CN102110779B - Organic light-emitting device - Google Patents
Organic light-emitting device Download PDFInfo
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- CN102110779B CN102110779B CN201010535201.3A CN201010535201A CN102110779B CN 102110779 B CN102110779 B CN 102110779B CN 201010535201 A CN201010535201 A CN 201010535201A CN 102110779 B CN102110779 B CN 102110779B
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Abstract
The invention discloses an organic light-emitting device which comprises an organic light-emitting panel and at least one light extraction enhancement film. The organic light-emitting panel comprises at least one light extraction surface. The at least one light extraction enhancement film is arranged on the light extraction surface of the organic light-emitting panel, wherein the light extraction enhancement film comprises a concave hole array, the concave hole array comprises a plurality of concave holes, and the concave holes are concave to the organic light-emitting panel.
Description
Technical field
The present invention relates to a kind of organic light emitting apparatus, and particularly relate to one and have the organic light emitting apparatus of high light-emitting efficiency (high light extraction efficiency).
Background technology
Information communication industry has become the emphasis that the various communicative indication products of main flow industry, particularly portable now develop especially.And because flat-panel screens is the communication interface between people and information, therefore its development particular importance that seems.Organic light emitting apparatus because it has advantages of that self-luminous, wide viewing angle, power saving, program are simple and easy, low cost, extensive, the high answer speed of operating temperature and true color etc., make it have great potentiality, be therefore expected to become the main flow of flat-panel screens of future generation.
In general, organic light emitting apparatus is made up of the organic luminous layer that is arranged on the first electrode layer, the second electrode lay on substrate and be sandwiched between two electrode layers.Conventionally substrate and the first electrode layer are to adopt light-transmitting materials, so that the light that organic luminous layer produces can penetrate out.But because the refractive index of substrate is about 1.4～1.6, and the refractive index of air is 1, therefore many high angle scattered light of sending from organic luminous layer just cannot be smoothly from substrate directive air.Thereby current most organic light emitting apparatus only has 15～20% light extraction efficiency.
Summary of the invention
The object of the present invention is to provide a kind of organic light emitting apparatus, it can increase the light extraction efficiency of the light that its organic luminous layer produces.
For reaching above-mentioned purpose, the present invention proposes a kind of organic light emitting apparatus, and it comprises organic luminous panel and at least one bright dipping enhancement film.Organic luminous panel has at least one exiting surface.Described at least one bright dipping is promoted film and is arranged on the exiting surface of organic luminous panel, and wherein bright dipping enhancement film has shrinkage pool array, and shrinkage pool array comprises multiple shrinkage pools, and described shrinkage pool is recessed to organic luminous panel.
The present invention proposes a kind of organic light emitting apparatus, and it comprises substrate, the first electrode layer, organic luminous layer and the second electrode lay.The first electrode layer is positioned on substrate.Organic luminous layer is positioned on the first electrode layer.The second electrode lay is positioned on organic luminous layer.Particularly, substrate has shrinkage pool array, and shrinkage pool array comprises multiple shrinkage pools, and described shrinkage pool is recessed to organic luminous layer from substrate.
The present invention proposes a kind of organic light emitting apparatus, and it comprises substrate, the first electrode layer, organic luminous layer, the second electrode lay and cover plate.Organic luminous layer and the second electrode lay.The first electrode layer is positioned on substrate.Organic luminous layer is positioned on the first electrode layer.The second electrode lay is positioned on organic luminous layer.Cover plate is positioned on the second electrode lay.Particularly, cover plate has shrinkage pool array, and shrinkage pool array comprises multiple shrinkage pools, and described shrinkage pool is recessed to organic luminous layer from cover plate.
Based on above-mentioned, the present invention arranges on organic luminous panel to be had the bright dipping enhancement film of shrinkage pool array or shrinkage pool array is set on substrate or shrinkage pool array is on the cover board set.Can increase the light extraction efficiency of the light that organic luminous layer produces by shrinkage pool array.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended accompanying drawing to be described in detail below.
