CN105702874A - Top light-emitting device - Google Patents
Top light-emitting device Download PDFInfo
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- CN105702874A CN105702874A CN201410689351.8A CN201410689351A CN105702874A CN 105702874 A CN105702874 A CN 105702874A CN 201410689351 A CN201410689351 A CN 201410689351A CN 105702874 A CN105702874 A CN 105702874A
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Abstract
The invention discloses a top light-emitting device. The top light-emitting device comprises a substrate, a transparent conductive layer, an organic light emitting layer and a cathode layer; a high-diffusion reflection layer is arranged between the substrate and the transparent conductive layer; and the reflectivity of the high-diffusion reflection layer for visible light is larger than 8%. According to the top light-emitting device of the invention, the high-diffusion reflection layer is arranged between the substrate and the transparent conductive layer, so that the micro cavity effect of a traditional top light-emitting device can be eliminated, and therefore, white light can be obtained through modulation and can be used for lighting and the top light-emitting device of the invention has the advantages of simple process and high luminous efficiency.
Description
Technical field
The present invention relates to OLED technology field, specifically, be a kind of top illuminating device。
Background technology
At OLED(OrganicLight-EmittingDiode, Organic Light Emitting Diode) in technical field, device architecture generally comprises end luminescent device and top illuminating device。End emitting OLED-device substrate used thereof must be transparent, which greatly limits the range of choice of substrate。The substrate of some excellent performances, as better in thermal diffusivity, mechanical strength is high, can as the tinsel substrate of flexible substrate, due to light tight, this kind of substrate is not used to the end luminescent device of illumination, can be only applied in top illuminating device。But traditional top-illuminating OLED device is due to microcavity effect, not easily modulates white light, so being rarely applied to lighting field。
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of top illuminating device, it is possible to making full use of the substrate of excellent performance, and can eliminate or slacken microcavity effect, thus modulating white light, being particularly well-suited to lighting field。
In order to solve above-mentioned technical problem, the invention provides a kind of top illuminating device, including substrate, transparency conducting layer, organic luminous layer and cathode layer, between described substrate and described transparency conducting layer, be additionally provided with high diffuse-reflectance layer, described high diffuse-reflectance layer to visible reflectance more than 80%。
Further, described high diffuse-reflectance layer to visible reflectance more than 95%。
Further, described high diffuse-reflectance layer is by coating substrate surface by high diffuse-reflectance rate material with spin coating, spraying or silk screen printing process, and described transparency conducting layer is formed on highly-reflective coating with sputtering method, nebulization, cladding process, infusion process, chemical vapour deposition technique, vacuum vapour deposition or sputtering method。
Further, described high diffuse-reflectance rate material is the mixture of at least one and rubstick class material in barium sulfate, titanium oxide, calcium carbonate, calcium sulfate, aluminium oxide, magnesium oxide, magnesium sulfate, magnesium silicate, zinc oxide, glass, aluminium nitride, boron nitride, silicon dioxide, zirconium oxide, Hollow Glass Sphere。
Further, described high diffuse-reflectance rate material is Fluorilon-99WTMMaterial。
Further; described high diffuse-reflectance rate material is the composite of high reflectance; the composite of described high reflectance includes base material, affine layer, the coat of metal and protective layer, and described base material, affine layer, the coat of metal, protective layer cover described substrate from bottom to up successively。
Further, described protective layer includes the first protective layer and the second protective layer, and the second protective layer covers the described coat of metal, and the first protective layer covers described second protective layer。
Further, the material of described base material is selected from aluminum, ferrum or copper；Described affine layer is porous oxide film；The described coat of metal is aluminium coated；Described second protective layer is fluoride coating；Described first protective layer is oxide coating。
Further, the material of described transparency conducting layer is metal-oxide film。
Further, described substrate is tinsel, or is polymer material substrate, or is polymer overlying sheet layer inorganic thin film, or is covering multilamellar organic/inorganic film-substrate on polymer。
The top illuminating device of the present invention, by arranging high diffuse-reflectance layer between substrate and transparency conducting layer, eliminates the microcavity effect of tradition top illuminating device with this, such that it is able to modulate white light, for illumination。Further, the top illuminating device technique of the present invention is simple, device light emitting efficiency is high。
