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WO2025075026A1 - Film de commande de lumière, verre feuilleté et vitre pour véhicule - Google Patents

Film de commande de lumière, verre feuilleté et vitre pour véhicule Download PDF

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Publication number
WO2025075026A1
WO2025075026A1 PCT/JP2024/035208 JP2024035208W WO2025075026A1 WO 2025075026 A1 WO2025075026 A1 WO 2025075026A1 JP 2024035208 W JP2024035208 W JP 2024035208W WO 2025075026 A1 WO2025075026 A1 WO 2025075026A1
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WO
WIPO (PCT)
Prior art keywords
sub
protrusion
segment
light control
glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/035208
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English (en)
Japanese (ja)
Inventor
大地 岩澤
孝典 松島
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AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of WO2025075026A1 publication Critical patent/WO2025075026A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • 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
    • 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
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • 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
    • B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/19—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on variable-reflection or variable-refraction elements not provided for in groups G02F1/015 - G02F1/169

Definitions

  • the present invention relates to light control films, laminated glass, and vehicle window glass.
  • a light-control film is known that can switch glass used in vehicles, buildings, etc. between transparent and opaque by turning a switch on and off.
  • Patent Document 1 discloses a technology in which a transparent electrode is divided into strips and each divided transparent electrode is driven individually to adjust the size of the light control area.
  • the light control film is divided into strips, but the area of each divided light control region is large, and there is a possibility that the degree of light control cannot be properly controlled. For this reason, there is a demand for light control films that allow the degree of light control to be properly controlled.
  • the present invention was made in consideration of the above problems, and aims to provide a light control film, laminated glass, and vehicle window glass that can appropriately control the degree of light control.
  • the light control film of the present disclosure is a light control film having a first transparent electrode layer and a second transparent electrode layer to which a voltage is applied, and a light control layer provided between the first transparent electrode layer and the second transparent electrode layer, the light control film having a first segment, a second segment, and a sub-segment that are electrically non-connected to each other, the first segment having a first extension portion extending in a first direction perpendicular to the stacking direction of the first transparent electrode layer and the second transparent electrode layer, and a first protrusion portion protruding from the first extension portion in a second direction perpendicular to the stacking direction and the first direction, the second segment having a second extension portion located in the second direction further than the first extension portion and extending in the first direction, and a second protrusion portion protruding from the second extension portion in a third direction that is opposite to the second direction and is at a different position in the first direction from the first protrusion, the sub-segment having a plurality of sub
  • the laminated glass disclosed herein comprises a first glass plate, a second glass plate, and the light control film disposed between the first glass plate and the second glass plate.
  • the vehicle window glass disclosed herein comprises the laminated glass.
  • the present invention allows for proper lighting.
  • FIG. 1 is a schematic diagram of a laminated glass according to one embodiment.
  • the laminated glass 10 shown in FIG. 1 is a laminated glass for a vehicle.
  • the laminated glass 10 can be applied to vehicle window glass such as a roof glass, a rear glass, a rear side glass, a rear quarter glass, an extra glass, and a windshield for a vehicle.
  • the extra glass is a glass attached to the rear of a vehicle in order to improve the rear visibility of the driver of the vehicle.
  • the laminated glass 10 is used as a roof glass provided on the roof of a vehicle.
  • the vehicle here is typically an automobile, but refers to any moving body having glass, including a train, a ship, an aircraft, etc.
  • the application of the laminated glass 10 is not limited to vehicles.
  • planar shape here refers to the shape of a predetermined area of the laminated glass 10 viewed from the normal direction of the surface of the laminated glass 10 facing the vehicle interior side.
  • planar view refers to the predetermined area of the laminated glass 10 viewed in the direction Z (i.e., from the normal direction of the surface of the laminated glass 10 facing the vehicle interior side).
  • Fig. 2 is a schematic cross-sectional view of the laminated glass according to this embodiment.
  • Fig. 2 is a schematic cross-sectional view of the laminated glass 10 of Fig. 1 taken along line II-II.
  • the laminated glass 10 has a first glass plate 11, a second glass plate 12, an intermediate layer 13, and a light control film 15. If the direction from inside the vehicle to outside the vehicle is the Z direction, the laminated glass 10 is laminated in the Z direction in the following order: the shielding layer 14, the second glass plate 12, the intermediate layer 13, the light control film 15, the intermediate layer 13, the first glass plate 11, and the shielding layer 14. It can be said that the Z direction is also the stacking direction.
  • one direction perpendicular to the Z direction is the Y direction (first direction)
  • the direction toward one direction in the Y direction is the Y1 direction
  • the direction toward the other direction in the Y direction is the Y2 direction
  • the direction perpendicular to the Z direction and the Y direction is the X direction
  • the direction toward one direction in the X direction is the X1 direction (second direction)
  • the direction toward the other direction in the X direction (opposite to the X1 direction) is the X2 direction (third direction).
  • the Y direction is the front-rear direction of the vehicle
  • the X direction is the left-right direction of the vehicle.
  • the relationship between the X direction and the Y direction and the direction of the vehicle is not limited thereto and may be any.
  • the total thickness T0 of the laminated glass 10 is preferably 2.8 mm or more and 10 mm or less. If the total thickness T0 of the laminated glass 10 is 2.8 mm or more, sufficient rigidity can be ensured. Furthermore, if the total thickness of the laminated glass 10 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced. Note that the total thickness here and the thickness described below refer to the length in the Z direction.
  • the first glass plate 11 is an exterior glass plate that faces the outside of the vehicle when the laminated glass 10 is installed in the vehicle.
  • the second glass plate 12 is an interior glass plate that faces the inside of the vehicle when the laminated glass 10 is installed in the vehicle.
  • the first glass plate 11 and the second glass plate 12 may have a predetermined curvature.
  • the first glass plate 11 and the second glass plate 12 may be inorganic glass or organic glass.
  • the inorganic glass for example, soda lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, quartz glass, etc. are used without any particular limitation.
  • the first glass plate 11 located on the vehicle exterior side of the laminated glass 10 is preferably inorganic glass from the viewpoint of scratch resistance, and is preferably soda lime glass from the viewpoint of formability.
  • the first glass plate 11 and the second glass plate 12 are soda lime glass, clear glass, green glass containing a predetermined amount or more of iron components, and UV-cut green glass can be suitably used.
  • the inorganic glass may be either unreinforced glass or reinforced glass. Unreinforced glass is produced by forming molten glass into a plate shape and slowly cooling it.
  • Tempered glass is untempered glass with a compressive stress layer formed on the surface.
  • Tempered glass may be either physically tempered glass, such as air-cooled tempered glass, or chemically tempered glass.
  • the glass surface can be tempered by generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior by an operation other than gradual cooling, such as rapidly cooling a glass sheet that has been uniformly heated in bending forming from a temperature near its softening point.
  • the glass surface can be strengthened by generating compressive stress on the glass surface using an ion exchange method or the like.
  • Glass that absorbs ultraviolet or infrared rays may also be used, and although transparent glass is preferable, glass sheets that are colored to the extent that transparency is not impaired may also be used.
  • examples of materials for organic glass include polycarbonate, acrylic resins such as polymethyl methacrylate, polyvinyl chloride, polystyrene, and other transparent resins.
