WO2018073087A1 - Structure en couches comportant des symboles pouvant être illuminés et son utilisation - Google Patents

Structure en couches comportant des symboles pouvant être illuminés et son utilisation Download PDF

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Publication number
WO2018073087A1
WO2018073087A1 PCT/EP2017/076014 EP2017076014W WO2018073087A1 WO 2018073087 A1 WO2018073087 A1 WO 2018073087A1 EP 2017076014 W EP2017076014 W EP 2017076014W WO 2018073087 A1 WO2018073087 A1 WO 2018073087A1
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WO
WIPO (PCT)
Prior art keywords
layer
symbol
light
layer structure
surface element
Prior art date
Application number
PCT/EP2017/076014
Other languages
German (de)
English (en)
Inventor
Roland KÜNZEL
Heinz Pudleiner
Detlef Eckmann
Original Assignee
Covestro Deutschland Ag
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 Covestro Deutschland Ag filed Critical Covestro Deutschland Ag
Priority to EP17780451.5A priority Critical patent/EP3529532A1/fr
Publication of WO2018073087A1 publication Critical patent/WO2018073087A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/34—Backlit symbols

Definitions

  • the present invention relates to layer construction for an illuminable control element comprising or consisting of the following layers in the order given:
  • Fiißteiement facing away flat side of the first symbol layer can be coupled.
  • the invention further relates to an illuminable decorative element with such a layer structure, as well as the use of the decorative element and the layer structure.
  • EP 1 357 405 A1 discloses a light guide plate for a front light type illumination unit in liquid crystal display systems comprising a polymer resin containing an alicyclic structure, and at least one of the main planar surfaces has a thin curtain wall. and - Fe ers fo rs fo rm with re fl ection fu nction. With such a structure, it may be considered detrimental that the aesthetic features of the game are limited, particularly if more than two operating states are to be optically reproduced.
  • the object of the present invention was therefore to improve a Dckorelement of the aforementioned type in such a way that several Radiozu Partc are displayed and allows wider aesthetic design freedom.
  • the object of the present invention is to provide a surface element for an illuminable corner element comprising a plurality of symbols which can be made visible by illumination, the symbols being separated from one another are controllable and thus only appear for a viewer when they are illuminated by several specially mounted bulbs.
  • layer structure comprising an illuminable control element or consisting of the following layers in the order given:
  • a light-conducting surface element in which light from a first light source via at least one of its abutting edges can be coupled, wherein the light propagates laterally within the photoconductive surface element and at least partially emitted on its side facing away from the first symbol layer flat side;
  • the at least two symbol layers of the layer structure according to the invention have, at least in subregions, a symbol in the form of an ornament, printing, coating or the like, referred to below as a symbol.
  • the symbol in particular the printing, may be, for example, a company emblem, a vehicle type or a vehicle name.
  • a functional status description may be "ON” or "OFF", a text or a purely decorative pattern.
  • the symbol can be displayed both positively and negatively, which means that the symbol is either self-illuminating when lit or its surroundings are lit while the symbol remains dark.
  • the symbol is a print, it is preferably applied by screen printing or other decorating methods, more preferably by screen printing. In a further preferred embodiment, the screen printing is transparent.
  • the symbols are expediently designed in such a way that the symbol lying above in the layer structure, ie that of layer D), does not appreciably impair the visibility of the underlying symbol, that is to say that of layer A). For example, this can happen the symbols of layer A) are within that of layer D) when the symbol of layer D) is the translucent part of the symbol.
  • the two symbols can also be arranged laterally offset from one another, so that they do not overlap in such a way that they would no longer be visually identifiable.
  • the symbol of the first symbol layer and / or the second symbol layer can be generated independently of one another by a variety of decoration methods, such as IMD (In Mold Decoration), IML (In Mold Labeling), FIM (Film Insert Molding) or screen printing.
  • other printing methods such as the pad printing or a painting process can be used.
  • the symbol layer can also be produced by a laminating process.
  • the layer structure according to the invention comprises at least one electrically conductive surface element into which light from at least one of its abutting edges can be coupled by a first light source.
  • This Fiächeiement is, for example, a light guide foil of polycarbonate or PMMA.
