CN202127043U - Display device capable of lighting by adopting organic electricity - Google Patents
Display device capable of lighting by adopting organic electricity Download PDFInfo
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- CN202127043U CN202127043U CN201120193674XU CN201120193674U CN202127043U CN 202127043 U CN202127043 U CN 202127043U CN 201120193674X U CN201120193674X U CN 201120193674XU CN 201120193674 U CN201120193674 U CN 201120193674U CN 202127043 U CN202127043 U CN 202127043U
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- lighting
- alloy
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- organic
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Abstract
The utility model provides a display device capable of lighting by adopting organic electricity, comprising a glass base plate, and a positive pole, a hole transmission layer, a lighting layer, an electron transmission layer, a middle layer and a negative pole which are arranged on the upper surface of the glass base plate in sequence from bottom to top, wherein the middle layer is made from one of barium-aluminum alloy, calloy, magnesium-silver alloy and lithium-aluminum alloy, and the thickness of the middle layer ranges from 0.1nm and 5nm. In the display device, the middle layer is formed in a way that in a very thin alloy layer is added between the electrode transmission layer and the negative pole layer of a traditional OLED (Organic Light Emitting Diode) device structure; and with the alloy layer, on the one hand, the evenness of an interface between electrodes and an organic layer and the conductivity of the electrodes can be improved, and on the other hand, good ohmic contact is formed between the electrode transmission layer and a film of the alloy middle layer, thus greatly improving the injection capacity of electrons, so that the probability of lighting by compounding between the electrodes and a hole is enhanced obviously, and the lighting efficiency, the lighting brightness and the service life of the OLED device are improved obviously.
Description
Technical field
The utility model relates to the flat panel display field, particularly a kind of organic elctroluminescent device.
Background technology
OLED (Organic Light Emitting Diode; Organic Light Emitting Diode) is the illumination and the display unit of a new generation; Have series of advantages such as, composition wide, in light weight from main light emission, low-voltage DC driven, full fixed line, visual angle and technology are simple, become current flat panel display hot research fields.Luminous efficiency and luminescent lifetime are two critical problems of organic electroluminescence device practicability, but there is a theoretical limit in electroluminescent efficiency.In order can under the situation that needs high light such as illumination or Backlight For Liquid Crystal Display Panels etc., to be applied, must develop the organic electroluminescence device of high efficiency, high brightness.
After OLED device layers of material is confirmed; How better to improve the luminous efficiency of device and the focus that brightness becomes people's research; The luminescence mechanism of organic electroluminescence device comprises that electronics and hole are from the injection of electrode, the formation and the recombination luminescence of exciton; Wherein, the injection balance in electronics and hole is very important.In organic electroluminescence device; Owing to have ability between organic layer and the electrode; Thereby the formation interface potential barrier, organic layer will be injected in electronics and hole just must overcome interface potential barrier, so the contact property of organic layer and electrode directly influences the injection efficiency of charge carrier.
The utility model content
The purpose of the utility model has been to provide the organic electroluminescence device of a kind of high brightness, high-luminous-efficiency, long service life.
In order to achieve the above object, the technical scheme of the utility model employing is:
A kind of organic elctroluminescent device, the anode, hole transmission layer, luminescent layer, electron transfer layer, intermediate layer and the negative electrode that comprise glass substrate and be successively set on the glass substrate upper surface from bottom to top.
The material that adopt in described intermediate layer is a kind of in barium aluminium alloy, calloy, magnesium silver alloy, the lithium-aluminium alloy.
The thickness in described intermediate layer is 0.1-5nm.
The thickness in said intermediate layer is 1nm.
Compared with prior art; The utility model has following beneficial effect at least: a kind of organic elctroluminescent device of the utility model; Through in traditional OLED device architecture, increasing the very thin alloy-layer of one deck between electron transfer layer and the negative electrode as the intermediate layer, this of increase layer alloy intermediate layer improved the evenness of electrode and organic interface layer and the conductivity of electrode on the one hand; On the other hand; Between electron transfer layer and this alloy intermediate layer film, formed good Ohmic contact; Improve the injectability of electronics greatly, made the luminous probability of electronics and hole-recombination obviously strengthen, significantly improved luminous efficiency, luminosity and the life-span of OLED device.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the structure and the operation principle of the utility model are done further explain.
It is said to see also Fig. 1, and a kind of organic elctroluminescent device of the utility model comprises glass substrate 1 and is successively set on the composition metal anode 2 of glass substrate 1 upper surface, hole transmission layer 3, luminescent layer 4, electron transfer layer 5, intermediate layer 6 and metallic cathode 7 from bottom to top; Composition metal anode 2 links to each other with the positive and negative electrode of direct voltage respectively with metallic cathode 7; The material that intermediate layer 6 is adopted is a kind of in barium aluminium alloy, calloy, magnesium silver alloy, the lithium-aluminium alloy, and thickness is 0.1-5nm, preferred 1nm.
The above is merely a kind of execution mode of the utility model; It or not whole or unique execution mode; The conversion of any equivalence that those of ordinary skills take the utility model technical scheme through reading the utility model specification, the claim that is the utility model contains.
Claims (4)
1. an organic elctroluminescent device is characterized in that: the anode (2), hole transmission layer (3), luminescent layer (4), electron transfer layer (5), intermediate layer (6) and the negative electrode (7) that comprise glass substrate (1) and be successively set on glass substrate (1) upper surface from bottom to top.
2. a kind of organic elctroluminescent device as claimed in claim 1 is characterized in that: the material that described intermediate layer (6) are adopted is a kind of in barium aluminium alloy, calloy, magnesium silver alloy, the lithium-aluminium alloy.
3. according to claim 1 or claim 2 a kind of organic elctroluminescent device, it is characterized in that: the thickness of said intermediate layer (6) is 0.1-5nm.
4. a kind of organic elctroluminescent device as claimed in claim 3 is characterized in that: the thickness of said intermediate layer (6) is 1nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193674XU CN202127043U (en) | 2011-06-10 | 2011-06-10 | Display device capable of lighting by adopting organic electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193674XU CN202127043U (en) | 2011-06-10 | 2011-06-10 | Display device capable of lighting by adopting organic electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127043U true CN202127043U (en) | 2012-01-25 |
Family
ID=45490106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120193674XU Expired - Fee Related CN202127043U (en) | 2011-06-10 | 2011-06-10 | Display device capable of lighting by adopting organic electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202127043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10964906B2 (en) | 2018-08-01 | 2021-03-30 | Shanghai Tianma AM-OLED Co., Ltd. | Organic light-emitting display panel and organic light-emitting display apparatus |
-
2011
- 2011-06-10 CN CN201120193674XU patent/CN202127043U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10964906B2 (en) | 2018-08-01 | 2021-03-30 | Shanghai Tianma AM-OLED Co., Ltd. | Organic light-emitting display panel and organic light-emitting display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20120610 |