CN100367531C - Organic luminous component with optical efficiency raising structure - Google Patents
Organic luminous component with optical efficiency raising structure Download PDFInfo
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- CN100367531C CN100367531C CNB031592937A CN03159293A CN100367531C CN 100367531 C CN100367531 C CN 100367531C CN B031592937 A CNB031592937 A CN B031592937A CN 03159293 A CN03159293 A CN 03159293A CN 100367531 C CN100367531 C CN 100367531C
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Abstract
The present invention provides an organic luminous component with an optical efficiency raising structure, which comprises a plurality of picture elements which comprise a first electrode, an organic luminous layer formed on the first electrode, a second electrode formed on the organic luminous layer, and a first lifting frame for light efficiency, wherein the first lifting frame for light efficiency is formed on the second electrode, and thus, light emitted by the organic luminous layer can be emitted by the lifting frame of light efficiency from the first light emitting surface of the first lifting frame of light efficiency. The first lifting frame of light efficiency of the present invention is a single optical structure, and has the function of changing the angle of the first light emitting surface to make the light which can originally generate light total reflection refract light for raising the light efficiency.
Description
Technical field
The present invention is particularly to a kind of organic luminescent assembly that optical efficiency promotes structure that has relevant for a kind of organic luminescent assembly.
Background technology
(organic light emitting devices/polymerlight emitting devices, light extraction efficiency OLED/PLED) is low, is the problem points of this assembly development always for organic luminescent assembly now.Mainly be the double influence that is subjected to total reflection and waveguiding effect, so that internal quantum (internal quantum efficiency) is even up to 100%, but actual light extraction efficiency is still low.
The generalized section of the pixel of traditional organic luminescent assembly as shown in Figure 3.This pixel comprises: a substrate 10; One reflective anode 20 is formed on the substrate 10; One organic luminous layer 22 is formed on the above-mentioned 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.This conventional pixel does not increase by first optical efficiency and promotes structure as the present invention.As shown in Figure 3, the light L1 that the edge sends in the organic luminous layer 22, when arriving the interface of protective layer 900 and air, if total reflection can take place when satisfying incidence angle θ 1 greater than the condition of critical angle, the light of total reflection is Lt.
People such as M ller are at J.of Appl.Phys., Vol.91, and No.5, pp.3324-3327 uses hemispherical lenticule array (hemispherical micro-lens arrays) to promote Organic Light Emitting Diode (OLED in 2002; Organic light emitting diode) light extraction efficiency.See also Fig. 1, show the generalized section of the pixel of the designed OLED of M ller, label 100 expression glass substrates, 200 is transparent anode, and 220 is organic luminous layer, and 240 is nontransparent negative electrode, and label 300 is hemispherical lenticule array.Utilize to have this complicated and most hemispheric interface of array on each pixel, change the rising angle of light, yet the light extraction efficiency that can promote is still not high.
Summary of the invention
In view of this, purpose of the present invention is for the organic luminescent assembly that provides a kind of light extraction efficiency high is provided.The present invention designs special optical efficiency and promotes structure, places the light path that of organic luminescent assembly.Promote the special appearance profile of structure by optical efficiency of the present invention, make total reflection effect lower, to promote the light extraction efficiency of organic luminescent assembly.
For reaching purpose of the present invention, organic luminescent assembly of the present invention comprises a plurality of pixels, and this pixel comprises: one first electrode; One organic luminous layer is formed on first electrode; One second electrode is formed on the organic luminous layer; One first optical efficiency promotes structure, is formed on second electrode, makes that the light that organic luminous layer sent can be by first optical efficiency lifting structure by one first exiting surface bright dipping of first optical efficiency lifting structure; And one second optical efficiency promote structure, be formed at this first optical efficiency and promote on structure, make light that this luminescent layer sent can be in regular turn promote that structure and second optical efficiency promote structure and the one second exiting surface bright dipping that promotes structure by second optical efficiency by this first optical efficiency.It is single optical structure that first optical efficiency promotes structure, and it act as the angle that changes this first exiting surface, makes the light that can produce light total reflection originally can reflect bright dipping.
