CN104716155A - Organic light-emitting display device - Google Patents
Organic light-emitting display device Download PDFInfo
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- CN104716155A CN104716155A CN201310677315.5A CN201310677315A CN104716155A CN 104716155 A CN104716155 A CN 104716155A CN 201310677315 A CN201310677315 A CN 201310677315A CN 104716155 A CN104716155 A CN 104716155A
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Abstract
The invention discloses an organic light-emitting display device comprising a first conductive electrode, an organic electroluminescent layer, and a second conductive electrode, which are sequentially arranged in a fitting way. The first conductive electrode comprises a first transparent electrode layer, a reflective conductive electrode layer, and a transparent conductive film, which are sequentially arranged in a fitting way. The transparent conductive film is doped with silver halide nano particles and a catalyst. The organic electroluminescent layer is arranged between the second conductive electrode and the transparent conductive film. The contrast of an AMOLED device in the ambient light can be improved, and self-illumination loss of an OLED can be minimized.
Description
Technical field
The present invention relates to a kind of active matrix/organic light emitting display (AMOLED, Active Matrix Organic Light Emitting Diode), particularly relate to a kind of organic light-emitting display device improving contrast.
Background technology
Traditional organic light emitting diode device has that top is luminous and the end is luminous, top illuminating device negative electrode adopts the low work function conductive electrode of half-reflection and half-transmission usually, anode adopts mirror surface metal or the multilayer conductive electrode structure of high work function, and end luminescent device negative electrode adopts the low work function conductive electrode of mirror surface usually, anode adopts transparency conductive electrode, when outdoor environment illumination is mapped to the light output surface of device, most surround lighting will be reflected by negative electrode or anode, thus contrast is poor under ambient light to cause AMOLED.
For organic LED display device, its surround lighting has bad impact for visual effect, and to the elimination of surround lighting in prior art, in display unit, increasing by a light absorbing zone, as shown in Figure 1, traditional organic light emitting display is primarily of a transparency carrier 100, multiple anode 101, one organic luminous energy layer 102, light absorbing zone 103 and multiple negative electrode 104 are formed, its Anodic 101 is configured on transparency carrier 100, organic luminous energy layer 102 to be configured on transparency carrier 100 and to cover anode 101, light absorbing zone 103 is configured on organic luminous energy layer 102, and negative electrode 104 is configured on light absorbing zone 103.Interfered by the multiple film layer structural deterioration of light absorbing zone after surround lighting is incident to this display unit inside, reduce its reflection, increase the contrast of display unit.Although this method can eliminate component environment light, also relatively eliminate the self-luminous of part Organic Light Emitting Diode, and not obvious for the change of display unit contrast, improve visual effect limited.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of organic light-emitting display device that can improve contrast.
For achieving the above object, the invention provides a kind of organic light-emitting display device, it includes the first conductive electrode, organic electro luminescent layer and second conductive electrode of fitting successively and arranging, described first conductive electrode comprises the first transparent electrode layer, reflective conductive electrode layer and the transparent conductive film of fitting successively and arranging, doped with silver halide nanoparticle and catalyst in this transparent conductive film, wherein this organic electro luminescent layer is located between this second conductive electrode and this transparent conductive film.
Described first conductive electrode also includes the second transparent electrode layer, and this second transparent electrode layer is between described organic electro luminescent layer and transparent conductive film.
Described second conductive electrode is semi-transparent semi-reflecting metal electrode.
Described metal electrode is magnesium, silver or magnesium silver alloy.
Described first transparent electrode layer is tin indium oxide, or indium zinc oxide or the mixture of the two.
Described reflective conductive electrode layer is argent or magnesium.
Organic light-emitting display device of the present invention, it includes the first conductive electrode, organic electro luminescent layer and the second conductive electrode, wherein the first conductive electrode comprises the transparent conductive film doped with silver halide nanoparticle and catalyst, see that light decomposes by silver halide, it can be dimmed rapidly under daylight and Ultraviolet radiation, absorb ultraviolet completely, visible ray is absorbed in neutral, and can reversible reaction be realized under catalyst action, get back to dark place, the fast quick-recovery water white transparency of energy, to promote organic light-emitting display device contrast under ambient light.
