CN109659446A - High reliability OLED screen body - Google Patents
High reliability OLED screen body Download PDFInfo
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- CN109659446A CN109659446A CN201811570971.4A CN201811570971A CN109659446A CN 109659446 A CN109659446 A CN 109659446A CN 201811570971 A CN201811570971 A CN 201811570971A CN 109659446 A CN109659446 A CN 109659446A
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- layer
- screen body
- oled screen
- high reliability
- protective layer
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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
- H10K50/844—Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
This application discloses a kind of high reliability OLED screen bodies; including substrate, first electrode, auxiliary electrode, insulating layer, organic function layer and the second electrode set gradually; insulating layer wraps up auxiliary electrode, and insulating layer is equipped with the protective layer for isolated insulation layer and organic function layer.The application by being added one layer of ultra-thin dense protective layer on the insulating layer; it can prevent from the photoresist of insulating layer from releasing substance to contact with organic function layer; it prevents luminous zone from shrinking, damage of the high-energy light to organic function layer can also be stopped, improve OLED screen body in the reliability of outdoor application.
Description
Technical field
This application involves a kind of screen bodies, and in particular to a kind of high reliability OLED screen body.
Background technique
OLED (Organic Light Emitting Diode, Chinese name Organic Light Emitting Diode) refers to organic semiconductor
Material and luminescent material are under electric field driven, the phenomenon that injection by carrier with composite guide photoluminescence.According to this luminous original
It manages and display is made or illuminating product is referred to as organic light emitting display or organic light emission illuminating product.
Needed in OLED screen body insulating layer carry out electrical isolation, usually using organic photoresist as insulating layer (
Pixel confining layer is also commonly referred to as in display field), reduce technical process.But photoresist screen body work long hours or
(high temperature, UV irradiation etc.) has substance and releases (water, solvent, decomposition product etc.) erosion organic function layer under outside stimulus, causes
It shrinks luminous zone.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of high reliability OLED screen body.
The application provides a kind of high reliability OLED screen body, including set gradually substrate, first electrode, auxiliary electrode,
Insulating layer, organic function layer and second electrode, insulating layer wrap up auxiliary electrode, and insulating layer, which is equipped with, to be used for isolated insulation layer and have
The protective layer of machine functional layer.The application can prevent the light of insulating layer by the way that one layer of ultra-thin dense protective layer is added on the insulating layer
It causes resist to release substance to contact with organic function layer, prevents luminous zone from shrinking, high-energy light can also be stopped to organic function
The damage of ergosphere improves OLED screen body in the reliability of outdoor application.
Preferably, the water oxygen transmitance of protective layer is lower than 10-6g/(m2·day).Using the low protective layer of water oxygen transmitance,
It can preferably stop photoresist to release substance to contact with organic function layer, reduce and shrink.
Preferably, the OTR oxygen transmission rate of protective layer is lower than 100cm3/(m2·day·Pa).Using the low guarantor of OTR oxygen transmission rate
Sheath can preferably stop photoresist to release substance and contact with organic function layer, reduce and shrink.
Preferably, the material for constituting protective layer is oxide, can be metal oxide, is also possible to nonmetallic oxidation
Interface affinity between object, with first electrode ITO is more preferable.
Preferably, oxide is one of aluminium oxide, titanium oxide, zinc oxide, silica etc. or a variety of.
Preferably, protective layer is prepared by atomic layer deposition method or atomic layer osmosis.
Preferably, protective layer is deposited using whole face, the first electrode that insulating layer is completely covered and is exposed at outside insulating layer.Absolutely
Edge layer is usually criss-cross is distributed on the first electrode, to carry out pixel restriction；Whole face vapor deposition can make first electrode ITO and have
The energy level of the organic function layer of the interface of machine functional layer bends, so that it is organic to enter carrier by the effect of tunnelling
Functional layer improves carrier and injects effect；When using flexible parent metal, the addition of the protective layer of whole face vapor deposition can reduce water oxygen transmission
Rate improves the packaging effect of screen body.
