CN1599526A - Organic luminous component with optical efficiency raising structure - Google Patents
Organic luminous component with optical efficiency raising structure Download PDFInfo
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Abstract
This invention relates to an organic light emit component with light effect upgrade structure including multiple picture primes constituting a first electrode, an organic light emitting layer formed on the first electrode, a second electrode formed on the organic light emitting layer and a light effect upgrade structure formed on the second electrode, so that light emitted from the organic light emit layer can be mitted via the light effect upgrade structure composed of at least two layers with steadily changed index of refraction the further the larger.
Description
Technical field
The present invention relates to a kind of organic luminescent assembly, refer in particular to a kind of organic luminescent assembly that optical efficiency promotes structure that has.
Background technology
Organic luminescent assembly (organic light emitting devices/polymerlight emitting devices, OLED/PLED) problem that light extraction efficiency is low, restricting the development of assembly always, mainly be to be subjected to the total reflection of light and the double influence of waveguiding effect, so that internal quantum (internal quantum efficiency) is even up to 100%, but actual light extraction efficiency is still very low.Fig. 2 is the generalized section of the picture element of traditional organic luminescent assembly.This picture element comprises: a substrate 10; One reflective anode 20 is formed on the substrate 10; One organic luminous layer 22 is formed on the reflective anode 20; One transparent cathode 24 is formed on the organic luminous layer 22; One protective layer 900 is formed on the transparent cathode 24.The light L that sends in the organic luminous layer 22
1, can arrive the sidewall 901 of protective layer 900, and bright dipping smoothly.People such as M ller are at J.of Appl.Phys., Vol.91, and No.5, pp.3324-3327 uses in 2002 hemispherical lenticule array (hemispherical mi cro-lens arrays) to promote Organic Light Emitting Diode (OLED; Organic light emitting diode) light extraction efficiency.Fig. 1 shows the generalized section of the picture element of the designed OLED of M ller, label 100 expression glass substrates, and 200 is transparent anode, and 220 is organic luminous layer, and 240 is nontransparent negative electrode, and label 300 is hemispherical lenticule array.But its light extraction efficiency is still not high.
Summary of the invention
The objective of the invention is to; for addressing the above problem; provide a kind of light extraction efficiency high organic luminescent assembly; the thickness of protective layer in traditional organic luminescent assembly is reduced; and the optical efficiency lifting layer of two-layer at least gradually changed refractive index is arranged at out in the light path, utilizes the refracting characteristic of light in the different refractivity medium, and then change the conduct route of light; feasible script can't bright dipping part light become can bright dipping light, to reach the purpose that is lifted out optical efficiency.
The objective of the invention is to realize by following technological means: a kind of organic luminescent assembly with optical efficiency lifting structure, comprise a plurality of picture elements, picture element comprises at least: one first electrode; One is formed at the organic luminous layer on first electrode; One is formed at second electrode on the organic luminous layer; And one be formed at and make light that organic luminous layer sent to promote an exiting surface of structure and the optical efficiency of bright dipping promotes structure by optical efficiency on second electrode; Wherein optical efficiency promotes the optical efficiency that structure comprises two-layer at least gradually changed refractive index and promotes layer, and it is bigger more to promote the refractive index of layer away from the optical efficiency of light direction.
Described organic luminescent assembly with optical efficiency lifting structure, first electrode is a reflective anode, second electrode is a transparent cathode, and optical efficiency lifting structure is formed on the transparent cathode; Organic luminescent assembly also comprises: a substrate, and reflective anode is formed on the substrate; And one be formed at transparent cathode and optical efficiency and promote protective layer between the structure; wherein the optical efficiency of close protective layer promotes the refractive index maximum of layer; promote the refractive index minimum of layer, and the refractive index of protective layer promotes the refractive index of layer greater than the optical efficiency of close protective layer away from the optical efficiency of protective layer.
Described organic luminescent assembly with optical efficiency lifting structure, the appearance profile of exiting surface is a tabular surface.
Described organic luminescent assembly with optical efficiency lifting structure, optical efficiency promotes structure and comprises that one reduces the light total reflection layer, reduce the light total reflection layer and be positioned at the outermost layer that optical efficiency promotes structure sheaf, reduce the light total reflection layer and have first exiting surface that the part light that can make script can produce light total reflection can pass through the refraction bright dipping.
