KR101956419B1 - Organic light emitting diode and manufacturing method thereof - Google Patents

Organic light emitting diode and manufacturing method thereof Download PDF

Info

Publication number
KR101956419B1
KR101956419B1 KR1020150036582A KR20150036582A KR101956419B1 KR 101956419 B1 KR101956419 B1 KR 101956419B1 KR 1020150036582 A KR1020150036582 A KR 1020150036582A KR 20150036582 A KR20150036582 A KR 20150036582A KR 101956419 B1 KR101956419 B1 KR 101956419B1
Authority
KR
South Korea
Prior art keywords
layer
electrode
paper
organic light
light emitting
Prior art date
Application number
KR1020150036582A
Other languages
Korean (ko)
Other versions
KR20160112039A (en
Inventor
진병두
조성민
Original Assignee
단국대학교 산학협력단
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 단국대학교 산학협력단 filed Critical 단국대학교 산학협력단
Priority to KR1020150036582A priority Critical patent/KR101956419B1/en
Publication of KR20160112039A publication Critical patent/KR20160112039A/en
Application granted granted Critical
Publication of KR101956419B1 publication Critical patent/KR101956419B1/en

Links

Images

Classifications

    • H01L51/5203—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02041—Cleaning
    • H01L21/02057—Cleaning during device manufacture
    • H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
    • H01L21/02065—Cleaning during device manufacture during, before or after processing of insulating layers the processing being a planarization of insulating layers
    • H01L51/56—
    • H01L2251/56—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/12—Passive devices, e.g. 2 terminal devices
    • H01L2924/1204—Optical Diode
    • H01L2924/12044—OLED

Abstract

An electrode structure including a paper substrate and an organic light emitting device including the electrode structure are disclosed. By forming a planarization layer on a paper substrate, the adhesion between the paper substrate and the elements formed thereon is improved, and the print quality and the deposition quality of the electrode and the organic thin film are improved. Such an organic light emitting device can be maintained in a normal operating state even in an extreme folding state and a repeated operation of folding.

Description

TECHNICAL FIELD [0001] The present invention relates to an organic light emitting diode (OLED)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device field, and more particularly, to an electrode structure including a paper substrate, an organic light emitting device including the same, and a method of manufacturing the same.

Recently, electronic device technology using a paper substrate is being developed. For example, there is a method in which a metal / carbon based electrode formed on a paper substrate is deposited and formed or printed.

In the case of the deposition method, a method of forming a patterned metal electrode by using a stencil mask is a method in which a small IC chip, an LED, a diode, or the like is attached using an adhesive such as epoxy or the like around the metal electrode (see Non-Patent Document 1 ] Reference).

A method of printing a catalyst for graphitization of a carbonaceous material on a paper sheet using a general inkjet printer and then forming a conductor by heat treatment thereof has been proposed (see Non-Patent Document 2 below).

There has also been reported an organic device using a paper substrate. For example, research has been reported on the production of organic solar cells using tracing paper. This is not as efficient as a glass-based device / module, but it also exhibits folded or warped behavior. Here, a photoactive layer structure of an organic molecular donor / acceptor formed by applying a conductive polymeric material by an oxidative vapor-patterned CVD process on a paper substrate and a spin coating process is used (see Non-Patent Document 3).

The paper substrate can be made transparent in some cases, but its transmittance is limited as compared with the glass substrate and the plastic film, so that it can be said that it is suitable for use in manufacturing all organic light emitting devices applicable to opaque substrates.

In order to form such an organic light-emitting device on a paper substrate, a proper surface treatment method is required to improve properties such as bonding strength between a connection electrode or a wiring electrode, a charge injection layer and a paper substrate, morphological properties such as surface roughness, However, a specific technique has not been developed and disclosed.

[1] A.C. Siegel, S. T. Phillips, M. D. Dickey, N. Lu, Z. Suo, G. M. Whitesides, Adv. Funct. Mater. (2010) 20, 28 [2] Y. Zheng, Z. He, Y. Gao, J. Liu, Scientific Reports (2013) 3, 1786 [3] M. C. Barr, J. A. Rowehl, R. R. Lunt, J. Xu, A. Wang, C. M. Boyce, S. G. Im, V. Buloviņan, K. K. Gleason, Adv. Mater. 2011,23,3500

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides an electrode structure including a paper substrate which can be used for an electronic device.