Description of drawings
Fig. 1 shows the generalized section of the pixel of the organic luminescent assembly that has the lenticule structure of arrays traditionally.
Fig. 2 shows that the present invention has the essential structure of pixel that optical efficiency promotes the organic luminescent assembly of structure.
Fig. 3 shows the generalized section of the pixel of the organic luminescent assembly that does not have optical efficiency to promote structure traditionally.
Fig. 4 shows the generalized section of pixel of the organic luminescent assembly of the present invention's first specific embodiment.
Fig. 5 shows the generalized section of pixel of the organic luminescent assembly of the present invention's second specific embodiment.
Fig. 6 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 3rd specific embodiment.
Fig. 7 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 4th specific embodiment.
Fig. 8 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 5th specific embodiment.
Fig. 9 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 6th specific embodiment.
Figure 10 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 7th specific embodiment.
Figure 11 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 8th specific embodiment.
Figure 12 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 9th specific embodiment.
Figure 13 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the tenth specific embodiment.
Figure 14 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 11 specific embodiment.
Figure 15 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 12 specific embodiment.
Figure 16 shows the generalized section of the pixel of the organic luminescent assembly that has the lenticule structure of arrays traditionally.
Symbol description:
Prior art-
The 100-glass substrate,
The 200-transparent anode,
The 220-organic luminous layer,
The nontransparent negative electrode of 240-,
The hemispherical lenticule array of 300-,
900,920-protective layer,
The present invention-
1-first electrode,
The 2-organic luminous layer,
3-second electrode,
4-first optical efficiency promotes structure,
4a-first optical efficiency promotes first exiting surface of structure 4,
The 10-substrate,
The reflective anode of 20-,
The 22-organic luminous layer,
The 24-transparent cathode,
The 26-protective layer,
30-first optical efficiency promotes structure,
31-first optical efficiency promotes first exiting surface of structure 30 or 35,
The first surface of 311-first exiting surface 31,
The second surface of 312-first exiting surface 31,
32-first optical efficiency promotes the bottom surface of structure 30 or 35,
33-first optical efficiency promotes the sidewall of structure 35,
35-first optical efficiency promotes structure,
40-first optical efficiency promotes structure,
41-first optical efficiency promotes first exiting surface of structure 40 or 45,
The first surface of 411-first exiting surface 41,
The second surface of 412-first exiting surface 41,
42-first optical efficiency promotes the bottom surface of structure 40 or 45,
43-first optical efficiency promotes the sidewall of structure 45,
45-first optical efficiency promotes structure,
50-first optical efficiency promotes structure,
51-first optical efficiency promotes first exiting surface of structure 50 or 55,
53-first optical efficiency promotes the sidewall of structure 55,
55-first optical efficiency promotes structure,
61,62,63,64,65,66-second optical efficiency promotes structure,
612,622,632,643,652,662-second optical efficiency promotes second exiting surface of structure.
Embodiment
Fig. 2 shows that the present invention has the essential structure of pixel that optical efficiency promotes the organic luminescent assembly of structure.This pixel comprises: one first electrode 1 is to be formed on the glass substrate; One organic luminous layer 2 is formed on first electrode 1; One second electrode 3 is formed on the organic luminous layer 2; And one first optical efficiency promote structure 4, be formed on second electrode.Make that the light that organic luminous layer 2 sent can be by first optical efficiency lifting structure 4 by one first exiting surface 4a bright dipping of first optical efficiency lifting structure 4.Wherein first optical efficiency lifting structure 4 is a single optical structure, can reduce the light total reflection effect.
Fig. 4 shows the generalized section of pixel of the organic luminescent assembly of the present invention's first specific embodiment.This pixel 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 first optical efficiency promote structure 30, then be formed on the protective layer 26.
