CN108075049A - A kind of organic electroluminescence device - Google Patents
A kind of organic electroluminescence device Download PDFInfo
- Publication number
- CN108075049A CN108075049A CN201810003003.9A CN201810003003A CN108075049A CN 108075049 A CN108075049 A CN 108075049A CN 201810003003 A CN201810003003 A CN 201810003003A CN 108075049 A CN108075049 A CN 108075049A
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- CN
- China
- Prior art keywords
- sealant
- electroluminescence device
- organic electroluminescence
- cover plate
- substrate
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention relates to display technology field, more particularly to a kind of organic electroluminescence device, including substrate, encapsulation cover plate and the first sealant, wherein：The substrate and the encapsulation cover plate are oppositely arranged, and the figure that first sealant is formed is between the substrate and the encapsulation cover plate and connects the substrate and the encapsulation cover plate；The substrate is equipped with the packaging area for including organic luminous layer, and the figure that first sealant is formed is set for closed ring and around the packaging area；The corner parts for the figure that first sealant is formed are arc-shaped.Compared with existing encapsulating structure, circular arc corner can increase the stop length of the first sealant, and then improve the sealing effect to packaging area, improve the service life of organic electroluminescence device.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of organic electroluminescence device.
Background technology
Organic electroluminescent (Organic Light-Emitting Diode, OLED) device have low in energy consumption, visual angle it is big,
The advantages that fast response time, and can realize Flexible Displays, display panel field is had been widely used at present.Due to organic
Luminous organic material and metal material in electroluminescent device is bad to the tolerance performance of oxygen and water, therefore in manufacturing process
In processing need to be packaged to organic electroluminescence device, to slow down erosion of the water oxygen to organic electroluminescence device, how more
Good is packaged organic electroluminescence device to extend the major issue that its service life is current solution required in the industry.Current
Encapsulation technology in, generally using sealant bonding encapsulation cover plate by the way of organic electroluminescence device is packaged, in order to
The water oxygen barriering effect of the encapsulating structure is improved, generally also needs the coated area of increase sealant, however, the method for packing is to envelope
The sealing effect in the corner in dress region is bad, and water oxygen still has greater probability to be penetrated by packaging area corner, and organic electroluminescence is caused to send out
The service life of optical device declines.
The content of the invention
The present invention provides a kind of organic electroluminescence device, to solve organic electroluminescence device of the prior art
Packaging area corner sealing effect it is bad, cause organic electroluminescence device service life decline the problem of.
To achieve the above object, the present invention provides following technical solution：
A kind of organic electroluminescence device, including substrate, encapsulation cover plate and the first sealant, wherein：
The substrate and the encapsulation cover plate are oppositely arranged, the figure that first sealant is formed be located at the substrate with
Between the encapsulation cover plate and connect the substrate and the encapsulation cover plate；
The substrate is equipped with the packaging area for including organic luminous layer, and the figure that first sealant is formed is closed-loop
Shape and around the packaging area set；
The corner parts for the figure that first sealant is formed are arc-shaped.
Organic electroluminescence device provided by the invention includes substrate, encapsulation cover plate and the first sealant, substrate and encapsulation
The figure that cover board is formed by the first sealant connects, and the figure that the first sealant is formed is closed ring and will include on substrate
The packaging area of organic luminous layer surrounds, and the corner parts of the figure formed due to the first sealant are and existing to be arc-shaped
Encapsulating structure is compared, and circular arc corner can increase the stop length of the first sealant, and then improve the sealing effect to packaging area,
Improve the service life of organic electroluminescence device.
Optionally, the second sealant being arranged on the substrate is further included, second sealant is by water swelling material
Material is made；
The figure that the figure that second sealant is formed is formed for closed ring and around first sealant is set.
Further, in the non-water swelling of figure that second sealant is formed, the figure is towards the encapsulation
There is gap between the one side of cover board and the encapsulation cover plate；
Second sealant formed figure water swelling when, the figure towards the one side of the encapsulation cover plate with
The encapsulation cover plate abuts.
