CN101533116A - Color filter manufacturing method and ink for color filter - Google Patents
Color filter manufacturing method and ink for color filter Download PDFInfo
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- CN101533116A CN101533116A CN200910126376A CN200910126376A CN101533116A CN 101533116 A CN101533116 A CN 101533116A CN 200910126376 A CN200910126376 A CN 200910126376A CN 200910126376 A CN200910126376 A CN 200910126376A CN 101533116 A CN101533116 A CN 101533116A
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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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- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0005—Curl smoothing, i.e. smoothing down corrugated printing material, e.g. by pressing means acting on wrinkled printing material
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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
- C09D11/322—Pigment inks
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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
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
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- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Optical Filters (AREA)
- Liquid Crystal (AREA)
- Printing Methods (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to a color filter manufacturing method and an ink for color filter. The color filter manufacturing method is characterized in that more than three kinds of inks (4, 8, 11) with mutually different colors are printed on a transparent substrate (5) in turn, the inks contain glue resin, colorant, thixotropic imparting agent and solvent with the weight average molecular weight of 7000 to 30000, the viscosity etha 1 is 10 to 20 Pa.s when the shearing velocity is 1 s<-1>, and the ratio etha 1/etha 12 (thixotropic index TI) of the viscosity etha 1 to the viscosity etha 12 (Pa.s) when the shearing velocity is 12 s<-1> is 1.1 to 17; and then, the ink patterns (6, 9, 12) on the transparent substrate (5) are planarized and solidified, thereby forming the color layer of the color filter.
Description
Technical field
The present invention relates to the manufacture method of color filter, and use therein ink for color filter.
Background technology
The color filter that uses in the LCD has transparency carrier and the redness that forms on its surface, green and blue three looks or has for example added four looks of yellow therein or further added the dyed layer of the five colors of cyan.
This dyed layer wishes that from the viewpoint of the image quality of LCD the uneven thickness (the height plane difference on dyed layer surface) that has an even surface between (outer edge of dyed layer and the film thickness difference of central portion are little), the dyed layer of dyed layer is little.
In addition, in recent years,, proposed behind the ink logo that printing on the transparency carrier is formed by coloring printing ink, this ink logo to be solidified to form the method for dyed layer as the manufacture method of color filter.And then, in order to make the flattening surface of dyed layer, proposed the ink logo on the transparency carrier to be carried out pressurized treatments (patent documentation 1) with roller.
Patent documentation 1: the spy opens flat 8-75914 communique
Summary of the invention
Yet according to the difference of the colorant that is cooperated etc., viscosity, thixotropy that dyed layer forms with printing ink are also different, produce difference aspect printing characteristic.
Therefore, might be owing to dyed layer forms the live width inequality that produces ink logo with the difference of printing ink.In addition, the inequality of ink logo live width can cause and the ink logo of adjacency between the inequality in gap, and then, when the planarization of ink logo, produce entanglement at abutting part, thereby become the reason that produces the unfavorable condition of printing ink colour mixture and so in pixel openings portion with the ink logo of adjacency.
On the other hand, as the method that suppresses to form the live width inequality of the ink logo that is caused with the printing ink difference, for example, can enumerate the method for dilute strength of molecular weight, the printing ink of adhesive resin contained in the adjustment printing ink because of dyed layer.Yet in these methods, the difference of the ink solidification characteristics such as shrinkage degree of the ink logo that accompanies with curing becomes significantly, and the thickness between the dyed layer produces uneven, produces impaired and so on the unfavorable condition of the flatness of dyed layer.
The object of the present invention is to provide the manufacture method of the color filter of the live width that can suppress between the mutually different dyed layer of color, uneven thickness, and be adapted at the ink for color filter that uses in the manufacture method of this color filter.
To achieve these goals, the manufacture method of color filter of the present invention, it is characterized in that, the mutually different printing ink more than three kinds of color is printed on the transparency carrier successively, then, with the ink logo planarization that forms by each above-mentioned printing ink that is formed on the above-mentioned transparency carrier, and then, above-mentioned ink logo is solidified to form dyed layer, and it is 7000～30000 adhesive resin, colorant, thixotropy imparting agent and solvent that described printing ink contains weight-average molecular weight, and shear rate is 1s
-1The time viscosities il
1Being 10～20Pas, is 1s by shear rate
-1The time viscosities il
1(Pas) be 12s with shear rate
-1The time viscosities il
12(Pas) ratio is η
1/ η
12The thixotropy index TI of expression is 1.1～1.7.
According to this method, can between the mutually different printing ink of color, obtain the balance of printing characteristic and curing characteristics, and form the live width and the uneven thickness dyed layer that be inhibited, that have an even surface of pattern.
In foregoing invention, preferably print described printing ink with hectographic printing method or reverse printed method.
By printing with hectographic printing method or reverse printed method, the printing precision of ink logo improves, and can form the minimum dyed layer of live width accurately, therefore can make the high color filter of image quality.
In foregoing invention, preferably between each described printing ink, the difference of the weight-average molecular weight of described adhesive resin is below 17500.
Be set in above-mentioned scope by difference, can adjust the balance of the curing characteristics between the mutually different printing ink of color, can suppress the live width of dyed layer and the inequality of thickness thus the weight-average molecular weight of adhesive resin.
In foregoing invention, preferably the difference of the described thixotropy index TI between each described printing ink is below 0.40.
Be set in above-mentioned scope by difference, can between the mutually different printing ink of color, obtain the balance of printing characteristic, can suppress the live width of dyed layer and the inequality of thickness thus thixotropy index TI.
In addition, ink for color filter of the present invention is characterized in that, contain weight-average molecular weight and be 7000～30000 adhesive resin, colorant, thixotropy imparting agent and solvent, and shear rate is 1s
-1The time viscosities il
1Being 10～20Pas, is 1s by shear rate
-1The time viscosities il
1(Pas) be 12s with shear rate
-1The time viscosities il
12(Pas) ratio is η
1/ η
12The thixotropy index TI of expression is 1.1～1.7.
As the mutually different printing ink more than three kinds of the color that is used to form the color filter dyed layer,, can between the mutually different printing ink of color, obtain the balance of printing characteristic and curing characteristics by using above-mentioned ink for color filter.And then, can form thus have an even surface, dyed layer that the inequality of live width and thickness is inhibited.
According to the manufacture method and the ink for color filter of color filter of the present invention,, therefore can obtain the high color filter of image quality owing to can suppress the live width between the mutually different dyed layer of color and the inequality of thickness.
Description of drawings
Fig. 1 (a)～(d) is a kind of embodiment of color filter manufacture method, is that expression adopts gravure offset to form the schematic illustration of the situation of dyed layer.
Fig. 2 (a)～(c) is other embodiments of color filter manufacture method, is that expression adopts the reverse printed method to form the schematic illustration of the situation of dyed layer.
