CN110048031A - Processing method, oled panel preparation method and the oled panel of oled panel luminescent layer - Google Patents
Processing method, oled panel preparation method and the oled panel of oled panel luminescent layer Download PDFInfo
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- CN110048031A CN110048031A CN201910303065.6A CN201910303065A CN110048031A CN 110048031 A CN110048031 A CN 110048031A CN 201910303065 A CN201910303065 A CN 201910303065A CN 110048031 A CN110048031 A CN 110048031A
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- oled panel
- layer
- drive substrate
- poor solvent
- luminescent 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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The embodiment of the invention discloses a kind of processing method of oled panel luminescent layer, oled panel preparation method and oled panels.The processing method of the oled panel luminescent layer include: in drive substrate printing prepare hole injection layer, after hole transmission layer and luminescent layer, the step of luminous layer surface of drive substrate is rinsed using the poor solvent of emitting layer material.Oled panel shines layer surface after poor solvent rinses in the embodiment of the present invention, improve the interfacial characteristics of later period luminescent layer and electron transfer layer, interface is adulterated light emitting molecule content and is reduced, and facilitates that exciton is compound inside luminescent layer, reduces the probability that exciton is quenched in Interface composites.
Description
Technical field
The present invention relates to technical field of semiconductor, and in particular to a kind of processing method of oled panel luminescent layer,
Oled panel preparation method and oled panel.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is due to having high comparison, big view
It the advantages that angle, fast response time, frivolous flexibility, has been widely applied in panel display apparatus at present.Small size OLED at present
Product uses vacuum evaporation and fine mask platemaking technology, realizes that RGB (Red, Green, Blue) three color is shown, has tended to mature.
But large scale OLED product increases contraposition difficulty, leads to yield very since buckling deformation is serious after becoming large-sized for mask
It is low to be abandoned.Generally realize that large scale colour is shown by white light and colorized optical filtering chip technology at present.But vacuum evaporation is white
Gloss multilayered structure is faced with the disadvantages of equipment and complex process, energy consumption are high, waste of material is big, at high cost.Print OLED skill
After organic functional material is configured to ink by art, material is realized most by solution processing technologies such as silk-screen printing or ink jet printings
Big degree utilizes, and does not need fine metal mask, and cost can be effectively reduced, have in terms of preparing large scale oled panel
There is great advantage.
Printing OLED device structure is generally more organic layer structures at present, on the electrode successively printing preparation hole injection
Layer, hole transmission layer and organic luminous layer, due to the mode that organic material is solution coating, organic presence between layers is dissolved each other
Problem, in addition to will from the aspect of material such as cross-linked material design, the factors such as orthogonal solvents, the topography optimization of organic layer is current
Printing OLED prepares another significant difficulty faced.Film in homogeneous thickness is the key that influence OLED device performance and photochromic
Factor.And the factor for influencing film thickness uniformity is more complicated, such as the wetability of substrate, the viscosity of ink, surface tension, solvent is waved
Hair property, deposition and drying process of solute etc..So far still without the theoretical method of a unification and specific optimization film morphology.
On printing oled panel film forming processing procedure, it is generally divided into printing, it is dry, toast three steps, hole injection layer, hole transmission layer
And luminescent layer is repeated in above-mentioned steps, is then transferred to vacuum chamber, and electron transfer layer and cathode is deposited.However luminescent layer is
The mode of solution processing, there are interfacial film thickness ununiformity, exciton causes to swash interface is compound at the interface with vapor deposition electron transfer layer
The problems such as son is quenched.
Summary of the invention
The embodiment of the present invention provides the processing method, oled panel preparation method and the face OLED of a kind of oled panel luminescent layer
Plate, improves the interfacial characteristics of later period luminescent layer and electron transfer layer, and interface is adulterated light emitting molecule content and reduced, helps to swash
Son is compound inside luminescent layer, reduces the probability that exciton is quenched in Interface composites, improves OLED device luminous efficiency and longevity
Life.
To solve the above problems, in a first aspect, the application provides a kind of processing method of oled panel luminescent layer, it is described
The processing method of oled panel luminescent layer include: in drive substrate printing prepare hole injection layer, hole transmission layer and shine
Layer after, using emitting layer material poor solvent rinse drive substrate luminous layer surface the step of.
