WO2023204015A1 - 車両用窓ガラスシステム - Google Patents

車両用窓ガラスシステム Download PDF

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Publication number
WO2023204015A1
WO2023204015A1 PCT/JP2023/013907 JP2023013907W WO2023204015A1 WO 2023204015 A1 WO2023204015 A1 WO 2023204015A1 JP 2023013907 W JP2023013907 W JP 2023013907W WO 2023204015 A1 WO2023204015 A1 WO 2023204015A1
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WO
WIPO (PCT)
Prior art keywords
glass
vehicle window
vehicle
window glass
film
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.)
Ceased
Application number
PCT/JP2023/013907
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
優介 池田
暢子 満居
秀雄 光武
竜士 平田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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
Priority to DE112023001359.4T priority Critical patent/DE112023001359T5/de
Priority to CN202380033253.6A priority patent/CN118922392A/zh
Priority to JP2024516173A priority patent/JPWO2023204015A1/ja
Publication of WO2023204015A1 publication Critical patent/WO2023204015A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B17/10293—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
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/10467—Variable transmission
    • B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
    • 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
    • B32B17/10541—Functional features of the laminated safety glass or glazing comprising a light source or a light guide
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • 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

Definitions

  • the present invention relates to a vehicle window glass system.
  • Laminated glass encapsulated with a transparent screen film or the like may be used as vehicle window glass.
  • a beam of light projected from a projection device placed inside a car forms an image on the transparent screen film, and the image is visibly displayed as an image to an observer on the side of the projection device.
  • the present invention has been made in view of the above points, and an object of the present invention is to improve the visibility of images displayed on the display from outside the vehicle in a vehicle window glass system having a display.
  • a vehicle window glass system includes a vehicle window glass that includes a glass member and a display section attached to the glass member, and a second window glass that is closer to the inside of the vehicle than the vehicle window glass.
  • a projection device located on the side, the display unit having a display element, and a visible light transmittance of the vehicle window glass in a portion including the display unit being 5%. 90% or less, the linear density of the display element is greater than 0.057 pieces/mm, and the contrast is greater than or equal to 1.4.
  • a vehicle window glass system having a display section it is possible to improve the visibility of images displayed on the display section from outside the vehicle.
  • FIG. 1 is a plan view illustrating a vehicle window glass according to a first embodiment.
  • 2 is a sectional view taken along line AA in FIG. 1.
  • FIG. It is a figure explaining the resolution of LED. It is a figure explaining LED pitch.
  • FIG. 3 is a diagram illustrating an original image of an image drawn on a monitor.
  • FIG. 3 is a diagram schematically showing an image drawn on a monitor.
  • FIG. 3 is a diagram illustrating the positional relationship between a monitor and a subject. It is an example of the approximate curve of LEDp and visual recognition score S in case of Cwd1.44.
  • FIG. 2 is a cross-sectional view illustrating a vehicle window glass according to Modification 1 of the first embodiment.
  • FIG. 3 is a cross-sectional view illustrating a vehicle window glass according to a second embodiment.
  • FIG. 7 is a cross-sectional view illustrating a vehicle window glass according to a third embodiment.
  • FIG. 7 is a cross-sectional view illustrating a vehicle window glass according to a fourth embodiment. It is a schematic diagram (part 1) which illustrates the vehicle window glass system concerning 4th Embodiment. It is a schematic diagram (part 2) which illustrates the vehicle window glass system concerning 4th Embodiment.
  • a vehicle is typically a car, but also refers to a moving object having a vehicle window glass, including trains, ships, aircraft, etc.
  • planar view refers to viewing a predetermined area of a vehicle window glass from the normal direction of the inside surface of the vehicle window glass
  • planar shape refers to a predetermined area of a vehicle window glass viewed from the normal direction of the inside surface of the vehicle window glass. This refers to the shape viewed from the normal direction of the inside surface of the vehicle.
  • FIG. 1 is a plan view illustrating a vehicle window glass according to a first embodiment, and schematically shows a state in which the vehicle window glass is attached to a vehicle and viewed from inside the vehicle interior to outside the vehicle interior.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • the vehicle window glass 1 includes a glass member 10 and a display section 20.
  • the glass member 10 is a laminated glass having a glass plate 11, a glass plate 12, and an interlayer film 13.
  • the glass plate 11 is placed on the second side which is the inside of the vehicle when the vehicle window glass 1 is attached to the vehicle, and the glass plate 12 is placed on the second side which is the inside of the vehicle when the vehicle window glass 1 is attached to the vehicle. It is arranged on the first side.
  • the vehicle window glass 1 is shown in a rectangular shape with the actual curved shape omitted and the external shape simplified.
  • the vehicle window glass 1 may have a compound curved shape that is curved in both the longitudinal direction and the lateral direction.
  • the vehicle window glass 1 may have a single curved shape that is curved only in the longitudinal direction or a single curved shape that is curved only in the lateral direction.
  • the vehicle window glass 1 may have a flat plate shape that is not curved as shown in FIGS. 1 and 2.
  • the vehicle window glass 1 is curved, it is preferable that the vehicle window glass 1 is curved so as to be convex toward the outside of the vehicle (first side).
  • the planar shape of the vehicle window glass 1 is not limited to a rectangular shape, and may be any shape including a trapezoid or the like.
  • the vehicle window glass 1 can be applied to, for example, an automobile window glass.
