WO2019035595A1 - Composition d'encre transmettant les infrarouges pour jet d'encre, procédé de formation d'un motif en couronne faisant intervenir ladite composition, motif en couronne ainsi formé, et substrat d'affichage comprenant ledit motif - Google Patents

Composition d'encre transmettant les infrarouges pour jet d'encre, procédé de formation d'un motif en couronne faisant intervenir ladite composition, motif en couronne ainsi formé, et substrat d'affichage comprenant ledit motif Download PDF

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Publication number
WO2019035595A1
WO2019035595A1 PCT/KR2018/009041 KR2018009041W WO2019035595A1 WO 2019035595 A1 WO2019035595 A1 WO 2019035595A1 KR 2018009041 W KR2018009041 W KR 2018009041W WO 2019035595 A1 WO2019035595 A1 WO 2019035595A1
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WIPO (PCT)
Prior art keywords
ink composition
infrared ray
ray transmitting
bezel pattern
inkjet
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PCT/KR2018/009041
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English (en)
Korean (ko)
Inventor
유재현
김아름
박성은
김준형
Original Assignee
주식회사 엘지화학
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Priority claimed from KR1020180084684A external-priority patent/KR102178853B1/ko
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to US16/472,400 priority Critical patent/US10934443B2/en
Priority to CN201880005303.9A priority patent/CN110114422B/zh
Publication of WO2019035595A1 publication Critical patent/WO2019035595A1/fr

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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
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • 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
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • the present invention relates to an infrared ray transmitting ink composition for ink jet, a method of forming a bezel pattern using the same, a bezel pattern and a display substrate including the same, and more particularly, It is possible to detect the mark mark by the camera and to detect the indentation mark by the non-destructive inspection, and it has excellent storage stability, excellent curing sensitivity, excellent adhesion with the substrate, and improved ink jet process performance A method of forming a bezel pattern using the same, a bezel pattern manufactured thereby, and a display substrate including the same.
  • Display devices such as TVs and smart phones, such as mobile devices, have been developed differently from the originality and convenience.
  • there are also a number of demands and problems to be solved for improved convenience And studies for solving this are continuing.
  • As a means for improving the user's screen immersion level a narrow bezel that reduces unnecessary edges is applied to secure a more extended screen.
  • the case of the display panel becomes unnecessary,
  • Research has been continued to obscure the outside of the display display area and to further reduce the difference in viewing between the display area and the non-display area.
  • development of an ink which is improved in storage stability, excellent in curing sensitivity, capable of exhibiting excellent adhesion to a substrate, and capable of improving inkjet process performance is also desired.
  • Patent Document 1 Korean Patent Laid-open Publication No. 10-2013-0016460
  • Another object of the present invention is to provide an infrared ray transmitting ink composition for an ink jet, which is improved in storage stability, excellent in curing sensitivity, excellent in adhesion with a base material and capable of improving the performance of an inkjet process, And a display substrate including the bezel pattern.
  • the present invention provides a pigment dispersion comprising a lactam black pigment or a perylene black pigment or a combination thereof; Dispersing agent; Epoxy compounds; Oxetane compounds; A photopolymerization initiator; And an organic solvent.
  • the present invention provides a method of manufacturing an inkjet inkjet ink composition, comprising the steps of: a) forming a bezel pattern by inkjet printing the inkjet infrared ray transmitting ink composition on a substrate; And b) irradiating the bezel pattern with radiation to cure the bezel pattern.
  • the present invention also provides a method of forming a bezel pattern using the ink composition.
  • the present invention also provides a bezel pattern manufactured according to the method of forming the bezel pattern.
  • the present invention provides a display substrate including the bezel pattern.
  • the infrared ray transmitting ink composition for ink jet according to the present invention By using the infrared ray transmitting ink composition for ink jet according to the present invention, the method of forming a bezel pattern using the same, the bezel pattern thus formed and the display substrate including the same, It is possible to identify an align marker, and it is also possible to detect a pressure mark by nondestructive inspection after ACF bonding.
  • the infrared ray transmitting ink composition for ink jet according to the present invention has excellent storage stability, excellent curing sensitivity, excellent adhesion to a substrate, and improved ink jet process performance.
  • the infrared ray transmitting ink composition for ink jet according to the present invention comprises a Lactam Black pigment or a Perylene Black pigment or a combination thereof, a dispersant, an epoxy compound, an oxetane compound, a photopolymerization initiator and an organic solvent.