  • Lichtleiterfol he propagates the light within the layer, where it is thrown back between the interfaces of the main surfaces, by total reflection for the most part.
  • the light-guiding finned element the light is emitted at least in sections on its flat side facing away from the first symbol layer. This can be achieved, for example, by the surface element having nanostructures or point gratings in this area. Likewise, the nanostructures or the point grid can be present on the opposite or on both flat sides.
  • the dot pattern is printed by screen printing, the dots preferably have a diameter of 20 to 100 lim.
  • the nanostructures can be produced by punching, V-cutting, embossing or by laser engraving. Such films are for example marketed by the company Nicrotek.
  • the light-conducting surface element thus preferably has nanostructures and / or point gratings, on the basis of which the light is emitted at least in sections on the flat side of the light-conducting surface element facing away from the first symbol layer.
  • the first symbol layer can be applied directly on the light-guiding surface element or else on a separate layer, in particular on a transparent carrier layer. It is also possible that the first symbol layer is a represents independent layer, for example, a punched out of an opaque film symbol.
  • the second symbol layer may be on the conductive. Surface element, the transparent intermediate layer or a cover layer to be applied.
  • the cover layer serves, for example, as a printing substrate for the second symbol layer.
  • the second symbol layer can represent an independent layer, for example a symbol punched out of an impermeable film. If the second symbol layer represents a self-contained layer, the cover layer may also be omitted.
  • the transparent intermediate layer, the transparent carrier layer, the light-conducting surface element and / or the cover layer in the range of 400 nm to 800 nm has a transmission of at least 75%, determined according to ISO 13468 at a thickness of 1 mm, preferably at least 85%, and have a haze of at most 10%, determined according to ASTM Dl 003 at a layer thickness of 1 mm, preferably of at most 5%.
  • the layer structure according to the invention as a rule, all layers are firmly arranged on one another and connected to one another.
  • the light-conducting finned element at least in the surface area from which the laterally coupled-in light is emitted, is not adhesively bonded or potted with the surface lying above it so that the microstructures and / or nanostructures are not deactivated on its surface.
  • the light-conducting surface element, the transparent intermediate layer, the protective layer, the transparent carrier layer and / or the cover layer can be constructed from a thermoplastic, which preferably consists of polycarbonate, polyacrylate.
  • a thermoplastic which preferably consists of polycarbonate, polyacrylate.
  • the respective layers of the layer structure are all transparent or transient thermoplastics suitable.
  • polyacrylates polymethacrylates (PMMA; commercially available as Plexiglas® from Röhm).
  • Cycloolefin copolymers commercially available as Topas® from Ticona, or as Zenoex® from Nippon Zeon or Arton® from Japan Synthetic Rubber
  • Copolycster commercially available as Tritan® from Eastman Chemical or as Ecozen® from S Chemicals
  • polysulfones commercially available as Uitrason® from BASF or Udel® from Solvay.
  • Polyesters such as, for example, polyethylene terephthalate (PET) or polyisocyanate (PEN), polycarbonate (PC), aliphatic polycarbonate (commercially available as Durabio® from Mitsubishi Chemical Corp.), Polycarbonate / polyester blends, eg PC PET,
  • PCCD polycyclohexylmethanolcyclohexanedicarboxylate
  • the thermoplastic material (s) of the layers are independently of one another polycarbonates or copolycarbonates based on diphenols, poly- or copolyacrylates, poly- or co-polymethacrylates, poly- or copolymers with styrene, thermoplastic polyurethanes , Polyoefins, poly- or co-polymers, of the terephthalic acid or sodium thiocyanate acids or isophores of these, preferably polycarbonates or copolycarbonates based on diphenols, poly- or copolyacrylates, Poly- or co-polymer methacrylates, poly- or copolycondensates of terephthalic acid or aphtha-indica-boron acids or isches thereof.
  • polycarbonates are all known polycarbonates, these may be homopolycarbonates, copolycarbonates and thermoplastic polyester. These preferably have average M o I eku I a rgevv ichtc M w v on 18,000 to 40,000 g / mol, preferably 22,000 to 36,000 g / mol and in particular from 24,000 to 33,000 g / mol, determined by measuring the relative solution viscosity in dichloromethane or in mixtures of equal amounts by weight of phenol 'o-dichlorobenzoi calibrated by light scattering.
