CN101669046B - Ink for color filter and method for producing color filter - Google Patents
Ink for color filter and method for producing color filter Download PDFInfo
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- CN101669046B CN101669046B CN2008800058310A CN200880005831A CN101669046B CN 101669046 B CN101669046 B CN 101669046B CN 2008800058310 A CN2008800058310 A CN 2008800058310A CN 200880005831 A CN200880005831 A CN 200880005831A CN 101669046 B CN101669046 B CN 101669046B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/324—Inkjet printing inks characterised by colouring agents containing carbon black
- C09D11/326—Inkjet printing inks characterised by colouring agents containing carbon black characterised by the pigment dispersant
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/003—Printing processes to produce particular kinds of printed work, e.g. patterns on optical devices, e.g. lens elements; for the production of optical devices
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
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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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/09—Ink jet technology used for manufacturing optical filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Optical Filters (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The object of this invention is to suppress the drying rate of an ink. Specifically disclosed is an ink containing 50-88% by weight of a solvent having a saturated vapor pressure of 2-200 Pa at 20 DEG C.
Description
Technical field
The present invention relates to ink gun (ink-jethead) that a kind of utilization has a plurality of discharge nozzles the transparency carrier of the interval region that has light shielding part and obtained at interval by this light shielding part is supplied with printing ink; Fill the color filter manufacturing method of above-mentioned interval region with printing ink, and in said color filter manufacturing method particularly suitable ink for color filter.
Background technology
In recent years, the increase in demand of personal computer, colour liquid crystal display device, and the size of display also is tending towards maximizing gradually.
As the existing color filter manufacturing installation that provides, the main device that utilizes with the manufacturing process that is lithographically main body through spin coater or coating machine that uses.
But, in recent years, consider reduce cost, strong day by day to the misgivings of environment, use the color filter manufacturing method of ink gun just get most of the attention (with reference to patent documentation 1, patent documentation 2, patent documentation 3, patent documentation 4) with a plurality of discharge nozzles.
If adopt the color filter manufacturing method that uses ink gun to make color filter, then can enjoy the advantage of the amount that can cut down resist, printing ink, can enjoy the advantage of drug-treated such as can not need developing simultaneously.
Further specify.
In addition, adopting ink-jetting style in the paper medium, to supply with in the purposes of printing ink, as printing ink; Because of the relation of coating paper is paid attention to the impregnability to paper; Moreover, because of not heating the relation of just using after the coating, extremely do not need thermotolerance; The color mechanism that the light absorption of employing through the look material utilizes reflected colour to develop the color is considered the main aqueous ink that adopts from the viewpoint of security, impregnability.
Patent documentation 1: the spy opens flat 9-203803 communique
Patent documentation 2: the spy opens flat 9-230129 communique
Patent documentation 3: the spy opens the 2002-62422 communique
Patent documentation 4: the spy opens the 2007-4181 communique
Summary of the invention
When using the color filter manufacturing method of ink gun to make color filter, produce by discharge nozzle and stop up the unfavorable conditions such as dawn that caused printing ink is discharged the interval region that the reduction of bad, quantitative property, accuracy at target reduce, obtained at interval by light shielding part.
Because above-mentioned unfavorable condition; Cause to guarantee in the interval region that is obtained at interval by light shielding part, seamlessly to fill the printing ink of regulation; Printing ink disperse to as in the adjacent interval region of the interval region of target, the result causes realizing desirable coloring.
Therefore,, then cause producing bad point, produce unfavorable conditions such as form and aspect inequality, chromaticity attenuating, colour contrast attenuating, cause color filter to become substandard products under the situation worst if the color filter of making is used for personal computer, colour liquid crystal display device.
The reason that produces above-mentioned unfavorable condition is following, and printing ink is attached to the discharge nozzle face and solidifies, and perhaps printing ink also has quick-drying except that having moisture dispersibility, and the wetting state of the pixel faces that has on the glass substrate in addition is poor, or fractional wettability is poor.Wait at present and clean as by the transparent glass substrate of painted thing, improve wetting state, the inhibition dawn of printing ink thus with the physics reformation cleaning device that uses ultraviolet ray, plasma etc.
Further specify.
In patent documentation 1 described color filter manufacturing method; Need carry out " utilizing the surface treatment of oleophylic China ink treating agent " to the atomic zonule of the so-called recess that separated by protuberance; In order to make protuberance carry out above-mentioned surface treatment non-cohesive " oleophylic China ink treating agent " with anti-printing ink property; Pay particular attention to and very loaded down with trivial details, therefore there is unpractical problem in said method.
In patent documentation 2 described color filter manufacturing methods; For the irradiation energy line needs light source, is used for shining in the whole space of object energy line and the device context of no veil between light source and irradiation object thing; Consider and be arranged on the interference of the ink-jet coating apparatus on the common door type transfer table etc., have the maximization of color filter manufacturing installation and by the caused problems such as area gigantism that are provided with of the splitization of apparatus for coating and energy line irradiation unit.
In patent documentation 3 described color filter manufacturing methods; When the cross section of the normal direction of formation substrate is the next door of inverted cone shape; Must adopt following very instability or complicated step; Soon the negative type emulsion is made public than normal exposure with lacking and is formed the back taper shape, or through the reversing shape transferred thereon formation back taper shape along awl that cambium layer closes the pattern gained, has unpractical problem.
In patent documentation 4 described manufacturing method of color filter, put down in writing and used the content of solvent, but do not obtained understanding basically about ink discharge device with specific vapour pressure.In fact, existence only through using said printing ink to be difficult to stably make the problem of color filter, through improving material and installing both, is sought the manufacturing method of color filter that can have unfavorable condition ground not make.
Promptly; Patent documentation 1, patent documentation 2, patent documentation 3, patent documentation 4 described color filter manufacturing methods; Give anti-printing ink property difference to the top of BM (black matrix, black matrix) with by each flat in the zone that BM surrounded, making needs the oleophylic China ink property of the part that printing ink adheres to not hope that more by force, the anti-printing ink property of the part that printing ink adheres to is stronger; Eliminate problems such as dawn, colour mixture thus, but have the problems referred to above respectively.
In addition, the reason that produces above-mentioned unfavorable condition is the printing ink discharge rate trace extremely of discharge nozzle, so be that the printing ink of target carries out drying in circling in the air and when hitting with the interval region of regulation, causes producing dawn, uneven thickness.
And then; The reason that produces above-mentioned unfavorable condition is following, and ink setting solidified during a plurality of discharge nozzles stopped the printing ink discharging operation, and the residue thing of curing is piled up and caused that discharge nozzle stops up; The residue thing causes that the direction of the printing ink that is discharged from is crooked, and the discharge rate of printing ink is uneven.
Further specify.
Develop the requirement of High Resolution Display in recent years in order to tackle with color filter; Need " corresponding to the miniaturization of the coating droplet of ink of pixel miniaturization "; If make coating droplet of ink miniaturization, then can't ignore drop flight path, and printing ink attached to influence as ink setting behind the object pixels zone.
As a result, produce the problems referred to above.
