WO2022210251A1 - アース構造付き車両用合わせガラス - Google Patents
アース構造付き車両用合わせガラス Download PDFInfo
- Publication number
- WO2022210251A1 WO2022210251A1 PCT/JP2022/013915 JP2022013915W WO2022210251A1 WO 2022210251 A1 WO2022210251 A1 WO 2022210251A1 JP 2022013915 W JP2022013915 W JP 2022013915W WO 2022210251 A1 WO2022210251 A1 WO 2022210251A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laminated glass
- power supply
- glass
- functional layer
- intermediate film
- Prior art date
Links
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Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0067—Devices for protecting against damage from electrostatic discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
- B32B17/10201—Dielectric coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10293—Edge features, e.g. inserts or holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
- B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/001—Double glazing for vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/06—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for removing electrostatic charges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
Definitions
- the present invention relates to laminated glass for vehicles with a ground structure.
- a functional layer having various functions is provided between one glass and the other glass, and the functional layer is driven by power supply from an external power source so as to exhibit a desired function.
- a laminated glass for a vehicle that realizes is known (for example, Patent Document 1).
- Patent Document 1 discloses a laminated glass in which an organic EL panel layer, a light control device layer, or an anti-fogging device layer is bonded via an intermediate film between a first glass plate and a second glass plate. ing. These functional layers having various functions are connected to thin strip-shaped conductors, which are supplied with power from a power source.
- An electrostatic protection element is known as one of the static electricity countermeasures for the semiconductor components in the functional layer, but it is difficult to mount the electrostatic protection element due to its low followability to material deformation when laminated glass is laminated.
- the semiconductor components in the functional layer are electrically floating, it is structurally difficult to implement shielding/grounding as a countermeasure against static electricity.
- the present invention has been made in view of the above problems, and provides a laminated glass for vehicles with a grounding structure, in which static electricity countermeasures are taken for electrically driven functional layers.
- a laminated glass for a vehicle with a ground structure includes a first glass plate, an intermediate film, and a second glass plate laminated in this order, and the intermediate film comprises an electrically driven functional layer, a power supply member electrically connected to the functional layer; a first circuit in which the power supply member and the functional layer are connected in series; and a second circuit, wherein the second circuit has a dielectric in at least one location within the second circuit, and the ground member is grounded.
- FIG. 1 is a plan view of a laminated glass for a vehicle with an earth structure according to a first embodiment
- FIG. 1 is a perspective view of a laminated glass for a vehicle with an earth structure according to a first embodiment
- FIG. 1 is a cross-sectional view of a laminated glass for a vehicle with an earth structure according to a first embodiment
- FIG. 3 is another cross-sectional view of the laminated glass for vehicle with the grounding structure according to the first embodiment.
- FIG. 10 is a perspective view of a laminated glass for vehicle with an earthing structure according to a second embodiment
- top and bottom represent the top and bottom, respectively, when the laminated glass for vehicles with a ground structure is mounted on the vehicle.
- the “side edge” of laminated glass for vehicles with a ground structure represents the portion connecting the upper edge and the lower edge.
- cross section refers to a cut edge when the laminated glass for vehicles with an earthing structure is cut in the thickness direction, or a side surface of the laminated glass for vehicles with an earthing structure.
- side surface does not mean a term limited to a surface including sides.
- the "peripheral edge” represents the outermost side of a predetermined member, and the “peripheral edge portion” represents the vicinity of the "peripheral edge”.
- the "peripheral edge” may also be referred to as an “outer edge” and may be distinguished from the “inner edge", which is the outer peripheral side of the hollow.
- isomorphic means having the same shape as seen by humans. And, unless otherwise stated, abbreviation means that people look the same. Also, “ ⁇ ”, which indicates a numerical range, includes upper and lower limits.
- the laminated glass for vehicles with a grounding structure according to the embodiment of the present invention can be applied to, for example, windshields, rear glasses, side glasses, roof glasses, quarter glasses, and the like.
- FIG. 1 A first embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
- FIG. 1 In each drawing, in order to make each component easy to see, the dimensional scale is changed for each component, and the curved shape is also shown as a plane shape.
- FIG. 1 is a plan view illustrating a laminated glass for vehicles with a ground structure according to this embodiment.
- the laminated glass for vehicles with a grounding structure is hereinafter simply referred to as "laminated glass".
- the laminated glass 100 has a first glass plate 10, a second glass plate 20, and an intermediate film 30 arranged therebetween, which have the same main surface. And the 1st glass plate 10, the intermediate film 30, and the 2nd glass plate 20 are laminated
- the central axis (not shown) of the laminated glass 100 is defined as an imaginary line in the thickness direction passing through the center of gravity G of the laminated glass 100 .
- the central axis of the laminated glass 100 is also the Z-axis direction in FIG.
- the laminated glass 100 has a substantially trapezoidal shape in plan view, but is not limited to this.
- the laminated glass 100 may have, for example, a substantially triangular shape or a substantially rectangular shape in plan view depending on the part of the vehicle in which it is mounted.
- a plan view of the laminated glass 100 and a plan view of the first glass plate 10 mean that the laminated glass 100 is placed on a horizontal plane with the first glass plate 10 facing up and viewed from vertically above the horizontal plane.
- a cross-sectional view refers to viewing from a direction perpendicular to a predetermined cross section of the laminated glass 100 .
- At least a part of the cross section in the vertical direction of the laminated glass 100 may be substantially wedge-shaped with gradually decreasing thickness.
- Laminated glass whose cross-sectional shape in the vertical direction is wedge-shaped in which at least a portion thereof becomes thicker from the bottom to the top is suitable for functioning as a head-up display (HUD), and can be particularly suitably used for a windshield.
- HUD head-up display
- the laminated glass 100 In order for the laminated glass 100 to have such a cross-sectional shape, for at least one of the first glass plate 10, the second glass plate 20, and the interlayer 30, at least a portion of the cross section in the vertical direction is substantially wedge-shaped. Any shape is acceptable.