Accompanying drawing explanation
Figure 1A is the generalized section of organic light emitting apparatus according to an embodiment of the invention;
Figure 1B is the generalized section of organic light emitting apparatus according to an embodiment of the invention;
Fig. 1 C is the generalized section of organic light emitting apparatus according to an embodiment of the invention;
Fig. 2 A is the schematic perspective view that film is promoted in the bright dipping of Figure 1A;
Fig. 2 B be Figure 1A bright dipping promote film shrinkage pool array on look schematic diagram;
Fig. 3 A to Fig. 3 C is according to looking schematic diagram on the shrinkage pool array of other embodiment;
Fig. 4 is the generalized section of organic light emitting apparatus according to an embodiment of the invention;
Fig. 5 is the generalized section of organic light emitting apparatus according to an embodiment of the invention;
Fig. 6 is the generalized section of organic light emitting apparatus according to an embodiment of the invention.
Main element symbol description
100: organic luminous panel
100a, 100b: basal surface, top surface
101: substrate
101a, 101b: upper surface, lower surface
102: the first electrode layers
104: organic luminous layer
106: the second electrode lay
120: cover plate
120a, 120b: inner surface, outer surface
130: fluid sealant
200: film is promoted in bright dipping
200a, 200b: first surface, second surface
202,202a, 202b: shrinkage pool
θ: angle
Embodiment
Figure 1A is the generalized section of organic light emitting apparatus according to an embodiment of the invention.Please refer to Figure 1A, the organic light emitting apparatus of the present embodiment comprises organic luminous panel 100 and at least one bright dipping enhancement film 200.
Organic luminous panel 100 comprises substrate 101, the first electrode layer 102, organic luminous layer 104 and the second electrode lay 106.According to one embodiment of the invention, above-mentioned organic luminous panel 100 more comprises cover plate 120 and fluid sealant 130.
Specifically, substrate 101 is mainly the element for carrying organic light emitting apparatus, and substrate 101 can be glass, quartz, organic polymer or light tight/reflecting material (for example: electric conducting material, metal, wafer, pottery or other material applicatory) or other material applicatory.
The first electrode layer 102 is arranged on substrate 101.The first electrode layer 102 can be the electrode layer of patterning or has the electrode layer of active member.The material of the first electrode layer can be transparent conductive material or opaque electric conducting material.Described transparent conductive material comprises metal oxide, for example, be indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide or other suitable oxide or the above-mentioned at least stack layer of the two.Described opaque electric conducting material comprises metal.
Organic luminous layer 104 is arranged on the first electrode layer 102.In the present embodiment, organic luminous layer 104 can comprise red organic light emission pattern, green organic light emission pattern, blue organic light emission pattern, the luminous pattern of other colors or the combination of above-mentioned luminous pattern.In addition,, according to other embodiment, organic luminous layer 104 can more comprise electron transfer layer, electron injecting layer, electric hole transport layer and electric hole implanted layer (not illustrating).
The second electrode lay 106 is arranged on organic luminous layer 104.The second electrode lay 106 can be the electrode layer of patterning or non-patterned electrode layer.In general,, if the first electrode layer 102 and the second electrode lay 106 are respectively the electrode layer of patterning, described organic luminous panel 100 is passive organic light-emitting panel 100.If the first electrode layer 102 for electrode layer and the second electrode lay 106 with active member be non-patterned electrode layer, described organic luminous panel 100 is active organic light-emitting panel 100.
In addition, cover plate 120 is arranged on substrate 101, and fluid sealant 130 is to be adhered between cover plate 120 and substrate 101, so that the first electrode layer 102, organic luminous layer 104 and the second electrode lay 106 are sealed between cover plate 120 and substrate 101.
It is worth mentioning that, in the present embodiment, above-mentioned organic luminous panel 100 is top emission type organic luminous panel, and therefore its second electrode lay 106 and cover plate 120 are light-transmitting materials, so that the light that organic luminous layer 106 produces can penetrate.In other words, organic luminous panel 100 has basal surface 100a and top surface 100b, and wherein the top surface 100b of organic luminous panel 100 is exiting surface.