  • the shapes of the first glass plate 11 and the second glass plate 12 are not particularly limited to a rectangular shape, and may be processed into various shapes and curvatures. Gravity forming, press forming, roller forming, etc. are used for bending the first glass plate 11 and the second glass plate 12. There are also no particular limitations on the forming method for the first glass plate 11 and the second glass plate 12, but for example, in the case of inorganic glass, glass plates formed by a float method or the like are preferred.
  • the thickness T1 of the first glass sheet 11 is not particularly limited, but may generally be selected within the range of 0.1 mm to 10 mm, as appropriate, depending on the type and location of the vehicle to which the laminated glass 10 is applied.
  • the thickness T1 of the second glass sheet 12 is 0.3 mm or more, impact resistance is appropriately maintained and strength such as resistance to flying stones is sufficient; the thickness T1 is preferably 0.5 mm or more, more preferably 0.7 mm or more, particularly preferably 1.1 mm or more, and most preferably 1.6 mm or more.
  • the thickness T1 of the first glass sheet 11 being 3 mm or less is preferable in terms of fuel efficiency of the vehicle since the mass of the laminated glass 10 does not become too large.
  • the thickness T1 of the first glass sheet 11 is more preferably 2.6 mm or less, and particularly preferably 2.1 mm or less. Note that the thickness T1 here is preferably the thickness of the thinnest portion of the first glass sheet 11.
  • the first glass plate 11 preferably has sufficient impact resistance for use in a vehicle.
  • the impact resistance here can be evaluated, for example, using an impact resistance test in UN Regulation No. 43 (UN R43).
  • the impact resistance test is a test to check whether or not safety glass, such as laminated glass for automobiles, has the necessary adhesion or strength to withstand the impact of a small, hard flying object. Specifically, the test is performed by holding the laminated glass (safety glass) at a specified temperature, placing it on a support frame with the glass side facing up that is located outside the vehicle, and allowing a steel ball to drop naturally from a specified height.
  • the second glass plate 12 may have a different composition from the first glass plate 11 and/or a different thickness from the first glass plate 11.
  • the second glass plate 12 may be thinner than the first glass plate 11.
  • the second glass plate 12 be chemically strengthened glass.
  • a coating having water repellency and ultraviolet and infrared ray blocking properties, a coating having low reflection properties, low radiation properties and antifouling properties, or a coating having condensation prevention properties may be provided on the outer surface of at least one of the first glass sheet 11 and the second glass sheet 12. Furthermore, a coating having ultraviolet and infrared ray blocking properties, low radiation properties, visible light absorption properties, coloring properties, etc. may be provided on the surface of at least one of the first glass sheet 11 and the second glass sheet 12 that contacts the intermediate layer 13. Furthermore, a low-emissivity (Low-E) coating may be formed on the surface of the second glass sheet 12 facing the vehicle interior.
  • Low-E low-emissivity
  • At least one of the first glass plate 11 and the second glass plate 12 may have one or more of a water-repellent layer, an ultraviolet blocking layer, an infrared reflective layer, a low reflectance layer, a low emissivity layer, a dew condensation prevention layer, a visible light absorbing layer, and a colored layer.
  • At least one of the first glass plate 11 and the second glass plate 12, the intermediate layer 13, the electrode layer 17, and the substrate 16 of the light control film 15 described later may have these layers.
  • the first glass sheet 11 and the second glass sheet 12 may be flat or curved.
  • the first glass sheet 11 and the second glass sheet 12 are curved inorganic glass, the first glass sheet 11 and the second glass sheet 12 are bent after being formed by the float method and before being bonded by the intermediate layer 13.
  • the bending is performed by softening the glass by heating.
  • the heating temperature of the glass during bending is approximately 550°C or higher and 700°C or lower.
  • the laminated glass 10 is a laminated glass having two glass plates, a first glass plate 11 and a second glass plate 12, but the number of glass plates is not limited to this and may be three or more.
  • the intermediate layer 13 is a film provided between the first glass plate 11 and the second glass plate 12.
  • the intermediate layer 13 can also be said to be a film that bonds the first glass plate 11 and the second glass plate 12.
  • the intermediate layer 13 has, for example, a first intermediate layer 131 that bonds with the first glass plate 11 and a second intermediate layer 132 that bonds with the second glass plate 12.
  • the intermediate layer 13 sandwiches the light control film 15.
  • the first intermediate layer 131 can also be said to be a film located between the first glass plate 11 and the light control film
  • the second intermediate layer 132 can also be said to be a film located between the second glass plate 12 and the light control film 15.
  • thermoplastic resins are often used, such as plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, plasticized polyurethane resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, ionomer resins, and other thermoplastic resins that have traditionally been used in this manner.
  • plasticized polyvinyl acetal resins plasticized polyvinyl chloride resins
  • saturated polyester resins plasticized saturated polyester resins
  • polyurethane resins plasticized polyurethane resins
  • ethylene-vinyl acetate copolymer resins ethylene-ethyl acrylate copolymer resins
  • cycloolefin polymer resins ionomer resins
  • ionomer resins ionomer resins
  • plasticized polyvinyl acetal resin means that the resin is plasticized by adding a plasticizer. The same applies to other plasticized resins.
  • the shielding layer 14 is provided on the peripheral portion of the surface of the first glass plate 11 facing the outside of the vehicle and on the peripheral portion of the surface of the second glass plate 12 facing the inside of the vehicle.
  • the position where the shielding layer 14 is provided may be arbitrary, and the shielding layer 14 may be provided on the surface of the first glass plate 11 facing the inside of the vehicle, the surface of the second glass plate 12 facing the outside of the vehicle, or on the peripheral portion of the light control film 15.
  • the region through which light passes when viewed from the inside of the vehicle cabin toward the outside of the vehicle cabin (viewed from the Z direction) is defined as the opening region 14A.
  • the opening region 14A is a region that does not overlap with the shielding layer 14.
  • the shielding layer 14 is provided on the peripheral portion of the laminated glass 10, and therefore, the region of the entire laminated glass 10 that is surrounded by the shielding layer 14 is the opening region 14A.
  • FIG. 3 is a schematic cross-sectional view of the light control film according to this embodiment.
  • the light control film 15 is a film capable of switching the light transmittance.
  • the light control film 15 is preferably disposed over almost the entire laminated glass 10.
  • the planar shape of the light control film 15 is, for example, a rectangle smaller than the planar shape of the laminated glass 10. However, the planar shape of the light control film 15 does not have to be rectangular.
  • the peripheral portion of the light control film 15 is located in a position overlapping with the shielding layer 14 in a planar view.
  • the light control film 15 is provided on the laminated glass 10, but the present invention is not limited to this and may be used for any purpose.
  • the light control film 15 has a first transparent substrate 16A, a first transparent electrode layer 17A, a light control layer 18, a second transparent electrode layer 17B, and a second transparent substrate 16B, and is provided between a first intermediate layer 131 and a second intermediate layer 132 that constitute the intermediate layer 13.
  • the light control film 15 is laminated in the Z direction in the order of the second transparent substrate 16B, the second transparent electrode layer 17B, the light control layer 18, the first transparent electrode layer 17A, and the first transparent substrate 16A.
  • first transparent substrate 16A and the second transparent substrate 16B when there is no need to distinguish between the first transparent substrate 16A and the second transparent substrate 16B, they will be referred to as substrate 16, and when there is no need to distinguish between the first transparent electrode layer 17A and the second transparent electrode layer 17B, they will be referred to as electrode layer 17.
