EP3408879A1 - Verfahren zum einstellen der emission einer oled - Google Patents
Verfahren zum einstellen der emission einer oledInfo
- Publication number
- EP3408879A1 EP3408879A1 EP17702071.6A EP17702071A EP3408879A1 EP 3408879 A1 EP3408879 A1 EP 3408879A1 EP 17702071 A EP17702071 A EP 17702071A EP 3408879 A1 EP3408879 A1 EP 3408879A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oled
- electron beam
- emission
- layer
- organic 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- Withdrawn
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
- H10K59/10—OLED displays
- H10K59/221—Static displays, e.g. displaying permanent logos
-
- 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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
-
- 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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/20—Changing the shape of the active layer in the devices, e.g. patterning
- H10K71/211—Changing the shape of the active layer in the devices, e.g. patterning by selective transformation of an existing layer
Definitions
- the invention relates to a method by which the emission of an organic light-emitting diode (OLED) can be adjusted after the deposition of a functional organic layer of the OLED and even after the encapsulation of the OLED.
- OLED organic light-emitting diode
- An OLED usually comprises a substrate on which at least the following layers are deposited one above the other: a first electrode layer; at least one electromagnetic radiation-emitting organic layer, followed by a second electrode layer, wherein the organic layer consists of a number of partial layers of different organic layer materials. Furthermore, OLEDs also have one or more encapsulation layers, which are deposited above the second electrode layer.
- the inventive method is characterized in that the emission of an OLED is adjusted by after the full surface deposition of the at least one organic layer, the OLED is acted upon at least in a surface area with accelerated low-energy electrons of an electron beam. In this case, the organic layer of the OLED should not be heated higher than 1 50 ° C, because the OLED can be destroyed otherwise.
- the penetration depth of an electron beam into a material can be set.
- its emission can also be adjusted by means of the method according to the invention in that the wavelength range of the electromagnetic radiation emitted by the OLED and thus the color emitted by the OLED is changed in the area in which accelerated electrons of an electron beam apply the OLED. in this connection the depth of penetration of the electron beam into the layer stack of the OLED is set so low that one or more superimposed organic layers which emit electromagnetic radiation with accelerated electrons of the
- the radiation intensity of the organic layers, which are acted upon by accelerated electrons of the electron beam in the surface region, is changed, as a result of which the color emitted by the OLED is influenced in the surface region.
- Fig. 1 the layer stack of a known monochromatic OLED 1 is shown schematically and simplified in cross section.
- a first electrode layer 3 functioning as an anode in the exemplary embodiment is first deposited.
- an organic layer 4 which emits electromagnetic radiation.
- the organic layer of an OLED consists of a multiplicity of partial layers of different organic materials. By way of example only, some of these sublayers are hereafter
- HIL Hole Injection Layer
- HTL Hole Transport Layer
- EBL Electron Blocking Layer
- EML Emission Layer
- HBL Hole Blocking Layer
- ETL Electron Transport Layer
- Fig. 1 has been dispensed with the representation of the individual layers, because they have only a minor significance for the description of the method according to the invention.
- the inventive method is applicable to all known OLEDs.
- a second electrode layer 5 acting as a cathode in the exemplary embodiment is deposited, and finally an encapsulation layer 6 is deposited.
- the encapsulation layer of an OLED can consist of a multiplicity of partial layers of different materials.
- the representation of the individual sub-layers of such an encapsulation layer has also been dispensed with in the exemplary embodiment.
- the layer stack illustrated in simplified form in FIG. 1 describes a functional OLED which emits electromagnetic radiation of a wavelength range.
- the materials of the individual layers were selected in the exemplary embodiment in such a way that the OLED 1 radiates a full red color. In a surface area of the OLED 1, in which the red hue is emitted, the intensity of the red radiation is to be lowered.
- E-beam generator 8 is generated.
- the embodiment the embodiment, the
- Electron beam generator 8 is formed such that this focused
- dot-shaped electron beam 7 is generated, with which the area of the OLED 1 is swept over, in which the intensity of the red hue is to be lowered.
- the cross section of an electron beam used for the method according to the invention may have any other geometric shape. The on the
- the degree of lowering of the intensity of the OLED 1, in the surface area swept by the electron beam 7, depends on the power of the electron beam 7 and on the time duration with which the surface area is swept by the electron beam 7. The higher the power of the electron beam and / or the longer the area covered by the electron beam 7, the darker the area becomes.
