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CN1942537A - Printing fluid for fluid-jet printing - Google Patents

Printing fluid for fluid-jet printing Download PDF

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Publication number
CN1942537A
CN1942537A CNA200580012084XA CN200580012084A CN1942537A CN 1942537 A CN1942537 A CN 1942537A CN A200580012084X A CNA200580012084X A CN A200580012084XA CN 200580012084 A CN200580012084 A CN 200580012084A CN 1942537 A CN1942537 A CN 1942537A
Authority
CN
China
Prior art keywords
size
fluid
printing
particle
distribution
Prior art date
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.)
Pending
Application number
CNA200580012084XA
Other languages
Chinese (zh)
Inventor
D·B·范达姆
M·A·弗舒伦
M·P·J·佩特斯
R·J·M·施罗德斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN1942537A publication Critical patent/CN1942537A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Ink Jet (AREA)

Abstract

The invention relates to a printing fluid suited for fluid-jet printing. The printing fluid comprises first particles having a first size (s1) that falls within a first size distribution (I), and second particles having a second size (s2) that falls within a second size distribution (II) different from said first size distribution, said first and second particles being of substantially a same material. It has been demonstrated that by using such a printing fluid a layer can be printed with an improved uniform layer thickness.

Description

The printing fluid that is used for fluid-jet printing
Technical field
The present invention relates to be suitable for the printing fluid of fluid-jet printing.The invention further relates to the method for making such printing liquid and the method for using the fluid-jet printing of printing liquid.
Background technology
Fluid-jet printing, what more be widely known by the people is its traditional name-spray ink Printing, is used at present much with relative high precision liquid to be printed in the on-chip application.One of these application are exactly to make polymer LED (Poly-LED) indicating meter.
Polymer led display comprises a large amount of photodiodes, and wherein each photodiode (being commonly referred to LED) comprises a folded independent stratum that is dissolved in the solvent in the pixel, and wherein, pixel is to have the limited zone of specifying size in advance.The little ink droplet that discharges from printhead is used to substrate to provide to comprise the described layer of solvent and the material of layer.
By the drying of spray ink Printing structure (for example pixel of polymer led display), described solvent is volatilized, causes the bed thickness of this structure to change usually.These variations can be small scale (for example, in pixel), and embody to some extent on the bigger yardstick (for example, on the substrate).
But the ink jet printing process that such use tradition ink is finished has a very little processing window, because the subtle change of any for example evaporation rate all will cause local bed thickness profile varying on the substrate.Such variation is difficult to avoid in the evaporation rate, and will often occur in practice.
In nearly all electronics, on big scale, require bed thickness even.On little yardstick, also require bed thickness constant usually.This is illustrated in, and bed thickness must be constant in the print structure.But, utilize traditional printed liquid, be difficult to obtain the constant bed thickness.
Summary of the invention
An object of the present invention is to provide the printing liquid that is suitable for fluid-jet printing, wherein the homogeneity of the thickness of printable layer is improved.For this reason, provide the printing that is suitable for fluid-jet printing liquid according to claim 1.
By test and Digital Simulation, the inventor has proved the printing liquid that comprises the particle with two kinds of particle size distribution by use, can print bed thickness layer more uniformly.
The migration of quality takes place in causing the evaporable drying, and this may cause the layer thickness distribution height of print structure or line inhomogeneous.Mass transfer comprises two main processes.First process is the convection current of ink to wire, causes (being also referred to as " coffee ring " effect) by volatilization, and wherein wire is the boundary line that is defined as between the zone that comprises ink and the extraneous zone that does not comprise ink.Second process is the diffusion of particle away from wire, and is the highest in the concentration of wire place particle.Therefore, there are two kinds of drying modes.
In first kind of pattern, convection current accounts for leading, and causes the bed thickness profile that two protuberances are arranged near wire.In second kind of pattern, diffusion accounts for leading, and the bed thickness profile has the shape of enclosed globe shade.
When drying process is between these two kinds of patterns, can obtain flat and bed thickness profile that uniform thickness is arranged.But its shortcoming is that such process has very little processing window, because the subtle change of any for example evaporation rate will cause local bed thickness profile varying on the substrate.
The invention solves this problem, wherein, provide a kind of ink with two kinds of particle size distribution.Macroparticle is with convection current dominant pattern drying, and small-particle is with diffusion dominant pattern drying.By the suitable mixing of sized particles, obtain the homogeneous thickness profile.
Independent claim have defined this aspect of the present invention and other aspects.
Appended claims have defined advantageous embodiment of the present invention.
Description of drawings
To illustrate these and other aspect of the present invention with reference to the embodiments described below.
In the accompanying drawings,
Fig. 1 illustrates the size of particles as the function of the volume fraction V that prints liquid according to the present invention.
Fig. 2 illustrates the Digital Simulation result of use according to the bed thickness of printing liquid of the present invention.
Fig. 3 illustrates the measuring result of layer thickness distribution on the surface of two kinds of spray ink Printings.
These figure do not draw according to size.Usually, same parts illustrates with identical reference number in the drawings.
Embodiment
Fig. 1 illustrates the size of particles as the printing liquid of the function of volume fraction V according to the present invention.Printing liquid comprises and has first size s 1First particle, this size falls into first size distribution I, and comprises and have the second size s 2Second particle, second size falls into the second distribution of sizes II different with described first size distribution I.First and second particle is actually same material.Described particle size distribution in most of the cases is normal state (Gauss) distribution around certain mean value.In Fig. 1, the mean value of distribution of sizes I and II is respectively with s M1And s M2Expression.Distribute the volume fraction V of I as can be seen greater than the volume fraction of distribution II.
Fig. 2 illustrates 3nm diameter (therefore, the s that accounts for weight 80% from comprising M1Equal 3nm) the thickness profile (indicating) that obtains of the printing liquid of particle with square and from comprising particle (therefore, the s of the 30nm diameter that accounts for weight 20% M2Equal 30nm) the simulation result of the bed thickness (indicating) that obtains of printing liquid with triangle.For simplicity, in emulation, be assumed to be non-Gaussian distribution (therefore, the width of distribution gets 0).The linear module of two axles is expressed as micron.The bed thickness of this mixture (conduct and, illustrate with rhombus) in the drawings is the bed thickness sum of two kinds of compositions.
Can sum up from further Digital Simulation, if macroparticle is at least greater than small-particle more than 10 times, if relational expression s just M2〉=10 * s M1Set up, then can obtain fully smooth bed thickness.
Emulation also shows if the first size mean value s that first size distribution I has M1Less than 3nm, and the second size mean value s that has of the second distribution of sizes II M2In the time of in 30nm arrives the 100nm scope, the smooth bed thickness profile that can obtain.
In addition, the massfraction that also sums up macroparticle should account for 10% to 40% of weight.Small particle size should be diameter 2nm or littler, and the diameter of macroparticle should be 30nm or bigger.If these conditions are satisfied, then the bed thickness of Da Yining has fully smooth profile.
Fig. 3 illustrates the measuring result to the bed thickness of two kinds of spray ink Printing lines, and linear module is expressed as micron.Article two, line is to utilize the printing liquid with different particles mixtures to print. Curve 1 and 2 illustrates the cross section of print wire, and its base portion has been calibrated mutually allowing and compared.
The mensuration cross section of the line that the printing liquid of particle of the 30nm diameter of the particle that comprises the 2nm diameter that accounts for weight 80% and 20% weight prints is used in curve 1 expression.The mensuration cross section of the line that the printing liquid of the particle that comprises the 2nm diameter that accounts for weight 100% prints is used in curve 2 expression.
Reach a conclusion from these tests, the sizable particle of sub-fraction is joined in the printing liquid that comprises certain particle, can obtain the uniform more result of thickness profile of printable layer.These measuring results have confirmed Digital Simulation result shown in figure 2.
The present invention is particularly useful for comprising the printing liquid of conductive metal particles (for example, silver), and is applicable to the printing liquid that comprises (luminous) polymkeric substance.Water is a kind of suitable solvent of dissolved particles.
Should be noted that the foregoing description is used for explanation rather than restriction the present invention, and those skilled in the art can design many alternate embodiments under the situation of the scope that does not depart from accompanying Claim.In the claims, any reference symbol between bracket should not be construed as the restriction to claim.Speech " comprise " do not get rid of with claim in listed other different elements and the existence of step.Do not get rid of at the speech " " of element front and to have a plurality of such elements.