Accompanying drawing explanation
Fig. 1 is the structural representation of the top illuminating device of the present invention。
In figure: 1. substrate, 2. high diffuse-reflectance rate layer, 3. transparency conducting layer, 4. organic luminous layer, 5. cathode layer。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, so that those skilled in the art can be more fully understood that the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention。
As it is shown in figure 1, the top illuminating device of the present invention, including substrate, transparency conducting layer, organic luminous layer and cathode layer, between substrate and transparency conducting layer, it is additionally provided with high diffuse-reflectance layer。Wherein, high diffuse-reflectance layer is positioned at substrate surface, and described transparency conducting layer is positioned on high diffuse-reflectance layer。Described high diffuse-reflectance layer, refers to the visible reflectance reflecting layer more than 80%, it is preferred to the visible reflectance reflecting layer more than 95%。
Preferably, high diffuse-reflectance layer is by coating substrate surface by high diffuse-reflectance rate material in spin coating mode, and transparency conducting layer sputtering is formed on highly-reflective coating。Certainly, high diffuse-reflectance layer is not limited to coat substrate surface with spin coating proceeding, it would however also be possible to employ the techniques such as spraying, silk-screen；Equally, transparency conducting layer is also not necessarily limited to be formed on high diffuse-reflectance coating with sputtering technology, it is also possible to adopt the techniques such as nebulization, cladding process, infusion process, chemical vapour deposition technique, vacuum vapour deposition, sputtering method。
Wherein, but at least one mixture with rubstick class material in high diffuse-reflectance rate material barium sulfate, titanium oxide, calcium carbonate, calcium sulfate, aluminium oxide, magnesium oxide, magnesium sulfate, magnesium silicate, zinc oxide, glass, aluminium nitride, boron nitride, silicon dioxide, zirconium oxide, Hollow Glass Sphere。
Wherein, rubstick class material such as resinae, organic photoresist, inorganic resist etc., mixed proportion is: the ratio of high diffuse-reflectance rate material and rubstick for more than 0 less than 3:1。Wherein high diffuse-reflective material mean diameter is 0.1-10um, and high diffuse-reflectance layer thickness is 0.5um-150um。
High diffuse-reflectance rate material can also is that Fluorilon-99WTMMaterial。Fluorilon-99WTMBe a kind of commercially available, there is the white of high diffuse-reflectance coefficient, high stable thermoplastic。This material has good heat stability (> 300 degrees Celsius) and chemical stability。
High diffuse-reflectance rate material can also is that the composite of high reflectance, and the composite of this high reflectance includes base material, affine layer, the coat of metal and protective layer, and protective layer includes again the first protective layer and the second protective layer。Base material, affine layer, the coat of metal, the second protective layer and the first protective layer cover substrate from bottom to up successively。Wherein, the material of base material is selected from aluminum, ferrum or copper；Affine layer is porous oxide film；The coat of metal is aluminium coated；Second protective layer is fluoride coating；First protective layer is oxide coating。The composite of this high reflectance to the reflectance of visible ray up to more than 98%。
In the top illuminating device of the present invention, the material of transparency conducting layer can be metal-oxide film (TCO), and it refers to and has the oxide of transparent conductivity, nitride, fluoride, doping oxide or mixed oxide, and wherein oxygen (nitrogen) compound is: In2O3、SnO2, ZnO, CdO, TiN。Doping oxide is: In2O3: Sn(ITO), ZnO:In(IZO), ZnO:Ga(GZO), ZnO:Al(AZO), ZnO2: F, TiO2: Ta。Mixed oxide is: In2O3-ZnO、CdIn2O4、Cd2Sn2O4、Zn2SnO4。
And substrate can select tinsel。Tinsel substrate has that thermal diffusivity is good, mechanical strength is high, can as advantages such as flexible substrate。Certainly, substrate is not limited to tinsel, other light weight, the material that shock-resistant, water oxygen barrier performance is good, mechanical strength is high can also serve as substrate, for instance polymer material substrate (polyethylene, polypropylene, polystyrene etc.), polymer overlying sheet layer inorganic thin film or multilamellar organic/inorganic film-substrate etc.。
The top illuminating device of the present invention can eliminate or slacken the microcavity effect of tradition top illuminating device, such that it is able to modulate white light, is particularly well-suited to illumination。Further, the top illuminating device technique of the present invention is simple, device light emitting efficiency is high。