In addition, for ink for color filter, because it is applied to the relation on the transparency carrier with the interval region that is obtained at interval by light shielding part; Require fully not impregnability to substrate, moreover, because the relation that after coating, need be heating and curing; Require thermotolerance; Through making backlight see through make its colour developing, and then to be necessary for organic solvent from viewpoints such as thermotolerances be printing ink, so ink for color filter is with to utilize ink-jetting style to be supplied in the printing ink of paper medium different fully.
The present invention in view of the above problems and research obtains prevents or suppresses to take place dawn, colour mixture etc. to provide a kind of, even and under the situation that makes the drop miniaturization, the ink for color filter that also can reduce dry influence is as the 1st purpose; Prevent or suppress to take place dawn, colour mixture etc. to provide a kind of, even and under the situation of the drop miniaturization that makes printing ink (colorant), the color filter manufacturing method that also can reduce dry influence is as the 2nd purpose.
Ink for color filter of the present invention; Be supplied in the transparency carrier of the interval region that has light shielding part and obtained at interval by this light shielding part through ink gun with a plurality of discharge nozzles; Fill above-mentioned interval region; It is characterized in that, contain 50～88 weight % have the saturated vapor pressure of 2～200Pa under 20 ℃ solvent.
Through discharging said ink for color filter by discharge nozzle and be supplied in transparency carrier, manufacturing color filter under the state of dawn, colour mixture etc. can prevented to produce.
Then; Because ink for color filter contains above-mentioned solvent; So be applicable under the situation of color filter manufacturing method, can preventing or reduce the generation of the unfavorable condition (bending of the obstruction of discharge nozzle, the flight path of ink for color filter) that causes owing to ink for color filter drying or dry solidification.
In addition; Preferred above-mentioned solvent under 20 ℃, have 2～50Pa saturated vapor pressure, contain the above-mentioned solvent of 50～88 weight %; Can realize following advantage; It is crooked to prevent or reduce the flight path that produces discharge nozzle obstruction, ink for color filter, can fill ink for color filter at desirable interval region simultaneously with not producing dawn, and can make the thickness of the interior ink for color filter of interval region even.
In addition; Preferred above-mentioned ink for color filter contains two kinds of solvents at least, and is wherein a kind of for surface tension is the solvent of 35～45mN/m, and wherein another kind is the solvent of 20～30mN/m for surface tension; Make and carry out more stable ink-jet and discharge and become possibility; Diffusion when ink for color filter hits simultaneously becomes good especially, suppresses shortcomings such as dawn, can yield rate make color filter well.
In addition; Preferred surface tension force is that the vapour pressure of the solvent of 35～45mN/m is higher than the vapour pressure that surface tension is the solvent of 20～30mN/m; Surface tension is that the solvent of 35～45mN/m helps to discharge stabilizing effect; So the while, owing to the higher preferential evaporation of vapour pressure, hitting the back surface tension was the effect increase of the solvent of 20～30mN/m, therefore can make the diffusion in pixel good especially when hitting.
Color filter manufacturing method of the present invention be ink gun through having a plurality of discharge nozzles with the transparency carrier of inking in the interval region that has light shielding part and obtained at interval by this light shielding part, fill the method for above-mentioned interval region with printing ink, it is characterized in that,
Above-mentioned printing ink contains 50～88 weight % have the saturated vapor pressure of 2～200Pa under 20 ℃ solvent.
In said color filter manufacturing method, contain the printing ink of above-mentioned solvent and be supplied in transparency carrier through discharging by discharge nozzle, can prevent to produce manufacturing color filter under the state of dawn, colour mixture etc.
Because printing ink contains above-mentioned solvent, so can prevent or reduce the generation by ink setting or the caused unfavorable condition of dry solidification (bending of the obstruction of discharge nozzle, printing ink flight path).
In addition; Preferred above-mentioned solvent has the saturated vapor pressure of 2～50Pa under 20 ℃; Above-mentioned printing ink contains the above-mentioned solvent of 50～88 weight %, can realize following advantage, can prevent or reduce the obstruction that produces discharge nozzle, the bending of printing ink flight path; Can not produce dawn ground filling printing ink at desirable interval region simultaneously, and can make the thickness of the printing ink in the interval region even.
In addition; Preferred above-mentioned printing ink contains two kinds of solvents at least, and wherein a kind of surface tension is 35～45mN/m, and wherein alternative surface tension is 20～30mN/m; Make and carry out more stable ink-jet and discharge and become possibility; Diffusion when printing ink hits simultaneously becomes good especially, suppresses shortcomings such as dawn, can yield rate make color filter well.
In addition; Preferred surface tension force is that the vapour pressure of the solvent of 35～45mN/m is higher than the vapour pressure that surface tension is the solvent of 20～30mN/m; The capillary solvent that has surface tension and be 35～45mN/m helps to discharge stabilizing effect; So the while, owing to the higher preferential evaporation of vapour pressure, hitting the back surface tension was the effect increase of the solvent of 20～30mN/m, therefore can make the diffusion in pixel good especially when hitting.
And then; For the printing ink that makes trace is discharged, hit in small above-mentioned interval region, with the wetting dispersion of printing ink, use ethers such as propylene glycol methyl ether acetate etc. to have the solvent of high saturated vapor pressure at present at this interval region; So rate of drying (be below 1 second drying time) is faster than wetting rate of dispersion; Therefore need wait the processing that improves moisture dispersibility through the cleaning of above-mentioned transparency carrier, relative therewith, the present invention can reduce rate of drying (be more than 5 seconds drying time) through the solvent that use has low saturated vapor pressure; So need not to be used to especially improve the processing of moisture dispersibility; The diameter that hits that one hair oil China ink is discharged when hitting is about 60 μ m at present, and the present invention can increase to 80～150 μ m with hitting diameter, improves wetting state.
In addition, have the solvent of low saturated vapor pressure, can enjoy following advantage through use; When the discharge drop forms, utilize heat or pressure to change when discharging printing ink, the liquid proterties of printing ink is stable and drop formation is also stable; Around discharge nozzle, even residue liquid is arranged, the also few of dry solidification taken place around the discharge nozzle mouth; The influence that when discharging drop is formed can be reduced, at drop in-flight, the evaporation capacity of solvent can be reduced; After hitting, can mix a plurality of drops etc. that hit well.
Ink for color filter of the present invention has following distinctive effect; Can be to making contributions preventing to produce under the state of dawn, colour mixture etc. the manufacturing color filter; And be applicable under the situation of color filter manufacturing method, can preventing or reduce the generation of the unfavorable condition (bending of the obstruction of discharge nozzle, ink for color filter flight path) that causes by ink for color filter drying or dry solidification.
Color filter manufacturing method of the present invention has following distinctive effect; Can prevent to produce manufacturing color filter under the state of dawn, colour mixture etc., and can prevent or reduce the generation of the unfavorable condition (bending of the obstruction of discharge nozzle, printing ink flight path) that causes by ink setting or dry solidification.
Embodiment
Below, the ink for color filter that present invention will be described in detail with reference to the accompanying and the embodiment of color filter manufacturing method.
Fig. 1 is the sketch of an embodiment of the color filter manufacturing installation of the suitable color filter manufacturing method of the present invention of expression.
Said color filter manufacturing installation is 1 upper support absorptive table 3, coating door frame (gantry) 4, camera door frame 6 etc. on the chassis.
