WO2021139951A1 - Ensemble vitre de véhicule à électrode de détection capacitive - Google Patents

Ensemble vitre de véhicule à électrode de détection capacitive Download PDF

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Publication number
WO2021139951A1
WO2021139951A1 PCT/EP2020/085214 EP2020085214W WO2021139951A1 WO 2021139951 A1 WO2021139951 A1 WO 2021139951A1 EP 2020085214 W EP2020085214 W EP 2020085214W WO 2021139951 A1 WO2021139951 A1 WO 2021139951A1
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WO
WIPO (PCT)
Prior art keywords
vehicle window
electrically conductive
sensor electrode
protective layer
window arrangement
Prior art date
Application number
PCT/EP2020/085214
Other languages
German (de)
English (en)
Inventor
Francois HERMANGE
Clément BOTTOIS
Rayan Hammoud
Patrick Weber
Original Assignee
Saint-Gobain Glass 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 Glass France filed Critical Saint-Gobain Glass France
Priority to CN202080004731.7A priority Critical patent/CN113365814A/zh
Publication of WO2021139951A1 publication Critical patent/WO2021139951A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/085—Layered products comprising a layer of metal comprising metal 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 comprising polyolefins
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/088—Layered products comprising a layer of metal comprising metal 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 comprising polyamides
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
    • B32B17/10192—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions patterned in the form of columns or grids
    • 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
    • B32B17/10376—Laminated safety glass or glazing containing metal wires
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/960765—Details of shielding arrangements

