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WO2025067762A1 - Vitre composite avec composant de commande intégré - Google Patents

Vitre composite avec composant de commande intégré Download PDF

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Publication number
WO2025067762A1
WO2025067762A1 PCT/EP2024/072988 EP2024072988W WO2025067762A1 WO 2025067762 A1 WO2025067762 A1 WO 2025067762A1 EP 2024072988 W EP2024072988 W EP 2024072988W WO 2025067762 A1 WO2025067762 A1 WO 2025067762A1
Authority
WO
WIPO (PCT)
Prior art keywords
pane
control component
electrically conductive
functional
composite pane
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/EP2024/072988
Other languages
German (de)
English (en)
Inventor
Benjamin NAGEL
Marcel Klein
Bastian KLAUSS
Xuejuan XU
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.)
Saint Gobain Sekurit France
Original Assignee
Saint Gobain Sekurit France
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 Saint Gobain Sekurit France filed Critical Saint Gobain Sekurit France
Publication of WO2025067762A1 publication Critical patent/WO2025067762A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, 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
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/1022—Metallic coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
    • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • 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
    • B32B3/26—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
    • C03C17/3673—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties specially adapted for use in heating devices for rear window of vehicles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • 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
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • 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
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/737—Dimensions, e.g. volume or area
    • B32B2307/7375—Linear, e.g. length, distance or width
    • B32B2307/7376—Thickness
    • 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
    • B32B2419/00—Buildings or parts thereof
    • 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 invention relates to a composite pane with an integrated control component, in particular an integrated temperature sensor for a heating system, as well as a method for its production and the use of such a composite pane.
  • Laminated panes made of two or more glass or polymer panes are used in a variety of ways, for example in buildings or in vehicles of all kinds, especially in motor vehicles as windscreens, rear windows, side windows and/or roof windows.
  • one or more functional coatings are being applied to individual sides of the panes, for example, with infrared-reflecting, anti-reflective, or low-E properties.
  • the use of panes with these functional coatings can, for example, improve climate comfort in vehicles and achieve energy savings.
  • WO 2010/043598 A1 Another function of functional, electrically conductive layers in vehicle windows is to keep the field of vision free of ice and fogging.
  • Electrical heating layers are known (see, for example, WO 2010/043598 A1), which cause targeted heating of the window by applying an electrical voltage.
  • the electrical contacting of the heating layer is usually achieved via bus bars that typically run along the upper and lower edges of the window.
  • the bus bars collect the current flowing through the electrical heating layer and conduct it to external leads that are connected to a voltage source.
  • the voltage applied to the electric heating layer is usually controlled by external switches, which in vehicles are integrated, for example, into a dashboard. The aim is to achieve the most direct and reliable control and regulation of the heating layer possible.
  • sensor buttons by a line or area electrode or by an arrangement of two coupled electrodes, for example as capacitive sensor buttons. Examples can be found in US 2007/0194216 A1. Surface electrodes for sensor switches can be integrated into glazing without additional components. It is known to form a sensor switch by means of separating lines in the functional layer to be controlled. For example, WO 2015/162107 discloses an electrical heating layer with an integrated sensor switch for its control. However, if a sensor switch is formed in a functional layer, this generally requires costly stripping of the functional layer using a laser beam to introduce the structuring separating lines. Furthermore, the sensor switch is limited to the design of the functional layer.
  • the object of the invention is therefore to provide a composite pane with at least one functional, electrically conductive coating, in particular an internal heating coating, into which a control component intended for this purpose, in particular for forming a heating system, can be integrated in a simple, cost-effective manner in a functionally reliable and as unobtrusive a manner as possible.
  • the composite pane with the integrated control components should be simple and cost-effective to manufacture.
  • the invention relates to a composite pane, comprising at least a first pane with an inner surface III and an outer surface IV, a second pane with an inner surface II and an outer surface I.
  • the first pane and the second pane are connected to one another over their surface by a thermoplastic intermediate layer.
  • At least one functional, electrically conductive coating preferably a heating layer, is applied to at least part of the inner surface III of the first pane and is functionally connected to a control module.
  • the control module comprises at least one control component, in particular a resistive or capacitive sensor.
