In the development of display devices, a color filter is still considered an indispensable component. For a thinner display panel, the thickness of the color filter also needs to be decreased. However, if the thickness of the color filter is reduced, the color properties, including the color purity and color gamut are simultaneously diminished. Therefore, introduction of new colorants is needed to lower the thickness without diminishing the color performance. In this study, four phthalocyanine green dyes were synthesized for use in color filters. The molecular geometry and absorption properties were predicted by density functional theory (DFT) and time-dependent DFT, and UV-Vis spectroscopy was employed to measure the optical properties. The thermal stabilities of the dyes were examined by thermogravimetric analysis. A dye with suitable solubility and color properties was adopted in the color filter, and the optical properties and thickness of the dye-based color filter were compared to those of the pigment-based color filter. The chromatic performance and thickness of the color filter were determined by color spectrometry and Alpha step, respectively. Finally, we confirmed that the dye could enable the decrease in the thickness of the filter and provide a superior color property.

在显示设备的发展中，滤色器仍然被认为是必不可少的组件。对于更薄的显示面板，还需要减小彩色滤光片的厚度。但是，如果减小滤色器的厚度，则包括色纯度和色域在内的颜色特性会同时降低。因此，需要引入新的着色剂以降低厚度而不降低色彩性能。在这项研究中，合成了四种酞菁绿染料用于彩色滤光片。通过密度泛函理论（DFT）和时间依赖的DFT预测了分子的几何形状和吸收特性，并使用UV-Vis光谱法测量了光学特性。通过热重分析检查了染料的热稳定性。在滤色器中采用具有合适的溶解度和颜色特性的染料，并且将基于染料的滤色器的光学特性和厚度与基于颜料的滤色器的光学特性和厚度进行比较。彩色滤光片的彩色性能和厚度分别通过色谱法和Alpha步骤确定。最后，我们证实了该染料可以减少滤镜的厚度并提供出色的色彩性能。