CN100539789C - A kind of organic elctroluminescent device - Google Patents
A kind of organic elctroluminescent device Download PDFInfo
- Publication number
- CN100539789C CN100539789C CNB2007101608993A CN200710160899A CN100539789C CN 100539789 C CN100539789 C CN 100539789C CN B2007101608993 A CNB2007101608993 A CN B2007101608993A CN 200710160899 A CN200710160899 A CN 200710160899A CN 100539789 C CN100539789 C CN 100539789C
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- metallic cathode
- glass substrate
- film encapsulation
- organic elctroluminescent
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Abstract
A kind of organic elctroluminescent device, the ITO conductive layer, hole transmission layer, luminescent layer, electron transfer layer and the metallic cathode that comprise glass substrate and be successively set on the glass substrate upper surface from bottom to top, evaporation has the selenium thin-film encapsulation layer on metallic cathode.The present invention adopts vacuum vapour deposition to prepare one deck densification in the outside of metallic cathode, is difficult for the selenium thin-film encapsulation layer of oxidation; realized encapsulation to device; thereby reduced the erosion for device such as water, oxygen; formation significantly improves the life-span of device to effective protection of device metal negative electrode, organic material.
Description
Technical field
The present invention relates to a kind of light-emitting display device, be specifically related to a kind of organic elctroluminescent device.
Background technology
At present, Display Technique has developed into the third generation.First generation display device is a picture tube, and second generation display device is LCD and plasma display, and third generation display device is organic elctroluminescent device (OLED/PLED).Second generation display device is a main product at present, and third generation display device has arrived the eve of industrialization, and the life-span weak point is one of subject matter that hinders its industrialization.
The life-span of OLED device is decided by selected organic material on the one hand, also depends on the encapsulation of device on the other hand; Because negative electrode and organic material are very unstable, if the OLED device package is bad, negative electrode and organic material will react with gases such as water vapour in the vacuum chamber, oxygen, are easy to and will lose efficacy, cause whole OLED to reduce device lifetime, so just limited the process of OLED device industrialization.Thereby; for degeneration and the inefficacy of OLED in the long-term work process is inhibited; steady operation reaches enough life-spans; barrier to encapsulating material has proposed high requirement; the encapsulating material that plays the seal protection effect has just become to solve a break-through point of OLED problem device lifetime; dependence is to the high barrier of oxygen and steam, guarantee OLED preserve and use in reliability, be one prolong stability and life-span must be through approach.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art; a kind of thin, lightization that can realize device is provided; but crimpiness; reduce the erosion for device such as water, oxygen; formation is to effective protection of device cathodes, organic material, thereby significantly improves the organic elctroluminescent device in the life-span of device.
For achieving the above object, the technical solution used in the present invention is: the ITO conductive layer, hole transmission layer, luminescent layer, electron transfer layer and the metallic cathode that comprise glass substrate and be successively set on the glass substrate upper surface from bottom to top, evaporation has the selenium thin-film encapsulation layer on the said metallic cathode.
ITO conductive layer of the present invention links to each other with dc voltage electrode, and metallic cathode links to each other with the direct voltage negative pole.
The present invention adopts vacuum vapour deposition to prepare one deck densification in the outside of metallic cathode, is difficult for the selenium thin-film encapsulation layer of oxidation; realized encapsulation to device; thereby reduced the erosion for device such as water, oxygen; formation significantly improves the life-span of device to effective protection of device metal negative electrode, organic material.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the ITO conductive layer 5, hole transmission layer 4, luminescent layer 3, electron transfer layer 2 and the metallic cathode 1 that the present invention includes glass substrate 6 and be successively set on glass substrate 6 upper surfaces from bottom to top, ITO conductive layer 5 links to each other with the positive and negative electrode of direct voltage respectively with metallic cathode 1, and evaporation has selenium thin-film encapsulation layer 7 on the said metallic cathode 1.
The employing vacuum vapour deposition of the present invention under high vacuum condition forms selenium thin-film encapsulation layer 7 on metallic cathode 1; effectively overcome ectocine; the negative electrode and the luminescent layer of device are effectively protected, reduce the erosion for device such as water, oxygen, thereby significantly improve the life-span of device.Utilize this selenium thin-film encapsulation layer, change the background color of device, thereby reached raising contrast, more attractive in appearance, present the effect of beautiful selenium ruby look; Utilize this selenium thin-film encapsulation layer to change the luminosity spectral characteristic of device.
Claims (2)
1, a kind of organic elctroluminescent device, it is characterized in that: the ITO conductive layer (5), hole transmission layer (4), luminescent layer (3), electron transfer layer (2) and the metallic cathode (1) that comprise glass substrate (6) and be successively set on glass substrate (6) upper surface from bottom to top, said metallic cathode (1) is gone up evaporation selenium thin-film encapsulation layer (7).
2, organic elctroluminescent device according to claim 1 is characterized in that: said ITO conductive layer (5) links to each other with dc voltage electrode, and metallic cathode (1) links to each other with the direct voltage negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101608993A CN100539789C (en) | 2007-12-26 | 2007-12-26 | A kind of organic elctroluminescent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101608993A CN100539789C (en) | 2007-12-26 | 2007-12-26 | A kind of organic elctroluminescent device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101217839A CN101217839A (en) | 2008-07-09 |
| CN100539789C true CN100539789C (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101608993A Expired - Fee Related CN100539789C (en) | 2007-12-26 | 2007-12-26 | A kind of organic elctroluminescent device |
Country Status (1)
| Country | Link |
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| CN (1) | CN100539789C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103769A (en) * | 2013-04-09 | 2014-10-15 | 海洋王照明科技股份有限公司 | Organic light-emitting display and manufacturing method thereof |
| CN104103768A (en) * | 2013-04-09 | 2014-10-15 | 海洋王照明科技股份有限公司 | Organic light-emitting display and manufacturing method thereof |
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2007
- 2007-12-26 CN CNB2007101608993A patent/CN100539789C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101217839A (en) | 2008-07-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20101226 |