CN106356471A - Curing method of OLED (Organic Light Emitting Diode) device cathode - Google Patents
Curing method of OLED (Organic Light Emitting Diode) device cathode Download PDFInfo
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- CN106356471A CN106356471A CN201610903930.7A CN201610903930A CN106356471A CN 106356471 A CN106356471 A CN 106356471A CN 201610903930 A CN201610903930 A CN 201610903930A CN 106356471 A CN106356471 A CN 106356471A
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- Prior art keywords
- heating
- oled device
- oled
- eddy
- electrocondution slurry
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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
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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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
Abstract
The invention discloses a curing method of an OLED (Organic Light Emitting Diode) device cathode. The method comprises the following steps: putting an OLED device into a vortex heating furnace and heating; enabling the cathode of the OLED device to be arranged toward an electromagnetic coil in the vortex heating furnace; setting working parameters of the vortex heating furnace; selecting a corresponding power output timing sequence to heat the cathode of the OLED device according to different metal grain materials in conductive slurry or according to process requirements; and in a heating process, generating a vortex effect through utilizing selective absorption of the metal grain materials in the conductive slurry on electromagnetic waves emitted by the electromagnetic coil, so as to realize self heating and sintering. According to the curing method provided by the invention, an electromagnetic induction vortex effect is used for replacing a traditional heat furnace to heat and an OLED organic functional layer can be prevented from being heated as much as possible; and performances of the OLED organic functional layer are not reduced, and curing of the cathode of the OLED device can be rapidly and efficiently realized in an energy-saving manner.
Description
Technical field
The present invention relates to the curing of Organic Light Emitting Diode (oled) is and in particular to a kind of utilize electromagnetic wave to oled
The curing that the negative electrode of device is heated.
Background technology
Organic Light Emitting Diode (oled) is mainly used in illumination and display, and its basic structure is as shown in Figure 1.Existing organic
The method that is typically prepared of light-emitting diodes tube cathode is on transparent ito substrate, is deposited with or printing oled organic layer material, Ran Houzheng
Plating or printed cathode material.At present, the curing of conventional Organic Light Emitting Diode negative electrode is: by electrocondution slurry (silver paste, copper
Slurry, carbon slurry, gold paste etc.) using scraper printing method, be coated on oled organic function layer, then whole device is put into plus
In hot stove, heating (80-200 degree Celsius) makes electrocondution slurry sinter for a period of time.This curing there is following shortcoming:
(1) oled device is overall all heated, and oled organic function layer performance is had an impact, so that oled organic function layer performance meeting
Reduce；(2) heating furnace heats up cooling slowly, often needs the heat time heating time of more than 10 minutes, affects production efficiency；(3) in heating furnace
Heat can only part be absorbed by oled device cathodes, efficiency low (can absorb heat in furnace wall).Therefore, it is necessary to provide a kind of new consolidating
Change method, to effectively improve device performance and the production efficiency of Organic Light Emitting Diode.
Content of the invention
For overcoming the problem of the deficiencies in the prior art and presence, the present invention provides a kind of solidification side of oled device cathodes
Method, using this curing, can effectively improve the device performance of oled device and the production efficiency effectively improving oled device.
The present invention is achieved by the following technical solutions: a kind of curing of oled device cathodes, described oled device
The negative electrode of part is printed on oled organic function layer using electrocondution slurry and is obtained, and has metallic particles in described electrocondution slurry, described
Method includes:
Described oled device is put in eddy heating for heating stove and is heated, and make the negative electrode of oled device towards in eddy heating for heating stove
The solenoid of setting；The running parameter of setting eddy heating for heating stove, according to different metal particle material in electrocondution slurry or root
Need to select corresponding power output sequential that the negative electrode of oled device is heated according to technique；Institute is utilized in heating process
The metallic particles stated in electrocondution slurry comes in fact to the selective absorbing generation eddy current effect of the electromagnetic wave that described solenoid sends
Existing self-heating sintering.
Preferably, described electrocondution slurry be filled-type electrocondution slurry, the metallic particles in this filled-type electrocondution slurry straight
Footpath is 0.2～1000um；Described metallic particles is gold grain, Argent grain or copper granule, and described metallic particles is Argent grain, this silver
A diameter of 8～12um of granule.