- the laminated glass 100 has the functional layer 40 inside the intermediate film 30 .
- the peripheral edge of the functional layer 40 exists inside the peripheral edge of the first glass plate 10 .
- the “inner side” represents the central axis direction passing through the center of gravity G of the laminated glass 100 when viewed from the periphery of a predetermined member (here, the first glass plate 10).
- “outside” represents the peripheral direction of a predetermined member (here, the first glass plate 10) when viewed from the central axis passing through the center of gravity G of the laminated glass 100. As shown in FIG.
- a power supply member 50 is electrically connected to the functional layer 40 . That is, the power supply member 50 and the functional layer 40 are connected in series to form a first circuit.
- the end (contact) of the power supply member 50 on the functional layer 40 side may be directly electrically connected to the functional layer 40, or may be electrically connected via a transparent conductive film or a foil-shaped conductor called a bus bar. may be
- the connection method may be any known means.
- the power supply member 50 is a flexible connection member in which at least two power supply lines that supply different potentials during operation of the functional layer 40 are covered with an insulating member 53 .
- the power supply member 50 has a power supply line 51 and a power supply line 52 inside the insulating member 53 , and the ends of these include portions (contacts) connected to the functional layer 40 and are covered with the insulating member 53 .
- the end (non-contact) of the power supply member 50 opposite to the functional layer 40 is also not covered with the insulating member 53, but may be covered if necessary.
- the power supply line 51 and the power supply line 52 are connected to the functional layer 40 at their ends (contacts) via, for example, solder or an anisotropic conductive film (ACF).
- ACF anisotropic conductive film
- the power supply line 51 and the power supply line 52 are spaced apart in the insulating member 53 and arranged so that they are not electrically short-circuited.
- the end (non-contact) of the power supply member 50 opposite to the functional layer 40 can be connected to an electronic control unit (ECU) of the vehicle.
- ECU electronice control unit
- the ESD shield 60 is arranged so as to overlap at least part of the power supply member 50 . Specifically, the ESD shield 60 overlaps part of the ends (contacts) of the feeder lines 51 and 52 and part of the insulating member 53 . The end of the ESD shield 60 in the positive Y-axis direction is aligned with the positive Y-axis end of the feeder lines 51 and 52 or the positive Y-axis end of the insulating member 53 . may Such arrangement makes it easy for the intermediate film 30 to be in close contact with the ESD shield 60 and the power supply member 50, so that the circuit (mainly the second circuit, which will be described later) is less likely to be defective.
- the circuit mainly the second circuit, which will be described later
- the ESD shield 60 may overlap the feed line 51 and the feed line 52 on the negative Y-axis direction side of the ends (contacts) without overlapping the ends (contacts).
- the positive Y-axis direction can be rephrased as the direction from the end (non-contact) of the power supply member 50 on the side opposite to the functional layer 40 toward the end (contact) on the functional layer side.
- the ESD shield 60 is an ESD (Electro-Static Discharge) countermeasure member, and is a flexible conductive member arranged to prevent static electricity discharged to the laminated glass 100 from reaching the functional layer 40. is. Even if static electricity flows through the power supply line 51 or the power supply line 52 , the grounded ESD shield 60 can effectively release the static electricity to the outside of the laminated glass 100 .
- ESD Electro-Static Discharge
- the ESD shield 60 is electrically connected to the ground member 55. That is, the power supply member 50, the ESD shield 60, and the ground member 55 are connected in series with a dielectric at least one of them, forming a second circuit. In other words, the second circuit is also a circuit that, by including a dielectric, remains electrically insulating during normal operation of the functional layer.
- the ground member 55 is a flexible connection member in which the ground wire 56 is covered with an insulating member. The outline of the ground line 56 is represented by the dashed dotted line in FIG. A ground member 55 grounds the ESD shield 60 .
- the laminated glass 100 may be provided with a strip-shaped light shielding part 90 on the peripheral edge as shown in FIG.
- the light shielding part 90 may consist of one layer or may consist of multiple layers.
- the light shielding portion 90 can at least partially hide the periphery of the functional layer 40, the power supply member 50, the ground member 55, the ESD shield 60, and the like.
- FIG. 2 is a perspective view illustrating the laminated glass for vehicles with a ground structure according to the present embodiment.
- part of the first glass plate 10 , the light shielding portion 90 and the intermediate film 30 of the laminated glass 100 are omitted.
- the intermediate film 30 only the second intermediate film 32 is shown, omitting the first intermediate film 31 and the third intermediate film 33, which will be described later.
- the power supply member 50, the power supply line 51, and the power supply line 52 are strip-shaped, but may be linear. Also, although the grounding member 55 and the grounding wire 56 are belt-shaped, they may be linear.
- the second circuit has a dielectric in at least one place within the circuit.
- the dielectric may include, for example, the intermediate film 30 and the insulating member 53 .
- at least part of the dielectric may be composed of the intermediate film 30 , may be composed of the insulating member 53 , or may be composed of the intermediate film 30 and the insulating member 53 .
- the ESD shield 60 is not in direct contact with the feeder lines 51 and 52 of the feeder member 50 . Therefore, the second circuit has a dielectric disposed between the ESD shield 60 and the feed lines 51 and 52 .
- the static electricity is a high voltage of 2 kV or more, and flows into the ESD shield 60 from the power supply line 51 or 52 by dielectric breakdown. Therefore, static electricity is suppressed from flowing into the functional layer 40 .
- the ground member 55 has the ground wire 56 inside the insulating member, and the end (contact) on the side of the ESD shield 60 is not covered with the insulating member.
- the ground line 56 is connected in contact with the ESD shield 60 at the positive Y-axis direction end (contact point) by, for example, solder or an anisotropic conductive film (ACF).
