Laminated glass and manufacturing method for laminated glass

Abstract

The present invention relates to a laminated glass and a manufacturing method for a laminated glass, the laminated glass comprising: a first glass; a second glass spaced apart from the first glass in a reference direction and including a first hole perforated in the reference direction; an antenna disposed between the first glass and the second glass; a circuit board penetrating through the first hole and connected to the antenna; and a cover unit coupled to a side surface of the first glass in the reference direction and extending along the edge of the side surface of the first glass in the reference direction, wherein, when viewed in the reference direction, the cover unit can cover the first hole.

Description

Laminated glass and method for manufacturing laminated glass

[0001] The present invention relates to laminated glass and a method for manufacturing laminated glass.

[0002] Recently, as vehicle-to-vehicle wireless communication services such as CV2X (Cellular Vehicle to Everything communication) have become commercialized, vehicles are also being equipped with equipment to support these new services.

[0003] Vehicles may be equipped with shark fin antennas for wireless communications. Shark fin antennas can receive electrical signals such as 4G (LTE), eCall, ISM wireless communication bands, GPS / GNSS, and DMB / DBA / ISDB-T.

[0004] Since the shark fin antenna is a configuration that is attached to the exterior of the vehicle, there is the hassle of having to consider aerodynamic and aesthetic factors. Recently, transparent antenna film has been gaining attention in the market as an alternative for incorporating such shark fin antennas into vehicles.

[0005] A transparent antenna film for vehicles can be positioned inside the vehicle's windshield. For example, the transparent antenna film can be placed on the windshield. However, since the windshield is inserted into the metal frame of the vehicle, the antenna film suffers from radio interference from the frame.

[0006] To minimize this interference, it is recommended to separate the antenna film from the vehicle frame. However, this can increase the length of the section that supplies electricity to the antenna film. This increase in length can reduce the signal reception rate of the antenna film.

[0007] Therefore, there is a need to develop a technology that can efficiently arrange components while minimizing radio interference.

[0008] The object of the present invention is to provide a laminated glass and a method for manufacturing laminated glass that can secure a signal reception rate of an antenna film while minimizing radio interference applied to an antenna film placed inside a vehicle's glass.

[0009] In one example, the laminated glass includes a first glass, a second glass spaced apart from the first glass along a reference direction and including a first hole penetrating through the first glass along the reference direction, an antenna disposed between the first glass and the second glass, a circuit board penetrating the first hole and connected to the antenna, and a cover portion bonded to a surface of the first glass in the reference direction and extending along an edge of the surface of the first glass in the reference direction, wherein when viewed along the reference direction, the cover portion can cover the first hole.

[0010] In another example, the first intermediate layer is in contact with the reference direction side of the first glass, and the second intermediate layer is in contact with the opposite direction side of the reference direction of the second glass, and a second hole is formed in the second intermediate layer, which is in communication with the first hole and has a shape corresponding to the first hole, and the circuit board can penetrate the first hole and the second hole.

[0011] In another example, the antenna is mounted on the opposite side of the reference direction of the second intermediate layer, and the circuit board includes a first portion having one end connected to the antenna and mounted on the opposite side of the reference direction of the second intermediate layer, a second portion extending in the reference direction from the other end of the first portion and penetrating the first hole and the second hole, and a third portion extending from the end of the second portion on the reference direction side and contacting the surface on the reference direction side of the second glass, and a direction in which the first portion extends from the second portion and a direction in which the third portion extends from the second portion may correspond to each other.

[0012] In another example, the laminated glass may further include a sealant that fills the remaining area of ​​the first hole and the second hole, excluding the area occupied by the circuit board.

[0013] In another example, the antenna may be a CPWG (Co-Planar Waveguide with Ground) antenna, the circuit board may be a FPCB (Flexible Printed Circuit Board), the length of the circuit board may be 20 mm to 70 mm, and the sealant may be a thermoplastic resin.

[0014] In another example, when viewed along the reference direction, the antenna may include an area that does not overlap with the cover portion.

[0015] In one example, a method for manufacturing laminated glass may include a preparation step of preparing first glass and second glass, a first drilling step of drilling a first hole in the second glass, an antenna assembly step of placing an antenna between the first glass and the second glass and penetrating a circuit board connected to the antenna into the first hole, and a sealing step of filling the first hole with a sealant.

