| 초록 |
The colour filter is one of the most important parts to show images and it determines colour properties of LCD. The colour properties of colour filter depend on pigment properties. The contrast ratio also depends on light scattering of pigment particles and large particle size of pigment increase light scattering. The synergist interacts with dispersants and pigments, it thus supresses aggregation and improves dispersion of the pigment particles. Here, phthalocyanine dyes have amine, ester, and carboxyl group as green synergists were synthesized. Their thermal, spectral properties and particle size were examined by TGA, UV-Vis spectroscopy, particle size distribution analyser, and scanning electron microscopy respectively. Consequently, the contrast ratio increased by adding the synthesized synergists and the phthalocyanine derivatives as synergists could effectively improve the performance of liquid crystal display. |
