WO2021156430A1 - Ensemble vitre présentant une région de commutation capacitive - Google Patents

Ensemble vitre présentant une région de commutation capacitive Download PDF

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Publication number
WO2021156430A1
WO2021156430A1 PCT/EP2021/052785 EP2021052785W WO2021156430A1 WO 2021156430 A1 WO2021156430 A1 WO 2021156430A1 EP 2021052785 W EP2021052785 W EP 2021052785W WO 2021156430 A1 WO2021156430 A1 WO 2021156430A1
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WO
WIPO (PCT)
Prior art keywords
area
pane
electrically conductive
conductive layer
zone
Prior art date
Application number
PCT/EP2021/052785
Other languages
German (de)
English (en)
Inventor
Clément BOTTOIS
Dirk Wohlfeil
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 CN202180001222.3A priority Critical patent/CN115643801A/zh
Publication of WO2021156430A1 publication Critical patent/WO2021156430A1/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
    • 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
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes

Definitions

  • the present invention lies in the technical field of wafer production and relates to a wafer arrangement with a wafer and an electrically conductive layer in which a capacitive switching area is molded, a method for producing the wafer arrangement, and the use thereof. Furthermore, the invention extends to a means of locomotion for traffic in the country, in the air or on water, in particular a motor vehicle, which is equipped with the disk arrangement according to the invention.
  • Panes, in particular vehicle panes, with electrically conductive layers in which capacitive switching areas are formed for the electrical control of functions are well known to the person skilled in the art and have already found their way into the patent literature many times. Reference is made only by way of example to EP 3264242 A1, WO 2017029384 A1 and WO 2018103975 A1. In each case, vehicle windows are shown in which capacitive switching areas are formed in an electrically conductive layer.
  • capacitive switching areas can be subject to external electromagnetic interference. This electromagnetic interference can unintentionally trigger a switching function.
  • a separating line surrounding the capacitive switching area is provided for this purpose, through which a surrounding area is generated which is electrically separated from the rest of the electrically conductive layer. The surrounding area can reduce electromagnetic interference in the capacitive switching area.
  • the object of the present invention is to provide an improved disk arrangement by means of which external electromagnetic interference is further reduced.
  • the disk arrangement should be easy, inexpensive and efficient to manufacture in industrial disk production.
  • a disk arrangement which comprises a disk and an electrically conductive layer.
  • At least one capacitive switching area (control area), with which a capacitive touch or proximity sensor can be formed in a simple manner, is formed in the electrically conductive layer.
  • the capacitive switching area is electrically verbun with sensor electronics.
  • the pane is used quite generally to separate an interior space from an external environment. Accordingly, the pane comprises an outside surface and an inside surface, the outside surface facing the outside environment and the inside surface facing the interior space.
  • the pane can be designed as desired, in particular as insulating glazing in which at least two individual panes are arranged at a distance from one another by at least one spacer, as a single pane, in particular in the form of thermally toughened single-pane safety glass, or as multi-pane laminated glass (composite pane).
  • the pane is preferably designed as a composite pane and comprises a first pane and a second pane, which are firmly connected to one another by at least one thermoplastic interlayer (adhesive layer).
  • the first disk can also be referred to as the outer disk and the second disk as the inner disk.
  • the surfaces of the two individual panes are usually referred to as side I, side II, side III and side IV from the outside to the inside. Consistent with the above definition, sides I and III are the outside surfaces that face the external environment. Sides II and IV are the inside surfaces that face the interior. Pages II and III face each other.
  • the electrically conductive layer is arranged on or on a surface of the pane, preferably an inside surface of the pane.
  • the electrically conductive layer is preferably designed as a coating of the surface, the electrically conductive layer is deposited on the surface.
  • the electrically conductive layer has a layer edge by which it is limited in area. The layer edge can extend to the edge of the pane (edge of the pane) or be set back with respect to the edge of the pane (edge decoating area). It would also be conceivable for the electrically conductive layer to be applied to a carrier (eg PET film) which in turn is arranged on or on the surface of the pane.
  • a carrier eg PET film
  • At least one layer-free first separating line is formed in the electrically conductive layer, by means of which at least one capacitive switching area is electrically separated from a surrounding area of the electrically conductive layer.
  • the first dividing line is designed as a closed line and completely surrounds the capacitive switching area.
  • the first dividing line is designed as a non-closed line and surrounds the capacitive switching area only in sections (i.e. partially) and extends freely ending (with both ends) to the edge of the layer.
  • the capacitive switching area has a detection area, a lead area and a first connection area, the lead area electrically connecting the detection area to the first connection area.
  • the surrounding area has a second connection area which is used to connect the sensor electronics.
  • the surrounding area surrounds the capacitive switching area at least in sections, in particular completely. If the capacitive switching area extends as far as the edge of the electrically conductive layer, then the surrounding area only partially or partially surrounds the capacitive switching area. In this case, the first dividing line is not closed and extends freely ending (with both ends) to the layer edge of the electrically conductive layer. However, it is also possible for the capacitive switching area to be located completely within the surrounding area of the electrically conductive layer, so that the surrounding area completely surrounds the capacitive switching area. In this case the first dividing line is closed.
  • a layer-free second dividing line is also formed, through which the surrounding area from an outer area of the electrically conductive gen layer is electrically separated.
  • the second dividing line is designed as a closed line and completely surrounds the surrounding area.