Symbol description
3... transparency carrier, 4... ink logo (green), 6... ink logo (blueness), 8... ink logo (redness), 9... roller
Embodiment
In the manufacture method of color filter of the present invention, at first, the mutually different printing ink more than three kinds of color is printed on the transparency carrier successively, and it is 7000～30000 adhesive resin, colorant, thixotropy imparting agent and solvent that described printing ink contains weight-average molecular weight.
The weight-average molecular weight of the adhesive resin that above-mentioned printing ink is contained is 7000～30000.Wherein, the weight-average molecular weight of adhesive resin is the value (down together) that obtains by the normal polyethylene conversion that adopts gel permeation chromatography (GPC) method to measure.
The weight-average molecular weight of adhesive resin as described later, is 1s by the shear rate with each color ink further when above-mentioned scope
-1The time viscosities il
1TI is set in described scope with the thixotropy index, can obtain the balance of the printing characteristic and the curing characteristics of each color ink.
On the other hand, the weight-average molecular weight of adhesive resin is difficult to the viscosity of printing ink, the scope that thixotropy is set in regulation outside above-mentioned scope the time.And then, the weight-average molecular weight of adhesive resin is outside above-mentioned scope the time, for example, when forming ink logo with the hectographic printing method, it is bad to be easy to generate transfer printing from blanket during to the transparency carrier transfer printing to blanket (blanket) transfer printing and printing ink from galley at printing ink, in addition, and when forming ink logo with the reverse printed method, be easy to generate when removing printing ink on the blanket with embossing plate and remove badly, printing ink is easy to generate transfer printing when blanket is transferred to transparency carrier bad.
The weight-average molecular weight of adhesive resin is in the above range, and is preferred 7000～23000, and further preferred 7500～20000.
In addition, the weight-average molecular weight of adhesive resin is not greatly not simultaneously between the mutually different printing ink of color, the pattern volume reduction that accompanies with the curing of printing ink, calcining is different greatly different because of printing ink, and live width that thus might dyed layer, the inequality of thickness become remarkable.
Therefore, in the manufacture method of above-mentioned color filter, be set at the difference of the weight-average molecular weight of the adhesive resin between the mutually different printing ink of color as much as possible little.Particularly, the difference of the weight-average molecular weight of the adhesive resin between the mutually different printing ink of color is preferably below 17500, further preferably below 15000, particularly preferably in below 12500.
As adhesive resin, can enumerate the various resins that use in the dyed layer of color filter.Wherein, preferred polyester-melamine resin, vibrin, acryl resin, melamine resin, polyimide resin, polyamide, epoxy resin, epoxy-melamine resin etc., especially preferred polyester-melamine resin.
Polybasic carboxylic acid as the polyester portion that is used to form above-mentioned polyester-melamine resin, above-mentioned vibrin, can enumerate for example saturated dicarboxylic acid such as hexane diacid, heptandioic acid, suberic acid, azelaic acid, decanedioic acid, phthalic acid, m-phthalic acid, terephthalic acid (TPA), for example unsaturated dicarboxylics such as maleic acid, fumaric acid, itaconic acid, citraconic acid, for example tricarboxylic acids such as trimellitic acid etc.These polybasic carboxylic acids can be acid anhydrides.In addition, these polybasic carboxylic acids can use separately, can also be use mixing two or more.
In addition, polyvalent alcohol as the polyester portion that is used to form above-mentioned polyester-melamine resin, above-mentioned vibrin, can enumerate for example ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol, 1,3-butylene glycol, tetramethylene glycol, hexamethylene glycol, neopentyl glycol, 1, the glycol such as alkane diol of 4-cyclohexanedimethanol, carbon number 11～15 can be enumerated the above alcohol of ternary such as trimethylolpropane, pentaerythrite for example etc.These polyvalent alcohols can use separately, can also be use mixing two or more.
Want suitably to adjust the rerum natura of polyester-melamine resin, vibrin, unqualified to it, use but preferably two or more polybasic carboxylic acids and two or more polyvalent alcohols are mixed.In addition, in above-mentioned polybasic carboxylic acid, preferred especially hexane diacid, phthalic acid.In above-mentioned polyvalent alcohol, preferred especially ethylene glycol.
As the melamine-modified employed melamine of vibrin, can enumerate methylol melamine derivant for example, through methylolated acetylguanamine, methyl etherified melamine, butyl etherificate melamine, through mixed alkyl etherificate melamine of methyl etherified and butyl etherificate etc.
As the contained colorant of above-mentioned printing ink, can be set forth in the various colorants that use in the manufacturing of color filter dyed layer, can suitably select according to the desired tone of printing ink (tone of dyed layer).Usually, the dyed layer of color filter uses the three primary colors of red, blue and green so-called light, and the colorant of therefore suitably selecting to be suitable for to prepare red ink, blue ink and green ink gets final product.In addition, except the dyed layer of red, blue and green this three look, when forming the dyed layer of yellow, cyan, the colorant of suitably selecting to be suitable for to prepare Yellow ink and cyan ink gets final product.
It should be noted that as colorant to be not particularly limited, can enumerate the pigment of color index name for example as follows.
Red ink pigment: for example, red colour system pigment such as C.I. paratonere 19, C.I. pigment red 38, C.I. pigment red 43, C.I. pigment Red 88, C.I. pigment red 122, C.I. pigment red 123, C.I. paratonere 144, C.I. pigment red 149, C.I. paratonere 166, C.I. paratonere 168, C.I. paratonere 177, C.I. paratonere 179, C.I. paratonere 208, C.I. pigment red 21 6, C.I. paratonere 226, C.I. paratonere 245.
These red colour system pigment can separately or be use mixing two or more.In addition, in order to adjust tone, can cooperate for example C.I. pigment yellow 81 with above-mentioned red colour system pigment, C.I. pigment yellow 83, C.I. pigment yellow 97, C.I. pigment yellow 108, C.I. pigment yellow 109, C.I. pigment yellow 110, C.I. pigment yellow 13 7, C.I. pigment yellow 13 8, C.I. pigment yellow 13 9, C.I. pigment yellow 153, C.I. pigment yellow 154, C.I. pigment yellow 166, C.I. pigment yellow 168, C.I. yellow series pigments such as pigment yellow 185 grades, C.I. pigment violet 19, C.I. pigment Violet 23, C.I. pigment violet 29, C.I. pigment violet 30, C.I. pigment violet 37, C.I. violet pigment such as pigment violet 88 etc., preferred especially at above-mentioned red ink as the C.I. of diketopyrrolopyrrolecocrystals series pigments red 245 with in the pigment.
Green ink pigment: for example, green series pigments such as C.I. pigment Green 7, C.I. pigment green 36.
These green series pigments can separately or be use mixing two or more.In addition, in order to adjust tone, can cooperate above-mentioned yellow series pigments etc. with above-mentioned green series pigments.Use in the pigment preferred especially C.I. pigment green 36 as the copper halide phthualocyanine pigment at above-mentioned green ink.
Blue ink pigment: for example, C.I. pigment blue 15: 1, C.I. pigment blue 15: 3, C.I. pigment blue 15: 4, C.I. pigment blue 15: 6, blue series pigments such as C.I. pigment blue 16, C.I. alizarol saphirol 22, C.I. alizarol saphirol 29, C.I. pigment blue 60, the perhaps potpourri of these blue series pigments and above-mentioned violet pigment.
