CN103413896A - Two-side light exiting OLED device and manufacturing method thereof - Google Patents
Two-side light exiting OLED device and manufacturing method thereof Download PDFInfo
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- CN103413896A CN103413896A CN2013103039992A CN201310303999A CN103413896A CN 103413896 A CN103413896 A CN 103413896A CN 2013103039992 A CN2013103039992 A CN 2013103039992A CN 201310303999 A CN201310303999 A CN 201310303999A CN 103413896 A CN103413896 A CN 103413896A
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Abstract
The invention provides a two-side light exiting OLED device and a manufacturing method of the two-side light exiting OLED device. The two-side light exiting OLED device comprises a substrate, anodes, an organic layer and cathodes, wherein the cathodes and the anodes are arranged in a staggered mode and partially overlapped, and the anodes, the organic layer and the cathodes can be rectangular or triangular or in the shape of a wave curve or in other shapes; the substrate can be made of glass or plastic or other light-transmitting materials, the anodes can be made of ITO or metal or conductive polymer or various composites, and the cathodes can be made of ITO or metal or various composite cathodes; the organic layer can be of a single-layer or multilayer or hybrid structure, and the organic layer can be made of light emitting materials such as a fluorescent material, a phosphorescent material and a polymer material. The two-side light exiting OLED device and the manufacturing method of the two-side light exiting OLED device can overcome the defects in the prior art, particularly, the whole manufacturing process of flexible substrate devices can be simplified, and the two-side light exiting OLED device is favorable for being industrialized.
Description
Technical field
The invention belongs to the technical field of organic electroluminescence such as flat panel display, illumination, be specifically related to a kind of OLED device that can two-sided bright dipping.
Background technology
Organic electroluminescence device (OLED) is as a kind of novel display device, and existing main flat-panel monitor, compares as liquid crystal display, has lot of advantages.The general structure of organic electroluminescence device is followed successively by: matrix, anode, organic layer, negative electrode.It is luminous that current OLED product is generally single face, if display can be realized lighting at two sides, can obtain better effect, thereby can greatly improve the practical value of OLED display screen, widens the application of display.At present, the OLED of application double-side has produced the device screens such as multimedia player, mobile phone, notebook computer.
In prior art, as Chinese patent application the 200610004422.1, the 200610036679.5th, two luminous components of preparation, luminous to different directions respectively on same device substrate; The both sides that are same device substrates as Chinese patent application 200510022930.8, CN200510052900.1 prepare respectively two OLED devices, and the direction outside substrate is luminous separately; Just like CN1589075, CN1575073, be also all to adopt polarized material to realize luminous; CN1612009 is used light transmission emission layer method etc.
Above-mentioned patent can realize the double-side function, but the device that these methods obtain, some thickness is too thick, and what have brings difficulty to OLED making or drive circuit design, can significantly increase cost.Therefore, research and develop and a kind ofly both can realize the double-side function, the structure that does not increase again cost is significant.
Summary of the invention
The object of the present invention is to provide OLED device of a kind of two-sided bright dipping and preparation method thereof.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of OLED device of two-sided bright dipping, comprise the substrate, anode, organic layer and the negative electrode that are cascading, described negative electrode is comprised of the cathode electrode unit be spaced on organic layer, anode is comprised of the anode unit be spaced on substrate, and cathode electrode unit and anode unit are staggered and overlap.
The surface of described substrate is plane, sphere or wave curved surface shape, anode, organic layer and negative electrode successively evaporation on described surface.
Described substrate adopts light transmissive material, as glass, plastics etc.
Described anode adopts ITO, metal, conducting polymer or composite material.
Described negative electrode adopts ITO, metal or composite material.
Described organic layer adopts individual layer, multilayer or mixed structure, and organic layer adopts small molecule material and the macromolecular materials such as fluorescence or phosphorescence.