[0016] In another example, the second intermediate layer may further include a second intermediate layer mounting step of mounting a second intermediate layer on the second glass, and a second perforation step of forming a second hole in the second intermediate layer that is in communication with the first hole and has a shape corresponding to the first hole.

[0017] In another example, in the antenna assembly step, the circuit board may penetrate the first hole and the second hole, and in the sealing step, the sealant may be filled in the first hole and the second hole.

[0018] According to the present invention, the vehicle frame and the antenna film can be sufficiently spaced apart, so that radio interference applied to the antenna film can be minimized.

[0019] In addition, according to the present invention, the length of the portion that supplies an electric signal to the antenna film can be shortened while separating the antenna film from the vehicle frame, so that the reception rate of the antenna film can be sufficiently secured.

[0020] FIG. 1 is a drawing illustrating a laminated glass according to one embodiment of the present invention.

[0021] Figure 2 is a cross-sectional view of a laminated glass according to one embodiment of the present invention.

[0022] Figure 3 is an exploded perspective view of a laminated glass according to one embodiment of the present invention.

[0023] Figure 4 is a drawing showing the antenna, circuit board, and cover portion as viewed from a reference direction.

[0024] Figure 5 is a flowchart showing a method for manufacturing laminated glass according to one embodiment of the present invention.

[0025] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, identical components are given the same reference numerals, wherever possible, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, detailed descriptions of known components or functions will be omitted if they are deemed to hinder understanding of the embodiments of the present invention.

[0026] <One example>

[0027] The laminated glass (100) according to one embodiment of the present invention may be glass used in a vehicle. For example, the laminated glass (100) may be used as a windshield of a vehicle. However, this is not a limitation, and the laminated glass (100) may be applied to various devices and facilities to which it can be applied.

[0028] <1st glass (110), 2nd glass (120)>

[0029] FIG. 1 is a drawing illustrating a laminated glass according to one embodiment of the present invention. FIG. 2 is a cross-sectional view of a laminated glass according to one embodiment of the present invention. FIG. 3 is an exploded perspective view of a laminated glass according to one embodiment of the present invention. FIG. 4 is a drawing illustrating an antenna, a circuit board, and a cover portion as viewed from a reference direction (D).

[0030] The laminated glass (100) may include a first glass (110), a second glass (120), an antenna (130), a circuit board (140), and a cover (150). The first glass (110) may be a glass placed on the outermost side of the vehicle. The first glass (110) may be in contact with the vehicle frame (F).

[0031] The second glass (120) may be spaced apart along a reference direction (D). The reference direction (D) may be a direction from the outside to the inside of the vehicle. A first hole (121) penetrating along the reference direction (D) may be formed in the second glass (120). The second glass (120) may be in contact with the vehicle frame (F).

[0032] The first glass (110) and the second glass (120) may be composed of one or more selected from the group consisting of flat glass, float glass, quartz glass, borosilicate glass, soda lime glass, transparent plastic, rigid transparent plastic, polyethylene (PE), polypropylene (PP), polycarbonate (PC), polymethyl methacrylate, polystyrene, polyamide, polyester, and polyvinyl chloride.

[0033] Additionally, the first glass (110) and the second glass (120) may be formed transparently. In the present specification, a glass plate having a transmittance of more than 70% in the visible light spectrum range may be considered transparent.

[0034] For example, the first glass (110) and the second glass (120) may have a thickness of 0.7 mm to 25 mm, preferably 1.4 mm to 2.5 mm. The shapes of the first glass (110) and the second glass (120) may correspond to each other or may be different from each other, and this may be determined by the use of the laminated glass (100).

[0035] Antenna (130)

[0036] The antenna (130) may be placed between the first glass (110) and the second glass (120). For example, the antenna (130) may include a radiation pattern (131) and a base (132) placed on the reference direction (D) side of the radiation pattern (131).

[0037] The radiation pattern (131) can be manufactured by any one method selected from printing, plating, etching, and laser patterning. The conductive layer of the patterned antenna (130) can be formed of any one material selected from copper (Cu), nickel (Ni), silver (Ag), aluminum (Al), gold (Au), platinum (Pt), or an alloy thereof, or any one material selected from graphene, carbon nanotubes (CNT), carbon nanowires, and silver (Ag) paste.