On the exiting surface 100b of above-mentioned organic luminous panel 100, be provided with bright dipping and promote film 200.Particularly, bright dipping is promoted film 200 and is had the shrinkage pool array that comprises multiple shrinkage pools 202, and described shrinkage pool 202 is recessed to organic luminous panel 100.In more detail, bright dipping promote film 200 have relatively to first surface 200a and second surface 200b, shrinkage pool array (shrinkage pool 202) is to be positioned at first surface 200a, and second surface 200b is planar structure.In general, promote film 200 because of bright dipping and can directly be attached at the surface (exiting surface 100b) of organic luminous panel 100, therefore to promote the second surface 200b of film 200 be that planar structure contributes to bright dipping to promote the attaching between film 200 and organic luminous panel 100 in bright dipping.
According to embodiment, Fig. 2 A is the schematic perspective view that film is promoted in the bright dipping of Figure 1A.Fig. 2 B be Figure 1A bright dipping promote film shrinkage pool array on look schematic diagram.Please refer to Fig. 2 A and Fig. 2 B, the shrinkage pool array that film 200 is promoted in bright dipping is made up of the shrinkage pool 202 of multiple arrayed.In the present embodiment, shrinkage pool 202 is quadrangular pyramid shrinkage pool, and angle theta between two strands of each pyramid shrinkage pool 202 is 40～55 degree.Certainly, shrinkage pool 202 of the present invention is not limited to quadrangular pyramid shrinkage pool.According to other embodiment, shrinkage pool 202 can also be other polygonal cone shrinkage pools, pyrometric cone shrinkage pool as shown in Figure 3A, the cone shrinkage pool of hexagonal as shown in Figure 3 B or circular cone shrinkage pool as shown in Figure 3 C.
In addition, can be identical pyramid shrinkage pool at multiple pyramid shrinkage pools 202 of above-mentioned shrinkage pool array, or not quite identical pyramid shrinkage pool.For instance, in above-mentioned shrinkage pool array, the angle of pyramid shrinkage pool 202 can be incomplete same or identical.In addition, in above-mentioned shrinkage pool array, the size of shrinkage pool 202 is incomplete or identical.
Based on above-mentioned, promote film 200 because the present embodiment arranges bright dipping at the exiting surface 100a of organic luminous panel 100, the light that therefore organic luminous layer 104 in organic luminous panel 100 sends is just incident upon in air after can promoting film 200 by cover plate 120 and bright dipping.Promote film 200 and have the design of shrinkage pool array 202 due to bright dipping, the light that therefore can make organic luminous layer 104 send has more ratio to be incident upon in air, and then reaches the object of the light extraction efficiency that improves organic luminous panel.
In the embodiment of above-mentioned Figure 1A, the top surface 100b of organic luminous panel 100 is exiting surface, and namely organic luminous panel 100 is top emission type organic luminous panel.So, film is promoted in bright dipping of the present invention also can be applied to bottom-emission type organic luminous panel or dual-side luminescent type organic luminous panel, as described below.
Figure 1B is the generalized section of organic light emitting apparatus according to an embodiment of the invention.The embodiment of Figure 1B is similar to the embodiment of Figure 1A, therefore represent with identical symbol at this element identical with Figure 1A, and it is no longer repeated.Please refer to Figure 1B, in the present embodiment, organic luminous panel 100 is bottom-emission type organic luminous panel.In other words, the first electrode layer 102 and the substrate 101 of organic luminous panel 100 are light-transmitting materials, so that the light that organic luminous layer 106 produces can penetrate.In other words, the basal surface 100a of organic luminous panel 100 is exiting surface.Therefore, on the exiting surface 100a of organic luminous panel 100, be provided with bright dipping and promote film 200.Particularly, bright dipping is promoted film 200 and is had the shrinkage pool array that comprises multiple shrinkage pools 202, and described shrinkage pool 202 is recessed to organic luminous panel 100.
