CN100542363C - Organic light emitting apparatus and electrode base board - Google Patents
Organic light emitting apparatus and electrode base board Download PDFInfo
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- CN100542363C CN100542363C CNB2005101053971A CN200510105397A CN100542363C CN 100542363 C CN100542363 C CN 100542363C CN B2005101053971 A CNB2005101053971 A CN B2005101053971A CN 200510105397 A CN200510105397 A CN 200510105397A CN 100542363 C CN100542363 C CN 100542363C
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- light emitting
- organic light
- emitting apparatus
- auxiliary electrode
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Abstract
A kind of organic light emitting apparatus, it comprises a substrate, an auxiliary electrode, an insulating barrier, one first electrode, at least one organic functional layer and one second electrode in regular turn; Wherein, second electrode of at least a portion is directly to engage with auxiliary electrode.
Description
Technical field
The invention relates to a kind of light-emitting device and electrode base board, especially in regard to a kind of end face luminous organic light emitting apparatus and electrode base board.
Background technology
Organic light emitting apparatus (Organic Electroluminescent Device) is the element that a kind of self-luminous characteristic of utilizing organic functional material (organic functional materials) reaches display effect, it can be divided into micromolecule organic light emitting apparatus (small molecule OLED according to the molecular weight difference of organic functional material, SM-OLED) with macromolecule organic light emitting apparatus (polymerlight-emitting device, PLED) two big classes.Organic light emitting apparatus with its self-luminous, no visual angle, power saving, advantage such as processing procedure is easy, cost is low, high answer speed and full-colorization, make organic light emitting apparatus have great application potential, be expected to become follow-on flat-panel screens.
See also shown in Figure 1ly, existing known organic light emitting apparatus 1 comprises a substrate 11, one first electrode 12, an organic functional layer 13, one second electrode 14 and an auxiliary electrode 15.When imposing a direct current electric current in organic light emitting apparatus 1, electricity hole and electronics are to inject organic functionalized layer 13 by first electrode 12 and second electrode 14 respectively, at this moment, because the potential difference that extra electric field caused, make carrier in organic functional layer 13, move, meet and produce combination again, can excite light emitting molecule in the organic functional layer 13 and combine the exciton (exciton) that is produced with electric hole by electronics, the light emitting molecule of excitation state gives off energy with the form of light then.In this, the luminescent chromaticity of organic functional layer 13 is different according to the energy jump between material ground state and the excitation state.In addition, the setting of auxiliary electrode 15 is in order to increase the electrical conductivity of second electrode 14.
When organic light-emitting device 1 is end face when luminous, the thickness of second electrode 14 must less than
To increase the efficient of printing opacity.Yet, when the thickness of second electrode 14 less than
The time, be easy to generate discontinuous electrode surface, and cause the resistance value rising of second electrode 14 and the decline of electron injection efficiency.For solving this problem, present technology is with electrical efficiency that improves second electrode 14 and the operating voltage level that reduces organic light emitting apparatus 1 with auxiliary electrode 15.Yet present solution has following two shortcomings: (1) is because organic light emitting apparatus 1 is luminous for end face, so be arranged at the aperture opening ratio that the auxiliary electrode 15 of end face can reduce picture element; (2) because auxiliary electrode 15 is to utilize light shield (mask) to be deposited on second electrode 14, for the organic light emitting apparatus 1 of making high-res, the size of auxiliary electrode 15 is bound to such an extent that dwindle relatively, yet present technology has its degree of difficulty if the hole of light shield will be shortened into corresponding size, cost is also high simultaneously, and, also can't effectively increase conductivity if the size of auxiliary electrode 15 is too thin.
For solving present technical bottleneck, the present invention urgently thinks a kind of organic light emitting apparatus and electrode base board that can solve this problem, and several times research experiment is eventually to finishing the present invention.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is for providing a kind of organic light emitting apparatus and electrode base board, and wherein auxiliary electrode is to be arranged at organic functional layer below and the aperture opening ratio that can not influence picture element.
For reaching above-mentioned purpose, according to a kind of organic light emitting apparatus of the present invention, comprise a substrate, an auxiliary electrode, an insulating barrier, one first electrode, at least one organic functional layer and one second electrode in regular turn, wherein, second electrode of at least a portion is directly to engage with auxiliary electrode.
For reaching above-mentioned purpose, according to a kind of electrode base board of the present invention, comprise a substrate, an auxiliary electrode, an insulating barrier and an electrode in regular turn, wherein the electrode of at least a portion is directly to engage with auxiliary electrode.
