WO1991010564A1 - Pare-brise chauffable - Google Patents

Pare-brise chauffable Download PDF

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Publication number
WO1991010564A1
WO1991010564A1 PCT/DE1991/000022 DE9100022W WO9110564A1 WO 1991010564 A1 WO1991010564 A1 WO 1991010564A1 DE 9100022 W DE9100022 W DE 9100022W WO 9110564 A1 WO9110564 A1 WO 9110564A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
pane
transparency
disc
surface resistance
Prior art date
Application number
PCT/DE1991/000022
Other languages
German (de)
English (en)
Inventor
Roland Müller
Werner Müller
Wolfgang Siefert
Original Assignee
Renker Gmbh & Co Kg
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
Priority claimed from DE4006804A external-priority patent/DE4006804A1/de
Application filed by Renker Gmbh & Co Kg filed Critical Renker Gmbh & Co Kg
Publication of WO1991010564A1 publication Critical patent/WO1991010564A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3613—Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3655—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating containing at least one conducting layer
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
    • C03C17/366—Low-emissivity or solar control coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3681—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating being used in glazing, e.g. windows or windscreens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings

Definitions

  • the invention relates to a heatable pane with a sequence of layers for achieving a high transmissivity in the visible spectral range and a high reflectivity in the infrared spectral range.
  • the pane due to the low surface resistance of the layer sequence having a metal layer between two oxide layers by application an electrical power source is heated.
  • the published patent application DE 38 25 671 A1 describes a pane with a high transmission behavior in the visible spectral range and high reflection behavior for heat radiation of the type mentioned at the outset, the sequence of layers of which has a low electrical resistance, so that the pane by applying an electrical current source is heated. It is also known from this document to process such panes with a further uncoated pane to form sandwich panes which are particularly suitable for use in motor vehicles as a heated front or rear pane with an additional protective function against intensive solar radiation. In the case of laminated glass panes of this type, a tough-elastic intermediate layer made of a plastic, for example polyvinyl butyrate, is located between the two thin panes of mineral glass.
  • Heated front and rear windows with inserted heating wires that run horizontally or vertically are also known (DE 32 26 393 A1). Compared to a heatable pane of the type mentioned at the outset, however, these have the disadvantage that the heating wires are visible and visually disturb. There are also between the individual heating wires undesirable temperature fluctuations. Another disadvantage of such heating disks is that they do not offer sun protection. However, if localized heating is only desired in the area of the windshield wipers, heatable windshields with heating wires are more effective than the heatable windshield which is homogeneously heated over a large area.
  • the object of the invention is to create a heatable pane of the type mentioned at the outset, which combines the contradictory demands for high transparency in the visible spectral range, high sun protection in the infrared spectral range and high heating power.
  • the pane has a plurality of regions which have the same properties in the horizontal direction in the installed state, gradients in the surface resistance being provided between these regions in the vertical direction.
  • the heatable pane has a sun visor area, a transparency area and a wiper area, each of which is optimized with regard to its optical and electrical properties. In this way, the requirements for maximum sun protection on the entire windshield, a transmission of more than 75 percent on a defined area of the windshield and effective heatability, in particular in the area of the stationary windshield wipers, are met.
  • the pane is provided with an upper contact path at the upper edge and with a lower contact path at the lower edge, the surface resistance in the windshield wiper region adjacent to the lower contact path having the highest surface resistance and the smallest in the sun visor region adjacent to the upper contact path and the surface resistance has an average value in the transparency range optimized for the transmission.
  • the windshield is to be used essentially in countries with a lot of sunshine, it is advantageous if the windshield is provided with lateral contact strips on the right and left edge and the surface resistance of the coating in the windshield wiper area is lower than in the other areas is.
  • the arrangement can be such that the lateral contact strips do not extend to the sun visor area.
  • the lateral contact strips can only extend along the windshield wiper region.
  • the surface resistance in such an arrangement is larger in the transparency area and smaller in the sun visor area than in the windshield wiper area.
  • the lateral contact strips only extend along the windshield wiper region and the transparency region, a high-resistance narrow separation zone extending horizontally into the contact strips being provided between these regions.