Further, the method also includes:
Using emitting layer material poor solvent to rinse drive substrate luminous layer surface after, by the driving base
Plate is transferred in annealing device and is made annealing treatment.
Further, the step of poor solvent using emitting layer material rinses the luminous layer surface of drive substrate,
Include:
Rotate drive substrate, drive substrate revolving speed is 500~5000r/s；
N is used in the environment of nitrogen2Clean luminous 10~30s of layer surface of drive substrate；
Luminous 20~150s of layer surface of drive substrate is rinsed using the poor solvent of emitting layer material again.
Further, the annealing time of the annealing is 5~30min.
Further, the poor solvent of the emitting layer material is alcohols, ethers or ketone.
Further, when the poor solvent of the emitting layer material is alcohols, the poor solvent of the emitting layer material is
Methanol, ethyl alcohol, isopropanol, n-hexyl alcohol, ethylene glycol or propylene glycol；
When the poor solvent of the emitting layer material is ethers, the poor solvent of the emitting layer material is methyl ether, ether,
Methyl phenyl ethers anisole or diethylene glycol monobutyl ether；
When the poor solvent of the emitting layer material is ketone, the poor solvent of the emitting layer material is acetone, butanone,
Cyclohexanone or acetophenone.
Second aspect, the application provide a kind of oled panel preparation method, and the oled panel preparation method includes:
Successively printing prepares hole injection layer, hole transmission layer and luminescent layer in drive substrate；
Printing prepares hole injection layer in drive substrate, after hole transmission layer and luminescent layer, using emitting layer material
Poor solvent rinse drive substrate luminous layer surface；
Using emitting layer material poor solvent to rinse drive substrate luminous layer surface after, by the driving base
Plate is transferred in annealing device and is made annealing treatment；
The drive substrate is transferred to vacuum chamber vapor deposition electron transfer layer and cathode.
Further, the printing prepares hole injection layer, and each printing of hole transmission layer and luminescent layer includes
Print processing is dried, and makes annealing treatment three steps, and the mode of the print processing is inkjet printing, the print processing
In air or N2It is carried out under environment.
Further, the drying process mode is dry for vacuum suction, and when vacuum suction is dry, vacuum pressure range is
0.00001~500mbar.
The third aspect, the application provide a kind of oled panel, and the oled panel is used as described in any in second aspect
Oled panel preparation method be prepared.
The processing method of oled panel luminescent layer includes: the printing preparation hole note in drive substrate in the embodiment of the present invention
Enter layer, after hole transmission layer and luminescent layer, the luminous layer surface of drive substrate is rinsed using the poor solvent of emitting layer material
The step of.Oled panel shines layer surface after poor solvent rinses in the embodiment of the present invention, improves later period luminescent layer and electricity
The interfacial characteristics of sub- transport layer, interface are adulterated light emitting molecule content and are reduced, and it is compound inside luminescent layer to facilitate exciton, reduce
The probability that exciton is quenched in Interface composites, improves OLED device luminous efficiency and service life.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is that the embodiment of the present invention provides a kind of one embodiment flow diagram of oled panel preparation method.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instruction such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include one or more feature.In the description of the present invention, " more
It is a " it is meant that two or more, unless otherwise specifically defined.
In this application, " exemplary " word is used to indicate " being used as example, illustration or explanation ".Described herein as
Any embodiment of " exemplary " is not necessarily to be construed as or more advantage more more preferable than other embodiments.In order to appoint this field
What technical staff can be realized and use the present invention, gives and is described below.In the following description, it arranges for purposes of explanation
Details is gone out.It should be appreciated that those skilled in the art will realize that the case where not using these specific details
Under the present invention also may be implemented.In other examples, well known structure and process will not be described in detail, to avoid need not
The details wanted makes description of the invention become obscure.Therefore, the present invention be not intended to be limited to shown in embodiment, but with meet
The widest scope of principle and feature disclosed in the present application is consistent.
The embodiment of the present invention provides the processing method, oled panel preparation method and the face OLED of a kind of oled panel luminescent layer
Plate is described in detail separately below.
Firstly, the embodiment of the present invention provides a kind of processing method of oled panel luminescent layer, the oled panel luminescent layer
Processing method include: in drive substrate printing prepare hole injection layer, after hole transmission layer and luminescent layer, using luminescent layer
The poor solvent of material rinses the step of luminous layer surface of drive substrate.