Fig. 1 C is the generalized section of organic light emitting apparatus according to an embodiment of the invention.The embodiment of Fig. 1 C is similar to the embodiment of Figure 1A, therefore represent with identical symbol at this element identical with Figure 1A, and it is no longer repeated.Please refer to Fig. 1 C, in the present embodiment, organic luminous panel 100 is dual-side luminescent type organic luminous panel.In other words, the first electrode layer 102, the second electrode lay 106, substrate 101 and the cover plate 120 of organic luminous panel 100 are all light-transmitting materials, so that the light that organic luminous layer 106 produces can two-sidedly penetrate.In other words, the top surface 100b of organic luminous panel 100 and basal surface 100a are all exiting surface.Therefore,, at the exiting surface 100a of organic luminous panel 100, on 100b, be respectively arranged with bright dipping and promote film 200a, 200b.Particularly, film 200a is promoted in bright dipping, and 200b has respectively shrinkage pool array (shrinkage pool 202), and described shrinkage pool 202 is recessed to organic luminous panel 100.
In the embodiment of above-mentioned Figure 1A to Fig. 1 C, be the bright dipping enhancement film in the exiting surface setting of organic luminous panel with shrinkage pool array, to improve the light extraction efficiency of organic light emitting apparatus.So, according to other embodiments of the invention, also shrinkage pool array can be arranged on to substrate, cover plate or both, to improve the light extraction efficiency of organic light emitting apparatus, as described below.
Fig. 4 is the generalized section of organic light emitting apparatus according to an embodiment of the invention.The embodiment of Fig. 4 is similar to the embodiment of Figure 1A, therefore represent with identical symbol at this element identical with Figure 1A, and it is no longer repeated.Please refer to Fig. 4, in the present embodiment, organic light emitting apparatus is bottom-emission type organic light emitting apparatus.In other words, the first electrode layer 102 and the substrate 101 of organic light emitting apparatus are light-transmitting materials, so that the light that organic luminous layer 106 produces can penetrate.In addition, substrate 101 has shrinkage pool array (shrinkage pool 202), and described shrinkage pool 202 is recessed to organic luminous layer 106 from substrate 101.In more detail, substrate 101 have relatively to upper surface 101a and lower surface 101b, the first electrode layer 106 is to be positioned on the upper surface 101a of substrate 101, and shrinkage pool array (shrinkage pool 202) is the lower surface 101b that is positioned at substrate 101, and the upper surface of substrate 101 is planar structure.Because the upper surface of substrate 101 is provided with the first electrode layer 106, therefore the upper surface of substrate 101 is that planar structure is just amassed or drape in the unlikely Shen that affects the first electrode layer 106.In the present embodiment, be formed on shape, angle and distribution etc. the condition of the shrinkage pool array (shrinkage pool 202) in substrate 101 all similar to the embodiment of above-mentioned Figure 1A.
Fig. 5 is the generalized section of organic light emitting apparatus according to an embodiment of the invention.The embodiment of Fig. 5 is similar to the embodiment of Figure 1A, therefore represent with identical symbol at this element identical with Figure 1A, and it is no longer repeated.Please refer to Fig. 5, in the present embodiment, organic light emitting apparatus is top emission type organic light emitting apparatus.In other words, the second electrode lay 106 of organic light emitting apparatus and cover plate 120 are light-transmitting materials, so that the light that organic luminous layer 106 produces can penetrate.In addition, cover plate 120 has shrinkage pool array (shrinkage pool 202), and described shrinkage pool 202 is recessed to organic luminous layer 104 from cover plate 120.In more detail, cover plate 120 have relatively to inner surface 120a and outer surface 120b, the inner surface 120a of cover plate 120 is towards the second electrode lay 106, and shrinkage pool array (shrinkage pool 202) is the outer surface 120b that is positioned at cover plate 120.In addition the preferably planar structure of inner surface 120a of cover plate 120.Similarly, in the present embodiment, be arranged on shape, angle and the distribution of the shrinkage pool array (shrinkage pool 202) in cover plate 120 etc. condition all similar to the embodiment of above-mentioned Figure 1A.