Described organic luminescent assembly with optical efficiency lifting structure, the appearance profile of first exiting surface is a cambered surface.
Described have an organic luminescent assembly that optical efficiency promotes structure, and the appearance profile of first exiting surface is a face that is made of a plurality of slope gradual changes and continuous inclined-plane.
Described organic luminescent assembly with optical efficiency lifting structure, first exiting surface comprises a first surface and a second surface, and the appearance profile of first surface is a tabular surface, and the appearance profile of second surface is a cambered surface, and is positioned at the side of first surface.
Described organic luminescent assembly with optical efficiency lifting structure, first exiting surface comprises a first surface and a second surface, the appearance profile of first surface is a tabular surface, the appearance profile face of second surface is a face that is made of a plurality of slope gradual changes and continuous inclined-plane, and is positioned at the side of first surface.
Described organic luminescent assembly with optical efficiency lifting structure, first exiting surface comprises a first surface and a second surface, and the appearance profile of first surface is a tabular surface, and the appearance profile of second surface is an inclined-plane, and is positioned at the side of first surface.
Described organic luminescent assembly with optical efficiency lifting structure reduces the light total reflection layer and also has a bottom surface and a sidewall, and first exiting surface is connected with bottom surface mat sidewall.
The invention has the advantages that: the present invention reduces the thickness of protective layer in the organic luminescent assembly; and the optical efficiency that increases two-layer at least gradually changed refractive index promotes layer and is arranged at out in the light path; therefore, can effectively be lifted out optical efficiency because of the change of light conduct route.
Description of drawings
Fig. 1 is the generalized section of the picture element of traditional organic luminescent assembly with lenticule structure of arrays.
Fig. 2 is the generalized section of the picture element of traditional organic luminescent assembly that does not have optical efficiency lifting structure.
Fig. 3 is the generalized section of picture element of the organic luminescent assembly of first embodiment of the invention.
Fig. 4 is the generalized section of picture element of the organic luminescent assembly of second embodiment of the invention.
Fig. 5 is the generalized section of picture element of the organic luminescent assembly of third embodiment of the invention.
Fig. 6 is the generalized section of picture element of the organic luminescent assembly of fourth embodiment of the invention.
Fig. 7 is the generalized section of picture element of the organic luminescent assembly of fifth embodiment of the invention.
Fig. 8 is the generalized section of picture element of the organic luminescent assembly of sixth embodiment of the invention.
Fig. 9 is the generalized section of picture element of the organic luminescent assembly of seventh embodiment of the invention.
Figure 10 is the generalized section of the picture element of traditional organic luminescent assembly with lenticule structure of arrays.
Embodiment
Describe 26S Proteasome Structure and Function of the present invention in detail below in conjunction with accompanying drawing.
Fig. 3 is the generalized section of picture element of the organic luminescent assembly of first embodiment of the invention.Picture element comprises: a substrate 10; One reflective anode 20 is formed on the substrate 10; One organic luminous layer 22 is formed on the reflective anode 20; One transparent cathode 24 is formed on the organic luminous layer 22; One protective layer 26 is formed on the transparent cathode 24; And one optical efficiency promote structure S, be formed on the protective layer 26.Optical efficiency promotes structure S and comprises that first optical efficiency near protective layer 26 promotes the second optical efficiency lifting layer 40 of layer 30 and away from protective layer 26.Refractive index by being discharged to little order greatly is: protective layer 26, the first optical efficiency promote layer 30, the second optical efficiency and promote layer 40.
