CN101867020A - Luminous element - Google Patents
Luminous element Download PDFInfo
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- CN101867020A CN101867020A CN201010193365A CN201010193365A CN101867020A CN 101867020 A CN101867020 A CN 101867020A CN 201010193365 A CN201010193365 A CN 201010193365A CN 201010193365 A CN201010193365 A CN 201010193365A CN 101867020 A CN101867020 A CN 101867020A
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Abstract
The invention discloses a luminous element which comprises a substrate and an organic electrically-stimulated luminous element. The substrate is internally provided with a plurality of melted and solidified microstructures, and the organic electrically-stimulated luminous element is arranged on the substrate.
Description
Technical field
The present invention relates to a kind of light-emitting component, and particularly relevant for a kind of light-emitting component that can improve amount of light.
Background technology
Electroluminescence element (electroluminescent device) is a kind of semiconductor element that converts electric energy to luminous energy and have high conversion efficiency, the light-emitting component that its common purposes is indicator light, display floater and optical read/write head etc.Because electroluminescence element possesses as no visual angle problem, simple and easy, low-cost, the high answer speed of technology, serviceability temperature is in extensive range and characteristic such as full-colorization, therefore meet the requirement of multimedia era display characteristics, be expected to become the main flow of follow-on flat-panel screens.
Generally speaking, electroluminescence element comprises anode, luminescent layer and negative electrode.The principle of luminosity of electroluminescence element is that hole, electronics are injected into the electroluminescence layer by anode, negative electrode respectively.When meet in the electroluminescence layer in electronics and hole, can carry out again in conjunction with and form photon (photon), and then produce luminous phenomenon.
Since the electroluminescence layer be all material as the transparency conducting layer of electrode with high index of refraction, therefore the part light that is sent when electronics combines with the hole again can form the incident light of wide-angle because of refraction, thereby the interface between the interface between transparency conducting layer and the substrate or substrate and air produces total reflection, makes light to pass and causes the phenomenon of amount of light deficiency.
Summary of the invention
The invention provides a kind of light-emitting component, it has higher amount of light.
The present invention provides a kind of light-emitting component in addition, and it can reduce the total reflection of light in element.
The present invention provides a kind of light-emitting component again, and it can reduce by the light of substrate total reflection.
The present invention proposes a kind of light-emitting component, and it comprises substrate and organic electroluminescent element.The inside of substrate has a plurality of micro-structurals of solidifying again through fusion (micro-structures).Organic electroluminescent element is disposed on the substrate.
According to the described light-emitting component of the embodiment of the invention, for example the refractive index with substrate is different for the refractive index of above-mentioned micro-structural of solidifying again through fusion.
According to the described light-emitting component of the embodiment of the invention, the above-mentioned micro-structural of solidifying again through fusion for example is the inside that is distributed in substrate equably.
According to the described light-emitting component of the embodiment of the invention, the above-mentioned micro-structural of solidifying again through fusion for example is the inside that is distributed in substrate randomly.
According to the described light-emitting component of the embodiment of the invention, above-mentioned size through the micro-structural that fusion is solidified again is for example between 0.1 micron to 60 microns.
According to the described light-emitting component of the embodiment of the invention, the above-mentioned micro-structural of solidifying again through fusion is formed with the body laser inner carving method.
According to the described light-emitting component of the embodiment of the invention, the above-mentioned micro-structural of solidifying again through fusion does not for example contact with organic electroluminescent element.
According to the described light-emitting component of the embodiment of the invention, above-mentioned organic electroluminescent element comprises anode layer, organic function layer and cathode layer.Anode layer is disposed on the substrate.Organic function layer is disposed on the anode layer.Cathode layer is disposed on the organic function layer.
According to the described light-emitting component of the embodiment of the invention, above-mentioned organic function layer comprises hole injection layer (hole injecting layer, HIL), hole transmission layer (hole transporting layer, HTL), organic luminous layer (light emitting layer, EML) and electron injecting layer (electron injection layer, EIL).Hole injection layer is disposed on the anode layer.Hole transmission layer is disposed on the hole injection layer.Organic luminous layer is disposed on the hole transmission layer.Electron injecting layer is disposed between organic luminous layer and the cathode layer.
According to the described light-emitting component of the embodiment of the invention, above-mentioned organic electroluminescent element for example is a plurality of organic electro-luminescence display units that are arrayed.
The present invention proposes a kind of light-emitting component in addition, and it comprises substrate and organic electroluminescent element.The inside of substrate has a plurality of microbubbles (micro-bubbles).Organic electroluminescent element is disposed on the substrate.