A kind of preparation method of OLED device of two-sided bright dipping, comprise the following steps: at first, the substrate surface evaporation anode cleaned up, then evaporation organic layer on anode, last evaporation negative electrode on organic layer, the evaporation of described anode and negative electrode adopts mask method, and the negative electrode that evaporation obtains is comprised of the cathode electrode unit be spaced on organic layer, the anode that evaporation obtains is comprised of the anode unit be spaced on substrate, and cathode electrode unit and anode unit are staggered and overlap.
Described substrate, before cleaning, adopts the method for polishing or chemical corrosion to process substrate surface, makes substrate surface become sphere or wave curved surface.
Beneficial effect of the present invention is embodied in: the present invention in the organic layer both sides, adopts cathode electrode unit and anode unit is staggered and partly overlapping technological means, can realize the device double-side, overcome the shortcoming of dual emission device structure, complicated process of preparation in the prior art, device architecture is simple, particularly for the flexible base, board device, whole manufacturing process is oversimplified, be conducive to the industrialization of the OLED device of double-side.
The accompanying drawing explanation
Fig. 1 is one of cross section structure schematic diagram of OLED device of the present invention;
Fig. 2 is the beam projecting route map of OLED device shown in Figure 1;
Fig. 3 be OLED device of the present invention the cross section structure schematic diagram two;
In figure: 1, substrate; 2, anode; 3, organic layer; 4, negative electrode; 5, gap.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.It should be noted that, following execution mode only, be used to the present invention is described, is not limited to protection scope of the present invention.
1) processing of glass substrate: adopt the method for polishing or chemical corrosion to process glass surface, obtain required semispherical surface.
2) clean glass surface: after step 1), glass substrate is first taked the acetone ultrasonic cleaning, then takes the alcohol ultrasonic cleaning, cleans altogether 20min, dries stand-by.
3) organic layer preparation: through step 2), glass substrate is put into to vacuum coating equipment, adopt the method for evaporation on the semispherical surface of glass substrate, to prepare metal anode, each organic layer, its Anodic adopts the mask method evaporation.
4) negative electrode preparation: after step 3), adopt mask method evaporation cathode material, shape that should strict control cathode herein.That is to say, should strictly control its position and size when design negative electrode mask plate.
5), after step 4), the device after evaporation is encapsulated under high-purity N 2 environment of anhydrous and oxygen-free, thereby complete the making of organic electroluminescence device.
Referring to Fig. 3, the device architecture of made has following features: device is hemispherical, comprise the substrate 1, anode 2, organic layer 3 and the negative electrode 4 that are cascading, described negative electrode 4 is comprised of the cathode electrode unit be spaced on organic layer 3, anode 2 is comprised of the anode unit be spaced on substrate 1, and cathode electrode unit and anode unit are staggered and overlap.
1) clean glass surface: glass substrate is first taked the acetone ultrasonic cleaning, then takes the alcohol ultrasonic cleaning, cleans altogether 20min, dries stand-by.
2) organic layer preparation: after step 1), glass substrate is put into to vacuum coating equipment, adopt the method for evaporation to prepare metal anode, each organic layer, its Anodic adopts the mask method evaporation.
3) negative electrode preparation: through step 2), employing mask method evaporation cathode material, shape that herein should strict control cathode.That is to say, should strictly control its position and size when design negative electrode mask plate.
4), after step 3), the device after evaporation is encapsulated under high-purity N 2 environment of anhydrous and oxygen-free, thereby complete the making of organic electroluminescence device.
Referring to Fig. 1 and Fig. 2, the device architecture of made has following features: device is tabular, comprise the substrate 1, anode 2, organic layer 3 and the negative electrode 4 that are cascading, described negative electrode 4 is comprised of the cathode electrode unit be spaced on organic layer 3, anode 2 is comprised of the anode unit be spaced on substrate 1, and cathode electrode unit and anode unit are staggered and overlap.
The operation principle of the device that the present invention is prepared: the present invention utilizes the luminescence mechanism of existing OLED, by anode, negative electrode are divided into to spaced unit, make the organic layer bright dipping from the gap between anode unit, and the gap between cathode electrode unit is penetrated, realize double-side, anode unit and cathode electrode unit overlap in position, and assurance can complete corresponding luminescence process.
