CN2592383Y - Colour-ink and ink-jet temperature control device for organic electroluminescent device - Google Patents
Colour-ink and ink-jet temperature control device for organic electroluminescent device Download PDFInfo
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- CN2592383Y CN2592383Y CN 02287477 CN02287477U CN2592383Y CN 2592383 Y CN2592383 Y CN 2592383Y CN 02287477 CN02287477 CN 02287477 CN 02287477 U CN02287477 U CN 02287477U CN 2592383 Y CN2592383 Y CN 2592383Y
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- ink
- pedestal
- temperature control
- organic electroluminescent
- jet
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Abstract
The utility model provides a color-ink and ink-jet temperature control device for an organic electroluminescent device, which comprises an ink-jet chamber, an ink-jet head and a temperature regulating unit, wherein, the ink-jet chamber is provided with a containing space, the ink-jet chamber is communicated with and provided with an ink groove, a base seat is arranged in the containing space, the base seat is of a good heat conductor, and the base seat is used for positioning a base plate which has an organic electroluminescence device. The ink-jet head and the base seat are in correspondingly opposite arrangement, the ink-jet head is communicated with the ink groove, and the ink-jet head has multiple ink-jet holes, causing ink to be ejected toward the base seat direction. The temperature regulating unit and the base seat are in connecting arrangement, and the temperature regulating unit is provided with a heating and cooling source to regulate the temperature of the base seat.
Description
Technical field
The utility model relates to a kind of look China ink ink-jet temperature control equipment of organic electroluminescent element, particularly a kind of organic illuminating element that is used for, as organic electric exciting light-emitting diode (OrganicLight Emitting Diode, OLED) and macromolecule organic electric exciting light-emitting diode (PolymerLight Emitting Diode, PLED) look of panel China ink ink-jet temperature control equipment.
Background technology
Organic electric exciting light-emitting diode and macromolecule electric exciting light-emitting diode are one of popular at present plane Display Technique, but because the use problem of solvent, general organic electric exciting light-emitting diode uses the vacuum evaporation mode to carry out film forming, and the macromolecule electric exciting light-emitting diode uses rotation coating (spin-coating) mode to carry out film forming.Wherein, vacuum evaporation must be carried out complicated fabrication steps, and needs to use light shield or half tone, also need use developer (developer) and removing photoresistance agent organic solvents such as (stripper) simultaneously; In addition, the problem that the rotation coating method has waste liquid to produce, the cost of equipment cost is also high simultaneously.For these reasons, form the organic electric-excitation luminescent diode array with the direct spray printing of ink jet printing mode and just become one of present main flow processing procedure.
Ink jet printing directly forms an organic electric-excitation luminescent layer on transparent electrode layer, it reduces fabrication steps, need not use light shield or web plate, and then has reduced manufacturing time and cost.Simultaneously, need not utilize organic solvents such as developer and removing photoresistance agent, the environmental issue that also can reduce in the processing procedure to be produced.
In general ink jet printing processing procedure, a transparent electrode substrate is arranged on the pedestal, base interior has a heater, and in order to substrate is carried out roasting in advance (pre-bake) program, it is by means of the evaporation of heating, and then the solvent on the discharge substrate.Then, utilize an ink gun (comprising a plurality of nozzles) that ink is sprayed onto on the transparent electrode substrate again, in order to form the organic electric-excitation luminescent layer.
In the prior art processing procedure, following several shortcomings are arranged: the first, owing to be subjected to the influence of high temperature, when ink droplet was dripping on the substrate, the excessive velocities of solvent evaporates made that the liquid film moulding is too fast and inhomogeneous.The second, the ink droplet that is dropped in substrate makes the mobile high of ink droplet because removal of solvents is difficult for, and is being subjected under the influence that substrate moves, and ink droplet can produce mobile in picture element, and then has reduced the uniformity of ink droplet, more lowers the luminous efficiency of element.
Summary of the invention
From the above, the purpose of this utility model is to provide a kind of and avoids the liquid film moulding too fast, solves the look China ink ink-jet temperature control equipment that substrate moves problem and can remove the organic electroluminescent element of ink droplet solvent easily.
The utility model is to utilize look China ink ink-jet temperature controlling principle to solve above-mentioned problem.