  • the second dividing line is never formed as a non-closed line, surrounds the surrounding area only in sections (partially) and it extends to freely ending (with both ends) to the layer edge of the electrically conductive layer.
  • the outer area surrounds the surrounding area at least in sections, in particular completely. If the surrounding area extends to the edge of the electrically conductive layer, then the outer area only partially or partially surrounds the surrounding area. In this case, the second dividing line is not closed and extends freely ending (with both ends) to the layer edge of the electrically conductive layer. However, it is also possible that the surrounding area is located completely within the outer area of the electrically conductive layer, so that the outer area completely surrounds the surrounding area. In this case the second dividing line is closed. If the first dividing line is a closed dividing line and completely surrounds the capacitive switching area, it is preferred if the second dividing line completely surrounds the surrounding area.
  • the first dividing line is a non-closed dividing line and extends freely (with both ends) to the edge of the layer, so that the capacitive switching area is only partially surrounded by the surrounding area
  • the second dividing line is also a non-closed dividing line and extends freely (with both ends) to the edge of the layer, so that the surrounding area is only partially surrounded by the outside area.
  • a layer-free third dividing line is formed in the outer area of the electrically conductive layer, by which the outer area is divided into a first outer area zone and a second outer area zone, the first outer area zone being electrically separated from the second outer area zone.
  • the third dividing line is designed in such a way that the second outer area zone is always located between the first outer area zone and the surrounding area.
  • the third dividing line is designed in such a way that a structure which is in contact with the pane in the installed state and is used for installing the pane only has contact with the pane in the first outer zone when viewed vertically through the pane.
  • the pane arrangement further comprises (capacitive) sensor electronics, which are electrically connected to the first connection area and a second connection area.
  • the present invention is based on the knowledge that due to the installation of a pane with a capacitive switching area in an environment, in particular in a vehicle, structures serving the installation of the pane that are in direct contact (touch contact) with the pane, electromagnetic interference in the capacitive switching range can be coupled. These can produce undesirable shifts in charge, i.e. capacitive changes, in the electrically conductive layer, which can disrupt the capacitive switching processes and, in particular, trigger faulty switching processes. Without being tied to a theory, it is assumed that these interfering influences depend on the size of the structure or the contact area with the pane.
  • vehicle windows are glued into a body or a separate metal frame using an adhesive bead.
  • the adhesive bead is formed by a high-resistance insulating adhesive, it has surprisingly been found that, due to the large contact surface, charge displacements can also be generated in the electrically conductive layer by the adhesive bead.
  • other structures which are used for installing and moving the pane and which have direct contact with the pane, such as a mechanism engaging the pane for fastening and / or moving the built-in pane.
  • such electromagnetic interference can be greatly reduced or even completely avoided by the outer area of the electrically conductive layer, which is appropriately subdivided into outer area zones.
  • the surrounding area surrounding the capacitive switching area is, as it were, electrically shielded from external interference by the outside area. Since the first outside zone is electrically separated from the second outside zone and the second outside zone is always located between the first outside zone and the surrounding area, the first outside zone, which is particularly susceptible to electromagnetic interference, is electrically separated from the rest of the electrically conductive coating. This can be achieved in a particularly advantageous manner, that external electrical interference on the capacitive switching range can be reduced very effectively.
  • the newly created outdoor area and its subdivision into outdoor area zones is used specifically for electrical shielding of the surrounding area. Unwanted or incorrect switching operations can thereby be avoided in an advantageous manner, which in particular also enables the use of capacitive sensors, which require a relatively precise change in the capacitance for control operations. Overall, the signal-to-noise ratio is improved.
  • the third dividing line is designed as a closed line and completely surrounds the surrounding area, i.e. runs around the surrounding area. It is particularly advantageous if the third dividing line electrically separates a circumferential edge region of the electrically conductive layer from the rest of the electrically conductive layer.
  • the first outer region zone then forms a circumferential edge region of the electrically conductive layer and is preferably also arranged in the edge region of the pane.
  • this has the advantage that the surrounding area can be excellently decoupled electromagnetically.
  • the edge area of the disk can be used for circumferential fastening of the disk, for example by means of an adhesive bead.
  • the third dividing line is designed as a non-closed line and only partially surrounds the surrounding area, ie not completely, the third dividing line extending freely (with both ends) to the edge of the electrically conductive layer. It is particularly advantageous if the third dividing line electrically separates a non-circumferential edge region of the electrically conductive layer from the rest of the electrically conductive layer.
  • the first outer region zone then forms a non-circumferential edge region of the electrically conductive layer and is preferably also arranged in the edge region of the pane.
  • this has the advantage that the surrounding area can be excellently decoupled electromagnetically.
  • the non-revolving Edge area of the disc for installing the disc for example in affyka rosserie, can be used by means of a mechanism for installing and / or moving the disc.
  • the outside area has a third connection area, which is used to connect the sensor electronics.
  • the sensor electronics are electrically connected to a third connection area of the outer area, the third connection area being provided for a predetermined or predetermined electrical potential (ie constant potential), in particular a special ground potential (0 volts) to be connected.
  • a predetermined or predetermined electrical potential ie constant potential
  • a special ground potential 0 volts
  • the third connection area which is to be connected to a constant potential (e.g. ground), can be provided in the first outer area zone and / or the second outer area zone. The respective outer area zone is then placed at a constant potential.