  • the preparation of the polycarbonates is preferably carried out by the interfacial process or the Schmeize transesterification process and is exemplified in the following
  • Preferred starting compounds are bisphenols of the general formula
  • R is a divanent organic radical of 6 to 30 carbon atoms containing one or more aromatic groups.
  • Examples of such compounds are bisphenolc, which belong to the group of dihydroxybiphenyls, bis (h yd rox yphen y I) a I kan e, indan bisphenhenia, bis (Ii yd rox yplien y) et,
  • Bis (hydroxyphenyl) suifone B is (II yd rox yplene y) ketone e and ⁇ . ' - B is (hyd rox yph en y I) - which are so pyrophobia I ben zo I e.
  • Bisphenol-A Tet aa 1 ky I bi pheno I - A, 4,4- (meta-phenylenediisopropyl) diphenoi (bisphenol M), 4,4- (para-phenylenediisopropyl) diphenol, 1,1-bis (4 - Ii yd ro xyp Ii en yi) -, 3, 5 -trimethyicyclohexan (BPTMC) and optionally mixtures thereof.
  • the bisphenol compounds to be used according to the invention are reacted with cohensulfur compounds, in particular phosgene, or in the melt transesterification process with diphenyl carbonate or dimethyicarbonate.
  • Polystyrene erbo rbo nate are preferably obtained by reacting the already mentioned Bisphenolc, at least one aromatic dicarboxylic acid and optionally carbonic acid equivalents.
  • Suitable aromatic dicarboxylic acids are, for example, phthalic acid, Terephthalic acid, isophthalic acid, 3,3 '- or 4, 4 "- D ipheny I dica rb on acid and
  • Benzophenondicarbonsäiiren A portion, up to 80 mole%, preferably from 20 to 50 mole%, of the carbonate groups in the polycarbonates may be replaced by aromatic dicarboxylic acid ester groups.
  • Inert organic solvents used in the interfacial process include, for example, dichloromethane, the various dichloroethane and chloropropane compounds, tetra-chloromethane, trichloromethane, chlorobenzoi and chiortoluene, preferably chlorobenzene or dichloromethane or mixtures of dichloromethane and chlorobenzoi.
  • the interfacial reaction can be accelerated by catalysts such as tertiary amines, in particular N-alkylpiperidines or onium salts.
  • catalysts such as tertiary amines, in particular N-alkylpiperidines or onium salts.
  • Tributylamine, t-methylamine and N-ethylpiperidine are preferably used.
  • the catalysts mentioned in DE 4,238,123 AI are preferably used.
  • the polycarbonates can be branched by using amounts Verzweiget "a deliberate and controlled branched
  • Some suitable branching agents are:. Phioroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) heptene-2; 4.6 -Dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptane; 1, 3,5-tri- (4-hydroxyphenyl) -benzoi; 1,1,1-tri- (4-hydroxyphenophosphate); en y 1) -et h; tri - (4-h yd rox yph y y I) phenyimethane; 2,2-bis [4,4-bis (4-hydroxyphenyl) cyclohexyl] propane; 2 , 4-bis- (4-hydroxyphenyl-isopropyl) -phenoxy; 2,6-bis (2-hydroxy-5'-methyl-benzyl) -4-methylphenoxy; 2- (4-hydroxyphenyl) -2- (2 4-di
  • chain terminators are preferably phenols such as phenol, alkylphenols such as cresol and 4-tert-butylphenol, Chlorphcnol, bromophenol, cumylphenol or mixtures thereof verw ends in Amounts of 1 to 20 mol%, preferably 2 to 1 0 mol% per mole of bisphenol. Preference is given to phenol, 4-tert-butylphenol or cumylphenol.
  • Chain terminators and branching agents may be added separately or together with the bisphenol to the syntheses.
  • the preparation of the polycarbonates by the melt transesterification process is described by way of example in DE 4 238 123 A1.
  • Product are the homopolycarbonate based on bisphenol A, the homopolycarbonate based on l, l-bis (4-hydroxyphenyi) -3,3,5-trimethylcyciohexane and Copolycarbonatc based on the two monomers bisphenol A and l, l-bis - (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane.
