Ink Composition for Optoelectronic Device

Abstract

The present invention relates to an ink composition for printing capable of inking materials for an optoelectronic device and directly applying the inked materials to a patterning process. More particularly, the present invention relates to a printing ink composition for manufacturing an optoelectronic device capable of direct patterning by adjusting the physical property of a core material so as to be suitable for a printing method in the manufacturing of optoelectronic devices, for example, an organic electroluminescent device or an organic thin film transistor.

1 . A printing ink composition for fabricating optoelectronic device, directly applicable to a patterning process by forming materials for optoelectronic device into ink, the printing ink composition comprising a compound selected from compounds represented by Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3, and a mixture thereof in an amount of 0.01-90 wt % based on the total weight of the composition: 
       
         
           
           
               
               
           
         
         wherein 
         R 1  through R 6  is independently selected from hydrogen, hydroxy, C 1 -C 30  alkoxy, C 1 -C 30  alkyl, C 3 -C 30  cycloalkyl, C 6 -C 20  aryl, (C 6 -C 20 )ar(C 1 -C 30 )alkyl, functional group-substituted C 1 -C 30  alkyl, functional group-substituted C 6 -C 20  aryl, heterocyclic compound, polymeric compound and a derivative thereof, wherein when R 1  through R 6  represents alkyl or aralkyl non-substituted or substituted with a functional group, carbon chain may include a heteroatom selected from N, S and O, and R 1  and R 2 , or R 4  and R 5  may be independently linked to each other via alkylene with or without a heteroatom to form a ring. 
       
     
     
         2 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , wherein each of R 1  through R 6  is independently selected from hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, amyl, hexyl, ethylhexyl, heptyl, octyl, isooctyl, nonyl, decyl, dodecyl, hexadecyl, octadecyl, docodecyl, cyclopropyl, cyclopentyl, cyclohexyl, allyl, hydroxy, methoxy, methoxyethyl, methoxypropyl, cyanoethyl, ethoxy, butoxy, hexyloxy, methoxyethoxyethyl, methoxyethoxyethoxyethyl, hexametyleneimine, morpholine, piperidine, piperazine, ethylenediamine, propylenediamine, hexamethylenediamine, triethylenediamine, pyrrole, imidazole, pyridine, carboxymethyl, trimethoxysilylpropyl, triethoxysilylpropyl, phenyl, methoxyphenyl, cyanophenyl, phenoxy, tolyl, benzyl, polyallylamine, polyethyleneamine and derivatives thereof. 
     
     
         3 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , wherein the ammonium carbamate compound represented by Chemical Formula 1 is selected from the group consisting of ammonium carbamate, ethylammonium ethylcarbamate, isopropylammonium isopropylcarbamate, n-butylammonium n-butylcarbamate, isobutylammonium isobutylcarbamate, t-butylammonium t-butylcarbamate, 2-ethylhexylammonium 2-ethylhexylcarbamate, octadecylammonium octadecylcarbamate, 2-methoxyethylammonium 2-methoxyethylcarbamate, 2-cyanoethylammonium 2-cyanoethylcarbamate, dibutylammonium dibutylcarbamate, dioctadecylammonium dioctadecylcarbamate, methyldecylammonium methyldecylcarbamate, hexamethyleneimineammonium hexamethyleneiminecarbamate, morpholinium morpholinecarbamate, pyridinium ethylhexylcarbamate, triethylenediaminium isopropylbicarbamate, benzylammonium benzylcarbamate, triethoxysilylpropylammonium triethoxysilylpropylcarbamate and derivatives thereof, or a mixture thereof; the ammonium carbonate compound represented by Chemical Formula 2 is selected from the group consisting of ammonium carbonate, ethylammonium ethylcarbonate, isopropylammonium isopropylcarbonate, n-butylammonium n-butylcarbonate, isobutylammonium isobutylcarbonate, t-butylammonium t-butylcarbonate, 2-ethylhexylammonium 2-ethylhexylcarbonate, 2-methoxyethylammonium 2-methoxyethylcarbonate, 2-cyanoethylammonium 2-cyanoethylcarbonate, octadecylammonium octadecylcarbonate, dibutylammonium dibutylcarbonate, dioctadecylammonium dioctadecylcarbonate, methyldecylammonium methyldecylcarbonate, hexamethyleneimineammonium hexamethyleneiminecarbonate, morpholineammonium morpholinecarbonate, benzylammonium benzylcarbonate, triethoxysilylpropylammonium triethoxysilylpropylcarbonate, triethylenediaminium isopropylcarbonate and derivatives thereof, or a mixture thereof; and the ammonium bicarbonate compound represented by Chemical Formula 3 is selected from the group consisting of ammonium bicarbonate, isopropylammonium bicarbonate, t-butylammonium bicarbonate, 2-ethylhexylammonium bicarbonate, 2-methoxyethylammonium bicarbonate, 2-cyanoethylammonium bicarbonate, dioctadecylammonium bicarbonate, pyridinium bicarbonate, triethylenediaminium bicarbonate and derivatives thereof, or a mixture thereof. 
     
     
         4 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , wherein the optoelectronic device is organic light emitting device (OLED) or organic thin film transistor (OTFT). 
     
     
         5 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , wherein the material for optoelectronic device is selected from fluorescence polymer, phosphorescence polymer, host material, dopant material, hole transfer material, electron transfer material, organic semiconductor material, photodisk material, phtochromic material, photochemical hole burning (PHB) material, liquid crystal material, laser pigment material, optical material, resist material, photosensitive material, photographic material, photoconductive material, charge transfer complexe, ion conductive material, superconductive material, sensor material, electrochromic material, piezoelectric material, magnetic material, photoelectronic functional biomaterial, organic photovoltaic material, and combination thereof. 
     
     
         6 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , which are applied to a printing process selected from inkjet printing, offset printing, screen printing, pad printing, gravure printing, flexographic printing, stencil printing and imprinting, 
     
     
         7 . The printing ink composition for fabricating optoelectronic device according to  claim 1 , which further comprises at least one component selected from a solvent, stabilizer, dispersant, binder resin, reducing agent, surfactant, wetting agent, thixotropic agent and levelling agent.