The preferable design criterion of the present invention is; the thickness of protective layer 26 of the present invention (as shown in Figure 3) is littler than the thickness of traditional protective layer 900 (as shown in Figure 2), makes gross thickness that protective layer 26 of the present invention and optical efficiency promote structure S equate substantially with the thickness of traditional protective layer 900.For example, in following Computer Simulation, the thickness of traditional protection layer 900 is 1000 μ m, and the thickness of protective layer 26 of the present invention is 700 μ m, and the thickness that first and second optical efficiency promote layer 30 and 40 respectively is 150 μ m.Like this, the light L that is sent in the organic luminous layer among Fig. 3 22
1(position is identical with traditional Fig. 2) can be because of the change of light path, and the refraction through first and second optical efficiency lifting layer 30 and 40 promotes an exiting surface 41 of layer 40 with light L by second optical efficiency
2Bright dipping smoothly.That is, mat optical efficiency of the present invention promotes structure, can make originally can't bright dipping light because the refracting characteristic of light in the different refractivity medium, and then change the conduct route of light, feasible script can't bright dipping part light, become can bright dipping to reach the purpose that is lifted out optical efficiency.Therefore, the present invention can be lifted out optical efficiency.
As shown in Figure 3, the appearance profile that second optical efficiency promotes the exiting surface 41 of layer 40 is a tabular surface, but is not limited to this.The appearance profile that second optical efficiency promotes the exiting surface 41 of layer 40 also can be uneven surface, has the effect that reduces light total reflection and make second optical efficiency promote layer.For example, Fig. 4 is the generalized section of picture element of the organic luminescent assembly of second embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, one protective layers 26, and one first optical efficiency lifting layer 30, relative position therebetween is as Fig. 3.The difference of Fig. 4 and Fig. 3 is the structure that second optical efficiency promotes layer 40.In Fig. 4, it is a reduction light total reflection layer that second optical efficiency promotes layer 40, and it has one first exiting surface 41 and a bottom surface 42.First exiting surface 41 comprises a first surface 411 and a second surface 412.The appearance profile of first surface 411 is a tabular surface, and second surface 412 is positioned at the side of first surface 411, and its appearance profile is cambered surface, is connected with bottom surface 42.The appearance profile of second surface 412 also can be made of a plurality of slope gradual changes and continuous little inclined-plane.
As shown in Figure 4, the light L that is sent in the organic luminous layer 22
3, when arriving second optical efficiency and promoting the second surface 412 of layer 40, because the appearance profile of second surface 412 is a cambered surface, incidence angle reduces, can be greater than critical angle, so light L
3Can total reflection, and can be through refraction with light L
4Bright dipping.That is to say, known OLED image element structure can produce the light of total reflection under the situation that does not have second optical efficiency lifting layer 40 (reduction total reflection layers), but these light mats the present invention second optical efficiency promotes the improvement of the second surface 412 of layer 40, and is reflected bright dipping.
Therefore, in the organic luminescent assembly of the 4th figure, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 40, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the change bright dipping smoothly of light conduct route; (2) because the appearance profile of second surface 412 is a cambered surface, make the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.
Fig. 5 is the generalized section of picture element of the organic luminescent assembly of third embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position therebetween is as Fig. 3.The difference of Fig. 5 and Fig. 3 is the structure that second optical efficiency promotes layer 40.In Fig. 5, it is a reduction light total reflection layer that second optical efficiency promotes layer 40, and it has one first exiting surface 41, a bottom surface 42 and a sidewall 43.First exiting surface 41 comprises a first surface 411 and a second surface 412.The appearance profile of first surface 411 is a tabular surface, and second surface 412 is positioned at the side of first surface 411, and its appearance profile is a cambered surface.Second surface 412 is borrowed sidewall 43 and is connected with bottom surface 42.
Similar with Fig. 4, in the organic luminescent assembly of Fig. 5, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 40, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the change bright dipping smoothly of light conduct route; (2) because the appearance profile cambered surface that second surface 412 is makes the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.
Fig. 6 is the generalized section of picture element of the organic luminescent assembly of fourth embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position therebetween is as Fig. 3.The difference of Fig. 6 and Fig. 3 is the structure that second optical efficiency promotes layer.In Fig. 6, optical efficiency promotes structure S and comprises that one first optical efficiency promotes layer 30 and 1 second optical efficiency and promotes layer 50.It is a reduction light total reflection layer that second optical efficiency promotes layer 50, and it has one first exiting surface 51 and a bottom surface 52.First exiting surface 51 comprises a first surface 511 and a second surface 512.The appearance profile of first surface 511 is a tabular surface, and the appearance profile of second surface 512 is the inclined-plane, is positioned at the side of first surface 511, and is connected with bottom surface 52.