  • a constant potential e.g. ground
  • connection areas are each areas of the electrically conductive layer that do not necessarily have to have special precautions for the electrical connection of the capacitive sensor electronics.
  • the third connection area is arranged richly between the first connection area and the second connection area.
  • the third connection area is particularly advantageously arranged (directly) adjacent to the first connection area and / or to the second connection area.
  • This measure has the advantage that all three connection areas can be contacted with a common contact device, which simplifies the manufacture of the pane arrangement.
  • the disk arrangement can be produced faster and more cost-effectively in industrial series production than with individual contacting of the connection areas.
  • a cost-effective three-core cable available as standard, can be used for simple (common) electrical contacting of the connection areas with a one-piece cable connector.
  • the third connection area comprises a metallic contact surface.
  • the metallic contact surface contains or consists, for example, of copper, silver or gold. This measure enables reliable and secure contacting of the third connection area to be achieved. It would also be possible that the first connection area and / or the second connection area are each provided with such a metallic contact surface. It goes without saying that such a connection area has better properties with regard to the electrical contact than the electrically conductive layer itself. In addition, the connection areas are individualized by the metallic contact surface with respect to the electrically conductive layer.
  • the third connection area comprises a plug contact for plugging in an electrical line.
  • the width of the first, second and / or third dividing line is from 30 ⁇ m to 200 ⁇ m, preferably from 70 ⁇ m to 140 ⁇ m. This measure has the advantage that reliable and sufficiently high electrical insulation is achieved without disturbing the view through the pane.
  • the pane contains or is preferably made of 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.
  • Suitable glasses are known, for example, from EP 0 847 965 B1.
  • the thickness of the disc can vary widely and be adapted to the requirements of the individual case. Discs with the standard thicknesses of 1.0 mm to 25 mm and preferably of 1.4 mm to 2.1 mm are preferably used. The size of the discs can vary widely and depends on the use.
  • the disk can have any three-dimensional shape.
  • the pane preferably has no shadow zones, so that it can be coated, for example, by cathode sputtering.
  • the disk is preferably planar or slightly or strongly curved in one direction or in several directions of the space.
  • the disc can be colorless or colored.
  • the thermoplastic intermediate layer of a composite pane contains or consists of at least one thermoplastic material, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and / or polyethylene terephthalate (PET).
  • the thermoplastic intermediate layer can also, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resin, acrylate, fluorinated ethylene-propylene, polyvinyl fluoride and / or ethylene -Tetrafluoroethylene, or a copolymer or mixture thereof.
  • the thermoplastic intermediate layer can be formed by one or more thermoplastic films arranged one above the other, the thickness of a thermoplastic film preferably being from 0.25 mm to 1 mm, typically 0.38 mm or 0.76 mm.
  • the disk is provided with an electrically conductive layer in which the capacitive switching area is formed.
  • the electrically conductive layer is arranged on or on a surface of the pane and covers or covers the surface of the pane at least partially, but preferably over a large area.
  • the term "large area" means that at least 50%, at least 60%, at least 70%, at least 75% or preferably at least 90% of the surface of the pane is covered (e.g. coated) by the electrically conductive layer.
  • the electrically conductive layer can, however, also extend over smaller portions of the surface of the pane.
  • the electrically conductive layer is preferably transparent to visible light.
  • transparent means that the overall transmission of the pane complies with the legal requirements for windshields and front side panes and preferably has a permeability of more than 70% and in particular more than 75% for visible light.
  • transparent can also mean 10% to 70% light transmission.
  • opaque means a light transmission of less than 15%, preferably less than 5%, in particular 0%.
  • the electrically conductive layer can consist of a single layer or a layer structure of several single layers. According to the invention, the term “layer” thus also includes a plurality of individual layers or plies.
  • the electrically conductive layer is an individual layer or a layer structure composed 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.
  • the disk has, for example, a circumferential edge with a width of 2 mm to 50 mm, preferably 5 mm to 20 mm, which is not provided with the electrically conductive layer.
  • the electrically conductive layer advantageously has no contact with the atmosphere and is protected from damage and corrosion, for example in the interior of a composite pane, by the thermoplastic intermediate layer.
  • the electrically conductive layer consists of or contains at least one metal, preferably silver, nickel, chromium, niobium, tin, titanium, copper, palladium, zinc, gold, cadmium, aluminum, silicon, tungsten or alloys thereof, and / or at least one Metal oxide layer, preferably tin-doped indium oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO, Sn0 2 : F) or antimony-doped tin oxide (ATO, Sn0 2 : Sb).
  • Transparent, electrically conductive layers are known, for example, from DE 20 2008 017 611 U1 and EP 0 847 965 B1.
  • a metal layer such as a silver layer or a layer of a metal alloy containing silver.
  • Typical silver layers preferably have thicknesses of 5 nm to 15 nm, particularly preferably 8 nm to 12 nm.
  • the metal layer can be embedded between at least two layers of dielectric material of the metal oxide type.
  • the metal oxide preferably contains zinc oxide, tin oxide, indium oxide, titanium oxide, silicon oxide, aluminum oxide or the like and combinations of one or more thereof.
  • the dielectric material can also include silicon nitride, silicon carbide, aluminum nitride, as well as combinations of one or more thereof.
  • the layer structure is generally obtained by a sequence of deposition processes that are carried out by a vacuum process such as magnetic field-assisted cathode sputtering or by chemical vapor deposition (CVD).
  • Very fine metal layers which in particular contain titanium or niobium, can also be provided on both sides of the silver layer.
  • the lower metal layer serves as an adhesion and crystallization layer.
  • the upper metal layer serves as a protective and getter layer to prevent the silver from changing during the further process steps.
  • Transparent, electrically conductive layers preferably have a sheet resistance of 0.1 ohm / square to 200 ohm / square, particularly preferably from 1 ohm / square to 50 ohm / square and very particularly preferably from 1 ohm / square to 10 ohm / square.
  • the electrically conductive layer is a layer with a sun protection effect (low-E layer).
  • a layer with sun protection effect has reflective properties in the infrared range and thus in the range of solar radiation, whereby heating of the interior of a building or motor vehicle as a result of solar radiation is advantageously reduced.
  • Layers with a sun protection effect are well known to the person skilled in the art and typically contain at least one metal, in particular silver or an alloy containing silver.
  • the layer with a sun protection effect can comprise a sequence of several individual layers, in particular at least one metallic layer and dielectric layers which contain, for example, at least one metal oxide.
  • the metal oxide preferably contains zinc oxide, tin oxide, indium oxide, titanium oxide, silicon oxide, aluminum oxide or the like and combinations of one or more thereof.
  • the dielectric material contains, for example, silicon nitride, silicon carbide or aluminum nitride.
  • Layers with a sun protection effect are known, for example, from DE 10 2009 006 062 A1, WO 2007/101964 A1, EP 0 912 455 B1, DE 199 27 683 C1, EP 1 218 307 B1 and EP 1 917 222 B1.
  • the thickness of a layer with a sun protection effect can vary widely and be adapted to the requirements of the individual case, a layer thickness of 10 nm to 5 ⁇ m and in particular 30 nm to 1 ⁇ m being preferred.
  • the sheet resistance of a layer with sun protection effect is preferably from 0.35 ohms / square to 200 ohms / square, preferably 0.5 ohms / square to 200 ohms / square, very particularly preferably from 0.6 ohms / square to 30 ohms / square , and more particularly from 2 ohms / square to 20 ohms / square.
  • the layer with sun protection effect has, for example, good infrared-reflecting properties and / or particularly low emissivities (Low-E).
  • the electrically conductive layer can, for example, also be an electrically heatable layer through which the pane is provided with a heating function.
  • Such heatable layers are known per se to the person skilled in the art. They typically contain one or more, for example two, three or four electrically conductive layers. These layers contain or preferably consist of at least one metal, for example silver, gold, copper, nickel and / or chromium, or a metal alloy and preferably contain at least 90% by weight of the metal, in particular at least 99.9% by weight of the metal.
  • Such layers have a particularly advantageous electrical conductivity with simultaneous high transmission in the visible spectral range.
  • the thickness of an individual layer is preferably from 5 nm to 50 nm, particularly preferably from 8 nm to 25 nm. With such a thickness, an advantageously high transmission in the visible spectral range and a particularly
  • the electrically conductive layer or a carrier with the electrically conductive layer is arranged on or on a surface of the pane.
  • a preferably transparent, electrically conductive layer is located on an inner surface of the one and / or the other pane.
  • the electrically conductive layer can be embedded between two thermoplastic intermediate layers.
  • the electrically conductive layer is then preferably applied to a carrier film or carrier disk.
  • the carrier film or carrier disk preferably contains a polymer, in particular polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or combinations thereof.
  • the (capacitive) sensor electronics are electrically connected to the three connection areas.
  • the sensor electronics measure the capacitance between the capacitive switching area and the surrounding area. If a change in capacitance is detected when the detection area is approached or touched, the sensor electronics emit a switching signal in order to carry out a switching process for any system, for example to control the coloring of an electrochromic layer system.
  • Sensor electronics for a capacitive switching range are well known to those skilled in the art, for example, from the industrial series production of generic vehicle windows and have already been described many times in the patent literature, for example in DE 20 2005 010 379 U1 or in EP 3264242 A1 mentioned above.
  • the change in capacitance of the detection area (sensor area) compared to the surrounding area is measured by a capacitance / voltage converter.
  • the sensor electronics charge the sensor surface to a specified voltage.
  • the current flow required for charging is measured and converted into a voltage signal.
  • the sensor surface is then discharged and charged again to the specified voltage.
  • a change in the capacitance of the sensor surface can be measured by changing the voltage signal.
  • the capacitance of the sensor surface in relation to the surrounding area changes when an object, for example a finger, comes near it or touches it.
  • the capacitive switching area is designed for capacitive touch detection or proximity detection.
  • the switching area and the surrounding area each form a surface electrode.
  • a change in capacitance can also be detected by a non-oscillating oscillator, which is caused to oscillate by the change in capacitance.
  • a non-oscillating oscillator can be dampened so much that its oscillation stops.
  • Sensor electronics with an oscillator are known from EP 0 899 882 A1.
  • the invention also extends to a method for producing a disk assembly according to the invention.
  • the above statements in connection with the disk arrangement apply analogously to the method according to the invention.