Claims (7)

1. printing fluid that is applicable to fluid-jet printing, this printing fluid comprise to have and fall into the distribute first size (s of (I) of first size 1) first particle and having fall into and be different from the distribute second size (s of second distribution of sizes (II) of (I) of first size 2) second particle, described first and second particles are actually identical material.
2. a manufacturing is applicable to the method for the printing fluid of fluid-jet printing, and this method comprises:
The first step, manufacturing has the first size (s that falls into first size distribution (I) 1) first particle and
In second step, manufacturing has the second size (s that falls into second distribution of sizes (II) different with first size distribution (I) 2) second particle, described first and second particles are actually identical material.
3. the method for a fluid-jet printing, this method are used as the liquid of the liquid that requires in the claim 1 or the method manufacturing of using claim 2.
4. product that produces according to the method for claim 3.
5. according to the liquid of claim 1, wherein, first size distributes and has first size mean value m1, and second distribution of sizes has the second size mean value m2, and satisfies relational expression m2 〉=10 * m1.
6. according to the liquid of claim 5, wherein, first size distributes and has first size mean value m1, and second distribution of sizes has the second size mean value m2, and m1 is less than 3nm, and m2 at 30nm in the 100nm scope.
7. according to the liquid of claim 1, wherein, the massfraction of second particle is between 10% to 40% scope of weight.
CNA200580012084XA 2004-04-06 2005-03-24 Printing fluid for fluid-jet printing Pending CN1942537A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04101416 2004-04-06
EP04101416.8 2004-04-06

Publications (1)

Publication Number Publication Date
CN1942537A true CN1942537A (en) 2007-04-04

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CNA200580012084XA Pending CN1942537A (en) 2004-04-06 2005-03-24 Printing fluid for fluid-jet printing

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EP (1) EP1735391A1 (en)
JP (1) JP2007533793A (en)
CN (1) CN1942537A (en)
TW (1) TW200604299A (en)
WO (1) WO2005097920A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8659158B2 (en) 2006-08-16 2014-02-25 Funai Electric Co., Ltd. Thermally inkjettable acrylic dielectric ink formulation and process

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* Cited by examiner, † Cited by third party
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US7098163B2 (en) * 1998-08-27 2006-08-29 Cabot Corporation Method of producing membrane electrode assemblies for use in proton exchange membrane and direct methanol fuel cells
DE60025897T3 (en) * 1999-12-14 2013-06-27 Rohm And Haas Co. polymer binder
US7524528B2 (en) * 2001-10-05 2009-04-28 Cabot Corporation Precursor compositions and methods for the deposition of passive electrical components on a substrate
DE10259246A1 (en) * 2002-12-17 2004-07-01 Merck Patent Gmbh Inorganic spherical absorption pigments

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JP2007533793A (en) 2007-11-22
EP1735391A1 (en) 2006-12-27
TW200604299A (en) 2006-02-01
WO2005097920A1 (en) 2005-10-20

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