Optical Properties of Colorants-Containing Polymethyl Methacrylate for the Front Filter of Plasma Display Panel

Abstract

We have prepared colorants-containing polymethyl methacrylate (PMMA) films for the front filter of plasma display panel (PDP) by solvent casting method and investigated their optical properties. In this study, a cyanine dye and a Cu-hydrate pigment have been used as the colorants for neon-cutting and color control, respectively. The experimental results have revealed that PMMA films act as a band rejection-type color filter indicating characteristics of sharp absorptions in specific regions. In the PDP devices with our band rejection color filters, the luminance from unnecessary emissive light is sufficiently reduced, resulting in wider color gamut and higher color purity.

Keywords:

• color adjusting film
• colorants-containing PMMA
• front filter
• plasma display panel

Acknowledgments

This work was supported by the Industrial Technology Infrastructure Promotion Program of the Ministry of Commerce, Industry and Energy of Korea.