CN106356471B - A kind of curing of OLED negative electrode - Google Patents
A kind of curing of OLED negative electrode Download PDFInfo
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- CN106356471B CN106356471B CN201610903930.7A CN201610903930A CN106356471B CN 106356471 B CN106356471 B CN 106356471B CN 201610903930 A CN201610903930 A CN 201610903930A CN 106356471 B CN106356471 B CN 106356471B
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- heating
- oled
- negative electrode
- 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 kind of curing of OLED negative electrode, methods described includes：The OLED is put into eddy heating for heating stove and heated, and makes the negative electrode of OLED towards the magnet coil set in eddy heating for heating stove；The running parameter of eddy heating for heating stove is set, needs to select corresponding power output sequential to heat the negative electrode of OLED according to metal particle material different in electrocondution slurry or according to technique；The selective absorbing of the electromagnetic wave sent in heating process using the metallic particles in the electrocondution slurry to the magnet coil produces eddy current effect to realize that self-heating sinters.The present invention substitutes traditional hot stove by using the heating of electromagnetic induction eddy current effect and heated, and as far as possible OLED organic function layers can be avoided to be heated, OLED organic function layers performance will not be made to reduce, and can complete the solidification of OLED negative electrode quick, energy-efficiently.
Description
Technical field
The present invention relates to Organic Light Emitting Diode（OLED）Curing, and in particular to one kind using electromagnetic wave to OLED
The curing that the negative electrode of device is heated.
Background technology
Organic Light Emitting Diode（OLED）It is mainly used in illumination and display, its basic structure is as shown in Figure 1.It is existing organic
The method that is typically prepared of light-emitting diodes tube cathode is on transparent ito substrate, is deposited or prints OLED organic layer materials, 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.）The method printed using scraper, is coated on OLED organic function layers, is then put into whole device and is added
Heated in hot stove（80-200 degrees Celsius）A period of time sinters electrocondution slurry.This curing there is following shortcoming：
（1）OLED is overall to be all heated, and is had an impact to OLED organic function layer performances, so that OLED organic function layer performance meetings
Reduce；（2）Heating furnace heating cooling is slow, often needs the heat time of more than 10 minutes, influences production efficiency；（3）In heating furnace
Heat can only part be absorbed by OLED negative electrode, efficiency is low（Furnace wall can absorb heat）.Therefore, it is necessary to provide a kind of new consolidate
Change method, to effectively improve the device performance of Organic Light Emitting Diode and production efficiency.
The content of the invention
For overcome the deficiencies in the prior art and the problem of exist, the present invention provides a kind of solidification side of OLED negative electrode
Method, using the curing, the device performance of OLED can be effectively improved and effectively improve the production efficiency of OLED.
The present invention is achieved by the following technical solutions：A kind of curing of OLED negative electrode, the OLED devices
The negative electrode of part is printed on OLED organic function layers using electrocondution slurry and is made, and has metallic particles in the electrocondution slurry, described
Method includes：
The OLED is put into eddy heating for heating stove and heated, and makes the negative electrode of OLED towards eddy heating for heating
The magnet coil set in stove；The running parameter of eddy heating for heating stove is set, according to metal particle material different in electrocondution slurry
Or needed to select corresponding power output sequential to heat the negative electrode of OLED according to technique；It is sharp in heating process
The selective absorbing of the electromagnetic wave sent with the metallic particles in the electrocondution slurry to the magnet coil produces eddy current effect
To realize that self-heating sinters.
Preferably, the electrocondution slurry is filled-type electrocondution slurry, the metallic particles in the filled-type electrocondution slurry it is straight
Footpath is 0.2~1000um；The metallic particles is gold grain, Argent grain or copper particle, and the metallic particles is Argent grain, the silver
A diameter of 8~12um of particle.
Preferably, during heating work, the power output of eddy heating for heating stove incrementally increases the eddy heating for heating stove, when
Power output then carries out constant power output after reaching default peak power output P with P, until heating terminates, the big output
Power P is 10~100W；The eddy heating for heating stove is during heating work, the frequency for the electromagnetic wave that the magnet coil is sent
For 1~100kHz.
It is preferred that the eddy heating for heating stove includes shell, is arranged at the magnet coil of shell inner top and is arranged at outer
Shell inner bottom part, rotatable rotating disk；The rotating disk is round turntable, and the material of the round turntable is plastics；The OLED
The distance between the negative electrode of device and the magnet coil are 1~5cm.
