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EP1629547A1 - Encapsulation pour composant electronique organique et procede de production correspondant - Google Patents

Encapsulation pour composant electronique organique et procede de production correspondant

Info

Publication number
EP1629547A1
EP1629547A1 EP04703393A EP04703393A EP1629547A1 EP 1629547 A1 EP1629547 A1 EP 1629547A1 EP 04703393 A EP04703393 A EP 04703393A EP 04703393 A EP04703393 A EP 04703393A EP 1629547 A1 EP1629547 A1 EP 1629547A1
Authority
EP
European Patent Office
Prior art keywords
encapsulation
electronic component
melt
alloy
alloys
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Withdrawn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
EP04703393A
Other languages
German (de)
English (en)
Inventor
Jan Birnstock
Debora Henseler
Karsten Heuser
Ralph Pätzold
Georg Wittmann
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1629547A1 publication Critical patent/EP1629547A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations

Definitions

  • the invention relates to an encapsulation for an organic electronic component, in particular an encapsulation for an organic light emitting diode (OLED).
  • OLED organic light emitting diode
  • OLEDs based on OLEDs have been known since 1987. Compared to the conventional liquid crystal displays, the OLEDs offer several advantages such as self-emission, low energy consumption, compactness and short switching times.
  • an OLED is made up of organic films that are arranged between electrodes. As soon as voltage is applied to the electrodes, light is emitted because holes recombine with electrons.
  • the thin organic layers of the OLED are typically arranged on a glass substrate and encapsulated with a further glass or metal plate.
  • attempts are also being made to replace the rigid glass or metal plates with those made of plastic.
  • hermetic sealing of the inner layers of an OLED from moisture and oxygen is essential, so it is not easy to find a replacement for the materials glass or metal.
  • plastic encapsulation with an applied protective layer being used.
  • Plastic layers made of dielectric layers that are up to 1 ⁇ m thick are also used. However, these encapsulations are not necessarily to be classified as flexible.
  • An essential point with all encapsulations is the tightness against moisture, especially water and oxi gases, especially oxygen.
  • Organic materials generally have a relatively high permeability to moisture, metals and technical ceramics have a high degree of tightness against these environmental influences, but firstly it is difficult to draw a metallic film over an organic electronic component without damaging the component itself and secondly Conventional metal layers, which were applied via CVD or the like, have a relatively high number of “pinholes” through which moisture and oxygen can diffuse through.
  • the invention relates to an encapsulation for an electronic component, in particular for an OLED, which can essentially be produced from the melt of a metallic alloy.
  • the invention also relates to a method for producing an encapsulation for an OLED by applying the melt of a metallic alloy.
  • additives such as wetting agents, adhesion promoters or the like
  • wetting agents such as wetting agents, adhesion promoters or the like
  • low-melting alloys are, for example, the "fusible alloys' 1 *, ie metallic alloys that have a low melting point or melting range.
  • hermetically sealed encapsulations for organic electronic components are created by conventional coating methods such as printing methods, “doctor-blading ⁇ ,” spin coating or “dip-coating ⁇ , because the low-melting metal alloys, the“ fusible alloys ”, are meltable at temperatures between 30 and 200 ° C. and hence how polymers can be processed, making it possible to produce a homogeneous and extensive coating as well as a structured layer.
  • the melt is applied, preferably structured, by a printing process, such as stamp or pad printing, screen printing, ink jet printing, high and / or gravure printing, stencil printing, flexographic printing and others.
  • a printing process such as stamp or pad printing, screen printing, ink jet printing, high and / or gravure printing, stencil printing, flexographic printing and others.
  • the alloy of the "fusible alloy 1 " is applied by means of an embossing technique or like a casting resin.
  • the melt can also be applied just as well by spin coating, immersion, knife coating, etc.
  • the "fusible alloys” are by their nature is known, it is, for example, alloys educational a "eutectic ⁇ to, that is at a certain percentage by mole, weight or volume of distribution of the components in the alloy, the melting point decreases the alloy or a mixture well below that of the individual components
