Patent ID: 6946160

Claim:
A method of forming a fluorescent screen where a color filter film and a fluorescent film are deposited on a surface of a light transmissive substrate, said method comprising: coating a pigment dispersion liquid on the surface of the light transmissive substrate to form a coated film, an average particle diameter of the pigment in said pigment dispersion liquid being confined to 0.2 μm or less; and forming a color filter film by drying the coated film; wherein drying of the coated film is performed under conditions that a temperature of corner portions of said light transmissive substrate is controlled to 36 °C. to 50° C., a difference in temperature between a temperature of a central region and the temperature of the corner portions of said light transmissive substrate is confined to within 7° C., and a film thickness of said color filter film is controlled to 0.3 μm or more.