  • An automobile has window glass such as a windshield, a front side glass, a rear side glass, and a rear glass provided in an opening of the vehicle body.
  • An automobile may have window glass other than these, such as a roof glass, a front bench glass, a rear quarter glass, an extra window, and the like. It is possible to realize an automobile in which the vehicle window glass 1 is mounted on one or more of the window glasses illustrated here.
  • the vehicle window glass 1 may be applied not only to the window glass of an automobile but also to the window glass of a moving body including a train, a ship, an airplane, and the like. In that case, a vehicle equipped with the vehicle window glass 1 can be realized.
  • the glass plate 11 is an inside glass plate that becomes the inside (second side) of the vehicle when the vehicle window glass 1 is attached to the vehicle.
  • the glass plate 12 is an outer side glass plate that becomes the outer side (first side) of the vehicle when the vehicle window glass 1 is attached to the vehicle.
  • the minimum value of the radius of curvature is preferably 500 mm or more and 100,000 mm or less.
  • the radius of curvature of the glass plate 11 and the glass plate 12 may be the same or different.
  • the radius of curvature of glass plate 11 and glass plate 12 is different, the radius of curvature of glass plate 11 is smaller than the radius of curvature of glass plate 12.
  • the glass plate 11 and the glass plate 12 are a pair of glass plates facing each other, and the intermediate film 13 and the display section 20 are located between the pair of glass plates.
  • the glass plate 11 and the glass plate 12 are fixed to each other with the intermediate film 13 and the display section 20 sandwiched therebetween.
  • the intermediate film 13 is a film that joins the glass plate 11 and the glass plate 12.
  • the intermediate film 13 includes, for example, a first intermediate film 131 that is bonded to the glass plate 11 and a second intermediate film 132 that is bonded to the glass plate 12. Separately from the first intermediate film 131 and the second intermediate film 132, the frame-shaped intermediate film is located between the first intermediate film 131 and the second intermediate film 132 and surrounds the outer periphery of the display section 20. Good too. When there is no particular need to distinguish between the first intermediate film 131 and the second intermediate film 132, they are simply referred to as an intermediate film 13.
  • the outer periphery of the intermediate film 13 is edge-treated. That is, it is preferable that the ends (edges) of the interlayer film 13 be treated so as not to protrude significantly from the ends (edges) of the glass plates 11 and 12. It is preferable that the amount of protrusion of the end portion of the interlayer film 13 from the end portions of the glass plates 11 and 12 is 150 ⁇ m or less, since this does not impair the appearance. However, if the vehicle window glass 1 is a side glass, the lower edge is hidden by the door panel, so edge treatment of the lower edge of the interlayer film 13 is not essential. Details of the glass plate 11, the glass plate 12, and the intermediate film 13 will be described later.
  • the shielding layer may be provided in a strip shape, for example, in the peripheral area of the vehicle window glass 1.
  • the shielding layer is an opaque layer, and is provided in a band shape along the peripheral edge of the vehicle window glass 1, for example.
  • the shielding layer is, for example, an opaque colored ceramic layer. Although the color is arbitrary, dark colors such as black, brown, gray, and dark blue are preferable, and black is more preferable.
  • the shielding layer may be a colored intermediate film or a colored film having a light-shielding property, a combination of a colored intermediate film and a colored ceramic layer, or a layer having a light control function.
  • the colored film may be integrated with an infrared reflective film or the like.
  • the width of the shielding layer in plan view is, for example, about 10 mm to 200 mm.
  • the presence of the opaque shielding layer on the vehicle window glass 1 can suppress deterioration of the adhesive made of resin such as urethane that holds the peripheral portion of the vehicle window glass 1 to the vehicle body due to ultraviolet rays.
  • the display section 20 has a bus bar or electrode, the bus bar or electrode electrically connected to the display section 20 can be hidden so that it is difficult to see from outside and/or inside the vehicle.
  • the shielding layer can be formed, for example, by applying a ceramic color paste containing a fusible glass frit containing a black pigment onto a glass plate by screen printing or the like and firing it, but is not limited thereto.
  • the shielding layer may be formed, for example, by applying an organic ink containing a black or deep-colored pigment onto a glass plate by screen printing or the like and drying it.
  • the display section 20 is attached to the glass member 10.
  • "attached to the glass member” means that when the display part is enclosed in an interlayer film as shown in FIG. 2, the display part is attached to the glass member as shown in FIGS. shall include at least .
  • the display section 20 is enclosed in the intermediate film 13 of the glass member 10.
  • the display section 20 has a display element.
  • the display unit 20 is, for example, an LED (Light Emitting Diode) display, an organic EL (Organic Electro-Luminescence) display, an inorganic EL (Inorganic Electro-Luminescence) display, a liquid crystal display, or the like.
  • LED displays include displays equipped with small LEDs called mini LEDs and micro LEDs.
  • the display section 20 includes, for example, a glass or plastic substrate and a display element (LED element, organic EL display element, inorganic EL display element, liquid crystal display element, etc.). For example, display elements of a predetermined size are arranged vertically and horizontally at a predetermined pitch on a substrate.
  • the display section 20 may include components other than the substrate and the display element (such as a protective layer covering the display element) as necessary. Each component of the display unit 20 may be formed from a transparent material to make the outside visible.
  • the display unit 20 can display information such as images and characters.
  • the information here includes, but is not particularly limited to, advertising, communication with the outside of the vehicle, and automatic driving display, for example.