  • the control component is accommodated in a recess in the thermoplastic intermediate layer and is electrically insulated from the functional, electrically conductive coating by an insulating film arranged at least in the region of the recess.
  • the inner side III of the first pane is arranged facing the inner side II of the second pane.
  • a composite pane with a control module is provided with at least one discreetly integrated control component, in particular for a heating system with an internal, electrically conductive heating layer.
  • the control component is mounted between the panes in a recess of the thermoplastic intermediate layer and is reliably electrically insulated from the heating layer by the insulation film, thus ensuring flawless and long-lasting functionality.
  • the control module can comprise additional functional components, such as all necessary connections, lines to a power supply or communicative connections to a control unit and/or additional sensors.
  • the control component is a thermistor, in particular a PTC thermistor or NTC thermistor.
  • a thermistor is an electrical resistor whose value changes reproducibly with temperature.
  • Thermistors are divided into the two groups mentioned above according to their temperature behavior: NTC thermistors, which have a negative temperature coefficient (NTC) and conduct electricity better when hot than when cold, and PTC thermistors, which have a positive temperature coefficient (PTC) and conduct electricity better when cold than when hot.
  • NTC thermistors which have a negative temperature coefficient (NTC) and conduct electricity better when hot than when cold
  • PTC thermistors which have a positive temperature coefficient (PTC) and conduct electricity better when cold than when hot.
  • Metals, semiconducting ceramic materials, such as metal oxides or silicon, are used as resistance materials.
  • the thermistor can, for example, be a small, wired chip for power supply and functional connection to a control unit, for example with a size (LxWxH) of approximately 1 mm x 0.5 mm x 0.5 mm.
  • This size is given only as an example and is not to be understood as limiting.
  • the size can be adapted to use in the selected intermediate layer of the laminated pane. This enables the integration of the thermistor with its functionality into the laminated pane according to the invention, namely into a recess in the intermediate layer, without this control component being destroyed during production or the (glass) panes breaking, for example, during lamination.
  • the recess of the thermoplastic intermediate layer has a volume that is at least 10% larger, preferably at least 15% larger, and in particular at least 20% larger than the volume of the control component.
  • the control component can also be referred to as a sensor element or switching element.
  • the thermistors preferably used are usually almost wear-free, which ensures the reliability of the temperature measurement and/or the switching function by the thermistor for the long-term operation of a heating system with the heating layer.
  • Thermistors are commercially available in suitable shapes, functions, and sizes.
  • the thermistor can, for example, act as a temperature-dependent, self-switching switch in the control module to connect or disconnect the heating layer from the power supply. If a predefined limit temperature is exceeded, the thermistor can disconnect the heating layer from the voltage source and/or connect it if the temperature falls below a further limit temperature other than a lower limit temperature.
  • the thermistor can therefore, for example, prevent impending overheating of the heating layer and any resulting delamination of the thermoplastic intermediate layer of the composite pane according to the invention, or automate the power supply to the heating layer if, for example, the outside temperature falls below 0 °C.
  • the control component for example a thermistor, is designed not to directly connect or disconnect the electrically conductive layer, in particular the heating layer, to a voltage source, but is functionally coupled (connected) to a power connection, which is connected, for example, to a control unit or the on-board computer of a vehicle that controls or regulates the heating of the window pane.
  • Activation or deactivation of the electrically operable heating layer can occur when the control module is set to a corresponding switching temperature or limit temperature. This also prevents unnecessary heating, for example of a windshield, by the heating layer and optimizes the energy consumption of the motor vehicle, which is an important aspect, especially in electric vehicles.
  • Thermistors are proven, commercially available components that can advantageously be integrated cost-effectively.
  • control component is thus functionally connected to a control unit, in particular a power electronics unit, such as an on-board computer of a vehicle.
  • control component is functionally connected to one or more further, identical or different control components.
  • control component is, for example, a thermistor
  • this can be functionally connected to further sensors, for example temperature sensors of the same or different type, or for example to humidity sensors.
  • further sensors for example temperature sensors of the same or different type, or for example to humidity sensors.
  • the control component can be arranged in an edge region of the composite pane. Arranging the control component at the edge also has the advantage that the wiring and signal paths can be shortened.