  • the heatable pane can be produced in that the sequence of layers is applied to a glass pane serving as a substrate by sputtering.
  • the sequence of layers can be applied to a plastic film serving as a substrate by sputtering, which is laminated between two glass panes.
  • the coated plastic film consists of polyester and is covered on both sides by a polyvinyl butyrate film and a glass pane.
  • FIG. 2 shows a heatable pane with lateral contact strips in a representation corresponding to FIG. 1,
  • FIG. 3 shows a heatable windshield which is modified compared to the heatable windshield according to FIG. 2 and has lateral contact strips only in the windshield wiper region,
  • FIG. 4 shows a heatable pane in a representation corresponding to the preceding figures with lateral contact strips which are segmented by a separation zone between the pane wiper area and the transparency area for connection to two different current sources
  • 5 shows a heatable pane with lateral contact strips which extend laterally along the pane wiper area and the transparency area without interruption
  • FIG. 6 shows a schematic perspective illustration to illustrate the layer sequence on a substrate
  • FIG. 7 shows a schematic illustration for illustrating a cover panel for the material source of a device for cathode sputtering, which allows inhomogeneous coating in the vertical direction of a heatable pane for the simultaneous generation of all areas, and
  • Fig. 8 shows a heatable disc with segmented upper and lower contact tracks in a view.
  • the disc 1 shows a heatable pane which is provided with the overall reference number 1 and, due to its design, is designed in particular for colder zones in the northern part of Europe.
  • the disc 1 extends between an upper edge 2 and a lower edge 3 and between a left edge 4 and a right edge 5. It can be bent in the manner shown in the drawing. Of course, it can also have a different and in particular a flat shape.
  • the window has a transparency area 6 in the driver's field of vision with a transmission of more than 75 percent in the visible spectral range.
  • the pane 1 preferably has a structure of several layers, a polyester film, which has a transparent, electrically conductive coating with a layer sequence of an oxide, metal and an oxide, being laminated between two glass panes with the interposition of polyvinyl butyrate plastic films .
  • the transparent, electrically conductive layer sequence provided on the polyester film can also be applied directly to the glass of the pane 1.
  • the transparent, electrically conductive layer composed of the layer sequence oxide-metal-oxide is homogeneously formed and has a surface resistance of 6 to 7 ohms per square, for example a solar energy transmission of 52 percent and a light transmission of 76 percent .
  • the high transparency is achieved in that the highly reflective metal layer is reflected in the visible spectral range by a suitable choice of the thickness and the refractive index of the oxide used. If the oxide and metal layers are applied by sputtering or sputtering, the refractive index and the stoichiometry of the oxides can be influenced in the desired manner by changing the oxygen content and the reactive gas supply.
  • a stoichiometry adjustment is also preferably carried out when the oxides are deposited together with a layer thickness adjustment.
  • the heating output of the heatable windshield 1 is optimized.
  • the demands for high transparency, high sun protection and high heating output are in opposite directions. For this reason, the disc 1 is divided into areas which are each optimized in terms of their function.
  • the windshield wiper region 7 has a layer structure which corresponds to the structure in the transparency region 6, but the coating is optimized with regard to the thickness of the individual layers of the transparent, electrically conductive layer and the stoichiometry of the oxides from the point of view of the heating power, with a high reflection and a Surface resistance of more than 7 ohms per square, for example 10 to 12 ohms per square, results.
  • the highest heating output is required in the windshield wiper region 7, since most of the heating energy is required there to defrost the windshield wipers frozen in the rest position or to clear them of snow and ice.
  • the windshield wiper region 7 extends approximately to the boundary line 8 shown in dashed lines in FIG. 1. In the region of the boundary line 8 there is a transition in the surface resistance of the coating in the vertical direction, the optical properties only being relatively slow despite the gradient in the surface resistance change to avoid a visible dividing line.
  • the transparency area 6 is delimited by a border line 9, which is likewise not visible to the driver, since the optical properties between the transparency area 6 and the sun lens the area 10 also change not visibly by leaps and bounds.
  • the layer structure is optimized with regard to the desired sun protection.
  • the layer structure is selected such that a solar energy transmission of approximately 20 to 25 percent with a light transmission of 45 to 50 percent and a surface resistance of 2 ohms per square meter is present.
  • an upper contact path 11 can be seen at the upper edge 2 and a lower contact path 12 at the lower edge 3.
  • the contact paths 11, 12 serve to connect electrical lines, not shown in the drawing, via which electrical current for heating the disc 1 is fed.