  • the homopolycarbonate based on bisphenol A is particularly preferred.
  • the polycarbonate may contain stabilizers.
  • Suitable stabilizers are, for example, phosphine, phosphite or Si-containing stabilizers and further compounds described in EP 0 500 496 A1.
  • Examples are tri-phenyl phosphites, diphenylalkylphosphites, phenyldialkyl phosphites, tris (nonyiphenyl) phosphite, tetrakis (2,4-di-tert-butylphenyl) -4,4'-biophynyl I en-di phosphonate and triaryl phosphite called.
  • Particularly preferred are triphenylphosphine and tris (2,4-di-tert-butylphenyl) phosphite.
  • polycarbonate 0.01 to 0.5 wt .-%, based on the total weight of Poiycarbonats, esters or Teiiester of monohydric to hexahydric alcohols, in particular of Giycerin, pentaerythritol or Guerbetaikohoien contain.
  • Monohydric alcohols include, for example, stearyl alcohol, palmityl alcohol and guar- bean ethanol.
  • a dihydric alcohol is glycol.
  • a trivalent alcohol is, for example, Gy cerin.
  • Hexavalent alcohols are, for example, pentaerythritol and mesoerythritol.
  • pentavalent alcohols are arabitol, ribitol and xylitol.
  • Hexavalent alcohols are, for example, mannitol, glutathione. (Sorbitol) and Dulcit.
  • the esters are preferably the monoesters, diesters, triesters, tetraesters, pentaesters and hexaesters or mixtures thereof, in particular random M ischept, from saturated, aliphatic C 1 0 to C36 monocarboxylic acids and optionally hydroxy-monocarboxylic acids, preferably with saturated, aliphatic C 14 to C 32 monocarboxylic acids and optionally hydroxy monocarboxylic acids.
  • the commercially available fatty acid esters in particular of pentaerythritol and of glycerin, can contain up to 60% by weight of different partial esters as a result of their manufacture.
  • Saturated aliphatic monocarboxylic acids having 10 to 36 carbon atoms are, for example, capric, lauric, myristic, palmitic, stearic, hydroxystearic, arachidic, behenic, lignoceric, cerotic and montan acids.
  • Preferred saturated, aliphatic monocarboxylic acids having 14 to 22 carbon atoms are, for example, myristic acid, palmitic acid, stearic acid, hydroxystearic acid, arachidic acid and behenic acid.
  • Particularly preferred are saturated, aliphatic monocarboxylic acids such as palmitic acid, stearic acid and II yd rox yst ea ri nure.
  • saturated, aliphatic C 1 to C 1 carboxylic acids and the fatty acid esters are as such either known in the art or can be prepared by processes known in the art. examples for
  • Pentaerythritol fatty acid esters are those of the particularly preferred monocarboxylic acids mentioned above. Particularly preferred are esters of pentaerythritol and glycerin with stearic acid and palmitic acid. Also particularly preferred are esters of Guerbet alcohols and Giycerin with stearic acid and palmitic acid and optionally hydroxystearic acid.
  • the structure according to the invention has a protective layer.
  • a protective layer This is, for example, a scratch-resistant coated polystyrene foam, wherein the coating may be acrylic-based.
  • the protective layer may also consist only of the coating applied to an underlying layer.
  • the coating can be applied by methods such as painting, dip coating, direct coating or direct skinning with the appropriate coating.
  • the transparent intermediate layer, the transparent carrier layer, the photoconductive surface element and / or the cover layer should have the greatest possible transparency.
  • this is understood to mean that the corresponding components in the range from 400 nm to 800 nm have a transmission of at least 85%, determined to ISO 13468 at a thickness of 4 mm, preferably at least 90%, and a haze of at most 5%, determined according to ASTM Dl 003 at a layer thickness of 4 mm, preferably of at most 4%.
  • the transparent intermediate layer can preferably be produced by casting or back-injection.
  • Foils are preferably used for the transparent carrier layer and / or the cover layer.