Fig. 6 is the generalized section of organic light emitting apparatus according to an embodiment of the invention.The embodiment of Fig. 6 is similar to the embodiment of Figure 1A, therefore represent with identical symbol at this element identical with Figure 1A, and it is no longer repeated.Please refer to Fig. 6, in the present embodiment, organic light emitting apparatus is dual-side luminescent type organic light emitting apparatus.In other words, the first electrode layer 102, the second electrode lay 106, substrate 101 and the cover plate 120 of organic luminous panel 100 are all light-transmitting materials, so that the light that organic luminous layer 106 produces can two-sidedly penetrate.
Particularly, substrate 101 has shrinkage pool array (shrinkage pool 202a), and described shrinkage pool 202a is recessed to organic luminous layer 104 from substrate 101.In more detail, substrate 101 have relatively to upper surface 101a and lower surface 101b, the first electrode layer 106 is to be positioned on the upper surface 101a of substrate 101, and shrinkage pool array (shrinkage pool 202a) is the lower surface 101b that is positioned at substrate 101, and the upper surface of substrate 101 is planar structure.Because the upper surface of substrate 101 is provided with the first electrode layer 106, therefore the upper surface of substrate 101 is that planar structure is just amassed or drape in the unlikely Shen that affects the first electrode layer 106.In the present embodiment, be formed on shape, angle and distribution etc. the condition of the shrinkage pool array (shrinkage pool 202a) in substrate 101 all similar to the embodiment of above-mentioned Figure 1A.
In addition, cover plate 120 has shrinkage pool array (shrinkage pool 202b), and described shrinkage pool 202b is recessed to organic luminous layer 104 from cover plate 120.In more detail, cover plate 120 have relatively to inner surface 120a and outer surface 120b, the inner surface 120a of cover plate 120 is towards the second electrode lay 106, and shrinkage pool array (shrinkage pool 202b) is the outer surface 120b that is positioned at cover plate 120.In addition the preferably planar structure of inner surface 120a of cover plate 120.Similarly, in the present embodiment, be arranged on shape, angle and the distribution of the shrinkage pool array (shrinkage pool 202b) in cover plate 120 etc. condition all similar to the embodiment of above-mentioned Figure 1A.
In sum, the present invention arranges the bright dipping with shrinkage pool array and promotes film or at substrate, cover plate or both, shrinkage pool array is set on organic luminous panel.The light sending due to the organic luminous layer in organic luminous panel is just incident upon in air after can promoting the shrinkage pool array of film, substrate or cover plate by bright dipping, therefore the light that organic luminous layer sends has more ratio can be incident upon air, and then reaches the object of the light extraction efficiency that improves organic light emitting apparatus.
Although disclosed the present invention in conjunction with above embodiment; but it is not in order to limit the present invention; under any, in technical field, be familiar with this operator; without departing from the spirit and scope of the present invention; can do a little change and retouching, thus protection scope of the present invention should with enclose claim was defined is as the criterion.
Claims (14)
1. an organic light emitting apparatus, comprising:
Substrate;
The first electrode layer, is positioned on this substrate;
Organic luminous layer, is positioned on this first electrode layer; And
The second electrode lay, is positioned on this organic luminous layer,
Wherein this substrate has the first shrinkage pool array being formed on wherein, and this first shrinkage pool array comprises multiple the first shrinkage pools, and those first shrinkage pools are recessed to this organic luminous layer from this substrate.
2. organic light emitting apparatus as claimed in claim 1, wherein those first shrinkage pools are polygonal cone shrinkage pool or circular cone shrinkage pool.
3. organic light emitting apparatus as claimed in claim 2, wherein the angle between two of each pyramid shrinkage pool strands is 40～55 degree.
4. organic light emitting apparatus as claimed in claim 3, wherein those angles of those pyramid shrinkage pools are incomplete same or identical.