According to the described light-emitting component of the embodiment of the invention, the refractive index of the above-mentioned microbubble for example refractive index with substrate is different.
According to the described light-emitting component of the embodiment of the invention, above-mentioned microbubble for example is the inside that is distributed in substrate equably.
According to the described light-emitting component of the embodiment of the invention, above-mentioned microbubble for example is the inside that is distributed in substrate randomly.
According to the described light-emitting component of the embodiment of the invention, the size of above-mentioned microbubble is for example between 0.1 micron to 60 microns.
According to the described light-emitting component of the embodiment of the invention, above-mentioned microbubble does not for example contact with organic electroluminescent element.
According to the described light-emitting component of the embodiment of the invention, can also comprise a plurality of expanded particles that are doped in the substrate, wherein microbubble is produced by expanded particle.
According to the described light-emitting component of the embodiment of the invention, the material of above-mentioned expanded particle for example is calcium carbonate, brium carbonate, sodium acid carbonate, sodium carbonate.
The present invention reintroduces a kind of light-emitting component, and it comprises substrate, a plurality of scattering particles and organic electroluminescent element.Scattering particles is distributed in the substrate.Organic electroluminescent element is disposed on the substrate.
According to the described light-emitting component of the embodiment of the invention, the refractive index of the above-mentioned scattering particles for example refractive index with substrate is different.
According to the described light-emitting component of the embodiment of the invention, above-mentioned scattering particles for example is the inside that is distributed in substrate equably.
According to the described light-emitting component of the embodiment of the invention, above-mentioned scattering particles for example is the inside that is distributed in substrate randomly.
According to the described light-emitting component of the embodiment of the invention, the size of above-mentioned scattering particles is for example between 0.1 micron to 60 microns.
According to the described light-emitting component of the embodiment of the invention, above-mentioned scattering particles does not for example contact with organic electroluminescent element.
Based on above-mentioned, because the substrate inside in the light-emitting component of the present invention has micro-structural, microbubble or scattering particles, therefore the light that organic electroluminescent element sent can produce scattering when entering substrate, feasible light through scattering can pass substrate with various angle, and reduce the chance that produces total reflection, thereby reached the purpose that increases amount of light.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended accompanying drawing to be described in detail below.
Description of drawings
Fig. 1 is the generalized section according to the light-emitting component that one embodiment of the invention illustrated;
Fig. 2 is the generalized section according to the light-emitting component that another embodiment of the present invention illustrated;
Fig. 3 is the generalized section according to the light-emitting component that yet another embodiment of the invention illustrated.
Wherein, Reference numeral
10,20,30: light-emitting component 100,200,300: substrate
102: organic electroluminescent element 102a: anode layer
102b: organic function layer 102c: cathode layer
104: micro-structural 202: microbubble
302: scattering particles
Embodiment
Fig. 1 is the generalized section according to the light-emitting component that one embodiment of the invention illustrated.Please refer to Fig. 1, light-emitting component 10 comprises substrate 100 and organic electroluminescent element 102.Substrate 100 for example is a glass substrate.The inside of substrate 100 has a plurality of micro-structurals 104 of solidifying again through fusion.The size of micro-structural 104 is for example between 0.1 micron to 60 microns.In the present embodiment, micro-structural 104 is distributed in the inside of substrate 100 equably.In another embodiment, micro-structural 104 also can be the inside that is distributed in substrate 100 randomly.Micro-structural 104 is formed with the body laser inner carving method, also is about to the inside that one or multi-channel laser light focuses on substrate 100, utilizes the mode of LASER HEATING to change the structure of substrate 100.Therefore body laser inner carving method also may command micro-structural 104, can make micro-structural 104 be completed in substrate 100 inside in the substrate 100 inner degree of depth that form, and makes substrate 100 have smooth surface.The refractive index of formed micro-structural 104 can be different from the refractive index of substrate 100.
