CN202127042U - Organic electroluminescence display device - Google Patents
Organic electroluminescence display device Download PDFInfo
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- CN202127042U CN202127042U CN2011201928442U CN201120192844U CN202127042U CN 202127042 U CN202127042 U CN 202127042U CN 2011201928442 U CN2011201928442 U CN 2011201928442U CN 201120192844 U CN201120192844 U CN 201120192844U CN 202127042 U CN202127042 U CN 202127042U
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- metal middle
- transmission layer
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Abstract
The utility model provides an organic electroluminescence display device, which comprises a glass substrate, an anode, a hole transmission layer, a luminous layer, an electronic transmission layer, a metal middle layer and a cathode. The anode, the hole transmission layer, the luminous layer, the electronic transmission layer, the metal middle layer and the cathode are sequentially arranged on the upper surface of the glass substrate from bottom to top. The metal middle layer is made of one material selected from aluminum, magnesium, copper, silver, gold and platinum, and the thickness of the metal middle layer ranges from 0.1nm to 5nm. A thin metal layer is added between the electronic transmission layer and the cathode in the traditional organic light emitting diode (OLED) device structure to serve as the middle layer. On one hand, the added metal middle layer improves evenness of interfaces between the electrodes and the organic layers and conductivity of the electrodes, on the other hand, good ohmic contact is formed between the electronic transmission layer and a metal middle layer film, so that injection capability of electrons is greatly improved, composite lighting ratio of the electrons and holes is remarkably increased, and lighting efficiency, lighting intensity and service life of the OLED device are remarkably prolonged.
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 elctroluminescent 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, metal 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 described metal intermediate layer adopted is a kind of among Al, Mg, Cu, Ag, Au, the Pt.
The thickness of said metal intermediate layer is 0.1-5nm.
The thickness of said metal 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 metal level of one deck between electron transfer layer and the negative electrode as the intermediate layer, this of increase layer metal 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 metal 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, metal 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 metal intermediate layer 6 is adopted is a kind of among Al, Mg, Cu, Ag, Au, the Pt, 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 (3)
1. an organic elctroluminescent device is characterized in that: the anode (2), hole transmission layer (3), luminescent layer (4), electron transfer layer (5), metal 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; The material that said metal intermediate layer (6) is adopted is a kind of among Al, Mg, Cu, Ag, Au, the Pt.
2. a kind of organic elctroluminescent device as claimed in claim 1 is characterized in that: the thickness of said metal intermediate layer (6) is 0.1-5nm.
3. a kind of organic elctroluminescent device as claimed in claim 2 is characterized in that: the thickness of said metal intermediate layer (6) is 1nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201928442U CN202127042U (en) | 2011-06-10 | 2011-06-10 | Organic electroluminescence display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201928442U CN202127042U (en) | 2011-06-10 | 2011-06-10 | Organic electroluminescence display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127042U true CN202127042U (en) | 2012-01-25 |
Family
ID=45490105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201928442U Expired - Fee Related CN202127042U (en) | 2011-06-10 | 2011-06-10 | Organic electroluminescence display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202127042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935712A (en) * | 2017-12-15 | 2019-06-25 | Tcl集团股份有限公司 | QLED device and preparation method thereof |
-
2011
- 2011-06-10 CN CN2011201928442U patent/CN202127042U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935712A (en) * | 2017-12-15 | 2019-06-25 | Tcl集团股份有限公司 | QLED device and preparation method thereof |
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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 |