Definitions

  • the present invention relates to a vehicle window arrangement with at least one capacitive sensor electrode.
  • capacitive switching areas can be formed by a sensor electrode or by an arrangement of two coupled sensor electrode areas such as a first sub-area and a surrounding area. If an object approaches the sensor electrode, the capacitance of the sensor electrode to earth or the capacitance of the capacitor formed by the two coupled sensor electrode areas changes.
  • sensor electrodes are known, for example, from US 2016/0313587 A1, US 6654070 B1, US 2010/179725 A1, WO 2015/086599 A1, WO 2016/116372 A1, US 6654 070 B1 and US 2006/275599 A1.
  • the sensor electrode is to be connected to the capacitive sensor electronics via a connection cable.
  • Ribbon cables are currently used for this purpose in composite panes with laminated sensor electrodes. Such a ribbon cable is typically led out of the space between the two laminated individual disks.
  • the ribbon cable is sensitive to external electromagnetic influences, for example when the ribbon cable comes into contact with the metallic vehicle body. This can trigger an unintentional switching process or capacitive variables can be coupled in in an undesired manner, which can lead to incorrect evaluations. For example, in the case of proximity sensors, the distance can change.
  • WO 99/05008 A1 discloses a passenger detection system consisting of electrodes in different configurations.
  • the electrodes may be positioned near an airbag door, with each electrode providing a signal corresponding to the proximity of the passenger.
  • the electrodes include a comparator for comparing the signals used.
  • the electrodes can be formed in one piece on a vehicle window.
  • US 2014/0060921 A1 discloses a flat conductor connection element for an antenna structure which is arranged on a pane.
  • the connection element comprises a flat conductor with a base layer, a conductor track, a first dielectric layer, a shield, which is arranged in sections above the first dielectric layer. A second dielectric layer is arranged above the shield.
  • the flat conductor runs outwards over the edge of the pane, the shielding being capacitively coupled to a reference ground via a metallic frame.
  • the vehicle window arrangement comprises a vehicle window and at least one sensor electrode which is suitably designed to detect a capacitive change and which is attached to the vehicle window or laminated into the vehicle window.
  • the vehicle window arrangement also includes capacitive sensor electronics for electrical detection of touching the sensor electrode or approaching the sensor electrode, as well as a connecting cable that electrically connects the sensor electrode and the capacitive sensor electronics with one another.
  • the sensor electrode serves as a touch-sensitive control button for switching or controlling a functional element, for example an electro-optical functional element that is integrated into the vehicle window.
  • the sensor electrode can generate an electric field which is disturbed by a human body part, such as a finger or a hand, so that a touch of the sensor electrode or an approach to the sensor electrode can be detected.
  • Electro-optical functional elements the luminosity of which can be controlled by an electrical voltage signal, preferably contain one or more OLED layer systems (OLED, organic light emitting diode) or display films, particularly preferably OLED display films, as the electro-optical functional layer and very particularly preferably transparent OLED display films.
  • OLED layer systems OLED, organic light emitting diode
  • display films particularly preferably OLED display films, as the electro-optical functional layer and very particularly preferably transparent OLED display films.
  • Sensor electrodes according to the invention can be designed in one or more parts and, for example, consist of a first sub-area of the sensor electrode and a second sub-area.
  • the second sub-area can also be understood as a surrounding area or a mass area.
  • the sensor electrode is formed from a printed and burnt-in electrically conductive paste, preferably a silver-containing screen printing paste.
  • the printed and baked electrically conductive paste advantageously has a thickness of 3 pm to 20 pm and a sheet resistance of 0.001 ohm / square to 0.03 ohm / square, preferably from 0.002 ohm / square to 0.018 ohm / square.
  • Such sensor electrodes are easy to integrate in the industrial manufacturing process and can be manufactured inexpensively.
  • the sensor electrode consists of an electrically conductive structure which is electrically isolated from the surrounding layer by an electrically conductive layer by a coating-free separation area, in particular a coating-free separation line.
  • the width of the dividing lines is from 30 ⁇ m to 200 ⁇ m and preferably from 70 ⁇ m to 140 ⁇ m. Such thin dividing lines allow a reliable and sufficiently high electrical insulation and at the same time do not interfere with the view through the composite pane or only slightly.
  • the electrically conductive layer is preferably transparent.
  • the electrically conductive layer can be arranged directly on an inside surface of the vehicle window or an intermediate layer or on an additional carrier film, preferably a transparent carrier film.
  • polymeric carrier films made of, for example, polyimide or polyethylene terephthalate (PET) are preferred.
  • PET polyethylene terephthalate
