CN110271288A - OLED ink jet printing head and its printing equipment - Google Patents
OLED ink jet printing head and its printing equipment Download PDFInfo
- Publication number
- CN110271288A CN110271288A CN201910602024.7A CN201910602024A CN110271288A CN 110271288 A CN110271288 A CN 110271288A CN 201910602024 A CN201910602024 A CN 201910602024A CN 110271288 A CN110271288 A CN 110271288A
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- CN
- China
- Prior art keywords
- ink
- oled
- jet printing
- ink jet
- printing head
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention proposes a kind of Organic Light Emitting Diode ink jet printing heads, comprising: inking chamber, to store ink；Ink supply entrance, to transmit ink into the inking chamber；Piezo-electric crystal is connected to the inking chamber, to generate vibration, deformation to squeeze the inking chamber；Spray orifice, to form ink droplet, comprising: conductive structure is electrically connected to Organic Light Emitting Diode ink jet printing head.The conductive structure includes that conductive body is set to piezoelectric crystal surface and conductive lead wire is connected to the conductive body and ground terminal.By the piezo-electric crystal, the conductive structure and the ground terminal, the electrostatic charge generated in print procedure is eliminated.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of Organic Light Emitting Diode (organic light-
Emitting diode, OLED) ink jet printing head and its printing equipment.
Background technique
Organic Light Emitting Diode (organic light-emitting diode, OLED) is a kind of autonomous luminescent device,
OLED device is applied to field of display technology.With the liquid crystal display (liquid crystal display, LCD) passively to shine
It compares, has many advantages, such as that fast response time, contrast are high, visual angle is wide and easy to accomplish soft from the OLED display of main light emission
Property is shown.Therefore OLED display very likely becomes the main product of next-generation display technology.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram of existing OLED ink jet printing head.The OLED inkjet printing spray
There is head the ink of organic material to enter inking chamber 20 from the ink supply entrance 30 of spray head 100.In piezoelectric ink jet printing processing procedure,
Piezoelectric ink jet principle is squeezed by 50 high-speed motion of piezo-electric crystal of spray head 100, is deformed, and subtracts 20 volume of inking chamber
It is few, it squeezes ink and micro ink is made to be extruded into ink droplet 40 from the spray orifice 10 of spray head, and drop is allow smoothly to drip and return
Contracting.The production of functional layer in OLED device forms the property of the organic material of functional layer through in OLED inkjet printing production process
It can excellent be the deciding factor of the final luminescent properties of display panel.The factor of functional layer performance is influenced in addition to water oxygen, fire-bar
Other than part, in addition, in piezo-electric crystal high speed up and down deformation process, since corona discharge causes to generate electrostatic, electrostatic effect band
Some charges make oxygen remaining in ink become ozone, and organic material in ink is caused easily to damage with ozone contact position,
Cause OLED device efficiency, service life not high.
Therefore, the generation of electrostatic how is prevented to avoid ozone is generated, to prevent functional layer organic material impaired, is promoted
OLED device performance and service life, when being mass production, the technical issues that need to address.
Summary of the invention
To solve in OLED (organic light-emitting diode, OLED) inkjet printing processing procedure, ink material
By ozone layer destroying, the invention proposes a kind of OLED ink jet printing heads, to prevent ozone, avoid damage to function tunic
OLED device luminous efficiency is improved in face.The OLED ink jet printing head, comprising: inking chamber, to store ink；Ink supply enters
Mouthful, to transmit ink into the inking chamber；Piezo-electric crystal is connected to the inking chamber, to generate vibration, deformation to
Squeeze the inking chamber；Spray orifice, to form ink droplet；It is characterized by further comprising: conductive structure is electrically connected to the OLED
Ink jet printing head, wherein the conductive structure includes that conductive body is set to piezoelectric crystal surface；And conductive lead wire, even
It is connected to the conductive body and ground terminal；Wherein, it by the piezo-electric crystal, the conductive structure and the ground terminal, eliminates
The electrostatic charge generated in print procedure.
In one of them embodiment of the present invention, which is characterized in that the conductive body is metal material.
In one of them embodiment of the present invention, which is characterized in that the conductive body is embedded in the piezoelectric crystal surface.
In one of them embodiment of the present invention, which is characterized in that further include colloid, the conductive body passes through the colloid
Conform to the piezo-electric crystal.
In one of them embodiment of the present invention, which is characterized in that the colloid is conducting resinl, and the conducting resinl includes conduction
Filler, the conductive filler are selected from gold, silver, copper, aluminium, zinc, iron, the powder of nickel, graphite or some conductive compounds.
In one of them embodiment of the present invention, which is characterized in that the conductive body is made of multiple laminated structures, institute
Laminated structure is stated to conform on the piezoelectric crystal surface by the colloid.
In one of them embodiment of the present invention, which is characterized in that the conductive body is multiple laminated structure institutes group
At the laminated structure is conformed on the OLED ink jet printing head by the colloid.
