Synthesis and characterization of novel blue azo-dye derivatives containing acrylate group for dye-based color filters

Even though dyes have a fine resolution and good chromaticities, they are not widely used as coloring materials for color filters (CFs) due to their low thermal stability and chemical resistance. A series of azo-dye derivatives, which consist of two cross-linkable acrylate or methacrylate groups to improve thermal and chemical properties, have been synthesized and used to fabricate color filters. The spectral properties and chemical/thermal stabilities of the fabricated CFs were investigated by comparing dye-based CFs, without a complicated dispersion process, but with pigment-based CFs using dispersed pigment. Also, more properties including the development test and surface morphologies lithographic properties were studied. The synthesized azo dyes were characterized by elemental analysis, UV-visible spectra, IR, mass, and H-1-NMR spectra.