  • the eutectic alloys also have the advantage that they have a defined melting point as opposed to a melting range which can possibly extend over 10 ° C. or more.
  • alloys which are present as a melt in the range between 30 ° C. and 200 ° C., particularly preferably below 150 ° C.
  • Components of these alloys can be the following metals: bismuth, lead, tin, cadmium, indium, mercury, silver.
  • the “fusible alloy is characterized by the fact that its melting point is clearly, ie measurable in degrees Celsius, below that of the individual components ,
  • the "fusible alloys" or alloys that are harmless to health are particularly advantageous, that is to say those which manage with little or no cadmium, mercury and / or lead.
  • the following alloys may be mentioned as examples: 57% (weight percent) bismuth, 17% tin, 26 % Indium (melting point 78 ° C); 48% tin, 52% indium (melting point 118 ° C) or 58% bismuth, 42% tin (melting point 138 ° C).
  • Another great advantage of the method is that these materials produce a homogeneous film with a low defect rate, in contrast to films that were produced using physical vapor deposition (PVD) or CVD.
  • PVD physical vapor deposition
  • an insulator layer is applied between the organic electronic component, in particular between the OLED and the encapsulation.
  • the insulating intermediate layer can be, for example, an organic layer or a ceramic layer, such as made of SiO 2 .
  • the insulating intermediate layer can be by evaporation, sputtering, chemical vapor deposition (CVD), "spin-coating" or by means of printing techniques.
  • the melt is applied directly to the organic electronic component, in particular the OLED, so that it solidifies on the electronic component, advantageously in a controlled manner. This most strongly suppresses imperfections and pinholes. Only because of the melting range at low temperatures can this process be used for organic electronic components without damaging them.
  • This form of encapsulation is particularly suitable for flexible use (with plastic films or thin glass) because the solidified, that is to say in the solid phase, “fusible alloys * alloys, preferably in the layer thickness in which they are present during the encapsulation, are flexible.
  • the layer thicknesses of the encapsulations can be between 1 and 700 ⁇ m. Layer thicknesses between 20 and 200 ⁇ m are preferred, layer thicknesses between 30 and 70 ⁇ m are particularly preferred.
  • the adhesion properties of the alloys on the substrate are very favorable, so that the transition from encapsulation to substrate can also be made relatively easily sealed.
  • the encapsulation can be used for all organic electronic components, in particular for passive matrix displays, flexible light sources and or organic solar cells or organic photovoltaic cells. Other applications include flexible organic detectors and integrated circuits on an organic basis.
  • An organic electronic component is built on a glass substrate.
  • An insulating intermediate layer is applied thereon by means of a coating process such as "spin-coating" or the like.
  • a thin film for example with a thickness of 50 ⁇ m, of a metallic, low-melting alloy, for example 48% tin and 52% indium, is applied thereon. The application can, because of the low
  • encapsulation for an organic electronic component in particular an OLED
  • OLED organic electronic component
  • fusible alloys i.e. low-melting metal alloys that combine a low melting point with high tightness against moisture and oxidizing gases.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne une encapsulation d'un genre nouveau pour composant électronique organique, notamment une diode électroluminescente organique, obtenue par des procédés de revêtement ou d'impression simples, tout en présentant une étanchéité élevée vis-à-vis d'influences environnementales nuisibles (pour le composant électronique organique). A cet effet, il est prévu d'utiliser des alliages fusibles, en d'autres termes, des alliages métalliques à faible point de fusion, qui associent un faible point de fusion et une étanchéité élevée vis-à-vis de l'humidité et de gaz oxydants.
EP04703393A 2003-01-21 2004-01-20 Encapsulation pour composant electronique organique et procede de production correspondant Withdrawn EP1629547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10302145 2003-01-21
PCT/EP2004/000429 WO2004066409A1 (fr) 2003-01-21 2004-01-20 Encapsulation pour composant electronique organique et procede de production correspondant

Publications (1)