  • the direction in which the display unit 20 displays information such as images and characters is toward the outside of the vehicle.
  • the display unit 20 may be arranged on substantially the entire vehicle window glass 1 or only on a part of the vehicle window glass 1, as necessary. Note that when the vehicle window glass 1 is applied to a windshield, the display section 20 is arranged at a position that does not hinder the driver's driving.
  • the planar shape of the display unit 20 is, for example, a rectangle smaller than the planar shape of the vehicle window glass 1.
  • the thickness of the display section 20 is, for example, 0.1 mm or more and 3 mm or less.
  • the visible light transmittance of the portion of the vehicle window glass 1 including the display section 20 is 5% or more and 90% or less.
  • the glass plate 11, the glass plate 12, and the interlayer film 13 will be explained in detail.
  • the glass plates 11 and 12 may be made of inorganic glass or organic glass.
  • the inorganic glass for example, soda lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, quartz glass, etc. can be used without particular limitation. That is, the glass plates 11 and 12 can include glass selected from the group consisting of these.
  • the glass plate 12 located on the outside of the vehicle window glass 1 is preferably inorganic glass from the viewpoint of scratch resistance, and preferably soda lime glass from the viewpoint of moldability.
  • the glass plate 11 and the glass plate 12 are soda lime glass, clear glass, green glass containing a predetermined amount or more of an iron component, and UV cut green glass can be suitably used. Privacy glass, which will be described later, may be used as the glass plates 11 and 12 in some cases.
  • the inorganic glass may be either untempered glass or tempered glass.
  • Unstrengthened glass is obtained by forming molten glass into a plate shape and slowly cooling it.
  • Tempered glass is made by forming a compressive stress layer on the surface of untempered glass.
  • the tempered glass may be either physically strengthened glass such as air-cooled strengthened glass or chemically strengthened glass.
  • physically strengthened glass the temperature difference between the glass surface and the inside of the glass can be applied to the glass surface by operations other than gradual cooling, such as rapidly cooling a glass plate that has been uniformly heated during bending from a temperature near its softening point. By creating a compressive stress layer, the glass surface can be strengthened.
  • the glass surface can be strengthened by, for example, creating compressive stress on the glass surface using an ion exchange method or the like after bending.
  • glass that absorbs ultraviolet rays or infrared rays may be used, and although transparent is preferable, a glass plate that is colored to the extent that transparency is not impaired may also be used.
  • organic glass materials include polycarbonate, acrylic resins such as polymethyl methacrylate, and transparent resins such as polyvinyl chloride and polystyrene.
  • the shape of the glass plates 11 and 12 is not particularly limited to a rectangular shape, and may be shaped into various shapes and curvatures. Gravity forming, press forming, roller forming, etc. are used for bending the glass plates 11 and 12.
  • the method for forming the glass plates 11 and 12 is also not particularly limited, but for example, in the case of inorganic glass, glass plates formed by a float method or the like are preferred.
  • the thickness of the glass plate 12 is preferably 1.1 mm or more and 3 mm or less at the thinnest part.
  • the thickness of the glass plate 12 at the thinnest part is more preferably 1.8 mm or more and 2.8 mm or less, still more preferably 1.8 mm or more and 2.6 mm or less, still more preferably 1.8 mm or more and 2.2 mm or less, 1. More preferably, it is 8 mm or more and 2.0 mm or less.
  • the thickness of the glass plate 11 is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the glass plate 11 is 0.3 mm or more, handling properties are good, and when it is 2.3 mm or less, the mass does not become too large.
  • the glass plates 11 and 12 may have a flat plate shape or a curved shape. However, if the glass plates 11 and 12 are curved and the thickness of the glass plate 11 is not appropriate, if two pieces of glass with particularly deep bends are formed as the glass plates 11 and 12, a mismatch will occur in the shapes of the two pieces. , which greatly affects glass quality such as residual stress after crimping.
  • the thickness of the glass plate 11 is set to 0.3 mm or more and 2.3 mm or less.
  • glass quality such as residual stress can be maintained.
  • Setting the thickness of the glass plate 11 to 0.3 mm or more and 2.3 mm or less is particularly effective in maintaining glass quality in deeply curved glass.
  • the thickness of the glass plate 11 is more preferably 0.5 mm or more and 2.1 mm or less, and even more preferably 0.7 mm or more and 1.9 mm or less. Within this range, the above effects become even more remarkable.
  • the glass plates 11 and/or 12 do not have a constant thickness, and the thickness may vary from place to place as necessary.
  • the vehicle window glass 1 is a windshield
  • one or both of the glass plates 11 and 12 becomes thicker from the lower side to the upper side of the windshield when the windshield is attached to the vehicle. It may also have a wedge-shaped cross section.
  • the thickness of the interlayer film 13 is constant, the total wedge angle of the glass plate 11 and the glass plate 12 may be varied within a range of, for example, greater than 0 mrad and less than or equal to 1.0 mrad.
  • a coating having water repellency, ultraviolet ray and infrared ray blocking functions, or a coating having low reflection characteristics and low radiation characteristics may be provided on the outside of the glass plates 11 and/or 12. Furthermore, a coating having properties such as ultraviolet and infrared ray blocking, low radiation properties, visible light absorption, and coloring may be provided on the side of the glass plates 11 and/or 12 that is in contact with the intermediate film 13.
  • the glass plates 11 and 12 are curved inorganic glass
  • the glass plates 11 and 12 are bent and formed after forming by the float method and before being bonded with the interlayer film 13. Bending is performed by softening the glass by heating.
  • the heating temperature of the glass during bending is preferably controlled within the range of approximately 550°C to 700°C.
  • Thermoplastic resins are often used as the intermediate film 13, such as plasticized polyvinyl acetal resin, plasticized polyvinyl chloride resin, saturated polyester resin, plasticized saturated polyester resin, polyurethane resin, and plasticized polyurethane resin.
  • Thermoplastic resins conventionally used for this type of use include resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, and ionomer resins.
  • the intermediate film 13 can contain at least one resin selected from the group consisting of these resins. Further, as the intermediate film 13, a resin composition containing a hydrogenated modified block copolymer described in Japanese Patent No. 6065221 can also be suitably used.
  • plasticized polyvinyl acetal resin has an excellent balance of performance such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. is preferably used.
  • thermoplastic resins may be used alone or in combination of two or more.
  • "Plasticized" in the above-mentioned plasticized polyvinyl acetal resin means plasticized by addition of a plasticizer. The same applies to other plasticized resins.
  • the specific plasticizer when encapsulating a specific substance in the interlayer film 13, depending on the type of substance to be encapsulated, the specific plasticizer may cause deterioration, and in that case, a resin that does not substantially contain the plasticizer may be used. It is preferable to use That is, it may be preferable that the interlayer film 13 does not contain a plasticizer.
  • the resin that does not contain a plasticizer include ethylene-vinyl acetate copolymer resin (hereinafter also referred to as "EVA" as necessary).
  • the above-mentioned polyvinyl acetal resin includes polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter also referred to as "PVA” as necessary) and formaldehyde, and polyvinyl acetal in a narrow sense obtained by reacting PVA and acetaldehyde.
  • PVA polyvinyl alcohol
  • PVB polyvinyl butyral resin
  • PVB transparency, weather resistance, strength, adhesive strength, PVB is preferred because it has an excellent balance of performance such as penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation.
  • these polyvinyl acetal resins may be used alone or in combination of two or more types.
  • the material forming the intermediate film 13 is not limited to thermoplastic resin. Further, the intermediate film 13 may contain functional particles such as an infrared absorber, an ultraviolet absorber, and a luminescent agent. Further, the interlayer film 13 may have a colored portion called a shade band.
  • the coloring pigment used to form the colored part is not particularly limited as long as it can be used for plastics and the visible light transmittance of the colored part is 40% or less, but for example, Organic coloring pigments such as azo, phthalocyanine, quinacridone, perylene, perinone, dioxazine, anthraquinone, isoindolino, oxides, hydroxides, sulfides, chromic acid, sulfates, carbonates, Examples include inorganic coloring pigments such as silicates, phosphates, arsenates, ferrocyanides, carbon, and metal powders. These colored pigments may be used alone or in combination of two or more.
  • the amount of the colored pigment added may be arbitrary depending on the desired color tone and is not particularly limited, as long as the visible light transmittance of the colored portion is 40% or less.
  • the visible light transmittance can be measured by a method based on JIS R 3106:1998.
  • visible light refers to light with a wavelength of 380 nm or more and 780 nm or less.
  • the thickness of the intermediate film 13 is preferably 0.5 mm or more at the thinnest part.
  • the film thickness of the intermediate film 13 is the sum of the film thickness of the first intermediate film 131 and the film thickness of the second intermediate film 132.
  • the film thickness is as follows. When the thickness of the interlayer film 13 at its thinnest part is 0.5 mm or more, the impact resistance necessary for a vehicle window glass will be sufficient. Further, the thickness of the intermediate film 13 is preferably 3 mm or less at the thickest portion. When the maximum thickness of the interlayer film 13 is 3 mm or less, the mass of the vehicle window glass does not become too large. The maximum thickness of the intermediate film 13 is more preferably 2.8 mm or less, and even more preferably 2.6 mm or less.
  • the interlayer film 13 does not have a constant thickness, and the thickness may vary from place to place as necessary.
  • the interlayer film 13 may have a wedge-shaped cross section in which the thickness increases from the lower side to the upper side of the windshield when the windshield is attached to the vehicle.
  • the wedge angle of the interlayer film 13 may be varied within a range of, for example, greater than 0 mrad and less than or equal to 1.0 mrad.
  • the intermediate film 13 may have three or more layers.
  • the interlayer film is formed from three or more layers and the shear modulus of any layer other than the layers on both sides is made smaller than that of the layers on both sides by adjusting the plasticizer, etc., the vehicle window glass 1 Sound insulation can be improved.
  • the shear modulus of the layers on both sides may be the same or different.
  • first intermediate film 131 and the second intermediate film 132 included in the intermediate film 13 be formed of the same material, but it is preferable that the first intermediate film 131 and the second intermediate film 132 be formed of different materials. Good too. However, from the viewpoint of adhesion to the glass plates 11 and 12 or the functional material to be inserted into the vehicle window glass 1, it is desirable to use the above-mentioned materials for 50% or more of the thickness of the interlayer film 13.
  • the above-mentioned resin material that will become the interlayer film is appropriately selected, and extrusion molded in a heated molten state using an extruder. Extrusion conditions such as extrusion speed of the extruder are set to be uniform. Thereafter, the extruded resin film is stretched, for example, as necessary, in order to have curvature on the upper and lower sides in accordance with the design of the vehicle window glass, thereby completing the interlayer film 13.