  • the procedure includes:
  • a third dividing line in the electrically conductive layer in such a way that the outer area is divided into a first outer area zone and a second outer area zone, the first outer area zone being electrically separated from the second outer area zone, the third separating line being designed so that the second outer area zone is located is always located between the first outer zone and the surrounding area, a structure that is in contact with the installed pane in the installed state and used for installing the pane, in particular a bead of adhesive, only has contact with the pane in a vertical view through the pane in the first outer zone ,
  • the sensor electronics are electrically connected to a third connection area of the outer area, the third connection area being provided to be connected to a predefined or predefined electrical potential, in particular ground potential.
  • the first, second and third electrical connection areas are electrically connected with a three-wire cable, in particular with a common (one-piece) cable connector.
  • the third electrical connection area of the outer area is provided with a metallic contact surface.
  • the first connection area and / or the second connection area are also provided with a metallic contact surface.
  • the third electrical connection area of the outer area is provided with a plug contact for plugging in an electrical line.
  • the separation lines are formed in the electrically conductive layer, for example, by laser structuring, by mechanical ablation or by chemical or physical etching.
  • the electrically conductive layer is preferably deposited on a surface of the pane, the deposition preferably taking place by magnetic field-assisted cathode sputtering, vapor deposition, chemical vapor deposition (CVD), plasma-assisted gas phase deposition (PECVD) or by a wet chemical process.
  • CVD chemical vapor deposition
  • PECVD plasma-assisted gas phase deposition
  • At least two panes are preferably connected to one another (laminated) by means of at least one thermoplastic adhesive layer under the action of heat, vacuum and / or pressure.
  • It can drive known per se for the production of a composite pane can be used.
  • so-called autoclave processes can be carried out at an elevated pressure of about 10 bar to 15 bar and temperatures of 130 ° C. to 145 ° C. for about 2 hours.
  • Vacuum bag or vacuum ring processes known per se work, for example, at around 200 mbar and 130 ° C to 145 ° C.
  • the two panes and the thermoplastic intermediate layer can also be pressed in a calender between at least one pair of rollers to form a composite pane.
  • Systems of this type are known for the production of composite panes and usually have at least one heating tunnel in front of a press shop.
  • the temperature during the pressing process is from 40 ° C to 150 ° C, for example.
  • Combinations of calender and autoclave processes have proven particularly useful in practice.
  • vacuum laminators can be used. These consist of one or more heated and evakuierba ren chambers in which the first pane and second pane are laminated within, for example, about 60 minutes at reduced pressures of 0.01 mbar to 800 mbar and temperatures of 80 ° C to 170 ° C can be.
  • a flat conductor for contacting the connection areas can be easily laminated between the panes and led out of the composite.
  • the invention extends to the use of the pane arrangement according to the invention in buildings or in means of locomotion for traffic on land, in the air or on water, in particular in motor vehicles, for example as a windshield, rear window, side windows and / or roof window.
  • motor vehicles for example as a windshield, rear window, side windows and / or roof window.
  • the use of the pane arrangement in motor vehicles is preferred.
  • the invention also extends to a means of locomotion for transport on land, in the air or on water, in particular a motor vehicle, which is equipped with the pane arrangement according to the invention.
  • the pane of the pane arrangement is, for example, a windshield (usually glued into a body frame with an adhesive bead), rear window, side window and / or roof window.
  • the disc is built into the vehicle.
  • a windshield is glued into a motor vehicle by a bead of adhesive, or a vehicle window is connected to a mechanism for installing and / or moving the vehicle window.
  • FIG. 1 shows a schematic plan view of an embodiment of the pane arrangement according to the invention
  • Fig. 2 is a schematic plan view of a further embodiment of the pane arrangement according to the Invention
  • 3 shows a schematic plan view of a further embodiment of the pane arrangement according to the Invention
  • Fig. 4 is a schematic plan view of a further embodiment of the pane arrangement according to the Invention.
  • FIG. 5 shows a block diagram of a method for producing the pane arrangement according to the invention.
  • the disk 100 can be used in many ways. In the case of a vehicle, this can be, for example, a roof window, a windshield, a rear window, a side window or some other glazing that delimits the vehicle interior.
  • the pane 100 can, however, also be an architectural pane or building glazing, such as, for example, facade glazing, a roof pane or other glazing that delimits a living space or building interior. In general, however, the disc can also be used for other purposes.
  • pane 100 All electrically insulating substrates which are thermally and chemically stable and dimensionally stable under the conditions of manufacture and use of the window or composite pane according to the invention are suitable as pane 100.
  • the pane 100 includes the capacitive switching area 115, via which a capacitive change can be differentially detected over time and which can be used to electrically control a function, in particular to switch, such as a heating function or a lighting function. If an object approaches or touches the capacitive switching area 115, the capacitance changes within the capacitive switching area 115. The change in capacitance is measured via a control arrangement or sensor electronics 130, which is shown schematically in FIG. A control signal is triggered when a threshold value is exceeded. In this way, for example, an approach or contact with the capacitive switching area 115 with a hand or a finger can be detected.
  • the pane 100 comprises an electrically conductive layer 117, such as, for example, a low-E layer.
  • the electrically conductive layer 117 comprises at least one functional, electrically conductive individual layer and optionally one or more adhesive layers, barrier layers and / or antireflection layers.
  • the electrically conductive layer 117 is preferably a layer structure of at least one adhesive layer, a functional layer, a barrier layer, an anti-reflective layer and a further barrier layer.
  • a particularly suitable electrically conductive layer 117 contains a functional layer of at least one electrically conductive oxide (TCO), preferably indium tin oxide (ITO), fluorine-doped tin oxide (Sn02: F), antimony-doped tin oxide (Sn02: Sb), aluminum-doped zinc oxide ( ZnO: AI) and / or gallium-doped zinc oxide (ZnO: Ga).