Wherein first optical efficiency lifting structure 30 has one first exiting surface 31 and a bottom surface 32.First exiting surface 31 more includes a first surface 311 and a second surface 312.The appearance profile of first surface 311 is a tabular surface, and second surface 312 is positioned at the side of first surface 311, and appearance profile is cambered surface, is connected with bottom surface 32.Wherein second surface 312 is made of a plurality of slope gradual changes and continuous little inclined-plane.
As shown in Figure 4, the light L1 that the edge sends in the organic luminous layer 22 (position is identical with traditional Fig. 3), when arriving the second surface 312 of first optical efficiency lifting structure 30, because the appearance profile of second surface 312 is a cambered surface, incidence angle reduces, no longer greater than critical angle, so light L1 can total reflection, and can be through refraction with light Lr bright dipping.That is to say that the organic luminous layer edge of prior art OLED dot structure can produce the light of total reflection originally, the improvement by optical efficiency lifting structure of the present invention is reflected and bright dipping, therefore can be lifted out optical efficiency.
Fig. 5 shows the generalized section of pixel of the organic luminescent assembly of the present invention's second specific embodiment.This pixel comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position does not therebetween repeat them here as shown in Figure 4.Fig. 5 and Fig. 4 difference are the structure that first optical efficiency promotes structure.In Fig. 5, it is to be arranged on the protective layer 26 that first optical efficiency promotes structure 35, and it has one first exiting surface 31, a bottom surface 32 and a sidewall 33.First exiting surface 31 comprises a first surface 311 and a second surface 312.The appearance profile of first surface 311 is a tabular surface, and second surface 312 is positioned at the side of first surface 311, and appearance profile is a cambered surface.Second surface 312 is connected with bottom surface 32 by sidewall 33.
With Fig. 4 similarly, promote structure by optical efficiency of the present invention, can make originally that the organic luminous layer edge of prior art OLED dot structure can produce the light of total reflection, reflected and bright dipping, therefore can be lifted out optical efficiency.
Fig. 6 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 3rd specific embodiment.This pixel comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position does not therebetween repeat them here as shown in Figure 4.Fig. 6 and Fig. 4 difference are the structure that first optical efficiency promotes structure.In Fig. 6, it is to be arranged on the protective layer 26 that first optical efficiency promotes structure 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 the appearance profile of second surface 412 is the inclined-plane, is positioned at the side of first surface 411, is connected with bottom surface 42.
With Fig. 4 similarly, because the appearance profile of second surface 412 is the inclined-plane, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence that first optical efficiency promotes structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Fig. 7 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 4th specific embodiment.This pixel equally also comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position does not therebetween repeat them here as shown in Figure 4.Fig. 7 and Fig. 4 difference are the structure that first optical efficiency promotes structure.In Fig. 7, it is to be arranged on the protective layer 26 that first optical efficiency promotes structure 45, 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.Wherein the appearance profile of first surface 411 is a tabular surface, and the appearance profile of second surface 412 is the inclined-plane, and is positioned at the side of first surface 411.Second surface 412 is connected with bottom surface 42 by sidewall 43.
With Fig. 6 similarly, because the appearance profile of second surface 412 is the inclined-plane, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence that first optical efficiency promotes structure 45, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Fig. 8 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 5th specific embodiment.This pixel equally also comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position does not therebetween repeat them here as shown in Figure 4.Fig. 8 and Fig. 4 difference are the structure that first optical efficiency promotes structure.In Fig. 8, first optical efficiency promotes structure 50 and has one first exiting surface 51 and a bottom surface 52.Wherein the appearance profile of first exiting surface 51 is single cambered surface.
With Fig. 4 similarly because the appearance profile of first exiting surface 51 is a cambered surface, make the rim ray that can produce total reflection originally no longer satisfy total reflection condition because of the existence of this structure, make the bright dipping of rim ray refrangible, thereby be lifted out optical efficiency.