These blue series pigments and violet pigment can separately or be use mixing two or more.In addition, in order to adjust tone, can cooperate above-mentioned violet pigment etc. with above-mentioned blue series pigments.Use in the pigment preferred especially C.I. pigment blue 15: 6 as the copper phthalocyanine series pigments at above-mentioned blue ink.
Yellow ink pigment: for example, yellow series pigments such as C.I. pigment yellow 81, C.I. pigment yellow 83, C.I. pigment yellow 97, C.I. pigment yellow 108, C.I. pigment yellow 109, C.I. pigment yellow 110, C.I. pigment yellow 13 7, C.I. pigment yellow 13 8, C.I. pigment yellow 13 9, C.I. pigment yellow 153, C.I. pigment yellow 154, C.I. pigment yellow 166, C.I. pigment yellow 168, C.I. pigment yellow 185.
Cyan ink pigment: for example, copper phthalocyanine series pigments such as C.I. pigment 15:3, C.I. pigment 15:4.
The viscosity of the desired color of use level consideration printing ink of colorant, the transmittance of dyed layer, printing ink and thixotropy wait suitably to be set.Therefore be not particularly limited, with respect to adhesive resin 100 weight portions, be preferably 20～120 weight portions usually, more preferably 25～100 weight portions are preferably 30～90 weight portions especially.
Contained thixotropy (thixotropy) imparting agent of above-mentioned printing ink is the composition that is called as rheological imparting agent, thixotropy promoter etc., in order to make above-mentioned printing ink present thixotropy and to cooperate.In addition, the thixotropy imparting agent is general according to the composition that becomes the printing ink that presents the thixotropy object, especially suitably selects according to the adhesive resin of printing ink, the kind of pigment.
Adhesive resin at printing ink uses under the situation of polyester-melamine resin, vibrin, as the thixotropy imparting agent, unqualified to it, can enumerate for example rheological imparting agent of BYK-CHEMIE JAPAN Co., Ltd., " BYK-R606 " of trade name " BYK-R605 ", same company; The pyrolytic silicon dioxide of for example Japanese AEROSIL Co., Ltd., " AEROSIL (R) R202 " of trade name " AEROSIL (R) 200 ", same company; Trade name of Rohm andHaas company " RM-825 " etc. for example.
The use level of thixotropy imparting agent is considered the viscosity of printing characteristic, especially printing ink of printing ink and thixotropy etc., and suitably sets according to the use level of pigment.The use level of thixotropy imparting agent is preferably 0.1～5.0 weight % of pigment use level, and more preferably 0.2～4.0 weight % is preferably 0.3～3.0 weight % especially.
As the contained solvent of above-mentioned printing ink, can enumerate for example alcohols such as 1-propyl alcohol, 2-propyl alcohol, butanols, amylalcohol, hexanol, enanthol, octanol, nonyl alcohol, decyl alcohol, hendecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, octadecanol, ceryl alcohol, cyclohexanol, 2 methyl cyclohexanol; Glycolss such as ethylene glycol, propylene glycol, diethylene glycol for example; For example ethylene glycol monobutyl ether (another name: butyl cellosolve), ethyleneglycol monophenylether, diethylene glycol monoethyl ether (another name: carbitol), diethylene glycol monobutyl ether (another name: butyl carbitol), cellosolve acetic acid esters, butyl cellosolve acetate, carbitol acetic acid esters, butyl carbitol acetate (another name: acetate of butyl carbitol, BCA) wait alkyl ether; Arenes such as toluene, dimethylbenzene, tetralin for example; Ketones such as cyclohexanone, methyl cyclohexanone, isophorone, diacetone alcohol for example; Ester classes such as ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, propylene glycol methyl ether acetate (PGMEA), ethylene glycol monoethyl ether acetate, ethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetic acid esters for example; For example acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone ketones such as (MIBK); Glycols such as ethylene glycol, propylene glycol for example; Glycol ethers such as propylene glycol monomethyl ether (PGME), dihydroxypropane single-ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether for example; The organic solvent of methylcyclohexane, toluene, dimethylbenzene, SOLVESO 100 (Exxon Kagaku Co., the trade name of Ltd), SOLVESO 150 hydro carbons such as (Exxon Kagaku Co., the trade names of Ltd) etc. for example.
These solvents can use separately, perhaps are use mixing two or more.
As the preference of solvent,, can enumerate higher alcohols such as decyl alcohol, tridecanol, pentadecanol from the drying property of improving printing ink, the viewpoint of printing the balance of adaptability (printing ink transfer printing etc.), flatness.In addition, when using these higher alcohols, for drying property, the flowability of adjusting printing ink, can also and with the rate of drying butyl carbitol faster, butyl cellosolve, ethyl carbitol, butyl cellosolve acetate, acetate of butyl carbitol (BCA), terpilenol etc. than higher alcohol.
In addition, from the viewpoint of the printing adaptability of printing ink etc., solvent can use glycol series solvents such as BCA, butyl carbitol, butyl cellosolve, ethyl carbitol, butyl cellosolve acetate separately, perhaps their is mixed mutually and uses.
The use level of solvent is that the balance of considering the printing characteristic (the especially viscosity of printing ink and thixotropy) of the dispersiveness of compositions such as adhesive resin, colorant, printing ink, the volatilization loss of weight between each color ink waits suitably and sets.Therefore, though be not particularly limited, with respect to adhesive resin 100 weight portions, be preferably 15～350 weight portions usually, more preferably 20～300 weight portions are preferably 25～100 weight portions especially.
Wherein, use as solvent under the situation of glycol series solvents such as BCA use weight-average molecular weight to be set in the polyester-melamine resin, vibrin of above-mentioned scope as adhesive resin, solvent is preferably 15～100 weight portions with respect to the use level of adhesive resin 100 weight portions, more preferably 20～50 weight portions are preferably 25～40 weight portions especially.
In addition, solvent contain proportional 10～45 weight % that are preferably total ink, more preferably about 12～25 weight %, be preferably especially about 14～22 weight %.
In addition, between the mutually different printing ink of color solvent contain that proportional the pattern volume reduction that accompanies with the curing of printing ink, calcining is different greatly different because of printing ink greatly not simultaneously, live width that thus might dyed layer, the inequality of thickness become remarkable.
Therefore, in the manufacture method of above-mentioned color filter, be set at containing of the solvent between the mutually different printing ink of color proportional (solvent in total ink contain proportional (%)) as much as possible little.Particularly, the solvent between the mutually different printing ink of color contains proportional difference preferably below 15 percentage points, further preferably below 10 percentage points.
Therefore above-mentioned printing ink be 1s with shear rate owing to obtain the balance of the printing characteristic between the mutually different printing ink of color
-1The time viscosities il
1Be set at 10～20Pas, and will be 1s by shear rate
-1The time viscosities il
1(Pas) be 12s with shear rate
-1The time viscosities il
12(Pas) ratio is η
1/ η
12The thixotropy index TI of expression is set at 1.1～1.7.