  • the total thickness of the vehicle window glass 1 is preferably 2.8 mm or more and 10 mm or less. If the total thickness of the vehicle window glass 1 is 2.8 mm or more, sufficient rigidity can be ensured. Moreover, if the total thickness of the vehicle window glass 1 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced.
  • the misalignment between the glass plate 11 and the glass plate 12 is preferably 1.5 mm or less, more preferably 1 mm or less.
  • the displacement between the glass plate 11 and the glass plate 12 is the amount of displacement between the end of the glass plate 11 and the end of the glass plate 12 in plan view.
  • the misalignment between the glass plate 11 and the glass plate 12 on at least one side of the vehicle window glass 1 is 1.5 mm or less, since this does not impair the appearance. It is more preferable that the misalignment between the glass plate 11 and the glass plate 12 on at least one side of the vehicle window glass 1 is 1.0 mm or less, since this does not impair the appearance.
  • a first interlayer film 131, a display section 20, and a second interlayer film 132 are sandwiched between the glass plate 11 and the glass plate 12 to form a laminate. Then, for example, this laminate is placed in a rubber bag, a rubber chamber, a resin bag, etc., and the temperature is controlled in the range of approximately 70 to 110°C in a vacuum controlled at a gauge pressure in the range of -65 kPa to -100 kPa. and glue.
  • the heating conditions, temperature conditions, and lamination method are selected as appropriate.
  • a vehicle window glass 1 with even greater durability can be obtained.
  • this heating and pressurizing process may not be used in order to simplify the process and take into account the characteristics of the material sealed in the vehicle window glass 1.
  • Cold bending a method called "cold bending” in which either one or both of the glass plates 11 and 12 are joined in a mutually elastically deformed state.
  • Cold bending consists of a laminate consisting of a glass plate 11, a first interlayer film 131, a display section 20, a second interlayer film 132, and a glass plate 12 fixed by temporary fixing means such as tape, and a conventionally known nip roller.
  • temporary fixing means such as tape
  • a conventionally known nip roller Alternatively, this can be achieved by using a pre-pressing device such as a rubber bag or a rubber chamber, and an autoclave.
  • a heating wire, infrared reflection, light emission, power generation, dimming, a touch panel, visible light reflection, etc. are provided between the glass plate 11 and the glass plate 12, within a range that does not impair the effects of the present application.
  • a film or device having functions such as scattering, decoration, absorption, etc.
  • the surface of the glass member 10 may have a film having functions such as antifogging, water repellency, heat shielding, and low reflection.
  • a film having functions such as heat shielding and heat generation may be provided on the outside surface of the glass plate 11 and the inside surface of the glass plate 12.
  • the inventors conducted an experiment to find out what level of linear density of the display element is necessary for the visibility of the image displayed on the display section 20 from outside the vehicle to be within an acceptable range. Specifically, an LED was assumed as the display element, and the linear density of the display element at which the visibility of the image displayed on the display unit 20 from outside the vehicle is within an acceptable range even during the daytime was investigated through experiments and simulations. The details will be explained below.
  • the LED size and LED pitch can be changed arbitrarily as variables.
  • the shape of the LED 220 when the monitor 210 is viewed from the front is a square, and the length of one side is defined as the LED size (LEDs).
  • LED pitch 2 the case where the interval between adjacent LEDs 220 is the same as the LED size (LEDs)
  • LED pitch 3 the case where the interval between adjacent LEDs 220 is n times the LED size (LEDs) was defined as LED pitch n+1, and LED pitch 4 to LED pitch 9 are defined.
  • the original image of the image drawn on the monitor 210 is one in which Landolt rings of seven different sizes are arranged as shown in FIG.
  • the sizes of the Landolt rings shown in FIG. 5 are called 287, 143, 72, 36, 18, 9, and 5 in order from the largest.
  • Landolt ring size 72 is 0.073 in terms of visual acuity
  • Landolt ring size 36 is 0.145 in terms of visual acuity.
  • the visual acuity conversion here is defined by the visual acuity value of the Landolt ring optotype described in JIST7309:2002.
  • the background of the Landolt ring is shown as a dot pattern for convenience, but the original image including the Landolt ring and its background has sufficient resolution to not interfere with the evaluation described below.
  • FIG. 5 When the image in FIG. 5 is drawn on the monitor 210 using the above evaluation program, an image as shown in the partially enlarged view of FIG. 6, for example, is drawn. Although only a part of the drawn image is shown in FIG. 6, all of the Landolt rings of seven different sizes shown in FIG. 5 are drawn according to the LED size and LED pitch set in the evaluation program.
  • the image to be drawn has the highest resolution when the LED pitch is 2, and the lowest resolution when the LED pitch is 9.
  • the monitor 210 was installed on a horizontal floor in a room. As shown in FIG. 7(a), the subject 300 stands in front of the monitor 210 at approximately the center in the left-right direction (X direction), and as shown in FIG. 7(b), the height of the subject's 300's line of sight is The height of the monitor 210 was adjusted so that it was located approximately at the center of the monitor 210 in the vertical direction (Z direction). At this time, the distance Ly between the midpoint of the left and right eyes of the subject 300 and the center of the monitor 210 was set to 3 m in the Y direction parallel to the floor of the room.
  • the X direction and the Y direction are in a plane parallel to the floor, and the Z direction is a normal direction to the floor.