The present invention also provides a kind of OLED inkjet-printing devices, comprising: ink-feeding device, to load ink material；Ink-jet
Printing head, to print to the ink material on the glass substrate of oled panel；Driver is electrically connected to the spray
Black printing head, to control the form and dimension of ink droplet；Ink-suuplying pump is connected to the ink jet printing head and the ink supply fills
Between setting, the ink material of the ink-feeding device is sent to the ink jet printing head；The OLED ink-jet is beaten
Printing equipment is set, which is characterized in that the above-mentioned OLED ink jet printing head of the ink jet printing head.
In one of them embodiment of the present invention, which is characterized in that the ink material is that organic material is organic to be formed
Functional layer.
In one of them embodiment of the present invention, which is characterized in that the organic function layer is emitting red light organic film, green
Color shines one of organic film, blue-light-emitting organic film and thin-film package organic film.
Detailed description of the invention
It, below will be to embodiment or this motion technology in order to illustrate more clearly of the technical solution in embodiment or this motion
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of this motion
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 shows the knot of existing OLED (organic light-emitting diode, OLED) ink jet printing head
Structure schematic diagram；And
Fig. 2 shows the structural schematic diagram of OLED ink jet printing head provided in an embodiment of the present invention；And
Fig. 3 shows the structural schematic diagram of OLED inkjet-printing device provided in an embodiment of the present invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the application
Example.The direction term that the application is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to
Limit the application.The similar unit of structure is with being given the same reference numerals in the figure.
To solve in OLED (organic light-emitting diode, OLED) inkjet printing processing procedure, functional layer has
Conductive structure is arranged in printing head structure by ozone layer destroying, the present invention in machine material.By with heavily conducting charge effect
The piezoelectric crystal surface of printing head is arranged in conductive body, can be by the electrostatic guide generated in inkjet printing processing procedure to conductive sheet
On body, then pass through wires guides electrostatic charge to spray head external security position release.To prevent ozone, function is avoided damage to
Ergosphere film surface improves OLED device luminous efficiency.
Referring to FIG. 2, Fig. 2 is the structural schematic diagram of OLED ink jet printing head provided in an embodiment of the present invention.The spray
First 200 include: inking chamber 20, to store ink；Ink supply entrance 30 enters inking chamber 20 to transmit ink；Piezo-electric crystal
50, it is connected to inking chamber 20, makes volume reducing to generate vibration, deformation to squeeze inking chamber 20, micro ink is because of ink
20 volume reducing of chamber and be extruded into ink droplet 40 from spray orifice 10；Conductive structure is electrically connected to spray head 200, to discharge spray head
200 electrostatic generated；Wherein, the conductive structure includes that conductive body 60 is set to 50 surface of piezo-electric crystal and conduction is drawn
Line 70 is connected to conductive body 60 and ground terminal 90.Wherein, by the piezo-electric crystal, the conductive structure and the ground connection
The electrostatic charge generated in print procedure is eliminated at end.Conductive body is connected to furthermore it is possible to select controller 80 further is arranged
Between 60 and ground terminal 90, sets itself program chooses whether function of eliminating static, opens then conducting and destatics.Preferably, it leads
Electric ontology 60 is as made by the metal material with heavily conducting charge effect.On the other hand, conductive body 60 also can be by conduction
Made by rubber or conductive plastics.
In one embodiment, conductive body 60 can be set to piezo-electric crystal 50 through mechanism design by the way of inlaying
Surface.
In one embodiment, conductive body 60 can conform to 50 surface of piezo-electric crystal or printing head by colloid.
Preferably, the colloid be conducting resinl, such as resin matrix be added conductive filler, the conductive filler be selected from gold, silver, copper, aluminium,
Zinc, iron, the powder of nickel, graphite or some conductive compounds.
In one embodiment, conductive body 60 is is made of multiple chip architectures.Each laminated structure whole face be fitted in
50 surface of piezo-electric crystal.
In addition, can be according to process requirement and the issuable electrostatic charge of ink jet printing head 200, conductive body 60 can be with
The set-up mode on the most surface of piezo-electric crystal 50 is conformed to using whole face, segmented touching, dimension can also be used in conductive body 60
It holds and is electrically connected piezo-electric crystal 50.It is three sections of conductive bodies 60 shown in Fig. 2.Segmented then avoid heat dissipation have some setbacks ask
Topic；Whole face fitting needs material to have both the good feature of thermal diffusivity.
It prints in production process, it is usually on piezo-electric crystal, so piezoelectric crystal surface has electricity that electrostatic, which generates position,
Lotus exists.The conductive structure provided through the invention is electrically connected to spray head 200, due to joined the conduction of easily conducting charge originally
Body 60, after charge generates, charge can tend to the conductive body 60 for preferentially flowing to 50 top of piezo-electric crystal, then be drawn by conduction
Line 70 exports to the ground terminal 90 of safety zone.Since charge can preferentially flow to the conductive body 60 of 50 top of piezo-electric crystal, institute
Will not be with charge contact with the ink side that spray orifice 10 is extruded into ink droplet 40, moisture content, existing micro amount of oxygen in ink or environment
Gas will not become the material structure of ozone layer destroying ink due to electrostatic interaction.