  • the edge is preferably understood to be an area of 1 cm to 25 cm from the edges of the pane.
  • the edge is understood to be an area outside the legally defined central field of vision for a driver.
  • the control components do not necessarily have to be arranged in the area of a conventional masking print (black print), since they can advantageously be integrated very discreetly and visually barely perceptibly into the laminated pane.
  • the control component can be arranged approximately 20 mm from the edge of a masking area towards the center of the pane.
  • the insulation film is a film containing polyethylene terephthalate (PET), preferably a film made of PET.
  • PET polyethylene terephthalate
  • This material has the advantage that it is commercially available as a film in various layer thicknesses and has already proven itself in use in composite panes, particularly in vehicle windows. This is primarily due to the advantageous material properties, in particular transparency, adhesive properties, and compatibility with the materials commonly used for the production of composite panes, particularly vehicle windows, such as glass and polyvinyl butyral films (PVB).
  • the insulation film of the composite pane according to the invention preferably has a thickness of greater than 20 ⁇ m, particularly preferably from 20 ⁇ m to 100 ⁇ m, in particular from 25 ⁇ m to 60 ⁇ m, for example a thickness of 50 ⁇ m. These layer thicknesses are sufficient to reliably ensure the electrical insulation of the control components from the electrically conductive coating. The thinner the insulation film, the more inconspicuously it can be integrated into the composite pane.
  • the insulation film, for example PET film can also be self-adhesive, which simplifies positioning and fixing in the desired arrangement in the region of the recess of the thermoplastic intermediate layer during production.
  • the insulation film is preferably semi-transparent, especially transparent. This makes the area in which the control component is arranged less visually conspicuous.
  • Transparent in the context of the invention means a light transmission TL (according to ISO 9050:2003) of at least 50%, preferably at least 60%, and especially preferably at least 70%.
  • Semitransparent in the context of the invention means a light transmission TL of at most 50%, preferably at most 30%, and particularly preferably at most 10%.
  • Transparent adhesive tape for example, can also be used as an insulation film.
  • OCA Transparent adhesive tape
  • a functional coating used as an electrical heating layer can, in principle, be any coating that can be electrically contacted. If the pane according to the invention is intended to allow visibility, as is the case, for example, with panes in window areas, the functional coating is preferably transparent. Particularly preferably, the functional electrically conductive coating is transparent. This is particularly important for laminated panes where particularly high transparency is required to meet requirements, such as windshields.
  • Electrically conductive, functional coatings according to the invention are known, for example, from DE 20 2008 017 611 U1, EP 0 847 965 B1 or WO 2012/052315 A1. They typically contain one or more, for example two, three or four or even more, electrically conductive, functional layers.
  • the functional layers preferably contain at least one metal, for example silver, gold, copper, nickel and/or chromium, or a metal alloy.
  • the functional layers particularly preferably contain at least 90 wt. % of the metal, in particular at least 99.9 wt. % of the metal.
  • the functional layers can consist of the metal or the metal alloy.
  • the functional layers particularly preferably contain silver or a silver-containing alloy.
  • Such functional layers have particularly advantageous electrical conductivity with simultaneous high transmission in the visible spectral range.
  • the thickness of a functional layer is preferably from 5 nm to 50 nm, particularly preferably from 8 nm to 25 nm. In this range for the thickness of the functional layer, an advantageously high transmission in the visible spectral range and a particularly advantageous electrical conductivity are achieved.
  • the functional electrically conductive coating is preferably a heating layer and, in particularly preferred embodiments, contains at least one silver layer (Ag).
  • the functional coating is a layer or a layer structure of several individual layers with a total thickness of less than or equal to 2 pm, particularly preferably less than or equal to 1 pm, for example less than or equal to 0.5 pm, such as less than 400 nm or between 350 and 250 nm.
  • bus bars intended for connection to a voltage source are connected to the functional electrically conductive coating in such a way that a current path for a heating current is formed between the bus bars.
  • An advantageous functional coating according to the invention, used as an electrical heating layer, has, for example, a surface resistance of 0.4 ohms/square to 10 ohms/square.
  • the functional coating according to the invention has a surface resistance of 0.5 ohms/square to 1 ohm/square. Coatings with such surface resistances are particularly suitable for heating vehicle windows with typical on-board voltages of 12 V to 48 volts or in electric vehicles with typical on-board voltages of up to 500 V.