For achieving the above object, the utility model provides a kind of look China ink ink-jet temperature control equipment of organic electroluminescent element, comprises an inkjet ink chamber, an ink gun and a thermostat unit.Wherein, inkjet ink chamber has an accommodation space, and inkjet ink chamber is communicated with and is provided with an ink container, is provided with a pedestal in the accommodation space, and pedestal is a good thermal conductor, and pedestal is for putting the substrate that an organic electroluminescent element is arranged; Ink gun is relative with pedestal and establish, and ink gun is communicated with ink container, and ink gun has most jet orifice, and ink can be sprayed towards the pedestal direction; Thermostat unit and pedestal are connected with, and provide a heating cooling source to regulate the temperature of pedestal.
The utility model provides a kind of look China ink ink-jet temperature control equipment of organic electroluminescent element, utilizes thermostat unit to regulate the temperature of pedestal, uses the flowability of change ink droplet and the homogeneity of film forming.Compared with prior art, following several advantages are arranged: the first, can utilize thermostat unit before the ink droplet contact substrate, to reduce the temperature of substrate, make that the contact angle between ink droplet and the substrate diminishes, and then make the formed film of ink droplet comparatively even.The second, after the ink droplet planarization that drops on the substrate, can utilize thermostat unit that base-plate temp is raise, make substrate heat up rapidly, allow solvent volatilize fast, reduce the flowability of ink droplet, and then increase the homogeneity of film forming, also increase the luminous efficiency of element.Three, have a plurality of keepers on the pedestal, can be with substrate orientation in certain position, and then reduce the situation that displacement substrate takes place, also reduce the problem that ink droplet flows simultaneously in picture element.
Description of drawings
Fig. 1 is the schematic perspective view of the look China ink ink-jet temperature control equipment of organic electroluminescent element in the present embodiment;
Fig. 2 is the schematic perspective view that the look China ink ink-jet temperature control equipment of organic electroluminescent element in the present embodiment is implemented;
Fig. 3 A is the schematic diagram of ink droplet and substrate among another embodiment; And
Fig. 3 B is the schematic diagram of ink droplet and substrate among another embodiment.
Symbol description among the figure
1 look China ink ink-jet temperature control equipment
11 inkjet ink chamber
111 pedestals
1111 keepers
1112 combs
12 ink guns
121 jet orifice
13 thermostat units
131 heating coolers
132 temperature controllers
14 vacuum unit
2 substrates
3 ink droplets
The specific embodiment
Hereinafter with reference to relevant drawings, the look China ink ink-jet temperature control equipment according to a kind of organic electroluminescent element of the utility model embodiment is described.
As shown in Figure 1, the utility model provides a kind of look China ink ink-jet temperature control equipment 1 of organic electroluminescent element, and look China ink ink-jet temperature control equipment 1 comprises an inkjet ink chamber 11, an ink gun 12 and a thermostat unit 13.Wherein, inkjet ink chamber 11 has an accommodation space, and inkjet ink chamber 11 is communicated with and is provided with an ink container (not being shown among the figure), is provided with a pedestal 111 in the accommodation space, pedestal 111 is a good thermal conductor, and pedestal 111 is provided with a substrate 2 (being shown in Fig. 2) of putting an organic electroluminescent element; Ink gun 12 and pedestal 111 are relative and establish, and ink gun 12 is communicated with ink container (not being shown among the figure), and ink gun 12 has most jet orifice 121, and ink can be sprayed towards pedestal 111 directions; Thermostat unit 13 is connected with pedestal 111, and provides a heating cooling source to regulate the temperature of pedestal 111.
In present embodiment, have a plurality of keepers 1111 on the surface of pedestal 111, these keepers 1111 are positioned substrate 2 (being shown in Fig. 2) on the pedestal 111, to reduce the possibility of substrate 2 (being shown in Fig. 2) displacement.Wherein, these keepers 1111 are inhaled the hole for vacuum.
Please refer to Fig. 1 again, present embodiment more comprises a vacuum unit 14, inhales the hole with this equal vacuum and is communicated with, and so that the air in the pedestal 111 is extracted out, makes a plurality of vacuum suctions hole of pedestal 111 have suction.
In addition, as shown in Figure 2, substrate 2 is an electrode base board.Wherein, this electrode base board is a tin indium oxide (ITO) substrate or an aluminum zinc oxide (AZO) substrate.Certainly, electrode base board also can be the substrate that a surface is formed with metal.