Preferably, protective layer passes through graphical treatment；Protective layer wraps up insulating layer, exposes a part knot of first electrode
Structure.
Preferably, the protective layer thickness of whole face vapor deposition is 0.1-10nm；It is furthermore preferred that the protective layer thickness of whole face vapor deposition is
1-5nm.Protective layer thickness is adjustable, and the too small then protective effect of thickness is unobvious, and thickness is excessive, can be because that can not cause due to tunnelling
Voltage swells；Under the acceptable range of voltage, thickness can be made big as far as possible；Experiment shows that the protective layer thickness of whole face vapor deposition is excellent
It is selected as 0.1-10nm, more preferably 1-5nm.
Preferably, use the protective layer thickness of graphical treatment for 0.1-300nm.
The application has the advantages and positive effects of: the application by use photoresist as insulating layer
The method for increasing by one layer of dense protective layer on oled substrate stops photoresist to release substance and contacts with organic function layer, also
It can stop damage of the high-energy lights such as UV light to organic function layer, on the basis of not influencing its galvanoluminescence efficiency, prevent
Only shield in body use process and act on lower contraction in external condition (high temperature, the high-energy lights such as UV light), improves OLED screen body in room
The outer reliability used.Or screen body short circuit can be prevented to a certain extent.
The technical issues of in addition to the application described above solution, constitutes the technical characteristic of technical solution and by these
Except advantage brought by the technical characteristic of technical solution, wrapped in other technologies problem that the application can solve, technical solution
Advantage brought by the other technical characteristics contained and these technical characteristics, makees further details of hereinafter in conjunction with attached drawing
Explanation.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the high reliability OLED screen body structural schematic diagram that the embodiment of the present application 1- embodiment 4 provides；
Fig. 2 is the high reliability OLED screen body structural schematic diagram that the embodiment of the present application 5 and embodiment 6 provide；
Fig. 3 is the OLED screen body structural schematic diagram that the application comparative example 1 provides.
In figure: 1, substrate；2, first electrode；3, organic function layer；4, second electrode；5, auxiliary electrode；6, insulating layer；7,
Protective layer.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to just
Part relevant to invention is illustrated only in description, attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1
Referring to FIG. 1, the present embodiment provides a kind of high reliability OLED screen body, including substrate 1, it is successively set on substrate 1
On first electrode 2, organic function layer 3 and second electrode 4；Graphical auxiliary is equipped between first electrode 2 and organic function layer 3
Electrode 5 (such as auxiliary electrode 5 can be in a crisscross manner latticed)；Auxiliary electrode 5 is externally provided with insulating layer 6, the package auxiliary of insulating layer 6
5 surface of electrode；Insulating layer 6 is externally provided with the protective layer 7 for isolated insulation layer 6 and organic function layer 3.Wherein, protective layer 7 uses
It with a thickness of the dense oxide aluminium film of 1nm, is deposited by atomic layer deposition method whole face, insulating layer 6 is completely covered and is exposed at insulation
First electrode 2 outside layer 6.Aluminum oxide film water oxygen transmitance as protective layer 7 is lower than 10-6g/(m2Day), oxygen is saturating
Rate is crossed lower than 100cm3/(m2·day·Pa)。
Embodiment 2
Referring to FIG. 1, main part is same as Example 1 the present embodiment provides a kind of high reliability OLED screen body, it is different
Place is protective layer 7 with a thickness of 1.5nm.
Embodiment 3
Referring to FIG. 1, main part is same as Example 1 the present embodiment provides a kind of high reliability OLED screen body, it is different
Place is protective layer 7 with a thickness of 2.5nm.
Embodiment 4
Referring to FIG. 1, main part is same as Example 1 the present embodiment provides a kind of high reliability OLED screen body, it is different
Place is protective layer 7 with a thickness of 5nm.