  • the light control film 15 has an electrode 30 connected thereto.
  • the thickness T4 of the light-adjusting film 15 is, for example, 0.05 mm or more and 1.0 mm or less, and preferably 0.1 mm or more and 0.8 mm or less.
  • Wiring 31, 32 for connecting the electrode 30 to the control unit 33 is connected to the electrode 30 connected to the light-adjusting film 15.
  • the first transparent substrate 16A and the second transparent substrate 16B are a pair of substrates that support the first transparent electrode layer 17A and the second transparent electrode layer 17B and sandwich the light-adjusting layer 18.
  • the first transparent substrate 16A is located in the Z direction from the light-adjusting layer 18, and the second transparent substrate 16B is located in the opposite direction to the Z direction from the light-adjusting layer 18.
  • the substrate 16 is preferably a transparent resin layer.
  • the substrate 16 preferably contains one or more selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyamide, polyether, polysulfone polyethersulfone, polycarbonate, polystyrene, cyclic polyolefin, polyarylate, polyetherimide, polyetheretherketone, polyimide, aramid, polybutylene terephthalate, triacetyl cellulose, polyurethane, and cycloolefin polymer.
  • first transparent substrate 16A and the second transparent substrate 16B are made of the same material as shown above, but are not limited to this and may be made of different materials.
  • the thickness T5 of the substrate 16 is, for example, 5 ⁇ m to 500 ⁇ m, preferably 10 ⁇ m to 200 ⁇ m, and more preferably 50 ⁇ m to 150 ⁇ m.
  • the thickness T5 is 5 ⁇ m, a decrease in the impact resistance of the laminated glass 10 is suitably suppressed, and when the thickness T5 is 500 ⁇ m or less, the mass of the laminated glass 10 is not too large.
  • the first transparent base material 16A and the second transparent base material 16B have the same thickness T5, but may have different thicknesses.
  • the peripheral portion of the substrate 16 is preferably located at the same position in the X direction and Y direction relative to the peripheral portions of the first glass plate 11 and the second glass plate 12.
  • the end portion (side surface) of the substrate 16 is preferably located at the same position in the X direction and Y direction relative to the end portion (side surface) of the first glass plate 11 and the end portion (side surface) of the second glass plate 12 around the entire circumference.
  • this does not apply to the portion of the peripheral portion of the substrate 16 to which the wiring 31, 32 is connected.
  • the first transparent electrode layer 17A is formed on the surface of the first transparent substrate 16A opposite to the Z direction and is in contact with the surface of the light control layer 18 in the Z direction.
  • the second transparent electrode layer 17B is formed on the surface of the second transparent substrate 16B in the Z direction and is in contact with the surface of the light control layer 18 opposite to the Z direction. That is, the first transparent electrode layer 17A and the second transparent electrode layer 17B are a pair of electrode layers sandwiching the light control layer 18.
  • the first transparent electrode layer 17A and the second transparent electrode layer 17B are connected to the control unit 33, and a voltage is applied from the control unit 33.
  • the first transparent electrode layer 17A and the second transparent electrode layer 17B are formed over the entire surfaces of the first transparent substrate 16A and the second transparent substrate 16B, respectively.
  • the electrode layer 17 may be, for example, a transparent conductive oxide (TCO).
  • TCOs include, but are not limited to, tin-doped indium oxide (ITO), aluminum-doped zinc oxide (AZO), and indium-doped cadmium oxide.
  • Transparent conductive polymers such as poly(3,4-ethylenedioxythiophene) (PEDOT) or poly(4,4-dioctylcyclopentadithiophene) can also be suitably used as the electrode layer 17.
  • PEDOT poly(3,4-ethylenedioxythiophene)
  • poly(4,4-dioctylcyclopentadithiophene) can also be suitably used as the electrode layer 17.
  • a laminated film of a metal phase and a dielectric layer, silver nanowires, a metal mesh of silver or copper, etc. can also be suitably used as the electrode layer 17.
  • the electrode layer 17 can be formed, for example, by a physical vapor deposition (PVD) method such as a sputtering method, a vacuum deposition method, or an ion plating method.
  • PVD physical vapor deposition
  • the electrode layer 17 may also be formed by a chemical vapor deposition method or a wet coating method.
  • the light control film 15 has a first segment 20, a second segment 23, and a sub-segment 26 that are not electrically connected to each other.
  • the electrode layer 17 is divided into the first segment 20, the second segment 23, and the sub-segment 26. That is, the first segment 20, the second segment 23, and the sub-segment 26 are a part of the entire area of the electrode layer 17, and are not electrically connected to each other. Therefore, the first segment 20, the second segment 23, and the sub-segment 26 can be driven independently of each other.
  • the first transparent electrode layer 17A has a first segment 20, a second segment 23, and a sub-segment 26.
  • the second transparent electrode layer 17B is not divided into the first segment 20, the second segment 23, and the sub-segment 26, in other words, it is a common electrode that does not have any electrically unconnected region over its entire area.
  • the first transparent electrode layer 17A may be a common electrode and the second transparent electrode layer 17B may be divided into each segment, or both the first transparent electrode layer 17A and the second transparent electrode layer 17B may be divided into each segment. That is, at least one of the first transparent electrode layer 17A and the second transparent electrode layer 17B may have a first segment 20, a second segment 23, and a sub-segment 26.
  • each segment may be arbitrary, but for example, each segment may be formed by dividing the electrode layer 17 with an insulating section. In other words, each segment may be electrically disconnected by being adjacent to each other through the insulating section.
  • the first transparent electrode layer 17A is divided by the insulating section 17A1 to form the first segment 20, the second segment 23, and the sub-segment 26.
  • the insulating section 17A1 is an insulating member (insulating pattern) that divides the first transparent electrode layer 17A.
  • the insulating section 17A1 can be formed by partially removing the transparent electrode, for example, with a cutter or laser.
  • the shape of the insulating section 17A1 is determined according to the shape of the segment, and is not limited to a straight line, but may also be a curved line.
  • a partition member made of, for example, resin may be provided at a position corresponding to the insulating section 17A1 to divide not only the transparent electrode layer but also the light control layer described later into segments.
  • the first segment 20 has a first extending portion 21 and a first protruding portion 22.
  • the first segment 20 has at least one first protruding portion 22.
  • the first segment 20 has a plurality of first protruding portions 22.
  • the first extension portion 21 extends in the Y1 direction (first direction).
  • the first extension portion 21 is rectangular when viewed from the direction from the inside of the vehicle cabin toward the outside of the vehicle cabin (when viewed from the Z direction), but is not limited to being rectangular in a plan view and may be any shape.
  • the first extension portion 21 is positioned so as to overlap the shielding layer 14 in a plan view. In other words, the first extension portion 21 does not overlap the opening region 14A.
  • the first protruding portion 22 protrudes in the X1 direction (a second direction perpendicular to the first direction) from the first extending portion 21.
  • a tip end portion (an end portion in the X1 direction) of the first protruding portion 22 is located further in the X2 direction than a second extending portion 24 described later.
  • the first protrusion 22 is rectangular in plan view, but is not limited to being rectangular in plan view and may be any shape. In plan view, at least a portion of the first protrusion 22 overlaps the opening region 14A (does not overlap the shielding layer 14). As shown in Fig.