  • the layers independently of one another have the following thicknesses:
  • Second symbol layer from 2 to 80 Li m, preferably from 12 to 50 Lim,
  • Transparent carrier layer of 100 to 1, 000 iim, preferably of 250 to 500 ii m,
  • First symbol layer from 2 to 80 ii m, preferably from 12 to 50 iim,
  • Cover layer from 100 to 1000 ⁇ m, preferably from 250 to 500 ⁇ m, as well as
  • Protective layer from 2 to 100 iim, preferably from 1 2 to 50 ii m.
  • Another object of the present invention relates to an illuminable Dekoreiement comprising a layer structure according to the invention and at least one first and second light source, which are preferably independently designed as a light emitting diode, in particular al s laser diode, Giühfadenlampe or gas discharge lamp.
  • the illuminable decorative element is preferably operable in at least two operating states, wherein in a first operating state only one of the light sources is lit and in a second operating state the respectively other of the light sources or both light sources.
  • several operating states such as a switch, can be displayed in an aesthetically pleasing manner in a simple manner, without requiring the use of liquid crystal units or the like for this purpose.
  • a complicated electronics is for the operation of illuminable invention.
  • Decorative element because of its simple structure ebenfal ls not required.
  • the invention further relates to a method for producing a layer structure according to the invention, in which
  • the layer structure (S) light by means of a second Lichtquel le (5) of the light-conducting surface element.
  • (3) facing away flat side of the first symbol layer (7) can be coupled, preferably first a first composite of the second symbol layer 1, and at least one layer selected from a transparent cover layer 8, the protective layer 9 and the transparent intermediate layer 2 and a second composite generates the first symbol layer 7 and the transparent support layer 6 and the first and second composite are combined with the photoconductive surface element 3 to the layer composite (S).
  • Another object of the invention relates to the use of a layer structure according to the invention as Dekoreiement, especially in the automotive sector, for office supplies and electronic devices, especially computers and mobile phones.
  • the invention relates to the use of a decorative element according to the invention as
  • the invention relates to the following embodiments:
  • a layer structure (S) for an illuminable control element comprising or consisting of the following layers in the order indicated:
  • the invention relates to a layer structure according to embodiment 1, characterized in that the first symbol layer (7) on the photoconductive surface element (3) or a transparent support layer (6) is applied.
  • the invention relates to a boot construction according to embodiment 1 or 2, characterized in that the second symbol layer (1) on the photoconductive surface element (3), the transparent intermediate layer (2) or a cover layer (8) is applied.
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the transparent intermediate layer (2), the transparent carrier layer (6), the light-conducting surface element (3) and / or the cover layer (8) in the range of 400 nm to 800 nm a transmission of at least 85%, determined according to ISO 13468 at a thickness of 4 mm, preferably at least 90%, and a haze of at most 5%, determined according to ASTM D 1003 at a layer thickness of 4 mm, preferably from not more than 4%.
  • the invention relates to a Schichtautbau according to one of the preceding embodiments, characterized in that the all layers are fixed to each other and / or interconnected.
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the light-conducting surface element. (3) anostructures and / or point grid, on the basis of which the light on the first symbol layer (7) facing away from flat side of the light-conducting Fiambaeneiements (3) is emitted at least in sections.
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the light-conducting felicitnclement (3), the transparent intermediate layer (2), the protective layer (9), the transparent support layer (6) and / or the cover layer (8) are made of a thermoplastic, which preferably consists of polycarbonate, polyacrylate, polymethacrylate, cyclohexane copolymers, polyisulfones, polyesters, polycarbonate, polycester blends, polyisocyanate, butadiene ycyc 1 o-hexylmethanol cyclohexanedicarboxylate, or polycarbonate PBT, more preferably polycarbonate. is selected.
  • a thermoplastic which preferably consists of polycarbonate, polyacrylate, polymethacrylate, cyclohexane copolymers, polyisulfones, polyesters, polycarbonate, polycester blends, polyisocyanate, butadiene ycyc 1 o-he
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the symbol of the first symbol layer (7) and / or the second symbol (1) by a printing process, in particular screen printing, laminating, painting, IMD (In Moid Decoration), IML (In Moid Labeiing) or FIM (Film Insert Molding).
  • a printing process in particular screen printing, laminating, painting, IMD (In Moid Decoration), IML (In Moid Labeiing) or FIM (Film Insert Molding).
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the transparent intermediate layer (2) can be produced by casting or injection molding behind.