Absorptive table 3 absorption keep glass substrate 2, in order to realize the location of this glass substrate 2, are rotated driving through not shown drive unit, guide piece, drive in the Y direction simultaneously.
Coating door frame 4 keeps ink gun 5, for printing ink (color material, ink for color filter) is coated on the glass substrate 2, through not shown drive unit, guide piece, drives at directions X.In addition, in order to regulate the relative position with glass substrate 2,, drive in Z direction, Y direction through not shown drive unit, guide piece.
Alignment camera 7,8 detects the mark (not shown) of glass substrates 2, makes absorptive table 3 rotations based on the marker detection result of alignment camera 7,8, and/or it is moved in the Y direction, can realize the alignment of glass substrate 2 thus.
Need to prove, X, Y represent for stipulate be adsorbed glass substrate 2 that platform 3 absorption keeps above parallel plane and the mutually perpendicular direction set, Z representes and the perpendicular direction in plane by X, Y defined.
Therefore, while can ink gun 5 be moved through coating door frame 4 is moved, with inking in glass substrate 2 and make color filter.
Fig. 2 is used for supplying with to ink gun 5 sketch of the structure of printing ink for expression.
Said structure has main jar 51 that takes in printing ink; By main jar 51 access 52 of deriving printing ink; Embed the switch valve 53 in the access 52; Supply with auxilliary jar of (sub tank) 54 of printing ink to top through access 52; Go out the ink gun 5 of printing ink by auxilliary jar 54 lower guide; The access 57 that switch valve 56 arranged through embedding to main jar 51 exert pressure add voltage regulator 58; The vent valve 59 that is communicated with the top of auxilliary jar 54; And is connected a mould component 55 that surrounds auxilliary jar 54 formation negative pressure chamber simultaneously with auxilliary jar 54 top and bottom.
Therefore, open switch valve 53 by main jar 51 with inking in auxilliary jar 54, the off switch valve 53 afterwards, make the discharge nozzle work of ink gun 5, can discharge printing ink thus.
Above-mentioned printing ink is hybrid resin, solvent, pigment, mixed curing agent, spreading agent or other adjuvants etc. obtain as required; After being sprayed by the light shielding part area surrounded; Through drying, heating or irradiation ultraviolet radiation homenergic line it is solidified, can process the pixel of color filter.
Here, as resin, can enumerate acryl resin, alkyd resin, melamine resin, epoxy resin, polyvinyl alcohol (PVA), phenolics, polyamide, polyamidoimide, polyimide etc., but be not limited to this.
Preferred polyimide resin in the above-mentioned substance can be the state as the polyamic acid of polyimide precursor, also can use through in skeleton, importing hydroxyl or sulfonyl isopolarity group has improved the deliquescent soluble polyimide to solvent.Polyamic acid can obtain through tetracarboxylic dianhydride and diamine reactant, can use material arbitrarily such as the aliphatic category or the alicyclic ring same clan, the fragrant same clan, fluorine-containing material.In addition, as the part of diamines,, then can make good with the cohesive of inorganic substrate if use siloxane diamine.Usually use the siloxane diamine of the amount of 1～20 mole of % in whole diamines.Can't bring into play the effect that cohesive improves at least if the amount of siloxane diamine is crossed, thermotolerance reduces if cross at most.As the concrete example of siloxane diamine, can enumerate two-3-(aminopropyl) tetramethyl silica alkane etc.
In addition, the also preferred acryl resin that uses does not limit especially, but can preferably use the multipolymer of unsaturated carboxylic acid and alkene type unsaturated compound.As the example of unsaturated carboxylic acid, for example can enumerate acrylic acid, methacrylic acid, itaconic acid, butenoic acid, maleic acid, fumaric acid, vinyl acetic acid or acid anhydrides etc.Above-mentioned substance can use separately, uses but also can be combined into the alkene type unsaturated compound of other copolymerization to exercise.But alkene type unsaturated compound as copolymerization; Particularly; Can enumerate unsaturated carboxylic acid alkyl esters such as methyl acrylate, methyl methacrylate, ethyl acrylate, Jia Jibingxisuanyizhi, acrylic acid n-propyl, isopropyl acrylate, n propyl methacrylate, isopropyl methacrylate, n-butyl acrylate, n-BMA, sec-butyl acrylate, the secondary butyl ester of methacrylic acid, isobutyl acrylate, isobutyl methacrylate, tert-butyl acrylate, metering system tert-butyl acrylate, acrylic acid n-pentyl ester, methacrylic acid n-pentyl ester, acrylic acid 2-hydroxy methacrylate, 2-hydroxyethyl methacrylate, benzyl acrylate, benzyl methacrylate; Unsaturated carboxylic acid aminoalkyl esters such as aromatic vinyl compounds such as styrene, p-methylstyrene, o-methyl styrene, a methyl styrene, AMS, acrylic-amino ethyl ester; Unsaturated carboxylic acid such as glycidyl acrylate, GMA ethylene oxidic ester; Vinyl esters of carboxylic acids such as vinyl acetate, propionate; Acrylonitrile compounds, 1 such as vinyl cyanide, methacrylonitrile, α-Lv Daibingxijing; Aliphatics conjugated diolefines such as 3-butadiene, isoprene; Each end has macromonomers such as the polystyrene, PMA, polymethylmethacrylate, butyl polyacrylate, poly-n-butyl methacrylate, polysiloxane of acryloyl group or methacryl etc., but is not limited to above-mentioned substance.
Preferably has stable on heating resin.In addition, must be in the viewing area the high resin of the transparency.
Pigment can be in dyestuff, the pigment class any, if but consider thermotolerance then be preferably pigment class, organic pigment class more preferably.When the representative organic pigment that can be used for printing ink is represented with color index; As red pigment; Pigment Red 9,97,122,123,144,149,166,168,177,190,192,209,215,216,224,254 etc. can be enumerated,, pigment Green 7,10,36,47 etc. can be enumerated as viridine green; As blue pigment, can enumerate pigment blue 15: 3,15:4,15:6,21,22,60,64 etc.Pigment can carry out surface treatments such as rosin processing, acidic treatment, basic treatment as required.
Above-mentioned solvent has the effect that prevents that shower nozzle obstruction and printing ink from also not solidifying when hitting on the substrate.Whether the obstruction of shower nozzle can eject judgement after off and on, for example discharge stopped for 5 seconds with printing ink.In addition, even printing ink did not solidify when hitting on the substrate yet, can with the material wiping of cotton rod and so on, confirm through the substrate after heat drying does not hit by adhering to printing ink on the cotton rod.
As above-mentioned solvent, preferably the saturated vapor pressure under 20 ℃ is the solvent in the scope of 2～200Pa, more preferably is the solvent in the scope of 2～50Pa.If saturated vapor pressure less than 2Pa, then exists preparation elongated drying time, but till carrying substrate, needs for a long time the problem that the productive temp time is slack-off; If saturated vapor pressure surpasses 200Pa, then compare rate of drying and accelerate with the wetting rate of dispersion of printing ink in pixel, become uneven easily, produce the shower nozzle blocking problem in addition, so not preferred.The said solvent that preferably contains 50～88 weight % with respect to total ink.Less than 50 weight %, then the effect of solvent diminishes if this is, is prone to produce the obstruction of shower nozzle, so not preferred; If more than 88 weight %, the necessary amount of the solid contents such as can't guaranteeing pigment and resin that then becomes is difficult to obtain as the desirable color of color filter.