  • the width (thickness) of the first protrusion 22 in the Y direction is preferably wider (thicker) than the width (thickness) of the sub-protrusion 29 in the Y direction, which will be described later.
  • the number of first protrusions 22 may be any number, but in this embodiment, a plurality of first protrusions 22 are provided. Each first protrusion 22 protrudes in the X1 direction from a different position in the Y direction of the first extension portion 21. That is, the first protrusions 22 are lined up in the Y direction.
  • the lengths of each first protrusion 22 in the X direction may be the same or different.
  • the first protrusions 22 may include first protrusions 22 of the same length and first protrusions 22 of different lengths. Note that the term "same length" does not necessarily mean that the lengths are exactly the same, and may be the same length if the difference in length is up to about 20%.
  • first protrusions 22 in the Y direction may be the same or different.
  • widths of the multiple first protrusions 22 in the first direction may be arbitrarily combined.
  • the first protrusions 22 may include first protrusions 22 of the same width and first protrusions 22 of different widths in the first direction.
  • two of the first protrusions 22 may have the same width and the other two may have different widths.
  • first protrusions 22 By providing a plurality of first protrusions 22 in this way, when light is transmitted through the first protrusions 22 (first segments 20), the light can be uniformly collected.
  • the aperture ratio of the first protrusions 22 can be adjusted, which also leads to adjusting the amount of light taken in.
  • the second segment 23 has a second extending portion 24 and a second protruding portion 25.
  • the second segment 23 has at least one second protruding portion 25.
  • the second segment 23 has a plurality of second protruding portions 25.
  • the second protrusion 25 protrudes from the second extending portion 24 in the X2 direction (a third direction that is the opposite direction to the second direction).
  • the second protrusion 25 is provided at a position different from the first protrusion 22 in the Y direction. That is, the first protrusion 22 and the second protrusion 25 are alternately arranged side by side in the Y direction.
  • the tip end of the second protrusion 25 (the end in the X2 direction) is located further in the X1 direction than the first extending portion 21.
  • the second protrusion 25 is rectangular in plan view, but is not limited to being rectangular in plan view and may be any shape.
  • the second protrusion 25 overlaps the opening region 14A (does not overlap the shielding layer 14).
  • the width of the second protrusion 25 in the Y direction is preferably wider than the width of the sub-protrusion 29 in the Y direction, and may be the same width as or different from the width of the first protrusion 22 in the Y direction. In this embodiment, the width of the second protrusion 25 in the Y direction is wider than the width of the first protrusion 22 in the Y direction.
  • the number of second protrusions 25 may be any number, but in this embodiment, a plurality of second protrusions 25 are provided. Each second protrusion 25 protrudes in the X2 direction from a different position in the Y direction of the second extension portion 24. That is, the second protrusions 25 are lined up in the Y direction.
  • the lengths of each second protrusion 25 in the X direction may be the same or different.
  • the second protrusion 25 may include first protrusions 22 of the same length and second protrusions 25 of different lengths.
  • the width of each second protrusion 25 in the Y direction may be the same or different.
  • the widths of the plurality of second protrusions 25 in the first direction may be arbitrarily combined.
  • the second protrusion 25 may include a second protrusion 25 of the same width in the first direction and a second protrusion 25 of a different width. More specifically, for example, when there are four second protrusions 25, two of the second protrusions 25 may have the same width and the other two may have different widths.
  • the second protrusions 25 By providing a plurality of second protrusions 25 in this way, when light is transmitted through the second protrusions 25 (second segments 23), the light can be uniformly collected.
  • the aperture ratio of the second protrusions 25 can be adjusted, which also leads to adjusting the amount of light taken in.
  • FIG. 5 is a schematic diagram showing a modified example of the laminated glass according to this embodiment.
  • the first protrusion 22 and the second protrusion 25 are trapezoidal.
  • the first protrusion 22 and the second protrusion 25 are not limited to a trapezoidal shape and may be triangular. In this way, it is possible to improve the design.
  • the corners of the first protrusion 22 and the second protrusion 25 may be rounded.
  • the tips of the first protrusion 22 and the second protrusion 25 may be semicircular.
  • the sub-segment 26 includes a plurality of sub-projections 29. At least one of the first projecting portion 22 and the second projecting portion 25 is present between the respective sub-projections 29. More specifically, it is preferable that only one of the first projecting portion 22 and the second projecting portion 25 is present between the respective sub-projections 29. That is, for example, at least one of the first projecting portion 22 and the second projecting portion 25 (preferably either one) is provided between one sub-projection 29 and a sub-projection 29 adjacent to that sub-projection 29 in the Y direction.
  • the sub-segment 26 has a plurality of sub-projections 29 and a sub-extension portion that connects the sub-projections 29 together.
  • the sub-segment 26 has a first sub-extension portion 27 and a second sub-extension portion 28 as the sub-extension portion.
  • the first sub-extension portion 27 extends in the Y direction and connects one ends of the plurality of sub-projections 29 aligned in the Y direction
  • the second sub-extension portion 28 connects the other ends of the plurality of sub-projections 29 aligned in the Y direction.
  • the first sub-extension portion 27 is located between the first extension portion 21 and the second protrusion portion 25 in the X direction.
  • the first sub-extension portion 27 is a rectangular region in a plan view, but is not limited to being rectangular in a plan view and may be any shape.
  • the first sub-extension portion 27 is provided at a position overlapping the shielding layer 14.
  • the first sub-extension portion 27 may be located so that its entirety overlaps the shielding layer 14.
  • the second sub-extension portion 28 is located further in the X1 direction than the first sub-extension portion 27. In this embodiment, the second sub-extension portion 28 is located between the second extension portion 24 and the first protrusion portion 22 in the X direction.
  • the second sub-extension portion 28 is a rectangular region in a plan view, but is not limited to being rectangular in a plan view and may be any shape.
  • the second sub-extension portion 28 is provided at a position overlapping the shielding layer 14. The second sub-extension portion 28 may be located so that its entirety overlaps the shielding layer 14.
  • the sub-projection 29 projects in the X1 direction from the first sub-extension 27 and is connected to the second sub-extension 28. That is, the sub-projection 29 extends in the X1 direction from the end in the X2 direction connected to the first sub-extension 27 to the end in the X1 direction connected to the second sub-extension 28.
  • at least a portion of the secondary protrusion 29 overlaps with the opening region 14A (does not overlap with the shielding layer 14).
  • the secondary protrusion 29 may have an end in the X2 direction and an end in the X1 direction overlap with the shielding layer 14, and a portion between the end in the X1 direction and the end in the X2 direction overlap with the opening region 14A.
  • the multiple sub-projections 29 are aligned at different positions in the Y direction. That is, each sub-projection 29 projects in the X direction from a different position in the Y direction of the first sub-extension 27 (second sub-extension 28). Between the multiple sub-projections 29, there is a first projecting portion 22 or a second projecting portion 25. That is, between the sub-projections 29 aligned in the Y direction, one of the multiple first projecting portions 22 and the multiple second projecting portions 25 is provided.
  • the width of the secondary protrusion 29 in a plan view is preferably narrower (thinner) than the widths of the first protrusion 22 and the second protrusion 25 in the first direction.
  • the number of secondary protrusions 29 is preferably 1 to 50.
  • the width of the secondary protrusion 29 in the first direction is preferably, for example, 2 cm or more at minimum per secondary protrusion 29.