The present invention, by adopting the substrate of sphere or wave curved surface, can increase the overlapping area of cathode and anode, and its light-emitting area is increased, and photon numbers increases, thereby increases the brightness of device.In addition, adopt sphere or wave curved surface can also improve the efficiency of device, its former because: when light during from the electrode outgoing, owing to there being total reflection, so efficiency is lower, and the present invention is by adopting the substrate of sphere or wave curved surface, form a kind of bulge-structure, the ray ratio that makes incidence angle be greater than critical angle is dwindled, and therefore makes total reflection reduce, and has improved the efficiency of device.
Claims (8)
1. the OLED device of a two-sided bright dipping, it is characterized in that: comprise the substrate (1), anode (2), organic layer (3) and the negative electrode (4) that are cascading, described negative electrode (4) is comprised of the cathode electrode unit be spaced on organic layer (3), anode (2) is comprised of the anode unit be spaced on substrate (1), and cathode electrode unit and anode unit are staggered and overlap.
2. a kind of OLED device of two-sided bright dipping according to claim 1 is characterized in that: the surface of described substrate (1) is plane, sphere or wave curved surface shape, anode (2), organic layer (3) and negative electrode (4) successively evaporation on described surface.
3. a kind of OLED device of two-sided bright dipping according to claim 1, it is characterized in that: described substrate (1) adopts light transmissive material.
4. a kind of OLED device of two-sided bright dipping according to claim 1, it is characterized in that: described anode (2) adopts ITO, metal, conducting polymer or composite material.
5. a kind of OLED device of two-sided bright dipping according to claim 1, it is characterized in that: described negative electrode (4) adopts ITO, metal or composite material.
6. a kind of OLED device of two-sided bright dipping according to claim 1, it is characterized in that: described organic layer (3) adopts individual layer, multilayer or mixed structure, and organic layer adopts fluorescence or phosphor material.
7. the preparation method of the OLED device of a two-sided bright dipping, it is characterized in that, comprise the following steps: at first, at the surperficial evaporation anode of the substrate cleaned up (1) (2), then at the upper evaporation organic layer (3) of anode (2), finally at the upper evaporation negative electrode (4) of organic layer (3), the evaporation of described anode and negative electrode adopts mask method, the negative electrode that evaporation obtains (4) is comprised of the cathode electrode unit be spaced on organic layer (3), the anode that evaporation obtains (2) is comprised of the anode unit be spaced on substrate (1), cathode electrode unit and anode unit are staggered and overlap.
8. a kind of preparation method of OLED device of two-sided bright dipping according to claim 7, it is characterized in that: described substrate (1) is before cleaning, adopt the method for polishing or chemical corrosion to process substrate surface, make substrate surface become sphere or wave curved surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310303999.2A CN103413896B (en) | 2013-07-18 | 2013-07-18 | OLED of a kind of two-sided bright dipping and preparation method thereof |
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| CN201310303999.2A CN103413896B (en) | 2013-07-18 | 2013-07-18 | OLED of a kind of two-sided bright dipping and preparation method thereof |
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| CN103413896A true CN103413896A (en) | 2013-11-27 |
| CN103413896B CN103413896B (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016141699A1 (en) * | 2015-03-10 | 2016-09-15 | 京东方科技集团股份有限公司 | Light-emitting component and preparation method therefor, and display device |
| CN113193148A (en) * | 2021-04-27 | 2021-07-30 | 北京京东方技术开发有限公司 | Light-emitting substrate and display panel |
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| WO2016141699A1 (en) * | 2015-03-10 | 2016-09-15 | 京东方科技集团股份有限公司 | Light-emitting component and preparation method therefor, and display device |
| US9748524B2 (en) | 2015-03-10 | 2017-08-29 | Boe Technology Group Co., Ltd. | Light-emitting member and method for preparing the same as well as display device |
| CN113193148A (en) * | 2021-04-27 | 2021-07-30 | 北京京东方技术开发有限公司 | Light-emitting substrate and display panel |
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| CN103413896B (en) | 2016-04-06 |
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