| 摘要 |
A light source apparatus that includes a light emitting diode and a fluorescent material film. The fluorescent material film converts ultraviolet or blue light emitted from the light emitting diode into white light. The film is formed by coating, on at least one side of a glass substrate, a liquid mixture of fluorescent material, an organic binder, and a solvent, followed by drying and firing, and another thin film is further formed by coating, on the fluorescent material film, a coating material that contains a metallic alkoxide and/or metallic alkoxide oligomer, followed by drying and firing.
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