- the power supply member 50 and the ground member 55 are arranged such that their extending directions are substantially parallel. However, portions of the power supply member 50 and the ground member 55 may not be substantially parallel. Further, in FIG. 1, the ground member 55 may be electrically connected to the ESD shield 60 via the vicinity of the side edge and/or the vicinity of the upper edge inside the laminated glass 100 .
- the distance between the power supply member 50 and the ground member 55 is not particularly limited, but may be, for example, 100 mm or less.
- the power supply member 50 and the ground member 55 may be adjacent or overlapping in plan view.
- the ground line 56 may be arranged between the feeder line 51 and the feeder line 52 .
- the ground line 56 may be integrated with the ESD shield 60 . Integral means continuous without contact points.
- the functional layer 40 may be arranged at any position on the XY plane and in any size.
- the directional distance is preferably greater than 0 mm, more preferably 5 mm or more, and even more preferably 10 mm or more.
- the XY plane direction from the peripheral edge of the first glass plate 10 to the peripheral edge of the functional layer 40 is required. is preferably 20 mm or more.
- FIG. 3 is a cross-sectional view of the laminated glass 100 taken along the XZ plane at the position of X 1 -X 2 in FIG. 1 and viewed from the negative Y-axis direction.
- the laminated glass 100 has a first glass plate 10, an intermediate film 30, and a second glass plate 20 laminated in this order.
- the 1st glass plate 10 has the 1st main surface 10a on the opposite side to the intermediate film 30, and the 2nd main surface 10b by the intermediate film 30 side.
- the second glass plate 20 has a third main surface 20c on the side of the intermediate film 30 and a fourth main surface 20d on the side opposite to the intermediate film 30 .
- the laminated glass 100 in one embodiment has, as the light shielding portions 90, a light shielding portion 91 on the second main surface 10b and a light shielding portion 92 on the fourth main surface 20d.
- the light shielding portion 90 does not need to be composed of the light shielding portion on the main surface of the glass plate, and may include a colored intermediate film or the like.
- the intermediate film 30 includes a first intermediate film 31 in contact with the first glass plate 10, a second intermediate film 32 in contact with the second glass plate 20, and a third intermediate film sandwiched between the first intermediate film 31 and the second intermediate film 32. 33.
- the intermediate film 30 may have intermediate films other than the first intermediate film 31 , the second intermediate film 32 and the third intermediate film 33 .
- the functional layer 40 is sandwiched between the first intermediate film 31 and the second intermediate film 32 .
- a peripheral edge of the functional layer 40 is in contact with the third intermediate film 33 . That is, in plan view of the laminated glass 100 , the inner edge shape of the third intermediate film 33 is substantially the same shape as the peripheral edge shape of the functional layer 40 . Then, the functional layer 40 is accommodated in the cut-out portion inside the outer edge of the third intermediate film 33 .
- the intermediate film 30 and the first glass plate 10 and the second glass plate 20 are easily brought into close contact with each other at the peripheral edge portion of the functional layer 40 . , gaps are less likely to occur in the peripheral portion.
- the inner edge shape of the third intermediate film 33 may be large enough to accommodate the functional layer 40 and the ESD shield 60 .
- the third intermediate film 33 is not essential and can be used as needed.
- the use of the third intermediate film 33 is suitable when the thickness of the functional layer 40 is 0.15 mm or more, and more suitable when the thickness is 0.18 m or more. In other words, for example, when the thickness of the functional layer 40 is less than 0.15 mm, the third intermediate film 33 may be omitted.
- the intermediate film 30 does not include the third intermediate film 33 , the peripheral edge of the functional layer 40 is in contact with at least one of the first intermediate film 31 and the second intermediate film 32 .
- FIG. 4 is a cross-sectional view of the laminated glass 100 taken along the YZ plane at the position Y 1 -Y 2 in FIG. 1 and viewed from the negative X-axis direction.
- the power supply line 51 of the power supply line 51 and the power supply line 52 will be described, but the power supply line 52 is the same.
- the end (contact) of the feeder line 51 is in contact with the functional layer 40 and not in contact with the ESD shield 60 . Since the driving voltage of the functional layer 40 is sufficiently lower than 2 kV, the driving current of the functional layer 40 flows from the power supply line 51 to the functional layer 40 without dielectric breakdown. On the other hand, since static electricity has a high voltage, when static electricity is generated in the power supply line 51 , dielectric breakdown occurs and current flows through the grounded ESD shield 60 .
- the minimum non-destructive voltage of the dielectric is preferably 0.5 kV/mm or more and 500 kV/mm or less. If it is 0.5 kV/mm or more, dielectric breakdown due to the drive current of the functional layer 40 is unlikely to occur, and 1 kV/mm or more is more preferable, 5 kV/mm or more is even more preferable, and 10 kV/mm or more is particularly preferable. If it is 500 kV/mm or less, dielectric breakdown due to static electricity can occur without performing a treatment for extremely thinning the dielectric thickness, 400 kV/mm or less is more preferable, and 200 kV/mm or less is even more preferable.
- the minimum non-breakdown voltage of the intermediate film 30 is smaller than the minimum non-breakdown voltage of the insulating member 53 .
- the minimum non-breakdown voltage is based on JIS C2110-3 "Solid electrical insulating materials - Test method for dielectric breakdown strength - Part 3: Test by impulsive voltage application", "Dielectric breakdown strength [kV/mm]" can be measured as
- the value obtained by multiplying the distance [mm] between the first end and the second end of the dielectric by the minimum non-breaking voltage [kV/mm] of the dielectric between the ESD shield 60 and the feeder line 51 is , is preferably 2 kV or less, more preferably 1 kV or less. If this value is 2 kV or less, dielectric breakdown is likely to occur even with relatively low-voltage static electricity, and the functional layer 40 is likely to be protected.
- the minimum value of this value is not particularly limited as long as it is higher than the driving voltage of the functional layer 40, and may be, for example, 0.2 kV, 0.4 kV, 0.6 kV, or 0.8 kV.