- the degree of Abdunkiung a surface area of an OLED can therefore be adjusted continuously with the method according to the invention. Since also used in an OLED
- Layer materials which may be different from OLED to OLED, exert an influence on the end-ring depth of an electron beam, can in a concrete
- the organic materials used in an OLED can already evaporate at temperatures around 1 00 ° C. In the process according to the invention therefore reach
- Electron beam generators are used, which generate a electron beam with low electric power and low energy electrons, so that in
- no heating of the OLED 1 could be ascertained as a result of the charging of the OLED 1 with accelerated electrons.
- the method according to the invention makes it possible initially to deposit the layers of an OLED over a large area, without masking, in accordance with a desired geometric figure of the luminous area and in this way to produce a base OLED.
- the geometric figure of the luminous area of an OLED dark grades of certain surface areas and thus the generation of patterns, graphics and images on the luminous surface of an OLED with the inventive method according to individual configurations after the deposition of the organic layer or even after the encapsulation of an OLED can be realized.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016101636.5A DE102016101636A1 (de) | 2016-01-29 | 2016-01-29 | Verfahren zum Einstellen der Emission einer OLED |
| PCT/EP2017/051650 WO2017129681A1 (de) | 2016-01-29 | 2017-01-26 | Verfahren zum einstellen der emission einer oled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3408879A1 true EP3408879A1 (de) | 2018-12-05 |
Family
ID=57914965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17702071.6A Withdrawn EP3408879A1 (de) | 2016-01-29 | 2017-01-26 | Verfahren zum einstellen der emission einer oled |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3408879A1 (de) |
| KR (1) | KR102520785B1 (de) |
| CN (1) | CN108475738B (de) |
| DE (1) | DE102016101636A1 (de) |
| WO (1) | WO2017129681A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0773479A1 (de) * | 1995-11-13 | 1997-05-14 | Motorola, Inc. | Verfahren zur Umwandlung von Polymeren und Strukturierung von einem PPV-Derivat |
| US7338820B2 (en) * | 2002-12-19 | 2008-03-04 | 3M Innovative Properties Company | Laser patterning of encapsulated organic light emitting diodes |
| JP2005183045A (ja) * | 2003-12-16 | 2005-07-07 | Pioneer Electronic Corp | 有機elパネルの製造方法 |
| CN104766929A (zh) * | 2007-10-23 | 2015-07-08 | 皇家飞利浦电子股份有限公司 | 用于照明的装置、方法和系统 |
| JP2014032817A (ja) * | 2012-08-02 | 2014-02-20 | Sony Corp | 表示装置およびその製造方法、並びに電子機器の製造方法 |
| DE102012113044B4 (de) * | 2012-12-21 | 2017-02-02 | 4Jet Technologies Gmbh | Verfahren zur nachträglichen Leuchtflächenstrukturierung eines organischen lichtemittierenden Bauelementes und organisches lichtemittierendes Bauelement |
| JP6558880B2 (ja) * | 2014-07-11 | 2019-08-14 | 株式会社ジャパンディスプレイ | 有機el表示装置の製造方法 |
-
2016
- 2016-01-29 DE DE102016101636.5A patent/DE102016101636A1/de not_active Ceased
-
2017
- 2017-01-26 KR KR1020187023766A patent/KR102520785B1/ko active Active
- 2017-01-26 CN CN201780008732.7A patent/CN108475738B/zh not_active Expired - Fee Related
- 2017-01-26 WO PCT/EP2017/051650 patent/WO2017129681A1/de not_active Ceased
- 2017-01-26 EP EP17702071.6A patent/EP3408879A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016101636A1 (de) | 2017-08-03 |
| CN108475738A (zh) | 2018-08-31 |
| WO2017129681A1 (de) | 2017-08-03 |
| KR20180104672A (ko) | 2018-09-21 |
| KR102520785B1 (ko) | 2023-04-11 |
| CN108475738B (zh) | 2020-01-07 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BODENSTEIN, ELISABETH Inventor name: SCHOBER, MATTHIAS Inventor name: VOGEL, UWE Inventor name: METZNER, CHRISTOPH Inventor name: SAAGER, STEFAN |
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