EP1560465A2 - Procédé de fabrication d'une lampe électroluminescente - Google Patents

Procédé de fabrication d'une lampe électroluminescente Download PDF

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Publication number
EP1560465A2
EP1560465A2 EP04029472A EP04029472A EP1560465A2 EP 1560465 A2 EP1560465 A2 EP 1560465A2 EP 04029472 A EP04029472 A EP 04029472A EP 04029472 A EP04029472 A EP 04029472A EP 1560465 A2 EP1560465 A2 EP 1560465A2
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
substrates
conductive layer
electroluminescent
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04029472A
Other languages
German (de)
English (en)
Inventor
Frank Dr. Gotthardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FER Fahrzeugelektrik GmbH
Original Assignee
FER Fahrzeugelektrik GmbH
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 FER Fahrzeugelektrik GmbH filed Critical FER Fahrzeugelektrik GmbH
Publication of EP1560465A2 publication Critical patent/EP1560465A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/04—Sealing arrangements, e.g. against humidity
    • 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
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded

Definitions

  • the invention relates to a method for producing an electroluminescent flat capacitor arrangement according to the preamble of claim 1 and a Electroluminescent lamp produced by such a method Lights in which such a lamp is used.
  • electroluminescent flat capacitor arrangements Generally made so that on the flat side of a stiff or flexible carrier a sequence of overlapping layers applied which are generally a base electrode, an insulating layer, a pigment layer, a cover electrode and the overall arrangement moisture protective cover layer which, when the Carrier as such is not moisture impermeable, even the other flat side of the carrier and the side edges of the entire arrangement must cover.
  • both electrodes are transparent educated.
  • the invention is based on the object, a production process of the type mentioned so on to form that with a significantly reduced Number of manufacturing steps and performed much faster can be, ie in particular for a mass production of electroluminescent lights suitable is.
  • the invention provides the laid down in claim 1 Features before.
  • a electroluminescent flat capacitor arrangement of two substrates, in particular films, of which each is covered at least on one side with an electrically conductive layer. Between these two substrates, only a single further layer, namely a dielectric added with the electroluminescent pigments is introduced, that with the two substrates that give him their electrically conductive coating turned into a sandwich-like unit together.
  • the dielectric is a transparent adhesive, in which the pigments are embedded and which is capable of the two substrates in order to connect with each other by having a firm adhesive bond with the incoming electrically conductive layers enters.
  • This adhesive layer So fulfills a threefold function as it a) before merging with the two substrates as a carrier for the pigments and in the assembled state b) on the one hand as a dielectric and c) on the other hand as a feedstock, which holds the assembly together and for a moisture-proof seal provides.
  • the adhesive system d. H. the type and layer thickness of the adhesive are to be adjusted that the pigments are completely embedded in the adhesive matrix sufficient insulation between the two electrodes and the adhesive strength to ensure the two laminated substrates together. Furthermore, that is Glue system to be selected so that the energy losses due to the electrical Displacement current when creating an AC voltage field as possible remain low and the electric field is weakened as little as possible to one to achieve optimal light output.
  • both substrates are indeed and both electrically conductive layers transparent, so that in principle An electroluminescent lamp is created, which emits light from its two main surfaces radiates.
  • An electroluminescent lamp is created, which emits light from its two main surfaces radiates.
  • only a one-sided radiation is desired, it may one of the two main surfaces with a layer of a reflective material be covered so that the light that leak through this main surface seeks, thrown back and discharged through the opposite main surface becomes. Also can with this further cover the color appearance the electroluminescent lamp are affected.
  • a first moisture-proof substrate 1 is shown on its Top carries an electrically conductive layer 2.
  • first substrate 1 Above the first substrate 1 is a second, moisture-proof Substrate 8, which has an electrically conductive layer 9 on its underside.
  • a dielectric layer 4 is reproduced, in which electroluminescent pigments 6 are embedded.
  • this dielectric can consist of a single layer, in FIG the pigments 6 are more or less evenly distributed.
  • the dielectric multilayer in particular of three layers so that an upper and a lower Edge layer contains no or significantly fewer pigments 6, which is then complete or arranged substantially only in one between these two edge layers Central layer are provided.
  • This can improve the dielectric strength and / or if the dielectric is the two substrates 1, 8 is formed interconnecting adhesive to increase the adhesive or adhesive forces be beneficial.
  • the electrically conductive layers are 2 or 9 directly on the dielectric layer 4 so that a compact layer structure in the form of a flat capacitor, in which the two electrically conductive Layers 2 and 9 form the electrodes. Lying on these electrodes an alternating voltage in the order of about 100 to 150 V, so give the doped electroluminescent pigments 6 a light, depending on the nature the substrates 1 and 8 and the applied thereto electrically conductive Layers 2 and 9 either up, down, or both up as well as down is radiated.