Similar with Fig. 4, in the organic luminescent assembly of Fig. 6, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 50, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the change bright dipping smoothly of light conduct route; (2) because the appearance profile of second surface 512 is the inclined-plane, make the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.
Fig. 7 is the generalized section of picture element of the organic luminescent assembly of fifth embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position therebetween is as Fig. 3.The difference of Fig. 7 and Fig. 3 is the structure that second optical efficiency promotes layer.In Fig. 7, optical efficiency promotes structure S and comprises that one first optical efficiency promotes layer 30 and 1 second optical efficiency and promotes layer 50.It is a reduction light total reflection layer that second optical efficiency promotes layer 50, and it has one first exiting surface 51, a bottom surface 52 and a sidewall 53.First exiting surface 51 comprises a first surface 511 and a second surface 512.The appearance profile of first surface 511 is a tabular surface, and the appearance profile of second surface 512 is the inclined-plane, is positioned at the side of first surface 511.Second surface 512 is connected with bottom surface 52 by sidewall 53.
Similar with Fig. 6, in the organic luminescent assembly of Fig. 7, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 50, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the bright dipping smoothly of light conduct route; (2) because the appearance profile of second surface 512 is the inclined-plane, make the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.
Fig. 8 is the generalized section of picture element of the organic luminescent assembly of sixth embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position therebetween is as Fig. 3.The difference of Fig. 8 and Fig. 3 is the structure that second optical efficiency promotes layer.In Fig. 8, optical efficiency promotes structure S and comprises that one first optical efficiency promotes layer 30 and 1 second optical efficiency and promotes layer 60.It is a reduction light total reflection layer that second optical efficiency promotes layer 60, and it has one first exiting surface 61 and a bottom surface 62.The appearance profile of first exiting surface 61 that Fig. 8 shows is a cambered surface.
Similar with Fig. 4, in the organic luminescent assembly of Fig. 8, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 60, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the change bright dipping smoothly of light conduct route; (2) because the appearance profile of first exiting surface 61 is a cambered surface, make the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.The appearance profile of first exiting surface 61 also can be made of a plurality of slope gradual changes and continuous little inclined-plane.
Fig. 9 is the generalized section of picture element of the organic luminescent assembly of seventh embodiment of the invention.Picture element comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position therebetween is as Fig. 3.The difference of Fig. 9 and Fig. 3 is the structure that second optical efficiency promotes layer.In Fig. 9, optical efficiency promotes structure S and comprises that one first optical efficiency promotes layer 30 and 1 second optical efficiency and promotes layer 60.It is a reduction light total reflection layer that second optical efficiency promotes layer 60, has one first exiting surface 61, a bottom surface 62 and a sidewall 63, the first exiting surfaces 61 and is connected with bottom surface 62 mat sidewalls 63.The appearance profile of first exiting surface 61 is a cambered surface.
Similar with Fig. 8, in the organic luminescent assembly of Fig. 9, have two factors can improve light extraction efficiency: (1) reduces the thickness of protective layer 26 thickness than traditional protection layer, and increase two-layer refractive index optical efficiency decrescence and promote layer 30 and 60, make that the light that arrives the protective layer sidewall originally and can't bright dipping can be because of the change bright dipping smoothly of light conduct route; (2) because the appearance profile of first exiting surface 61 is a cambered surface, make the light that can produce total reflection originally no longer satisfy total reflection condition, and bright dipping smoothly.
In the above-mentioned specific embodiment of the present invention, it is example to comprise that two-layer optical efficiency promotes layer all that optical efficiency promotes structure, but is not limited to this.Optical efficiency of the present invention promotes structure can comprise that 2 to 10 layers of optical efficiency promote layer, and the preferably is that 2 to 5 layers of optical efficiency promote layer, but is not limited to this.Optical efficiency of the present invention promotes structure and can comprise more multi-layered; but the multilayer optical efficiency promotes the refractive index of layer and is necessary for decrescence; that is the optical efficiency of the most close protective layer 26 promotes the refractive index maximum of layer, and promotes the refractive index minimum of layer away from the optical efficiency of protective layer 26.