  • the width can be increased by setting the number of sub-projections 29 to 2 to 30.
  • the width of the sub-projection 29 in the first direction is about 3.3 cm, but is not limited to this width, and the number is not limited to 30.
  • the widths of the sub-projections 29 in the first direction may be the same or different from each other.
  • the sub-projections 29 may include sub-projections 29 of the same width and sub-projections 29 of different widths in the first direction.
  • first segment 20, the second segment 23, and the sub-segment 26 are gathered at a location overlapping with the shielding layer 14 so that the electrode 30 is concentrated in one place. In this embodiment, they are gathered on the edge of the laminated glass 10 in the Y2 direction in a plan view.
  • the light control layer 18 is a layer capable of changing the amount of light transmission.
  • the light control layer 18 is located between the first transparent substrate 16A on which the first transparent electrode layer 17A is formed and the second transparent substrate 16B on which the second transparent electrode layer 17B is formed. In other words, the light control layer 18 is located between the first transparent electrode layer 17A and the second transparent electrode layer 17B.
  • the light control layer 18 may include a sealant that seals the side surface of the light control layer 18 (not shown).
  • the light-adjusting layer 18 may be, for example, one or more selected from the group consisting of a suspended particle device (SPD), a guest-host liquid crystal (GHLC), an electrochromic (EC), a polymer dispersed liquid crystal (PDLC), and a polymer network liquid crystal (PNLC).
  • SPD suspended particle device
  • GHLC guest-host liquid crystal
  • EC electrochromic
  • PDLC polymer dispersed liquid crystal
  • PNLC polymer network liquid crystal
  • the light control film 15 has a first transparent substrate 16A on which a first transparent electrode layer 17A is formed, and a second transparent substrate 16B on which a second transparent electrode layer 17B is formed, which are arranged opposite each other, and a light control layer 18 consisting of one or more selected from the group consisting of a suspended particle device, a guest-host liquid crystal, a polymer-dispersed liquid crystal, and a polymer network liquid crystal, which is arranged between the opposing first transparent electrode layer 17A and second transparent electrode layer 17B.
  • a typical SPD film can be used as a suspended particle device, which is constructed by sandwiching a polymer layer containing suspended particles that can be oriented by the application of a voltage between two substrates coated with an electrode layer in the Y direction.
  • the suspended particles in the polymer layer become oriented, resulting in a state of high visible light transmittance and high transparency.
  • the power switch turned off, the suspended particles in the polymer layer do not become oriented, resulting in a state of low visible light transmittance and low transparency.
  • the SPD film for example, a commercially available product such as LCF-1103DHA (product name, manufactured by Hitachi Chemical Co., Ltd.) can be used. Note that such commercially available products are supplied in a specified size, and can be cut to the desired size before use. Note that there is no particular restriction on the thickness of the SPD film, but from the viewpoint of ease of handling and availability, it is preferable that it be 0.1 mm or more and 0.4 mm or less.
  • the electrodes 30 are connected to the electrode layer 17 and apply a voltage from an external device to the electrode layer 17.
  • the electrodes 30 are located at the bottom of the laminated glass 10, but the position of the electrodes 30 is not limited thereto and may be any position, and for example, the electrodes 30 may be located so as to be concentrated at the top when viewed in a plan view.
  • the electrode 30 is disposed, for example, at a position overlapping the shielding layer 14 in a plan view. As shown in FIG. 3, the electrode 30 is electrically connected to the first transparent electrode layer 17A and the second transparent electrode layer 17B. The electrode 30 passes current through the first transparent electrode layer 17A and the second transparent electrode layer 17B to drive the dimming layer 18.
  • One pole of the electrode 30 is, for example, a positive pole, and is connected to the positive side of a power source such as a battery mounted on the vehicle via a wiring 31 electrically connected to the one pole of the electrode 30.
  • the other pole of the electrode 30 is, for example, a negative pole, and is connected to the negative side of a power source such as a battery mounted on the vehicle via a wiring 32 electrically connected to the other pole of the electrode 30.
  • the wiring 31, 32 may be formed integrally with the electrode 30.
  • the transmittance of the light-adjusting layer 18 changes depending on the voltage.
  • the material of the electrode 30 is not particularly limited as long as it is a conductive material, but examples include metal materials.
  • metal materials include gold, silver, copper, aluminum, tungsten, platinum, palladium, nickel, cobalt, titanium, iridium, zinc, magnesium, and tin. These metals may also be plated, or may be made into an alloy or a composite with resin.
  • the electrode 30 may be used for the electrode 30.
  • the copper ribbon or flat-braided copper wire may be plated with a metal other than copper.
  • the electrode 30 may be formed integrally with the wiring 31, 32.
  • the electrode 30 can be joined to the electrode layer 17 by either a conductive adhesive (conductive adhesive layer), an anisotropic conductive film, or solder.
  • the electrode 30 may also be in direct contact with the electrode layer 17 without the conductive adhesive, anisotropic conductive film, or solder.
  • the electrode 30 may be formed by a printing method such as screen printing, inkjet printing, offset printing, flexographic printing, or gravure printing.
  • the electrode 30 has a length and shape necessary and sufficient for passing a current through the light control layer 18.
  • the shape of the electrode 30 is not particularly limited, but is generally substantially rectangular. Since the electrode 30 needs to be hidden by the shielding layer 14, it is disposed, for example, at a position where each segment is assembled, substantially parallel to the peripheral portions of the first glass plate 11 and the second glass plate.
  • the number of electrodes 30 arranged on the first transparent electrode layer 17A is the same as the number of segments. In this embodiment, since there are three segments, the first segment 20, the second segment 23, and the sub-segment 26, the number of electrodes 30 is also three.
  • the second transparent electrode layer 17B is a common electrode (there is no unconnected area), one electrode 30 is arranged on the second transparent electrode layer 17B.
  • each segment is electrically independent from each other, the number of electrodes 30 arranged on the partitioned first transparent electrode layer 17A can be reduced.
  • concealment by the shielding layer 14 becomes easier, improving the design.
  • the electrode 30 is preferably arranged at least 5 mm away from the peripheral portion (end portion) of the first glass plate 11 and the second glass plate 12 in the Y1 direction, and more preferably at least 8 mm away from the peripheral portion (end portion) of the first glass plate 11 and the second glass plate 12 in the Y1 direction. This arrangement reduces the risk of moisture penetrating from the peripheral portion of the first glass plate 11 and the second glass plate 12, causing corrosion of the electrode 30 or a short circuit between different potentials.
  • the length of the electrode 30 there are no particular limitations on the length of the electrode 30, but it is preferable that it be 5 mm or longer in order to ensure sufficient electrical conductivity and improve workability.
  • the thickness of the electrode 30 is preferably 0.05 mm to 0.4 mm. By making the thickness of the electrode 30 0.05 mm or more, sufficient strength can be obtained, and the occurrence of defects such as disconnection can be suppressed. Furthermore, by making the thickness of the electrode 30 0.4 mm or less, the thickness deviation between the electrode 30 and other parts is reduced. This makes it possible to suppress the stress generated in the first glass plate 11 and the second glass plate 12, and reduces the risk of the first glass plate 11 and the second glass plate 12 cracking.
  • each of the wires 31 and 32 is connected to the electrode 30, and the other end is connected to the control unit 33. That is, the wires 31 and 32 extend from the control unit 33, and the electrodes 30 at the ends of the wires 31 and 32 are connected to the electrode layer 17.
  • One wire 32 extends from the control unit 33 toward the second transparent electrode layer 17B. This makes it possible to control the dimming independently for each segment.
  • the control unit 33 controls the current and voltage.
  • the control unit 33 also supplies electricity to the laminated glass 10.
  • the control unit 33 may include, for example, a control device that controls the current and voltage, a power switch, an operation button, a vehicle battery, etc.
  • the control unit 33 is connected to the electrode layer 17.
  • the control unit 33 applies a voltage to the electrode layer 17 to drive the light control layer 18 and control the light.
  • the control unit 33 applies a constant voltage to the first transparent electrode layer 17A or applies different voltages to each segment.
  • the control unit 33 applies a constant voltage to each segment. This allows the laminated glass 10 (light control film 15) to transmit light at a constant rate. In other words, a constant brightness can be obtained within the opening area 14A.
  • the control unit 33 adjusts the brightness of the desired segment. Specifically, when the control unit 33 wants to adjust the brightness of the first segment 20 (first protrusion 22) and the second segment 23 (second protrusion 25), it adjusts the brightness of these two segments.
  • the control unit 33 may also apply different voltages to each segment. For example, the control unit 33 applies a voltage to the first protrusion 22 to put the first protrusion 22 in a transparent state, and does not apply a voltage to the second protrusion 25 to put it in an off state (non-transparent state). The control unit 33 then applies a voltage to the sub-protrusion 29 that is weaker than the voltage applied to the first protrusion 22 to put the sub-protrusion 29 in a semi-transparent state. This allows the brightness to be changed gradually. Note that the strength of the voltage applied is not limited to this and may be any strength. For example, a voltage may be applied to the second protrusion 25 without applying a voltage to the first protrusion 22.
  • the control unit 33 may control the voltage based on, for example, sensors and navigation systems installed in the vehicle, changes in the surrounding environment, the passage of time, and the like. Moreover, the control unit 33 may control the voltage by combining the controls described above.
  • a laminate is prepared by sandwiching the intermediate layer 13 and the light control film 15 between the first glass plate 11 and the second glass plate 12. Then, for example, this laminate is placed in a rubber bag and pre-pressed at a temperature of about 50° C. to 100° C. in a vacuum with a gauge pressure of ⁇ 100 kPa to ⁇ 65 kPa.
  • the heating conditions, temperature conditions, vacuum conditions, and lamination method for the pre-pressing are appropriately selected in consideration of the properties of the light control layer 18 so that it does not deteriorate during lamination.
  • the pre-pressing step may be performed using a nip roller or the like instead of a rubber bag.
  • a laminated glass 10 with even greater durability can be obtained.
  • this heating and pressurizing process may not be used in order to simplify the process and in consideration of the characteristics of the material to be sealed in the laminated glass 10.
  • a transparent adhesive sheet OCA
  • a first laminate may be produced in which the light control layer 18 is attached to the second glass plate 12 via a second intermediate layer 132 that becomes part of the intermediate layer 13, and the first glass plate 11 may be attached to the light control layer 18 of the first laminate via 131 that becomes part of the intermediate layer 13 to produce the laminate.
  • an adhesive film may be used for the intermediate layer 13.
  • the temperature and vacuum conditions are appropriately selected in consideration of the properties of the intermediate layer 13 and the photochromic layer 18 so as not to deteriorate during lamination.
  • a frame-shaped intermediate layer may be added that is positioned between the first intermediate layer 131 and the second intermediate layer 132 and surrounds the outer periphery of the photochromic layer 18.
  • the position of the light control layer 18 is fixed in the space between the second glass plate 12 and the first glass plate 11.
  • the periphery of the space between the second glass plate 12 and the first glass plate 11 is then sealed with tape or the like to separate the space from the outside.
  • the curable transparent resin is poured into the space to fill it with the curable transparent resin.
  • the curable transparent resin is then cured to form the intermediate layer 13.
  • the curable transparent resin may be cured by any method, but examples of the method include heat curing, light curing, and moisture curing.
  • the first glass sheet 11 and the second glass sheet 12 may be bent by a conventionally known bending method.
  • the first glass sheet 11 and the second glass sheet 12 may be stacked and placed in a ring-shaped mold, heated to above their softening point, and bent by their own weight.
  • the first glass sheet 11 and the second glass sheet 12 may be press-molded individually or stacked together while still heated.
  • the above manufacturing process for the laminated glass 10 is an example, and the laminated glass 10 may also be manufactured using a cold bend technique, for example.
  • the number of the sub-segments 26 is one, but a plurality of the sub-segments 26 may be provided.
  • the description of the parts having the same configuration as the above-described embodiment will be omitted.
  • FIG. 6 is a schematic diagram showing another example of laminated glass. As shown in FIG. 6, in this example, two sub-segments, sub-segment 26 and sub-segment 26A, are provided. The configuration of sub-segment 26 is similar to that of the above-described embodiment, and therefore a description thereof will be omitted.
  • the secondary segment 26A has a number of secondary protrusions 29A. Between each of the secondary protrusions 29A, there is a first protrusion 22 or a secondary protrusion 29.
  • the sub-segment 26A has a plurality of sub-projections 29A and a sub-extension portion that connects the sub-projections 29A together.
  • the sub-segment 26A has a first sub-extension portion 27A and a second sub-extension portion 28A as the sub-extension portion.
  • the first sub-extension portion 27A extends in the Y direction and connects one ends of the plurality of sub-projections 29A aligned in the Y direction
  • the second sub-extension portion 28A connects the other ends of the plurality of sub-projections 29A aligned in the Y direction.
  • the first sub-extension portion 27A is located between the first sub-extension portion 27 and the second protrusion portion 25 of the sub-segment 26 in the X direction.
  • the first sub-extension portion 27 is a rectangular region in a plan view, but is not limited to being rectangular in a plan view and may be any shape.
  • the first sub-extension portion 27A is provided at a position overlapping the shielding layer 14.
  • the first sub-extension portion 27A may be located so that its entirety overlaps the shielding layer 14.
  • the second sub-extension portion 28A is located between the second sub-extension portion 28 and the second extension portion 24 of the sub-segment 26 in the X direction.
  • the second sub-extension portion 28A is a rectangular region in a planar view, but is not limited to being rectangular in a planar view and may be any shape.
  • the second sub-extension portion 28A is provided at a position overlapping the shielding layer 14.
  • the second sub-extension portion 28A may be located so that its entirety overlaps the shielding layer 14.
  • the sub-projection 29A projects in the X1 direction from the first sub-extension 27A and is connected to the second sub-extension 28A. That is, the sub-projection 29A extends in the X1 direction from the end in the X2 direction connected to the first sub-extension 27A to the end in the X1 direction connected to the second sub-extension 28A. In a plan view, at least a portion of the secondary protrusion 29A overlaps with the opening region 14A (does not overlap with the shielding layer 14).
  • the secondary protrusion 29A may have an end in the X2 direction and an end in the X1 direction overlapping with the shielding layer 14, and a portion between the end in the X1 direction and the end in the X2 direction overlapping with the opening region 14A.
  • the multiple sub-projections 29A are aligned at different positions in the Y direction. That is, each sub-projection 29A projects in the X direction from a different position in the Y direction of the first sub-extension 27A (second sub-extension 28A).