- the distance [mm] between the ESD shield 60 and the feeder line 51 may be the distance [mm] between the first end and the second end of the dielectric in the second circuit.
- the first end and the second end of the dielectric are the portions of the dielectric that contact the ESD shield 60 and the feed line 51, respectively.
- the ESD shield 60 since the ESD shield 60 has a smaller impedance (input impedance) than the functional layer 40 , static electricity can preferentially flow toward the ESD shield 60 side rather than the functional layer 40 .
- the impedance of the ESD shield 60 should be lower than the impedance of the functional layer 40 at a frequency of 1 MHz or higher (8 MHz, for example).
- a ground structure-equipped vehicle laminated glass 200 (hereinafter simply referred to as "laminated glass 200") according to a second embodiment of the present invention will be described below with reference to FIG.
- the laminated glass 200 according to the second embodiment will be described in particular about the differences from the laminated glass 100 according to the first embodiment, and the description of the laminated glass 100 will be used for the rest.
- the laminated glass 200 is characterized in that a dielectric is arranged between the ESD shield 61 and the ground member 55 in the second circuit.
- FIG. 5 is a perspective view illustrating the laminated glass 200 according to this embodiment.
- part of the first glass plate 10 , the light shielding portion 90 and the intermediate film 30 of the laminated glass 200 are omitted.
- the intermediate film 30 As for the intermediate film 30, only the second intermediate film 32 is shown, omitting the first intermediate film 31 and the third intermediate film 33, which will be described later.
- the scale of dimensions is changed for each component, and the curved shape is also shown as a plane shape.
- the ESD shield 61 is integrated with the power supply member 50 and separated from the ground member 55 . That is, the ESD shield 61 is continuous with the feeder lines 51 and 52 of the feeder member 50 and separated from the ground member 55 by the dielectric intermediate film 30 . It can be said that the power supply member 50 bends in the positive X-axis direction at the contact point with the functional layer 40 , and the portion extending in the positive X-axis direction from the contact point with the functional layer 40 functions as the ESD shield 61 . A portion of the power supply member 50 extending in the Y-axis direction and connected to the functional layer 40 constitutes a first circuit.
- the ESD shield 61 is covered with the insulating member 53 of the power supply member 50 in FIG. 5, it does not necessarily have to be covered.
- the dielectric separating the ESD shield 61 and the ground member 55 may be, for example, the insulating member of the insulating member 53 or the ground member 55 .
- the ground member 55 may be bent in the negative X-axis direction at its end in the positive Y-axis direction and extended to the vicinity of the ESD shield 61 .
- the width (the length in the X-axis direction) of the ESD shield 61 may be approximately the same as or smaller than the width of the power supply member 50 .
- the distance [mm] between the ESD shield 61 and the ground line 56 may be the distance [mm] between the first end and the second end of the dielectric in the second circuit.
- the form in which the dielectric is arranged at one place between the ESD shield 60 and the power supply member 50 and the form in which the dielectric is arranged at one place between the ESD shield 61 and the ground member 55 I explained the morphology.
- the invention is not limited to these, and dielectrics may be arranged at two or more locations in the second circuit.
- a dielectric may be placed between the ESD shield 61 and the feed member 50 and between the ESD shield 61 and the ground member 55 .
- the ESD shield 61 may consist of two or more parts with a dielectric disposed between them.
- FIGS. 1-5 are used to refer to each component. However, the reference numerals of the laminated glasses 100 and 200 are omitted.
- the first glass plate 10 and the second glass plate 20 may be flat, at least one of them may be curved, or both may be curved.
- Each of the first glass plate 10 and the second glass plate 20 may have a single curved shape (cylindrical) in which the curved direction is single, or may be a compound curved shape curved in two orthogonal directions.
- the radius of curvature of the first glass plate 10 is preferably substantially the same as the radius of curvature of the second glass plate 20 (including the case where both are flat) or larger than the radius of curvature of the second glass plate 20 . That is, the ratio of the minimum radius of curvature (r 2 ) of the second glass plate 20 to the minimum radius of curvature (r 1 ) of the first glass plate 10 is preferably 1 ⁇ r 1 /r 2 .
- r 1 and r 2 are preferably 500 mm or more, more preferably 700 mm or more, in order to reduce occurrence of wrinkles and perspective distortion in the intermediate film 30 .
- the maximum radius of curvature (R 1 ) of the first glass plate 10 and the maximum radius of curvature (R 2 ) of the second glass plate 20 are preferably 100000 mm or less, more preferably 50000 mm or less. It is preferably 30000 mm or less, more preferably 20000 mm or less.
- first glass plate 10 or the second glass plate 20 When a laminated glass having substantially the same r1 and r2 is attached to a vehicle, either the first glass plate 10 or the second glass plate 20 may be arranged on the vehicle interior side.
- the glass plate corresponding to the larger value of r 1 and r 2 is placed on the outside of the vehicle in order to maintain the strength of the laminated glass. is preferred.
- the first glass plate 10 when r 1 >r 2 , the first glass plate 10 may be arranged on the vehicle exterior side and the second glass plate 20 may be arranged on the vehicle interior side.
- first glass plate 10 and the second glass plate 20 conventionally known inorganic glass or organic glass used for vehicle window glass can be used.
- the composition of the first glass plate 10 and the composition of the second glass plate 20 may be the same or different.
- inorganic glass include ordinary soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass.
- the inorganic glass is bent by gravity molding, press molding, or the like, and the glass sheet is bent at a high temperature.
- the inorganic glass may be unstrengthened glass obtained by forming molten glass into a plate shape and slowly cooling it, and if necessary, may be subjected to strengthening treatment such as physical strengthening (for example, air cooling strengthening) or chemical strengthening. .