[0038] The thickness of the conductive layer pattern can be relatively large compared to the width, or it can have a 1:1 ratio. The conductive layer can be printed in polygonal shapes such as squares or rectangles, repeating patterns, or irregular patterns. An example of an irregularly shaped pattern is a Voronoi diagram.

[0039] The base (132) may be composed of one or more selected from the group consisting of plastic, polycarbonate (PC), acrylonitrile butadiene styrene copolymer (ABS), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polybutylene terephthalate (PBT), polyamide, or polyethylene terephthalate (PET).

[0040] The antenna (130) may be a CPWG (Co-Planar Waveguide with Ground) antenna. Additionally, the antenna (130) may be a transparent film-shaped antenna.

[0041]

[0042] The antenna (130) may be positioned apart from the vehicle frame (F). At this time, the distance at which the first hole (121) is positioned apart from the vehicle frame (F) may be shorter than the distance at which the antenna (130) is positioned apart from the vehicle frame (F). For example, the antenna (130) may be positioned apart from the vehicle frame (F) by 10 mm to 41 mm. At this time, the first hole (121) may be positioned apart from the vehicle frame (F) by 5 mm to 30 mm.

[0043] When the distance of the first hole (121) is within the above-mentioned range, the cover part (150) covers the first hole (121) filled with the sealant (180) so that it is not exposed to an observer outside the vehicle, resulting in a good appearance, and the radio interference from the vehicle frame (F) is reduced, so that the reception rate can be improved. On the other hand, when it is less than the above-mentioned range, the reception rate can be reduced due to the radio interference from the vehicle frame (F), and when it exceeds the above-mentioned range, the first hole (121) filled with the sealant (180) can be exposed to an observer outside the vehicle, resulting in a bad appearance.

[0044] Circuit board (140)

[0045] The circuit board (140) may pass through the first hole (121) and be connected to the antenna (130). The circuit board (140) may be an element that connects an external power source and the antenna (130). For example, the circuit board (140) may be connected to a coaxial cable (C), and the coaxial cable (C) may be connected to a TCU (T, Telematics Control Unit).

[0046] The circuit board (140) may be a flexible printed circuit board (FPCB). In addition, the circuit board (140) may simultaneously function as a grounding portion and a waveguide. For this purpose, a co-planar waveguide with ground (CPWG) may be printed on the circuit board (140). The circuit board (140) may have a length of 20 mm to 70 mm.

[0047] Since the antenna (130) is a CPWG antenna (130) and the circuit board (140) performs the role of a grounding portion and a waveguide, the thickness of the antenna (130) can be formed thinner than in the case where the grounding portion and the waveguide are formed on the reference direction (D) side of the antenna (130).

[0048] Meanwhile, the circuit board (140) may include a substrate material and a circuit pattern. The substrate material may be a film made of PI (Poly Imide), PET (Poly Ethylene Terephthalate), PC (Poly Carbonate), or PES (Poly Ether Sulfone).

[0049] The circuit pattern may include a deposition seed layer and a circuit plating layer. The circuit plating layer may be formed by plating on the deposition seed layer. The circuit plating layer may be formed to cover only the upper surface of the deposition seed layer excluding the periphery of the deposition seed layer.

[0050] The deposition seed layer may be one of copper (Cu), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), tungsten (W), molybdenum (Mo), aluminum (Al), or an alloy containing at least one of these. The circuit plating layer may be any one of gold, silver, or copper.

[0051] One or more circuit boards (140) may be provided. For example, as illustrated in the drawing, the circuit boards (140) may be provided in pairs. However, this is not limited to this, and it may be possible to have one or three or more circuit boards depending on the user's needs.

[0052] <Cover part (150)>

[0053] The cover portion (150) is bonded to the reference direction (D) side surface of the first glass (110) and may extend along the edge of the reference direction (D) side surface of the first glass (110). For reference, in FIG. 2, the cover portion (150) is illustrated as having a sufficient thickness for explanation, but in reality, the cover portion (150) may be formed very thinly and may protrude by a small length from the reference direction (D) side surface of the first glass (110). The cover portion (150) may be black enamel.