As said solvent; For example can enumerate benzylisoeugenol, hexyl ether, acetonyl acetone, isophorone, caproic acid, sad, 1-octanol, 1 nonyl alcohol, benzylalcohol, benzyl acetate, ethyl benzoate, diethy-aceto oxalate, diethyl maleate, N-Methyl pyrrolidone, ethylene carbonate, propylene carbonate, ethylene glycol monophenyl ether acetate (phenyl cellosolveacetate), methyl benzoate, ethyl benzoate, diethyl malonate, beta-propiolactone, gamma-butyrolacton, gamma-valerolactone, δ-Wu Neizhi, γ-Ji Neizhi, 6-caprolactone, diacetone alcohol, tripropylene glycol methyl ether, dipropylene glycol n-propyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, propylene glycol phenyl ether, 1,3 butylene glycol diacetate esters etc.In the above-mentioned solvent, dipropylene glycol n-butyl ether, gamma-butyrolacton are good preferred because of the inhibition effect and the pigment-dispersing of drying, and then dipropylene glycol n-butyl ether more preferably.In addition, said solvent can mix two or more, also can further contain other solvents.
As other solvents; For example can enumerate (gathering) alkylene glycol ether solvents such as glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, carbitol, glycol monoethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, dihydroxypropane single-ether, diethylene glycol monomethyl ether; Or propylene glycol monoethyl ether acetate, ethyl acetoacetate, 3-methoxypropionic acid methyl esters, 3-methyl-aliphatic esters such as 3-methoxyl butylacetic acid ester; Or ethanol, butanols, 3-methyl-ketone, N-N-methyl-2-2-pyrrolidone N-, N such as aliphatics alcohols, cyclopentanone, cyclohexanone such as 3-methoxybutanol; N-dimethyl acetamide, N; Amide-type polar solvents such as dinethylformamide, toluene, xylene etc. are aromatic hydrocarbon based etc., but are not limited to said material.
Under any circumstance, as long as solvent has the saturated vapor pressure of 2～200Pa under 20 ℃ (normally used temperature), the solvent that printing ink contains 50～88 weight % gets final product, and also can contain other solvents; In addition, preferred solvent has the saturated vapor pressure of 2～50Pa under 20 ℃, and printing ink contains the solvent of 50～88 weight %, also can contain other solvents in this case.
Saturated vapor pressure then exists preparation elongated drying time less than 2Pa if this is, until needing for a long time the problem that the productive temp time is slack-off till the carrying substrate; If saturated vapor pressure surpasses 200Pa or solvent less than 50 weight %, the problem that then exists rate of drying to become faster than wetting rate of dispersion; If solvent is more than 88 weight %, the necessary amount of the solid contents such as can't guaranteeing pigment and resin that then becomes.
As printing ink, can adopt N-methyl-2 pyrrolidone with the saturated vapor pressure that under 20 ℃, has 39Pa as solvent, solid state components such as pigment, resin, spreading agent are the printing ink of 15 weight %, in this case, contain the solvent of 85 weight %.
In addition, can also adopt N-methyl-2 pyrrolidone, have 2-ethoxyethyl group ether and the solvent that dipropylene glycol n-butyl ether with saturated vapor pressure of 8Pa is mixed gained of the saturated vapor pressure of 50Pa.
In a word, can mix solvent arbitrarily, make the saturated vapor pressure that under 20 ℃, has 2～200Pa, preferably have the saturated vapor pressure of 2～50Pa.
As printing ink, preferred surface tension force is the printing ink of 30～40mN/m.If surface tension not in said scope, when then being discharged by the discharge nozzle of ink gun 5, produces satellite line (satellite) or flight bending etc. sometimes, possibly cause the pixel generation colour mixture of the different colours of color filter, so not preferred.As capillary assay method, can enumerate ring method, plate method, sessile drop method etc., but consider that error at measurment is little, preferred sessile drop method.As the determinator that utilizes sessile drop method, for example can enumerate " DropMaster 500 " of consonance interface science Co., Ltd..
Printing ink preferably has the surface tension before the discharge of above-mentioned scope, and the surface tension when hitting is 20～30mN/m.When the surface tension when hitting substrate was excessive, when that is to say greater than 30mN/m, the power of desiring printing ink self surface area is dwindled worked.The so diffusion variation of printing ink in pixel, the result causes producing the dawn defective of color filter, so not preferred.That is, excessive as the preferred 30～40mN/m of surface tension before the printing ink discharge, the surface tension when preferred printing ink hits is littler than it, becomes 20～30mN/m.Think that the surface tension when printing ink is hit is favourable to ink diffusion less than 20mN/m, but owing to be difficult to selective solvent and resin, so create this capillary printing ink and unrealistic.Surface tension when said printing ink hits can be measured as follows: the recovery of placing printing ink in the position of usually placing substrate is with bottle etc., through actual carry out ink-jet and discharge printing ink after the printing ink that obtains that reclaims measure.
And then preferred above-mentioned printing ink contains two kinds of solvents at least, and wherein a kind of surface tension is 35～45mN/m, and alternative surface tension is 20～30mN/m.Through containing said two kinds of solvents at least, can not damage the surface tension of controlling printing ink diffusely of printing ink when hitting, can carry out stable ink-jet and discharge.
As surface tension is the solvent of 35～45mN/m; Particularly can enumerate diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, glycol monomethyl phenyl ether, N-Methyl pyrrolidone, propylene carbonate, 2-methyl isophthalic acid; Ammediol, 1,3 butylene glycol, gamma-butyrolacton etc.
As surface tension is the solvent of 20～30mN/m; Can enumerate dipropylene glycol methyl ether, tripropylene glycol methyl ether, propylene glycol n-propyl ether, dipropylene glycol n-propyl ether, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, propylene glycol phenyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether acetic acid esters, cyclohexyl acetate, tetrahydrofurfuryl acetate, 1,6-hexanol diacetate esters, 3-methoxyl butylacetic acid ester, 3-ethoxyl ethyl propionate, 3-methoxyl-3-methyl-butylacetic acid ester, 3-methoxyl-3-methyl-butylacetic acid ester etc.
In the said material, more preferably surface tension is that the vapour pressure of the solvent of 35～45mN/m is higher than the vapour pressure that surface tension is the solvent of 20～30mN/m.Through containing solvent with said combination, make and carry out more stable ink-jet and discharge and become possibility, the diffusion when printing ink hits simultaneously becomes good especially, suppresses shortcomings such as dawn, can yield rate make color filter well.Infer that this is to help to discharge stabilizing effect because surface tension is the solvent of 35～45mN/m; So when hitting simultaneously because the higher preferential evaporation of vapour pressure; Hitting the back surface tension is the effect increase of the solvent of 20～30mN/m, and therefore the diffusion in pixel becomes good especially.