The present invention also provides an organic light emitting device comprising the above-described improved electrode structure.

The present invention also provides a method of manufacturing an organic light emitting device.

The present invention provides an electrode structure for an electronic device comprising a paper layer; A planarization layer formed on a surface of the paper layer; And an electrode layer formed on the planarization layer, wherein the electrode layer includes a connection electrode for connection between an element and an external power source.

The planarization layer may be formed of a polymeric material.

The connection electrode may be formed using a material including a silver nano material, a graphen material, or a mixture of silver nano and graphene.

The present invention provides an organic light emitting device comprising: a paper layer; A planarization layer formed on the paper layer; An electrode layer formed on the planarization layer; And an organic layer formed on the electrode layer, wherein the electrode layer includes a connection electrode for connection to an external power source. The planarization layer may be formed of a polymer material, and the connection electrode may be formed of a silver nano material, a graphen material, or a mixture of silver nano and graphene.

The present invention also provides a method of manufacturing an organic light emitting device, comprising: preparing a paper layer; Forming a planarization layer on at least one surface of the paper layer; Forming an electrode layer on the planarization layer, the electrode layer including a connection electrode for connection with an anode node and an external power source; And forming an upper structure on the anode, the upper structure including an organic layer and a cathode, wherein the planarization layer is formed by spin-coating a polymeric material.

The connection electrode may be formed through a solution process using a material mixed with a silver nano material, a graphen material, or silver nano and graphene.

The anode may also serve as a reflective layer, and the cathode may be formed of a transparent electrode.

The planarization layer may be formed to have a thickness to embed at least a groove formed on a surface of the paper layer.

According to the present invention, there is provided an electrode structure that can be preferably applied to a collapsible electronic device. In the present invention, since a suitable planarizing layer is formed on a paper substrate and an electrode layer is formed thereon, the printing quality of the electrode layer and the organic thin film deposition characteristics can be improved. By complementing the surface roughness of the paper substrate, it is possible to fabricate thin film electrodes through the deposition process, and it is possible to stack and maintain organic layers of several tens of nanometers in thickness to fabricate OLEDs. Further, when a material in which silver nano and graphene are mixed as the connection electrode is applied, the organic light emitting element can be driven even in the extremely folded state of 90 to 180 degrees.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of an electrode structure and an organic light emitting device including the electrode structure of the present invention. FIG.
FIGS. 2 and 3 are photographs showing the organic light emitting device of FIG. 1. FIG.
4 is a comparative photograph of a paper layer on which a planarization layer is formed and a paper layer on which a planarization layer is not formed, applied to the electrode structure of the present invention.
5 is a photograph for confirming an improvement in print quality of a connection electrode included in the electrode structure of the present invention.
FIG. 6 is a photograph showing a part of the electrode structure of the present invention. FIG. 6 (a) is a poly (vinylphenol) (PVP) ), And (c) is a poly (vinylalcohol) (PVA).
7 is a photograph for confirming the folding stability of the paper substrate itself and the folding stability of the electrode structure of the present invention. (a), (b) and (d) are photographs for confirming the folding stability of the paper substrate itself by forming silver nano wires on a paper substrate without a planarizing layer, This is a photograph for confirming the folding stability of the electrode structure by forming a silver electrode on a paper substrate and comparing with (d).
8 is a graph showing the results of testing folding stability of Examples and Comparative Examples of the present invention.
9 is a graph showing the current density and luminance ((a)) and the light efficiency ((b)) of the embodiments of the present invention and the comparative example.
10 is a graph showing a change in maximum light efficiency of the front-type organic light emitting device due to repetitive folding according to the embodiments of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Briefly stated, the present invention relates to an electrode structure formed on a paper substrate and to the manufacture of an organic device comprising the same. The present invention improves properties such as adhesion between the paper substrate and the elements formed thereon, printing suitability of the formed elements, etc. by forming a planarizing layer on the paper substrate. In particular, the connection electrode for connection between the device and the external power source can be maintained to allow normal device operation even in an extreme folding state and a repeated operation of folding.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of an electrode structure and an organic light emitting device including the electrode structure of the present invention. FIG.