The ink gun 12 of present embodiment has most jet orifice 121, and ink gun 12 is with the direction ejection of ink towards pedestal 111, be used to form an organic electric-excitation luminescent layer on the substrate 2, as electron injecting layer, electron transfer layer, organic luminous layer, electric hole transport layer and electric hole implanted layer etc.
The size of ink gun 12 and jet orifice 121 thereof and its shape are along with the character of the pattern magnitude of required printing and the luminescent material loaded, and be different as solution viscosity, granular size etc.Employed alignment so also changes along with the required precision of luminous pattern, and for example: it aims at precision more than 5 microns mechanical registeration, and its aligning precision of optical alignment is more than 1 micron.
Moreover thermostat unit 13 is connected with pedestal 111, and provides a heating cooling source to regulate the temperature of pedestal 111.In present embodiment, the adjustment temperature range of thermostat unit 13 is about-20 ℃ to 200 ℃.Certainly, the adjustment temperature range of thermostat unit 13 also can be with the need and appropriate change.Simultaneously, can also control the humidity in the inkjet ink chamber 11 separately, make inkjet ink chamber 11 can not produce the dewfall of aqueous vapor.
At this, thermostat unit 13 comprises a heating cooler 131 and a temperature controller 132.Owing to be provided with at least one comb 1112 in the middle of the pedestal 111, heating cooler 131 carries a fluid in comb 1112, in order to change the temperature of pedestal 111.For example: fluid can be a water, and heating cooler 131 can utilize the water of carrying different temperatures in comb 1112, regulates the temperature of pedestal 111; In addition, heating cooler 131 can also be a heater coil, and it converts electric energy to the form of heat, so that the rising of temperature is provided.
In addition, temperature controller 132 is a thermocouple (thermal couple).Thermocouple, has disturbed external noise and has eliminated when two groups of data are carried out differential operational with differential voltmeter temperature indicating degree, and therefore stability is better than other temperature sensor (as resistance thermometer or thermistor).Certainly, temperature controller 132 can also replace by other temperature sensor.
In the utility model, with the pedestal cooling, so that the temperature of substrate 2 is lower than predetermined temperature.At this, predetermined temperature is room temperature (being about 25 ℃).Because solvent evaporation rate at room temperature is exceedingly fast in the ink droplet 3,, in the time of can making ink droplet 3 on dripping to substrate 2, reduce the speed of solvent evaporates, so that ink droplet 3 formed films are more smooth so before ink droplet 3 drips to substrate 2, earlier substrate 2 is lowered the temperature (＜25 ℃).
For example, weight concentration be poly (3,4)-ethylendioxythiophene (PEDOT) of 3wt% when temperature is 18 ℃, its contact angle is 7.51 °; When temperature was 28 ℃, its contact angle was 9.22 °; When temperature was 36 ℃, its contact angle was 11.86 °.By above-mentioned data as can be known, when temperature was high more, the contact angle between substrate 2 and the ink droplet 3 was big more; Otherwise the contact angle between substrate 2 and the ink droplet 3 is more little.
As shown in Figure 3A, when the temperature of substrate 2 was higher than room temperature, ink droplet 3 was bigger with the contact angle θ of substrate 2, makes that ink droplet 3 formed films are more inhomogeneous; In addition, shown in Fig. 3 B, when the temperature of substrate 2 was lower than room temperature, ink droplet 3 was less with the contact angle θ of substrate 2, makes that ink droplet 3 formed films are comparatively even.At this, the relation of the temperature of substrate 2 and contact angle θ is relevant with the material of ink droplet 3.
The look China ink ink-jet temperature control equipment of organic electroluminescent element of the present utility model has thermostat unit, and it uses the change flowability of ink droplet on substrate and the homogeneity of film forming in order to regulate the temperature of pedestal.Compared with prior art, before the ink droplet contact substrate, utilize thermostat unit to reduce the temperature of substrate, when making ink droplet on dripping to substrate, the contact angle between ink droplet and the substrate diminishes, and then improves the uniformity of ink droplet film forming.In addition, after the ink droplet planarization that drops on the substrate, can utilize thermostat unit that base-plate temp is raise, substrate is heated up rapidly, allow solvent volatilize fast simultaneously, reduce the flowability of ink droplet, and then increase the homogeneity of film forming, also can increase the luminous efficiency of element.Moreover, have a plurality of keepers on the pedestal, can to reduce the situation that displacement substrate takes place, reduce the situation that ink droplet flows in picture element with substrate orientation in certain position.