Wherein, shear rate is 1s
-1The time viscosities il
1(Pas) and shear rate be 12s
-1The time viscosities il
12(Pas) all be measure with cone-plate type rotational viscosimeter (cone plate type, BROoKFIELD company makes), in 23 ℃ measured values (down with).In addition, the thixotropy index TI of printing ink is to be 1s by shear rate
-1The time viscosities il
1(Pas) be 12s with shear rate
-1The time viscosities il
12(Pas) ratio is η
1/ η
12The value of expression is the thixotropic index of expression printing ink.
The shear rate of printing ink is 1s
-1The time viscosities il
1, above-mentioned thixotropy index TI when above-mentioned scope, further the weight-average molecular weight with adhesive resin is set in the specialized range, can obtain the balance of the printing characteristic and the curing characteristics of each color ink.
On the other hand, the shear rate of printing ink is 1s
-1The time viscosities il
1During less than 10Pas, the shape of printed patterns produces entanglement, and the marginal portion of pattern produces burr etc.Otherwise the shear rate of printing ink is 1s
-1The time viscosities il
1During greater than 20Pas, the printing characteristic of printing ink reduces, the transfer printing reduction of the surface of ink logo, printing ink.
The shear rate of printing ink is 1s
-1The time viscosities il
1Preferred in the above range 12～18Pas.
It should be noted that the shear rate for printing ink is 12s
-1The time viscosities il
12Unqualified, from thixotropy index TI being set in the viewpoint of suitable scope, be preferably 20～300Pas, further preferred 50～250Pas.
In addition, thixotropy index TI is less than 1.1 o'clock, and when printing or during the planarization of ink logo, the flowability of printing ink becomes too high, so the printing precision of fine pattern reduces.Otherwise thixotropy index TI was greater than 1.7 o'clock, and when the planarization of ink logo, the effect of planarization reduces.
Thixotropy index TI preferred in the above range 1.2～1.6.
In the viscosity and thixotropic scope of harmless printing ink, can in above-mentioned printing ink, suitably cooperate for example other compositions such as spreading agent, extender pigment, defoamer, thixotropy imparting agent.
As spreading agent, can enumerate and for example be mainly used in the composition that improves the dispersiveness of colorant in printing ink.Particularly, as such spreading agent, can enumerate for example macromolecular pigment dispersing agent of AJINOMOTOFINE-TECHNO Co., Ltd. system, trade name " AJISPER " series; The pigment dispersing agent of Avecia corporate system for example, trade name " Solsperse " series; The spreading agent of Kyoeisha Chemical Co., Ltd.'s system, trade name " FLOWLEN " series etc.
In the manufacture method of color filter of the present invention, the mutually different printing ink more than three kinds of color is coated after the transparency carrier successively, will be formed at the ink logo planarization on transparency carrier surface, and be cured.Like this, make the color filter that possesses transparency carrier and be formed at its surperficial dyed layer.
Above-mentioned printing ink uses hectographic printing method, reverse printed method when transparency carrier prints.
The hectographic printing method for example can be enumerated intaglio offset, offset lithographic etc. corresponding to the various printing processes of galley form.The printing process of these hectographic printings is not particularly limited, but from the viewpoint of the fine pattern that forms dyed layer accurately, preferred intaglio offset.
The employed intaglio plate of intaglio offset, blanket, offset printing appts etc. can suitably select to adopt known use the in the color filter manufacture method of hectographic printing.
Therefore, unqualified to this, for example,,, preferably use printing ink to support the silicone rubber cloth that face is formed by silicone rubber from form viewpoint with high printing precision corresponding to the ink logo of fine dyed layer as blanket.In addition, as supporting the base material that printing ink supports face, can enumerate the film of the system of polyethylene terephthalate (PET) for example etc.
As the formation material of intaglio plate, can enumerate for example glass, metal etc.In addition, for example, can be that recess is set on substrates such as glass, and form the material (so-called " plating intaglio plate ") of metal tunicle by electrochemical plating on the surface of this recess.
Being printed on when adopting gravure offset of above-mentioned printing ink, the cross sectional shape of the ink logo on the transparency carrier (for example becomes circle in a side opposite with the surface of contact of transparency carrier, cross sectional shape on transparency carrier becomes semicircle), therefore for the flatness that makes ink logo improves, must carry out the planarization of ink logo.
Being used for the planarizing unit with the ink logo planarization, is to be pressed on the ink logo surface that is formed on the transparency carrier, the parts that have an even surface that make this ink logo, for example, can enumerate roller.
Be used for the roller with the ink logo planarization, can enumerate: for example the sheet element that will be formed by the material (printing ink release property material) of printing ink release property excellence (for example silicone rubber sheet etc.) is wound on the material of making the roller shape on the core; For example dispose the core that runs through above-mentioned bottom and extend along the axis that round-ended cylinder shape container is arranged, and around above-mentioned core direct pouring printing ink release property material (for example aqueous silicone rubber etc.), make it to solidify, above-mentioned printing ink release property material is made the material of roller shape etc.
As printing ink release property material, can enumerate for example silicone rubber, silicone-based elastic body, silicone resin, fluororesin etc., the little starting material of surface free energy (critical surface tension).
When using roller as planarizing unit, the crimping condition as the ink logo surface of adopting this roller is not particularly limited, and for example can enumerating, the pressure (so-called cramping) of roller and ink logo joining part is preferably 1～50kg/cm
2, further preferred 2～20kg/cm
2, at the preferred 5～100mm/ of the rotational speed of ink logo top roll minute.
The printing ink that is equivalent to non-setting-out portion position of the printing ink tunicle that reverse printed is used blanket, intaglio plate or relief printing plate (embossing plate), reverse printed device etc., described intaglio plate or relief printing plate to be used for removing to form on this blanket surface.These blankets, embossing plate, reverse printed device etc. can suitably select to adopt known use the in the color filter manufacture method of reverse printed.
It should be noted that as blanket to be not particularly limited, for example, preferably with intaglio offset in the same silicone rubber cloth of blanket that uses.
In addition, be not particularly limited, can enumerate for example glass, metal etc. as the formation material of embossing plate.In addition, can be set forth on the substrate such as glass recess, protuberance are set, and form the material of metal tunicle by electrochemical plating on the surface of this recess and protuberance.
It should be noted that and when the reverse printed method is adopted in the printing of above-mentioned printing ink,, therefore need not the planarization of ink logo because the cross sectional shape of the ink logo on transparency carrier is a rectangular shape.
Be printed on the transparency carrier surface, carried out the ink logo of planarization as required, further, usually 200～250 ℃, more preferably 220～240 ℃ and usually 10～40 minutes, more preferably heat under 20～30 minutes the condition, thereby solidify.So obtain having the color filter of dyed layer on the transparency carrier surface.