  • Suitable electrically conductive layers are known, for example, from DE 20 2008 017611 U1, EP 0 847 965 B1 or WO2012 / 052315 A1. They typically contain one or more, for example two, three or four electrically conductive, functional nelle 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% by weight of the metal, in particular at least 99.9% by weight of the metal.
  • the functional layers can consist of the metal or the metal alloy.
  • the functional layers particularly preferably contain silver or an alloy containing silver.
  • Such functional layers have a 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.
  • This layer structure is generally obtained through a sequence of deposition processes that are carried out using a vacuum process such as vacuum evaporation or PVD (physical vapor deposition) processes such as magnetic field-supported cathode sputtering or CVD (chemical vapor deposition) processes.
  • a vacuum process such as vacuum evaporation or PVD (physical vapor deposition) processes
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • ITO indium tin oxide
  • Sn0 2 : F fluorine-doped tin oxide
  • ZnO: Al aluminum-doped zinc oxide
  • the electrically conductive layer can in principle be any coating that can be electrically contacted. If the composite pane according to the invention is intended to enable transparency, as is the case, for example, with panes in the window area, the electrically conductive layer is preferably transparent. In an advantageous embodiment, the electrically conductive layer is a layer or a layer structure of several individual layers with a total thickness of less than or equal to 2 ⁇ m, particularly preferably less than or equal to 1 ⁇ m.
  • An advantageous transparent electrically conductive layer according to the invention has a surface resistance of 0.4 ohms / square to 200 ohms / square.
  • the electrically conductive layer according to the invention has a sheet resistance of 0.5 ohm / square to 20 ohm / square.
  • the electrically conductive layer preferably contains a transparent, electrically conductive coating.
  • Transparent here means permeable to electromagnetic radiation with a wavelength of 300 nm to 1,300 nm and, in particular, to visible light.
  • the electrically conductive layer can also be significantly thicker than in the case of be designed transparent electrically conductive layers. Such thicker layers can have a significantly low surface resistance.
  • sensor electrodes made of the aforementioned configuration forms such as printed paste, electrically conductive film or wires and separated electrically conductive layer, can be combined with one another.
  • the first sub-area can consist of an electrically conductive film, for example, and the second sub-area or surrounding area can consist of a printed paste, etc.
  • the sensor electrode or at least the first partial area of the sensor electrode has an area of 1 cm 2 to 200 cm 2 , particularly preferably 1 cm 2 to 9 cm 2 .
  • the length of the contact area is preferably from 1 cm to 14 cm and particularly preferably from 1 cm to 3 cm.
  • the maximum width of the contact area is preferred from 1 cm to 14 cm and particularly preferably from 1 cm to 3 cm.
  • the sensor electrode or at least the first partial area of the sensor electrode can in principle have any shape. Circular, elliptical or teardrop-shaped configurations are particularly suitable. Alternatively, angular shapes are possible, for example triangles, squares, rectangles, trapezoids or other quadrangles or polygons of a higher order. In general, it is particularly advantageous if any corners are rounded.
  • the sensor electrode can also contain a line-shaped element, for example a wire, which is designed in the form of a spiral, a comb or a grid and whose external extension enlarges the capacitive coupling surface of the sensor electrode.
  • the capacitance of the sensor electrode is measured by the capacitive sensor electronics.
  • the capacitance of the sensor electrode changes with respect to earth when a body (for example a human body) comes near it or, for example, touches an insulating layer over the sensor electrode.
  • the change in capacitance is measured by the sensor electronics and a switching signal is triggered when a threshold value is exceeded.
  • the sensor electrode is made in several parts and preferably in two parts. That is to say, the sensor electrode has a first partial area and a surrounding area. Both the first sub-area and the surrounding area can be connected to the capacitive sensor electronics.
  • the first sub-area and the surrounding area form two electrodes which are capacitively coupled to one another.
  • the capacitance of the capacitor formed by the electrodes changes when a body approaches, for example a human body part.
  • the change in capacitance is measured by the sensor electronics and a switching signal is triggered when a threshold value is exceeded.
  • touch is understood to mean any interaction with the switching area that leads to a measurable change in the measurement signal, that is to say in the capacitance in this case.
  • the output switching signals can be arbitrary and adapted to the requirements of the respective use.
  • the switching signal can have a positive voltage, for example 12 V, mean, no switching signal mean, for example, 0 V and another switching signal mean, for example + 6V.
  • the switching signals can also correspond to the common voltages CAN_High and CAN_Low on a CAN bus and change by a voltage value in between.
  • the switching signal can also be pulsed and / or digitally coded.