Publication Number Publication Date
EP1629547A1 true EP1629547A1 (fr) 2006-03-01

Family

ID=32747466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04703393A Withdrawn EP1629547A1 (fr) 2003-01-21 2004-01-20 Encapsulation pour composant electronique organique et procede de production correspondant

Country Status (5)

Country Link
US (1) US20060226419A1 (fr)
EP (1) EP1629547A1 (fr)
JP (1) JP2006515716A (fr)
CN (1) CN1742394A (fr)
WO (1) WO2004066409A1 (fr)

Families Citing this family (16)

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DE102005059524A1 (de) * 2005-09-30 2007-04-05 Osram Opto Semiconductors Gmbh Gehäuse für ein elektromagnetische Strahlung emittierendes optoelektronisches Bauelement, Bauelement und Verfahren zum Herstellen eines Gehäuses oder eines Bauelements
DE102006015043A1 (de) * 2006-03-31 2007-10-11 Siemens Ag Verfahren zum Verkapseln eines organischen photoaktiven Bauteils und Verkapselung eines photoaktiven elektronischen Bauteils
KR101108157B1 (ko) * 2009-11-19 2012-01-31 삼성모바일디스플레이주식회사 유기 발광 디스플레이 장치
KR101604139B1 (ko) 2009-11-30 2016-03-17 엘지디스플레이 주식회사 유기발광다이오드 표시장치와 그 제조방법
US8333860B1 (en) 2011-11-18 2012-12-18 LuxVue Technology Corporation Method of transferring a micro device
WO2013074370A1 (fr) * 2011-11-18 2013-05-23 LuxVue Technology Corporation Procédé permettant de former une structure à microdiodes électroluminescentes et réseau de structures à microdiodes électroluminescentes doté d'une couche électriquement isolante
US8349116B1 (en) 2011-11-18 2013-01-08 LuxVue Technology Corporation Micro device transfer head heater assembly and method of transferring a micro device
US8794501B2 (en) * 2011-11-18 2014-08-05 LuxVue Technology Corporation Method of transferring a light emitting diode
US8573469B2 (en) 2011-11-18 2013-11-05 LuxVue Technology Corporation Method of forming a micro LED structure and array of micro LED structures with an electrically insulating layer
JP2014007192A (ja) * 2012-06-21 2014-01-16 Industrial Technology Research Institute Ｌｅｄウェハーを接合する方法、ｌｅｄチップを製造する方法及び接合構造
DE102013106855B4 (de) * 2013-07-01 2017-10-12 Osram Oled Gmbh Verfahren zum Herstellen eines optoelektronischen Bauelements und optoelektronisches Bauelement unter Verwendung einer flüssigen ersten Legierung
CN105097881A (zh) * 2015-07-28 2015-11-25 合肥京东方光电科技有限公司 显示面板及其封装方法、显示装置
CN107623085B (zh) * 2017-10-16 2019-12-10 深圳市华星光电半导体显示技术有限公司 Oled面板的封装方法及封装结构
CN107785501B (zh) * 2017-10-17 2019-12-24 深圳市华星光电半导体显示技术有限公司 柔性oled面板的封装方法及封装结构
CN108461652A (zh) * 2018-03-30 2018-08-28 武汉华星光电半导体显示技术有限公司 封装体、显示装置及显示面板的封装方法
CN111114157B (zh) * 2018-10-31 2022-03-01 北京梦之墨科技有限公司 一种柔版印刷方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11510647A (ja) * 1996-05-28 1999-09-14 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 有機エレクトロルミネッセンスデバイス
US6602395B1 (en) * 2000-04-11 2003-08-05 Innovative Technology Licensing, Llc Patterning of polymer light emitting devices using electrochemical polymerization
TW533446B (en) * 2000-12-22 2003-05-21 Koninkl Philips Electronics Nv Electroluminescent device and a method of manufacturing thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004066409A1 *

Also Published As

Publication number Publication date
CN1742394A (zh) 2006-03-01
WO2004066409A1 (fr) 2004-08-05
US20060226419A1 (en) 2006-10-12
JP2006515716A (ja) 2006-06-01

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