Accompanying drawing explanation
Fig. 1 is the structural section schematic diagram of conventional organic luminescence display;
Fig. 2 is the cross section structure schematic diagram of organic light-emitting display device first embodiment of the present invention;
Fig. 3 is the cross section structure schematic diagram of organic light-emitting display device second embodiment of the present invention.
Embodiment
For ease of having further understanding to structure of the present invention and the effect that reaches, the existing preferred embodiment that develops simultaneously by reference to the accompanying drawings is described in detail as follows.
Fig. 2 is the cross section structure schematic diagram of organic light-emitting display device first embodiment of the present invention, and Fig. 2 only demonstrates this display unit partial cross section structure of a corresponding Organic Light Emitting Diode unit.According to the present invention first specific embodiment, organic light-emitting display device of the present invention comprise fit successively arrange the first conductive electrode 200, organic electro luminescent layer 201 and the second conductive electrode 202, this second conductive electrode 202 can be that semi-transparent semi-reflecting metal electrode is as magnesium, silver or magnesium silver alloy.Wherein the first conductive electrode 200 comprise fit successively arrange the first transparent electrode layer 200a, reflective conductive electrode layer 200b, doped with the transparent conductive film 200c of silver halide nanoparticle and catalyst thereof and the second transparent electrode layer 200d.Wherein organic electro luminescent layer 201 is located between the second conductive electrode 202 and the second transparent electrode layer 200d.This first transparent electrode layer 200a can be tin indium oxide (ITO) film, or indium zinc oxide (IZO) or the mixture of the two, this reflective conductive electrode layer 200b can be argent or magnesium etc., and this conductive film is deposited on reflective conductive electrode layer 200b surface by the mode of evaporation by the solution containing the small nano particle of silver halide and catalyst thereof by this transparent conductive film 200c.When display unit of the present invention uses out of doors, surround lighting arrives transparent conductive film 200c surface through organic electro luminescent layer 201 and the second transparent electrode layer 200d, and this rete is due to containing silver halide nanoparticle, can see that light decomposes out of doors under high light and aggregate into black silver atoms group, reach extinction and reduce the effect of the reflectivity of reflecting electrode, so outdoor light would not be reflected by reflective conductive electrode layer 200b, thus improves the contrast of product out of doors under light and visuality.And when when indoor use, silver halide nanoparticle can realize reversible reaction under catalyst action, water white transparency can be recovered rapidly, the display effect of AMOLED device can not be affected.
Fig. 3 is the second specific embodiment cross section structure schematic diagram of organic light-emitting display device of the present invention, and Fig. 3 only demonstrates this display unit partial cross section structure of a corresponding Organic Light Emitting Diode unit.According to the present invention second specific embodiment, this organic light-emitting diode display dress comprising fit successively arrange the first conductive electrode 300, organic electro luminescent layer 301 and the second conductive electrode 302, this second conductive electrode can be that semi-transparent semi-reflecting metal electrode is as magnesium, silver or magnesium silver alloy.Wherein the first conductive electrode 300 comprises the transparent electrode layer 300a, the reflective conductive electrode layer 300b that fit successively and arrange and the transparent conductive film 300c doped with silver halide nanoparticle and catalyst thereof, and wherein this organic electro luminescent layer 301 is located between this second conductive electrode 302 and transparent conductive film 300c.This transparent electrode layer 300a can be tin indium oxide (ITO) film, or indium zinc oxide (IZO) or the mixture of the two, this reflective conductive electrode layer 300b can be argent or magnesium etc., this transparent conductive film 300c is in manufacturing process, can will be mixed with small nano-sized silver halide paricles and catalyst adds in target, then by the mode of sputter, this conductive film be deposited to reflective conductive electrode layer 300b surface.When display unit of the present invention uses out of doors, surround lighting arrives transparent conductive film 300c surface through organic electro luminescent layer 301, and this rete is because there is silver halide nanoparticle, can see that light decomposes out of doors under high light and aggregate into black silver atoms group, reach extinction and reduce the effect of the reflectivity of reflecting electrode, so outdoor light would not be reflected by reflective conductive electrode layer 300b, thus improves the contrast of product out of doors under light and visuality.And when when indoor use, silver halide particle can realize reversible reaction under catalyst action, water white transparency can be recovered rapidly, the display effect of AMOLED device can not be affected.The difference of this embodiment and the first embodiment be in in, transparent conductive film 300c and the second transparent electrode layer mixing manufacture are one deck membrane structure, form light absorbing zone, and this embodiment embodiment one structure of comparing is simpler, and are easy to operation and realize.