  • the busbar according to the invention is formed as a printed and fired-in conductive structure.
  • the printed busbar preferably contains at least one metal, a metal alloy, a metal compound, and/or carbon, particularly preferably a precious metal, and in particular silver.
  • the printing paste preferably contains metallic particles, metal particles, and/or carbon, and in particular precious metal particles such as silver particles.
  • Electrical conductivity is preferably achieved by the electrically conductive particles.
  • the particles can be contained in an organic and/or inorganic matrix such as pastes or inks, preferably as a printing paste with glass frits.
  • the width of the first and second bus bars is preferably from 2 mm to 30 mm, particularly preferably from 4 mm to 20 mm, and in particular from 10 mm to 20 mm.
  • Thinner bus bars lead to excessive electrical resistance and thus to excessive heating of the bus bars during operation.
  • thinner Bus bars are difficult to produce using printing techniques such as screen printing.
  • Thicker bus bars require an undesirably high amount of material.
  • They lead to an excessive and unsightly restriction of the view through the pane.
  • the length of the bus bar depends on the extent of the electrical heating layer. For a bus bar, which is typically designed in the form of a strip, the longer of its dimensions is referred to as the length and the shorter of its dimensions as the width.
  • the third or additional bus bars can also be thinner, preferably from 0.6 mm to 5 mm.
  • the layer thickness of the printed busbar is preferably from 5 pm to 40 pm, particularly preferably from 8 pm to 20 pm, and most preferably from 8 pm to 12 pm.
  • Printed busbars with these thicknesses are technically easy to implement and have advantageous current-carrying capacity.
  • the specific resistance pa of the bus bars is preferably between 0.8 pOhm cm and 7.0 pOhm cm, and particularly preferably between 1.0 pOhm cm and 2.5 pOhm cm. Bus bars with specific resistances in this range are technically simple to implement and exhibit advantageous current-carrying capacity.
  • the electrical supply line to the functional, electrically conductive coating can also be designed as a flexible foil conductor (flat conductor, ribbon conductor).
  • a flexible foil conductor refers to an electrical conductor whose width is significantly greater than its thickness.
  • a foil conductor is, for example, a strip or ribbon containing or consisting of copper, tinned copper, aluminum, silver, gold, or alloys thereof.
  • the foil conductor has, for example, a width of 2 mm to 16 mm and a thickness of 0.03 mm to 0.1 mm.
  • the foil conductor can have an insulating, preferably polymeric, sheath, for example based on polyimide.
  • Foil conductors suitable for contacting electrically conductive coatings in wafers have a total thickness of only 0.3 mm, for example. Such thin foil conductors can be easily embedded between the individual wafers in the thermoplastic intermediate layer.
  • a foil conductor ribbon can contain several electrically insulated, conductive layers.
  • thin metal wires can be used as electrical leads for the electrically conductive functional coating.
  • the metal wires contain in particular copper, tungsten, gold, silver, or aluminum, or alloys of at least two of these metals.
  • the alloys may also contain molybdenum, rhenium, osmium, iridium, palladium, or platinum.
  • the functional, electrically conductive heating layer can extend over the entire surface of the first pane and/or the second pane, preferably only the first pane.
  • the functional coating can also extend over only a portion of the surface of the first pane and/or the second pane, preferably only the first pane.
  • the functional coating preferably extends over at least 50%, particularly preferably over at least 70%, and most particularly preferably over at least 90% of the inner surface of the first pane.
  • the functional coating can have one or more uncoated zones in the inner region and/or the outer region. These zones can be permeable to electromagnetic radiation and are known, for example, as data transmission windows or communication windows.
  • the functional coating can be applied to the surface of the substrate and the masking coating by means of vacuum-based vapor deposition.
  • the functional coating is applied by means of physical vapor deposition (PVD) or chemical vapor deposition (CVD), in particular by means of physical vapor deposition.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • Sputtering in particular magnetic field-assisted sputtering (magnetron sputtering)
  • magnetic sputtering has proven particularly suitable for producing thin films on glass substrates.