  • Wb and Bb mentioned above were determined by installing the surface brightness meter so that the light receiving part of the surface brightness meter was located at the same position as the eye position of the subject 300 in FIGS. 7(a) and 7(b). I measured it.
  • the room was made completely dark, and subjects 300 with visual acuity of 1.5 or higher were asked to visually view the image displayed on the monitor 210 and answer the direction of one of seven Landolt rings according to size. If the answer was correct, it was marked as ⁇ (seen), and if the answer could not be answered or the answer was incorrect, it was marked as ⁇ (not visible).
  • This LED panel has a maximum luminance L LED [cd/m 2 ] of 3000.
  • the maximum brightness L LED [cd/m 2 ] is the maximum brightness in the minimum measurement range of the brightness meter when the brightness of the light source is measured at a distance of 1 m.
  • Table 7 shows that by increasing the LED linear density to more than 0.057 [pieces/mm], when the LED size is 3.5 mm or more, one or more people can watch the image displayed on the display in an outdoor environment during the day. Visible.
  • one or more people can view the image displayed on the display unit in an outdoor environment during the daytime when the LED size is 2 mm or more.
  • the LED linear density by increasing the LED linear density to more than 0.169 pieces/mm, when the LED size is 0.5 mm or more, one or more people can view the image displayed on the display in a daytime outdoor environment. .
  • the shape of the LED was square, but the shape of the LED may be other than square.
  • the LED size is the length of the short side
  • the LED size is the diameter
  • the LED size is the short axis.
  • the visible light transmittance of components located inside the vehicle from the display section 20 is preferably 30% or less, and 20% or less. It is more preferably at most 10%, even more preferably at most 10%.
  • the term "components located on the inside of the vehicle from the display section 20" refers to a collection of various components located on the inside of the vehicle from the display section 20, and a plurality of components are located on the inside of the vehicle. It is not limited to an aggregate of composite elements, but also includes the case of a single element where only a single component is located inside the vehicle.
  • the visible light transmittance of the aggregate of the constituent elements for example, the glass plate 11 and the first interlayer film 131, is preferably 30% or less.
  • the glass plate 11 may be made of privacy glass.
  • the first intermediate film 131 may be a colored intermediate film.
  • the visibility of the first intermediate film 131 can be reduced. It is also possible to lower the light transmittance.
  • the visible light transmittance of the components located on the outer side of the vehicle than the display section 20 is preferably more than 30% and less than 90%.
  • “component elements located on the outer side of the vehicle than the display section 20” refers to a collection of various components located on the outer side of the vehicle than the display section 20, and a plurality of components are located on the outer side of the vehicle. It is not limited to an aggregate of composite elements in this case, but also includes a single element in the case where only a single component is located on the outside of the vehicle.
  • the visible light transmittance of the assembly of the constituent elements for example, the assembly composed of the glass plate 12 and the second intermediate film 132, is preferably more than 30% and less than 90%, and more than 40% and less than 90%. is more preferable, and more preferably more than 50% and 90% or less.
  • the glass plate 12 may be made of green glass or clear glass, for example.
  • the second intermediate film 132 may be made of a clear intermediate film, for example.
  • the visible light transmittance of the second intermediate film 132 can be lowered by reducing the thickness of the second intermediate film 132 and/or selecting a material for the second intermediate film 132.
  • the visible light transmittance of the component located on the vehicle outer side than the display section 20 is higher than the visible light transmittance of the component located on the vehicle inner side than the display section 20.
  • green glass is highly transparent glass.
  • the visible light transmittance of green glass is, for example, about 83% to 88% when the plate thickness is 1.6 mm to 2.0 mm.
  • clear glass is a glass with higher transparency than green glass, and the visible light transmittance is, for example, about 88% to 92% when the plate thickness is 1.8 mm to 2.0 mm.
  • a clear interlayer film is a highly transparent interlayer film.
  • the visible light transmittance of the clear interlayer film is, for example, about 90% to 95% when the film thickness is 0.76 mm.
  • products with a film thickness of 0.76 mm and a visible light transmittance of 93.7% are commercially available from Sekisui Chemical Co. and Eastman.
  • Privacy glass is glass with lower transparency than green glass and clear glass, and is also called dark gray glass. Privacy glass can be realized by adjusting the total iron content converted to Fe 2 O 3 in the glass plates 11 and/or 12.
  • the visible light transmittance of the privacy glass can be adjusted to, for example, about 40% to 50% when the plate thickness is 1.8 mm, and about 30% to 45% when the plate thickness is 2.0 mm.
  • the glass matrix composition is SiO 2 : 66% to 75%, Na 2 O: 10% to 20%, CaO: 5% to 15%.
  • a colored interlayer film is an interlayer film with lower transparency than a clear interlayer film.
  • the colored interlayer film can be produced by coloring the materials exemplified in the explanation of [intermediate film]. Specifically, a colored interlayer film can be obtained by incorporating a coloring agent into a composition mainly containing a thermoplastic resin.
  • the colored interlayer film may contain a plasticizer for adjusting the glass transition point.
  • the colorant is not particularly limited as long as it reduces visible light transmittance, and examples include dyes, inorganic pigments, and organic pigments. Among these, inorganic pigments or organic pigments are preferred because they are less likely to fade due to long-term use, and inorganic pigments are preferred because they have excellent light resistance.
  • organic pigments include black pigments such as aniline black, red pigments such as alizarin lake, and the like.