As said solvent; Particularly; Can enumerate tripropylene glycol methyl ether, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, propylene glycol phenyl ether, dipropylene glycol methyl ether acetic acid esters, cyclohexyl acetate, 1 that diethylene glycol monomethyl ether that surface tension is 35～45mN/m and surface tension are 20～30mN/m; Each combination of 6-hexanol diacetate esters; Surface tension is the glycol monomethyl phenyl ether of 35～45mN/m and the combination of the tripropylene glycol n-butyl ether that surface tension is 20～30mN/m; Surface tension is N-Methyl pyrrolidone, propylene carbonate, the 2-methyl isophthalic acid of 35～45mN/m; Ammediol, 1; Any of 3-butylene glycol and surface tension are tripropylene glycol methyl ether, the tripropylene glycol n-butyl ether of 20～30mN/m, each combination of dipropylene glycol methyl ether acetic acid esters; Surface tension is the gamma-butyrolacton of 35～45mN/m and tripropylene glycol methyl ether, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, propylene glycol phenyl ether, dipropylene glycol methyl ether acetic acid esters, the cyclohexyl acetate, 1 that surface tension is 20～30mN/m, each combination of 6-hexanol diacetate esters.More preferably, consider, especially preferably contain the combination of gamma-butyrolacton and dipropylene glycol n-butyl ether in the combinations thereof from the viewpoint of pigment-dispersing.As the preferred ratio of above-mentioned solvent combinations, surface tension is that the ratio of the solvent of 20mN/m～30mN/m and the solvent that surface tension is 35mN/m～45mN/m is in 90/10～90/10 scope.Even in said scope, also can not obtain effect of the present invention, but the good especially effect of wetting dispersion when stable ink-jet discharge and printing ink are hit diminishes, therefore preferred above-mentioned ratio.In addition, the solvent that contains said combination can further contain other solvents, only otherwise influencing above-mentioned advantage gets final product, can use solvent arbitrarily.Particularly; Further to contain vapour pressure under 20 ℃ be more than the 200Pa and surface tension when being the solvent of 20～30mN/m; Ink surface tension when not only being beneficial to the control discharge; And this solvent evaporates rapidly when hitting, and therefore can fully obtain containing solvent and the surface tension that surface tension is 20mN/m～30mN/m is the effect of Combination of the solvent of 35mN/m～45mN/m, so be preferred.The solvent of said rapid evaporation is that the solvent total amount of 2～200Pa can contain 1～40 weight % with respect to vapour pressure.As said solvent, not special the qualification, but can enumerate propylene glycol methyl ether acetate etc.
Preferably use surfactant as other adjuvants, can use acrylic compounds, silicon class, fluorine class surfactant, if but particularly use the acrylic compounds surfactant, then effect is remarkable aspect the wetting dispersion when raising is hit, so be preferred.
As the acrylic compounds surfactant; The multipolymer of preferred acrylic monomer; But material as copolymerization; For example can enumerate (methyl) alkyl-acrylates such as (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) 2-ethylhexyl acrylate, (methyl) dodecylacrylate, (methyl) acrylic acid stearyl, (methyl) acrylic acid cetyl ester; (methyl) acrylic acid benzyl ester, (methyl) acrylic acid naphthyl ester, 2-hydroxy-4-methyl acryloyl-oxy base oxethyl-benzophenone, 3-(2H-1; 2; 3-benzotriazole-2-yl)-4-leptodactyline-(methyl) acrylic ester etc. contains aromatic (methyl) alkyl-acrylates; (methyl) acrylic acid alkylene oxide ester classes such as (methyl) acrylic acid 2-hydroxyethyl ester, (methyl) acrylic acid hydroxypropyl ester, (methyl) hydroxybutyl acrylate; List (methyl) acrylic ester of 6 moles of addition products of oxirane of triethylene glycol list ether list (methyl) acrylic ester, tetraethylene glycol list ether list (methyl) acrylic ester, five glycol monobutyl ether list (methyl) acrylic ester, methoxyl three oxypropylene groups, four oxyethylene groups (methyl) acrylic ester, four propylene glycol etc. are as alkyl ether (methyl) esters of acrylic acid of (methyl) alkyl acrylate of 2～10 moles of addition products of alkylene oxide of monohydroxy alcohol or dibasic alcohol; (methyl) acrylic-amino alkyl esters such as acrylic-amino ethyl ester, diethylaminoethyl methacrylate; (methyl) acrylic amide, α phenyl (methyl) acrylic amide, N-isopropyl (methyl) acrylic amide, uncle's N-octyl group (methyl) acrylic amide, N-n-octyl (methyl) acrylic amide, N-methylol (methyl) acrylic amide, N-methoxy (methyl) acrylic amide, N-ethoxyl methyl (methyl) acrylic amide, N; N '-methylene two ((methyl) acrylic amide), N-diacetone (methyl) acrylic amide, N-(n-butoxy methyl) (methyl) acrylic amide, N; N-dimethylaminopropyl (methyl) acrylic amide N; N-dimethyl (methyl) acrylic amide, N, (methyl) acrylic acid amide compound classes such as N-diethyl (methyl) acrylic amide, (methyl) acryloyl morpholine.
In addition; As can with the material of acrylic monomer copolymerization; Can enumerate alkyl vinyl ethers such as ethyl vinyl ether, propyl vinyl ether, butyl vinyl ether, amyl group vinyl ether, hexyl vinyl ether, 2-ethylhexyl vinyl ether, dodecyl vinyl, octadecyl vinyl ether; The mono-vinyl phenyl ether of 8 moles of addition products of oxirane of tetraethylene glycol monomethyl ether mono-vinyl phenyl ether, five glycol list ether mono-vinyl phenyl ethers, methoxyl five oxypropylene groups four oxyethylene group vinyl phenyl ethers, four propylene glycol etc. as the carbon number of alkylidene be 2～4 polyoxyalkylene monohydroxy alcohol or dibasic alcohol the mono-vinyl phenyl ether contain the aromatic ethenyl ethers; Vinyl esters of carboxylic acids such as vinyl acetate, propionate class; Aromatic vinyl classes such as styrene, p-methylstyrene, o-methyl styrene, a methyl styrene, AMS; 1; Aliphatics conjugated diolefines such as 3-butadiene, isoprene, each end have macromonomers such as the polystyrene, PMA, polymethylmethacrylate, butyl polyacrylate, poly-n-butyl methacrylate, polysiloxane of acryloyl group or methacryl etc.
In the said material; Particularly use when containing acrylic monomer and alkyl vinyl ethers and/or containing the acrylic compounds surfactant of the formed multipolymer of aromatic ethenyl ethers; Wetting dispersion in the time of in can mission in the pixel significantly improves, and is preferred especially.
As making the above-mentioned method that contains the acrylic compounds surfactant of acrylic monomer, can use radical polymerization, the anionic polymerization that uses acid catalyst that in the presence of superoxide or azo compound, carries out, the anionic polymerization that uses alkaline metal class catalyzer etc.
The weight-average molecular weight of passing through gel permeation chromatography (GPC method) gained of aforesaid propylene acids surfactant is preferably 1,000～50,000, more preferably 2,000～5,000.If the effect to the moistening dispersiveness in the pixel is little sometimes less than 1,000, if greater than 50,000 sometimes to the dissolubility variation of solvent.