Preferably, during heating work, the output of eddy heating for heating stove incrementally increases described eddy heating for heating stove, when
Output then carries out constant power output with p after reaching default peak power output p, until heating terminates, described big output
Power p is 10～100w；Described eddy heating for heating stove during heating work, the frequency of the electromagnetic wave that described solenoid sends
For 1～100khz.
It is preferred that described eddy heating for heating stove includes shell, the solenoid being arranged at shell inner top and is arranged at outer
Shell inner bottom part, rotatable rotating disk；Described rotating disk is round turntable, and the material of this round turntable is plastics；Described oled
The distance between the negative electrode of device and described solenoid are 1～5cm.
The curing of the oled device cathodes that the present invention provides, it passes through to substitute biography with the heating of electromagnetic induction eddy current effect
The heating stove heat of system, using the metallic particles in electrocondution slurry the selective absorbing of frequency electromagnetic waves is produced eddy current effect Lai
Realize self-heating sintering, it can avoid oled organic function layer to be heated as far as possible, and oled organic function layer performance will not be made to reduce,
And can quickly (generally can complete within 5 minutes sinter), energy-efficient the solidification completing oled device cathodes.
Brief description
Fig. 1 is the basic structure schematic diagram of oled device in prior art；
Fig. 2 is structural representation when in the embodiment of the present invention being solidified the negative electrode of oled device in eddy heating for heating stove；
Fig. 3 is the power output sequential of oled device eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Figure；
Fig. 4 is another power output of oled device eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Sequential chart；
Fig. 5 is the another power output of oled device eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Sequential chart；
Fig. 6 is the structure schematic diagram of eddy heating for heating stove described in the embodiment of the present invention.
Specific embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments, the present invention is made further
Describe in detail.
A kind of curing of oled device cathodes, the negative electrode of described oled device is printed on oled using electrocondution slurry to be had
Machine functional layer is obtained, and has metallic particles, methods described includes in described electrocondution slurry: the negative electrode of oled device is being carried out admittedly
During change, described oled device is put in eddy heating for heating stove and is heated, and make the negative electrode of oled device towards eddy heating for heating stove
The solenoid of interior setting, is heated with the anode reducing oled device as far as possible, as shown in Figure 2；In eddy heating for heating stove pair
The running parameter of eddy heating for heating stove, before the negative electrode of oled device carries out heating work, is first set, according to different in electrocondution slurry
Metal particle material or need to select corresponding power output sequential that the negative electrode of oled device is heated according to technique；?
In heating process using the metallic particles in described electrocondution slurry the selective absorbing to the electromagnetic wave that described solenoid sends
Produce eddy current effect to realize self-heating sintering.Due to oled organic function layer will not electromagnetic wave absorption, the organic work(of therefore oled
Ergosphere will not be heated, so that during the negative electrode to oled device is heating and curing, will not be organic to oled
The performance of functional layer impacts, thus the performance of oled organic function layer will not be made to reduce, can effective guarantee oled device
Device performance.It should be noted that in heat curing process, need the negative electrode of oled device towards micro- in eddy heating for heating stove
Wave duct, to improve the efficiency of heating surface of negative electrode, to reduce the time needed for the heat-agglomerating of negative electrode, and reduces oled device as far as possible
Anode is heated, and prevents the performance of oled organic function layer is impacted.Further, since the efficiency of eddy current effect is very high,
In order to prevent crossing heating to oled device, before heating, need to preset peak power output p of eddy heating for heating stove, and
The time of heating.In the embodiment of the present invention, during heating work, described peak power output p is described eddy heating for heating stove
10～100w, the frequency of the electromagnetic wave that described solenoid sends is 1～100khz, exists the heat time heating time of described eddy heating for heating stove
In 5 minutes；And eddy heating for heating stove is during heating work, the output of eddy heating for heating stove is preferably made to incrementally increase, when defeated
Go out after power reaches default peak power output p, then constant power output heating carried out with peak power output p, until it reaches
After default heat time heating time, then stop heating work.