Referring to the drawings, an organic light emitting device of the present invention includes an electrode structure 1 and an element portion 2. [ The electrode structure 1 herein includes a paper layer 11, a planarization layer 12 formed on the paper layer 11, and an electrode layer 13. [ The electrode layer 13 includes at least an anode 132 and a connection electrode 131 in the form of a wiring for connection between an electrode of the element and an external power source, which is a circle and a rectangle in FIG.

The element portion 2 includes the organic layers 21, 22, and 23 formed on the electrode structure 1, and the cathode 24, as described below, since the present invention may be suitable for a front light emitting element . A capping layer 25 may be disposed on the cathode 24.

The electrode structure 1 of the present invention includes a planarization layer 12 formed on the surface of a paper layer 11 or a paper substrate and a paper layer 11 and an electrode layer 13 formed on the planarization layer 12. As shown in FIG. 1, the present invention is suitable for a front-emitting type device, wherein a structure referred to as an electrode layer 13 may correspond to a structure including an anode 132 or a rear electrode. However, the electrode structure 1 of the present invention is not limited thereto.

In the illustrated example, the electrode layer 13 includes a connection electrode 131 for connection between the anode node 132 or the backside electrode and the device and the external power source, as described above. The paper layer 11 or the paper substrate may be, for example, but not limited to, a silicone-coated paper CP, a compatible photo paper HI-6022, a stone paper (RPD-200 of Mineral Paper Co.) .

The planarization layer 12 is formed on at least one surface of the paper layer 11, the upper surface in the illustrated example. This planarizing layer 12 allows the upper structure including the electrode layer 13 to be formed on the paper layer 11 well. For example, it is possible not only to enhance the adhesion between the paper layer 11 and the upper structure, but also to improve the printing suitability when the upper structure is formed through the printing process, and also to form the upper structure well through the deposition process. As a result, the element in which the electrode structure 1 of the present invention is employed can be extremely folded, and even after the repeated folding operation, normal performance can be maintained.

Materials that can be applied to the planarization layer 12 include, but are not limited to, polymer materials such as PVP, Ormocomp, PVA, and the like.

The planarization layer 12 may be formed by, for example, spin coating, but is not limited thereto. The planarization layer 12 may be at least about 500 nm to fill the peak-to-valley value of the minimum paper substrate, and may be greater than or equal to 1000 nm, depending on the surface characteristics of the paper, to be coated in addition to the valley.

Fig. 4 is a graph showing the results obtained by forming three types of paper layers 11 that can be employed in the electrode structure 1 of the present invention, or those in which the planarization layer 12 is formed on a paper substrate ((a '), (b' (a), (b), and (c)) that have not been formed with respect to the surface of the substrate (c ')). (B) and (b ') illustrate application of compatible photo paper as a paper substrate, (c) and (c'), RPD-200 is applied as a paper substrate. The planarization layer 12 was spin-coated with a PVP solution having a concentration of about 20 wt% with propylene glycol monomethyl ether acetate (PGMEA) as a solvent to a thickness of about 500 nm. As can be seen from the figure, it can be seen that the surface roughness of the paper substrate is improved by forming the planarization layer 12.

The electrode layer 13 may include an anode 132 and a connection electrode 131 as described above. The anode node 132 may be formed on the paper layer 11 through, for example, an inkjet printing technique, but other processes such as a deposition process may be used. The anode node 132 may also serve as a reflective layer, and may be formed of, for example, Al. The connection electrode 131 may preferably have a wiring shape, and it may be a wire shape formed of a material mixed with silver nano, graphene, or silver nano and graphene. The connection electrode 131 may be formed by, for example, a deposition process, a printing process using an inkjet, a spray process, or the like. In the case of the organic light emitting device, the folding or bending portion substantially corresponds to the connecting electrode 131, and the graphene flake may be mixed with the silver nano to improve the stability in the folded state.