Embodiment described above is only the preferred embodiment lifted for absolutely proving the present invention, and protection scope of the present invention is not limited to this。Equivalent replacement that those skilled in the art make on basis of the present invention or conversion, all within protection scope of the present invention。Protection scope of the present invention is as the criterion with claims。
Claims (10)
1. a top illuminating device, including substrate, transparency conducting layer, organic luminous layer and cathode layer, it is characterised in that be additionally provided with high diffuse-reflectance layer between described substrate and described transparency conducting layer, described high diffuse-reflectance layer to visible reflectance more than 80%。
2. top illuminating device according to claim 1, it is characterised in that described high diffuse-reflectance layer to visible reflectance more than 95%。
3. top illuminating device according to claim 1, it is characterized in that, described high diffuse-reflectance layer is by coating substrate surface by high diffuse-reflectance rate material with spin coating, spraying or silk screen printing process, and described transparency conducting layer is formed on highly-reflective coating with sputtering method, nebulization, cladding process, infusion process, chemical vapour deposition technique, vacuum vapour deposition or sputtering method。
4. top illuminating device according to claim 3, it is characterized in that, described high diffuse-reflectance rate material is the mixture of at least one and rubstick class material in barium sulfate, titanium oxide, calcium carbonate, calcium sulfate, aluminium oxide, magnesium oxide, magnesium sulfate, magnesium silicate, zinc oxide, glass, aluminium nitride, boron nitride, silicon dioxide, zirconium oxide, Hollow Glass Sphere。
5. top illuminating device according to claim 3, it is characterised in that described high diffuse-reflectance rate material is Fluorilon-99WTMMaterial。
6. top illuminating device according to claim 3; it is characterized in that; described high diffuse-reflectance rate material is the composite of high reflectance; the composite of described high reflectance includes base material, affine layer, the coat of metal and protective layer, and described base material, affine layer, the coat of metal, protective layer cover described substrate from bottom to up successively。
7. top illuminating device according to claim 6, it is characterised in that described protective layer includes the first protective layer and the second protective layer, the second protective layer covers the described coat of metal, and the first protective layer covers described second protective layer。
8. top illuminating device according to claim 7, it is characterised in that the material of described base material is selected from aluminum, ferrum or copper；Described affine layer is porous oxide film；The described coat of metal is aluminium coated；Described second protective layer is fluoride coating；Described first protective layer is oxide coating。
9. top illuminating device according to claim 1, it is characterised in that the material of described transparency conducting layer is metal-oxide film。
10. top illuminating device according to claim 1, it is characterised in that described substrate is tinsel, or be polymer material substrate, or be polymer overlying sheet layer inorganic thin film, or be covering multilamellar organic/inorganic film-substrate on polymer。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689351.8A CN105702874A (en) | 2014-11-26 | 2014-11-26 | Top light-emitting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689351.8A CN105702874A (en) | 2014-11-26 | 2014-11-26 | Top light-emitting device |
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| Publication Number | Publication Date |
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| CN105702874A true CN105702874A (en) | 2016-06-22 |
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| CN201410689351.8A Pending CN105702874A (en) | 2014-11-26 | 2014-11-26 | Top light-emitting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146677A (en) * | 2019-12-24 | 2020-05-12 | 丹阳市朗宁光电子科技有限公司 | White light source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008234931A (en) * | 2007-03-19 | 2008-10-02 | Toshiba Matsushita Display Technology Co Ltd | Light emitting device |
| CN102514295A (en) * | 2011-12-02 | 2012-06-27 | 上海安美特铝业有限公司 | Ultrahigh-reflectivity composite material and preparation method thereof |
| CN102956837A (en) * | 2011-08-26 | 2013-03-06 | 三菱综合材料株式会社 | Organic electroluminescence component and manufacturing method thereof |
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2014
- 2014-11-26 CN CN201410689351.8A patent/CN105702874A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008234931A (en) * | 2007-03-19 | 2008-10-02 | Toshiba Matsushita Display Technology Co Ltd | Light emitting device |
| CN102956837A (en) * | 2011-08-26 | 2013-03-06 | 三菱综合材料株式会社 | Organic electroluminescence component and manufacturing method thereof |
| CN102514295A (en) * | 2011-12-02 | 2012-06-27 | 上海安美特铝业有限公司 | Ultrahigh-reflectivity composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146677A (en) * | 2019-12-24 | 2020-05-12 | 丹阳市朗宁光电子科技有限公司 | White light source |
| CN111146677B (en) * | 2019-12-24 | 2021-12-17 | 丹阳市朗宁光电子科技有限公司 | White light source |
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Application publication date: 20160622 |