Manufacture method according to color filter of the present invention, for example, before the curing of printing ink is handled, form about wide 30～160 μ m, under the situation of the ink logo of the fine striated about thick 1.0～10.0 μ m, the maximal value of poor (inequality) of the printing live width (before the ink solidification) in identical candy strip preferably can be set in below the 0.3 μ m, can more preferably be set in below the 0.1 μ m.
In addition, manufacture method according to color filter of the present invention, for example, after the curing of printing ink is handled, with the mutually different printing ink more than three kinds of color form about wide 80～120 μ m, under the situation of the ink logo of fine striated about thick 1.9～2.2 μ m, the maximal value of poor (inequality) of the printing live width (before the ink solidification) between the mutually different ink logo of color preferably can be set in below the 0.1 μ m, can more preferably be set in below the 0.05 μ m.And then, in this case, the maximal value of poor (inequality) of the pattern thickness (before the ink solidification) between the mutually different ink logo of color preferably can be made as below the 0.15 μ m, can more preferably be set in below the 0.1 μ m.
Fig. 1 (a)～Fig. 1 (d) is an embodiment of the manufacture method of color filter, is that expression adopts gravure offset to form the schematic illustration of the situation of dyed layer.
In the manufacture method of this color filter, at first, shown in Fig. 1 (a), by rotating printing rubber blanket 2 along the surface of the 1st intaglio plate 1, be transferred to the surface of printing rubber blanket 2 with being filled in the 1st printing ink 4 in the recess 3 of the 1st intaglio plate 1.And then the printing rubber blanket 2 by transfer printing there being the 1st printing ink 4 rotates along the surface of transparency carrier 5, with the surface of the 1st printing ink 4 from the surface transfer of printing rubber blanket 2 to transparency carrier 5, forms the ink logo 6 (the 1st printing process) of the 1st look.
Then, shown in Fig. 1 (b), by rotating printing rubber blanket 2 along the surface of the 2nd intaglio plate 7, be transferred to the surface of printing rubber blanket 2 with being filled in the 2nd printing ink 8 in the recess 3 of the 2nd intaglio plate 7.And then the printing rubber blanket 2 by transfer printing there being the 2nd printing ink 8 rotates along the surface of transparency carrier 5, with the surface of the 2nd printing ink 8 from the surface transfer of printing rubber blanket 2 to transparency carrier 5, forms the ink logo 9 (the 2nd printing process) of the 2nd look.
And then, shown in Fig. 1 (c), by rotating printing rubber blanket 2 along the surface of the 3rd intaglio plate 10, be transferred to the surface of printing rubber blanket 2 with being filled in the 3rd printing ink 11 in the recess 3 of the 3rd intaglio plate 10.And then the printing rubber blanket 2 by transfer printing there being the 3rd printing ink 11 rotates along the surface of transparency carrier 5, with the surface of the 3rd printing ink 11 from the surface transfer of printing rubber blanket 2 to transparency carrier 5, forms the ink logo 12 (the 3rd printing process) of the 3rd look.
Like this, after the surface of transparency carrier 5 forms the mutually different three color ink patterns 6,9,12 of color, shown in Fig. 1 (d), compress roller 13 limits along the Surface Edge of three color ink patterns 6,9,12 and rotate, thus with three color ink patterns, 6,9,12 planarizations (planarization operation).
Then, calcining makes it to solidify through three color ink patterns 6,9,12 of planarization, obtains having the color filter of the mutually different three chromatic colorant layers of color thus.
As mutually different three color inks of color, use red, green and three blue color inks usually.The print order of these three color inks is not particularly limited, and considers the drying property of printing ink etc. usually, begins to print successively from being difficult for dry printing ink.
In addition, as dyed layer, when forming the ink logo of other colors, further above-mentioned printing process is appended the intaglio plate of using from other color ink patterns and get final product to the printing process that transparency carrier carries out the printing ink transfer printing with above-mentioned three color ink patterns.
Fig. 2 (a)～Fig. 2 (c) is other embodiments of the manufacture method of color filter, is that expression adopts the reverse printed method to form the schematic illustration of the situation of dyed layer.
In the manufacture method of this color filter, at first, shown in Fig. 2 (a), to be formed with the printing rubber blanket 2 of the tunicle of the 1st printing ink 4 at outer peripheral face, rotate on surface along the 1st embossing plate 14, the coated face of the 1st printing ink 4 is squeezed on the protuberance 15 of the 1st embossing plate 14, will be transferred on the protuberance 15 with the 1st printing ink 4 of these protuberance 15 contact portions thus, remove from the surface of printing rubber blanket 2.Like this, form the ink logo 6 of the 1st look that forms by the 1st printing ink 4, follow, the ink logo 6 of the 1st look is transferred to the surface (the 1st printing process) of transparency carrier 5 at the outer peripheral face of printing rubber blanket 2.
Then, shown in Fig. 2 (b), to rotate along the surface of the 2nd embossing plate 16 at the printing rubber blanket 2 that outer peripheral face is formed with the tunicle of the 2nd printing ink 8, the coated face of the 2nd printing ink 8 is squeezed on the protuberance 17 of the 2nd embossing plate 16, to be transferred on the protuberance 17 with the 2nd printing ink 8 of these protuberance 17 contact portions thus, remove from the surface of printing rubber blanket 2.Like this, form the ink logo 9 of the 2nd look that forms by the 2nd printing ink 8, follow, the ink logo 9 of the 2nd look is transferred to the surface (the 2nd printing process) of transparency carrier 5 at the outer peripheral face of printing rubber blanket 2.
And then, shown in Fig. 2 (c), to rotate along the surface of the 3rd embossing plate 18 at the printing rubber blanket 2 that outer peripheral face is formed with the tunicle of the 3rd printing ink 11, the coated face of the 3rd printing ink 11 is squeezed on the protuberance 19 of the 3rd embossing plate 18, to be transferred on the protuberance 19 with the 3rd printing ink 11 of these protuberance 19 contact portions thus, remove from the surface of printing rubber blanket 2.Like this, form the ink logo 12 of the 3rd look that forms by the 3rd printing ink 11, follow, the ink logo 12 of the 3rd look is transferred to the surface (the 3rd printing process) of transparency carrier 5 at the outer peripheral face of printing rubber blanket 2.
Then, calcining is needed on the three color ink patterns 6,9,12 on transparency carrier 5 surfaces, makes it to solidify, and obtains having the color filter of the mutually different three chromatic colorant layers of color thus.
According to the manufacture method and the ink for color filter of color filter of the present invention, can obtain the printing characteristic between the mutually different printing ink of color and the balance of curing characteristics, can form high-precision dyed layer by hectographic printing, reverse printed.
Therefore, the present invention is suitable for making the purposes of the color filter that the high LCD of image quality uses.
Embodiment
Then, embodiment and the comparative example of enumerating the manufacture method of the preparation example of ink for color filter and comparative preparation example and color filter illustrate the present invention, but the present invention is not limited to following preparation example and embodiment.
The preparation of＜ink for color filter 〉
The employed adhesive resin of preparation ink for color filter, colorant, thixotropy imparting agent, spreading agent and solvent are as follows.