  • the sensor electrode is connected to one or more flat conductors and the flat conductor is led out of the pane.
  • the integrated disk arrangement can then be connected particularly easily at the point of use with a voltage source and a signal line that evaluates the switching signal of the sensor circuit, for example in a vehicle via a CAN bus.
  • the first pane and / or second pane preferably contain glass, particularly preferably flat glass, very particularly preferably float glass, such as soda-lime glass, borosilicate glass or quartz 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 second pane are preferably transparent, in particular for the use of the panes as a windshield or rear window of a vehicle or other uses in which a high level of light transmission is desired.
  • Transparent in the context of the invention is then understood to mean a pane which has a transmission in the visible spectral range of greater than 70%.
  • the transmission can also be much lower, for example greater than 5%.
  • the thickness of the first pane and / or the second pane can vary widely and can thus be excellently adapted to the requirements of the individual case.
  • Standard thicknesses are preferred from 1.0 mm to 25 mm, preferably from 1.4 mm to 2.5 mm for vehicle glass and preferably from 4 mm to 25 mm for furniture, appliances and buildings, in particular for electric radiators, are used.
  • the size of the disks can vary widely and depends on the size of the use according to the invention.
  • the first pane and the second pane have areas of 200 cm 2 to 20 m 2, which are common in vehicle construction and architecture, for example.
  • the first pane and the second pane are connected to one another by at least one intermediate layer, preferably by a first and a second intermediate layer.
  • the intermediate layer is preferably transparent.
  • the intermediate layer preferably contains at least one plastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and / or polyethylene terephthalate (PET).
  • the intermediate layer can also, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resins, acrylates, fluorinated ethylene propylenes, polyvinyl fluoride and / or ethylene -Tetrafluoroethylene, or copolymers or mixtures thereof.
  • the intermediate layer can be formed by one or also by several films arranged one above the other, the thickness of a film preferably being from 0.025 mm to 1 mm, typically 0.38 mm or 0.76 mm.
  • the electrical supply line that connects the flat electrodes and / or the sensor electrode to external control electronics or sensor electronics is preferably designed as a foil conductor or a flexible foil conductor (flat conductor, ribbon conductor).
  • Foil conductor is understood to mean an electrical conductor whose width is significantly greater than its thickness.
  • a foil conductor is, for example, a strip or tape containing or consisting of copper, tin-plated 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 film conductor can have an insulating, preferably polymeric sheathing, for example based on polyimide.
  • Foil conductors which are suitable for contacting electrically conductive coatings in panes, only have a total thickness of, for example, 0.3 mm. Such thin film conductors can be embedded between the individual disks in the thermoplastic intermediate layer without difficulty.
  • a foil conductor strip can contain several conductive layers that are electrically isolated from one another.
  • thin metal wires can also be used as an electrical lead.
  • the metal wires contain in particular copper, tungsten, gold, silver or aluminum or alloys at least two of these metals.
  • the alloys can also contain molybdenum, rhenium, osmium, iridium, palladium or platinum.
  • connection area of an electrically conductive layer on a carrier film and the electrical supply line is preferably made using electrically conductive adhesives, which enable a secure and permanent electrical line connection between the connection area and the supply line.
  • electrical line connection can also be made by clamping, since the clamping connection is fixed by the lamination process so that it does not slip.
  • the supply line can also be printed onto the connection area, for example by means of an electrically conductive printing paste that contains metal and in particular contains silver.
  • the stripping of individual dividing lines in the electrically conductive layer is preferably carried out by a laser beam.
  • Methods for structuring thin metal films are, for example, from EP 2 200 097 A1 or EP 2 139 049 A1 are known.
  • the width of the stripping is preferably 10 pm to 1000 pm, particularly preferably 30 pm to 200 pm and in particular 70 pm to 140 pm. In this area, a particularly clean and residue-free stripping takes place using the laser beam.
  • the stripping by means of a laser beam is particularly advantageous, since the stripped lines are optically very inconspicuous and only slightly impair the appearance and transparency.
  • the stripping of a line with a width that is wider than the width of a laser cut is carried out by repeatedly tracing the line with the laser beam. The process duration and the process costs therefore increase as the line width increases.
  • the stripping can be carried out by mechanical removal as well as by chemical or physical etching.
  • the connecting cable is partially laminated into a vehicle window constructed as a composite window.
  • a part of the connecting cable arranged outside the vehicle window advantageously has the electrically conductive protective layer. This advantageously enables existing vehicle window arrangements to be retrofitted. In addition, material and costs can be saved.