The curing of OLED negative electrode provided by the invention, it heats to substitute by using electromagnetic induction eddy current effect and passed
The heating stove heat of system, the selective absorbings of frequency electromagnetic waves is produced using the metallic particles in electrocondution slurry eddy current effect come
Realize that self-heating sinters, it can avoid OLED organic function layers from being heated as far as possible, and OLED organic function layers performance will not be made to reduce,
And can be quick（Generally it can complete to sinter within 5 minutes）, energy-efficient the solidification for completing OLED negative electrode.
Brief description of the drawings
Fig. 1 is the basic structure schematic diagram of OLED in the prior art；
Fig. 2 is the structural representation when negative electrode of OLED is solidified in eddy heating for heating stove in the embodiment of the present invention
Figure；
Fig. 3 is the power output of OLED eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Timing diagram；
Fig. 4 is another power of OLED eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Output timing diagram；
Fig. 5 is the another power of OLED eddy heating for heating stove when eddy heating for heating stove heat solidifies in the embodiment of the present invention
Output timing diagram；
Fig. 6 is the structure schematic diagram of eddy heating for heating stove described in the embodiment of the present invention.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made below in conjunction with the drawings and specific embodiments further
It is described in detail.
A kind of curing of OLED negative electrode, the negative electrode of the OLED is printed on OLED using electrocondution slurry to be had
Machine functional layer is made, and has metallic particles in the electrocondution slurry, and methods described includes：Consolidated by the negative electrode of OLED
During change, the OLED is put into eddy heating for heating stove and heated, and make the negative electrode of OLED towards eddy heating for heating stove
The magnet coil of interior setting, it is heated with reducing the anode of OLED as far as possible, as shown in Figure 2；In eddy heating for heating stove pair
Before the negative electrode of OLED carries out heating work, the running parameter of eddy heating for heating stove is first set, according to different in electrocondution slurry
Metal particle material needs to select corresponding power output sequential to heat the negative electrode of OLED according to technique；
The selective absorbing of the electromagnetic wave sent in heating process using the metallic particles in the electrocondution slurry to the magnet coil
Eddy current effect is produced to realize that self-heating sinters.Due to OLED organic function layers will not electromagnetic wave absorption, therefore the organic work(of OLED
Ergosphere will not be heated, so that during being heating and curing to the negative electrode of OLED, will not be organic to OLED
The performance of functional layer impacts, thus will not reduce the performance of OLED organic function layers, can effective guarantee OLED
Device performance.It should be noted that, it is necessary to by the negative electrode of OLED towards micro- in eddy heating for heating stove in heat curing process
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 OLED is reduced as far as possible
Anode is heated, and prevents from impacting the performance of OLED organic function layers.Further, since the efficiency of eddy current effect is very high,
In order to prevent that heating is crossed to OLED, before heating, it is necessary to preset the 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, the peak power output P is the eddy heating for heating stove
10~100W, the frequency for the electromagnetic wave that the magnet coil is sent is 1~100kHz, and the heat time of the eddy heating for heating stove exists
In 5 minutes；And eddy heating for heating stove preferably incrementally increases the power output of eddy heating for heating stove, when defeated during heating work
Go out after power reaches default peak power output P, then constant power output heating is carried out with peak power output P, until reaching
After the default heat time, then stop heating work.
In the present embodiment, the eddy heating for heating stove includes shell, the magnet coil for being arranged at shell inner top and setting
In shell inner bottom part, rotatable rotating disk（The rotating disk is preferably the round turntable of uniform rotation, and the rotating speed of round turntable is excellent
Elect the 1-10 per minute that turns as to enclose, to ensure that the negative electrode of OLED is heated evenly）, as shown in Figure 6.Implement as preferable
Example, the material of the round turntable is plastics, and shell is then non-metallic material（Such as plastics, ceramics etc.）.In addition, the OLED
The distance between the negative electrode of device and the magnet coil L are preferably 1~5cm, if the distance L is excessive, can make electromagnetic wave
Leak, so as to reduce the efficiency of eddy heating for heating stove.
In the present embodiment, the electrocondution slurry is filled-type electrocondution slurry, the metallic particles in the filled-type electrocondution slurry
Diameter can be 0.2~1000um, the metallic particles can be gold grain, Argent grain or copper particle.Preferably, it is described to fill out
Type electrocondution slurry is filled by metal dust（Such as bronze, silver powder or copper powder）, performed polymer, diluent, crosslinking agent, catalyst and other
Additive composition；Wherein, metal dust is main component therein, the metallic particles in the electrocondution slurry, that is, is derived from
Here metal dust.