5 is a photograph for confirming an improvement in print quality of the connection electrode 131 included in the electrode structure 1 of the present invention. (A ') and (b') on the left side are printed on a silicon-free paper having no planarization layer and a silver electrode using an inkjet on a compatible photo paper, And a silver electrode is printed thereon using an ink jet.

As can be seen from FIG. 5, when the surface of the line electrode printed through the optical microscope was checked, the print quality of the line electrode was further improved when the surface treatment (planarization layer formation) was performed and the adhesion between the substrate and the electrode was improved And the surface resistance of the electrode is also improved.

FIG. 6 is a photograph showing a part of the electrode structure 1 of the present invention. In FIG. 6, (a) PVP, (b) Ormocomp and (c) PVA are applied to the planarization layer 12, And the connection electrode is formed of silver. It can be seen that there is a slight difference in the print quality of the silver electrode depending on the type of the planarization layer 12.

7 is a photograph for confirming the folding stability of the paper substrate itself and the folding stability of the electrode structure of the present invention. (a), (b) and (d) show silver nano wires formed on a paper substrate without a planarizing layer, and (c) silver electrodes on a RPD-200 paper substrate through inkjet printing. Folding them at 180 degrees, and comparing the stability of the paper and the electrode itself. As can be seen from the photograph, the paper of (a) and (b) shows a break phenomenon, but the paper of (d) shows that the silver nano wire shows a stable state. In case (c), a silver electrode using inkjet printing was formed on the same paper as in (d), and folded 180 degrees to compare the stability of the electrode itself compared to (d). (c), the electrode breaks, but (d) shows a stable state.

Hereinafter, embodiments and comparative examples of the present invention will be described.

Example 1

 In Example 1, a silver nano wire was fabricated by using a spraying method on a RPD-200 paper substrate having a planarizing layer 12 formed by surface treatment with PVP, The device was fabricated.

Specifically, RPD-200 paper having a planarization layer 12 formed by using PVP is manufactured as a connection electrode using a silver nano wire on a substrate 11 by a spraying method, and an anode 132 ( Reflective electrode, Al) was deposited to a thickness of 100 nm at a rate of 1 angstrom / sec. Then, MoO 3 was deposited to a thickness of 2 nm at a rate of 0.2 Å / sec as the charge injecting layer 21, and NPB was deposited to a thickness of 58 nm at a rate of 1 Å / sec as a charge transfer layer 22. 40nm light-emitting layer and the electron mobility was deposited at a rate of 1Å / sec to Alq 3 to 23, and a cathode (transparent electrode) 24 of LiF, Al, 0.1Å / sec for each of Ag, 1Å / sec, 1Å / sec A total thickness of 19.5 nm was sequentially deposited at a thickness of 0.5 nm, 1 nm and 18 nm. (1 / conductivity) was measured by folding the ink-jet printed silver electrode (connecting electrode 131) at 180 degrees after all the top emission type organic light emitting devices were produced, and the light efficiency of the front type organic light emitting device was measured with a spectroradiometer ).

Example 2

 In Example 2, a connecting electrode 131 was formed by a spraying method using a solution in which nano graphene nano-flakes were mixed at a ratio of 10 wt% on an RPD-200 paper substrate having a planarization layer formed by surface treatment with PVP Respectively. Thereafter, the front-type organic light-emitting device was fabricated using the same thermal deposition process as in Example 1. [ Likewise, the resistance and the light efficiency were measured by folding the connecting electrode portion of the fabricated device to 180 degrees.

Example 3

 In Example 3, a connecting electrode was prepared by spraying using a solution prepared by surface-treating with PVP and mixing a silver nano-graphene nano-flake at a ratio of 30 wt% on a RPD-200 paper substrate. Thereafter, the front-type organic light-emitting device was fabricated using the same thermal deposition process as in Example 1. [ Likewise, the resistance and the light efficiency were measured by folding the connecting electrode portion of the fabricated device to 180 degrees.