  • the electrical resistance of the contact tracks 11, 12 is negligible compared to the resistance of the metal coating of the heatable disc 1. Since the electrical current flows serially through the sun visor area 10, the transparency area 6 and the windshield wiper area 7, the highest voltage drop and thus the highest heating output also result in the windshield wiper area with the highest surface resistance. Heating is at least carried out in the sun visor area 10 with the smallest surface resistance, and in the transmission area 6, with the selective heating provided in this way, there is medium heating, which is used for evaporation of moisture and for defrosting a thin layer of ice.
  • the surface resistance of the metal coating of the heatable disk 1 increases from the upper edge 2 to the lower edge 3, a positive gradient in the surface resistance thus being present.
  • the course of the resistance function is step-like with three levels, with a relatively steep transition between the levels.
  • the coating can also be provided such that the resistance curve increases linearly from the upper edge 2 to the lower edge 3 or has a curve lying between these extremes.
  • the heatable windshield 1 described above permits locally different (selective) heating of a windshield, which can be designed as an automobile windshield or as a rear window.
  • the heating thaws an ice layer, evaporates a moisture film and / or prevents the formation of both.
  • the greatest heating power is in the lower pane area, i.e. H. present in the rest position of the windshield wipers or in the windshield wiper region 7.
  • the pane 1 has a full-surface coating that is transparent and electrically conductive, wherein it has a defined gradient in the sheet resistance in the vertical direction over the pane surface.
  • the coating can either be applied directly on a glass pane or on a film. be seen that is laminated between glass panes.
  • the contact tracks 11, 12 are arranged at the top and bottom in the manner shown in FIG. 1, the higher resistance in the lower part of the disk 1, i. H. be provided in the wiper area 7.
  • the lower resistance in the lower region i. H. be provided in the wiper area 27.
  • FIG. 2 shows a heatable pane 21 with a left contact path 13 and a right contact path 14.
  • the pane provided with the reference symbol 21 has a transparent, electrically conductive and inhomogeneous coating in some areas, as in the case of the 1, different areas are provided.
  • a windshield wiper region 27 extends between the lower edge 23 and a boundary line 28, but has a low surface resistance compared to the exemplary embodiment according to FIG. 1.
  • the transmission region 26 with an average surface resistance.
  • the sun visor area 30 which also has an average surface resistance.
  • the transparency region 26 between the boundary lines 28 and 29, which are not visible, has a high transmission for visible light.
  • the sun visor area 30 is optimized in terms of its optical properties as sun protection.
  • the disc Wiper area 27 is optimally designed with regard to its heating power.
  • Transparent, electrically conductive layers with a high transparency of more than 80 percent and a low surface resistance of less than 10 ohms per square meter typically have the structure already mentioned above with a layer sequence of oxide, metal and oxide.
  • Such a structure is shown schematically in FIG. 6.
  • Glass or a polyester film 31, which has a thickness of, for example, 50 micrometers, can be used directly as the substrate.
  • an oxide layer 32 of 20 to 50 nanometers is applied to the polyester film. This can be, in particular, Sn0 2 , In 2 0 3 , Bi 2 0 3 , Nb 2 0 5 or Ti0 2 .
  • a thin metal layer 33 with a thickness of 10 to 30 nanometers is provided. Silver, gold or copper can be used as the metal.
  • An oxide layer 34 with a thickness of 20 to 50 nanometers follows the metal layer 33.
  • the choice of the thickness and the refractive index of the oxides makes it possible to antireflect the highly reflective metal layer 33 in the visible in order to achieve high transmission.
  • the refractive index can be changed by the oxygen content of the oxide in the above-mentioned processes, in particular reactive sputtering or cathode sputtering.
  • a shield is attached to the polyester film 31 or the glass pane, which consists of the two sheets 36, 37 shown in FIG. 7 with an intermediate space 38 which allows different amounts of layer material of the material source 35 to pass along its length and thus along the Width of the space 38 leads to different layer thicknesses when coating the polyester film 31 or the glass.
  • FIG. 3 shows a further example of a heatable pane 41 with three areas that have been optimized in each case.
  • a transparency area 46 with a light transmission of more than 75 percent in the visible spectral area.
  • the surface resistance in the transparency area 46 is higher than in the underlying wiper area 47, which is provided with short lateral contact strips 43 and 44 and has an average surface resistance.
  • the transparent, electrically conductive coating in the embodiment shown in FIG. 3 in the sun visor area 50 is in turn adapted for particularly high sun protection.
  • the sheet resistance in the solar The aperture area 50 is smaller than in the windshield wiper area 47.
  • the surface resistance in the transparency area 46 is higher in the embodiment shown in FIG. 3 than in the windshield wiper area 47.