The processing method of oled panel luminescent layer can be one in oled panel preparation method in the embodiment of the present invention
Step, printing prepares hole injection layer in drive substrate, after hole transmission layer and luminescent layer, not using emitting layer material
The luminous layer surface of good solvent flushing drive substrate.Oled panel shines layer surface after poor solvent rinses, and improves the later period
The interfacial characteristics of luminescent layer and electron transfer layer, interface are adulterated light emitting molecule content and are reduced, and facilitate exciton in luminescent layer
Portion is compound, reduces the probability that exciton is quenched in Interface composites, improves OLED device luminous efficiency and service life.
In some embodiment of the invention, the processing method of the oled panel luminescent layer further include: using luminescent layer
The poor solvent of material to rinse drive substrate luminous layer surface after, by the drive substrate be transferred in annealing device into
Row annealing, specifically, the annealing refers to that drive substrate is placed in baking oven or thermal station after drying, default
At a temperature of heating remove residual solvent and carry out heat cross-linking process.The annealing time of the annealing is 5~30min.Separately
Outside, which is equal to or less than luminescent layer annealing temperature (the annealing temperature i.e. when drive substrate prints luminescent layer
Degree).
Further, the step of poor solvent using emitting layer material rinses the luminous layer surface of drive substrate,
It may include: to rotate drive substrate, drive substrate revolving speed is 500~5000r/s；N is used in the environment of nitrogen2Cleaning is driven
Luminous 10~30s of layer surface of dynamic substrate；The luminous layer surface of drive substrate is rinsed using the poor solvent of emitting layer material again
20~150s, it is preferred that the poor solvent of emitting layer material is used to rinse the luminescent layer surface washing time of drive substrate as 30
~180s.
Wherein, the poor solvent of the emitting layer material can be alcohols, ethers or ketone.In the specific implementation, described
When the poor solvent of emitting layer material is alcohols, the poor solvent of the emitting layer material can be methanol, ethyl alcohol, isopropanol,
N-hexyl alcohol, ethylene glycol or propylene glycol etc.；The poor solvent of the emitting layer material be ethers when, the emitting layer material it is bad
Solvent can be methyl ether, ether, methyl phenyl ethers anisole or diethylene glycol monobutyl ether etc.；When the poor solvent of the emitting layer material is ketone,
The poor solvent of the emitting layer material can be acetone, butanone, cyclohexanone or acetophenone.
The embodiment of oled panel preparation method in the embodiment of the present invention is described below.
As shown in Figure 1, for one embodiment flow diagram of oled panel preparation method in the embodiment of the present invention, it should
Oled panel preparation method includes:
101, successively printing prepares hole injection layer, hole transmission layer and luminescent layer in drive substrate.
Wherein, the printing prepares hole injection layer, and each printing of hole transmission layer and luminescent layer may include
Print processing is dried, and makes annealing treatment three steps, and the mode of the print processing is inkjet printing, the print processing
It can be in air or N2It is carried out under environment.In addition, the drying process mode is dry for vacuum suction, when vacuum suction is dry,
Vacuum pressure range is 0.00001~500mbar.Specifically, hole injection layer is made annealing treatment in air, hole transport
Layer and luminescent layer are in N2It is made annealing treatment under environment.
102, printing prepares hole injection layer in drive substrate, after hole transmission layer and luminescent layer, using luminescent layer
The poor solvent of material rinses the luminous layer surface of drive substrate.
Further, the step of poor solvent using emitting layer material rinses the luminous layer surface of drive substrate,
It may include: to rotate drive substrate, drive substrate revolving speed is 500~5000r/s；N is used in the environment of nitrogen2Cleaning is driven
Luminous 10~30s of layer surface of dynamic substrate；The luminous layer surface of drive substrate is rinsed using the poor solvent of emitting layer material again
20~150s, it is preferred that the poor solvent of emitting layer material is used to rinse the luminescent layer surface washing time of drive substrate as 30
~180s.
Wherein, the poor solvent of the emitting layer material can be alcohols, ethers or ketone.In the specific implementation, described
When the poor solvent of emitting layer material is alcohols, the poor solvent of the emitting layer material can be methanol, ethyl alcohol, isopropanol,
N-hexyl alcohol, ethylene glycol or propylene glycol etc.；The poor solvent of the emitting layer material be ethers when, the emitting layer material it is bad
Solvent can be methyl ether, ether, methyl phenyl ethers anisole or diethylene glycol monobutyl ether etc.；When the poor solvent of the emitting layer material is ketone,
The poor solvent of the emitting layer material can be acetone, butanone, cyclohexanone or acetophenone.