It is about below filled-type electrocondution slurry made of 8~12um flake silver powder as main component using diameter（Below
Referred to as silver paste）As specific embodiment, the present invention is further illustrated：It is organic that the silver paste made is printed on OLED
Then whole OLED is put into the round turntable in eddy heating for heating stove by one end of functional layer using the negative electrode as OLED
On heated, and make one end of the negative electrode towards magnet coil, then the running parameter of eddy heating for heating stove is set, selection is corresponding
Power output sequential the negative electrode of OLED is heated, power output timing diagram as shown in figures 3-5.In Fig. 3
In, the peak power output P for representing eddy heating for heating stove is 10W, and the frequency of the electromagnetic wave that magnet coil is sent is 1kHz, OLED devices
The solidification process of the negative electrode of part was at 5 minutes（300s）Left and right can complete；In Fig. 4, the maximum output of eddy heating for heating stove is represented
Power P is 50W, and the frequency for the electromagnetic wave that magnet coil is sent is 2.5kHz, and the solidification process of the negative electrode of OLED was at 3 minutes
（180s）Left and right can complete；In Figure 5, the peak power output P for representing eddy heating for heating stove is 100W, what magnet coil was sent
The frequency of electromagnetic wave is 10kHz, and the solidification process of the negative electrode of OLED was at 2 minutes（120s）Left and right can complete.The present invention
In embodiment, it is preferred to use the running parameter shown in timing diagram in accompanying drawing 4 is heated to the negative electrode of OLED
Into sintering.
The curing of OLED negative electrode provided in an embodiment of the present invention, it is existing with the heating substitution of electromagnetic induction eddy current effect
There is the hot stove heating in technology, compared with prior art, the invention has the advantages that：（1）Main heating is to OLED
The printed cathode layer of device, as far as possible OLED organic function layers can be avoided to be heated, OLED organic function layers performance will not be made to reduce；
（2）Production efficiency is high, be able to can typically complete to sinter within 5 minutes, and usually requires more than 10 minutes in the 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 to complete to sinter, and in the prior art,
Heating furnace only has partial heat to be absorbed by the negative electrode of OLED, and remainder can be absorbed by fireplace or gas, and efficiency is relatively low.
Above-described embodiment is the preferable implementation of the present invention, is not limited to the present invention, is not departing from this hair
It is any obviously to replace within protection scope of the present invention on the premise of bright inventive concept.The replacement being clear to is equal
Within protection scope of the present invention.
Claims (7)
1. a kind of curing of OLED negative electrode, it is organic that the negative electrode of the OLED using electrocondution slurry is printed on OLED
Functional layer is made, and has metallic particles in the electrocondution slurry, and methods described includes：
The OLED is put into eddy heating for heating stove and heated, and makes the negative electrode of OLED towards in eddy heating for heating stove
The magnet coil of setting；The running parameter of eddy heating for heating stove is set, according to metal particle material or root different in electrocondution slurry
Need to select corresponding power output sequential to heat the negative electrode of OLED according to technique；Institute is utilized in heating process
The selective absorbing generation eddy current effect for stating the electromagnetic wave that the metallic particles in electrocondution slurry is sent to the magnet coil is come in fact
Existing self-heating sintering；
During heating work, the power output of eddy heating for heating stove incrementally increases the eddy heating for heating stove, when power output reaches
Constant power output is then carried out with P after to default peak power output P, until heating terminates, the peak power output P is 10
~100W；
The eddy heating for heating stove include shell, be arranged at the magnet coil of shell inner top and be arranged at shell inner bottom part,
Rotatable rotating disk.
2. according to the method for claim 1, it is characterised in that：The electrocondution slurry is filled-type electrocondution slurry, the filling
A diameter of 0.2~1000um of metallic particles in type electrocondution slurry.
3. according to the method for claim 2, it is characterised in that：The metallic particles is gold grain, Argent grain or copper particle.
4. according to the method for claim 2, it is characterised in that：The metallic particles is Argent grain, the diameter of the Argent grain
For 8~12um.
5. according to the method for claim 1, it is characterised in that：The eddy heating for heating stove is described during heating work
The frequency for the electromagnetic wave that magnet coil is sent is 1~100kHz.
6. according to the method for claim 1, it is characterised in that：The rotating disk is round turntable, and the material of the round turntable
Matter is plastics.
7. according to the method for claim 6, it is characterised in that：Between the negative electrode of the OLED and the magnet coil
Distance be 1~5cm.
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| 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 |
| CN116615050A (en) * | 2022-01-26 | 2023-08-18 | Tcl科技集团股份有限公司 | Preparation method of photoelectric device, photoelectric device and display device |
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| CN102664055B (en) * | 2012-04-11 | 2014-06-04 | 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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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 |
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