5. organic light emitting apparatus as claimed in claim 1, wherein the size of those the first shrinkage pools is incomplete same or identical.
6. organic light emitting apparatus as claimed in claim 1, wherein this substrate have relatively to a upper surface and a lower surface, this first electrode layer is to be positioned on this upper surface, this first shrinkage pool array is to be positioned at this lower surface, and this upper surface is a plane.
7. organic light emitting apparatus as claimed in claim 1, also comprise a cover plate, it is positioned on this second electrode lay, and this cover plate has the second shrinkage pool array being formed on wherein, this the second shrinkage pool array comprises multiple the second shrinkage pools, and those second shrinkage pools are recessed to this organic luminous layer from this cover plate.
8. organic light emitting apparatus as claimed in claim 7, wherein this cover plate have relatively to an inner surface and an outer surface, this inner surface is towards this second electrode lay, this second shrinkage pool array is to be positioned at this outer surface, and this inner surface is a plane.
9. an organic light emitting apparatus, comprising:
Substrate;
The first electrode layer, is positioned on this substrate;
Organic luminous layer, is positioned on this first electrode layer;
The second electrode lay, is positioned on this organic luminous layer; And
Cover plate, is positioned on this second electrode lay, and wherein this cover plate has the shrinkage pool array being formed on wherein, and this shrinkage pool array comprises multiple shrinkage pools, and those shrinkage pools are recessed to this organic luminous layer from this cover plate,
Wherein this second electrode lay and this cover plate are light-transmitting materials, and the light that this organic luminous layer produces is penetrated.
10. organic light emitting apparatus as claimed in claim 9, wherein those shrinkage pools are polygonal cone shrinkage pool or circular cone shrinkage pool.
11. organic light emitting apparatus as claimed in claim 10, wherein the angle between two of each pyramid shrinkage pool strands is 40～55 degree.
12. organic light emitting apparatus as claimed in claim 11, wherein those angles of those pyramid shrinkage pools are incomplete same or identical.
13. organic light emitting apparatus as claimed in claim 9, wherein the size of those shrinkage pools is incomplete same or identical.
14. organic light emitting apparatus as claimed in claim 9, wherein this cover plate have relatively to an inner surface and an outer surface, this inner surface is towards this second electrode lay, this shrinkage pool array is to be positioned at this outer surface, and this inner surface is a plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010535201.3A CN102110779B (en) | 2010-11-03 | 2010-11-03 | Organic light-emitting device |
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| CN201010535201.3A CN102110779B (en) | 2010-11-03 | 2010-11-03 | Organic light-emitting device |
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| CN102110779A CN102110779A (en) | 2011-06-29 |
| CN102110779B true CN102110779B (en) | 2014-05-14 |
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| TWI463717B (en) * | 2011-07-29 | 2014-12-01 | Au Optronics Corp | Oled lighting element and manufacture method and lighting device utilizing thereof |
| CN104091898B (en) * | 2014-07-30 | 2018-06-01 | 上海天马有机发光显示技术有限公司 | Organic electroluminescence display panel and its manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1533221A (en) * | 2003-03-26 | 2004-09-29 | ��ʽ��������Զ�֯�������� | Transparent lining of surface luminous device and its producing method and surface luminous device |
| CN1545824A (en) * | 2002-05-14 | 2004-11-10 | ����ŷ�������ʽ���� | Luminescent panel |
| EP2224788A1 (en) * | 2007-12-21 | 2010-09-01 | Zeon Corporation | Surface light source device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545824A (en) * | 2002-05-14 | 2004-11-10 | ����ŷ�������ʽ���� | Luminescent panel |
| CN1533221A (en) * | 2003-03-26 | 2004-09-29 | ��ʽ��������Զ�֯�������� | Transparent lining of surface luminous device and its producing method and surface luminous device |
| EP2224788A1 (en) * | 2007-12-21 | 2010-09-01 | Zeon Corporation | Surface light source device |
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