frequency band (2400MHz~2480MHz) and the second frequency band (5150MHz~5850MHz) shows good performance. Therefore, the operating frequency of the antenna 113 can cover the frequency bands of BT2.4G (2402MHz~2480MHz) and Wi-Fi 2.4G / 5G (2400MHz~2480MHz and 5150MHz~5850MHz).

[0034] Figure 8 is a diagram showing the frequency-antenna efficiency relationship of the glasses-type device in Figure 1. Referring to Figure 8, in this embodiment, the antenna 113 has an antenna efficiency of within -13dB in both the first frequency band (2400MHz~2480MHz) and the second frequency band (5150MHz~5850MHz), showing good performance in both cases, and can cover the frequency bands of BT2.4G (2402MHz~2480MHz) and Wi-Fi 2.4G / 5G (2400MHz~2480MHz and 5150MHz~5850MHz).

[0035] Figure 9 is a partially exploded schematic diagram of a spectacle-type device according to another embodiment of the present invention. Referring to Figure 9, the main difference from the spectacle-type device 100 of Figure 5 is that in this embodiment, the insulating component 114a includes two insulating members 115 installed at both ends of the second metal portion 112, and the two insulating members 115 are spaced apart from each other. The second metal portion 112 is connected to the insulating members 115, and the first metal portion 111 and the second metal portion 112 are separated by the insulating members 115.

[0036] Similarly, the second metal portion 112 of the spectacle-type device in this embodiment, acting as an antenna 113, occupies little to no internal space because the antenna 113 is part of the frame 110, thus reducing the dimensions of the spectacle-type device. Furthermore, the appearance of the spectacle-type device is at least partially metallic, resulting in a better texture. In addition, the antenna 113, in combination with the antenna matching circuit 142 of the flexible circuit board 140, can excite the first and second frequency bands, providing a good broadband antenna function.

[0037] In summary, the first and second metal parts of the frame of the spectacle-type device of the present invention jointly form at least a portion of the frame's external surface. The second metal part acts as an antenna, and is insulated from the first metal part via an insulating component. Because the antenna is part of the frame, it occupies little to no internal space, thus reducing the dimensions of the spectacle-type device. Furthermore, the appearance of the spectacle-type device is at least partially metallic, resulting in a better texture. Additionally, the circuit board is installed within the first temple, the flexible circuit board is electrically connected to the second metal part and the circuit board, and the antenna, in combination with the antenna matching circuit of the flexible circuit board, can excite the first and second frequency bands, providing a good broadband antenna function. [Industrial applicability]

[0038] The present invention relates to a spectacle-type device, and more particularly to a spectacle-type device having an antenna. [Explanation of Symbols]

[0039] 100 Glasses-type devices 110 frames 111 1st metal part 112 Second metal part 113 Antenna 114 Insulation Components 114a Insulation component 115 Insulating material 116 Nose bridge 120 First Temple 130 Circuit boards 140 Flexible Circuit Boards 142 Antenna Matching Circuit 144 Inductors 146 Capacitors 150 Metal fixing member 160 Second Temple 170 Optical Modules 172 batteries 174 speakers 176 Camera Module

Claims

1. The frame includes a first metal portion, a second metal portion, and an insulating component connecting the first metal portion and the second metal portion, the second metal portion being insulated from the first metal portion via the insulating component, and the first metal portion and the second metal portion together form at least a portion of the outer surface. A first temple is hinged to the frame, A circuit board installed inside the first temple, The frame and the first temple are installed on the flexible circuit board which is electrically connected to the second metal part and the circuit board and includes an antenna matching circuit, Equipped with, The second metal portion acts as an antenna, and the antenna, in combination with the antenna matching circuit, excites the first frequency band and the second frequency band. An eyeglass-type device wherein the insulating component is a single structure, the shape of the insulating component is the same as the shape of the second metal part, and the second metal part is fixed to the insulating component.

2. The spectacle-type device according to claim 1, wherein the length of the second metal portion is between 0.2 and 0.3 times the wavelength of the first frequency band.

3. The spectacle-type device according to claim 1, further comprising a metal fixing member, wherein the second metal portion is connected to the flexible circuit board via the metal fixing member.

4. The spectacle-type device according to claim 1, wherein the antenna matching circuit includes an inductor and a capacitor.

5. The spectacle-type device according to claim 4, wherein the inductor is between 1.0 nH and 1.5 nH, and the capacitor is between 7 pF and 10 pF.

6. The spectacle-type device according to claim 1, further comprising a second temple hinged to the frame, and further comprising an optical module installed within the second temple, comprising at least one of a battery and a speaker.

7. The eyeglasses-type device according to claim 1, further comprising a camera module installed on one nose bridge portion of the frame.

8. The spectacle-type device according to claim 1, wherein the first frequency band is 2400 MHz to 2480 MHz, and the second frequency band is 5150 MHz to 5850 MHz.

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