  • other types of physical vapor deposition can also be used, for example, thermal evaporation (evaporation), electron beam evaporation, laser beam evaporation,
  • Arc evaporation or molecular beam epitaxy Arc evaporation or molecular beam epitaxy.
  • Preferred CVD processes are plasma-enhanced chemical vapor deposition (PECVD) and atomic layer deposition (ALD).
  • adhesion promoter layers can also be applied beneath the actual functional coating, for example adhesion promoter layers to improve the adhesion of the functional coating to the substrate, adjustment or smoothing layers to influence the morphology of the functional coating, or blocker layers to prevent alkali diffusion from the glass substrate into the To prevent functional layer deterioration.
  • Suitable adhesion promoter layers are based, for example, on silicon nitride (SiN) or oxide (SiO) or aluminum nitride (AIN) or oxide (AlO)
  • suitable adaptation layers are based, for example, on SnZnO or zinc oxide (ZnO)
  • suitable blocker layers are based, for example, on NiCr or SiN.
  • the invention further relates to a method for producing a composite pane as described above in various embodiments, comprising the steps
  • thermoplastic film with at least one recess for forming an intermediate layer
  • a composite pane with an internal heating coating can be provided in which a control component intended for this purpose, in particular for forming a heating system, can be integrated in a simple, cost-effective manner in a functionally reliable and as unobtrusive a manner as possible.
  • the composite pane with the integrated control components can be manufactured simply and cost-effectively. This is particularly possible with the current mechanical and process engineering approach for the production of composite panes without the need for complex adjustments.
  • the functional electrically conductive coating is applied to the inner surface (III) of the first pane and/or to the inner surface (II) of the second pane by means of physical vapor deposition (PVD) or chemical vapor deposition (CVD).
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • step B) the at least one recess is introduced into the thermoplastic film by cutting or punching.
  • a recess can also be formed by forming the thermoplastic film in multiple pieces, omitting the partial area for the recess.
  • control module in particular the control component, is functionally connected to one or more other, identical or different control components, for example, sensors and/or a control unit. If multiple control components are provided, each of them is preferably assigned a recess in the thermoplastic intermediate layer, and each of these is reliably electrically insulated from electrically conductive coatings on the inner surfaces of the panes by an insulating film.
  • the invention also relates to the use of the composite pane according to the invention in buildings or in means of transport for traffic on land, in the air or on water, in particular in motor vehicles, for example as a windscreen, rear window, side windows and/or roof window.
  • the first pane and/or the second pane preferably contain glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride, and/or mixtures thereof.
  • the first pane and/or the second pane are preferably transparent, particularly for use as a windshield or rear window of a vehicle or for other applications where high light transmission is desired.
  • the thickness of the individual panes can vary widely and can thus be perfectly adapted to the requirements of the individual case. Standard thicknesses of 1.0 mm to 25 mm are preferred, with 1.4 mm to 2.5 mm being preferred for automotive glass.
  • the composite pane can have any three-dimensional shape.
  • the three-dimensional shape has no shadow zones, allowing it to be coated, for example, by cathode sputtering.
  • the panes are preferably planar or, as in the case of vehicle windows, slightly or strongly curved in one or more directions of space.
  • the panes can be colorless or colored.
  • the panes are joined together to form the composite pane by at least one intermediate layer.
  • the intermediate layer preferably contains at least one thermoplastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and/or polyethylene terephthalate (PET).
  • the thermoplastic intermediate layer can also contain, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resins, acrylates, fluorinated ethylene propylene, polyvinyl fluoride and/or ethylene tetrafluoroethylene, or copolymers or mixtures thereof.
  • Typical layer thicknesses for commercially available PVB films are, for example, 0.76 mm or 1.14 mm, although this is not limiting for the invention.
  • thermoplastic intermediate layer of the composite pane a recess is provided into which the control component, in particular a Thermistor, can be accommodated and positioned.
  • This recess can be created, for example, by punching or cutting into the thermoplastic film from which the intermediate layer is formed during lamination.
  • the thermoplastic film can also be formed in multiple pieces, leaving the position for the control component free, and form the intermediate layer with the recess.
  • Figure 1 is a cross-sectional view of an embodiment of the composite pane according to the invention.