  • the laminated part of the connecting cable is typically less susceptible to malfunctions, so that a good improvement can already be achieved by this measure compared to conventional vehicle window arrangements.
  • the conductive protective layer is connected to a ground potential.
  • the second partial area of the electrically conductive structure is preferably connected to the ground potential (active shielding).
  • a ground plane is placed in the vicinity of the sensor electrode (passive shielding).
  • the electrically conductive protective layer is preferably connected to a vehicle ground or to a ground potential provided by the capacitive sensor electronics.
  • the ground potential is particularly preferably provided by the vehicle window. It is also possible that the electrically conductive protective layer is connected to an interference suppression / compensation signal provided by the capacitive sensor electronics.
  • the electrically conductive protective layer in particular in the form of an aluminum or copper foil, is wrapped around the at least one signal line, thereby achieving efficient shielding against external influences.
  • the conductive protective layer is covered by an insulating material. This has the technical advantage, for example, that short circuits through the connecting cable are prevented. In addition, the underlying structures are protected from mechanical influences.
  • the conductive protective layer is glued onto the signal line. This has the technical advantage, for example, that the conductive protective layer is prevented from becoming detached.
  • the vehicle window is a windshield, a rear window or a side window.
  • the technical advantage is achieved that the vehicle window arrangement is used in particularly suitable locations.
  • FIG. 1 is a schematic view of a vehicle window arrangement
  • FIG. 4 shows a further sectional view through a connecting cable in the longitudinal direction.
  • the vehicle window arrangement 100 comprises a sensor electrode, denoted overall by the reference number 101, and capacitive sensor electronics 105, which are used for capacitive detection of a touch or approach of a human body part, such as a hand or a finger, which, for example, triggers an electrical switching function.
  • the sensor electrode 101 is electrically conductively connected to the capacitive sensor electronics 105 by a connecting cable 107, here a ribbon conductor.
  • the connecting cable 107 is led out of the area between the two laminated individual panes of the vehicle pane 113.
  • a switching or control process is activated by changes in the electromagnetic field by touching or approaching. However, switching operations can also be caused by disturbances, for example when the connecting cable 107 touches the metallic vehicle body.
  • the connecting cable 107 is protected by a metallic shield, such as a foil made of aluminum or copper, which is connected to a ground potential.
  • a connecting cable 107 is therefore arranged between the sensor electrode 101 and the capacitive sensor electronics 105, which connects the sensor electrode 101 and the capacitive sensor electronics 105 and which comprises at least one signal line 109 and a conductive protective layer 111 for electromagnetic shielding of the signal line 109.
  • the conductive protective layer 111 surrounds the signal line 109 at least partially, in particular completely dig.
  • the capacitive sensor electrode 101 reacts to a changed capacitance when touched or approached.
  • a touch control is activated by changes in the electromagnetic field by touching or approaching a human body part in the contact area 125 provided.
  • the connecting cable 107 is protected by an electrically conductive protective layer 111 surrounding the signal line 109 for electromagnetic shielding.
  • the conductive protective layer 111 can be formed by a metal foil made of aluminum or copper, which is connected to the ground potential.
  • an electrically insulating layer of insulating mate rial 119 can be arranged, such as polyvinyl or polyamide. Another electrically insulating layer of insulating material 119 is located between the electromagnetic shield 111 and the signal line 109, so that there is no electrical contact between the signal line 109 and the electromagnetic shield. In this structure, too, the connection cable 107 is protected from electromagnetic interference, so that no unintentional switching can be triggered by touching or contacting the signal line 109 with metal.
  • a conductive protective layer 111-2 is glued onto the insulating material 119-2 by means of the adhesive layer 121-5 on the other side.
  • Another insulating material 119-4 is glued to the conductive protective layer 111-2 by means of the adhesive layer 121-4, so that the conductive protective layer 111-1 is insulated from the outside.
  • the conductive protective layers 111-1 and 111-2 can be connected to a ground potential.
  • FIG. 4 shows a further embodiment of the connecting cable 107 in a sectional view in the longitudinal direction.
  • the protective layers 111-1 and 111-2 are glued to the signal conductor 109 by means of electrically insulating adhesive layers 121-1 and 121-2, respectively.
  • the conductive protective layers 111-1 and 111-2 are electrically insulated from the outside with layers of insulating material 119-1 and 119-2. In this construction, the layers of insulating material 119-1 and 119-2 shown in FIG. 3 are not present.