The setting of conductive structure through the invention, thus avoid ozone with the contact of organic material in ink, it can be effective
Guarantee the performance and quality of functional layer in OLED device.
The embodiment of the invention also provides a kind of OLED inkjet-printing device, such as Fig. 3, Fig. 3 provide for the embodiment of the present invention
OLED inkjet-printing device structural schematic diagram, the OLED inkjet-printing device 1000 include ink-feeding device 700, to fill
Carry ink material；Ink jet printing head 200 printing to ink material in subject, such as prints to oled panel
On glass substrate, required film layer structure, such as organic function layer are formed；Driver 300 is electrically connected to ink jet printing head
200, to control the form and dimension of ink droplet；Ink-suuplying pump 500 is connected between ink jet printing head 200 and ink-feeding device 700,
The ink material of ink-feeding device 700 is sent to ink jet printing head.Wherein, the ink jet printing head is above-mentioned
OLED ink jet printing head.
In one embodiment, the ink material is organic material to form organic function layer, the organic function layer
Wherein for emitting red light organic film, green emitting organic film, blue-light-emitting organic film and thin-film package organic film
One of.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from spirit and scope, can make various changes and profit
Decorations, therefore the protection scope of the application subjects to the scope of the claims.
Claims (10)
1. a kind of Organic Light Emitting Diode (organic light-emitting diode, OLED) ink jet printing head, comprising:
Inking chamber, to store ink；Ink supply entrance, to transmit ink into the inking chamber；Piezo-electric crystal is connected to the ink
Water cavity, to generate vibration, deformation to squeeze the inking chamber；Spray orifice, to form ink droplet；It is characterized by further comprising:
Conductive structure is electrically connected to the OLED ink jet printing head, wherein the conductive structure includes conductive body setting
In piezoelectric crystal surface；And
Conductive lead wire is connected to the conductive body and ground terminal；
Wherein, by the piezo-electric crystal, the conductive structure and the ground terminal, the electrostatic electricity generated in print procedure is eliminated
Lotus.
2. OLED ink jet printing head according to claim 1, which is characterized in that the conductive body is metal material institute
It is made.
3. OLED ink jet printing head according to claim 1, which is characterized in that the conductive body is embedded in the pressure
Transistor surface.
4. OLED ink jet printing head according to claim 1, which is characterized in that it further include colloid, the conductive body
The piezo-electric crystal is conformed to by the colloid.
5. OLED ink jet printing head according to claim 4, which is characterized in that the colloid is conducting resinl, described to lead
Electric glue includes conductive filler, and the conductive filler is selected from gold, silver, copper, aluminium, zinc, iron, the powder of nickel, graphite or some conductings
Close object.
6. OLED ink jet printing head according to claim 5, which is characterized in that the conductive body is multiple sheet knots
Structure is formed, and the laminated structure is conformed on the piezoelectric crystal surface by the colloid.
7. OLED ink jet printing head according to claim 5, which is characterized in that the conductive body is multiple
Shape structure is formed, and the laminated structure is conformed on the OLED ink jet printing head by the colloid.
8. a kind of OLED inkjet-printing device, comprising:
Ink-feeding device, to load ink material；
Ink jet printing head, to print to the ink material on the glass substrate of oled panel；
Driver is electrically connected to the ink jet printing head, to control the form and dimension of ink droplet；
Ink-suuplying pump is connected between the ink jet printing head and the ink-feeding device, to by the ink of the ink-feeding device
Water material is sent to the ink jet printing head；
The OLED inkjet-printing device, which is characterized in that the ink jet printing head is according to any in claim 1 to 7
OLED ink jet printing head described in.
9. OLED inkjet-printing device according to claim 8, which is characterized in that the ink material is organic material use
To form organic function layer.
10. OLED inkjet-printing device according to claim 9, which is characterized in that the organic function layer is red hair
One of light organic film, green emitting organic film, blue-light-emitting organic film and thin-film package organic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910602024.7A CN110271288B (en) | 2019-07-05 | 2019-07-05 | OLED ink-jet printing nozzle and printing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910602024.7A CN110271288B (en) | 2019-07-05 | 2019-07-05 | OLED ink-jet printing nozzle and printing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110271288A true CN110271288A (en) | 2019-09-24 |
| CN110271288B CN110271288B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910602024.7A Active CN110271288B (en) | 2019-07-05 | 2019-07-05 | OLED ink-jet printing nozzle and printing device thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN110271288B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111791599A (en) * | 2020-07-21 | 2020-10-20 | 广州威品技术研发有限公司 | Color digital printing machine |
| CN112428700A (en) * | 2020-11-11 | 2021-03-02 | 大连理工大学 | Integrated ink-jet printing manufacturing device and method for flexible bendable OLED screen |
| CN116021885A (en) * | 2023-01-31 | 2023-04-28 | 广东工业大学 | Flexible device determination method, system, apparatus and medium for inkjet printing apparatus |
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| CN116021885B (en) * | 2023-01-31 | 2024-04-19 | 广东工业大学 | Flexible device determination method, system, apparatus and medium for inkjet printing apparatus |
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| Publication number | Publication date |
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| CN110271288B (en) | 2020-05-22 |
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