[0054] When viewed along the reference direction (D), the cover portion (150) can cover the first hole (121). If the cover portion (150) does not cover the first hole (121), the first hole (121) may be exposed to an observer outside the vehicle, thereby degrading the appearance. The laminated glass (100) according to one embodiment of the present invention can improve the appearance by covering the first hole (121) through the cover portion (150).

[0055] Additionally, when viewed along the reference direction (D), the antenna (130) may include an area that does not overlap with the cover portion (150). This may be to secure a sufficient separation distance between the vehicle frame (F) and the antenna (130) as described above.

[0056] According to one embodiment of the present invention, since the antenna (130) can be spaced apart from the vehicle frame (F) by a predetermined distance, radio interference received from the vehicle frame (F) can be reduced, and since the circuit board (140) is penetrated through the first hole (121) and the antenna (130) and the TCU (T) are electrically connected through the penetrated circuit board (140), a decrease in the reception rate of the antenna (130) that occurs as the circuit board (140) is formed long can be prevented.

[0057]

[0058] Hereinafter, the reception performance of the antenna according to the length of the circuit board will be described in detail. Table 1 is a table showing the reception performance of the antenna (130) according to the presence or absence of perforation and the length of the circuit board. If the perforation is marked with an 'X', it may mean that the laminated glass (100) does not include the first hole (121) and the second hole (171), and the circuit board (140) extends along the outer edge of the laminated glass (100) and is connected to the external TCU. For the experiment, a vehicle for evaluating the performance of the antenna (130) was placed in an anechoic chamber, and then the signal strength was measured using a Network Analyzer (E8361A PNA). More specifically, the signal strength was measured by sending a signal of a predetermined frequency to the antenna (130) using the Network Analyzer and then detecting the returning signal. At this time, the Gain indicated in the table is the difference measured by comparing the strength with that of an omnidirectional antenna (130). That is, a larger absolute value of the gain may mean a greater decrease in reception rate. First, when measurement was performed using a 10 mm long circuit board (140) without perforation, a short circuit occurred in the circuit board (140), making measurement impossible.

[0059] Secondly, when measurements were performed using a circuit board (140) 80 mm long without perforation, it was confirmed that the reception rate was lowered compared to the third to fifth measurement values ​​with perforation, as shown in the table.

[0060] Below, the measurement values ​​for the laminated glass (100) in which the first hole (121) is formed will be described in detail. At this time, the first hole (121) is formed through drilling at a distance of 16 mm from the vehicle frame (F) and has a radius of 7 mm.

[0061] As can be seen from the third to fifth results, it can be confirmed that the longer the circuit board (140) is, the lower the reception rate is in all frequency ranges. Accordingly, it can be confirmed that the shorter the circuit board (140) is, the higher the reception rate can be.

[0062] According to one embodiment of the present invention, the laminated glass (100) can increase the reception rate by minimizing the length of the circuit board (140) through the first hole (121), while reducing radio interference received by the antenna (130) from the vehicle frame (F).

[0063] <First intermediate layer (160), second intermediate layer (170)>

[0064] The laminated glass (100) according to one embodiment of the present invention may further include a first intermediate layer (160) and a second intermediate layer (170). The first intermediate layer (160) may be in contact with the reference direction (D) side of the first glass (110). The second intermediate layer (170) may be in contact with the side opposite to the reference direction (D) of the second glass (120).

[0065] The first intermediate layer (160) and the second intermediate layer (170) may contain at least one plastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and / or polyethylene terephthalate (PET).

[0066] The first intermediate layer (160) and the second intermediate layer (170) may also include, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethylmethacrylate, polyvinyl chloride, polyacetate resin, casting resin, acrylate, fluorinated ethylene propylene, polyvinyl fluoride and / or ethylene tetrafluoroethylene, or copolymers or mixtures thereof. The first intermediate layer (160) and the second intermediate layer (170) may be thermoplastic.

[0067] The first intermediate layer (160) and the second intermediate layer (170) may be formed as a single film, or may be formed by a plurality of films arranged in parallel along the reference direction (D). The thickness of the first intermediate layer (160) and the second intermediate layer (170) may be 0.025 mm to 1 mm.

[0068] A second hole (171) may be formed in the second intermediate layer (170). The second hole (171) may be in communication with the first hole (121) and may have a shape corresponding to the first hole (121). At this time, the circuit board (140) may pass through the first hole (121) and the second hole (171). In addition, the antenna (130) may be mounted on the side opposite to the reference direction (D) of the second intermediate layer (170).