  • the lower substrate 1 and / or applied to it electrically conductive layer. 2 made of a non-transparent material.
  • the electric conductive layer 2 may be a copper layer.
  • Both the upper substrate 8 as also applied to its underside, electrically conductive layer 9 must then be transparent to the light emitted by the pigments 6.
  • the two substrates 1 and 8 and the ones located on them electrically conductive layers 2, 9 made of the same transparent materials.
  • One of the flat sides of the EL lighting arrangement is then provided with a in the figure 1 Not shown opaque layer covered, which advantageously can be designed as a reflector to the incident on them light through the Electroluminescent light assembly to reflect so that it on the emerges opposite side to achieve an increased light output.
  • a particular advantage of this procedure is that the two substrates 1, 8 together with their electrically conductive coatings 2, 9 as uniform Material web can be produced, which then in the two sub-films is cut.
  • the dielectric 4 with the homogeneously distributed in him electroluminescent pigments 6 can point between the two facing each other in different ways electrically conductive layers 2 and 9 of the two substrates 1 and 8 introduced become.
  • the dielectric 4 with the embedded Pigments 6 by any other coating method, for example by offset, roll, screen or other printing on those with the electric conductive layer covered side of the one of the two substrates, to then over-laminate the other substrate.
  • an adhesive can be used which is instantaneously adheres to the two electrically conductive layers 2 and 9, after he with them e.g. has been firmly joined by a lamination or rolling process, the first of the two substrates 1 and 8 and the introduced therebetween Adhesive layer 4 formed sandwich arrangement is subjected.
  • an adhesive is used, the one after its solidification moisture-impermeable layer forms and so distributed in him, sensitive Pigments 6 protects.
  • an adhesive layer may also be another transparent dielectric 4, for example a polymer can be used in which the pigments 6 are embedded and that after it between the two substrates 1 and 8 and the electric conductive layers 2 and 9 has been introduced by infrared or ultraviolet irradiation is hardened and so the substrates 1 and 8 firmly connects together and at the same time ensures a moisture-proof encapsulation.
  • a polymeric 2-component system that uses a binder and a Hardener is mixed together, which react to each other without irradiation, that some flexibility can be maintained.
  • the dielectric 4, in which the pigments 6 are embedded, does not necessarily have to be the two substrates 1 and 8 with their electrically conductive layers Connect 2 and 9 firmly together. It suffices if it is immovable between the two substrates 1, 8 is arranged. These will be sent to you Edges are connected together in a moisture-tight manner, for example welded, to the moisture-sensitive pigments 6 against the ingress of water vapor to protect.
  • optical elements can be arranged which, for example, provide such a special light distribution, that they reduce the beam angle and increased light intensity in the remaining emission angle.
  • These optically active elements can either applied directly to the outer surface of the respective substrate 1, 8, For example, also attached using a transparent adhesive or pre-set and held in the context of a lamp as separate elements become.
  • Both the electrically conductive layers 2 and 9 and the dielectric 4 with The embedded pigments 6 can be applied to the respective substrate 1 or 8 or between these substrates over the entire surface or introduced.
  • one or both electrically conductive Layers and / or the dielectric 4 only on selected surface areas of Substrates 1, 8 apply, if e.g. glowing characters are displayed should.
  • the order is preferably carried out by means of a printing process (Screen printing, offset printing, web printing) before the substrates 1 and 9 together get connected.
  • a particularly preferred method according to the invention proceeds in the manner that first on one of a transparent, moisture-proof plastic film formed starting material web on one side a transparent, electrically conductive Layer applied either by a printing or spraying method or by sputtering is made, for example, of a transparent, electrically conductive Lack or an ITO layer exists.
  • This starting material web which can be made “endless”, is then in cut two partial film webs forming the substrates 1, 8, wherein the one is turned and positioned so that its electrically conductive layer of the electric conductive layer of the other partial film web exactly opposite.
  • the separately prepared dielectric layer with the in her introduced homogeneously distributed electroluminescent pigments and the entire Layer assembly laminated together into a composite, preferably the Dielectric also at the same time ensures a moisture-proof encapsulation.
  • the transparency of the EL lamps vary because the electroluminescent pigments as such are not transparent are.
  • plastic films can other substrates, in particular rigid, as substrates or less flexible materials are used. Also is a combination in the Way possible that one of the substrates of a stiff or less flexible Material and the other of a flexible and therefore easier to process Plastic film is formed.