Embodiment 5
Referring to FIG. 2, the present embodiment provides a kind of high reliability OLED screen body, including substrate 1, it is successively set on substrate 1
On first electrode 2, organic function layer 3 and second electrode 4；Graphical auxiliary is equipped between first electrode 2 and organic function layer 3
Electrode 5 (such as auxiliary electrode 5 can be in a crisscross manner latticed)；Auxiliary electrode 5 is externally provided with insulating layer 6；The package auxiliary of insulating layer 6
Electrode surface, insulating layer 6 are externally provided with the protective layer 7 for isolated insulation layer 6 and organic function layer 3.Wherein, protective layer 7 uses
It with a thickness of the dense oxide zinc film of 0.1nm, is prepared by atomic layer osmosis, through graphical treatment, the first electricity of exposed part
Pole 2, but still fully wrapped around insulating layer 6.Dense oxide zinc film water oxygen transmitance as protective layer 7 is lower than 10-6g/(m2·
Day), OTR oxygen transmission rate is lower than 100cm3/(m2·day·Pa)。
Embodiment 6
Referring to FIG. 2, the present embodiment provides a kind of high reliability OLED screen body, including substrate 1, it is successively set on substrate 1
On first electrode 2, organic function layer 3 and second electrode 4；Graphical auxiliary is equipped between first electrode 2 and organic function layer 3
Electrode 5 (such as auxiliary electrode 5 can be in a crisscross manner latticed)；Auxiliary electrode 5 is externally provided with insulating layer 6, the package auxiliary of insulating layer 6
Electrode surface；Insulating layer 6 is externally provided with the protective layer 7 for isolated insulation layer 6 and organic function layer 3.Wherein, protective layer 7 uses
It with a thickness of the dense oxide titanium film of 300nm, is prepared by atomic layer deposition method, through graphical treatment, the first electricity of exposed part
Pole 2, but still fully wrapped around insulating layer 6.Dense oxide titanium film water oxygen transmitance as protective layer 7 is lower than 10-6g/(m2·
Day), OTR oxygen transmission rate is lower than 100cm3/(m2·day·Pa)。
Comparative example 1
Referring to FIG. 3, this comparative example provides a kind of OLED screen body, including substrate 1, the first electrode of setting on substrate 1
2, organic function layer 3 and second electrode 4；Patterned auxiliary electrode 5 is equipped at intervals between first electrode 2 and organic function layer 3；
Auxiliary electrode 5 is externally provided with insulating layer 6, and insulating layer 6 wraps up auxiliary electrode surface.
Performance test
The OLED screen body provided to embodiment 1- embodiment 6 and comparative example 1 is surveyed under 40mA constant current at normal temperature
Examination measures voltage and luminous efficiency, and measures the luminous zone 380nm and irradiate after-contraction value for 24 hours under a standard sunlight intensity,
Test result is as shown in table 1.
Table 1
| Sample | Voltage (V) | Luminous efficiency (cd/A) | It tests after-contraction value (μm) |
| Embodiment 1 | 4 | 21.8 | 33 |
| Embodiment 2 | 4.2 | 23.7 | 20 |
| Embodiment 3 | 4.6 | 22.6 | 8 |
| Embodiment 4 | 7 | 21.5 | 0 |
| Embodiment 5 | 3.8 | 21.7 | 32 |
| Embodiment 6 | 3.9 | 21.4 | 0 |
| Comparative example 1 | 3.9 | 21.6 | 40 |
From table 1 it follows that whole face vapor deposition embodiment to screen body photoelectric properties there is no larger impact in the case where,
Shrinkage phenomenon caused by sunlamp irradiates is greatly improved.The embodiment being graphically deposited is not influencing the feelings to screen body photoelectric properties
Under condition, shrinkage phenomenon caused by sunlamp irradiates is greatly improved.The environmental reliability for shielding body is promoted.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of high reliability OLED screen body, including substrate (1), first electrode (2), the auxiliary electrode (5), insulation set gradually
Layer (6), organic function layer (3) and second electrode (4), insulating layer (6) wrap up auxiliary electrode (5), which is characterized in that the insulation
Layer (6) is equipped with the protective layer (7) for the insulating layer (6) Yu organic function layer (3) to be isolated.