[0069] The circuit board (140) may include a first portion (141), a second portion (142), and a third portion (143). The first portion (141) may be a portion having one end connected to the antenna (130) and mounted on a side opposite to the reference direction (D) of the second intermediate layer (170). The second portion (142) may be a portion extending from the other end of the first portion (141) in the reference direction (D) and penetrating through the first hole (121) and the second hole (171). The third portion (143) may be a portion extending from an end of the second portion (142) on the reference direction (D) side and contacting a surface of the second glass (120) on the reference direction (D) side.

[0070] The direction in which the first part (141) extends from the second part (142) and the direction in which the third part (143) extends from the second part (142) may correspond to each other. The direction in which the first part (141) extends from the second part (142) may correspond to the direction from the vehicle frame (F) toward the first hole (121). This may mean that the circuit board (140) is similar to a 'U' shape overall.

[0071] Sealant (180)

[0072] The laminated glass (100) according to one embodiment of the present invention may further include a sealant (180). The sealant (180) may be filled in the remaining area of ​​the first hole (121) and the second hole (171) excluding the area occupied by the circuit board (140). At this time, the sum of the length of the first hole (121) along the reference direction (D) and the length of the second hole (171) along the reference direction (D) may correspond to the length of the sealant (180) along the reference direction (D).

[0073] As described above, a first hole (121) is formed in the second glass (120), and a second hole (171) is formed in the second intermediate layer (170). Therefore, if the cut portion is exposed to the outside, moisture may infiltrate through that portion. This moisture infiltration may cause bubbles to form inside the glass, thereby detracting from the aesthetic appearance.

[0074] According to one embodiment of the present invention, the laminated glass (100) can prevent moisture penetration by sealing the remaining area, excluding the area occupied by the circuit board (140), among the first hole (121) and the second hole (171) through a sealant (180).

[0075] The sealant (180) may be a thermoplastic resin. In addition, the sealant (180) may be hydrophobic. The sealant (180) may be composed of one or more selected from the group consisting of thermoplastic polyurethane (TPU), silicone resin (Si), epoxy, high-density polyethylene (HDPE), polyvinyl chloride (PVC), ethylene vinyl acetate (EVA), and polyethylene terephthalate (PET).

[0076] <Laminated Glass Manufacturing Method>

[0077] Figure 5 is a flowchart illustrating a method for manufacturing laminated glass according to one embodiment of the present invention. Hereinafter, a method for manufacturing laminated glass (100) according to one embodiment of the present invention will be described in detail based on the aforementioned contents and drawings.

[0078] The method for manufacturing laminated glass may include a preparation step (S100), a first perforation step (S200), an antenna assembly step (S500), and a sealing step (S600). For reference, the above processes are only a list of essential steps of the method for manufacturing laminated glass, and the method for manufacturing laminated glass is not limited to the above steps.

[0079] The preparation step (S100) may be a step of preparing the first glass (110) and the second glass (120). Preparing the first glass (110) and the second glass (120) may include a process of inserting a glass plate, cutting it, and then polishing the edges.

[0080] The first perforation step (S200) may be a step of perforating a first hole (121) in the second glass (120). At this time, the perforation of the first hole (121) may be performed using a diamond drill.

[0081] The antenna assembly step (S500) may be a step of placing an antenna (130) between the first glass (110) and the second glass (120) and passing a circuit board (140) connected to the antenna (130) through the first hole (121).

[0082] The sealing step (S600) may be a step of filling the first hole (121) with a sealant (180).

[0083] After the sealing step (S600), an inspection step may be performed. The inspection step may include an optical inspection process and a visual inspection process.

[0084] A method for manufacturing laminated glass according to one embodiment of the present invention may further include a second intermediate layer anchoring step (S300) and a second perforation step (S400). The second intermediate layer anchoring step (S300) and the second perforation step (S400) may be performed between the first perforation step (S200) and the antenna assembly step (S500).

[0085] The second intermediate layer settling step (S300) may be a step of settling the second intermediate layer (170) on the second glass (120).