- organic glass examples include polycarbonate resins, acrylic resins, polystyrene resins, aromatic polyester resins, polyester resins, polyarylate resins, polycondensates of halogenated bisphenol A and ethylene glycol, acrylic urethane resins, and acrylic resins containing halogenated aryl groups. etc.
- Polycarbonate resin is preferable for the organic glass in that a lightweight and flexible sheet can be obtained. Two or more of the resins may be used in combination.
- the first glass plate 10 and the second glass plate 20 are preferably made of soda-lime glass or alkali-free glass among those exemplified above. Float glass is preferable for the first glass plate 10 and the second glass plate 20 .
- Both inorganic glass and organic glass are usually colorless, but they may be colored as long as they have transparency. In the case of color, it may be so-called privacy glass, which has a dark color such as gray. Privacy glass has the effect of reducing the transmission of sunlight from the outside to the inside of the vehicle and the effect of improving aesthetics from the inside and outside of the vehicle while making it difficult to see the inside of the vehicle from the outside. Privacy glass is preferably used for parts other than the windshield, particularly for the roof, rear side glass, rear glass, quarter glass, and the like. Moreover, the inorganic glass and the organic glass can contain an infrared shielding material, an ultraviolet shielding material, and the like.
- the thicknesses of the first glass plate 10 and the second glass plate 20 are appropriately selected according to the type and location of the vehicle on which the laminated glass is mounted, but generally each can be 0.1 mm to 10 mm. In order to keep the density per unit area (area density) determined by the mass and surface area of the laminated glass within a preferable range, the thickness of the first glass plate 10 and the second glass plate 20 should be 0.3 mm to 2.0 mm. 6 mm is preferred. The thicknesses of the two glass plates 10 and 20 may be the same or different.
- the two glass plates 10 and 20 have different thicknesses
- the difference between the thickness of the first glass plate 10 and the thickness of the second glass plate 20 is preferably 0.3 mm to 1.5 mm, and more preferably 0.3 mm to 1.3 mm is more preferred.
- the thickness of the glass plate located on the outside of the vehicle is preferably 1.1 mm or more, more preferably 1.3 mm or more, still more preferably 1.6 mm or more, and particularly preferably 1.8 mm or more. . Further, the thickness of the glass plate positioned on the vehicle outer side is preferably 2.6 mm or less, more preferably 2.1 mm or less.
- the thickness of the glass plate positioned inside the vehicle is preferably 0.3 mm or more, more preferably 0.5 mm or more, still more preferably 0.7 mm or more, and 1.1 mm or more. It is particularly preferable, and 1.6 mm or more is most preferable. Further, the thickness of the glass plate positioned inside the vehicle is preferably 2.6 mm or less, more preferably 2.1 mm or less.
- the two glass plates 10 and 20 have, on at least one of the surfaces exposed to the atmosphere (the first main surface 10a and the fourth main surface 20d), a coating film that imparts a water-repellent function, a hydrophilic function, an anti-fogging function, etc., is laminated.
- a coating film that imparts a water-repellent function, a hydrophilic function, an anti-fogging function, etc.
- the two glass plates 10 and 20 usually include a metal layer such as a low emissivity coating, an infrared ray shielding coating, a conductive coating, etc. on the surfaces facing each other (the second main surface 10b and the third main surface 20c).
- a coating film may be laminated.
- the intermediate film 30 contains, for example, a thermoplastic resin, a thermosetting resin, or a photocurable composition as a main component, and can be formed by solidifying these resins or compositions.
- "hardening” here includes hardening.
- the intermediate film 30 has various functions such as adhesion between members, shock absorption, and sound insulation to be described later. From the viewpoint of adhesiveness, at least two or more of the first intermediate film 31, the second intermediate film 32 and the third intermediate film 33 are preferably made of the same main component material, and all the intermediate films constituting the intermediate film 30 are preferably the same.
- the intermediate film 30 is provided with sound insulation properties by laminating layers having different glass transition points.
- the intermediate film 30 has a core layer having a glass transition point of less than 15° C., which is located in the middle position in the thickness direction, and this core layer (middle layer) is sandwiched.
- the two layers may be skin layers having a glass transition point of 15° C. or higher.
- the intermediate film 30 may have a structure in which a skin layer, a core layer, a skin layer, a core layer, and a skin layer are laminated in this order.
- at least one of the first intermediate film 31 and the second intermediate film 32 may have a three-layer laminated structure having sound insulation. In these cases, the laminated glass according to this embodiment also exhibits a sound insulation effect.
- Thermoplastic resins include polyvinyl acetal resin such as polyvinyl butyral resin (PVB), polyvinyl chloride resin (PVC), saturated polyester resin, polyurethane resin, ethylene-vinyl acetate copolymer resin (EVA), ethylene-ethyl acrylate copolymer systemic resins, cycloolefin polymers (COP), and the like.
- the thermoplastic resin used for the intermediate film 30 is preferably PVB, EVA, polyurethane resin, or the like. These thermoplastic resins may be used alone, or two or more of them may be used in combination.
- Thermosetting resins are typically silicone resins and acrylic resins.
- a photocurable composition typically contains a curable compound (A) having a curable group and a photopolymerization initiator (B).
- the photocurable composition may contain non-curable components other than the photopolymerization initiator (B), if necessary.
- Non-curable components include non-curable polymers (C), chain transfer agents (D), other additives, and the like.
- the curable compound (A) examples include acrylic, silicone, urethane acrylate, and epoxy compounds.
- the curable compound (A) is preferably silicone-based or urethane acrylate-based in that the storage elastic modulus G′ can be easily adjusted to 5 ⁇ 10 2 Pa to 1 ⁇ 10 7 Pa.
- the curable compound (A) is more preferably a urethane acrylate-based compound because it is easy to adjust the gel fraction to 1% to 50%.
- the intermediate film 30 contains an infrared absorber, an ultraviolet absorber, a colorant, a fluorescent agent, an adhesion modifier, a coupling agent, a surfactant, an antioxidant, a heat stabilizer, a light stabilizer, a dehydrating agent, and an antifoaming agent. , an antistatic agent, a flame retardant, and the like.