103, after the poor solvent of use emitting layer material is to the luminous layer surface of drive substrate is rinsed, by the drive
Dynamic substrate, which is transferred in annealing device, to be made annealing treatment.
Specifically, the annealing refers to that drive substrate is placed in baking oven or thermal station after drying, in default temperature
The lower heating of degree removes residual solvent and carries out the process of heat cross-linking.The annealing time of the annealing is 5~30min.In addition,
The annealing temperature is equal to or less than luminescent layer annealing temperature (annealing temperature i.e. when drive substrate prints luminescent layer).
104, the drive substrate is transferred to vacuum chamber vapor deposition electron transfer layer and cathode.
In the embodiment of the present invention during preparing oled panel, the luminous layer surface of oled panel is rinsed through poor solvent
Afterwards, the interfacial characteristics of later period luminescent layer and electron transfer layer are improved, interface is adulterated light emitting molecule content and reduced, helps to swash
Son is compound inside luminescent layer, reduces the probability that exciton is quenched in Interface composites, improves OLED device luminous efficiency and longevity
Life.
It should be noted that only describing above-mentioned steps, it is to be understood that remove in above-mentioned oled panel preparation method
It in oled panel preparation method of the embodiment of the present invention, can also as needed include any other except above-mentioned steps process
Steps necessary or process, this is not limited here.
In order to more preferably implement oled panel preparation method in the embodiment of the present invention, on oled panel preparation method basis
On, a kind of oled panel is also provided in the embodiment of the present invention, which uses any of the above-described OLED as described in the examples
Panel preparation method is prepared.
By using oled panel preparation method described in embodiment as above, shining for oled panel is further improved
Efficiency and service life.
In order to more preferably implement oled panel in the embodiment of the present invention, on oled panel basis, in the embodiment of the present invention
A kind of display device is also provided, which includes any of the above-described oled panel as described in the examples.
By using oled panel preparation method described in embodiment as above, shining for display device is further improved
Efficiency and service life.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the detailed description above with respect to other embodiments, details are not described herein again.
It is provided for the embodiments of the invention processing method, the oled panel preparation side of a kind of oled panel luminescent layer above
Method and oled panel are described in detail, and specific case used herein carries out the principle of the present invention and embodiment
It illustrates, the above description of the embodiment is only used to help understand the method for the present invention and its core ideas；Meanwhile for this field
Technical staff, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, to sum up institute
It states, the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of processing method of oled panel luminescent layer, which is characterized in that the processing method packet of the oled panel luminescent layer
Include: printing prepares hole injection layer in drive substrate, after hole transmission layer and luminescent layer, using the bad of emitting layer material
The step of luminous layer surface of solvent washing drive substrate.
2. the processing method of oled panel luminescent layer according to claim 1, which is characterized in that the method also includes:
Using emitting layer material poor solvent to rinse drive substrate luminous layer surface after, by the drive substrate turn
It moves in annealing device and is made annealing treatment.
3. the processing method of oled panel luminescent layer according to claim 2, which is characterized in that the annealing is moved back
The fiery time is 5~30min.
4. the processing method of oled panel luminescent layer according to claim 1, which is characterized in that described to use luminescent layer material
The poor solvent of material rinses the step of luminous layer surface of drive substrate, comprising:
Rotate drive substrate, drive substrate revolving speed is 500~5000r/s；
N is used in the environment of nitrogen2Clean luminous 10~30s of layer surface of drive substrate；
Luminous 20~150s of layer surface of drive substrate is rinsed using the poor solvent of emitting layer material again.
5. the processing method of oled panel luminescent layer according to claim 1, which is characterized in that the emitting layer material
Poor solvent is alcohols, ethers or ketone.
6. the processing method of oled panel luminescent layer according to claim 5, which is characterized in that the emitting layer material
When poor solvent is alcohols, the poor solvent of the emitting layer material is methanol, ethyl alcohol, isopropanol, n-hexyl alcohol, ethylene glycol or third
Glycol；
When the poor solvent of the emitting layer material is ethers, the poor solvent of the emitting layer material is methyl ether, ether, benzene first
Ether or diethylene glycol monobutyl ether；
When the poor solvent of the emitting layer material is ketone, the poor solvent of the emitting layer material is acetone, butanone, hexamethylene
Ketone or acetophenone.