Through discharging above-mentioned printing ink by the discharge nozzle of ink gun 5 when making color filter; Owing to contain 50～88 weight % solvents; Said solvent has the saturated vapor pressure of 2～200Pa, preferably has the saturated vapor pressure of 2～50Pa under 20 ℃; Because the printing ink discharge rate of discharge nozzle is trace extremely, thus can prevent or reduce interval region with regulation be the printing ink of target in circling in the air, and with hit the unfavorable condition of drying side by side.
In addition; Can prevent or lower following unfavorable condition; Ink setting solidifies during a plurality of discharge nozzles of ink gun 5 stop the printing ink discharging operation; Pile up caused discharge nozzle by the residue thing after solidifying and stop up, the direction of the printing ink that is discharged from that is caused by the residue thing is crooked, and the discharge rate of printing ink is unequal.
Color filter of the present invention for example can be described below and make, but is not limited thereto.
The formation of light shielding part at first, is described.It is that light shield layer, upper strata are for preventing the double-layer structure of liquid layer that light shielding part preferably makes lower floor.Use black resin layer when forming light shield layer, can give photonasty by the corresponding composition that forms this black resin layer, adopt photoetching method to carry out patterning, also can not give photonasty, adopt the photoresist method to carry out patterning.
Explain that the material that uses in the light shield layer is photosensitive situation.In this case, only light shield layer is formed pattern after, will prevent that through appropriate method liquid layer forms pattern, can obtain the BM that is obtained by light shield layer and anti-liquid laminated thus.
Light shield layer preferably uses photosensitive black-colored resin composition to form pattern.Method as coating photosensitive black-colored resin composition on substrate; Can use the method for utilizing spin coater, wire bar applicator, knife type coater, roll coater, chill coating machine, stencil printing etc. on substrate, to be coated with; Substrate impregnated in the method in the coloured composition, coloured composition is sprayed onto the first-class the whole bag of tricks of substrate.
As transparency carrier, not special the qualification can be used glass such as soda-lime glass, alkali-free glass, Pyrex, quartz glass, reaches plastic sheeting, sheet material etc.In addition, can on transparency carrier, be coated with the fusible transparent membrane that improves light shield layer and pixel and transparency carrier as required.As being used to improve fusible transparent membrane,, the bonding force of coloring film and substrate is improved if with bonding agent treatment substrates such as silane coupling agent surface.
Behind painting black resin combination on the substrate, except that desolvating, formation is filmed through air-dry, drying under reduced pressure, heat drying etc. as stated.Afterwards, as required oxygen barrier film can be set on filming.Next on this is filmed, mask is set, uses the exposure device irradiation ultraviolet radiation.Develop with alkaline-based developer subsequently.If use the alkaline-based developer of the surfactants such as nonionic class surfactant added 0.01～1 quality %, then can obtain better pattern, here, so be preferred as developer solution.
The light shield layer of gained be coated with film figure, become and form figuratum light shield layer through carrying out heat treated afterwards.Usually in air, in the blanket of nitrogen or vacuum medium, under 150～300 ℃, preferably under 180～250 ℃ temperature, continuously or stage ground carry out 0.25～5 hour heat treated.
Then, the upper strata of the light shield layer after forming pattern forms anti-liquid layer.As the preferred photosensitive polymer combination of material that uses in the anti-liquid layer, can use in negative type resist, the positive type resist any, but preferably use positive type resist.Under the situation for the positive type resist of anti-fluidity, preferably on the light shield layer after forming pattern, adopt with the identical method of filming that forms light shield layer and form filming of anti-liquid layer, afterwards, carry out so-called back-exposure from the transparent substrate side irradiation ultraviolet radiation.According to said method, can when the exposure resist, not use resist to use mask, therefore the light shield layer self behind the utilization formation pattern need not to make resist with mask and established light shield layer contraposition as mask, and operation obtains simplifying.In making public overleaf in addition; During from the light transmission glass substrate at the back side,, make the resist in the pixel portions that surrounds by light shield layer whole by irradiation all sidedly through the multipath reflection in glass etc.; So all not residual resist residue of the glass of light shield layer side wall surface and pixel portions; Thereby kept the lyophily of BM side wall surface, the lyophily of the glass of pixel portions also is improved, and the result obtains the wetting effect that is scattered in whole pixel of printing ink.
As spendable lamp in the exposure process, can use extra-high-pressure mercury vapour lamp, chemical lamp, high-pressure mercury-vapor lamp, Cooper-Hewitt lamp, ultraviolet LED lamp etc.In addition, as the characteristic of back-exposure mask ground can be set and carry out pattern exposure.
Carry out developing procedure then.Obtain anti-liquid layer be coated with film figure after, become the anti-liquid layer that forms behind the pattern through carrying out heat treated.Usually, in air, in the blanket of nitrogen or vacuum medium, under 150～300 ℃, preferably under 180～250 ℃ temperature, continuously or stage ground carry out 0.25～5 hour heat treated.
On the other hand, the material that in light shield layer, the uses situation as non-photosensitive is described.In this case, owing to can't make light shield layer itself form pattern, so, can obtain forming the light shield layer behind the pattern, but operation is grown, the cost aspect is unfavorable through print process, transfer printing, photoresist method etc. through photoetching process.Therefore; Do not carry out patterning after being preferably formed the filming of light shield layer; Become the photosensitive polymer combination layer of anti-liquid layer above that; Carry out patterning as resist through photoetching process with said photosensitive polymer combination layer, so with this resist pattern as the mask etching light shield layer, carry out patterning.According to this method, can in a photo-mask process, form light shield layer and anti-liquid layer simultaneously.Become the photosensitive polymer combination of anti-liquid layer can negative type resist also can positive type resist.
Then, supply with printing ink through ink gun 5 with a plurality of nozzles.As ink-jet method; Can adopt the piezoelectric element method of ink jet off and on of using; Spray the method that charged printing ink utilizes electric field to control continuously; Heating printing ink utilizes its whole bag of tricks such as method that foam and spray off and on, wherein preferably uses the so-called piezoelectricity mode of piezoelectric element.As using ink discharge device to carry out method of colouring, for example prepare the shower nozzle of R, G, B3 look, spray small droplets of ink from each shower nozzle, make it form color material by the zone that BM surrounded.
If form colored pattern through the just any chromatic number of said method, then can make color filter with the pixel that constitutes by the dyed layer that is set to desirable pattern-like.In addition, chromatic number is any, but preferred R, G, B3 look.
Can form diaphragm, nesa coating etc. as required in addition.Form its not special qualification the such as position, formation order, formation method.As an example, can enumerate on BM and dyed layer and form diaphragm, and then form the structure of nesa coating etc. above that.
Embodiment
Each resin, solvent (in dipropylene glycol n-butyl ether, 2-ethoxyethyl group ether, the propyleneglycol monomethyl acetates at least a), pigment (pigment) are uniformly dispersed with composition separately; Be filled in afterwards (main jar 51 or auxilliary jar 54) in the jar; Make inkjet nozzle work successively with the inking of ormal weight 100 interval regions, confirm to make the dawn pixel count after its air dry in regulation.In addition, measure the diameter that hits when only making a hair oil China ink hit glass substrate, confirm moisture dispersibility.
Need to prove, in the present embodiment, solid state components such as pigment, resin are set among 12 weight %, the 20 weight % any, change the ratio of components of four kinds of solvents, make ink for color filter with being described below with respect to the solid state component of each amount.
