Method of forming fluorescent screen
AssigneeKabushiki Kaisha Toshiba
InventorNorihisa Nakao
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Abstract
A method of forming a fluorescent screen where a pigment film and a fluorescent film are deposited on a surface of a light transmissive substrate, is presented. The method includes coating a pigment dispersion liquid on the surface of the light transmissive substrate to form a coated film and forming the pigment film by drying the coated film. The drying of the coated film is performed under conditions that a temperature of the corner portions of the light transmissive substrate is controlled to 36° C. to 50° C.
Claims13
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.
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 a 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 such that corner portions of the coated film are allowed to dry by a drying means which is exclusively assigned to dry the corner portions of the coated film in addition to separate drying means which is assigned to dry the entire surface of the coated film, the temperature of corner portions of said light transmissive substrate is controlled to the range of 36 °C. to 50 °C., and a film thickness of said color filter film is controlled to 0.3 μm or more.
Dependencies are inferred from the claim text.