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the transparent carrier layer
  • the invention relates to a layer structure according to one of the preceding embodiments, characterized in that the layers independently of one another have the following thicknesses:
  • Second symbol layer (1) from 2 to 80 ⁇ m, preferably from 12 to 50 ⁇ m,
  • Intermediate layer (2) from 100 to 1000 ⁇ m, preferably from 250 to 500 ⁇ m,
  • Light-conducting surface element (3) from 0.075 to 1, 000 ⁇ m, preferably from 250 to 750 ⁇ m,
  • Transparent support layer (6) of 100 to 1,000 Lim, preferably 250 to 500 ⁇ m,
  • First symbol layer (7) from 2 to 80 Li m, preferably from 1 2 to 50 li m,
  • Cover layer (8) of 100 to 1 000 lim, preferably of 250 to 500 li m, as well as
  • Protective layer (9) from 2 to 100 ⁇ m, preferably from 1 2 to 50 ⁇ m.
  • the invention relates to an illuminable decorative element comprising a layered structure (S) according to one of the embodiments 1 to 1 1 and at least one first and second light source (4, 5), which independently of each other preferably as a light emitting diode, in particular as a laser diode, Filament lamp or gas discharge lamp are configured, wherein the decorative element is preferably operable in at least two operating states, wherein in a first operating state, only one of Lichtquel len (4, 5) lights and in a second operating state, the other of the Lichtquel len (4, 5) or both light sources (4, 5).
  • the invention relates to a method for the produc- tion of a layer structure according to one of embodiments 1 to 1 1, in which
  • a protective layer (9) be arranged in the order given to each other, wherein in the layer structure (S) light by means of a second light source (5) of the the Licht technicallyden Fiächeiement (3) facing away from flat side of the first symbol schient (7) ei nkoppcl bar, preferably first first composite of the second symbol layer 1, and at least one layer selected from a transparent cover layer 8, the protective layer 9 and the transparent intermediate layer 2 and a second composite of the first symbol layer 7 and the transparent support layer 6 generates and the first and zw eite composite m it is composed of the non-conductive fiiding element 3 to the layer composite (S).
  • the invention relates to the use of a layer structure according to any one of embodiments 1 to 1 1 as Dekoreiement, especially in the automotive sector, for office supplies and electronic devices, especially computers and Mobi ltelefone.
  • the invention is concerned with the use of a decorative element according to embodiment 12 as a component in an electrical switch.
  • FIG. 1 shows an illuminable decorative element according to the invention in side view.
  • FIG. 1 shows an illuminable decorative element according to the invention in a lateral sectional view.
  • the decorative element comprises a layer structure S according to the invention as well as a first and second light source 4, 5.
  • the layer structure S according to the invention consists of the following layers in the order indicated: A) a first symbol layer 7 comprising at least one symbol which co-screen printed on a transparent carrier layer 6 is applied;
  • a light-conducting Fiächeiement 3 is ngekoppcl in the light from the first light source 4 via one of its abutting edges, wherein the light i nleitcher the light-conducting
  • a second symbol layer 1 comprising at least one symbol which is applied by screen printing on a transparent cover layer 8 and
  • the transparent intermediate layer 2 is connected to the light-conducting surface element 3 only in the region in which the light is not emitted from the flat side of the electrically conductive surface element 3.
  • the nanostructures on the surface of the light-guiding surface element 3 are filled by the adhesive, whereby the light emission in this area could be greatly reduced or possibly even completely lost.
  • the light is coupled in by means of the second light source 5 from the flat side of the first symbol layer 7 facing away from the light-conducting surface element 3.
  • the following materials are used for the layers:
  • Interlayer 2 polycarbonate 2205, Covestro AG, Germany on the
  • non-conductivemony oxide 3 Base of bisphenol A polycarbonate (easily flowing BPA PC (MVR 36.0 cm ⁇ 10 min according to ISO 1 133 at 300 ° C and 1, 2 kg)) non-conductivemonyneiement 3: macro foi® LM 907 of Covestro AG, Germany, with a surface embossing for light extraction, manufactured by Fa. Nicrotek, PR China first light source 4: LED, light color white second light source 5: LED, light color red transparent carrier layer 6: polycarbonate Fol he Makrofol® DE 1 - 1, 250 ⁇ , the
  • Coextrusion film of Covestro AG, Germany based on bisphenol A polycarbonate (high-viscosity BPA-PC (IR 6.5 g / 1 0m in accordance with ISO 1 133 at 300 ° C and 1, 2 kg)) and a Homo-Polymcthyl methacryi at (Plexiglas® 8N from Evoni k; MVR 3.0 cm 71 0 min according to ISO 1 133 at 230 ° C. and 3.8 kg).