Organic electroluminescent element 102 is disposed on the substrate 100.Organic electroluminescent element 102 for example is a plurality of organic electro-luminescence display units that are arrayed.Organic electroluminescent element 102 does not for example contact with micro-structural 104, or part micro-structural 104 contacts with organic electroluminescent element 102.102 of substrate 100 and organic electroluminescent elements more can comprise a resilient coating (not illustrating), with contacting of the micro-structural 104 on isolated organic electroluminescent element 102 and substrate 100 surfaces.Organic electroluminescent element 102 comprises anode layer 102a, organic function layer 102b and cathode layer 102c.Anode layer 102a is disposed on the substrate 100.Organic function layer 102b is disposed on the anode layer 102a.Cathode layer 102c is disposed on the organic function layer 102b.The material of anode layer 102a for example is transparent conductive oxide (transparent conductiveoxide, TCO), it can be indium tin oxide (indium tin oxide, ITO), aluminum zinc oxide (Al dopedZnO, AZO), indium-zinc oxide (indium zinc oxide, IZO) or other transparent conductive materials, but not as limit.Organic function layer 102b can be made of hole injection layer, hole transmission layer, organic luminous layer and electron injecting layer.In order to make drawings clear, do not show hole injection layer, hole transmission layer, organic luminous layer and electron injecting layer among Fig. 1.Hole injection layer is disposed on the anode layer 102a.Hole transmission layer is disposed on the hole injection layer.Organic luminous layer is disposed on the hole transmission layer.Electron injecting layer is disposed between organic luminous layer and the cathode layer 102c.In addition, organic function layer 102b can also comprise electron transfer layer (electron transport layer, ETL) and hole blocking layer (hole blocking layer, HBL).Electron transfer layer is disposed between organic luminous layer and the electron injecting layer.Hole blocking layer is disposed between electron injecting layer and the cathode layer 102c.The material of above-mentioned hole injection layer, hole transmission layer, organic luminous layer, electron transfer layer, electron injecting layer and hole blocking layer is well known to those skilled in the art, in this NES.The material of cathode layer 102c for example is a metal, but not as limit.
When the light of organic electroluminescent element 102 generations enters substrate 100,, make light can produce scattering after running into micro-structural 104 because the refractive index of micro-structural 104 is different from the refractive index of substrate 100.Therefore, reduced light and in substrate 100, produced the chance of total reflection, made light to pass substrate 100, thereby improved the amount of light of light-emitting component 10 with various angle.
Special one what carry is that the light-emitting component 10 in the present embodiment can be used in during various illumination application and color show, is preferably to be applied in lighting apparatus and the display.
Fig. 2 is the generalized section according to the light-emitting component that another embodiment of the present invention illustrated.Please refer to Fig. 2, light-emitting component 20 comprises substrate 200 and organic electroluminescent element 102.Organic electroluminescent element 102 is disposed on the substrate 200.Related description about organic electroluminescent element 102 please refer to Fig. 1, does not describe separately in this.Substrate 200 for example is the perspex substrate.The inside of substrate 200 has a plurality of microbubbles 202.The size of microbubble 202 is for example between 0.1 micron to 60 microns.In the present embodiment, microbubble 202 is distributed in the inside of substrate 200 equably.In another embodiment, microbubble 202 also can be the inside that is distributed in substrate 200 randomly.The refractive index of microbubble 202 is different with the refractive index of substrate 200.In addition, microbubble 202 does not contact with organic electroluminescent element 102, or part microbubble 202 contacts with organic electroluminescent element 102.102 of substrate 200 and organic electroluminescent elements more can comprise a resilient coating (not illustrating), with contacting of the microbubble 202 on isolated organic electroluminescent element 102 and substrate 200 surfaces.
Microbubble 202 is produced by expanded particle.In detail, when forming substrate 200, can discharge the expanded particle (for example calcium carbonate, brium carbonate, sodium acid carbonate, sodium carbonate) of gas after the heating of in plastic material, mixing earlier.Then, make even dispersion of expanded particle or random dispersion in plastic material.Afterwards, with plastic material heating and melting and moulding, can form and have an even surface but inner substrate 200, or the surface of substrate 202 has part microbubble 202 with microbubble 202.Therefore, in another embodiment, substrate 200 inside also may have expanded particle.
When the light of organic electroluminescent element 102 generations enters substrate 200,, make light can produce scattering after running into microbubble 202 because the refractive index of microbubble 202 is different from the refractive index of substrate 200.Therefore, reduced light and in substrate 200, produced the chance of total reflection, made light to pass substrate 200, thereby improved the amount of light of light-emitting component 20 with various angle.
Special one what carry is that the light-emitting component 20 in the present embodiment can be used in during various illumination application and color show, is preferably to be applied in the lighting apparatus.