Comparative Example

In the comparative example, a connecting electrode of silver nano wire was fabricated on a RPD-200 paper substrate having no planarizing layer by spraying. Thereafter, the front-type organic light-emitting device was fabricated using the same thermal deposition process as that of the first embodiment. Likewise, the resistance and the light efficiency were measured by folding the connecting electrode portion of the fabricated device to 180 degrees.

Comparing folding safety of Examples and Comparative Examples

8 is a graph showing the results of testing folding stability of Examples and Comparative Examples of the present invention. Here, (a) shows the relative conductivity according to the folding angle, and (b) shows the relative conductivity according to the repeated folding.

Specifically, FIG. 8A is a result of comparing the relative conductivities by measuring the resistance of the connecting electrodes by folding ten times from the inner extremely folded state (-180 degrees) to the extreme folded state (+180 degrees). FIG. 8 (b) shows a comparison of the stability by repeating folding tests up to 1000 times in the extreme folding state. In comparison between the comparative examples and the examples, it can be confirmed that the stabilizability in the folded state and the stability in the repeated folded state are improved in the embodiments of the present invention in which the planarization layer 12 is formed by surface treatment with PVP. In addition, among the examples, it can be seen that when the connecting electrode is formed using the solution containing the nano-graphene nano-flake, the stability in the repeatedly folded state is improved.

The current density, luminance and optical efficiency data of the embodiments and the comparative example

9 is a graph showing the current density and luminance ((a)) and the light efficiency ((b)) of the embodiments of the present invention and the comparative example. In the comparative example, the surface treatment with PVP was not performed, and the depth (peak to valley) formed on the surface of the paper substrate was deepened to about 511 nm. In the examples, the sheet resistance of Example 1 was 1.01? / Sq, the sheet resistance of Example 2 was 1.51? / Sq, and the sheet resistance of Example 3 was 1.75? / Sq. It can be seen that as the content of graphene nanoflake increases, the resistance increases. It can be confirmed that Example 1 in which graphene is not added even in the current density and the light efficiency shows the best characteristics.

Maximum light efficiency change due to repetitive folding of embodiments

10 is a graph showing a change in maximum light efficiency of the front-type organic light-emitting device due to repetitive folding of the embodiments of the present invention. As a result, in Example 1 in which graphene nanoflake was not added, the light efficiency decreased sharply as the number of times of repeated folding increased, and the light efficiency became 0 as a result of 100 folding tests. As a result, it is confirmed that Examples 2 and 3, in which graphene nanoflake was added, are stable connection electrodes even in 100 repeated tests.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

1: Electrode structure 2: Element part
11: paper layer 12: planarization layer
13: electrode layer 21: charge injection layer
22: charge transport layer 23: electron transport and light emitting layer
24: cathode 25: capping layer
131: connecting electrode 132: anode

Claims (10)

delete delete delete As the organic light emitting element:
Paper layer;
A planarization layer formed on the paper layer;
An electrode layer formed on the planarization layer; And
And an organic layer formed on the electrode layer,
And the electrode layer includes a connection electrode for connection to an external power source.
The method of claim 4,
Wherein the planarization layer is formed of a polymeric material.
The method of claim 4,
Wherein the connection electrode is formed of a material mixed with a silver nano material, a graphen material, or silver nano and graphene.
A method of manufacturing an organic light emitting device,
Preparing a paper layer;
Forming a planarization layer on at least one surface of the paper layer;
Forming an electrode layer on the planarization layer, the electrode layer including a connection electrode for connection with an anode node and an external power source; And
Forming an upper structure on the anode including an organic layer and a cathode,
Wherein the planarization layer is formed by spin coating a polymeric material.
The method of claim 7,
Wherein the connection electrode is formed through a solution process using a silver nano material, a graphen material, or a mixture of silver nano and graphene.
The method of claim 7,
Wherein the anode serves also as a reflective layer, and the cathode is formed as a transparent electrode.
The method of claim 7,
Wherein the planarization layer has a thickness that embeds at least a groove formed on a surface of the paper layer.
KR1020150036582A 2015-03-17 2015-03-17 Organic light emitting diode and manufacturing method thereof KR101956419B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150036582A KR101956419B1 (en) 2015-03-17 2015-03-17 Organic light emitting diode and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150036582A KR101956419B1 (en) 2015-03-17 2015-03-17 Organic light emitting diode and manufacturing method thereof

