# US 2017/0283633 A1 · Uv-curable ink composition, method for producing bezel pattern of display substrate using same, and bezel pattern produced thereby > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283633 A1 - Document ID: US20170283633A1 - Status: Published application - Kind: A1 - Application number: 15/514,306 - Filed: 2015-09-30 - Published: 2017-10-05 - Earliest claimed: 2014-09-26 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Sung-Eun PARK; Yong-Sung GOO; Seung-A BACK; Joon-Hyung KIM - Web page: https://patentgrep.com/patent/US20170283633A1 ## CPC - C09D 11/101: Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing - B41F 17/006: {for printing on curved surfaces not otherwise provided for} - B41J 11/002: {Curing or drying the ink on the copy materials, e.g. by heating or irradiating} - B41M 7/00: After-treatment of prints, e.g. heating, irradiating, {setting of the ink, protection of the printed stock (pre-treatment or treatment during printing B41M5/0011; printers for treating or overcoating copy materials before, during or after printing B41J11/0015)} - B41M 7/009: {using thermal means, e.g. infrared radiation, heat} - C08F 2/48: by ultraviolet or visible light - C09D 11/00: Inks - C09D 11/03: characterised by features other than the chemical nature of the binder - C09D 11/037: characterised by the pigment - C09D 11/102: containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds - C09D 11/324: containing carbon black - C09D 11/36: based on non-aqueous solvents - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - C09D 171/00: Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain (based on polyacetals C09D159/00; based on epoxy resins C09D163/00; based on polythioether-ethers C09D181/02; based on polyethersulfones C09D181/06); Coating compositions based on derivatives of such polymers - G09F 9/00: Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) - H05K 1/092: {Dispersed materials, e.g. conductive pastes or inks} - H05K 3/12: using {thick film techniques, e.g.} printing techniques to apply the conductive material {or similar techniques for applying conductive paste or ink patterns} - H05K 3/125: {by ink-jet printing} - H05K 3/1275: {by other printing techniques, e.g. letterpress printing, intaglio printing, lithographic printing, offset printing} - H05K 2203/0534: Offset printing, i.e. transfer of a pattern from a carrier onto the substrate by using an intermediate member - 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 (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L) - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract The present invention relates to a UV-curable ink composition, a method for producing a bezel pattern of a display substrate using same, and a bezel pattern produced thereby, the UV-curable ink composition comprising a colorant, an epoxy compound, an oxetane compound and a photopolymerization initiator, wherein a content ratio of the epoxy compound to the oxetane compound is 1:0.5 to 1:6, a taper angle after being cured is 0° to 30°, and optical density (OD) value is 0.05 to 2.5 per a film thickness of 1.0 μm. ## Claims ### Claim 1 A UV-curable ink composition comprising a colorant, an epoxy compound, an oxetane compound, and a photopolymerization initiator, wherein a content ratio of the epoxy compound to the oxetane compound is 1:0.5 to 1:6, a taper angle after being cured is 0° to 30°, and optical density (OD) value is 0.05 to 2.5 per a film thickness of 1.0 μm. ### Claim 2 (depends on 1) The UV-curable ink composition of claim 1, further comprising one or more selected from the group consisting of a surfactant, an adhesion promoter, a diluent, and a photosensitizer. ### Claim 3 (depends on 1) The UV-curable ink composition of claim 1, wherein the oxetane compound comprises an oxetane compound having one oxetane ring and an oxetane compound having two oxetane rings. ### Claim 4 (depends on 3) The UV-curable ink composition of claim 3, wherein a content ratio of the oxetane compound having one oxetane ring to the oxetane compound having two oxetane rings is from 1:16 to 1:3. ### Claim 5 (depends on 1) The UV-curable ink composition of claim 1, wherein a content of the epoxy compound is 5 to 50 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 6 (depends on 1) The UV-curable ink composition of claim 1, wherein a content of the oxetane compound is 15 to 75 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 7 (depends on 1) The UV-curable ink composition of claim 1, wherein the photopolymerization initiator is an iodonium salt or a sulfonium