Fig. 3 is the generalized section according to the light-emitting component that yet another embodiment of the invention illustrated.Please shine Fig. 3, light-emitting component 30 comprises substrate 300, scattering particles 302 and organic electroluminescent element 102.Organic electroluminescent element 102 is disposed on the substrate 300.Related description about organic electroluminescent element 102 please refer to Fig. 1, does not describe separately in this.Substrate 300 for example is milky (opal) glass substrate or alabaster (alabaster) glass substrate.Scattering particles 302 is distributed in the substrate 300.The size of scattering particles 302 is for example between 0.1 micron to 60 microns.In the present embodiment, scattering particles 302 is distributed in the inside of substrate 300 equably.In another embodiment, scattering particles 302 also can be the inside that is distributed in substrate 300 randomly.The refractive index of scattering particles 302 is different with the refractive index of substrate 300.In addition, scattering particles 302 does not contact with organic electroluminescent element 102, or part scattering particles 302 contacts with organic electroluminescent element 102.102 of substrate 300 and organic electroluminescent elements more can comprise a resilient coating (not illustrating), with contacting of isolated organic electroluminescent element 102 and substrate 300 surface scattering particles 302.。
In detail, when substrate 300 was the opal glass substrate, inclusion (inclusion) (being scattering particles 302) can be fluoride (NaF or CaF
2), ZnS, Ca
3(PO
4)
2, SnO
2, As
2O
5, ZrO2, TiO2 or the like; When substrate 300 was the alabaster glass substrate, the particle of inclusion was bigger, and it can be NaCl, Na
2SO
4Or the like.
When the light of organic electroluminescent element 102 generations enters substrate 300,, make light can produce scattering after running into scattering particles 302 because the refractive index of scattering particles 302 is different from the refractive index of substrate 300.Therefore, reduced light and in substrate 300, produced the chance of total reflection, made light to pass substrate 300, thereby improved the amount of light of light-emitting component 30 with various angle.
Special one what carry is that the light-emitting component 30 in the present embodiment can be used in during various illumination application and color show, is preferably to be applied in the lighting apparatus.
In sum, the present invention is at inner micro-structural, microbubble or the scattering particles of forming of the substrate of light-emitting component, the light that organic electroluminescent element is sent produces scattering in substrate inside, to reduce light in the inner chance that produces total reflection of substrate, make light to pass substrate, and improve the amount of light of light-emitting component whereby with various angle.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (30)
1. a light-emitting component is characterized in that, comprising:
One substrate, the inside of this substrate have a plurality of micro-structurals of solidifying again through fusion; And
One organic electroluminescent element is disposed on this substrate.
2. light-emitting component according to claim 1 is characterized in that, these refractive indexes through the micro-structural that fusion is solidified again are different with the refractive index of this substrate.
3. light-emitting component according to claim 1 is characterized in that, these micro-structurals of solidifying again through fusion are distributed in the inside of this substrate equably.
4. light-emitting component according to claim 1 is characterized in that, these micro-structurals of solidifying again through fusion are distributed in the inside of this substrate randomly.
5. light-emitting component according to claim 1 is characterized in that, these through the size of the micro-structural that fusion is solidified again between 0.1 micron to 60 microns.
6. light-emitting component according to claim 1 is characterized in that, these micro-structurals of solidifying again through fusion are formed with the body laser inner carving method.
7. light-emitting component according to claim 1 is characterized in that, these micro-structurals of solidifying again through fusion do not contact with this organic electroluminescent element.
8. light-emitting component according to claim 1 is characterized in that, this organic electroluminescent element comprises:
One anode layer is disposed on this substrate;
One organic function layer is disposed on this anode layer; And
One cathode layer is disposed on this organic function layer.
9. light-emitting component according to claim 8 is characterized in that, this organic function layer comprises:
One hole injection layer is disposed on this anode layer;
One hole transmission layer is disposed on this hole injection layer;
One organic luminous layer is disposed on this hole transmission layer; And
One electron injecting layer is disposed between this organic luminous layer and this cathode layer.
10. light-emitting component according to claim 1 is characterized in that, this organic electroluminescent element comprises a plurality of organic electro-luminescence display units that are arrayed.
11. a light-emitting component is characterized in that, comprising:
One substrate, the inside of this substrate has a plurality of microbubbles; And
One organic electroluminescent element is disposed on this substrate.
12. light-emitting component according to claim 11 is characterized in that, the refractive index of these microbubbles is different with the refractive index of this substrate.
13. light-emitting component according to claim 11 is characterized in that, these microbubbles are distributed in the inside of this substrate equably.
14. light-emitting component according to claim 11 is characterized in that, these microbubbles are distributed in the inside of this substrate randomly.
15. light-emitting component according to claim 11 is characterized in that, the size of these microbubbles is between 0.1 micron to 60 microns.
16. light-emitting component according to claim 11 is characterized in that, these microbubbles do not contact with this organic electroluminescent element.
17. light-emitting component according to claim 11 is characterized in that, this organic electroluminescent element comprises:
One anode layer is disposed on this substrate;
One organic function layer is disposed on this anode layer; And
One cathode layer is disposed on this organic function layer.