[0086] The second perforation step (S400) may be a step of forming a second hole (171) in the second intermediate layer (170). In the antenna (130) assembling step, the circuit board (140) may penetrate the first hole (121) and the second hole (171). In the sealing step, a sealant (180) may be filled in the first hole (121) and the second hole (171).

[0087] Below, the steps that can be provided between each step are described in more detail.

[0088] Between the first perforation step (S200) and the second intermediate layer settling step (S300), a first washing and drying step, a printing and curing step, a molding step, and a second washing and drying step may be further performed.

[0089] The first washing and drying step may be a step of washing and drying the first glass (110) and the second glass (120) in which the first hole (121) has been perforated.

[0090] The printing and curing step may be a step of forming a cover portion (150) by applying black enamel to the reference direction (D) side of the first glass (110) and then curing it by irradiating it with ultraviolet rays.

[0091] The forming step may be a step of placing the first glass (110) and the second glass (120) in a mold and then heating them to bend the shape of the first glass (110) and the second glass (120).

[0092] The second washing and drying step may be a step of washing and drying the first glass (110) and the second glass (120) for which the forming step has been completed.

[0093] Between the sealing step (S600) and the antenna assembly step (S500), a first intermediate layer mounting step and a bonding step may be performed.

[0094] The first intermediate layer settling step may be a step of settling the first intermediate layer (160) on the second intermediate layer (170). As the first intermediate layer settling step is performed, the antenna (130) may be placed between the second intermediate layer (170) and the first intermediate layer (160).

[0095] The bonding step may be a step of bonding the first glass (110) and the second glass (120) by pressurizing and heating the first glass (110) and the second glass (120).

[0096] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate, rather than limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. First glass; A second glass spaced apart from the first glass along a reference direction and including a first hole penetrating along the reference direction; An antenna disposed between the first glass and the second glass; A circuit board penetrating the first hole and connected to the antenna; and A cover portion is coupled to the reference direction side surface of the first glass and extends along the edge of the reference direction side surface of the first glass, When viewed along the above reference direction, the cover portion is a laminated glass that covers the first hole.

2. In claim 1, A first intermediate layer in contact with the reference direction side of the first glass; Further comprising a second intermediate layer in contact with the side opposite to the reference direction of the second glass, In the second intermediate layer, a second hole is formed that is connected to the first hole and has a shape corresponding to the first hole. The circuit board is a bonded glass that penetrates the first hole and the second hole.

3. In claim 2, The above antenna is mounted on the opposite side of the reference direction of the second intermediate layer, The above circuit board, A first part, one end of which is connected to the antenna and is mounted on the opposite side of the reference direction of the second intermediate layer; A second part extending in the reference direction from the other end of the first part and penetrating through the first hole and the second hole; and A third portion extending from the reference direction side end of the second portion and contacting the reference direction side surface of the second glass, A laminated glass in which the direction in which the first part extends from the second part and the direction in which the third part extends from the second part correspond to each other.

4. In claim 2, A laminated glass further comprising a sealant that fills the remaining area of ​​the first hole and the second hole, excluding the area occupied by the circuit board.

5. In claim 4, The above antenna is a CPWG (Co-Planar Waveguide with Ground) antenna, The above circuit board is a flexible printed circuit board (FPCB). The length of the above circuit board is 20 mm to 70 mm, The above sealant is a thermoplastic resin, laminated glass.

6. In claim 1, When looking along the above reference direction, The above antenna is a laminated glass including an area that does not overlap with the cover portion.

7. In a method for manufacturing laminated glass, Preparatory step of preparing the first and second glasses; A first perforation step of perforating a first hole in the second glass; An antenna assembly step of placing an antenna between the first glass and the second glass and penetrating a circuit board connected to the antenna into the first hole; and A method for manufacturing laminated glass, comprising a sealing step of filling a sealant into the first hole.

8. In claim 7, A second intermediate layer fixing step of fixing a second intermediate layer on the second glass; and A method for manufacturing laminated glass, further comprising a second perforation step in which a second hole is formed in the second intermediate layer, the second hole being in communication with the first hole and having a shape corresponding to the first hole.

9. In claim 8, In the above antenna assembly step, The above circuit board penetrates the first hole and the second hole, In the above sealing step, A method for manufacturing laminated glass, wherein the sealant is filled in the first hole and the second hole.

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