  • the embodiment of a heatable window 41 shown in FIG. 3 combines the advantages of a particularly high level of sun protection with a selective heating in the area of the window wiper blades that is gentle on the battery. Since the lateral contact strips 43, 44 are only present in the vicinity of the lower edge 3, the heating output is limited.
  • the running direction of the substrate and in particular the substrate film or the polyester film 31 is parallel to the contact strips 43, 44. If the above-described gradient film is covered by means of a Shield 36, 37 is produced, the running direction of the substrate in Fig. 3 is transverse to the contact strips 43, 44th
  • the layers of the gradient layer are adjusted in such a way that no jumps in transparency occur in the area of the boundary lines 8, 9, which can lead to irritation of the eye.
  • FIG. 4 shows a further exemplary embodiment of a heatable pane with a transparent, electrically conductive layer which, instead of a homogeneous sheet resistance, has a sheet resistance which changes in the vertical direction of the sheet and can therefore also be referred to as a gradient layer or gradient film.
  • a sun visor area 60 is provided, in which the transparent, electrically conductive layer has the highest metal layer thickness and the highest oxide layer thickness. As can be seen in FIG. 4, the sun visor area 60 has no electrical connection.
  • the transparency region 56 follows with a very small metal layer thickness and oxide layer thickness. The heating power in the transparency area 56 is small, but it is sufficient to keep the pane 51 free of fogging in this area.
  • the transparency area 56 has its own transparency area contact tracks 53 and 54, which are attached to the sides of the transparency area 56 in the manner shown and are fed by a first circuit.
  • a second circuit is connected to the shorter contact strips 63, 64 which can be seen in FIG. 4 and which are assigned to a second heating circuit, by means of which the windshield wiper region 57 of the windshield 51 is heated.
  • the windshield wiper region 57 generates a high heating power and has a small surface resistance.
  • the metal layer thickness lies between the high metal layer thickness in the sun visor area and the small metal layer thickness in the transparency area 56.
  • FIG. 5 Another example of a heatable disk 61 with a gradient film is illustrated in FIG. 5.
  • the heating disk 61 shown there is particularly useful for areas with a climate such as that found in southern Europe.
  • the heating disk 61 has a sun visor area 70 with high sun protection.
  • a separation zone 69 can be provided between the sun visor area 70 and the transparency area 66 with high transparency in order to electrically separate the sun visor area 70 from the rest of the pane 61.
  • the transparency area 66 which should also offer the highest possible sun protection, is followed by a windshield wiper area 67 with a high heating power and a high reflection.
  • a left contact path 71 and a right contact path 72 extend along the sides of the pane 61, but there is no contacting of the sun visor region 70.
  • the pane 1, 21, 41, 51 or 61 is optimized in different segments or areas in the manner described above for either high transparency or high sun protection or high heating power, so that these opposing requirements can be optimized much better in the individual segments.
  • the segment prescribed by law with high Transparency of more than 75 percent can be coated homogeneously, which leads to the values mentioned in connection with FIG. 1.
  • the other areas of the panes 1, 21, 41, 51 and 61 can be optimally adapted to the required high sun protection and the heating power.
  • the discs according to the invention can be produced in such a way that, when coating in a system, the gradient is produced transversely to the feed direction of the substrate 31 by providing the material source 35 with suitably shaped cover plates 36, 37.
  • FIG. 8 shows a modification of the heatable disk shown in FIG. 1 with upper and lower contact tracks.
  • the embodiment shown in FIG. 8 differs from the exemplary embodiment described in connection with FIG. 1 in that, instead of a continuous upper contact track 11, an upper contact track 110 divided into two or more segments 111, 211 is provided.
  • the mutually insulated segments 111 and 211 can, for example, each extend over the left and right half of the pane. It is also possible to use segments 111, 211 of different lengths, in order to be able to supply different areas of the pane with heating current.
  • the disk 1 shown in FIG. 8 has one lower contact path 120, which is divided into segments 112 and 212 which are insulated from one another.
  • the segmentation of the lower contact path 120 into two or more segments 112, 212 corresponds to the segmentation of the upper contact path 110.
  • the disk 1 shown in FIG. 8 is otherwise constructed like the disk 1 described in connection with FIG. 1, which is why the same reference numerals have been used in FIG. 8 for the features already discussed as in FIG. 1.
  • the segmentation of the upper one Contact track 110 and the lower contact track 120 allow, for example, a higher heating current to be provided on the driver side than on the passenger side. In this way, the heating power can be concentrated on a part of the pane 1.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