  • the first projecting portion 22 or the second projecting portion 25 is present between the multiple sub-projections 29A. That is, the first projecting portion 22 or the second projecting portion 25 is provided between the sub-projections 29A aligned in the Y direction.
  • the protrusions are arranged in the Y2 direction in the following order: first protrusion 22, secondary protrusions 29 and 29A, second protrusion 25, secondary protrusions 29 and 29A, first protrusion 22, secondary protrusions 29 and 29A, ... It is also preferable that the total area of each protrusion is the same in the opening region 14A.
  • the width of the sub-projection 29A in plan view is preferably narrower (thinner) than the width of the first projecting portion 22 and the second projecting portion 25 in the first direction.
  • the width of the sub-projection 29A in plan view may be the same as or different from the width of the sub-projection 29 in the first direction.
  • the number of the sub-projections 29A is preferably 1 to 50.
  • the width of the sub-projection 29A in the first direction is preferably, for example, 2 cm or more at minimum per sub-projection 29A.
  • the number is preferably 2 to 30.
  • the width of the sub-projections 29A can be increased.
  • the width of the sub-projections 29A in the first direction is about 3.3 cm, but is not limited to this width, and the number is not limited to 30.
  • the widths of the sub-projections 29A in the first direction may be the same or different from each other.
  • the sub-projections 29A may include sub-projections 29A of the same width and sub-projections 29A of different widths in the first direction.
  • the number of sub-segments is one or two has been shown, but if the number of sub-segments is N, in the opening region 14A, the first protrusion 22, the second protrusion 25, and the sub-protrusions are arranged in the following order along the Y direction: first protrusion 22, N sub-protrusions, second protrusion 25, N sub-protrusions, first protrusion 22, etc.
  • the N sub-protrusions arranged in the Y direction are considered as a sub-protrusion group, the arrangement directions of the sub-protrusion groups adjacent to each other in the Y direction via the first protrusion 22 or the second protrusion 25 are opposite to each other.
  • the sub-protrusions 29, 29A are arranged in the Y1 direction, but in the sub-protrusion group adjacent to that sub-protrusion group in the Y direction, the sub-protrusions 29A, 29 are arranged in the Y1 direction.
  • the secondary segment 26A is separated from the secondary segment 26 and the second segment 23 by an insulating portion 17A1. In other words, the secondary segment 26A is also electrically disconnected. Therefore, the secondary segment 26A is connected to the electrode 30 via the wiring 31 from the control unit 33.
  • the number of segments is four, and lighting can be achieved with improved design compared to the above embodiment. Lighting will be explained below with reference to Figures 7 to 9.
  • FIGS. 7 to 9 are schematic diagrams showing examples of lighting. Note that FIG. 7 to FIG. 9 show segments (protrusions) within the opening region 14A. Depending on the operation mode, for example, the control unit 33 applies a constant voltage to the first transparent electrode layer 17A or applies different voltages to each segment.
  • the control unit 33 can make the positions of the first protrusion 22 and the sub-protrusion 29 transparent by applying a voltage to the first segment 20 (first protrusion 22) and the sub-segment 26 (sub-protrusion 29). In other words, the control unit 33 can make the positions of the sub-protrusion 29A and the second protrusion 25 non-transparent by not applying a voltage to the sub-segment 26A (sub-protrusion 29A) and the second segment 23 (second protrusion 25).
  • the control unit 33 can change the position of transmission by switching between transmission and blocking. In other words, the control unit 33 can adjust the position of light collection by the laminated glass 10 (light control film 15). As a result, even if the number of segments is four, light can be collected in multiple places, making uniform light collection possible. In addition, complex designs can be realized.
  • the control unit 33 can increase the number of transparent locations by making the first protrusion 22 and the sub-protrusion 29A transparent. Furthermore, as shown in FIG. 8B, the control unit 33 can make the sub-protrusions 29, 29A transparent, thereby allowing light to be transmitted through fewer locations than when the first protrusion 22 and the sub-protrusion 29A are transparent, and allowing light to be transmitted through more locations than when the first protrusion 22 and the sub-protrusion 29 are transparent (as shown in FIG. 7). In this way, the control unit 33 can adjust the number of transparent locations. In other words, the control unit 33 can adjust the number of light-gathering locations by the light-controlling film 15. This allows light to be collected in multiple locations, making uniform light collection possible. Also, complex designs can be realized.
  • the control unit 33 may apply different voltages to each segment. For example, the control unit 33 applies a voltage to the first protrusion 22 and the sub-protrusion 29 to put them in a transparent state, and does not apply a voltage to the second protrusion 25 to put it in an off state (non-transparent state). The control unit 33 then applies a voltage to the sub-protrusion 29A that is weaker than the voltage applied to the first protrusion 22 and the sub-protrusion 29 to put the sub-protrusion 29A in a semi-transparent state. In this way, the control unit 33 can gradually change the brightness of the dimming film 15. Light can be collected in multiple places, making it possible to collect light uniformly. Also, by adjusting the voltage, complex designs can be realized other than by turning the power on and off.
  • control unit 33 may also control the voltage based on, for example, sensors and navigation systems mounted on the vehicle, changes in the surrounding environment, the passage of time, and the like. Moreover, the control unit 33 may control the voltage by combining the controls described above.
  • the light control film 15 is a light control film 15 having a first transparent electrode layer 17A and a second transparent electrode layer 17B to which a voltage is applied, and a light control layer 18 provided between the first transparent electrode layer 17A and the second transparent electrode layer 17B.
  • the light control film 15 has a first segment 20, a second segment 23, and a sub-segment 26 that are not electrically connected to each other.
  • the first segment 20 has a first extension portion 21 that extends in a first direction perpendicular to the stacking direction of the first transparent electrode layer 17A and the second transparent electrode layer 17B, and a second extension portion 22 that extends in a second direction perpendicular to the stacking direction of the first transparent electrode layer 17A and the second transparent electrode layer 17B.
  • the second segment 23 comprises a first protrusion 22 protruding from the first extension portion 21 in a second direction perpendicular to the stacking direction and the first direction, the second segment 23 comprises a second extension portion 24 located in the second direction further than the first extension portion 21 and extending in the first direction, and a second protrusion 25 protruding from the second extension portion 24 in a third direction which is the opposite direction to the second direction and is at a different position in the first direction from the first protrusion 22, and the secondary segment 26 comprises a plurality of secondary protrusions 29 aligned in the first direction, and at least one of the first protrusions 22 and the second protrusions 25 are present between the secondary protrusions 29.
  • the light control film 15 of the present disclosure has a first segment 20, a second segment 23, and a sub-segment 26 that are not electrically connected, and thus allows light control for each segment, thereby allowing appropriate light to be collected.
  • the light control film 15 according to the second aspect of the present disclosure is the light control film 15 according to the first aspect, and the secondary segment 26 has a secondary extension portion that extends in the first direction and connects the secondary protrusions 29 together. This allows the secondary segment 26 to collect light in the first direction that corresponds to the first direction of the first protrusion 22 and the second protrusion 25.
  • the light control film 15 according to the third aspect of the present disclosure is the light control film 15 according to the first or second aspect, in which the first segment 20 has a plurality of first protrusions 22, and the second segment 23 has a plurality of second protrusions 25. This allows for appropriate lighting.