  • inorganic pigments include carbon pigments and metal oxide pigments.
  • black pigments such as carbon black, ivory black, mars black, peach black, lamp black, magnetite type triiron tetroxide, brown pigments such as amber, Burton umber, Yellow Walker, Van Dyke brown, sienna, Burton sienna, red iron oxide, Red pigments such as molybdenum red and cadmium red, orange pigments such as red yellow lead and chrome vermilion, blue pigments such as ultramarine, navy blue, cobalt blue, and cerulean blue, and green pigments such as chromium oxide, pyridian, emerald green, and cobalt green. , yellow pigments such as yellow lead, cadmium yellow, yellow iron oxide, and titanium yellow, and purple pigments such as manganese violet and mineral violet. These colorants may be used alone or in combination of two or more
  • the colored interlayer film further contains an infrared absorber, an ultraviolet absorber, a fluorescent agent, an adhesion regulator, a coupling agent, a surfactant, an antioxidant, a heat stabilizer, a light stabilizer, a dehydrating agent, an antifoaming agent, It may contain one or more types of various additives such as antistatic agents and flame retardants.
  • the colored interlayer film may be produced by forming a printed layer in a dark color on the surface of the uncolored first interlayer film 131 and/or second interlayer film 132 to form a colored interlayer film.
  • a method for forming the dark-colored printed layer a conventional printing method using a colored material on a resin base material can be applied.
  • the colored material include organic pigments and inorganic pigments similar to the above-mentioned colorants.
  • the printed layer in this case does not need to have durability at temperatures near the softening point of glass, unlike a ceramic shielding layer, so it is possible to use, for example, an organic pigment containing carbon black.
  • the thickness of the printed layer can be adjusted as appropriate so that the visible light transmittance of the first intermediate film 131 is equal to or less than a desired value.
  • the visible light transmittance of the first interlayer film 131 and/or the second interlayer film 132 can be significantly reduced.
  • products with a film thickness of 0.76 mm and a visible light transmittance of 1.33%, and products with a film thickness of 0.76 mm and a visible light transmittance of 8.96% are sold by Sekisui Chemical Co., Ltd. and Eastman Co., Ltd. It is commercially available from.
  • a product with a film thickness of 0.76 mm and a visible light transmittance of 18.00% is commercially available from Sekisui Chemical Co., Ltd.
  • Modification 1 of the first embodiment shows an example in which the display section 20 is pasted on the vehicle-inside surface of a glass member. Note that in Modification 1 of the first embodiment, descriptions of components that are the same as those of the already described embodiments may be omitted.
  • FIG. 9 is a cross-sectional view illustrating a vehicle window glass according to Modification 1 of the first embodiment.
  • the vehicle window glass 1A includes a glass member 10A, a display section 20, and an adhesive layer 30.
  • the glass member 10A is a laminated glass including a glass plate 11, a glass plate 12, and an interlayer film 13.
  • the display section 20 is attached via an adhesive layer 30 to the vehicle-inside surface of the glass plate 11 that constitutes the glass member 10A.
  • Examples of the material for the adhesive layer 30 include acrylic, acrylate, urethane, urethane acrylate, epoxy, epoxy acrylate, polyolefin, modified olefin, polypropylene, ethylene vinyl alcohol, vinyl chloride, and chloroprene.
  • Examples include rubber-based, cyanoacrylate-based, silicone-based, polyamide-based, polyimide-based, polystyrene-based, and polyvinyl butyral-based materials.
  • the adhesive layer 30 can include at least one material selected from the group consisting of these materials.
  • the thickness of the adhesive layer 30 is, for example, 0.2 ⁇ m or more and 2000 ⁇ m or less.
  • the image displayed on the display unit 20 in the daytime outdoor environment can be seen by more than one in four people. is visible.
  • ⁇ Second embodiment> an example is shown in which the display unit 20 is attached to the vehicle-inside surface of a single glass panel instead of a laminated glass panel. Note that in the second embodiment, descriptions of components that are the same as those in the already described embodiments may be omitted.
  • FIG. 10 is a cross-sectional view illustrating a vehicle window glass according to the second embodiment.
  • the vehicle window glass 2 includes a glass member 40, a display section 20, and an adhesive layer 30.
  • the display section 20 is attached to the vehicle-inside surface of the glass member 40 via an adhesive layer 30.
  • the glass member 40 is a single glass plate.
  • As the glass member 40 it is preferable to use the above-mentioned physically strengthened glass or chemically strengthened glass.
  • the thickness of the glass member 40 is, for example, 2 mm or more and 10 mm or less.
  • the image displayed on the display unit 20 in the daytime outdoor environment can be seen by more than one in four people. is visible.
  • ⁇ Third embodiment> an example is shown in which the display unit 20 is attached to the inner surface of double-glazed glass instead of laminated glass. Note that in the third embodiment, descriptions of components that are the same as those in the already described embodiments may be omitted.
  • FIG. 11 is a cross-sectional view illustrating a vehicle window glass according to the third embodiment.
  • the vehicle window glass 3 includes a glass member 50, a display section 20, and an adhesive layer 30.
  • the glass member 50 is double-glazed glass having a glass plate 51, a glass plate 52, a spacer 53, and a hollow layer 54.
  • the glass plate 51 is a glass plate on the inside of the vehicle that becomes the inside of the vehicle when the vehicle window glass 3 is attached to the vehicle.