  • the lactam black pigment or perylene black pigment is an infrared ray transmitting pigment and is a coloring agent for determining the infrared transmittance of a coating layer formed by curing the ink composition according to the present invention.
  • a pigment such as carbon black or aniline black which can not be used because the transmittance is very low due to blocking (light shielding) of light of all wavelengths.
  • the non-destructive infrared ray detector such as an infrared camera can be used to detect the alignment mark and the pressure mark of the substrate appearing under the bezel pattern. Detection is possible.
  • perylene black pigment examples include, but are not limited to, Paliogen Black L 0086 (BASF, Germany) and Paliogen Black S 0084 (BASF, Germany).
  • the content of the infrared ray transmitting pigment is 5 to 15% by weight, preferably 10 to 12% by weight, more preferably about 12% by weight based on the total ink composition, and the content of the infrared ray transmitting pigment is 5
  • the content is less than 15% by weight, the viscosity of the ink becomes excessively high, or the infrared transmittance is low, so that the sensitivity of the infrared sensor The function may be degraded.
  • the dispersant is used to make the infrared transmitting pigment into particles of uniform size and also to shorten the production time of the ink.
  • the dispersing agent may be a polymeric, nonionic, anionic or cationic dispersing agent.
  • examples of the dispersing agent include acrylic type, polyalkylene glycol and its esters, polyoxyalkylene polyhydric alcohol, ester alkylene oxide adduct, alcohol Alkylene oxide adducts, sulfonic acid esters, sulfonate salts, carboxylic acid esters, carboxylic acid salts, alkylamide alkylene oxide adducts and alkyl amines, which may be used alone or in combination of two or more thereof , Storage stability of ink, and the like are preferably used.
  • the content of the dispersing agent is 0.5 to 5% by weight, preferably 1 to 3% by weight, more preferably about 2% by weight based on the total ink composition.
  • the content of the dispersing agent is less than 0.5% , There is a fear that the pigment is not evenly dispersed.
  • the content exceeds 5% by weight, the pigment may aggregate and the curing sensitivity may be lowered.
  • the epoxy compound is cationic polymerization type and may be a mixture of one or two selected from alicyclic epoxy compounds containing a cationic polymerizable alicyclic epoxy monomer.
  • Such an alicyclic epoxy compound may contain one or two epoxidized aliphatic cyclic groups, wherein the epoxidized aliphatic cyclic group may be, for example, a compound having an epoxy group formed in an alicyclic ring, The hydrogen atom of the formula ring may be substituted by a substituent such as an alkyl group.
  • Examples of the alicyclic epoxy compound that is, the epoxy compound include dicyclopentadiene dioxide, limonene dioxide, (3,4-epoxycyclohexyl) methyl-3,4-epoxycyclohexanecarboxylate, 3- Vinyl cyclohexene oxide, bis (2,3-epoxycyclopentyl) ether, bis (3,4-epoxycyclohexylmethyl) adipate, bis (3,4-epoxy-6-methylcyclohexylmethyl) adipate, (3,4-epoxycyclohexyl) methyl-3,4-epoxy-6-methylcyclohexanecarboxylate, ethylene glycol bis (3,4-epoxy Cyclohexyl) ether, 3,4-epoxycyclohexene carboxylic acid ethylene glycol diester and (3,4-epoxycyclohexyl) ethyltrimethoxysilane, but are not limited thereto
  • the content of the epoxy compound is 5 to 25% by weight, preferably 7 to 15% by weight, more preferably about 10% by weight based on the total ink composition, and the content of the epoxy compound is 5%
  • the curing sensitivity is deteriorated. If it exceeds 25% by weight, the viscosity of the ink may increase and the performance of the ink-jet process may be deteriorated.
  • the oxetane compound is a compound having a quaternary cyclic ether group in the molecular structure and is used for lowering the viscosity of the cationic polymerizable ink composition.
  • examples thereof include 3-ethyl-3-hydroxymethyloxetane, 1,4- (3-ethyl-3-oxetanyl) methyl] ether, bis [(3-ethyl-3-oxetanyl) methoxymethyl] 3-ethyl-3-cyclohexyloxymethyloxetane, phenol novolak oxetane and the like, and trade names such as 3-ethyl-3- (2-ethylhexyloxymethyl) oxetane, 3- Examples thereof include OXT-101, Aronoxetan OXT-121, Aronoxetan OXT-211, Aronoxetan OXT-221 and Aronoxetan OXT-212. Two
  • the content of the oxetane compound is 25 to 50% by weight, preferably 30 to 45% by weight, and more preferably 34 to 40% by weight with respect to the total ink composition, When the amount is less than 25% by weight, the viscosity may increase and the inkjet processability may be deteriorated. When the amount is more than 50% by weight, the curing sensitivity may be lowered.
  • the organic solvent may be used without particular limitation as long as it has excellent curing sensitivity even after printing the bezel pattern on the display substrate using the ink composition according to the present invention.
  • a viscosity of 1 to 5 cP, preferably 3 cP or less at 25 ⁇ .
  • the infrared transmitting pigment is contained in the total ink composition at a low content of less than 10% (especially 7% or less), even if an organic solvent such as ethylene glycol monobutyl ether acetate (BCSA) having a boiling point of less than 200 ° C is used
  • BCSA ethylene glycol monobutyl ether acetate
  • the use of an organic solvent capable of improving or improving the performance of the inkjet process is required.
  • the inkjet process performance is determined by the conditions of high boiling point and low viscosity (boiling point is 200 ° C or higher, The viscosity is 1 to 5 cP, especially 3 cP or less).
  • an organic solvent satisfying such conditions for example, butyl diglyme or diethylene glycol di Butyl ether), dipropylene glycol methyl ether acetate, ethylene glycol dibutyrate, diethyl succinate, gamma-butyrolactone (GBL) and ethyl caprolactone
  • An organic solvent such as ethyl caprate should be used, and it is most preferable to use butyl diglyme and diethyl succinic acid.
  • the content of the organic solvent is 10 to 40% by weight, preferably 20 to 35% by weight, more preferably 25 to 35% by weight based on the total ink composition.
  • the content of the organic solvent is less than 10% by weight, Or the thickness of the bezel layer may become thick.
  • it exceeds 40% by weight the curing sensitivity may be lowered.
  • the photopolymerization initiator is a cationic polymerizable initiator.
  • the photopolymerization initiator includes at least one of a compound capable of forming a cationic species or a Bronsted acid by irradiation with ultraviolet rays, for example, an iodonium salt and a sulfonium salt .
  • the iodonium salt or sulfonium salt causes a curing reaction in which monomers having an unsaturated double bond contained in the ink react with each other to form a polymer in an ultraviolet curing process.
  • the photopolymerization initiator may be an anion represented by SbF 6 -, AsF 6 -, BF 6 -, (C 6 F 5 ) 4 B-, PF 6 - or RfnF 6 -n, Irgacure 250, Irgacure 270, Irgacure 290, CPI-100P, CPI-101A, CPI-210S, Omnicat 440, Omnicat 550 and Omnicat 650.
  • These photopolymerization initiators may be used alone or in combination of two or more. Two or more of them may be used in combination.
  • the photopolymerization initiator in order to improve the storage stability of the ink jet infrared transmitting ink composition, the photopolymerization initiator may be a sulfonium salt, more preferably Omnicat 550.
  • the content of the photopolymerization initiator is 1 to 10% by weight, preferably 2 to 7% by weight, more preferably 3 to 5% by weight based on the total ink composition.
  • the reaction may be insufficient, and if it exceeds 10% by weight, it may not be dissolved completely or the viscosity may be increased and the inkjet processability may be deteriorated.
  • the ink composition according to the present invention may further include at least one of a reactive diluent, an adhesion promoting agent, and a surfactant, if necessary.
  • the reactive diluent may be included to improve the ink jet processability by lowering the viscosity of the ink.
  • a glycidyl ether-based epoxy compound capable of cationic polymerization may be used.
  • the glycidyl ether-based epoxy compound include N-butyl N-butyl glycidyl ether, and neopentyl glycol diglycidyl ether (LD203). One or more of them may be used.
  • the content of the reactive diluent is preferably 0 to 30% by weight, more preferably 0.1 to 20% by weight based on the total weight of the ultraviolet curable ink composition. If it is more than 30% by weight, the curing sensitivity is lowered.
  • the adhesion-promoting agent may improve adhesion of the substrate and the print layer, and may include at least one selected from the group consisting of an alkoxysilane compound and a phosphate-based acrylate such as phosphate acrylate,
  • the silane compound include 3-glycidoxypropyl trimethoxysilane, KBM-403 (Shin-Etsu Co., USA), 3-glycidoxypropyl methyldimethoxysilane KBM-402), 2- (3,4 epoxycyclohexyl) ethyltrimethoxysilane, KBM-303, 3-glycidoxypropylmethyldiethoxysilane (3- Glycidoxypropyl methyldiethoxysilane, KBE-402), 3-glycidoxypropyl triethoxysilane (KBE-403), and 3-methacryloxypropyl trimethoxysilane ane, KBM-503), and one or more of them can be used.
  • the content thereof is 1 to 5% by weight, preferably 2 to 4% by weight based on the total ink composition.
  • the content of the adhesion promoting agent is less than 1% by weight, If it is more than 5% by weight, it may become difficult to rework the printed layer in the substrate.
  • the surface active agent controls the surface tension of the ink to smoothly jetting the ink, and also allows the ink to properly spread on the substrate.
  • the surfactant is commercially available from Dai Nippon Ink & Chemicals, Megafack F-444, F-475 , Surflon S-111, S-112 of F-478, F-479, F-484, F-550, F-552, F-553, F- , Fluorad FC-93, FC-95, FC-98, FC-129 and FC-135 of Sumitomo 3M, S-113, S-121, S-131, S- 310, BYK-320, BYK-320, BYK-330, BYK-300, FSN, FSN-100 and FSO from DuPont, 361, BYK-381, BYK-370, BYK-371, BYK-331, BYK-333, BYK-342, BYK-350, BYK-354, BYK-355, BYK-
  • the content thereof is 0.1 to 5% by weight, preferably 0.5 to 3% by weight based on the total ink composition.
  • the content of the surfactant is less than 0.1% by weight, The effect of lowering the tensile force is insufficient and coating failure phenomenon occurs when the composition is coated on the substrate.
  • the amount of the surfactant is more than 5% by weight, the surfactant is used in an excess amount and the compatibility and defoaming property of the composition is rather reduced Problems may arise.
  • the inkjet infrared transmitting ink composition according to the present invention (or the ink) has a curing dose of 20 to 5,000 mJ / cm 2 , preferably 100 to 3,000 mJ / cm 2 and a wavelength of 250 to 410 nm, Is cured by absorbing radiation in the wavelength range of 360 to 410 nm and has a viscosity of 1 to 30 cP at 25 ° C, preferably 2 to 20 cP at 25 ° C, preferably 2 to 20 cP, suitable for ink jet processes,
  • the adhesion force with the substrate in the state that the heat treatment is excluded is cross cut test 4B or more.
  • the inkjet infrared ray transmitting ink composition according to the present invention (or the ink) has a viscosity of not less than 20 days, preferably not less than 40 days, more preferably not less than 60 days, Time, and achieves excellent ink stability without precipitation of the photoinitiating polymer after ink production.
  • the infrared ray transmitting ink composition for ink jet according to the present invention is capable of curing in a long wavelength ultraviolet ray, and has a light transmittance similar to that of a conventional carbon black pigment, but has a transmittance of 80% at an infrared wavelength of 850 to 940 nm, Even after the bezel pattern is printed on the display substrate by using a high lactam black pigment or a perylene black pigment or a combination thereof, it is possible to confirm an align marker using an infrared camera, Can be detected.
  • the inkjet process performance may be deteriorated by setting the content of the pigment to 10% by weight or more based on the total ink composition, In order to prevent this, the present invention improves the performance of an inkjet process by using an organic solvent satisfying a specific condition.
  • the use of the infrared ray transmitting ink composition for ink jet according to the present invention has excellent curing sensitivity of the ink of 2,000 mJ / cm 2 @ 1.8 ⁇ ⁇ , and even when the post-process (heat treatment) Is excellent.
  • the post-process (heat treatment) Is excellent.
  • the method for forming a bezel pattern using the inkjet infrared ray transmitting ink composition includes the steps of: a) forming a bezel pattern by inkjet printing the inkjet infrared ray transmitting ink composition on a substrate; and b) irradiating the bezel pattern with radiation to cure .
  • the thickness of the cured bezel pattern may be 1 to 3 ⁇ ⁇ , and a detailed description thereof is based on the method described in the ink composition item and the method of forming the bezel pattern using a conventional cationic polymerization ink composition.
  • the present invention provides a bezel pattern manufactured using the inkjet infrared ray transmitting ink composition, or a bezel pattern manufactured according to the method of forming the bezel pattern.
  • the present invention also provides a display substrate including the bezel pattern.
  • the display may be a plasma display panel (PDP), a light emitting diode (LED), an organic light emitting diode (OLED), a liquid crystal display A liquid crystal display (LCD), a liquid crystal display (LCD), and a cathode ray tube (CRT).
  • PDP plasma display panel
  • LED light emitting diode
  • OLED organic light emitting diode
  • LCD liquid crystal display
  • LCD liquid crystal display
  • LCD liquid crystal display
  • CRT cathode ray tube
  • lactam black (trade name: S0100CF, BASF, Germany) as a pigment
  • acrylic dispersant as a dispersing agent
  • KBM-403 as an adhesion promoter
  • SiHT inkjet infrared transmitting ink composition
  • An infrared ray transmitting ink composition for ink jet printing was prepared by the same composition and method as in Example 1 except that diethyl succinate was used instead of butyl diglyme as a solvent as shown in the following Table 1 .
  • lactam black used as a pigment was changed to 10 wt% instead of 12 wt% and the content of OXT-221 used as an oxetane compound was changed to 36 wt% instead of 34 wt%, as shown in the following Table 1 ,
  • An infrared ray transmitting ink composition for an ink jet was prepared by the same composition and method as in Example 1.
  • composition shown in the following Table 1 was prepared in the same manner as in Example 1, except that 12 weight% of perylene black (trade name: Paliogen Black L 0086, BASF, Germany) was used, .
  • KBM-403 3-glycidoxypropyltrimethoxysilane
  • OXT-221 and OXT-212 (TOAGOSEI, Japan) as an oxetane compound and 10 wt% of 1,4-cyclohexanedimethanol di (Butyl diglyme) as an organic solvent, 4 wt% of Irgacure 250 (Basf, Germany) as a photopolymerization initiator, and 1 wt% of a photoinitiator as a photosensitizer, Of ITX (IHT, China) was used instead of ITX (IHT, China).
  • An ink composition was prepared by the same composition and method as in Example 2, except that ethylene glycol monobutyl ether acetate (BCSA) was used instead of diethyl succinic acid as an organic solvent as shown in the following Table 2.
  • BCSA ethylene glycol monobutyl ether acetate
  • Example 2 As shown in Table 2 below, 25% by weight of butyl diglyme was used as an organic solvent, 29% by weight of OXT-221 was used as an oxetane compound, 10% by weight of 1,4-cyclohexane di
  • An ink composition was prepared by the same composition and method as in Example 1 except that methanol divinyl ether, 3 wt% of CPI-210S as a photopolymerization initiator, and 1 wt% of DBA as a photosensitizer were used.
  • An ink composition was prepared by the same composition and method as in Comparative Example 4, except that UV-692S (Tetrachem, China) was used instead of CPI-210S as a photopolymerization initiator as shown in the following Table 2.
  • An ink composition was prepared by the same composition and method as in Comparative Example 4 except that Irgacure 290 (BASF, Germany) was used instead of CPI-210S as a photopolymerization initiator as shown in the following Table 2.
  • the ink composition prepared in Examples 1 to 5 and Comparative Examples 1 to 6 was applied to a square glass having a size of 50 mm in width, 50 mm in length and 0.5 m in thickness using X-rite 341C After the sample was prepared by inkjet printing at an optical density (OD) of 0.9, the thickness of the sample, curing sensitivity, storage stability, ink stability, inkjet process idle time, ) Performance and infrared transmittance (@ 850 nm) were evaluated, and the results are shown in Tables 3 and 4 below.
  • the curing sensitivity was evaluated by measuring the UV energy at a tack free point using a UV LED lamp having a wavelength of 395 nm.
  • the storage stability of the ink was measured by storing the ink in an oven at 35 ° C. and measuring the viscosity at 10
  • the ink stability was evaluated by whether or not the photopolymerization initiator was precipitated after ink production.
  • the ink jet process performance was evaluated by measuring the short purse (3s) and the idle time after wiping in the state where all the nozzles were ejected, (ASTM D3002, D3359).
  • the rework performance was evaluated by the Abrasion & rubbing tester with wiper (CF-909 ), And then acetone was supplied to it to check whether the bezel layer was removed within 20 round trips (feed rate: 30 reciprocations / min).
  • the infrared transmittance was measured with a UV-VIS spectrometer and the transmittance at 850 nm is shown in Tables 3 and 4 (the transmittance of the glass itself without printing the ink composition is taken as 100%). Further, in the evaluation of ink stability and reworkability in the following Tables 3 and 4, it means that the display is excellent and the X display is not excellent.