Further, second sealant is made of polyimide material.
Optionally, drier is equipped in the figure that first sealant is formed.
Further, the drier is arranged at the corner location for the figure that first sealant is formed.
Optionally, the packaging area is rectangle, and there are four the squares of fillet for tool for the figure that first sealant is formed
Shape.
Optionally, the viscosity of first sealant is more than 105mPa·s/25℃。
Further, the viscosity of second sealant is less than 5000mPas/25 DEG C.
Optionally, first sealant is made of epoxide resin material.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of organic electroluminescence device shown in FIG. 1；
Fig. 3 is the structure diagram after the second sealant water swelling in organic electroluminescence device shown in FIG. 1；
Fig. 4 is the structure diagram of another organic electroluminescence device provided in an embodiment of the present invention.
Reference numeral：
10, substrate；11, organic luminous layer；20, encapsulation cover plate；30, the first sealant；
40, the second sealant；50, drier.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, belongs to the scope of protection of the invention.
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of organic electroluminescence device, to solve existing skill
The sealing effect in the corner of the packaging area of the organic electroluminescence device in art is bad, causes making for organic electroluminescence device
The problem of being declined with the service life.
Referring specifically to organic electroluminescence device provided in this embodiment shown in Fig. 1, including substrate 10,20 and of encapsulation cover plate
First sealant 30, substrate 10 and encapsulation cover plate 20 are oppositely arranged, and the figure that the first sealant 30 is formed is located at substrate 10 and envelope
Between capping plate 20 and connecting substrate 10 and encapsulation cover plate 20.Referring back to shown in Fig. 2, substrate 10, which is equipped with, includes organic luminous layer 11
Packaging area, the first sealant 30 formed figure for closed ring and around packaging area set, 30 shape of the first sealant
Into figure corner parts to be arc-shaped.
In specific implementation, substrate 10 can be made of glass material, organic material or inorganic material, and encapsulation cover plate 20 can be by glass
Glass material or metal material are made, and the first sealant 30 can be made of epoxide resin material.As shown in Fig. 2, due to the present embodiment
Packaging area in the organic electroluminescence device of offer is rectangle, and the figure to form the first sealant 30 surrounds encapsulation region
Domain, in a kind of specific embodiment, there are four the rectangles of fillet for tool for the figure that the first sealant 30 is formed.Other embodiment
In, the shape shape for the figure that the first sealant 30 is formed should be configured according to the shape shape and size of organic luminous layer 11, and
It is both needed to be arranged to arc-shaped in the edge for the figure that the first sealant 30 is formed.
In organic electroluminescence device provided in this embodiment, organic luminous layer 11 in the packaging area on substrate 10 by
The closed cavity that substrate 10,20 and first sealant of encapsulation cover plate, 30 figure cooperatively form is sealed, with reference to shown in Fig. 2, by
In the figure that the first sealant 30 is formed corner parts to be arc-shaped, with using the close of horn structure in existing encapsulating structure
Envelope agent figure compare, circular arc corner can increase the stop length of the first sealant 30 so that extraneous steam and oxygen be not easy into
Enter inside closed cavity, and then improve the sealing effect to packaging area, improve the service life of organic electroluminescence device.
To further improve the sealing effect to organic luminous layer 11, in a kind of specific embodiment, referring to Fig. 1 and Fig. 2
It is shown, further include the second sealant 40 being arranged on substrate 10 in organic electroluminescence device provided in this embodiment, second
Sealant 40 is made of water uptake expansion material；The figure that second sealant 40 is formed is for closed ring and around the first sealant 30
The figure of formation is set.Specifically, the material of the second sealant 40 has the increased characteristic of volume after absorption moisture, second
Its volume increases after the figure of sealant 40 runs into extraneous steam, and then can reduce between the second sealant 40 and encapsulation cover plate 20
Gap so that between steam is not easy to enter back into the figure that the figure of the first sealant 30 formation and the second sealant 40 are formed,
Further improve the sealing effect to organic luminous layer 11.