salt. ### Claim 8 (depends on 1) The UV-curable ink composition of claim 1, wherein a content of the photopolymerization initiator is 1 to 15 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 9 (depends on 1) The UV-curable ink composition of claim 1, wherein a content of the colorant is 1 to 15 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 10 (depends on 2) The UV-curable ink composition of claim 2, wherein a content of the diluent is 0 to 30 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 11 (depends on 2) The UV-curable ink composition of claim 2, wherein the surfactant is a fluorine-based surfactant. ### Claim 12 (depends on 11) The UV-curable ink composition of claim 11, wherein the the fluorine-based surfactant is contained in an amount of 0.1 to 5.0 wt % with respect to the total weight of the UV-curable in composition. ### Claim 13 (depends on 2) The UV-curable ink composition of claim 2, wherein the photosensitizer is contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the photopolymerization initiator. ### Claim 14 (depends on 2) The UV-curable ink composition of claim 2, wherein the adhesion promoter is an epoxy silane-based compound. ### Claim 15 (depends on 2) The UV-curable ink composition of claim 2, wherein the adhesion promoter is contained in an amount of 0.1 to 15 wt % with respect to the total weight of the UV-curable ink composition. ### Claim 16 (depends on 1) The UV-curable ink composition of claim 1, wherein a dose for curing the UV-curable ink composition is 1 to 10,000 mJ/cm2. ### Claim 17 (depends on 1) The UV-curable ink composition of claim 1, wherein the UV-curable ink composition has a viscosity of 1 cP to 50 cP at 25° C. ### Claim 18 (depends on 17) The UV-curable ink composition of claim 17, wherein the UV-curable ink composition has a viscosity of 3 cP to 45 cP at 25° C. ### Claim 19 (depends on 1) The UV-curable ink composition of claim 1, wherein the taper angle is 0° to 10°. ### Claim 20 (depends on 1) The UV-curable ink composition of claim 1, wherein the UV-curable ink composition is for forming a bezel pattern. ### Claim 21 (depends on 1) A method for producing a bezel pattern for a display substrate, comprising: a) forming a bezel pattern on a substrate by using the UV-curable ink composition of claim 1; and b) curing the bezel pattern. ### Claim 22 (depends on 21) The method of claim 21, further comprising cleaning and drying the substrate prior to a) the forming of the bezel pattern. ### Claim 23 (depends on 22) The method of claim 22, wherein the cleaning and drying of the substrate is carried out by one or more treatments selected from the group consisting of a wet surface treatment, a UV ozone treatment, and a normal pressure plasma treatment. ### Claim 24 (depends on 21) The method of claim 21, wherein the method of forming the bezel pattern on the substrate in Step a) is a method selected from an inkjet printing, a gravure coating, and a reverse offset coating. ### Claim 25 (depends on 21) The method of claim 21, wherein Step a) is carried out at a process temperature of 10° C. to 100° C. ### Claim 26 (depends on 25) The method of claim 25, wherein Step a) is carried out at a process temperature of 20° C. to 70° C. ### Claim 27 (depends on 21) The method of claim 21, wherein the bezel pattern has a thickness of 0.1 μm to 20 μm. ### Claim 28 (depends on 27) The method of claim 27, wherein the bezel pattern has a thickness of 0.5 μm to 5 μm. ### Claim 29 (depends on 21) The method of claim 21, wherein the bezel pattern has a taper angle of 0° to 30°. ### Claim 30 (depends on 29) The method of claim 29, wherein the bezel pattern has a taper angle of 0° to 10°. ### Claim 31 (depends on 21) The method of claim 21, wherein the bezel pattern has an OD value of 0.05 to 2.5 per a film thickness of 1.0 μm. ### Claim 32 (depends on 1) A bezel pattern for a display substrate, which is formed on a substrate by curing the UV-curable ink composition of claim 1. ### Claim 33 (depends on 32) The bezel pattern of claim 32, wherein the bezel pattern has a thickness of 0.1 μm to 20 μm. ### Claim 34 (depends on 33) The bezel pattern of claim 33, wherein the bezel pattern has a thickness of 0.5 μm to 5 μm. ### Claim 35 (depends on 32) The bezel pattern of claim 32, wherein the bezel pattern has a taper angle of 0° to 30°. ### Claim 36 (depends on 35) The bezel pattern of claim 35, wherein the bezel pattern has a taper angle of 0° to 10°. ### Claim 37 (depends on 32) The bezel pattern of claim 32, wherein the bezel pattern has an OD value of 0.05 to 2.5 per a film thickness of 1.0 μm.