From the above, organic light emitting apparatus of the present invention and electrode base board, wherein auxiliary electrode is the below that is arranged at the organic functional layer.Comparing with known techniques, because auxiliary electrode of the present invention is the below that is arranged at the organic functional layer, is being end face when luminous when light emission direction, and the setting of auxiliary electrode can't have influence on the aperture opening ratio of picture element.In addition, auxiliary electrode the size that area also need not to cooperate picture element is set, be with when the size of picture element is dwindled, the light shield of the usefulness of deposition auxiliary electrode need not to change design, and auxiliary electrode also can have the bigger area that is provided with, and can significantly increase conductivity and current carrying capacity.
Description of drawings
Fig. 1 is a schematic diagram, shows known Organic Light Emitting Diode.
Fig. 2 is a schematic diagram, shows the organic light emitting apparatus according to first embodiment of the invention.
Fig. 3 is another schematic diagram, shows the organic light emitting apparatus according to first embodiment of the invention.
Fig. 4 is a schematic diagram, shows the electrode base board according to second embodiment of the invention.
Fig. 5 is another schematic diagram, shows the electrode base board according to second embodiment of the invention.
1: organic light emitting apparatus 11: substrate
Electrode 13 in 12: the first: the organic functional layer
Electrode 15 in 14: the second: auxiliary electrode
2: organic light emitting apparatus 21: substrate
22: auxiliary electrode 23: insulating barrier
Electrode 25 in 24: the first: the organic functional layer
Electrode 27 in 26: the second: protective layer
3: electrode base board 31: substrate
32: auxiliary electrode 33: insulating barrier
34: electrode 35: protective layer
Embodiment
Hereinafter with reference to correlative type, organic light emitting apparatus and electrode base board according to preferred embodiment of the present invention are described.
For convenience of description, below be with but not to be defined as the luminous organic light emitting apparatus of end face be example.
First embodiment
See also shown in Figure 2, it is organic light emitting apparatus 2 according to first embodiment of the invention, comprise a substrate 21, an auxiliary electrode 22, an insulating barrier 23, one first electrode 24, an organic functional layer 25 and one second electrode 26 in regular turn, wherein, second electrode 26 of at least a portion is directly to engage with auxiliary electrode 22.
In present embodiment, substrate 21 can be flexible (flexible) substrate or rigidity (rigid) substrate.Simultaneously, substrate 21 can also be plastic cement (plastic) substrate or glass substrate.Wherein, flexible base, board and plastic substrate can be Merlon (polycarbonate, PC) substrate, polyester (polyester, PET) substrate, cyclenes copolymer (cyclic olefin copolymer, COC) substrate or crome metal compound base material-cyclenes copolymer (metallocene-based cyclic olefincopolymer, mCOC) substrate.In addition, substrate 21 can also be a silicon substrate.
In addition, as shown in Figure 2, auxiliary electrode 22 is to be formed on the substrate 21.Wherein, auxiliary electrode 22 materials can be the metal oxide of conductive materials or conduction, wherein Dao Dian metal oxide be selected from indium tin oxide (ITO), aluminium zinc oxide (AZO), indium-zinc oxide (IZO) and cadmium tin-oxide (CdSnO) at least one of them, wherein conductive materials be selected from aluminium, calcium, magnesium, indium, tin, manganese, chromium, copper, silver, gold and alloy thereof at least one of them, the alloy that contains magnesium comprises but is not defined as magnesium silver alloy, magnesium indium alloy, magnesium ashbury metal, magnesium antimony alloy and magnesium tellurium alloy.In this, auxiliary electrode 22 is in order to conductivity that increases by second electrode 26 and current carrying capacity.
Moreover, see also shown in Figure 2, the insulating barrier 23 of present embodiment is to be arranged on the auxiliary electrode 22, in order to prevent that auxiliary electrode 22 from contacting and short circuit with first electrode 24, insulating barrier 23 materials are to be non-conductive material, for example but be not defined as silica, silicon nitride, silicon oxynitride, class diamond film (diamond-like carbon), photoresist, zinc sulphide (ZnS), selenium sulfide (ZnSe) or pi (polyimide).
In addition, organic functional layer 25 comprises an electric hole implanted layer, an electric hole transfer layer, a luminescent layer, an electron transfer layer and an electron injecting layer (not shown) usually.Wherein, organic functional layer 25 is to utilize evaporation (evaporation), rotary coating (spin coating), ink jet printing (inkjet printing), transfer (transfer) or printing modes such as (printing) to be formed on first electrode 24.In addition, the light launched of organic functional layer 25 can be blue light, green glow, ruddiness, white light, other monochromatic light or the colourama that is combined into of monochromatic light.