Fig. 9 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 6th specific embodiment.This pixel equally also comprises: a substrate 10, one reflective anode 20, one organic luminous layers 22, one transparent cathodes 24, and a protective layer 26, relative position does not therebetween repeat them here as shown in Figure 4.Fig. 9 and Fig. 4 difference are the structure that first optical efficiency promotes structure.In Fig. 9, it is to be arranged on the protective layer 26 that first optical efficiency promotes structure 55, and it has one first exiting surface 51, a bottom surface 52 and a sidewall 53, the first exiting surfaces 51 and is connected by sidewall 53 with bottom surface 52.Wherein the appearance profile of first exiting surface 51 is a cambered surface.
With Fig. 8 similarly because the appearance profile of first exiting surface 51 is a cambered surface, make the rim ray that can produce total reflection originally no longer satisfy total reflection condition because of the existence of this structure, make the bright dipping of rim ray refrangible, thereby be lifted out optical efficiency.
Figure 10 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 7th specific embodiment.Please consult Fig. 4 and Figure 10 simultaneously.Figure 10 and Fig. 4 difference are that Figure 10 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 61 more on the structure 30.Therefore the light that sent of organic luminous layer 22 can promote structure 30 and 61 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 612 bright dippings of structure 61 by second optical efficiency.Put in order (from large to small) of refractive index is: protective layer 26, first optical efficiency promote structure 30 and second optical efficiency promotes structure 61.
With Fig. 4 in the same manner, because it is cambered surface that first optical efficiency promotes the appearance profile of the second surface 312 of structure 30, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Figure 11 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 8th specific embodiment.Please consult Fig. 5 and Figure 11 simultaneously.Figure 11 and Fig. 5 difference are that Figure 11 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 62 more on the structure 35.Therefore the light that sent of organic luminous layer 22 can promote structure 35 and 62 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 622 bright dippings of structure 62 by second optical efficiency.Put in order (from large to small) of refractive index is: protective layer 26, first optical efficiency promote structure 35 and second optical efficiency promotes structure 62.
With Fig. 5 in the same manner, because it is cambered surface that first optical efficiency promotes the appearance profile of the second surface 312 of structure 35, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Figure 12 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 9th specific embodiment.Please consult Fig. 6 and Figure 12 simultaneously.Figure 12 and Fig. 6 difference are that Figure 12 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 63 more on the structure 40.Therefore the light that sent of organic luminous layer 22 can promote structure 40 and 63 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 632 bright dippings of structure 63 by second optical efficiency.Wherein put in order (from large to small) of refractive index be: protective layer 26, first optical efficiency promote structure 40 and second optical efficiency promotes structure 63.
With Fig. 6 in the same manner, because it is the inclined-plane that first optical efficiency promotes the appearance profile of the second surface 412 of structure 40, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Figure 13 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the tenth specific embodiment.Please consult Fig. 7 and Figure 13 simultaneously.Figure 13 and Fig. 7 difference are that Figure 13 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 64 more on the structure 45.Therefore the light that sent of organic luminous layer 22 can promote structure 45 and 64 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 642 bright dippings of structure 64 by second optical efficiency.Wherein put in order (from large to small) of refractive index be: protective layer 26, first optical efficiency promote structure 45 and second optical efficiency promotes structure 64.
With Fig. 7 in the same manner, because it is the inclined-plane that first optical efficiency promotes the appearance profile of the second surface 412 of structure 45, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Figure 14 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 11 specific embodiment.Please consult Fig. 8 and Figure 14 simultaneously.Figure 14 and Fig. 8 difference are that Figure 14 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 65 more on the structure 50.Therefore the light that sent of organic luminous layer 22 can promote structure 50 and 65 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 652 bright dippings of structure 65 by second optical efficiency.Wherein put in order (from large to small) of refractive index be: protective layer 26, first optical efficiency promote structure 50 and second optical efficiency promotes structure 65.