With the potpourri of 15 weight portion paratoneres 254, paratonere 177 (80/20) as pigment, 3 weight portion PB821 (Japanese aginomoto fine chemistry Co., Ltd. system) as macromolecule dispersing agent, and 82 weight portion tables 1 in the solvent of record; The mill type dispersion machine that use is filled with the zirconia pearl disperses, and obtains dispersible pigment dispersion.
Then with respect to the said dispersible pigment dispersion of 100 weight portions; Following substances is mixed: after 20 weight portions make methacrylic acid, styrene, methyl methacrylate copolymer; The acrylate copolymer of addition GMA gained (through again the deposition be refined into Powdered; Below note is made polymer A) as polymkeric substance, 5 weight portion epoxy resin " Epikote " 828 (oiling Shell Co. Ltd), 0.2 weight portion " disparlon " LHP-95 (nanmu originally changes into (strain) system) is as the acrylic compounds surfactant; And solvent, regulate making it become the solvent composition and the solid component concentration of record in the table 1.
Then, under 20 ℃ temperature, carry out the inking action.Through adopting said method to go up in the pixel region that the BM that makes and anti-liquid layer patterning obtain at glass substrate Corning1737 (Corning corporate system); Setting main droplet speed is 6.5m/s; The gap of ink gun and nozzle face is set at 0.5mm, in pixel region, discharge 500pL left and right sides printing ink after, air drying 1 hour; 100 ℃ of down preparation heating 10 minutes, afterwards with the number of laser microscope instrumentation dawn and hit diameter.Then, measurement result is shown in table 1.Need to prove that the sample in the his-and-hers watches 1 is given sample number (1) (2) .. by top-down order.
[table 1]
| The dipropylene glycol n-butyl ether | 2-ethoxyethyl group ether | Propyleneglycol monomethyl acetates | Gamma-butyrolacton | Solid state component | Dawn number | Hit diameter | |
| Vapour pressure (20 ℃) | 8Pa | 50Pa | 420Pa | 150Pa | |||
| Surface tension | 28.8mN/m | 32.2 mN/m | 27.4mN/m | 41.4mN/m | |||
| Sample 1 | 80％ | 0％ | 0％ | 0％ | 20％ | 0 | 124μm |
| Sample 2 | 50％ | 30％ | 0％ | 0％ | 20％ | 0 | 109μm |
| Sample 3 | 30％ | 50％ | 0％ | 0％ | 20％ | 0 | 100μm |
| Sample 4 | 0％ | 80％ | 0％ | 0％ | 20％ | 0 | 104μm |
| Sample 5 | 50％ | 0％ | 30％ | 0％ | 20％ | 0 | 98μm |
| Sample 6 | 0％ | 50％ | 30％ | 0％ | 20％ | 0 | 92μm |
| Sample 7 | 0％ | 0％ | 80％ | 0％ | 20％ | 35 | 57μm |
| Sample 8 | 30％ | 0％ | 50％ | 0％ | 20％ | 16 | 72μm |
| Sample 9 | 0％ | 30％ | 50％ | 0％ | 20％ | 21 | 67μm |
| Sample 10 | 88％ | 0％ | 0％ | 0％ | 12％ | 0 | 135μm |
| Sample 11 | 50％ | 38％ | 0％ | 0％ | 12％ | 0 | 111μm |
| Sample 12 | 30％ | 58％ | 0％ | 0％ | 12％ | 0 | 104μm |
| Sample 13 | 0％ | 88％ | 0％ | 0％ | 12％ | 0 | 107μm |
| Sample 14 | 38％ | 50％ | 0％ | 0％ | 12％ | 0 | 104μm |
| Sample 15 | 58％ | 30％ | 0％ | 0％ | 12％ | 0 | 111μm |
| Sample 16 | 58％ | 0％ | 30％ | 0％ | 12％ | 0 | 100μm |
| Sample 17 | 0％ | 58％ | 30％ | 0％ | 12％ | 0 | 94μm |
| Sample 18 | 50％ | 0％ | 38％ | 0％ | 12％ | 0 | 96μm |
| Sample 19 | 0％ | 50％ | 38％ | 0％ | 12％ | 0 | 90μm |
| Sample 20 | 0％ | 0％ | 88％ | 0％ | 12％ | 32 | 57μm |
| Sample 21 | 38％ | 0％ | 50％ | 0％ | 12％ | 10 | 76μm |
| Sample 22 | 0％ | 38％ | 50％ | 0％ | 12％ | 17 | 72μm |
| Sample 23 | 30％ | 0％ | 58％ | 0％ | 12％ | 11 | 76μm |
| Sample 24 | 0％ | 30％ | 58％ | 0％ | 12％ | 19 | 72μm |
| Sample 25 | 70％ | 0％ | 0％ | 10％ | 20％ | 0 | 134μm |
| Sample 26 | 50％ | 0％ | 0％ | 30％ | 20％ | 0 | 131μm |
| Sample 27 | 30％ | 0％ | 0％ | 50％ | 20％ | 0 | 140μm |
| Sample 28 | 10％ | 0％ | 0％ | 70％ | 20％ | 0 | 110μm |
| Sample 29 | 0％ | 0％ | 0％ | 80％ | 20％ | 8 | 78μm |
| Sample 30 | 0％ | 0％ | 30％ | 50％ | 20％ | 4 | 64μm |
| Sample 31 | 30％ | 0％ | 30％ | 20％ | 20％ | 0 | 143μm |
| Sample 32 | 50％ | 0％ | 10％ | 20％ | 20％ | 0 | 148μm |
In sample (1)～(6); Since contain 50～80 weight % the dipropylene glycol n-butyl ether with 8Pa saturated vapor pressure, have the 50Pa saturated vapor pressure 2-ethoxyethyl group ether as solvent; So can know does not have dawn; It is also big to hit diameter, is 92～124 μ m, can know easy wetting dispersion.
In sample (7)～(9); Because the propyleneglycol monomethyl acetates with 420Pa saturated vapor pressure that contains 80 weight % or 50 weight % is as solvent; Have the saturated vapor pressure above 200Pa so become solvent integral body, can know that the dawn number is 35,16,21, it is also little to hit diameter; Be 57～72 μ m, can know to be difficult to wetting dispersion.
In sample (10)～(19); Owing to contain the dipropylene glycol n-butyl ether of 50 weight % or have the 2-ethoxyethyl group ether of 50Pa saturated vapor pressure with 8Pa saturated vapor pressure; Have the saturated vapor pressure that does not surpass 200Pa so become solvent integral body, can know no dawn, it is also big to hit diameter; Be 90～135 μ m, can know easy wetting dispersion.
In sample (20)～(24); Because the propyleneglycol monomethyl acetates with 420Pa saturated vapor pressure that contains 88 weight %, 58 weight % or 50 weight % is as solvent; Have the saturated vapor pressure above 100Pa so become solvent integral body, can know that the dawn number is 32,10,17,11,19, it is also little to hit diameter; Be 57～76 μ m, can know to be difficult to wetting dispersion.