Be applicable to that reflective anode of the present invention can be indium tin oxide (Indium-tin-oxide; ITO) or indium-zinc oxide (Indium-zinc-oxide; IZO) reflectance coating or high-work-function metal film are formed.Organic luminous layer can be by electric hole transport layer (Hole transport layer; HTL), luminescent layer (Emitting layer; EML) and electron transfer layer (Electron transport layer; ETL) form.Transparent cathode can be adopted the mode of plating transparent metal film.Protective layer can be used high molecular polymer (polymer).
Each layer optical efficiency of the present invention promotes layer and also can be high molecular polymer, and its making can be adopted technology such as the plated film of manufacture of semiconductor, little shadow, etching.Perhaps, optical efficiency promotes layer also can adopt thermoplastics, utilizes the moulding of mould oil pressure.
The Computer Simulation effect that below is the present invention and conventional construction compares:
Carry out Computer Simulation with above-mentioned conventional construction shown in Figure 2, structure of the present invention shown in Figure 3 and structure (as shown in figure 10) with lenticule array protective layer.Design parameter is as follows: the reflectivity of reflective anode 20 is 100%, and the thickness of organic luminous layer 22 is 0.15 μ m, mean refractive index 1.75, and the light transmittance of transparent cathode 24 is 100%, the picture element width is 2000 μ m.
The thickness of the protective layer 900 of conventional construction shown in Figure 2 is 1000 μ m, refractive index n=1.4.
The thickness of protective layer of the present invention 26 shown in Figure 3 is 700 μ m, refractive index n=1.46; The thickness that first optical efficiency promotes layer 30 is 150 μ m, refractive index n=1.4; The thickness that second optical efficiency promotes layer 40 is 150 μ m, refractive index n=1.3.
The thickness of the protective layer 920 of known, lenticule digit group type structure shown in Figure 10 is 1000 μ m, refractive index n=1.4; The radius of curvature of lenticule array is 10 μ m.
Computer artificial result is as shown in the table.The result shows that OLED picture element structure of the present invention can be lifted out optical efficiency.
| Figure number | Optical efficiency promotes structure | Light extraction efficiency |
| Fig. 2 | Do not have | 10％ |
| Figure 10 | The lenticule digit group type | 13％ |
| Fig. 3 | Two-layer optical efficiency promotes layer | 14％-16％ |
Comprehensively above-mentioned, the present invention reduces the thickness of protective layer in the organic luminescent assembly, and the optical efficiency lifting layer of the two-layer at least gradually changed refractive index of increase is arranged at out in the light path.So, can effectively be lifted out optical efficiency because of the change of light conduct route.
Claims (10)
1, a kind of organic luminescent assembly with optical efficiency lifting structure comprises a plurality of picture elements, and it is characterized in that: picture element comprises at least: one first electrode; One is formed at the organic luminous layer on first electrode; One is formed at second electrode on the organic luminous layer; And one be formed at and make light that organic luminous layer sent to promote an exiting surface of structure and the optical efficiency of bright dipping promotes structure by optical efficiency on second electrode; Wherein optical efficiency promotes the optical efficiency that structure comprises two-layer at least gradually changed refractive index and promotes layer, and it is bigger more to promote the refractive index of layer away from the optical efficiency of light direction.
2, the organic luminescent assembly with optical efficiency lifting structure according to claim 1, it is characterized in that: first electrode is a reflective anode, and second electrode is a transparent cathode, and optical efficiency lifting structure is formed on the transparent cathode; Organic luminescent assembly also comprises: a substrate, and reflective anode is formed on the substrate; And one be formed at transparent cathode and optical efficiency and promote protective layer between the structure; wherein the optical efficiency of close protective layer promotes the refractive index maximum of layer; promote the refractive index minimum of layer, and the refractive index of protective layer promotes the refractive index of layer greater than the optical efficiency of close protective layer away from the optical efficiency of protective layer.
3, the organic luminescent assembly with optical efficiency lifting structure according to claim 1, it is characterized in that: the appearance profile of exiting surface is a tabular surface.
4, the organic luminescent assembly with optical efficiency lifting structure according to claim 1, it is characterized in that: optical efficiency promotes structure and comprises that one reduces the light total reflection layer, reduce the light total reflection layer and be positioned at the outermost layer that optical efficiency promotes structure sheaf, reduce the light total reflection layer and have first exiting surface that the part light that can make script can produce light total reflection can pass through the refraction bright dipping.