Adhesive resin
Resin-1: with following step synthetic, weight-average molecular weight is polyester-melamine resin of 7500
Mixed in molar ratio hexane diacid, phthalic acid and neopentyl glycol with 1:1:2 make it polymerization by common method, obtain weight-average molecular weight and be 1800 vibrin.Then, mix vibrin 100 weight portions and melamine resin (methylated melamines resin, trade name " SUMIMAL M-100 ", Sumitomo Chemical Co's system) 20 weight portions that so obtain, carried out crosslinked in 3 hours 220 ℃ of heating.
Resin-2: mix above-mentioned vibrin 100 weight portions and above-mentioned melamine resin 20 weight portions, carrying out crosslinked and synthetic, weight-average molecular weight in 0.5 hour 180 ℃ of heating is polyester-melamine resin of 2000.
Resin-3: mix above-mentioned vibrin 100 weight portions and above-mentioned melamine resin 20 weight portions, carrying out crosslinked and synthetic, weight-average molecular weight in 7 hours 220 ℃ of heating is polyester-melamine resin of 22000.
Resin-4: mix above-mentioned vibrin 100 weight portions and above-mentioned melamine resin 20 weight portions, carrying out crosslinked and synthetic, weight-average molecular weight in 4.5 hours 220 ℃ of heating is polyester-melamine resin of 12000.
Resin-5: mix above-mentioned melamine resin 20 weight portions in above-mentioned vibrin 100 weight portions, carrying out crosslinked and synthetic, weight-average molecular weight in 6 hours 220 ℃ of heating is polyester-melamine resin of 20000.
Colorant
Red 245: red pigment, color index C.I.Red 245, diketo-pyrrolo pyrrole pigments
Green 36: viridine green, color index C.I.Green 36, copper halide phthalocyanine color
Blue 15:6: blue pigment, color index C.I.Blue 15:6, copper phthalocyanine
The thixotropy imparting agent
BYK-R605: normal temperature cured type vibrin mobility donor, trade name " BYK-R605 ", BYK-CHEMIE JAPAN Co., Ltd. system
Spreading agent
PB821: macromolecular pigment dispersing agent, trade name " AJISPER PB821 ", AJINOMOTO FINE-TECHNO Co., Ltd. system
Solvent
BCA: acetate of butyl carbitol (butyl carbitol acetate)
The preparation example and the comparative preparation example of the ink for color filter that has used mentioned component then, are shown.
Preparation example 1
Hybrid resin-1 (adhesive resin, weight-average molecular weight 7500) 55 weight portions, Red245 (colorant) 22 weight portions, PB821 (spreading agent) 8 weight portions and BCA (solvent) 15 weight portions.Then, in potpourri 100 weight portions that obtain, mix BYK-R605 (thixotropy imparting agent) 0.55 weight portion, stir, disperse, obtain red ink R-1 with three rollers.
In this red ink R-1, the content of BYK-R605 is 2.5 weight % of Red245 content.In addition, solvent to contain proportional be 14.9 weight % of red ink R-1 integral body.
In addition, the shear rate of red ink R-1 is 1s
-1The time viscosities il
1(following simple note is made " viscosities il
1") be 15.0Pas, shear rate is 12s
-1The time viscosities il
12(following simple note is made " viscosities il
12") be 11.7Pas, with η
1/ η
12Thixotropy index TI than expression is 1.28.
Preparation example 2
The resin-2 (weight-average molecular weight 2000), the Red245 of 22 weight portions, the PB821 of 8 weight portions and the BCA of 15 weight portions that mix 55 weight portions.Then, in potpourri 100 weight portions that obtain, mix the BYK-R605 of 0.22 weight portion, stir, disperse, obtain red ink R-2 with three rollers.
In this red ink R-2, the content of BYK-R605 is 1.0 weight % of Red245 content.In addition, solvent to contain proportional be 15.0 weight % of red ink R-2 integral body.
In addition, the viscosities il of red ink R-2
1Be 15.0Pas, viscosities il
12Be 11.5Pas, thixotropy index TI is 1.30.
Comparative preparation example 1
The resin-3 (weight-average molecular weight 22000), the Red245 of 22 weight portions, the PB821 of 8 weight portions and the BCA of 15 weight portions that mix 55 weight portions.Then, potpourri 100 weight portions that obtain are stirred, disperse with three rollers, obtain red ink R-3.
In this red ink R-3, mismatch the thixotropy imparting agent.In addition, solvent to contain proportional be 15.0 weight % of red ink R-3 integral body.
In addition, the viscosities il of red ink R-3
1Be 15.0Pas, viscosities il
12Be 8.67Pas, thixotropy index TI is 1.73.
Comparative preparation example 2
The use level of BYK-R605 is made as 0.15 weight portion, in addition, similarly prepares red ink with preparation example 1.
The content of the BYK-R605 of resulting red ink R-4 is 0.7 weight % of Red245 content.In addition, solvent to contain proportional be 15.0 weight % of red ink R-4 integral body.
In addition, the viscosities il of red ink R-4
1Be 30.0Pas, viscosities il
12Be 22.2Pas, thixotropy index TI is 1.35.
Preparation example 3
The use level of BCA (solvent) is made as 16.3 weight portions,, in addition, similarly prepares red ink R-5 with preparation example 1 with containing of solvent of the proportional 16.0 weight % that are adjusted into red ink integral body.
The viscosities il of red ink R-5
1Be 11.0Pas, viscosities il
12Be 9.57Pas, thixotropy index TI is 1.15.
Preparation example 4
The use level of BCA (solvent) is made as 12.8 weight portions,, in addition, similarly prepares red ink R-6 with preparation example 1 with containing of solvent of the proportional 13.0 weight % that are adjusted into red ink integral body.
The viscosities il of red ink R-6
1Be 19.0Pas, viscosities il
12Be 14.4Pas, thixotropy index TI is 1.32.
Preparation example 5
The resin-4 (weight-average molecular weight 12000), the Green36 of 23 weight portions, the PB821 of 9 weight portions and the BCA of 18 weight portions that mix 50 weight portions.Then, in potpourri 100 weight portions that obtain, mix the BYK-R605 of 0.575 weight portion, stir, disperse, obtain green ink G-1 with three rollers.
In this green ink G-1, the content of BYK-R605 is 2.5 weight % of Green 36 content.In addition, solvent to contain proportional be 17.9 weight % of green ink G-1 integral body.
In addition, the viscosities il of green ink G-1
1Be 15.0Pas, viscosities il
12Be 9.68Pas, thixotropy index TI is 1.55.
Comparative preparation example 3
The use level of BYK-R605 is made as 0.15 weight portion, in addition, similarly prepares green ink with preparation example 5.
The content of the BYK-R605 of resulting green ink G-2 is 0.7 weight % of Green 36 content.In addition, solvent to contain proportional be 18.0 weight % of green ink G-2 integral body.
In addition, the viscosities il of green ink G-2
1Be 30.0Pas, viscosities il
12Be 18.5Pas, thixotropy index TI is 1.62.