In addition, as shown in Figure 3, the organic light emitting apparatus 2 of present embodiment more comprises a protective layer 27, and it is to be arranged between substrate 21 and the auxiliary electrode 22.In this; protective layer 27 is except the effect with anti-aqueous vapor invasion; the effect that also can have insulation, protective layer 27 materials are to be non-conductive material, for example but be not defined as silica, silicon nitride, silicon oxynitride, class diamond film, photoresist, zinc sulphide, selenium sulfide or pi.
In present embodiment, because auxiliary electrode 22 is the belows that are arranged at organic functional layer 25, when so the light that is sent when organic functionalized layer 25 is penetrated by second electrode, 26 directions, auxiliary electrode 22 the path that position and area size can't influence light is set, be area size and the shape that can come designing institute to be provided with according to actual demand with auxiliary electrode 22.
Second embodiment
In addition, as Fig. 4 and shown in Figure 5, comprise a substrate 31, an auxiliary electrode 32, an insulating barrier 33 and an electrode 34 in regular turn according to a kind of electrode base board 3 of second embodiment of the invention.
As shown in Figure 5, the electrode base board 3 of present embodiment more comprises protective layer 35, and it is to be arranged between substrate 31 and the auxiliary electrode 32.
The feature of the substrate 31 of present embodiment, auxiliary electrode 32, insulating barrier 33, electrode 34 and protective layer 35 and the function element that all is basically the same as those in the first embodiment is identical, does not repeat them here.
From the above, organic light emitting apparatus of the present invention and electrode base board, wherein auxiliary electrode is the below that is arranged at the organic functional layer.Comparing with known techniques, because auxiliary electrode of the present invention is the below that is arranged at the organic functional layer, is being end face when luminous when light emission direction, and the setting of auxiliary electrode can't have influence on the aperture opening ratio of picture element.In addition, auxiliary electrode the size that area also need not to cooperate picture element is set, be with when the size of picture element is dwindled, the light shield of the usefulness of deposition auxiliary electrode need not to change design, and auxiliary electrode also can have the bigger area that is provided with, and can significantly increase conductivity and current carrying capacity.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the claim of the present invention its equivalent modifications of carrying out or change.
Claims (5)
1, a kind of organic light emitting apparatus is characterized in that it comprises in regular turn:
One substrate;
One auxiliary electrode;
One insulating barrier;
One first electrode;
At least one organic functional layer; And
One second electrode; Wherein, second electrode of at least a portion is directly to engage with auxiliary electrode.
2, organic light emitting apparatus according to claim 1 is characterized in that it more comprises a protective layer, is arranged between substrate and the auxiliary electrode.
3, organic light emitting apparatus according to claim 1 is characterized in that the metal oxide of the material of first electrode wherein and/or second electrode for conduction.
4, organic light emitting apparatus according to claim 1 is characterized in that the wherein metal oxide of material for conducting electricity of auxiliary electrode.
5, organic light emitting apparatus according to claim 1, it is characterized in that wherein insulating barrier be selected from silica, silicon nitride, silicon oxynitride, class diamond film, zinc sulphide, selenium sulfide or pi at least one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101053971A CN100542363C (en) | 2005-09-27 | 2005-09-27 | Organic light emitting apparatus and electrode base board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101053971A CN100542363C (en) | 2005-09-27 | 2005-09-27 | Organic light emitting apparatus and electrode base board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1942032A CN1942032A (en) | 2007-04-04 |
| CN100542363C true CN100542363C (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101053971A Expired - Fee Related CN100542363C (en) | 2005-09-27 | 2005-09-27 | Organic light emitting apparatus and electrode base board |
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| CN (1) | CN100542363C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2145355B1 (en) * | 2007-04-27 | 2013-06-19 | Koninklijke Philips Electronics N.V. | Method of forming an organic light emitting device with anodized metallization |
| CN111009618A (en) * | 2019-12-18 | 2020-04-14 | 固安翌光科技有限公司 | Organic electroluminescent device |
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2005
- 2005-09-27 CN CNB2005101053971A patent/CN100542363C/en not_active Expired - Fee Related
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| CN1942032A (en) | 2007-04-04 |
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Granted publication date: 20090916 Termination date: 20120927 |