Un pare-brise chauffable pour un véhicule automobile dispose d'un revêtement électroconducteur transparent présentant des zones fabriquées simultanément (6, 7, 10) ayant des résistances de surface différentes et des propriétés optiques différentes, les différentes zones (6, 7, 10) étant optimisées soit en vue d'une haute transparence (6) soit en vue d'une haute protection antisolaire (10) ou en vue d'une puissance de chauffage (7) élevée.
PCT/DE1991/000022 1990-01-15 1991-01-12 Pare-brise chauffable WO1991010564A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4019703.4 1990-01-15
DE4000949 1990-01-15
DEP4006804.8 1990-03-03
DE4006804A DE4006804A1 (de) 1990-03-03 1990-03-03 Mehrschichtsystem mit hohem reflexionsvermoegen im infrarot-spektralbereich und mit hohem transmissionsvermoegen im sichtbaren bereich

Publications (1)

Publication Number Publication Date
WO1991010564A1 true WO1991010564A1 (fr) 1991-07-25

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PCT/DE1991/000022 WO1991010564A1 (fr) 1990-01-15 1991-01-12 Pare-brise chauffable

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WO (1) WO1991010564A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498884A1 (fr) * 1990-08-30 1992-08-19 Viratec Thin Films, Inc. Procede pour le depot des revetements optiques comprenant de l'oxyde de niobium par pulverisation cathodique reactive a courant continu
DE20005071U1 (de) 2000-03-20 2000-06-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80636 München Optische Komponente mit Dünnschichtheizung
US6703586B1 (en) * 2002-09-16 2004-03-09 Southwall Technologies, Inc. Localization of heating of a conductively coated window
WO2004016043A3 (fr) * 2002-08-05 2004-04-08 Glaverbel Vitrage chauffant pour vehicule
US7019260B1 (en) * 1999-05-20 2006-03-28 Glavarbel Automotive glazing panel with solar control coating comprising a data transmission window
US7186952B2 (en) * 2002-06-05 2007-03-06 Glaverbel Heatable glazing panel with electrically conductive coating having both heatable and non-heatable coated zones

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US3794809A (en) * 1972-12-29 1974-02-26 Ford Motor Co Vehicle windshield
GB2126256A (en) * 1982-08-17 1984-03-21 Toyoda Chuo Kenkyusho Kk Heatwave shield coating
US4786783A (en) * 1987-08-11 1988-11-22 Monsanto Company Electrically heatable laminated window

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794809A (en) * 1972-12-29 1974-02-26 Ford Motor Co Vehicle windshield
GB2126256A (en) * 1982-08-17 1984-03-21 Toyoda Chuo Kenkyusho Kk Heatwave shield coating
US4786783A (en) * 1987-08-11 1988-11-22 Monsanto Company Electrically heatable laminated window

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498884A1 (fr) * 1990-08-30 1992-08-19 Viratec Thin Films, Inc. Procede pour le depot des revetements optiques comprenant de l'oxyde de niobium par pulverisation cathodique reactive a courant continu
EP0498884A4 (en) * 1990-08-30 1993-06-23 Viratec Thin Films, Inc: Dc reactively sputtered optical coatings including niobium oxide
US5372874A (en) * 1990-08-30 1994-12-13 Viratec Thin Films, Inc. DC reactively sputtered optical coatings including niobium oxide
US7019260B1 (en) * 1999-05-20 2006-03-28 Glavarbel Automotive glazing panel with solar control coating comprising a data transmission window
EP1183913B2 (fr) † 1999-05-20 2017-03-01 AGC Flat Glass Europe SA Panneau vitre d'automobile a revetement anti-solaire comprenant une fenetre de transmission de donnees
DE20005071U1 (de) 2000-03-20 2000-06-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80636 München Optische Komponente mit Dünnschichtheizung
US7186952B2 (en) * 2002-06-05 2007-03-06 Glaverbel Heatable glazing panel with electrically conductive coating having both heatable and non-heatable coated zones
WO2004016043A3 (fr) * 2002-08-05 2004-04-08 Glaverbel Vitrage chauffant pour vehicule
BE1015056A3 (fr) * 2002-08-05 2004-09-07 Glaverbel Vitrage chauffant pour vehicule.
US6703586B1 (en) * 2002-09-16 2004-03-09 Southwall Technologies, Inc. Localization of heating of a conductively coated window
WO2004024478A2 (fr) * 2002-09-16 2004-03-25 Southwall Technologies, Inc. Localisation du chauffage d'une fenetre presentant un revetement conducteur
WO2004024478A3 (fr) * 2002-09-16 2004-06-24 Southwall Technologies Inc Localisation du chauffage d'une fenetre presentant un revetement conducteur

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