- a colored layer made of a coloring agent can be used as a so-called shade band layer that reduces the glare of vehicle occupants due to sunlight.
- the shade band layer may be provided in a strip shape along the upper edge thereof.
- the total thickness of the intermediate film 30 should be 0.3 mm to 3.15 mm from the viewpoint of ensuring ease of handling.
- the thickness of each of the first intermediate film 31, the second intermediate film 32, and the third intermediate film 33 is preferably 0.15 mm or more, more preferably 0.3 mm or more, in order to ensure penetration resistance.
- the thicknesses of the first intermediate film 31, the second intermediate film 32, and the third intermediate film 33 are each preferably 3 mm or less, more preferably 1.2 mm or less, and 0.8 mm or less, due to the weight limit of the laminated glass. Especially preferred.
- the thickness of each intermediate film may be the same or different.
- the functional layer 40 is a layer that is electrically driven by supplying power from a power supply through a power supply member.
- the electrically driven functional layer 40 may be a light control layer, a light emitting layer, an electric heating layer, or the like.
- the functional layer 40 it is sufficient that the electrically driven portion as a whole constitutes a plane.
- two or more functional layers 40 may be arranged.
- the two or more functional layers may be layers having the same function or layers having different functions.
- only one ESD shield 60 and ground member 55 may be arranged, or two or more of each may be arranged.
- the functional layer 40 may be driven by DC or AC, but the driving voltage is less than 2 kV. Therefore, the driving current flowing through the first circuit does not flow through the second circuit containing the dielectric in normal operation.
- the driving voltage of the functional layer 40 is usually 500 V or less, and is often operated at 200 V or less or 100 V or less, and current does not flow through the second circuit during normal operation of the functional layer 40 . Also, the driving voltage of the functional layer 40 may be, for example, 1 V or higher.
- the light control layer only needs to have the function of changing the visible light transmittance by electric driving, and may change the color.
- Examples of the light control layer include electrochromic (EC) films, liquid crystal (LC) films, suspended particle device (SPD) films, electrokinetic (EK) films, and the like.
- the driving voltage of the light control layer is about 50V to 200V.
- the light control layer can also be used as a shade band.
- the light-emitting layer may contain a material that emits light when electrically driven. mentioned.
- the light-emitting layer can also be used as a display for indicating directions and calling attention.
- the driving voltage of the light emitting layer is about 3V to 20V.
- the electric heating layer may contain anything that generates heat when electrically driven, and may contain at least one of metal, metal oxide, and conductive polymer.
- the electric heating layer may have any shape, and examples thereof include a thin film shape and a thin wire shape. Further, the electric heating layer may be specifically an electric heating film for defogging, an electric heating wire for melting ice, or the like. Direct current is often used for the electric heating layer, and the driving voltage of the electric heating layer is about 5V to 30V.
- the insulating member of the ground member 55 contains thermosetting resin or thermoplastic resin.
- insulating members include polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT); polyamide resins such as nylon 6, nylon 66, and nylon 610; polyimide; , polyimide resins such as polyetherimide, fluorine resins, polyether sulfone, polyether ketone, polyether sulfide, polyarylate, polyester ether, wholly aromatic polyamide, polyaramid, polypropylene (PP), polycarbonate (PC), liquid crystal Polymeric resins can be used.
- polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT); polyamide resins such as nylon 6, nylon 66, and nylon 610; polyimide; , polyimide resins such as polyetherimide, fluorine resins, poly
- a polyimide-based resin such as polyimide that can withstand the high-temperature and high-pressure conditions during the production of laminated glass can be suitably used for the insulating member.
- the resin used as the insulating member is not particularly limited as long as it is an insulating, flexible, and heat-resistant material.
- the shape of the ground member 55 is not particularly limited, it is, for example, strip-shaped or cylindrical. If the ground member 55 is band-shaped, it is easy to achieve both flexibility and adhesiveness.
- the thickness or diameter (hereinafter simply referred to as “thickness”) of the ground member 55 is, for example, 30 ⁇ m or more, preferably 50 ⁇ m or more. Also, the thickness of the ground member 55 is preferably 600 ⁇ m or less, more preferably 400 ⁇ m or less, still more preferably 300 ⁇ m or less, and particularly preferably 100 ⁇ m or less, in order to prevent gaps from forming around the ground member 55 .
- the material forming the ground wire 56 is, for example, metal such as gold, silver, copper, etc. Among these, copper is preferable.
- the shape of the ground wire 56 is not particularly limited, and may be band-like or cylindrical in accordance with the shape of the ground member 55 .
- the thickness of the ground line 56 is, for example, 10 ⁇ m or more, depending on the type of the functional layer 40 .
- the thickness of the ground wire 56 is preferably 15 ⁇ m or more, more preferably 30 ⁇ m or more, because it corresponds to the functional layer 40 used for laminated glass and is easy to handle.
- the thickness of the ground wire 56 is preferably 150 ⁇ m or less because the ground member 55 does not become excessively thick, more preferably 100 ⁇ m or less, and even more preferably 50 ⁇ m or less.
- insulating member 53 included in the power supply member 50 As a material for forming the insulating member 53 included in the power supply member 50, a resin used as an insulating member for the ground member 55 can be used.
- the insulating members of the insulating member 53 and the ground member 55 may be the same or different.
- the material forming the feeder lines 51 and 52 may be the same as or different from the material forming the ground line 56 . Also, the material forming the feeder line 51 and the feeder line 52 may be the same or different.
- the ESD shield 60 (61) is connected via the ground member 55 to a site with sufficiently low impedance such as the vehicle body. Also, the ESD shield 60 (61) may be connected to the signal ground of the ECU as a portion with low impedance. However, if the signal ground of the ECU is not the same as the potential of the vehicle body, the signal ground of the ECU has a higher impedance than the vehicle body, so it is preferable to ground the signal ground to the vehicle body.