With Fig. 8 in the same manner, because it is cambered surface that first optical efficiency promotes the appearance profile of first exiting surface 51 of structure 50, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Figure 15 shows the generalized section of pixel of the organic luminescent assembly of the present invention's the 12 specific embodiment.Please consult Fig. 9 and Figure 15 simultaneously.Figure 15 and Fig. 9 difference are that Figure 15 promotes in first optical efficiency and is provided with one second optical efficiency lifting structure 66 more on the structure 55.Therefore the light that sent of organic luminous layer 22 can promote structure 55 and 66 by first and second optical efficiency in regular turn, and is promoted one second exiting surface, 662 bright dippings of structure 66 by second optical efficiency.Wherein put in order (from large to small) of refractive index be: protective layer 26, first optical efficiency promote structure 55 and second optical efficiency promotes structure 66.
With Fig. 9 in the same manner, because it is cambered surface that first optical efficiency promotes the appearance profile of first exiting surface 51 of structure 55, the rim ray that feasible script can produce total reflection no longer satisfies total reflection condition because of the existence of this structure, makes the bright dipping of rim ray refrangible, thereby is lifted out optical efficiency.
Be applicable to that reflective anode 20 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.And organic luminous layer 22 can be by hole transmission layer (Holet ransport layer; HTL), luminescent layer (Emitting layer; EML) and electron transfer layer (Electron transportlayer; ETL) form.Transparent cathode 24 can be adopted the mode of plating transparent metal film.Protective layer 26 can be used high molecular polymer (polymer).
First and second optical efficiency of the present invention promote structure and also can be high molecular polymer, and its function is to lower total reflection.First and second optical efficiency promote the making of structure, can adopt technology such as the plated film of manufacture of semiconductor, little shadow, etching.Perhaps, first and second optical efficiency promote structure also can adopt thermoplastics, utilizes the moulding of mould oil pressure.
Computer Simulation:
With the structure of above-mentioned Fig. 3 (prior art), Fig. 4 (the present invention), Fig. 6 (the present invention), Fig. 8 (the present invention) and Figure 11 (the present invention), and the structure (following Figure 16) with protective layer of lenticule array is carried out Computer Simulation.
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%, pixel wide is 2000 μ m.
Fig. 3 (prior art): the thickness of protective layer 900 is 1000 μ m, refractive index n=1.4.
Fig. 4 (the present invention, single flat-head type): the thickness of protective layer 26 is 1000 μ m, refractive index n=1.46.The thickness that first optical efficiency promotes structure 30 is 275 μ m, refractive index n=1.4, and the width of first surface 311 is 550 μ m, the radius of curvature of second surface 312 (curvature radius) is 1500 μ m.
Fig. 6 (the present invention, single flat-head type): the thickness of protective layer 26 is 1000 μ m, refractive index n=1.46.The thickness that first optical efficiency promotes structure 40 is 200 μ m, refractive index n=1.4, and the width of first surface 411 is 1000 μ m.
Fig. 8 (the present invention, single semi-sphere type): the thickness of protective layer 26 is 1000 μ m, refractive index n=1.46.The thickness that first optical efficiency promotes structure 50 is 200 μ m, and the radius of curvature of refractive index n=1.4, the first exiting surfaces 51 (curvature radius) is 1500 μ m.
Figure 11 (the present invention, pairing mirror type): the thickness of protective layer 26 is 700 μ m, refractive index n=1.46.The thickness that first optical efficiency promotes structure 50 is 575 μ m, refractive index n=1.4, and the width of first surface 311 is 1750 μ m, the radius of curvature of second surface 312 (curvature radius) is 1800 μ m.The thickness that second optical efficiency promotes structure 62 is 10 μ m, refractive index n=1.3.
Figure 16 (prior art, lenticule digit group type): the thickness of protective layer 920 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 table 1.The result shows that OLED pixel structure of the present invention can significantly be lifted out optical efficiency.
Table 1
| Figure number | Optical efficiency promotes structure | Light extraction efficiency |
| Fig. 3 (prior art) | Do not have | 10％ |
| Figure 16 (prior art) | The lenticule digit group type | 13％ |
| Fig. 4 (the present invention) | Single flat-head type | 19％ |
| Fig. 6 (the present invention) | Single flat-head type | 19％ |
| Fig. 8 (the present invention) | Single semi-sphere type | 18％ |
| Figure 11 (the present invention) | Pairing mirror type | 23％ |
Comprehensively above-mentioned, the present invention will design special optical efficiency and promote structure, place the light path that of organic luminescent assembly.Promote structure by optical efficiency of the present invention, total reflection effect is lowered, to promote the light extraction efficiency of organic luminescent assembly.