  • the polycarbonate layer is 205m thick and the PMMA layer is 45m thick.
  • Protective layer 9 PMMA-based solvent-containing lacquer system 1-FHC 338,
  • the illuminable decorative element can be operated in several operating states.
  • only the first light source 4 is operated in a first operating state.
  • this operating state only the symbol of the second symbol layer 1 is visible on the observer side, that is to say the side of the protective layer 9.
  • the Lichtquel le 5 is connected, whereby additionally the symbol of the first symbol layer 7 on the side of the protective layer 9 is visible.
  • the two symbols of the first and second symbol layer 7, 1 thus overlap.
  • a plurality of operating states for example, of a switch, can be displayed in an aesthetically pleasing manner in a simple manner, without the need for the use of electronic cigarettes or the like.
  • a complic EleK onik is for the operation of the illuminable invention.
  • Decorative element because of its simple structure just fal ls not required.
  • the manufacture of the layer structure S is carried out as follows:
  • the transparent cover layer 8 is coated with a protective layer 9 in the coating process.
  • a refuse incineration is used.
  • the film with the coating represents an intermediate product, ie a finished product, which is used in the further process.
  • the composite of transparent cover layer 8 and protective layer 9 is then provided by means of screen printing with a transparent printing as a second symbol layer 1.
  • the second symbol layer 1 is visible in the switched-off state of the LED as a homogeneous image.
  • Protective layer 9 is subsequently cast as a finished element with the transparent intermediate layer 2.
  • the transparent carrier layer 6 is printed negatively in the screen printing process with the first symbol layer 7.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une structure en couches (S) destinée à un élément de commande pouvant être illuminé, comprenant les couches suivantes ou constituée de celles-ci, dans l'ordre indiqué : A) une première couche de symboles (7) comprenant au moins un symbole ; B) un élément de surface conducteur de lumière (3) dans lequel la lumière provenant d'une première source lumineuse (4) peut être injectée par l'intermédiaire d'au moins l'un de ses bords, la lumière se propageant latéralement à l'intérieur de l'élément de surface conducteur de lumière (3) et étant rayonnée au moins par sections sur sa face plane tournée à l'opposé de la première couche de symboles (7) ; C) si on le souhaite, une couche intermédiaire transparente (2) ; D) une deuxième couche de symboles (1) comprenant au moins un symbole ; E) si on le souhaite, une couche protectrice (9), la lumière pouvant être injectée dans la structure en couches (S) au moyen d'une deuxième source lumineuse (5) depuis la face plane de la première couche de symboles (7), tournée à l'opposé de l'élément de surface conducteur de la lumière (3). L'invention concerne en outre la fabrication d'une telle structure en couches (S), un élément décoratif pouvant être illuminé doté d'une telle structure en couches (S) et l'utilisation de l'élément décoratif et de la structure en couches (S).
PCT/EP2017/076014 2016-10-18 2017-10-12 Structure en couches comportant des symboles pouvant être illuminés et son utilisation WO2018073087A1 (fr)

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Application Number Priority Date Filing Date Title
EP17780451.5A EP3529532A1 (fr) 2016-10-18 2017-10-12 Structure en couches comportant des symboles pouvant être illuminés et son utilisation

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EP16194470.7 2016-10-18
EP16194470 2016-10-18

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WO2018073087A1 true WO2018073087A1 (fr) 2018-04-26

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DE102022201354A1 (de) 2022-02-09 2023-08-10 Faurecia Innenraum Systeme Gmbh Verkleidungselement für den fahrgastraum eines transportmittels

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DE102022201354A1 (de) 2022-02-09 2023-08-10 Faurecia Innenraum Systeme Gmbh Verkleidungselement für den fahrgastraum eines transportmittels

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