In the present embodiment, described eddy heating for heating stove includes shell, the solenoid being arranged at shell inner top and setting
In shell inner bottom part, rotatable rotating disk, (described rotating disk is preferably the round turntable of uniform rotation, and the rotating speed of round turntable is excellent
Elect the 1-10 that turns per minute as to enclose, be heated evenly with the negative electrode ensureing oled device), as shown in Figure 6.Implement as preferred
Example, the material of described round turntable is plastics, and shell is then non-metallic material (such as plastics, pottery etc.).In addition, described oled
The negative electrode of device is preferably 1～5cm with the distance between described solenoid l, if described excessive apart from l, can make electromagnetic wave
Leak, thus reducing the efficiency of eddy heating for heating stove.
In the present embodiment, described electrocondution slurry is filled-type electrocondution slurry, the metallic particles in this filled-type electrocondution slurry
Diameter can be 0.2～1000um, described metallic particles can be gold grain, Argent grain or copper granule.Preferably, described fill out
Fill type electrocondution slurry by metal dust (as bronze, argentum powder or copper powder), performed polymer, diluent, cross-linking agent, catalyst and other
Additive composition；Wherein, metal dust is main component therein, and the metallic particles in described electrocondution slurry derives from
Here metal dust.
The filled-type electrocondution slurry that the flake silver powder being about 8～12um using diameter below is made as main component is (below
Referred to as silver paste) as specific embodiment, the present invention is further illustrated: the silver paste made is printed on oled organic
Whole oled device, using the negative electrode as oled device, is then put into the round turntable in eddy heating for heating stove by one end of functional layer
On heated, and make one end of described negative electrode towards solenoid, then the running parameter of eddy heating for heating stove be set, select corresponding
Power output sequential the negative electrode of oled device is heated, power output sequential chart as shown in figures 3-5.In Fig. 3
In, represent that peak power output p of eddy heating for heating stove is 10w, the frequency of the electromagnetic wave that solenoid sends is 1khz, oled device
The solidification process of the negative electrode of part can complete about (300s) at 5 minutes；In the diagram, represent the maximum output of eddy heating for heating stove
Power p is 50w, and the frequency of the electromagnetic wave that solenoid sends is 2.5khz, and the solidification process of the negative electrode of oled device was at 3 minutes
(180s) can complete about；In Figure 5, peak power output p of expression eddy heating for heating stove is 100w, and solenoid sends
The frequency of electromagnetic wave is 10khz, and the solidification process of the negative electrode of oled device can complete about (120s) at 2 minutes.The present invention
In embodiment, it is preferred to use the running parameter shown in sequential chart in accompanying drawing 4 negative electrode of oled device is carried out with heating to have come
Become sintering.
The curing of oled device cathodes provided in an embodiment of the present invention, is replaced existing with the heating of electromagnetic induction eddy current effect
There is the hot stove heat in technology, compared with prior art, the method have the advantages that (1) main heating is to oled
The printed cathode layer of device, can avoid oled organic function layer to be heated as far as possible, and oled organic function layer performance will not be made to reduce；
(2) production efficiency is high, typically can complete to sinter within 5 minutes, and typically require more than 10 minutes in prior art；
(3) efficiency is high, and about more than 80% electric energy can be converted into the heat energy of the negative electrode of oled device to complete to sinter, and in prior art,
Heating furnace only has partial heat to be absorbed by the negative electrode of oled device, and remainder can be relatively low by fireplace or GAS ABSORPTION, efficiency.
Above-described embodiment is the preferably implementation of the present invention, is not limited to the present invention, without departing from this
On the premise of bright inventive concept, any obvious replacement is all within protection scope of the present invention.The replacement being clear to is equal
Within protection scope of the present invention.
Claims (9)
1. a kind of curing of oled device cathodes, it is organic that the negative electrode of described oled device is printed on oled using electrocondution slurry
Functional layer is obtained, and has metallic particles, methods described includes in described electrocondution slurry:
Described oled device is put in eddy heating for heating stove and is heated, and make the negative electrode of oled device towards in eddy heating for heating stove
The solenoid of setting；The running parameter of setting eddy heating for heating stove, according to different metal particle material in electrocondution slurry or root
Need to select corresponding power output sequential that the negative electrode of oled device is heated according to technique；Institute is utilized in heating process
The metallic particles stated in electrocondution slurry comes in fact to the selective absorbing generation eddy current effect of the electromagnetic wave that described solenoid sends
Existing self-heating sintering.