Claims (7)
1. one kind has the organic luminescent assembly that optical efficiency promotes structure, and it comprises a plurality of pixels, and this pixel comprises at least:
One first electrode;
One organic luminous layer is formed on this first electrode;
One second electrode is formed on this organic luminous layer; And
One first optical efficiency promotes structure, is formed on this second electrode, makes light that this organic luminous layer sent promote structure by this first optical efficiency and is promoted one first exiting surface bright dipping of structure by first optical efficiency; And
One second optical efficiency promotes structure, be formed at this first optical efficiency and promote on structure, make light that this organic luminous layer sent promote that structure and second optical efficiency promote structure and the one second exiting surface bright dipping that promotes structure by second optical efficiency by this first optical efficiency in regular turn;
Wherein this first optical efficiency lifting structure is a single optical structure, and it act as the angle that changes this first exiting surface, to increase the refraction light emission rate.
2. the organic luminescent assembly with optical efficiency lifting structure according to claim 1, wherein this first electrode is a reflective anode, this second electrode is a transparent cathode, and this first optical efficiency lifting structure is formed on this transparent cathode.
3. the organic luminescent assembly with optical efficiency lifting structure according to claim 2, wherein this pixel more comprises a substrate and a protective layer, wherein
This reflective anode is formed on this substrate, and
This protective layer is formed at this transparent cathode and this first optical efficiency promotes between the structure, and the refractive index of this protective layer promotes the refractive index of structure greater than this first optical efficiency.
4. according to claim 1 have an organic luminescent assembly that optical efficiency promotes structure, and wherein the appearance profile of this first exiting surface is that a cambered surface or is by a plurality of slope gradual changes and the continuous face that the inclined-plane constituted or above both combination.
5. the organic luminescent assembly with optical efficiency lifting structure according to claim 1, wherein this first exiting surface comprises a first surface and a second surface, the appearance profile of this first surface is a tabular surface or a cambered surface, this second surface is the side that is positioned at this first surface, and appearance profile is that a cambered surface, an inclined-plane or are by a plurality of slope gradual changes and the continuous face that the inclined-plane constituted.
6. according to claim 4 or 5 described organic luminescent assemblies with optical efficiency lifting structure, wherein this first optical efficiency lifting structure has more a bottom surface and a sidewall, and this first exiting surface is connected by this sidewall with this bottom surface.
7. the organic luminescent assembly with optical efficiency lifting structure according to claim 1, wherein this second optical efficiency lifting structure has one the 3rd surface, opposition side at this second exiting surface, and fitting with first exiting surface that first optical efficiency promotes structure in the 3rd surface, constitutes a pairing mirror and make this first and second optical efficiency promote structure.
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| CN109841753A (en) * | 2019-02-02 | 2019-06-04 | 京东方科技集团股份有限公司 | Light removing layer and preparation method thereof, display panel |
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| CN1435894A (en) * | 2002-01-29 | 2003-08-13 | 国际商业机器公司 | Organic LED device and mfg. method thereof |
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2003
- 2003-09-15 CN CNB031592937A patent/CN100367531C/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| JPH10223367A (en) * | 1997-02-04 | 1998-08-21 | Mitsubishi Chem Corp | Organic electric field luminescence element |
| US20020118271A1 (en) * | 1998-06-05 | 2002-08-29 | Seji Mashimo | Exposure unit for image forming apparatus using electrophotographic system, electrophotographic image forming apparatus |
| US20010035713A1 (en) * | 2000-04-21 | 2001-11-01 | Semiconductor Energy Laboratory Co., Ltd. | Self-light emitting device and electrical appliance using the same |
| CN1389085A (en) * | 2000-08-23 | 2003-01-01 | 出光兴产株式会社 | Organic el display device |
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