  • the light control film 15 according to the fourth aspect of the present disclosure is the light control film 15 according to the third aspect, in which one of the multiple first protrusions 22 and the multiple second protrusions 25 is provided between the multiple secondary protrusions 29 aligned in the Y direction. This allows for appropriate lighting.
  • the light control film 15 according to the fifth aspect of the present disclosure is the light control film 15 according to the second aspect, and the sub-segment 26 includes, as sub-extensions, a first sub-extension 27 that connects one end of the multiple sub-projections 29 aligned in the first direction, and a second sub-extension 28 that connects the other ends of the multiple sub-projections 29 aligned in the first direction.
  • the sub-segments 26 can be connected continuously. In other words, the sub-segments 26 become one segment, and the number of electrodes 30 can be reduced to one per segment, which leads to improved design and cost reduction. It also becomes possible to properly let in light.
  • the light control film 15 according to the sixth aspect of the present disclosure is a light control film 15 according to any one of the first to fifth aspects, in which at least one of the first protrusion 22 and the second protrusion 25 is rectangular, trapezoidal, or triangular in plan view.
  • the first protrusion 22 or the second protrusion 25 be rectangular, trapezoidal, or triangular in plan view, it becomes possible to combine the respective shapes, improving the design. Note that these shapes are approximate, and no geometrical precision is required for the sides and vertices.
  • the light control film 15 according to the seventh aspect of the present disclosure is a light control film 15 according to any one of the first to sixth aspects, in which the number of secondary protrusions 29 is 1 to 50. By setting the number of secondary protrusions 29 to 1 to 50, it is possible to maintain an appropriate field of vision for the occupant.
  • the light control film 15 according to the eighth aspect of the present disclosure is the light control film 15 according to the seventh aspect, in which the number of secondary protrusions 29 is 2 or more and 30 or less. Even in the case where there are two secondary segments 26, by setting the number of secondary protrusions 29 to 2 or more and 30 or less, it is possible to maintain an appropriate field of vision for the occupant.
  • the light control film 15 according to the ninth aspect of the present disclosure is a light control film 15 according to any one of the first to eighth aspects, in which the width of the secondary protrusion 29 is narrower than the width of the first protrusion 22 and the second protrusion 25.
  • the light control film 15 according to the tenth aspect of the present disclosure is a light control film 15 according to any one of the first to ninth aspects, in which the second transparent electrode layer 17B is a common electrode that does not have any electrically non-connected areas over its entire area. This allows electricity to flow over the entire area of the second transparent electrode layer 17B, allowing appropriate transmission according to the shape of each segment.
  • the light control film 15 according to the eleventh aspect of the present disclosure is the light control film 15 according to any one of the first to ninth aspects, in which the first transparent electrode layer 17A has an insulating portion 17A1, and the first segment 20, the second segment 23, and the sub-segment 26 are partitioned by the insulating portion 17A1. Since the first transparent electrode layer 17A has the insulating portion 17A1, the first transparent electrode layer 17A can be partitioned by the insulating portion 17A1.
  • the insulating portion 17A1 can insulate in the planar direction (X direction and Y direction), when light passes through the first segment 20, the second segment 23, and the sub-segment 26, the shapes and patterns formed by the transmission of each segment do not cross each other, and the shapes and patterns formed by the transmission can be properly maintained.
  • the laminated glass 10 according to the twelfth aspect of the present disclosure comprises a first glass plate 11, a second glass plate 12, and a light control film 15 according to any one of the first to tenth aspects provided between the first glass plate 11 and the second glass plate 12.
  • the laminated glass 10 can appropriately let in light.
  • the laminated glass 10 according to the thirteenth aspect of the present disclosure is the laminated glass 10 according to the twelfth aspect, and has a shielding layer 14 that overlaps the peripheral portions of the first glass plate 11 and the second glass plate 12 and the peripheral portion of the light control film 15 in a plan view, and the first extension portion 21 and the second extension portion 24 are positioned to overlap the shielding layer 14 in a plan view.
  • the electrode 30 can be concealed, improving the design of the laminated glass 10.
  • the laminated glass 10 according to the fourteenth aspect of the present disclosure is the laminated glass 10 according to the thirteenth aspect, in which the first extension 21 and the second extension 24 do not overlap the opening region 14A, which is the region surrounded by the shielding layer 14 in a plan view, and the first protrusion 22, the second protrusion 25, and the sub-protrusion 29 each at least partially overlap the opening region 14A.
  • the first extension 21 and the second extension 24 do not overlap the opening region 14A, improving the design of the lighting.
  • the vehicle window glass according to the sixteenth aspect of the present disclosure includes the laminated glass 10 according to the twelfth aspect.
  • the vehicle window glass can adequately admit light into the vehicle interior.
  • the present invention is not limited to the contents of these embodiments.
  • the above-described components include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the above-described components can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the spirit of the above-described embodiments.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Dispersion Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention permet d'obtenir un éclairage approprié.　L'invention concerne un film de commande de lumière 15, une première couche d'électrode transparente ayant un premier segment 20, un second segment 23 et un sous-segment 26 qui ne sont pas électriquement connectés l'un à l'autre. Le premier segment 20 comprend : une première partie d'extension s'étendant dans une première direction orthogonale à une direction de stratification de la première couche d'électrode transparente et une seconde couche d'électrode transparente ; et une première partie en saillie faisant saillie à partir de la première partie d'extension dans une deuxième direction orthogonale à la direction de stratification et à la première direction. Le second segment 23 comprend : une seconde partie d'extension située dans la deuxième direction par rapport à la première partie d'extension et s'étendant dans la première direction ; et une seconde partie en saillie faisant saillie dans une troisième direction opposée à la deuxième direction à partir de la seconde partie d'extension et située à une position différente dans la première direction à partir de la première partie en saillie. Le sous-segment 26 comprend une pluralité de sous-parties en saillie alignées dans la première direction, et au moins l'une de la première partie en saillie et de la seconde partie en saillie est présente entre les sous-parties en saillie.
PCT/JP2024/035208 2023-10-05 2024-10-02 Film de commande de lumière, verre feuilleté et vitre pour véhicule Pending WO2025075026A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023-173345 2023-10-05
JP2023173345 2023-10-05

Publications (1)

Publication Number Publication Date
WO2025075026A1 true WO2025075026A1 (fr) 2025-04-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010091898A (ja) * 2008-10-10 2010-04-22 Asahi Glass Co Ltd 位相変調素子とその駆動方法および投射型表示装置
JP2018185368A (ja) * 2017-04-24 2018-11-22 大日本印刷株式会社 調光装置及び構造体
JP2020046645A (ja) * 2018-09-21 2020-03-26 凸版印刷株式会社 調光装置
WO2021025115A1 (fr) * 2019-08-06 2021-02-11 凸版印刷株式会社 Dispositif de réglage de lumière

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010091898A (ja) * 2008-10-10 2010-04-22 Asahi Glass Co Ltd 位相変調素子とその駆動方法および投射型表示装置
JP2018185368A (ja) * 2017-04-24 2018-11-22 大日本印刷株式会社 調光装置及び構造体
JP2020046645A (ja) * 2018-09-21 2020-03-26 凸版印刷株式会社 調光装置
WO2021025115A1 (fr) * 2019-08-06 2021-02-11 凸版印刷株式会社 Dispositif de réglage de lumière

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