- Materials constituting the ESD shield 60 (61) are, for example, metals such as gold, silver, copper, and aluminum, among which copper is preferred. Note that the metal may be oxidized by components such as a plasticizer contained in the intermediate film 30 and the electrical conductivity may be lowered. preferably not in contact. Moreover, in order to suppress oxidation by the components in the intermediate film 30, the ESD shield 60 (61) may be made of a carbon material or a composite material of metal and carbon.
- the ESD shield 60 (61) must have lower impedance (input impedance) than the functional layer 40. That is, the ratio of the impedance of the ESD shield 60 (61) to the impedance of the functional layer 40 at 25° C. and 8 MHz, for example, should be less than one. In order to effectively flow static electricity to the ESD shield 60 (61), this ratio is preferably 0.5 or less, more preferably 0.2 or less, even more preferably 0.1 or less, and even more preferably 0.05 or less. Preferably, 0.03 or less is particularly preferable. Although the lower limit of this ratio is not particularly limited, it may be set to 0.001, for example.
- the impedance of the ESD shield 60 (61) is preferably 100 k ⁇ or less at 25°C and 8 MHz, although it depends on the capacitance of the dielectric.
- the lower limit of the impedance of the ESD shield 60 (61) is not particularly limited, it is 4 ⁇ , for example.
- the dielectric constant of the dielectric disposed in the second circuit may be, for example, 2.0 to 8.0, preferably 2.5 to 5.0, and more preferably 3.0 to 4.0 at 25°C. more preferred. When the dielectric is composed of a plurality of materials, it is preferable that each material has a dielectric constant within the range of 2.0 to 8.0.
- the cross-sectional area of the ESD shield 60 (61) is preferably 0.003 mm 2 or more so that static electricity can flow effectively.
- the upper limit of the cross-sectional area of the ESD shield 60 (61) is not particularly limited.
- the laminated glass has the light shielding part 90
- the laminated glass has an opening that overlaps with the first glass plate 10 and does not have the light shielding part 90 in a plan view of the first glass plate 10, The visibility of the driver is ensured.
- the width of the light shielding portion 90 is not particularly limited, it is preferably 50 mm or less, more preferably 30 mm or less, and particularly preferably 20 mm or less from the edge of the first glass plate 10 in order to secure the area of the opening.
- the width of the light shielding portion 90 is preferably 5 mm or more from the peripheral edge of the laminated glass in order to effectively hide the contact points of each member.
- Organic ink, inorganic ceramics, colored intermediate films, and the like are examples of materials that constitute the light shielding portion 90 .
- the light shielding portion 90 can be formed by, for example, applying organic ink or inorganic ceramics onto a glass surface by screen printing or the like and drying the applied material.
- the color of the light shielding portion 90 may be any color as long as it can block visible light to an extent that it can be concealed at least in the portion where concealment is required. more preferred.
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Abstract
Description
以下、本発明の第1実施形態について、図1~図4を用いて説明する。各図面は、各構成要素を見やすくするため、構成要素ごとに寸法の縮尺を異ならせ、湾曲形状も平面形状として示す。
以下、本発明の第2実施形態にかかるアース構造付き車両用合わせガラス200(以下単に「合わせガラス200」)について、図5を用いて説明する。第2実施形態にかかる合わせガラス200は、とくに、第1実施形態にかかる合わせガラス100と異なる点について説明し、それ以外については、合わせガラス100における説明を援用する。合わせガラス200は、第2回路において、ESDシールド61とグランド部材55の間に誘電体が配置されていることが特徴である。
第1ガラス板10および第2ガラス板20は、平板状でもよく、少なくとも一方が湾曲してもよく、両方とも湾曲してもよい。第1ガラス板10および第2ガラス板20は、それぞれ、湾曲方向が単一である単曲形状(シリンドリカル)でもよく、直交する2方向に湾曲する複曲形状でもよい。