7. a kind of oled panel preparation method, which is characterized in that the oled panel preparation method includes:
Successively printing prepares hole injection layer, hole transmission layer and luminescent layer in drive substrate；
Printing prepares hole injection layer in drive substrate, after hole transmission layer and luminescent layer, not using emitting layer material
The luminous layer surface of good solvent flushing drive substrate；
Using emitting layer material poor solvent to rinse drive substrate luminous layer surface after, by the drive substrate turn
It moves in annealing device and is made annealing treatment；
The drive substrate is transferred to vacuum chamber vapor deposition electron transfer layer and cathode.
8. oled panel preparation method according to claim 7, which is characterized in that the printing prepares hole injection layer,
Each printing of hole transmission layer and luminescent layer includes print processing, is dried, makes annealing treatment three steps, described to beat
The mode of print processing is inkjet printing, and the print processing is in air or N2It is carried out under environment.
9. oled panel preparation method according to claim 8, which is characterized in that the drying process mode is vacuum pumping
Gas is dry, and when vacuum suction is dry, vacuum pressure range is 0.00001~500mbar.
10. a kind of oled panel, which is characterized in that the oled panel is using the OLED as described in any in claim 7 to 9
Panel preparation method is prepared.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303065.6A CN110048031B (en) | 2019-04-16 | 2019-04-16 | OLED panel light-emitting layer processing method, OLED panel preparation method and OLED panel |
| PCT/CN2019/104424 WO2020211261A1 (en) | 2019-04-16 | 2019-09-04 | Oled panel light-emitting layer processing method, oled panel manufacturing method, and oled panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303065.6A CN110048031B (en) | 2019-04-16 | 2019-04-16 | OLED panel light-emitting layer processing method, OLED panel preparation method and OLED panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110048031A true CN110048031A (en) | 2019-07-23 |
| CN110048031B CN110048031B (en) | 2021-01-01 |
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ID=67277380
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910303065.6A Active CN110048031B (en) | 2019-04-16 | 2019-04-16 | OLED panel light-emitting layer processing method, OLED panel preparation method and OLED panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110048031B (en) |
| WO (1) | WO2020211261A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129361A (en) * | 2019-12-26 | 2020-05-08 | 深圳市华星光电半导体显示技术有限公司 | Display panel manufacturing method and display panel |
| WO2020211261A1 (en) * | 2019-04-16 | 2020-10-22 | 深圳市华星光电半导体显示技术有限公司 | Oled panel light-emitting layer processing method, oled panel manufacturing method, and oled panel |
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| CN102121570A (en) * | 2010-01-11 | 2011-07-13 | 张明德 | Self-luminous tube |
| CN105070849A (en) * | 2015-07-14 | 2015-11-18 | Tcl集团股份有限公司 | Light-emitting device with compactly arranged quantum dot light-emitting layer and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110048031B (en) * | 2019-04-16 | 2021-01-01 | 深圳市华星光电半导体显示技术有限公司 | OLED panel light-emitting layer processing method, OLED panel preparation method and OLED panel |
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2019
- 2019-04-16 CN CN201910303065.6A patent/CN110048031B/en active Active
- 2019-09-04 WO PCT/CN2019/104424 patent/WO2020211261A1/en active Application Filing
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| CN102121570A (en) * | 2010-01-11 | 2011-07-13 | 张明德 | Self-luminous tube |
| CN105070849A (en) * | 2015-07-14 | 2015-11-18 | Tcl集团股份有限公司 | Light-emitting device with compactly arranged quantum dot light-emitting layer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211261A1 (en) * | 2019-04-16 | 2020-10-22 | 深圳市华星光电半导体显示技术有限公司 | Oled panel light-emitting layer processing method, oled panel manufacturing method, and oled panel |
| CN111129361A (en) * | 2019-12-26 | 2020-05-08 | 深圳市华星光电半导体显示技术有限公司 | Display panel manufacturing method and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020211261A1 (en) | 2020-10-22 |
| CN110048031B (en) | 2021-01-01 |
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