Preparation example 6
The resin-5 (weight-average molecular weight 20000), the Blue15:6 of 17 weight portions, the PB821 of 7 weight portions and the BCA of 21 weight portions that mix 55 weight portions.Then, in potpourri 100 weight portions that obtain, mix the BYK-R605 of 0.425 weight portion, stir, disperse, obtain blue ink B-1 with three rollers.
In this blue ink B-1, the content of BYK-R605 is 2.5 weight % of Blue 15:6 content.In addition, solvent to contain proportional be 20.9 weight % of blue ink B-1 integral body.
In addition, the viscosities il of blue ink B-1
1Be 15.0Pas, viscosities il
12Be 12.2Pas, thixotropy index TI is 1.23.
Comparative preparation example 4
The use level of BYK-R605 is made as 0.15 weight portion, in addition, similarly prepares blue ink with preparation example 6.
The content of the BYK-R605 of resulting blue ink B-2 is 0.9 weight % of Blue 15:6 content.In addition, solvent to contain proportional be 21.0 weight % of blue ink B-2 integral body.
In addition, the viscosities il of blue ink B-2
1Be 30.0Pas, viscosities il
12Be 23.3Pas, thixotropy index TI is 1.29.
The evaluation of physical property of ink for color filter
The viscosities il of ink for color filter
1Measured value adopt following Three Estate to estimate.
A (well): viscosities il
1Below the above 18Pas of 12Pas.
B (qualifying): viscosities il
1For more than the 10Pas and, perhaps greater than 18Pas and below 20Pas less than 12Pas.
C (failing): viscosities il
1Less than 10Pas or greater than 20Pas.
In addition, the thixotropy index TI of ink for color filter adopts following Three Estate to estimate.
A (well): be more than 1.2 below 1.6.
B (qualifying): be more than 1.1 and, perhaps greater than 1.6 and be below 1.7 less than 1.2.
C (failing): less than 1.1 or greater than 1.7.
Table 1
Table 2
Table 3
The manufacturing of＜color filter 〉
The various devices and the parts that use in the manufacturing of color filter and the performance evaluation are as follows.
Printing equipment: the flat pattern gravure offset printing press of corresponding small-sized substrate (NAKAN Co., Ltd. system)
Galley: the intaglio plate that has the recess (candy strip shape) of dark 7 μ m, the wide 110 μ m of opening, spacing 300 μ m on the surface of glass substrate
Printing rubber blanket: the silicone rubber cloth of that superficial layer is formed by silicone rubber, bed thickness 0.9mm (SRI research and development Co., Ltd. system)
Transparency carrier: the soda-lime glass system transparency carrier of vertical 300mm, horizontal 400mm
Planarization roller: will have the sheet (the compound silicone sheets of NIPPA Co., Ltd. system) of silicone-based resin to be wound on the blanket cylindrical shell of above-mentioned printing equipment in the surface coated of polyethylene terephthalate (PET) base material and the roller that obtains
The height plane difference determinator of dyed layer: " α-STEP 500 " of KLA-TENCOR (TENCOR) corporate system
The intaglio offset of said apparatus and parts has been used in employing, prints by the order of green ink G-1, blue ink B-1 and red ink R-1, forms green, blueness and three red color ink patterns (candy strip) thus on the surface of transparency carrier 5.Above-mentioned three color ink patterns all are to be printed as live width 110 μ m, thick 7 μ m before ink solidification.
Then,, ink logo is solidified, obtain on transparency carrier 5, having R thus, G, the color filter of B three chromatic colorant layers the baking oven for heating of 230 ℃ of above-mentioned transparency carrier 5 usefulness 30 minutes.
Except printing by the order of green ink G-1, blue ink B-1 and red ink R-5 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Except printing by the order of green ink G-1, blue ink B-1 and red ink R-6 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 1
Except printing by the order of green ink G-2, blue ink B-1 and red ink R-1 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 2
Except printing by the order of green ink G-1, blue ink B-2 and red ink R-1 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 3
Except printing by the order of green ink G-1, blue ink B-1 and red ink R-2 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 4
Except printing by the order of green ink G-1, blue ink B-1 and red ink R-3 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 5
Except printing by the order of green ink G-2, blue ink B-2 and red ink R-4 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
Comparative example 6
Except printing by the order of green ink G-1, blue ink B-1 and red ink R-4 on the surface of transparency carrier, all the other obtain color filter similarly to Example 1.
The evaluation of press quality
To the color filter that obtains in embodiment 1～3 and the comparative example 1～6, measure the live width and the thickness of the ink logo (red, green, blueness) before ink logo solidifies with " α-STEP 500 " of KLA-TENCOR (TENCOR) corporate system.
Then, calculate the maximal value (μ m) of poor (the height plane difference between pixel) of the preceding pattern thickness of the maximal value (μ m) of difference of the printing live width before the ink solidification between the mutually different ink logo of color and ink solidification.
The maximal value of the difference of the printing live width before the ink solidification (, abbreviating " printing the poor of live width " as at this) adopts following Three Estate to estimate.
A (well): the maximal value of the difference of printing live width is below the 8 μ m.
B (qualifying): the maximal value of the difference of printing live width is greater than 8 μ m and below the 12 μ m.
C (failing): the maximal value of the difference of printing live width is greater than 12 μ m.
The maximal value (, abbreviating " the height plane difference between pixel " as at this) of the height plane difference between the pixel before the ink solidification adopts following Three Estate to estimate.
A (well): the maximal value of the height plane difference between pixel is below the 0.1 μ m.
B (qualifying): the maximal value of the height plane difference between pixel is greater than 0.1 μ m and be below the 0.2 μ m.
C (failing): the maximal value of the height plane difference between pixel is greater than 0.2 μ m.
In addition, based on these results, adopt the press quality of following Three Estate comprehensive evaluation embodiment and comparative example.
A: press quality is good.
B:, be the practical permissible degree that though press quality is lower slightly than estimating A.
C: press quality is insufficient, is not suitable for practicality.
Above evaluation result is shown in table 4.
Table 4
As shown in Table 4, in embodiment 1～3, in arbitrary printing ink of red ink, green ink and blue ink, containing of the weight-average molecular weight Mw of adhesive resin, solvent is proportional, shear rate is 1s
-1The time viscosities il
1With thixotropy index TI (η
1/ η
12) all in suitable scope, the maximum difference that contains proportional maximum poor (weight %) and TI of the maximum of the weight-average molecular weight Mw of the adhesive resin between above-mentioned three color inks poor (△ Mw), solvent all is suppressed in the suitable scope.According to this embodiment 1～3, the difference of printing live width and the height plane difference between pixel all obtain good result.Especially embodiment 1, and the difference of printing live width and any evaluation result of the height plane difference between pixel are all extremely good.
On the other hand, having only a kind of shear rate of printing ink of color in red ink, green ink and blue ink is 1s
-1The time viscosities il
1Be worth high comparative example 1,2 and 6, the difference of the printing live width between above-mentioned three color inks is remarkable.