18. light-emitting component according to claim 17 is characterized in that, this organic function layer comprises:
One hole injection layer is disposed on this anode layer;
One hole transmission layer is disposed on this hole injection layer;
One organic luminous layer is disposed on this hole transmission layer; And
One electron injecting layer is disposed between this organic luminous layer and this cathode layer.
19. light-emitting component according to claim 11 is characterized in that, this organic electroluminescent element comprises a plurality of organic electro-luminescence display units that are arrayed.
20. light-emitting component according to claim 11 is characterized in that, more comprises a plurality of expanded particles, is doped in this substrate, wherein these microbubbles are produced by these expanded particles.
21. light-emitting component according to claim 11 is characterized in that, the material of these expanded particles comprises calcium carbonate, brium carbonate, sodium acid carbonate, sodium carbonate.
22. a light-emitting component is characterized in that, comprising:
One substrate;
A plurality of scattering particless are distributed in this substrate; And
One organic electroluminescent element is disposed on this substrate.
23. light-emitting component according to claim 22 is characterized in that, the refractive index of these scattering particless is different with the refractive index of this substrate.
24. light-emitting component according to claim 22 is characterized in that, these scattering particless are distributed in the inside of this substrate equably.
25. light-emitting component according to claim 22 is characterized in that, these scattering particless are distributed in the inside of this substrate randomly.
26. light-emitting component according to claim 22 is characterized in that, the size of these scattering particless is between 0.1 micron to 60 microns.
27. light-emitting component according to claim 22 is characterized in that, these scattering particless do not contact with this organic electroluminescent element.
28. light-emitting component according to claim 22 is characterized in that, this organic electroluminescent element comprises:
One anode layer is disposed on this substrate;
One organic function layer is disposed on this anode layer; And
One cathode layer is disposed on this organic function layer.
29. light-emitting component according to claim 28 is characterized in that, this organic function layer comprises:
One hole injection layer is disposed on this anode layer;
One hole transmission layer is disposed on this hole injection layer;
One organic luminous layer is disposed on this hole transmission layer; And
One electron injecting layer is disposed between this organic luminous layer and this cathode layer.
30. light-emitting component according to claim 22 is characterized in that, this organic electroluminescent element comprises a plurality of organic electro-luminescence display units that are arrayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010193365A CN101867020A (en) | 2010-06-01 | 2010-06-01 | Luminous element |
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|---|---|---|---|
| CN201010193365A CN101867020A (en) | 2010-06-01 | 2010-06-01 | Luminous element |
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ID=42958650
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| CN102386339A (en) * | 2011-09-28 | 2012-03-21 | 友达光电股份有限公司 | Organic electroluminescent element |
| CN102915430A (en) * | 2011-08-05 | 2013-02-06 | 金佶科技股份有限公司 | Finger-pressure plate |
| CN103367643A (en) * | 2012-04-05 | 2013-10-23 | 东莞万士达液晶显示器有限公司 | Organic light-emitting device |
| CN103887395A (en) * | 2012-12-19 | 2014-06-25 | 晶元光电股份有限公司 | Light-emitting element |
| WO2015116743A1 (en) * | 2014-01-29 | 2015-08-06 | Corning Incorporated | Laser featured glass for display illumination |
| US9368758B2 (en) | 2012-03-30 | 2016-06-14 | Lg Display Co., Ltd. | Substrate for organic electronic device |
| WO2019228183A1 (en) * | 2018-05-31 | 2019-12-05 | 京东方科技集团股份有限公司 | Display substrate, display device and encapsulating method for display parts |
| CN111200079A (en) * | 2018-11-19 | 2020-05-26 | 乐金显示有限公司 | Organic light emitting diode display device and display device |
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| CN102386339B (en) * | 2011-09-28 | 2014-03-12 | 友达光电股份有限公司 | organic electroluminescent element |
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| WO2015116743A1 (en) * | 2014-01-29 | 2015-08-06 | Corning Incorporated | Laser featured glass for display illumination |
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| WO2019228183A1 (en) * | 2018-05-31 | 2019-12-05 | 京东方科技集团股份有限公司 | Display substrate, display device and encapsulating method for display parts |
| CN111200079A (en) * | 2018-11-19 | 2020-05-26 | 乐金显示有限公司 | Organic light emitting diode display device and display device |
| KR20200058039A (en) * | 2018-11-19 | 2020-05-27 | 엘지디스플레이 주식회사 | Organic light emitting diodes |
| CN111200079B (en) * | 2018-11-19 | 2022-11-15 | 乐金显示有限公司 | Organic light emitting diode display device and display device |
| KR102672451B1 (en) * | 2018-11-19 | 2024-06-04 | 엘지디스플레이 주식회사 | Organic light emitting diodes |
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Application publication date: 20101020 |