Publications (2)

Publication Number Publication Date
KR20160112039A KR20160112039A (en) 2016-09-28
KR101956419B1 true KR101956419B1 (en) 2019-03-11

Family

ID=57101309

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150036582A KR101956419B1 (en) 2015-03-17 2015-03-17 Organic light emitting diode and manufacturing method thereof

Country Status (1)

Country Link
KR (1) KR101956419B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106648259B (en) * 2017-01-09 2020-07-03 京东方科技集团股份有限公司 Preparation method of touch screen, touch screen and display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3890317B2 (en) 2003-04-30 2007-03-07 キヤノン株式会社 Light emitting element

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100959108B1 (en) * 2008-08-28 2010-05-25 삼성모바일디스플레이주식회사 Organic light emitting diode display
KR20160082344A (en) * 2014-12-30 2016-07-08 도레이케미칼 주식회사 Flexible orgaic light emitting diodes devices and Manufacturing method thereof
KR20160081616A (en) * 2014-12-31 2016-07-08 도레이케미칼 주식회사 Substrate for flexible transistor and Flexible organic thin-film transistor containing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3890317B2 (en) 2003-04-30 2007-03-07 キヤノン株式会社 Light emitting element

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Electrochem. Solid-State Lett. 2011 volume 14, issue 6
Volume 25, Issue 34

Also Published As

Publication number Publication date
KR20160112039A (en) 2016-09-28

Similar Documents

Publication Publication Date Title
US9905763B2 (en) Opto-electrical devices incorporating metal nanowires
CN102484925B (en) Organic electroluminescent device
TWI500713B (en) Methods and compositions for ink jet deposition of conductive features
US20060152147A1 (en) Electroluminescent device and method for preparing the same
Xiong et al. Realizing 17.0% external quantum efficiency in red quantum dot light-emitting diodes by pursuing the ideal inkjet-printed film and interface
KR102034366B1 (en) Organic Thin Film Laminates and Organic Electroluminescent Devices
Aleksandrova Specifics and challenges to flexible organic light-emitting devices
Zhao et al. High‐Speed Fabrication of All‐Inkjet‐Printed Organometallic Halide Perovskite Light‐Emitting Diodes on Elastic Substrates
KR20050085858A (en) Method of fabricating devices by low pressure cold welding
CN105206761B (en) A kind of light emitting diode and preparation method thereof
WO2006104069A1 (en) Gate insulating film, organic transistor, method for manufacturing organic el display, and display
CN101926218A (en) Transparent plate with transparent conductive film and organic electroluminescent device
WO2007015465A1 (en) Production method of organic film heated transfer body, organic film heated transfer body
CN109244263B (en) Lighting device using organic light emitting diode
KR20130046435A (en) Organic electroluminescent element
KR20080062907A (en) Fabricating methode of electroluminescent device
US20050282307A1 (en) Particulate for organic and inorganic light active devices and methods for fabricating the same
KR101956419B1 (en) Organic light emitting diode and manufacturing method thereof
KR20150060944A (en) Method for producing an optoelectronic assembly, and optoelectronic assembly
KR101478879B1 (en) A preparation method of a device comprising a charge generation layer with a micro-pattern
JP4423195B2 (en) Electroluminescent device with color filter
DE102013106815A1 (en) Optoelectronic component and method for producing an optoelectronic component
CN107887524B (en) Electrode, organic light emitting diode including the same, liquid crystal display device including the same, and organic light emitting display device including the same
US20070236138A1 (en) Organic light-emitting diodes with nanostructure film electrode(s)
CN108054285B (en) Preparation method of quantum dot film, electroluminescent device and preparation method thereof

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant