UV Curable Back Light Ink and Prepartion Thereof

摘要

PURPOSE: Provided is an ink for a UV curing type backlight of an LCD, which can prevent the change in quality compared to an ink for a thermosetting backlight and can improve the drying speed of the ink and the brightness of the backlight. CONSTITUTION: The ink for the UV curing type backlight is produced by a process comprising the steps of: mixing tetramethoxy silane and 0.1-1.0% HCl water solution in the weight ratio of 2:1-3:1; adding 20-50wt% of an acryloxy-functional silane to the mixture to obtain a colloidal silica solution of which the surface is treated by the acryloxy-functional silane, wherein the acryloxy-functional silane is at least one selected from the group consisting of acryloxypropyl trimethoxy silane, acryloxypropyl triethoxy silane, methacryloxypropyl methyl diethoxy silane, and etc.; adding 20-50wt% of hexanediol diacrylate to the silica solution; eliminating an alcohol solution and moisture; adding 5-15wt% of epoxy acrylate, 1-5wt% of isobutylbenzene ether, and 5-12wt% of a filler containing SiO2, TiO2, and BaSO4 having an average particle size of less than 10 micrometer.