Landscapes

  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

La présente invention concerne un ensemble vitre de véhicule (100) comprenant une vitre de véhicule (113), au moins une électrode de détection (101), une électronique de détection capacitive (105) pour la détection électrique d'un contact ou d'une approche de l'électrode de détection (101), un câble de raccordement (107) qui relie électriquement l'électrode de détection (101) et l'électronique de détection capacitive (105), ledit câble de raccordement comprenant au moins une ligne de transmission de signal (109) et une couche de protection (111) électroconductrice servant au blindage électromagnétique de ladite au moins une ligne de transmission de signal (109), le câble de raccordement (107) étant au moins partiellement inséré dans la vitre de véhicule (113) par feuilletage.
PCT/EP2020/085214 2020-01-06 2020-12-09 Ensemble vitre de véhicule à électrode de détection capacitive WO2021139951A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080004731.7A CN113365814A (zh) 2020-01-06 2020-12-09 具有电容式传感器电极的车辆玻璃板装置

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Application Number Priority Date Filing Date Title
EP20150319.0 2020-01-06
EP20150319 2020-01-06

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WO2021139951A1 true WO2021139951A1 (fr) 2021-07-15

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CN (1) CN113365814A (fr)
DE (1) DE202020005725U1 (fr)
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EP0899882A1 (fr) 1997-06-26 1999-03-03 captron electronic gmbh Circuit pour un interrupteur capacitif de proximité
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EP1515211A1 (fr) 2003-09-09 2005-03-16 Delphi Technologies Inc. Commande tactile à capteurs capacitifs pour lève-vitre ou toit-ouvrant électrique
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EP2139049A1 (fr) 2008-06-25 2009-12-30 Schneeberger Holding AG Dispositif destiné à structurer un module solaire
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WO2012052315A1 (fr) 2010-10-19 2012-04-26 Saint-Gobain Glass France Vitre transparente
US20140060921A1 (en) 2011-04-06 2014-03-06 Bernhard Reul Flat-conductor connection element for an antenna structure
WO2015086599A1 (fr) 2013-12-13 2015-06-18 Agc Glass Europe Vitrage automobile
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* Cited by examiner, † Cited by third party
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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
EP0899882A1 (fr) 1997-06-26 1999-03-03 captron electronic gmbh Circuit pour un interrupteur capacitif de proximité
WO1999005008A1 (fr) 1997-07-25 1999-02-04 Advanced Safety Concepts, Inc. Detection a capacite pour vehicules
US6097345A (en) * 1998-11-03 2000-08-01 The Ohio State University Dual band antenna for vehicles
US6452514B1 (en) 1999-01-26 2002-09-17 Harald Philipp Capacitive sensor and array
US6654070B1 (en) 2001-03-23 2003-11-25 Michael Edward Rofe Interactive heads up display (IHUD)
US20060275599A1 (en) 2003-01-10 2006-12-07 Hugues Lefevre Glazing comprising electronics elements
EP1515211A1 (fr) 2003-09-09 2005-03-16 Delphi Technologies Inc. Commande tactile à capteurs capacitifs pour lève-vitre ou toit-ouvrant électrique
DE202006006192U1 (de) 2006-04-18 2006-07-27 Captron Electronic Gmbh Türbetätigungstaster
WO2008113978A1 (fr) * 2007-03-16 2008-09-25 Pilkington Group Limited Vitrage de vehicule interactif
US20100179725A1 (en) 2007-03-16 2010-07-15 Pilkington Group Limited Interactive vehicle glazing
EP2139049A1 (fr) 2008-06-25 2009-12-30 Schneeberger Holding AG Dispositif destiné à structurer un module solaire
EP2200097A1 (fr) 2008-12-16 2010-06-23 Saint-Gobain Glass France S.A. Procédé pour la fabrication d'un dispositif photovoltaïque et système de formation d'un objet
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
US20140060921A1 (en) 2011-04-06 2014-03-06 Bernhard Reul Flat-conductor connection element for an antenna structure
WO2015086599A1 (fr) 2013-12-13 2015-06-18 Agc Glass Europe Vitrage automobile
US20160313587A1 (en) 2013-12-13 2016-10-27 Agc Glass Europe Motor vehicle glazing
WO2016116372A1 (fr) 2015-01-20 2016-07-28 Saint-Gobain Glass France Vitre composite munie d'une zone de commande capacitive

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DE202020005725U1 (de) 2022-03-08

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