5, the organic luminescent assembly with optical efficiency lifting structure according to claim 4, it is characterized in that: the appearance profile of first exiting surface is a cambered surface.
6, according to claim 4 have an organic luminescent assembly that optical efficiency promotes structure, it is characterized in that: the appearance profile of first exiting surface is a face that is made of a plurality of slope gradual changes and continuous inclined-plane.
7, the organic luminescent assembly with optical efficiency lifting structure according to claim 4, it is characterized in that: first exiting surface comprises a first surface and a second surface, the appearance profile of first surface is a tabular surface, the appearance profile of second surface is a cambered surface, and is positioned at the side of first surface.
8, the organic luminescent assembly with optical efficiency lifting structure according to claim 4, it is characterized in that: first exiting surface comprises a first surface and a second surface, the appearance profile of first surface is a tabular surface, the appearance profile face of second surface is a face that is made of a plurality of slope gradual changes and continuous inclined-plane, and is positioned at the side of first surface.
9, the organic luminescent assembly with optical efficiency lifting structure according to claim 4, it is characterized in that: first exiting surface comprises a first surface and a second surface, the appearance profile of first surface is a tabular surface, the appearance profile of second surface is an inclined-plane, and is positioned at the side of first surface.
10, the organic luminescent assembly with optical efficiency lifting structure according to claim 4, it is characterized in that: reduce the light total reflection layer and also have a bottom surface and a sidewall, first exiting surface is connected with bottom surface mat sidewall.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606436B (en) * | 2007-02-05 | 2011-06-08 | Lg化学株式会社 | Organic light-emitting device having improved light-emitting efficiency and method for fabricating the same |
| CN103887441A (en) * | 2012-12-19 | 2014-06-25 | 财团法人工业技术研究院 | Composite gradient refraction layer structure and packaging structure comprising same |
| CN103972266A (en) * | 2014-04-16 | 2014-08-06 | 京东方科技集团股份有限公司 | Organic electroluminescent display panel and display device |
| CN105185816A (en) * | 2015-10-15 | 2015-12-23 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method, and display device |
| CN108666344A (en) * | 2017-04-01 | 2018-10-16 | 上海和辉光电有限公司 | Display panel and display device |
| CN114335393A (en) * | 2022-01-04 | 2022-04-12 | 京东方科技集团股份有限公司 | Display panel and electronic device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6777871B2 (en) * | 2000-03-31 | 2004-08-17 | General Electric Company | Organic electroluminescent devices with enhanced light extraction |
| US6888305B2 (en) * | 2001-11-06 | 2005-05-03 | Universal Display Corporation | Encapsulation structure that acts as a multilayer mirror |
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2003
- 2003-09-15 CN CN031569307A patent/CN100407474C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606436B (en) * | 2007-02-05 | 2011-06-08 | Lg化学株式会社 | Organic light-emitting device having improved light-emitting efficiency and method for fabricating the same |
| US8253127B2 (en) | 2007-02-05 | 2012-08-28 | Lg Chem, Ltd. | Organic light-emitting device having improved light-emitting efficiency and method for fabricating the same |
| CN103887441A (en) * | 2012-12-19 | 2014-06-25 | 财团法人工业技术研究院 | Composite gradient refraction layer structure and packaging structure comprising same |
| CN103972266A (en) * | 2014-04-16 | 2014-08-06 | 京东方科技集团股份有限公司 | Organic electroluminescent display panel and display device |
| US9780336B2 (en) | 2014-04-16 | 2017-10-03 | Boe Technology Group Co., Ltd. | Organic light-emitting display panel and display device |
| CN105185816A (en) * | 2015-10-15 | 2015-12-23 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method, and display device |
| CN108666344A (en) * | 2017-04-01 | 2018-10-16 | 上海和辉光电有限公司 | Display panel and display device |
| CN114335393A (en) * | 2022-01-04 | 2022-04-12 | 京东方科技集团股份有限公司 | Display panel and electronic device |
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| CN100407474C (en) | 2008-07-30 |
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