In addition, though in all red inks, green ink and blue ink proportional, the shear rate of containing of the weight-average molecular weight Mw of adhesive resin, solvent be 1s
-1The time viscosities il
1With thixotropy index TI all in suitable scope, but for the excessive comparative example 3 of the maximum poor (△ Mw) of the weight-average molecular weight Mw of the adhesive resin between above-mentioned three color inks, though can suppress printing live width poor between above-mentioned three color inks, the height plane difference between pixel is excessive.
Thixotropy index TI for red ink is excessive, and the also excessive comparative example 4 of maximal value of the thixotropy index TI of three color inks, and the difference of the printing live width between above-mentioned three color inks is excessive.
In addition, shear rate is 1s in all red inks, green ink and blue ink
-1The time viscosities il
1All excessive comparative example 5, the difference of the printing live width between above-mentioned three color inks becomes extremely remarkable.
The present invention is not limited to above-mentioned record, in the scope of patented claim protection content, can carry out various design alterations.
Claims (6)
1, the manufacture method of color filter is characterized in that,
The mutually different printing ink more than three kinds of color is printed on the transparency carrier successively, and it is 7000～30000 adhesive resin, colorant, thixotropy imparting agent and solvent that described printing ink contains weight-average molecular weight, and shear rate is 1s
-1The time viscosities il
1Being 10～20Pas, is 1s by shear rate
-1The time viscosities il
1With shear rate be 12s
-1The time viscosities il
12Ratio η
1/ η
12Represented thixotropy index TI is 1.1～1.7, wherein, and viscosities il
1, η
12Unit be Pas,
Then, with the ink logo planarization that forms by each described printing ink that is formed on the described transparency carrier,
And then, described ink logo is solidified, form dyed layer.
2, the manufacture method of color filter as claimed in claim 1 is characterized in that, prints described printing ink with hectographic printing method or reverse printed method.
3, the manufacture method of color filter as claimed in claim 1 is characterized in that, between each described printing ink, the difference of the weight-average molecular weight of described adhesive resin is below 17500.
4, the manufacture method of color filter as claimed in claim 2 is characterized in that, between each described printing ink, the difference of the weight-average molecular weight of described adhesive resin is below 17500.
As the manufacture method of each described color filter in the claim 1～4, it is characterized in that 5, the difference of the described thixotropy index TI between each described printing ink is below 0.40.
6, a kind of ink for color filter is characterized in that, contain weight-average molecular weight and be 7000～30000 adhesive resin, colorant, thixotropy imparting agent and solvent, and shear rate is 1s
-1The time viscosities il
1Being 10～20Pas, is 1s by shear rate
-1The time viscosities il
1With shear rate be 12s
-1The time viscosities il
12Ratio η
1/ η
12Represented thixotropy index TI is 1.1～1.7, wherein, and viscosities il
1, η
12Unit be Pas.
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| JP2008-063042 | 2008-03-12 | ||
| JP2008063042 | 2008-03-12 | ||
| JP2008063042A JP4575967B2 (en) | 2008-03-12 | 2008-03-12 | Manufacturing method of color filter |
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| CN101533116A true CN101533116A (en) | 2009-09-16 |
| CN101533116B CN101533116B (en) | 2012-05-30 |
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| JP (1) | JP4575967B2 (en) |
| KR (1) | KR101008919B1 (en) |
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| CN102385083A (en) * | 2010-09-03 | 2012-03-21 | 株式会社Lg化学 | Apparatus and method for manufacturing color filter substrate by using ink-jet print method |
| CN102582303A (en) * | 2012-03-13 | 2012-07-18 | 天津市中环高科技有限公司 | Printing application method for soaking ink on TPU (thermoplastic urethane) plates |
| CN102653649A (en) * | 2012-02-27 | 2012-09-05 | 京东方科技集团股份有限公司 | Ink composition, color filter containing ink composition and liquid crystal display device |
| WO2013166752A1 (en) * | 2012-05-11 | 2013-11-14 | 深圳市华星光电技术有限公司 | Color filter and manufacturing method thereof |
| CN110770034A (en) * | 2017-06-20 | 2020-02-07 | 株式会社秀峰 | Offset printing method |
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| JPH063519A (en) * | 1992-06-23 | 1994-01-14 | Fujitsu Ltd | Production of color filter |
| JPH06348023A (en) * | 1993-06-03 | 1994-12-22 | Nippon Kayaku Co Ltd | Coating method with resist for color filter containing pigment |
| JPH10330662A (en) * | 1997-06-03 | 1998-12-15 | Matsushita Electric Ind Co Ltd | Ink for color filter and production of color filter with the same |
| JP2004302242A (en) * | 2003-03-31 | 2004-10-28 | Nippon Steel Chem Co Ltd | Composition for color filter and color filter |
| JP2006195425A (en) * | 2004-12-15 | 2006-07-27 | Jsr Corp | Radiation sensitive composition for forming colored layer, color filter and color liquid crystal display panel |
| WO2007093536A2 (en) * | 2006-02-17 | 2007-08-23 | Ciba Holding Inc. | Blue colour filters with enhanced contrast |
| JP5188043B2 (en) * | 2006-08-09 | 2013-04-24 | 住友ゴム工業株式会社 | Ink for reversal printing, reversal printing method using the same, liquid crystal color filter, and method for producing liquid crystal color filter |
-
2008
- 2008-03-12 JP JP2008063042A patent/JP4575967B2/en not_active Expired - Fee Related
-
2009
- 2009-02-11 KR KR20090011100A patent/KR101008919B1/en not_active IP Right Cessation
- 2009-02-18 TW TW98105175A patent/TWI396869B/en not_active IP Right Cessation
- 2009-03-05 CN CN2009101263766A patent/CN101533116B/en not_active Expired - Fee Related
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| CN102385083B (en) * | 2010-09-03 | 2014-09-03 | 株式会社Lg化学 | Apparatus and method for manufacturing color filter substrate by using ink-jet print method |
| CN102653649A (en) * | 2012-02-27 | 2012-09-05 | 京东方科技集团股份有限公司 | Ink composition, color filter containing ink composition and liquid crystal display device |
| CN102653649B (en) * | 2012-02-27 | 2014-06-11 | 京东方科技集团股份有限公司 | Ink composition, color filter containing ink composition and liquid crystal display device |
| CN102582303A (en) * | 2012-03-13 | 2012-07-18 | 天津市中环高科技有限公司 | Printing application method for soaking ink on TPU (thermoplastic urethane) plates |
| WO2013166752A1 (en) * | 2012-05-11 | 2013-11-14 | 深圳市华星光电技术有限公司 | Color filter and manufacturing method thereof |
| CN110770034A (en) * | 2017-06-20 | 2020-02-07 | 株式会社秀峰 | Offset printing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101533116B (en) | 2012-05-30 |
| KR101008919B1 (en) | 2011-01-17 |
| JP2009217169A (en) | 2009-09-24 |
| TW200949311A (en) | 2009-12-01 |
| KR20090097781A (en) | 2009-09-16 |
| JP4575967B2 (en) | 2010-11-04 |
| TWI396869B (en) | 2013-05-21 |
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