  • TCO electrically conductive oxide
  • ITO indium tin oxide
  • F fluorine-doped tin oxide
  • Sn02: Sb antimony-doped tin oxide
  • ZnO aluminum-doped zinc oxide
  • ZnO gallium-doped zinc oxide
  • the electrically conductive layer 117 is electrically subdivided into different areas, which are electrically separated from one another by separating lines 107-1, 107-2 formed in the electrically conductive layer.
  • the separating lines 107-1, 107-2 interrupt the electrically conductive layer 117.
  • the individual electrically conductive areas are electrically isolated from one another by the separating lines 107-1, 107-2, so that they are galvanically separated from one another. No direct current (DC) can flow between the conductive areas of the electrically conductive layer 117 separated by the separating lines 107-1, 107-2.
  • DC direct current
  • the dividing lines 107-1, 107-2 can each have a width of, for example, 100 ⁇ m and are introduced into the electrically conductive layer 117, for example, by laser structuring. Separating lines 107-1, 107-2 with such a small width are optically barely or not perceptible and do not interfere with the view through the pane 100. This is particularly aesthetic and for use in the field of vision of driving testify for driving safety of advantage. In general, however, the dividing lines 107-1, 107-2 can also have a different width.
  • the capacitive switching area 115 comprises a detection area 103, which here is approximately teardrop-shaped, for example, and forms a first surface electrode.
  • the detection area 103 merges into a strip-shaped supply line area 119.
  • the width and the length of the detection area 103 are 40 mm, for example.
  • the width of the lead area 119 is 1 mm, for example.
  • the length of the lead area 119 is approximately 48 mm, for example.
  • the lead area 119 is connected to a first connection area 113-1.
  • the first connection area 113-1 has, for example, a square shape, here for example with rounded corners and an edge length of, for example, 12 mm. In general, however, other shapes and dimensions can also be selected for the electrically conductive structures of the capacitive switching region 115.
  • the detection area 103 can in principle have any shape. Particularly suitable detection areas 103 are designed to be drop-shaped. Furthermore, for example, angular shapes are possible, such as triangles, squares, rectangles, trapezoids or other quadrangles or polygons of a higher order. Rounded corners are advantageous. This applies in the transition area between detection area 103 and supply area 119 and / or in the transition area between supply area 119 and connection area 113-1. It is particularly advantageous if the corners have a radius of curvature of at least 3 mm, preferably of at least 8 mm.
  • a first separating line 107-1 is molded into the electrically conductive layer 117, by means of which a surrounding area 105 is electrically separated from the detection area 103, the supply line area 119 and the first connection area 113-1.
  • the first dividing line 107-1 completely surrounds the detection area 103, supply area 119 and first connection area 113-1, ie the first dividing line 107-1 is designed as a closed line, with detection area 103, supply area 119 and first connection area 113- 1 are completely within the first dividing line 107-1.
  • the surrounding area 105 completely surrounds the detection area 103, the supply area 119 and the first connection area 113-1.
  • the surrounding area 105 forms a second (surface) electrode.
  • the surrounding area 105 is arranged in particular around the detection area 103 and can be connected to the sensor electronics 130 via a further (ie second) connection area 113-2.
  • the sensor electronics 130 detect the capacitive changes when the detection area 103 is approached or touched.
  • the sensor electronics 130 detect capacitive changes between the detection area 103 and the surrounding area 105 via the two connection areas 113-1, 113-2, so that an approach or contact can be captured.
  • a second separating line 107 - 2 is molded into the electrically conductive layer 117, by means of which the surrounding area 105 is electrically separated from an outer area 109.
  • the second separating line 107-2 completely surrounds the surrounding area 105, ie the second separating line 107-2 is designed as a closed line, the surrounding area 105 being located completely within the second separating line 107-1.
  • the outer area 109 completely surrounds the surrounding area 105.
  • the remaining conductive layer 117 which forms the outer area 109, is located around the surrounding area 105.
  • the outer area 109 comprises a third electrical connection area 111, to which an electrical line 121 can be attached, which serves to apply the conductive outer area 109 to a certain (constant) electrical potential, in particular ground potential. This measure makes it possible to considerably reduce electromagnetic interference on the detection area 103 and / or the surrounding area 105.
  • the third connection area 111 is arranged in the outer area 109 and thus separately (i.e. spatially distant) next to the capacitive switching area 115.
  • the third connection area 111 has here, for example, a metallic contact surface 125, via which the electrical contact with the electrical line 121 can be established.
  • the metallic contact surface 125 can contain a layer of copper, silver or gold, through which a reliable electrical contact can be established.
  • the electrical line 121 can, for example, be soldered onto the metallic contact surface 125.
  • the third connection area 111 can also comprise a plug contact for plugging in a plug connector 129 of the electrical line 121.
  • the plug contact can be soldered onto the metallic contact surface 125 by means of a soldering process, such as, for example, an ultrasonic soldering process.
  • the layer edge 132 and the disc edge 134 are the same.
  • the layer edge 132 is typically set back with respect to the pane edge 134 (edge delamination.
  • a third dividing line 107-3 is formed in the electrically conductive layer 117, by means of which the outer area 109 is electrically divided into a first outer area zone 109-1 and a second outer area zone 109-2.