Above-mentioned is specific embodiment only, and is not to be restricted person.Anyly do not break away from spirit of the present utility model and category, and, all should be contained in the utility model claim institute restricted portion its equivalent modifications of carrying out or change.
Claims (9)
1. the look of organic electroluminescent element China ink ink-jet temperature control equipment is characterized in that, this look China ink ink-jet temperature control equipment comprises:
One inkjet ink chamber (chamber), this inkjet ink chamber has an accommodation space, and this inkjet ink chamber is communicated with and is provided with an ink container, is provided with a pedestal in this accommodation space, this pedestal is a good thermal conductor, and this pedestal is for putting the substrate (substrate) that an organic electroluminescent element is arranged;
One ink gun, relative with this pedestal and establish, this ink gun is communicated with this ink container, and this ink gun has most jet orifice, can be with ink towards this pedestal direction ejection; And
One thermostat unit is connected with this pedestal, and provides a heating cooling source to regulate the temperature of this pedestal.
2. the look of organic electroluminescent element as claimed in claim 1 China ink ink-jet temperature control equipment is characterized in that,
Have a plurality of keepers on the surface of this pedestal, these keepers with this substrate orientation on this pedestal.
3. the look of organic electroluminescent element as claimed in claim 2 China ink ink-jet temperature control equipment is characterized in that, these keepers are that a plurality of vacuum are inhaled the hole.
4. the look of organic electroluminescent element as claimed in claim 3 China ink ink-jet temperature control equipment, it is characterized in that, more comprise a vacuum unit, this vacuum unit is inhaled the hole with this equal vacuum and is communicated with, so that the air in this pedestal is extracted out, make this equal vacuum suction hole of this pedestal have suction.
5. the look of organic electroluminescent element as claimed in claim 1 China ink ink-jet temperature control equipment, it is characterized in that, this thermostat unit comprises a heating cooler and a temperature controller, and be provided with at least one comb in the middle of this pedestal, this heating cooler carries a fluid in this comb, in order to change the temperature of this pedestal.
6. the look of organic electroluminescent element as claimed in claim 1 China ink ink-jet temperature control equipment is characterized in that this substrate is an electrode base board.
7. the look of organic electroluminescent element as claimed in claim 6 China ink ink-jet temperature control equipment is characterized in that, this electrode base board be selected from tin indium oxide substrate and aluminum zinc oxide substrate at least one of them.
8. the look of organic electroluminescent element as claimed in claim 1 China ink ink-jet temperature control equipment is characterized in that, the adjustment temperature range of this thermostat unit is-20 ℃ to 200 ℃ approximately.
9. the look of organic electroluminescent element as claimed in claim 1 China ink ink-jet temperature control equipment, it is characterized in that, this ink gun is used to form an organic electric-excitation luminescent layer on this substrate, and this organic electric-excitation luminescent layer comprises an electron injecting layer, an electric hole implanted layer and an organic luminous layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287477 CN2592383Y (en) | 2002-12-09 | 2002-12-09 | Colour-ink and ink-jet temperature control device for organic electroluminescent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02287477 CN2592383Y (en) | 2002-12-09 | 2002-12-09 | Colour-ink and ink-jet temperature control device for organic electroluminescent device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2592383Y true CN2592383Y (en) | 2003-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02287477 Expired - Fee Related CN2592383Y (en) | 2002-12-09 | 2002-12-09 | Colour-ink and ink-jet temperature control device for organic electroluminescent device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2592383Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445874C (en) * | 2006-02-15 | 2008-12-24 | 虹创科技股份有限公司 | Thin film pattern layer producing method |
| US7591517B2 (en) | 2005-12-29 | 2009-09-22 | Industrial Technology Research Institute | Micro-droplet injection apparatus and injecting process using the same |
-
2002
- 2002-12-09 CN CN 02287477 patent/CN2592383Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7591517B2 (en) | 2005-12-29 | 2009-09-22 | Industrial Technology Research Institute | Micro-droplet injection apparatus and injecting process using the same |
| CN100445874C (en) * | 2006-02-15 | 2008-12-24 | 虹创科技股份有限公司 | Thin film pattern layer producing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |