| abstract |
(57) [Problem] To provide a color image display device capable of displaying a vivid color image with high saturation. SOLUTION: In a color image display device using a three primary color display system of red light, green light and blue light, light of a specific wavelength range at a boundary between red light and green light and / or at a boundary between green light and blue light. A color purity correction filter that corrects color purity by selectively absorbing is provided in the optical system. The color purity correction filter is preferably one in which a polymer contains a metal ion consisting of a phosphate group and a trivalent neodymium ion. Further, the trivalent erbium ion, the trivalent praseodymium ion and the trivalent praseodymium ion are preferably contained in the polymer. It is preferable that at least one kind of metal ion selected from valent holmium ions is contained. |