  • the glass plate 52 is a glass plate located on the outside of the vehicle when the vehicle window glass 3 is attached to the vehicle.
  • the glass plate 51 and the glass plate 52 are arranged facing each other with a predetermined interval provided by a spacer 53, and a hollow layer 54 is formed between the glass plate 51 and the glass plate 52.
  • an adhesive layer is formed between the spacer 53 and the glass plate 51 and between the spacer 53 and the glass plate 52.
  • the display section 20 is attached to the surface of the glass plate 51 of the glass member 50 on the hollow layer 54 side via the adhesive layer 30 .
  • the vehicle window glass 3 is preferably a window glass that takes into consideration the protection of passengers and pedestrians, which is also called safety glass.
  • both glass plates 51 and 52 are preferably made of tempered glass.
  • the glass plates 51 and/or 52 are not limited to single plates, and may be laminated glass.
  • the display section 20 may be enclosed in the laminated glass.
  • the other glass plate is preferably tempered glass.
  • the spacer 53 can be formed from, for example, a resin material containing a moisture absorbent.
  • the resin material include thermoplastic resin materials containing butyl rubber.
  • the moisture absorbent include zeolite and silica gel.
  • the hollow layer 54 may be in a vacuum, for example, or may contain air or a rare gas such as argon. Further, the hollow layer 54 may be provided with pillars that maintain the distance between the glass plates 51 and 52 in a portion that does not overlap with the display section 20.
  • the image displayed on the display unit 20 in the daytime outdoor environment can be seen by more than one in four people, for example. is visible.
  • ⁇ Fourth embodiment> an example in which a vehicle window glass further includes a film on the inside of the vehicle than the display portion, and an example of a vehicle window glass system are shown. Note that in the fourth embodiment, descriptions of components that are the same as those in the already described embodiments may be omitted.
  • FIG. 12 is a cross-sectional view illustrating a vehicle window glass according to the fourth embodiment.
  • the vehicle window glass 4 includes a glass member 10B, a display section 20, and a film 60.
  • the glass member 10B is a laminated glass including a glass plate 11, a glass plate 12, and an interlayer film 13.
  • the intermediate film 13 includes a first intermediate film 131, a second intermediate film 132, and a third intermediate film 133.
  • the display section 20 and the film 60 are enclosed in the intermediate film 13 of the glass member 10B. Specifically, the display section 20 is sandwiched between a first intermediate film 131 and a second intermediate film 132. Further, the film 60 is sandwiched between the first intermediate film 131 and the third intermediate film 133.
  • the vehicle window glass 4 is different from the vehicle window glass 1 (see FIG. 2, etc.) in that the film 60 is disposed on the vehicle-inward surface of the first interlayer film 131 and is covered with the third interlayer film 133. It differs from
  • a film 60 may be further included on the inside of the vehicle (on the second side) from the display section 20.
  • the film 60 is, for example, a reflective transparent screen film or a light control film.
  • a polymer dispersed liquid crystal (PDLC), a suspended particle device (SPD), or the like can be used as a light control element in the light control film, for example.
  • the vehicle window glass system 5 shown in FIG. 13 can be realized.
  • the vehicle window glass system 5 includes a vehicle window glass 4 and a projection device 70 located closer to the inside of the vehicle (on the second side) than the vehicle window glass 4.
  • the projection device 70 is, for example, a projector.
  • the light beam projected from the projection device 70 forms an image on the film 60, and is displayed so as to be visible from inside the vehicle.
  • the vehicle window glass system 6 shown in FIG. 14 can be realized.
  • the vehicle window glass system 6 includes the vehicle window glass 4, a light amount sensor 80 that acquires background brightness, and a control unit 90 that controls the light amount sensor 80 and the film 60 that is a light control film.
  • the light amount sensor 80 may be arranged near the vehicle window glass 4 or may be enclosed in the vehicle window glass 4.
  • the visible light transmittance of the light control element within the light control film is controlled by the control unit 90 based on the background brightness acquired by the light amount sensor 80.
  • the vehicle window glass 4 is divided into a plurality of regions in a plan view, and the visible light transmittance of the light control element in the light control film is changed for each region to control the visible light transmittance of the vehicle window glass 4.
  • the vehicle window glass system 6 may include a projection device 70 .
  • the vehicle window glass system 5, and the vehicle window glass system 6, by satisfying the requirements such as LED linear density obtained from Tables 4 to 7, display can be achieved in the daytime outdoor environment. For example, more than one out of four people can view the image displayed on the section 20. Further, the light beam projected from the projection device 70 onto the film 60 can be visually recognized from inside the vehicle.

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JP2020149029A (ja) * 2019-03-13 2020-09-17 アクト カンパニー，リミテッド Ｌｅｄディスプレイ装置及びその製造方法
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WO2019146634A1 (ja) * 2018-01-25 2019-08-01 Ａｇｃ株式会社 透明表示装置、及び透明表示装置を備えた合わせガラス
WO2020050062A1 (ja) * 2018-09-04 2020-03-12 Ａｇｃ株式会社 透明表示装置、透明表示装置付きガラス板、透明表示装置付き合わせガラス、および、移動体
JP2020149029A (ja) * 2019-03-13 2020-09-17 アクト カンパニー，リミテッド Ｌｅｄディスプレイ装置及びその製造方法
JP2020154184A (ja) * 2019-03-21 2020-09-24 株式会社デンソー 表示装置

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