2. method according to claim 1 it is characterised in that: described electrocondution slurry be filled-type electrocondution slurry, this filling
A diameter of 0.2～1000um of the metallic particles in type electrocondution slurry.
3. method according to claim 2 it is characterised in that: described metallic particles is gold grain, Argent grain or copper granule.
4. method according to claim 2 it is characterised in that: described metallic particles be Argent grain, the diameter of this Argent grain
For 8～12um.
5. the method according to any one in Claims 1 to 4 it is characterised in that: described eddy heating for heating stove is in heater
During work, the output of eddy heating for heating stove incrementally increases, after output reaches default peak power output p then with
P carries out constant power output, until heating terminates, described big output p is 10～100w.
6. method according to claim 5 it is characterised in that: described eddy heating for heating stove is during heating work, described
The frequency of the electromagnetic wave that solenoid sends is 1～100khz.
7. method according to claim 5 it is characterised in that: described eddy heating for heating stove includes shell, is arranged inside the shell
The solenoid at top and be arranged at shell inner bottom part, rotatable rotating disk.
8. method according to claim 7 it is characterised in that: described rotating disk is round turntable, and the material of this round turntable
Matter is plastics.
9. method according to claim 8 it is characterised in that: between the negative electrode of described oled device and described solenoid
Distance be 1～5cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903930.7A CN106356471B (en) | 2016-10-17 | 2016-10-17 | A kind of curing of OLED negative electrode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610903930.7A CN106356471B (en) | 2016-10-17 | 2016-10-17 | A kind of curing of OLED negative electrode |
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| CN106356471B CN106356471B (en) | 2017-12-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393945A (en) * | 2017-07-31 | 2017-11-24 | 京东方科技集团股份有限公司 | A kind of organic light-emitting diode display substrate and preparation method thereof, display device |
| CN113471462A (en) * | 2021-06-22 | 2021-10-01 | 上海申风投资管理有限公司 | Method for curing graphite bipolar plate of fuel cell |
| WO2023142776A1 (en) * | 2022-01-26 | 2023-08-03 | Tcl科技集团股份有限公司 | Preparation method for photoelectric device, and photoelectric device and display apparatus |
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| CN104576692A (en) * | 2014-11-24 | 2015-04-29 | 深圳市华星光电技术有限公司 | Conductive flexible substrate, manufacturing method of conductive flexible substrate, OLED display device and manufacturing method of OLED (organic light emitting diode) display device |
| CN105280265A (en) * | 2015-06-25 | 2016-01-27 | 珠海罗西尼表业有限公司 | Solar cell electrode slurry, preparation method, cell electrode and solar cell |
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| CN101837951A (en) * | 2010-05-24 | 2010-09-22 | 山东大学 | Apparatus and method for graphically producing nano structures by way of electrode induction and microwave curing |
| CN102664055A (en) * | 2012-04-11 | 2012-09-12 | 深圳市大富科技股份有限公司 | Conductive silver paste, method for preparing same and surface metallization method for microwave dielectric ceramics |
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| CN113471462A (en) * | 2021-06-22 | 2021-10-01 | 上海申风投资管理有限公司 | Method for curing graphite bipolar plate of fuel cell |
| WO2023142776A1 (en) * | 2022-01-26 | 2023-08-03 | Tcl科技集团股份有限公司 | Preparation method for photoelectric device, and photoelectric device and display apparatus |
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Application publication date: 20170125 Assignee: Guangzhou Aosheng Technology Co.,Ltd. Assignor: DONGGUAN University OF TECHNOLOGY Contract record no.: X2023990000096 Denomination of invention: A Curing Method of OLED Cathode Granted publication date: 20171208 License type: Common License Record date: 20230112 |
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Application publication date: 20170125 Assignee: Dongguan Zongyou Technology Information Service Co.,Ltd. Assignor: DONGGUAN University OF TECHNOLOGY Contract record no.: X2023980035041 Denomination of invention: A Curing Method for Cathode of OLED Devices Granted publication date: 20171208 License type: Common License Record date: 20230424 |