In sample (25)～(28), contain two kinds of solvents, wherein a kind of for surface tension is the gamma-butyrolacton of 41.4mN/m, and another kind is the dipropylene glycol n-butyl ether of 27.4mN/m for surface tension.Vapour pressure all falls in the scope of 2～200Pa, but the vapour pressure of the dipropylene glycol n-butyl ether of the gamma-butyrolacton specific surface tension of surface tension in 35mN/m～45mN/m scope in 20～30mN/m scope is high.As a result, can know no dawn, it is also big to hit diameter, is 110～135 μ m, can know easy wetting dispersion.
In sample (29), (30), solvent only contains that vapour pressure is high slightly to be the gamma-butyrolacton of 150Pa, or only contains gamma-butyrolacton and propyleneglycol monomethyl acetates; Do not contain the dipropylene glycol n-butyl ether; Therefore cause dawn that slightly hitting diameter is 78 μ m, 64 μ m, difficult slightly wetting dispersion becomes.
In sample (31), (32); Except that propylene glycol methyl ether acetate as common solvent; Also contain two kinds of solvents, wherein a kind of for surface tension is the gamma-butyrolacton of 41.4mN/m, and in addition a kind of be the dipropylene glycol n-butyl ether of 27.4mN/m for surface tension.Vapour pressure all falls in the scope of 2～200Pa, but the vapour pressure of the dipropylene glycol n-butyl ether of the gamma-butyrolacton specific surface tension of surface tension in 35mN/m～45mN/m scope in 20～30mN/m scope is high.As a result, can know no dawn, it is also big to hit diameter, is 143 μ m～148 μ m, can know easy wetting dispersion.
In sample (33), (34), use not add the acrylic compounds surfactant or add the printing ink that fluorine class surfactant replaces the acrylic compounds surfactant.All visible some dawns are compared with the situation of sample (32) under any situation, can know that the effect of acrylic compounds surfactant is big.
Can be known that by table 1 solvent that uses saturated vapour to force down more can not produce dawn ground more, fill interval region with printing ink, diameter is also big in can understanding the Decree of Heaven, and is 90～148 μ m, easy wetting dispersion.
Description of drawings
[Fig. 1] is the sketch of an embodiment of the expression color filter manufacturing installation that color filter manufacturing method of the present invention was suitable for.
[Fig. 2] supplies with the sketch of the structure of printing ink to ink gun 5 for expression.
Symbol description
2 glass substrates
5 ink guns
Claims (6)
1. ink for color filter, said printing ink are supplied in through the ink gun (5) with a plurality of discharge nozzles to have light shielding part and by the transparency carrier (2) of said light shielding part interval region at interval, fills said interval region, it is characterized in that,
Said printing ink is made up of solvent, pigment and resinous principle at least,
Said printing ink contains two kinds of solvents that under 20 ℃, have the saturated vapor pressure of 2～200Pa at least, and the content of said solvent in printing ink is 50～88 weight %,
The surface tension of a kind of solvent in said two kinds of solvents is 35～45mN/m, and the surface tension of another kind of solvent is 20～30mN/m,
Wherein, surface tension is that the vapour pressure of the solvent of 35～45mN/m is higher than the vapour pressure that surface tension is the solvent of 20～30mN/m.
2. ink for color filter as claimed in claim 1, the saturated vapor pressure of said two kinds of solvents under 20 ℃ is 2～50Pa.
3. according to claim 1 or claim 2 ink for color filter further contains the acrylic compounds surfactant.
4. color filter manufacturing method; The ink gun (5) of said manufacturing approach through having a plurality of discharge nozzles with inking in having light shielding part and by the transparency carrier (2) of this light shielding part interval region at interval; Fill said interval region with printing ink, it is characterized in that
Said printing ink is made up of solvent, pigment and resinous principle at least,
Said printing ink contains two kinds of solvents that under 20 ℃, have the saturated vapor pressure of 2～200Pa at least, and the content of said solvent in printing ink is 50～88 weight %,
The surface tension of a kind of solvent in said two kinds of solvents is 35～45mN/m, and the surface tension of another kind of solvent is 20～30mN/m,
Wherein, surface tension is that the vapour pressure of the solvent of 35～45mN/m is higher than the vapour pressure that surface tension is the solvent of 20～30mN/m.
5. color filter manufacturing method as claimed in claim 4, wherein, the saturated vapor pressure of said two kinds of solvents under 20 ℃ is 2～50Pa.
6. like claim 4 or 5 described color filter manufacturing methods, wherein, the diameter that hits when only discharging hair oil China ink drop is 80～150 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007043444 | 2007-02-23 | ||
| JP043444/2007 | 2007-02-23 | ||
| PCT/JP2008/053084 WO2008102879A1 (en) | 2007-02-23 | 2008-02-22 | Ink for color filter and method for producing color filter |
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| CN101669046A CN101669046A (en) | 2010-03-10 |
| CN101669046B true CN101669046B (en) | 2012-07-25 |
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| KR (1) | KR20100014792A (en) |
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| JP2010229213A (en) * | 2009-03-26 | 2010-10-14 | Seiko Epson Corp | Colorant composition, colored article and production method of colored article |
| JP6167766B2 (en) * | 2013-08-30 | 2017-07-26 | セイコーエプソン株式会社 | Inkjet recording method |
| KR102677476B1 (en) * | 2016-07-26 | 2024-06-24 | 삼성디스플레이 주식회사 | Etching solution composition and method of manufacturing metal pattern |
| JP6690721B2 (en) * | 2017-07-28 | 2020-04-28 | 東レ株式会社 | Color conversion composition, color conversion film and light source unit, display and illumination including the same |
| CN110231672B (en) * | 2018-02-28 | 2021-08-10 | 张家港康得新光电材料有限公司 | Preparation method and preparation system of optical filter module |
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| JP3049592B2 (en) * | 1995-12-07 | 2000-06-05 | 富士ゼロックス株式会社 | Ink jet recording ink and ink jet recording method |
| JP2005154544A (en) * | 2003-11-25 | 2005-06-16 | Fuji Photo Film Co Ltd | Pigment, ink, inkjet recording method, ink sheet, color toner and color filter each using the same |
| JP4742648B2 (en) * | 2005-03-31 | 2011-08-10 | 大日本印刷株式会社 | Ink-jet ink for color filter and method for producing the same, method for producing color filter, and method for producing liquid crystal display device |
| CN1884402B (en) * | 2005-06-24 | 2010-04-14 | 虹创科技股份有限公司 | Color filter ink and color filter preparation method |
| JP4049194B2 (en) * | 2006-06-26 | 2008-02-20 | セイコーエプソン株式会社 | Color filter |
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2008
- 2008-02-22 TW TW097106421A patent/TW200848803A/en unknown
- 2008-02-22 JP JP2009500253A patent/JPWO2008102879A1/en active Pending
- 2008-02-22 WO PCT/JP2008/053084 patent/WO2008102879A1/en active Application Filing
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| JP特开2002-62422A 2002.02.28 |
| JP特开2006-284752A 2006.10.19 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100014792A (en) | 2010-02-11 |
| CN101669046A (en) | 2010-03-10 |
| WO2008102879A1 (en) | 2008-08-28 |
| JPWO2008102879A1 (en) | 2010-05-27 |
| TW200848803A (en) | 2008-12-16 |
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