Organic light-emitting display device of the present invention, increases layer of transparent conductive film on anode reflective conductive electrode layer surface or add silver halide nanoparticle and catalyst thereof in its original transparent electrode layer.Silver halide nanoparticle in transparent conductive film and catalyst thereof, under high light, silver halide is shown in that light decomposes out of doors, aggregates into black silver atoms group, reaches extinction and reduces the reflectivity of reflecting electrode, so as to improving contrast.Silver halide is shown in that light decomposes, and can realize reversible reaction under catalyst action, and it can be dimmed rapidly under daylight and Ultraviolet radiation, absorbs ultraviolet completely, absorbs in neutral visible ray; Get back to dark place, can fast quick-recovery water white transparency.Therefore utilize the present invention, AMOLED device contrast under ambient light can be promoted and at utmost reduce the self luminous loss of OLED simultaneously.
Finally it should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted; although with reference to preferred embodiment to invention has been detailed description; have in any art and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the right person of defining.
Claims (6)
1. an organic light-emitting display device, it includes the first conductive electrode, organic electro luminescent layer and second conductive electrode of fitting successively and arranging, it is characterized in that, described first conductive electrode comprises the first transparent electrode layer, reflective conductive electrode layer and the transparent conductive film of fitting successively and arranging, doped with silver halide nanoparticle and catalyst in this transparent conductive film, wherein this organic electro luminescent layer is located between this second conductive electrode and this transparent conductive film.
2. organic light-emitting display device as claimed in claim 1, it is characterized in that, described first conductive electrode also includes the second transparent electrode layer, and this second transparent electrode layer is between described organic electro luminescent layer and transparent conductive film.
3. organic light-emitting display device as claimed in claim 1 or 2, it is characterized in that, described second conductive electrode is semi-transparent semi-reflecting metal electrode.
4. organic light-emitting display device as claimed in claim 3, it is characterized in that, described metal electrode is magnesium, silver or magnesium silver alloy.
5. organic light-emitting display device as claimed in claim 1 or 2, it is characterized in that, described first transparent electrode layer is tin indium oxide, or indium zinc oxide or the mixture of the two.
6. organic light-emitting display device as claimed in claim 1 or 2, it is characterized in that, described reflective conductive electrode layer is argent or magnesium.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953038A (en) * | 2015-07-09 | 2015-09-30 | 上海和辉光电有限公司 | Organic light-emitting display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002252086A (en) * | 2001-02-23 | 2002-09-06 | Toppan Printing Co Ltd | High polymer el element |
| US20080308794A1 (en) * | 2007-06-14 | 2008-12-18 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device, electronic device, and manufacturing method of light-emitting device |
| CN101764145A (en) * | 2008-12-23 | 2010-06-30 | 三星移动显示器株式会社 | Organic light emitting diode display |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002252086A (en) * | 2001-02-23 | 2002-09-06 | Toppan Printing Co Ltd | High polymer el element |
| US20080308794A1 (en) * | 2007-06-14 | 2008-12-18 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting device, electronic device, and manufacturing method of light-emitting device |
| CN101764145A (en) * | 2008-12-23 | 2010-06-30 | 三星移动显示器株式会社 | Organic light emitting diode display |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953038A (en) * | 2015-07-09 | 2015-09-30 | 上海和辉光电有限公司 | Organic light-emitting display device |
| CN104953038B (en) * | 2015-07-09 | 2017-09-26 | 上海和辉光电有限公司 | Organic light-emitting display device |
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