Figure to prevent the second sealant 40 from being formed between encapsulation cover plate 20 coordinates tension after water swelling, and then
The bonding strength led to the problem of between the figure of 20 and first sealant 30 of encapsulation cover plate formation declines, a kind of specific embodiment party
It is shown in Figure 1 in formula, in the non-water swelling of the figure of the second sealant 40 formation, the figure of the second sealant 40 formation
Towards having gap between the one side of encapsulation cover plate 20 and encapsulation cover plate 20, with reference to shown in Fig. 3, formed in the second sealant 40
During figure water swelling, the figure that the second sealant 40 is formed is abutted towards the one side of encapsulation cover plate 20 with encapsulation cover plate 20.It is logical
Cross the gap can reserve the second sealant 40 formation figure water swelling needed for space, reduce 40 shape of the second sealant
Into figure upon inflation to encapsulation cover plate 20 generate active force so that encapsulation cover plate 20 is formed with the first sealant 30
Figure between bonding strength be not easy to decline due to the second sealant 40 expands.
In specific implementation, there is water absorption behavior and the material non-corrosive to substrate 10, encapsulation cover plate 20 can be employed as
Second sealant 40, in a kind of specific embodiment, the second sealant 40 is made of polyimide material.Polyimide material has
There is the characteristic of water swelling, may conform to the second sealant 40 uses property requirements.
Organic electroluminescence device provided in this embodiment is packaged organic luminous layer 11 during its use
Still there is certain probability that can enter steam in closed cavity, to reduce influence caused by steam works normally organic luminous layer 11,
It is shown in Figure 4, drier 50 is equipped in the figure that the first sealant 30 is formed.It is formed to further improve the first sealant 30
Figure corner location sealing effect, in a kind of concrete mode shown in Fig. 4, drier 50 is arranged at the first sealant 30
At the corner location of the figure of formation, the corner for the figure that the absorbable at least a portion of drier 50 is formed by the first sealant 30
The steam entered at position improves the sealing effect of the corner location for the figure that the first sealant 30 is formed, and reduces steam to having
Influence caused by machine luminescent layer 11 works normally.
To prevent the first sealant 30 and the second sealant 40 from generating fusion phenomenon in use, the first sealing need to be made
The viscosity of 30 and second sealant 40 of agent has larger difference, and then reduces the probability that the two generates fusion.A kind of specific reality
It applies in mode, the viscosity of the first sealant 30 is more than 105MPas/25 DEG C, and the viscosity of the second sealant 40 is less than
5000mPas/25 DEG C, it can prevent the first sealant 30 and the second sealant 40 from generating fusion in use, and then ensure
To the sealing effect of organic luminous layer 11.
Obviously, those skilled in the art can carry out the embodiment of the present invention various modification and variations without departing from this hair
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
1. a kind of organic electroluminescence device, which is characterized in that including substrate, encapsulation cover plate and the first sealant, wherein：
The substrate and the encapsulation cover plate are oppositely arranged, and the figure that first sealant is formed is located at the substrate and described
Between encapsulation cover plate and connect the substrate and the encapsulation cover plate；
The substrate, which is equipped with, includes the packaging area of organic luminous layer, the figure that first sealant is formed be closed ring and
It is set around the packaging area；
The corner parts for the figure that first sealant is formed are arc-shaped.
2. organic electroluminescence device according to claim 1, which is characterized in that further include and be arranged on the substrate
Second sealant, second sealant are made of water uptake expansion material；
The figure that the figure that second sealant is formed is formed for closed ring and around first sealant is set.
3. organic electroluminescence device according to claim 2, which is characterized in that in the figure that second sealant is formed
During the non-water swelling of shape, the figure is towards having gap between the one side of the encapsulation cover plate and the encapsulation cover plate；
Second sealant formed figure water swelling when, the figure towards the one side of the encapsulation cover plate with it is described
Encapsulation cover plate abuts.