  • Example 1 Example 2
  • Example 3 Example 4
  • Example 5 Optical Density 0.9 0.9 0.9 0.9 0.9 0.9 Thickness ( ⁇ ) 1.9 1.9 2.2 2.3 1.9 Curing sensitivity (UV energy, mJ / cm2) 1500 1500 1500 1500 1500 1500 1500 1500 Storage stability (Storage point at 35 °C, 10% or more) 60 60 60 60 60 Ink stability ⁇ ⁇ ⁇ ⁇ ⁇ Inkjet process performance (idle time) 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes Lower adhesion 5B 5B 5B 5B 5B Rework performance ⁇ ⁇ ⁇ ⁇ ⁇ Transmittance (@ 850 mm) 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80%
  • Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Optical Density 0.9 0.9 0.9 0.9 0.9 0.9 0.9 Thickness ( ⁇ ) 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 Curing sensitivity (UV energy, mJ / cm2) 1000 1500 5000 4000 4000 5000 Storage stability (Storage point at 35 °C, 10% or more) 10 60 60 60 50 50 50 Ink stability ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ Inkjet process performance (idle time) 20 minutes 3 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes 20 minutes Lower adhesion 5B 5B 5B 5B 5B 5B Rework performance ⁇ ⁇ ⁇ ⁇ ⁇ Transmittance (@ 850 mm) 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80% 80%
  • Example 4 in which the content of the lactam black pigment was lowered to 10% by weight, the thickness of the sample (i.e., bezel) , which is 3 mu m or less and is suitable for the present invention.
  • Other physical properties were the same as in Examples 1 and 2, confirming that there was no problem in reliability.
  • Example 3 in which the content of the organic solvent was lowered to 20 wt%, the thickness of the sample (i.e., the bezel) , which is 3 mu m or less and is suitable for the present invention.
  • Other physical properties were the same as in Examples 1 and 2, confirming that there was no problem in reliability.
  • Examples 1 to 5 using Omnicat 550 as a photopolymerization initiator exhibited excellent curing sensitivity without using a photosensitizer, whereas Comparative Examples 3 to 6 using CPI-210S, UV-692S or Irgacure 290 instead of Omnicat 550 6 had poor curing sensitivity despite the use of a photosensitizer (1 wt% DBA).
  • the ink compositions according to Examples 1 to 5 did not cause precipitation of the initiator after ink production, and showed good ink stability.
  • the ink compositions according to Examples 1 to 5 using 3% by weight of KBM-403 as an adhesion promoter showed excellent adhesion at a level of 5B as measured by a cross cut test.

Abstract

L'invention concerne une composition d'encre transmettant les infrarouges pour un jet d'encre, un procédé de formation d'un motif en couronne faisant intervenir ladite composition, un motif en couronne ainsi formé, et un substrat d'affichage comprenant ledit motif. La composition d'encre transmettant les infrarouges permet de contrôler les marqueurs d'alignement au moyen d'une caméra infrarouge et de détecter des marques de pression au moyen d'un examen non destructif même après que le motif en couronne a été imprimé sur le substrat d'affichage, présente une excellente stabilité au stockage, une excellente sensibilité au durcissement et une excellente adhérence à un matériau de base, et peut améliorer les performances d'un procédé au jet d'encre. La composition d'encre transmettant les infrarouges pour un jet d'encre comprend : un pigment noir de lactame, un pigment noir de pérylène ou une combinaison de ces derniers ; un agent dispersant ; un composé époxy ; un composé oxétanne ; un amorceur de photopolymérisation ; et un solvant organique.
PCT/KR2018/009041 2017-08-18 2018-08-08 Composition d'encre transmettant les infrarouges pour jet d'encre, procédé de formation d'un motif en couronne faisant intervenir ladite composition, motif en couronne ainsi formé, et substrat d'affichage comprenant ledit motif WO2019035595A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/472,400 US10934443B2 (en) 2017-08-18 2018-08-08 Infrared transmitting ink composition for ink jet, method for forming bezel pattern by using same, bezel pattern formed thereby, and display substrate comprising same
CN201880005303.9A CN110114422B (zh) 2017-08-18 2018-08-08 喷墨用红外透射油墨组合物、形成边框图案的方法、边框图案和包括边框图案的显示基板

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2017-0104616 2017-08-18
KR20170104616 2017-08-18
KR1020180084684A KR102178853B1 (ko) 2017-08-18 2018-07-20 잉크젯용 적외선 투과 잉크 조성물, 이를 이용한 베젤 패턴의 형성방법, 이에 따라 제조한 베젤 패턴 및 이를 포함하는 디스플레이 기판
KR10-2018-0084684 2018-07-20

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WO2019035595A1 true WO2019035595A1 (fr) 2019-02-21

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