Landscapes

  • Electroluminescent Light Sources (AREA)
EP04029472A 2004-01-28 2004-12-13 Procédé de fabrication d'une lampe électroluminescente Withdrawn EP1560465A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004004311A DE102004004311A1 (de) 2004-01-28 2004-01-28 Herstellungsverfahren für eine El-Lampe
DE102004004311 2004-01-28

Publications (1)

Publication Number Publication Date
EP1560465A2 true EP1560465A2 (fr) 2005-08-03

Family

ID=34638781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029472A Withdrawn EP1560465A2 (fr) 2004-01-28 2004-12-13 Procédé de fabrication d'une lampe électroluminescente

Country Status (3)

Country Link
US (1) US20050164590A1 (fr)
EP (1) EP1560465A2 (fr)
DE (1) DE102004004311A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7788834B2 (en) * 2005-05-07 2010-09-07 Welch Stephen R Wearable article having a backlit lenticular display
US20080151369A1 (en) * 2005-05-07 2008-06-26 Welch Stephen R Lenticular display with a three dimensional optical mat
KR20100033859A (ko) * 2008-09-22 2010-03-31 삼성전자주식회사 무기 전계 발광 소자 및 이를 구비한 디스플레이 장치
DE102009042795A1 (de) * 2009-09-25 2011-04-07 Schreiner Group Gmbh & Co. Kg Verfahren zur Herstellung eines Elektrolumineszenzelements, Verwendung eines Drucklacks und Elektrolumineszenzelement

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752717A (en) * 1984-08-27 1988-06-21 Edwards Industries, Inc. Shielded electroluminescent lamp
US5184969A (en) * 1988-05-31 1993-02-09 Electroluminscent Technologies Corporation Electroluminescent lamp and method for producing the same
JP2998268B2 (ja) * 1991-04-19 2000-01-11 三菱化学株式会社 有機電界発光素子
JPH06251874A (ja) * 1993-02-24 1994-09-09 Nec Kansai Ltd 電界発光灯及びその製造方法
EP0875071B1 (fr) * 1996-01-16 2005-07-20 World Properties, Inc. Panneau electroluminescent enduit au rouleau
US6011352A (en) * 1996-11-27 2000-01-04 Add-Vision, Inc. Flat fluorescent lamp
US6406803B1 (en) * 1997-05-19 2002-06-18 3M Innovative Properties Company Electroluminescent device and method for producing the same
EP1044585A4 (fr) * 1998-01-06 2001-09-26 Rogers Corp Lampe electroluminescente a adherence interfaciale amelioree
JP3365302B2 (ja) * 1998-03-30 2003-01-08 株式会社デンソー Ｅｌ表示パネルの製造方法
DE19825435A1 (de) * 1998-05-29 1999-12-09 Magna Reflex Holding Gmbh Elektrolumineszenz-Anordnung
EP1240808B1 (fr) * 1999-12-17 2003-05-21 Osram Opto Semiconductors GmbH Encapsulation d'une del organique
CN100408650C (zh) * 2002-04-10 2008-08-06 弗莱肯公司 水不敏感性场致发光器件及其制造方法

Also Published As

Publication number Publication date
US20050164590A1 (en) 2005-07-28
DE102004004311A1 (de) 2005-08-18

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