  • the third dividing line 107-3 is designed as a non-closed line and ends freely (with both ends) at the layer edge 132.
  • the third connection area 111 is here, for example, in the second outer area zone 109-2, it being equally possible to provide the third connection area 111 additionally or alternatively in the first outer area zone 109-1.
  • the second outer area zone 109-2 forms a capacitive barrier around the surrounding area 105, through which external interference can be eliminated even better.
  • the capacitive switching area 115 can be electromagnetically decoupled by the second outer area zone 109-2.
  • a side area of the pane 100 is electrically separated from the rest of the electrically conductive coating 117 by the second outer area zone 109-2.
  • the pane 100 can be attached to this side area without electromagnetic interference being transmitted to the capacitive switching area 115.
  • other side regions of the pane 100 can also be separated by the third separating line 107-3, for example on an upper side or lower side.
  • the dividing line 107-3 can also run in an arc or curved manner. In this case, U-shaped side areas can also be separated electromagnetically.
  • the third dividing line 107-3 is designed such that the second outer area zone 109-2 is always located between the first outer area zone 109-1 and the surrounding area 105.
  • the third dividing line 107-3 is designed in such a way that a structure which is in contact with the installed pane 100 in the installed state and is used to install the pane 100, in particular an adhesive bead or a mechanical system for installing and / or moving the pane 100, in a vertical view through the pane 100 has contact with the pane 100 only in the first outer region zone 109-1.
  • FIG. 2 shows a schematic plan view of a further embodiment of the disk arrangement 200 with a disk 100 which comprises a capacitive switching area 115.
  • the third connection area 111 is formed by the electrically conductive layer 117 of the pane area 109 and is located directly adjacent between the first connection area 113-1 for the capacitive detection area 103 and the second connection area 113-2 for the surrounding area 105 these two connection areas 113-1, 113-2.
  • the surface of the third connection region 111 is here, for example, square.
  • the third connection area 111 is separated from the other two connection areas 113-1 and 113-2 by the circumferential second dividing line 107-2.
  • the second dividing line 107-2 extends into the area between the first connection area 113-1 and the second connection area 113-2.
  • the third connection area 111 is arranged adjacent to the first connection area 113-1 for the capacitive detection area 103 and the second connection area 113-2 for the surrounding area 105. With this arrangement, all three connection areas 113-1, 113-2 and 111 can be contacted in a simple manner by attaching a cable connector 123 with a three-core cable as the electrical line 121. In this way, a single cable connector 123 can be used to establish contact with all three connection areas 113-1, 113-2 and 111.
  • the cable connector 123 is, for example, a prefabricated plastic part on a ribbon cable, which has respective contact devices for making electrical contact with the three connection areas 113-1, 113-2 and 111.
  • Another side area of the pane 100 (here, for example, a lower side area) is electrically separated from the rest of the electrically conductive coating 117 by the third dividing line 107-3.
  • the pane 100 can also be attached to this side area without electromagnetic interference being transmitted to the capacitive switching area 115.
  • FIG. 3 shows a schematic plan view of a further embodiment of a disk arrangement 200 with disk 100 with a capacitive switching area 115.
  • a third dividing line 107-3 is formed in the electrically conductive layer 117, by means of which the outer area 109 is electrically divided into a first outer area zone 109-1 and a second outer area zone 109-2.
  • the third dividing line 107-3 completely surrounds the surrounding area 105, ie the third dividing line 107-3 is designed as a closed line, with the second outer area zone extending completely located within the third dividing line 107-3.
  • the first outer area zone 109-1 completely surrounds the second outer area zone 109-2.
  • the second outer area zone 109-2 forms a capacitive barrier around the surrounding area 105, through which external interference can be eliminated even better.
  • the width of the second outer region zone 109-2 which is in the form of a web, for example, is constant, for example. In general, however, the second outer region zone 109-2 can also have other shapes.
  • the capacitive switching area 115 can be further electromagnetically decoupled by the second outer area zone 109-2.
  • a third connection area 111 (not shown here) can be provided, which is located in the first outer area zone 109-1 and / or the second outer area zone 109-2.
  • FIG. 4 shows a schematic plan view of a further embodiment of a disk arrangement 200 with disk 100 with a capacitive switching area 115.
  • a third dividing line 107-3 is formed in the electrically conductive layer 117, which is a closed line and completely surrounds the edge of the pane 100.
  • the outer area 109 is thereby electrically divided into a first outer area zone 109-1 and a second outer area zone 109-2, the first outer area zone 109-1 being an edge area 127 of the electrically conductive layer 117 and in a vertical view through the pane 100 in the edge area 127 of the disk 100 is arranged.
  • the third connection area 111 is here, for example, in the first outer area zone 109-1, it being equally possible to provide the third connection area 111 additionally or alternatively in the second outer area zone 109-2.
  • the second outer area zone 109-2 is located within the first outer area zone 109-1, the second outer area zone 109-2, which surrounds the surrounding area 105, being electromagnetically decoupled by the third dividing line 107-3. This applies even more to the surrounding area 105.
  • the second outer area zone 109-2 is provided to be placed on a constant electrical potential, for example ground potential, through the third connection area 111.
  • the pane 100 can be fastened mechanically, for example by gluing it into a body frame or a metal frame using adhesive beads, without the fastening exerting an electromagnetic interference.