2. high reliability OLED screen body according to claim 1, which is characterized in that the water oxygen of the protective layer (7) penetrates
Rate is lower than 10-6g/(m2·day)。
3. high reliability OLED screen body according to claim 1, which is characterized in that the oxygen of the protective layer (7) penetrates
Rate is lower than 100cm3/(m2·day·Pa)。
4. high reliability OLED screen body according to claim 1, which is characterized in that constitute the material of the protective layer (7)
For oxide.
5. high reliability OLED screen body according to claim 4, which is characterized in that the oxide is aluminium oxide, oxidation
One of titanium, zinc oxide, silica are a variety of.
6. high reliability OLED screen body according to claim 1, which is characterized in that the protective layer (7) passes through atomic layer
Sedimentation or atomic layer osmosis are prepared.
7. high reliability OLED screen body according to claim 1, which is characterized in that the protective layer (7) is steamed using whole face
Plating is completely covered the insulating layer (6) and is exposed at the external first electrode (2) of the insulating layer (6).
8. high reliability OLED screen body according to claim 7, which is characterized in that the protective layer (7) is with a thickness of 0.1-
10nm, preferably 1-5nm.
9. high reliability OLED screen body according to claim 1, which is characterized in that the protective layer (7) passes through graphical
Processing；The protective layer (7) wraps up the insulating layer (6).
10. high reliability OLED screen body according to claim 9, which is characterized in that the protective layer (7) is with a thickness of 0.1-
300nm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570971.4A CN109659446A (en) | 2018-12-21 | 2018-12-21 | High reliability OLED screen body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570971.4A CN109659446A (en) | 2018-12-21 | 2018-12-21 | High reliability OLED screen body |
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| Publication Number | Publication Date |
|---|---|
| CN109659446A true CN109659446A (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811570971.4A Pending CN109659446A (en) | 2018-12-21 | 2018-12-21 | High reliability OLED screen body |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5853905A (en) * | 1997-09-08 | 1998-12-29 | Motorola, Inc. | Efficient single layer electroluminescent device |
| CN1535095A (en) * | 2003-03-28 | 2004-10-06 | ������������ʽ���� | Organic electroluminescence element and mfg. method thereof |
| TW200535516A (en) * | 2004-04-30 | 2005-11-01 | Fujitsu Ltd | Liquid crystal display and process for fabricating the same |
| WO2008126267A1 (en) * | 2007-03-30 | 2008-10-23 | Pioneer Corporation | Light emitting device |
| CN103024960A (en) * | 2012-11-30 | 2013-04-03 | 昆山维信诺显示技术有限公司 | Organic light emitting diode (OLED) lighting panel, preparation method and OLED lighting device |
| CN108511621A (en) * | 2018-03-08 | 2018-09-07 | 京东方科技集团股份有限公司 | A kind of display panel and its manufacturing method |
-
2018
- 2018-12-21 CN CN201811570971.4A patent/CN109659446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5853905A (en) * | 1997-09-08 | 1998-12-29 | Motorola, Inc. | Efficient single layer electroluminescent device |
| CN1535095A (en) * | 2003-03-28 | 2004-10-06 | ������������ʽ���� | Organic electroluminescence element and mfg. method thereof |
| TW200535516A (en) * | 2004-04-30 | 2005-11-01 | Fujitsu Ltd | Liquid crystal display and process for fabricating the same |
| WO2008126267A1 (en) * | 2007-03-30 | 2008-10-23 | Pioneer Corporation | Light emitting device |
| CN103024960A (en) * | 2012-11-30 | 2013-04-03 | 昆山维信诺显示技术有限公司 | Organic light emitting diode (OLED) lighting panel, preparation method and OLED lighting device |
| CN108511621A (en) * | 2018-03-08 | 2018-09-07 | 京东方科技集团股份有限公司 | A kind of display panel and its manufacturing method |
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Application publication date: 20190419 |