中間膜30は、合わせガラスに一般的に採用されているものを使用できる。中間膜30は、例えば、熱可塑性樹脂、熱硬化性樹脂、光硬化性組成物のいずれかを主成分として含有し、これらの樹脂や組成物を固化させて形成できる。なお、ここでいう「固化」は、硬化を含む。
機能層40は、給電部材によって電源から電力を供給して電気駆動する層である。電気駆動する機能層40は、調光層、発光層、電熱層等でもよい。機能層40は、電気駆動する部分が全体として平面を構成していればよい。一方で、例えば、第1ガラス板10と第2ガラス板20の間に配置される、赤外線遮光コーティング膜や紫外線により発光する樹脂フィルム等は、全体として平面を構成していても、それら単独では電気駆動しないため、機能層には含まない。
グランド部材55の絶縁部材は、熱硬化性樹脂または熱可塑性樹脂含む。絶縁部材としては、例えば、ポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)、ポリブチレンテレフタレート(PBT)等のポリエステル系樹脂、ナイロン6、ナイロン66、ナイロン610等のポリアミド系樹脂、ポリイミド、ポリアミドイミド、ポリエーテルイミド等のポリイミド系樹脂、フッ素系樹脂、ポリエーテルスルフォン、ポリエーテルケトン、ポリエーテルサルファイド、ポリアリレート、ポリエステルエーテル、全芳香族ポリアミド、ポリアラミド、ポリプロピレン(PP)、ポリカーボネート(PC)、液晶ポリマーの樹脂が使用できる。
給電部材50に含まれる絶縁部材53を構成する材料は、グランド部材55の絶縁部材として用いられる樹脂を使用できる。なお、絶縁部材53とグランド部材55の絶縁部材は同じでも異なってもよい。
ESDシールド60(61)は、グランド部材55を介して、車両のボディ等十分にインピーダンスが低い部位に接続される。また、ESDシールド60(61)は、インピーダンスが低い部位として、ECUの信号グランドに接続してもよい。しかし、ECUの信号グランドが、車両ボディの電位と同一ではない場合は、ECUの信号グランドは、車両ボディと比較してインピーダンスが高いため、車両のボディに接地する方が望ましい。ESDシールド60(61)を構成する材料は、例えば金、銀、銅、アルミニウム等の金属であり、これらの中では、銅が好ましい。なお、金属は、中間膜30に含まれる可塑剤等の成分により酸化され、導電性が低下することがあるため、ESDシールド60(61)は、被膜で覆われ、金属が中間膜30に直接接しないことが好ましい。また、中間膜30中の成分による酸化を抑制するため、ESDシールド60(61)は、炭素材料で構成されてもよく、金属と炭素の複合材料で構成されてもよい。
合わせガラスが遮光部90を有する場合、合わせガラスは、第1ガラス板10の平面視において、第1ガラス板10と重複し、かつ、遮光部90を有しない部分である開口部を有し、運転手の視界が確保されている。遮光部90の幅は特に限定されないが、開口部の面積を確保するため、第1ガラス板10の周縁から50mm以下が好ましく、30mm以下がより好ましく、20mm以下がとくに好ましい。また、遮光部90の幅は、各部材の接点を効果的に隠蔽するため、合わせガラスの周縁から5mm以上が好ましい。
なお、2021年3月29日に出願された日本国特願2021-056125号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
10 第1ガラス板
10a 第1主面
10b 第2主面
20 第2ガラス板
20c 第3主面
20d 第4主面
30 中間膜
31 第1中間膜
32 第2中間膜
33 第3中間膜
40 機能層
50 給電部材
51、52 給電線
53 絶縁部材
55 グランド部材
56 グランド線
60、61 ESDシールド
90、91、92 遮光部
G 重心
Claims (12)
- 第1ガラス板と、中間膜と、第2ガラス板と、がこの順に積層され、
前記中間膜は、電気駆動する機能層と、
前記機能層に電気的に接続された給電部材と、
前記給電部材および前記機能層が直列接続された第1回路と、
前記給電部材、可撓性のESDシールドおよびグランド部材を含んで直列接続された第2回路とを有し、
前記第2回路は、当該第2回路内の少なくとも1か所に誘電体を有し、
前記グランド部材は、接地されているアース構造付き車両用合わせガラス。 - 前記誘電体は、前記給電部材と前記ESDシールドの間に配置されている請求項1に記載のアース構造付き車両用合わせガラス。
- 前記誘電体は、前記ESDシールドと前記グランド部材の間に配置されている請求項1または2に記載のアース構造付き車両用合わせガラス。
- 前記給電部材は、第1給電線および第2給電線を有し、
前記第1給電線および前記第2給電線と、前記ESDシールドは、前記第1ガラス板の平面視で部分的に重複する請求項1~3のいずれか一項に記載のアース構造付き車両用合わせガラス。 - 前記誘電体は、少なくとも一部が前記中間膜を含む請求項1~4のいずれか一項に記載のアース構造付き車両用合わせガラス。
- 前記給電部材、前記ESDシールドおよび前記グランド部材の少なくとも1つは、絶縁部材を有し、
前記誘電体は、少なくとも一部が前記絶縁部材を含む請求項1~5のいずれか一項に記載のアース構造付き車両用合わせガラス。 - 前記誘電体の最小非破壊電圧は、0.5kV/mm以上500kV/mm以下である請求項1~6のいずれか一項に記載のアース構造付き車両用合わせガラス。
- 前記第2回路における、前記誘電体の第1端と第2端の距離[mm]に、前記誘電体の最小非破壊電圧[kV/mm]をかけた値が、2kV以下である請求項1~7のいずれか一項に記載のアース構造付き車両用合わせガラス。
- 前記誘電体の比誘電率は、2.0~8.0である請求項1~8のいずれか一項に記載のアース構造付き車両用合わせガラス。
- 前記ESDシールドは、前記機能層よりもインピーダンスが低い請求項1~9のいずれか一項に記載のアース構造付き車両用合わせガラス。
- 前記機能層のインピーダンスに対する前記ESDシールドのインピーダンスの比は、0.5以下である、請求項10に記載のアース構造付き車両用合わせガラス。
- 平面視で前記第1ガラス板の周縁に遮光部を有し、
前記ESDシールドは、前記遮光部と重複する、請求項1~11のいずれか一項に記載のアース構造付き車両用合わせガラス。
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DE112022001809.7T DE112022001809T5 (de) | 2021-03-29 | 2022-03-24 | Mit einer erdungsstruktur versehenes laminiertes glas für fahrzeuge |
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JP2013206979A (ja) * | 2012-03-27 | 2013-10-07 | Denso Corp | プリント基板 |
WO2014122704A1 (ja) * | 2013-02-05 | 2014-08-14 | 日本板硝子株式会社 | 合わせガラス |
JP2018513638A (ja) * | 2015-04-08 | 2018-05-24 | サン−ゴバン グラス フランスSaint−Gobain Glass France | 車両ウィンドウアンテナ板材 |
CN210573898U (zh) * | 2019-10-28 | 2020-05-19 | 福耀玻璃工业集团股份有限公司 | 电子标签和车辆玻璃 |
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JP2013206979A (ja) * | 2012-03-27 | 2013-10-07 | Denso Corp | プリント基板 |
WO2014122704A1 (ja) * | 2013-02-05 | 2014-08-14 | 日本板硝子株式会社 | 合わせガラス |
JP2018513638A (ja) * | 2015-04-08 | 2018-05-24 | サン−ゴバン グラス フランスSaint−Gobain Glass France | 車両ウィンドウアンテナ板材 |
CN210573898U (zh) * | 2019-10-28 | 2020-05-19 | 福耀玻璃工业集团股份有限公司 | 电子标签和车辆玻璃 |
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