  • the third dividing line 107-3 is designed so that the adhesive bead in contact with the pane is only in the first outer zone 109-1 and therefore not in the second outer zone 109-2 when viewed vertically through the pane. This enables a particularly good electrical decoupling of the two outer area zones 109-1, 109-2.
  • step S101 a disk 100 with an electrically conductive layer 117 is provided and at least one first dividing line is formed in the electrically conductive layer in such a way that at least one capacitive switching area is surrounded by Practice area of the electrically conductive layer is electrically separated, the first dividing line either being formed as a closed line and completely surrounding the capacitive switching area or being formed as a non-closed line, partially surrounding the capacitive switching area and extending freely (with both ends) to the edge of the layer , wherein the capacitive switching area has a detection area, a supply area and a first connection area, wherein the supply area electrically connects the detection area to the first connection area.
  • a second dividing line is formed in the electrically conductive layer in such a way that the surrounding area is electrically separated from an outer area of the electrically conductive layer, the second dividing line either being designed as a closed line and completely surrounding the surrounding area or as a non-closed Line is formed, the surrounding area partially surrounds and extends freely ending (with both ends) to the edge of the layer.
  • a third dividing line is formed in the electrically conductive layer in such a way that the outer area is divided into a first outer area zone and a second outer area zone, the first outer area zone being electrically separated from the second outer area zone, the third separating line being formed in this way is that the second outer area zone is always between the first outer area zone and the surrounding area, and that a structure that is in contact with the installed pane in the installed state and used to install the pane, in particular a bead of adhesive, is only in a vertical view through the pane of the first outer zone is in contact with the pane.
  • sensor electronics are electrically connected to the first connection area and a second connection area of the surrounding area.
  • the invention provides an improved pane arrangement through which external disturbances in the installed state of the pane, which lead to undesired errors in the capacitive switching process, can at least be greatly reduced.
  • an increase in the signal-to-noise ratio and thus an improvement in the switching behavior of the capacitive switching range can be achieved.
  • This is achieved by forming an outer area surrounding the surrounding area, which is appropriately divided into outer area zones in such a way that electromagnetic interference, which is based on physical contact from structures used for installing the pane, is avoided.
  • the outside area can be placed on a constant electrical potential, in particular ground, which further shields the capacitive switching area and the surrounding area from external interference.

Landscapes

  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention concerne un ensemble vitre (200) comprenant : une vitre (100) présentant une couche électroconductrice (117), qui est délimitée par un bord de couche, au moins une première ligne de séparation sans couche (107-1), qui est formée dans la couche électroconductrice (117) et au moyen de laquelle au moins une région de commutation capacitive (115) est électriquement séparée d'une région environnante (105) de la couche électroconductrice (117), la première ligne de séparation (107-1) étant soit sous la forme d'une ligne fermée et entourant complètement la région de commutation capacitive (115) soit sous la forme d'une ligne non fermée entourant partiellement la région de commutation capacitive (115) et s'étendant vers le et se terminant librement au niveau du bord de couche (132), la région de commutation capacitive (115) présentant une région de détection (103), une région de ligne d'alimentation (119) et une première région de connexion (113-1), la région de ligne d'alimentation (11) connectant électriquement la région de détection (103) à la première région de connexion (113-1) ; une deuxième ligne de séparation sans couche (107-2), qui est formée dans la couche électroconductrice et au moyen de laquelle la région environnante (105) est électriquement séparée d'une région externe (109) de la couche électroconductrice (117), la deuxième ligne de séparation (107-2) étant soit sous la forme d'une ligne fermée et entourant complètement la région environnante (105) soit sous la forme d'une ligne non fermée entourant partiellement la région environnante (105) et s'étendant vers le et se terminant librement au niveau du bord de couche (132), - une troisième ligne de séparation sans couche (107-3), qui est formée dans la couche électroconductrice et au moyen de laquelle la région externe (109) est divisée en une première zone de région externe (109-1) et une seconde zone de région externe (109-2), la première zone de région externe (109-1) étant électriquement séparée de la seconde zone de région externe (109-2), la troisième ligne de séparation (107-3) étant conçue de sorte que la seconde zone de région externe (109-2) soit toujours entre la première zone de région externe (109-1) et la région environnante (105) et de sorte qu'une structure, en particulier une perle adhésive, qui est en contact avec la vitre installée (100) dans l'état installé et qui est utilisée pour l'installation de la vitre (100), entre en contact avec la vitre (100) seulement dans la première zone de région externe (109-1) dans une vue perpendiculaire à travers la vitre (100) ; des pièces électroniques de capteur capacitif (130), qui sont électriquement connectées à la première région de connexion (113-1) et à une seconde région de connexion (113-2) de la région environnante (105).
PCT/EP2021/052785 2020-02-07 2021-02-05 Ensemble vitre présentant une région de commutation capacitive WO2021156430A1 (fr)

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WO2023143945A1 (fr) 2022-01-25 2023-08-03 Saint-Gobain Glass France Disque comprenant une zone de circuit

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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
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EP1218307B1 (fr) 1999-09-23 2008-07-02 Saint-Gobain Glass France Vitrage muni d'un empilement de couches minces agissant sur le rayonnement solaire
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Publication number Priority date Publication date Assignee Title
WO2023143945A1 (fr) 2022-01-25 2023-08-03 Saint-Gobain Glass France Disque comprenant une zone de circuit

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