Fluorescent screen
AssigneePioneer Electronic Corporation
InventorsSatoru Tanaka, Yasushi Murata
Life of this patent
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Abstract
A fluorescent screen comprises a plate woven or knitted from one or more threads each including an organic fluorescent substance. Since the luminescent light is scattered by the threads constructing the plate, the light emitted from the screen is increased to a level higher than that of the conventional fluorescent screen to enhance brightness thereof.
Claims20
A fluorescent screen specially adapted for use in an image display device of rear-projection or front-projection type and having a plurality of picture elements which emit light when stimulated by a scanning beam of stimulating light impinging onto the fluorescent screen in the form of a spot, comprising a fabric plate woven or knitted from one or more threads, each of said threads including an organic fluorescent substance, said fabric plate comprising a plurality of picture elements wherein at least three intersected portions of said threads exist within each picture element.
A method for manufacturing a fluorescent screen specially adapted for use in an image display device of a rear-projection or front-projection type and having a plurality of picture elements which emit light when stimulated by a scanning beam of stimulating light impinging onto the fluorescent screen in the form of a spot, comprising the steps of:
- preparing spun yarns comprising a plurality of fibers,
- preparing a solution including a solvent and a mixture which comprises an organic fluorescent substance and a binder,
- immersing said spun yarns into said solution,
- drying said spun yarns to remove said solvent therefrom so that said organic fluorescent substance is dispersed within the fibers of said spun yarns, and
- weaving or knitting one or more of said spun yarns into a plate of fabric comprising a plurality of picture elements, wherein at least three intersected portions of said spun yarns exist within each picture element.
A method for manufacturing a fluorescent screen specially adapted for use in an image display device of a rear-projection or front-projection type and having a plurality of picture elements which emit light when stimulated by a scanning beam of stimulating light impinging onto the fluorescent screen in the form of a spot, comprising the steps of:
- preparing a fluid of material for a synthetic resin including an organic fluorescent substance,
- preparing spun yarns through extrusion from said fluid, and
- weaving or knitting one or more of said spun yarns into a plate of fabric comprising a plurality of picture elements, wherein at least three intersected portions of said spun yarns exist within each picture element.
Dependencies are inferred from the claim text.