  • Figure 2 is a plan view of the composite pane of Fig. 1,
  • Figure 3 is a cross-sectional view of another embodiment of the composite pane according to the invention.
  • Figure 1 shows a cross-sectional view of an embodiment of the composite pane 100 according to the invention, which comprises a first pane 1 with an inner surface III and an outer surface IV, a second pane 2 with an inner surface II and an outer surface I, which are joined to one another by a thermoplastic intermediate layer 4.
  • a functional, electrically conductive coating 3, which is preferably a heating layer, is applied to the inner surface III of the first pane 1.
  • the thermoplastic intermediate layer 4 accommodates a control component 6, which is electrically insulated from the functional electrically conductive coating 3 by an insulating film 5 arranged at least in the region of the recess 7.
  • the thermoplastic intermediate layer 4 can be formed in multiple layers from several thermoplastic films arranged one above the other, into which the recess 7 has been precisely fitted.
  • the recess 7 can be formed, for example, by punching or cutting.
  • the intermediate layer 4 can also be formed in multiple pieces from film parts, omitting the position for the control component 6.
  • the control component 6 is preferably a capacitive or resistive sensor, in particular a thermistor with electrical connections 8 (wired), which is functionally connected to the functional electrically conductive coating 3.
  • a composite pane 100 is thus provided with an inconspicuously integrated control component 6, in particular for a heating system with an internal, electrically conductive coating 3 as the heating layer.
  • the control component 6 is securely and non-destructively integrated and mounted between the first pane 1 and the second pane 2 in a recess 7 of the thermoplastic intermediate layer 4 and is reliably electrically insulated from the coating 3 by the insulating film 5, thus ensuring flawless and long-lasting functionality.
  • the insulating film 5 is designed with an overlap to dimension the recess 7 in order to ensure the electrical insulation of the control components 6 from the electrically conductive coating 3 even in the event of a slight offset during production.
  • the insulating film 5 can be a PET film, for example.
  • the electrical connections of the functional coating 3 and any other cable and signal paths that may be present to a control unit, for example to the on-board computer of a vehicle, are not shown. These can be designed in the usual way.
  • FIG. 2 shows a plan view of the composite pane 100 of Figure 1 in an indicated trapezoidal shape of a windshield.
  • the windshield has a first side edge S1, a second side edge S2, a roof edge D and an engine edge M, as well as a central viewing area Z for a driver, which is defined by law.
  • the designations are made solely with regard to an installation position in a vehicle.
  • the thermistor as the control component 6 is arranged in an edge region R of the composite pane 100 outside the central viewing area Z and also outside a
  • the control component 6 is arranged in the masking area 9. This enables rapid detection of temperatures and/or other measurement data, and the signal and line paths are not too long. If desired or necessary, the control component 6 can also be arranged at least partially in the masking area 9.
  • Figure 3 shows a cross-sectional view of a further embodiment of the composite pane 100 according to the invention.
  • a functional electrically conductive coating 3a is provided on the inner surface II of the second pane 2, against which the control component 6, for example the thermistor, is electrically insulated with an additional insulation film 5a.
  • Control component e.g. thermistor
  • Masking area e.g. black print

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une vitre composite (100) comprenant au moins : - une première vitre (1) avec une surface interne (III) et une surface externe (IV), - une seconde vitre (2) avec une surface interne (II) et une surface externe (I), - une couche intermédiaire thermoplastique (4) qui relie la surface interne (III) de la première vitre (1) et la surface interne (II) de la seconde vitre (2) sur leurs surfaces, - au moins un revêtement fonctionnel électriquement conducteur (3) qui est appliqué sur au moins une section de la surface interne (III) de la première vitre (1) et/ou au moins une section de la surface interne (II) de la seconde vitre (2), et - un module de commande qui est fonctionnellement relié au revêtement fonctionnel électriquement conducteur (3) et comprend au moins un composant de commande (6). L'invention est caractérisée en ce que le composant de commande (6) est reçu dans un évidement (7) dans la couche intermédiaire thermoplastique (4) et est électriquement isolé du revêtement fonctionnel électriquement conducteur (3) par un film isolant (5) disposé au moins dans la région de l'évidement (7).