4. organic electroluminescence device according to claim 2, which is characterized in that second sealant is by polyimides
Material is made.
5. organic electroluminescence device according to claim 1, which is characterized in that the figure that first sealant is formed
It is interior to be equipped with drier.
6. organic electroluminescence device according to claim 5, which is characterized in that the drier is arranged at described first
At the corner location for the figure that sealant is formed.
7. organic electroluminescence device according to claim 1, which is characterized in that the packaging area is rectangle, described
There are four the rectangles of fillet for tool for the figure that first sealant is formed.
8. organic electroluminescence device according to claim 1, which is characterized in that the viscosity of first sealant is more than
105mPa·s/25℃。
9. organic electroluminescence device according to claim 2, which is characterized in that the viscosity of second sealant is less than
5000mPa·s/25℃。
10. organic electroluminescence device according to claim 1, which is characterized in that first sealant is by asphalt mixtures modified by epoxy resin
Fat material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003003.9A CN108075049B (en) | 2018-01-02 | 2018-01-02 | Organic electroluminescent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003003.9A CN108075049B (en) | 2018-01-02 | 2018-01-02 | Organic electroluminescent device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108075049A true CN108075049A (en) | 2018-05-25 |
| CN108075049B CN108075049B (en) | 2020-03-17 |
Family
ID=62156279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810003003.9A Active CN108075049B (en) | 2018-01-02 | 2018-01-02 | Organic electroluminescent device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108075049B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020118838A1 (en) * | 2018-12-13 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2020206984A1 (en) * | 2019-04-12 | 2020-10-15 | 昆山国显光电有限公司 | Display panel and manufacturing method therefor |
| US11394003B2 (en) * | 2019-08-07 | 2022-07-19 | Boe Technology Group Co., Ltd. | Cover plate, display panel, display device and method for encapsulating display panel |
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| CN101256969A (en) * | 2007-02-28 | 2008-09-03 | 康宁股份有限公司 | Seal for light emitting display device and method |
| US20100141136A1 (en) * | 2008-12-10 | 2010-06-10 | Seung-Joon Yoo | Organic light emitting display |
| CN102939677A (en) * | 2010-06-15 | 2013-02-20 | 丰田自动车株式会社 | Fuel cell and method for manufacturing fuel cell |
| CN105131887A (en) * | 2015-09-28 | 2015-12-09 | 京东方科技集团股份有限公司 | Box sealing adhesive, preparation method of box sealing adhesive, display panel mother board and manufacturing method of display panel mother board |
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2018
- 2018-01-02 CN CN201810003003.9A patent/CN108075049B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256969A (en) * | 2007-02-28 | 2008-09-03 | 康宁股份有限公司 | Seal for light emitting display device and method |
| US20100141136A1 (en) * | 2008-12-10 | 2010-06-10 | Seung-Joon Yoo | Organic light emitting display |
| CN102939677A (en) * | 2010-06-15 | 2013-02-20 | 丰田自动车株式会社 | Fuel cell and method for manufacturing fuel cell |
| CN105131887A (en) * | 2015-09-28 | 2015-12-09 | 京东方科技集团股份有限公司 | Box sealing adhesive, preparation method of box sealing adhesive, display panel mother board and manufacturing method of display panel mother board |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020118838A1 (en) * | 2018-12-13 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US11444266B2 (en) | 2018-12-13 | 2022-09-13 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and display device |
| WO2020206984A1 (en) * | 2019-04-12 | 2020-10-15 | 昆山国显光电有限公司 | Display panel and manufacturing method therefor |
| US11394003B2 (en) * | 2019-08-07 | 2022-07-19 | Boe Technology Group Co., Ltd. | Cover plate, display panel, display device and method for encapsulating display panel |
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| Publication number | Publication date |
|---|---|
| CN108075049B (en) | 2020-03-17 |
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