PCT/EP2024/072988 2023-09-27 2024-08-15 Vitre composite avec composant de commande intégré Pending WO2025067762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23200067 2023-09-27
EP23200067.9 2023-09-27

Publications (1)

Publication Number Publication Date
WO2025067762A1 true WO2025067762A1 (fr) 2025-04-03

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WO (1) WO2025067762A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003024155A2 (fr) 2001-09-07 2003-03-20 Centre Luxembourgeois De Recherches Pour Le Verre Et La Ceramique S.A. (C.R.V.C.) Vitre de vehicule chauffante possedant differentes tensions dans differentes zones chauffantes
EP0847965B1 (fr) 1996-12-12 2004-10-20 Saint-Gobain Glass France Vitrage comprenant un substrat muni d'un empilement de couches minces pour la protection solaire et-ou l'isolation thermique
US20070020465A1 (en) 2005-07-20 2007-01-25 Thiel James P Heatable windshield
US20070082219A1 (en) 2003-11-28 2007-04-12 Saint-Gobain Glass France Transparent substrate which can be used alternatively or cumulatively for thermal control, electromagnetic armour and heated glazing
US20070194216A1 (en) 2006-02-21 2007-08-23 Exatec, Llc Printable controls for a window assembly
WO2010043598A1 (fr) 2008-10-15 2010-04-22 Saint-Gobain Glass France Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation
DE202008017611U1 (de) 2008-12-20 2010-04-22 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Scheibenförmiges, transparentes, elektrisch beheizbares Verbundmaterial
WO2012052315A1 (fr) 2010-10-19 2012-04-26 Saint-Gobain Glass France Vitre transparente
WO2012126708A1 (fr) * 2011-03-22 2012-09-27 Saint-Gobain Glass France Procédé et système de dégivrage d'une vitre transparente au moyen d'un dispositif de chauffage électrique
WO2015162107A1 (fr) 2014-04-24 2015-10-29 Saint-Gobain Glass France Vitre dotée d'une surface de commande éclairée et d'une fonction de chauffage
CN105578634A (zh) * 2016-02-02 2016-05-11 深圳新晶泉技术有限公司 电加热夹层玻璃
CN206024142U (zh) * 2016-02-02 2017-03-15 深圳新晶泉技术有限公司 电加热夹层玻璃

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0847965B1 (fr) 1996-12-12 2004-10-20 Saint-Gobain Glass France Vitrage comprenant un substrat muni d'un empilement de couches minces pour la protection solaire et-ou l'isolation thermique
WO2003024155A2 (fr) 2001-09-07 2003-03-20 Centre Luxembourgeois De Recherches Pour Le Verre Et La Ceramique S.A. (C.R.V.C.) Vitre de vehicule chauffante possedant differentes tensions dans differentes zones chauffantes
US20070082219A1 (en) 2003-11-28 2007-04-12 Saint-Gobain Glass France Transparent substrate which can be used alternatively or cumulatively for thermal control, electromagnetic armour and heated glazing
US20070020465A1 (en) 2005-07-20 2007-01-25 Thiel James P Heatable windshield
US20070194216A1 (en) 2006-02-21 2007-08-23 Exatec, Llc Printable controls for a window assembly
WO2010043598A1 (fr) 2008-10-15 2010-04-22 Saint-Gobain Glass France Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation
DE202008017611U1 (de) 2008-12-20 2010-04-22 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Scheibenförmiges, transparentes, elektrisch beheizbares Verbundmaterial
WO2012052315A1 (fr) 2010-10-19 2012-04-26 Saint-Gobain Glass France Vitre transparente
WO2012126708A1 (fr) * 2011-03-22 2012-09-27 Saint-Gobain Glass France Procédé et système de dégivrage d'une vitre transparente au moyen d'un dispositif de chauffage électrique
WO2015162107A1 (fr) 2014-04-24 2015-10-29 Saint-Gobain Glass France Vitre dotée d'une surface de commande éclairée et d'une fonction de chauffage
CN105578634A (zh) * 2016-02-02 2016-05-11 深圳新晶泉技术有限公司 电加热夹层玻璃
CN206024142U (zh) * 2016-02-02 2017-03-15 深圳新晶泉技术有限公司 电加热夹层玻璃

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